1 /* GTK - The GIMP Toolkit
2 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Lesser General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Lesser General Public License for more details.
14 * You should have received a copy of the GNU Lesser General Public
15 * License along with this library; if not, write to the Free
16 * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
20 * Modified by the GTK+ Team and others 1997-2000. See the AUTHORS
21 * file for a list of people on the GTK+ Team. See the ChangeLog
22 * files for a list of changes. These files are distributed with
23 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
32 #include "gtkaccellabel.h"
34 #include "gtkmainprivate.h"
35 #include "gtkmarshalers.h"
37 #include "gtkwindow.h"
38 #include "gtkclipboard.h"
39 #include "gtkimagemenuitem.h"
41 #include "gtkseparatormenuitem.h"
42 #include "gtktextutil.h"
43 #include "gtkmenuitem.h"
44 #include "gtkmenushellprivate.h"
45 #include "gtknotebook.h"
47 #include "gtkbindings.h"
48 #include "gtkbuildable.h"
51 #include "gtktooltip.h"
52 #include "gtkprivate.h"
53 #include "gtktypebuiltins.h"
58 * @Short_description: A widget that displays a small to medium amount of text
61 * The #GtkLabel widget displays a small amount of text. As the name
62 * implies, most labels are used to label another widget such as a
63 * #GtkButton, a #GtkMenuItem, or a #GtkOptionMenu.
65 * <refsect2 id="GtkLabel-BUILDER-UI">
66 * <title>GtkLabel as GtkBuildable</title>
68 * The GtkLabel implementation of the GtkBuildable interface supports a
69 * custom <attributes> element, which supports any number of <attribute>
70 * elements. the <attribute> element has attributes named name, value,
71 * start and end and allows you to specify #PangoAttribute values for this label.
74 * <title>A UI definition fragment specifying Pango attributes</title>
75 * <programlisting><![CDATA[
76 * <object class="GtkLabel">
78 * <attribute name="weight" value="PANGO_WEIGHT_BOLD"/>
79 * <attribute name="background" value="red" start="5" end="10"/>"
82 * ]]></programlisting>
84 * The start and end attributes specify the range of characters to which the
85 * Pango attribute applies. If start and end are not specified, the attribute is
86 * applied to the whole text. Note that specifying ranges does not make much
87 * sense with translatable attributes. Use markup embedded in the translatable
92 * <title>Mnemonics</title>
94 * Labels may contain <firstterm>mnemonics</firstterm>. Mnemonics are
95 * underlined characters in the label, used for keyboard navigation.
96 * Mnemonics are created by providing a string with an underscore before
97 * the mnemonic character, such as <literal>"_File"</literal>, to the
98 * functions gtk_label_new_with_mnemonic() or
99 * gtk_label_set_text_with_mnemonic().
101 * Mnemonics automatically activate any activatable widget the label is
102 * inside, such as a #GtkButton; if the label is not inside the
103 * mnemonic's target widget, you have to tell the label about the target
104 * using gtk_label_set_mnemonic_widget(). Here's a simple example where
105 * the label is inside a button:
109 * // Pressing Alt+H will activate this button
110 * button = gtk_button_new (<!-- -->);
111 * label = gtk_label_new_with_mnemonic ("_Hello");
112 * gtk_container_add (GTK_CONTAINER (button), label);
116 * There's a convenience function to create buttons with a mnemonic label
121 * // Pressing Alt+H will activate this button
122 * button = gtk_button_new_with_mnemonic ("_Hello");
126 * To create a mnemonic for a widget alongside the label, such as a
127 * #GtkEntry, you have to point the label at the entry with
128 * gtk_label_set_mnemonic_widget():
132 * // Pressing Alt+H will focus the entry
133 * entry = gtk_entry_new (<!-- -->);
134 * label = gtk_label_new_with_mnemonic ("_Hello");
135 * gtk_label_set_mnemonic_widget (GTK_LABEL (label), entry);
141 * <title>Markup (styled text)</title>
143 * To make it easy to format text in a label (changing colors, fonts,
144 * etc.), label text can be provided in a simple <link
145 * linkend="PangoMarkupFormat">markup format</link>.
146 * Here's how to create a label with a small font:
150 * label = gtk_label_new (NULL);
151 * gtk_label_set_markup (GTK_LABEL (label), "<small>Small text</small>");
156 * linkend="PangoMarkupFormat">complete documentation</link> of available
157 * tags in the Pango manual.)
159 * The markup passed to gtk_label_set_markup() must be valid; for example,
160 * literal <, > and & characters must be escaped as \<,
161 * \gt;, and \&. If you pass text obtained from the user, file,
162 * or a network to gtk_label_set_markup(), you'll want to escape it with
163 * g_markup_escape_text() or g_markup_printf_escaped().
165 * Markup strings are just a convenient way to set the #PangoAttrList on
166 * a label; gtk_label_set_attributes() may be a simpler way to set
167 * attributes in some cases. Be careful though; #PangoAttrList tends to
168 * cause internationalization problems, unless you're applying attributes
169 * to the entire string (i.e. unless you set the range of each attribute
170 * to [0, %G_MAXINT)). The reason is that specifying the start_index and
171 * end_index for a #PangoAttribute requires knowledge of the exact string
172 * being displayed, so translations will cause problems.
176 * <title>Selectable labels</title>
177 * Labels can be made selectable with gtk_label_set_selectable().
178 * Selectable labels allow the user to copy the label contents to
179 * the clipboard. Only labels that contain useful-to-copy information
180 * — such as error messages — should be made selectable.
182 * <refsect2 id="label-text-layout">
183 * <title>Text layout</title>
185 * A label can contain any number of paragraphs, but will have
186 * performance problems if it contains more than a small number.
187 * Paragraphs are separated by newlines or other paragraph separators
188 * understood by Pango.
190 * Labels can automatically wrap text if you call
191 * gtk_label_set_line_wrap().
193 * gtk_label_set_justify() sets how the lines in a label align
194 * with one another. If you want to set how the label as a whole
195 * aligns in its available space, see gtk_misc_set_alignment().
197 * The #GtkLabel:width-chars and #GtkLabel:max-width-chars properties
198 * can be used to control the size allocation of ellipsized or wrapped
199 * labels. For ellipsizing labels, if either is specified (and less
200 * than the actual text size), it is used as the minimum width, and the actual
201 * text size is used as the natural width of the label. For wrapping labels,
202 * width-chars is used as the minimum width, if specified, and max-width-chars
203 * is used as the natural width. Even if max-width-chars specified, wrapping
204 * labels will be rewrapped to use all of the available width.
207 * Note that the interpretation of #GtkLabel:width-chars and
208 * #GtkLabel:max-width-chars has changed a bit with the introduction of
209 * <link linkend="geometry-management">width-for-height geometry management.</link>
214 * <title>Links</title>
216 * Since 2.18, GTK+ supports markup for clickable hyperlinks in addition
217 * to regular Pango markup. The markup for links is borrowed from HTML, using the
218 * <tag>a</tag> with href and title attributes. GTK+ renders links similar to the
219 * way they appear in web browsers, with colored, underlined text. The title
220 * attribute is displayed as a tooltip on the link. An example looks like this:
222 * <informalexample><programlisting>
223 * gtk_label_set_markup (label, "Go to the <a href="http://www.gtk.org" title="<i>Our</i> website">GTK+ website</a> for more...");
224 * </programlisting></informalexample>
226 * It is possible to implement custom handling for links and their tooltips with
227 * the #GtkLabel::activate-link signal and the gtk_label_get_current_uri() function.
233 /*rint() is only available in GCC and/or C99*/
234 #if (__STDC_VERSION__ < 199901L && !defined __GNUC__)
235 double rint(double x)
237 if (ceil(x+0.5) == floor(x+0.5))
239 int a = (int)ceil(x);
252 struct _GtkLabelPrivate
254 GtkLabelSelectionInfo *select_info;
255 GtkWidget *mnemonic_widget;
256 GtkWindow *mnemonic_window;
258 PangoAttrList *attrs;
259 PangoAttrList *effective_attrs;
267 guint mnemonics_visible : 1;
270 guint use_underline : 1;
271 guint use_markup : 1;
273 guint single_line_mode : 1;
274 guint have_transform : 1;
277 guint pattern_set : 1;
278 guint track_links : 1;
280 guint mnemonic_keyval;
283 gint max_width_chars;
286 /* Notes about the handling of links:
288 * Links share the GtkLabelSelectionInfo struct with selectable labels.
289 * There are some new fields for links. The links field contains the list
290 * of GtkLabelLink structs that describe the links which are embedded in
291 * the label. The active_link field points to the link under the mouse
292 * pointer. For keyboard navigation, the 'focus' link is determined by
293 * finding the link which contains the selection_anchor position.
294 * The link_clicked field is used with button press and release events
295 * to ensure that pressing inside a link and releasing outside of it
296 * does not activate the link.
298 * Links are rendered with the link-color/visited-link-color colors
299 * that are determined by the style and with an underline. When the mouse
300 * pointer is over a link, the pointer is changed to indicate the link,
301 * and the background behind the link is rendered with the base[PRELIGHT]
302 * color. While a button is pressed over a link, the background is rendered
303 * with the base[ACTIVE] color.
305 * Labels with links accept keyboard focus, and it is possible to move
306 * the focus between the embedded links using Tab/Shift-Tab. The focus
307 * is indicated by a focus rectangle that is drawn around the link text.
308 * Pressing Enter activates the focussed link, and there is a suitable
309 * context menu for links that can be opened with the Menu key. Pressing
310 * Control-C copies the link URI to the clipboard.
312 * In selectable labels with links, link functionality is only available
313 * when the selection is empty.
318 gchar *title; /* the title attribute, used as tooltip */
319 gboolean visited; /* get set when the link is activated; this flag
320 * gets preserved over later set_markup() calls
322 gint start; /* position of the link in the PangoLayout */
326 struct _GtkLabelSelectionInfo
329 gint selection_anchor;
331 GtkWidget *popup_menu;
334 GtkLabelLink *active_link;
340 guint select_words : 1;
341 guint selectable : 1;
342 guint link_clicked : 1;
350 ACTIVATE_CURRENT_LINK,
365 PROP_MNEMONIC_KEYVAL,
366 PROP_MNEMONIC_WIDGET,
367 PROP_CURSOR_POSITION,
368 PROP_SELECTION_BOUND,
371 PROP_SINGLE_LINE_MODE,
373 PROP_MAX_WIDTH_CHARS,
374 PROP_TRACK_VISITED_LINKS
377 /* When rotating ellipsizable text we want the natural size to request
378 * more to ensure the label wont ever ellipsize in an allocation of full natural size.
380 #define ROTATION_ELLIPSIZE_PADDING 2
382 static guint signals[LAST_SIGNAL] = { 0 };
384 static const GdkColor default_link_color = { 0, 0, 0, 0xeeee };
385 static const GdkColor default_visited_link_color = { 0, 0x5555, 0x1a1a, 0x8b8b };
387 static void gtk_label_set_property (GObject *object,
391 static void gtk_label_get_property (GObject *object,
395 static void gtk_label_finalize (GObject *object);
396 static void gtk_label_destroy (GtkWidget *widget);
397 static void gtk_label_size_allocate (GtkWidget *widget,
398 GtkAllocation *allocation);
399 static void gtk_label_state_changed (GtkWidget *widget,
401 static void gtk_label_style_updated (GtkWidget *widget);
402 static void gtk_label_direction_changed (GtkWidget *widget,
403 GtkTextDirection previous_dir);
404 static gint gtk_label_draw (GtkWidget *widget,
406 static gboolean gtk_label_focus (GtkWidget *widget,
407 GtkDirectionType direction);
409 static void gtk_label_realize (GtkWidget *widget);
410 static void gtk_label_unrealize (GtkWidget *widget);
411 static void gtk_label_map (GtkWidget *widget);
412 static void gtk_label_unmap (GtkWidget *widget);
414 static gboolean gtk_label_button_press (GtkWidget *widget,
415 GdkEventButton *event);
416 static gboolean gtk_label_button_release (GtkWidget *widget,
417 GdkEventButton *event);
418 static gboolean gtk_label_motion (GtkWidget *widget,
419 GdkEventMotion *event);
420 static gboolean gtk_label_leave_notify (GtkWidget *widget,
421 GdkEventCrossing *event);
423 static void gtk_label_grab_focus (GtkWidget *widget);
425 static gboolean gtk_label_query_tooltip (GtkWidget *widget,
428 gboolean keyboard_tip,
429 GtkTooltip *tooltip);
431 static void gtk_label_set_text_internal (GtkLabel *label,
433 static void gtk_label_set_label_internal (GtkLabel *label,
435 static void gtk_label_set_use_markup_internal (GtkLabel *label,
437 static void gtk_label_set_use_underline_internal (GtkLabel *label,
439 static void gtk_label_set_attributes_internal (GtkLabel *label,
440 PangoAttrList *attrs);
441 static void gtk_label_set_uline_text_internal (GtkLabel *label,
443 static void gtk_label_set_pattern_internal (GtkLabel *label,
444 const gchar *pattern,
445 gboolean is_mnemonic);
446 static void gtk_label_set_markup_internal (GtkLabel *label,
448 gboolean with_uline);
449 static void gtk_label_recalculate (GtkLabel *label);
450 static void gtk_label_hierarchy_changed (GtkWidget *widget,
451 GtkWidget *old_toplevel);
452 static void gtk_label_screen_changed (GtkWidget *widget,
453 GdkScreen *old_screen);
454 static gboolean gtk_label_popup_menu (GtkWidget *widget);
456 static void gtk_label_create_window (GtkLabel *label);
457 static void gtk_label_destroy_window (GtkLabel *label);
458 static void gtk_label_ensure_select_info (GtkLabel *label);
459 static void gtk_label_clear_select_info (GtkLabel *label);
460 static void gtk_label_update_cursor (GtkLabel *label);
461 static void gtk_label_clear_layout (GtkLabel *label);
462 static void gtk_label_ensure_layout (GtkLabel *label);
463 static void gtk_label_select_region_index (GtkLabel *label,
467 static gboolean gtk_label_mnemonic_activate (GtkWidget *widget,
468 gboolean group_cycling);
469 static void gtk_label_setup_mnemonic (GtkLabel *label,
471 static void gtk_label_drag_data_get (GtkWidget *widget,
472 GdkDragContext *context,
473 GtkSelectionData *selection_data,
477 static void gtk_label_buildable_interface_init (GtkBuildableIface *iface);
478 static gboolean gtk_label_buildable_custom_tag_start (GtkBuildable *buildable,
481 const gchar *tagname,
482 GMarkupParser *parser,
485 static void gtk_label_buildable_custom_finished (GtkBuildable *buildable,
488 const gchar *tagname,
492 static void connect_mnemonics_visible_notify (GtkLabel *label);
493 static gboolean separate_uline_pattern (const gchar *str,
499 /* For selectable labels: */
500 static void gtk_label_move_cursor (GtkLabel *label,
501 GtkMovementStep step,
503 gboolean extend_selection);
504 static void gtk_label_copy_clipboard (GtkLabel *label);
505 static void gtk_label_select_all (GtkLabel *label);
506 static void gtk_label_do_popup (GtkLabel *label,
507 GdkEventButton *event);
508 static gint gtk_label_move_forward_word (GtkLabel *label,
510 static gint gtk_label_move_backward_word (GtkLabel *label,
514 static void gtk_label_rescan_links (GtkLabel *label);
515 static void gtk_label_clear_links (GtkLabel *label);
516 static gboolean gtk_label_activate_link (GtkLabel *label,
518 static void gtk_label_activate_current_link (GtkLabel *label);
519 static GtkLabelLink *gtk_label_get_current_link (GtkLabel *label);
520 static void gtk_label_get_link_colors (GtkWidget *widget,
521 GdkColor **link_color,
522 GdkColor **visited_link_color);
523 static void emit_activate_link (GtkLabel *label,
526 static GtkSizeRequestMode gtk_label_get_request_mode (GtkWidget *widget);
527 static void gtk_label_get_preferred_width (GtkWidget *widget,
530 static void gtk_label_get_preferred_height (GtkWidget *widget,
533 static void gtk_label_get_preferred_width_for_height (GtkWidget *widget,
536 gint *natural_width);
537 static void gtk_label_get_preferred_height_for_width (GtkWidget *widget,
539 gint *minimum_height,
540 gint *natural_height);
542 static GtkBuildableIface *buildable_parent_iface = NULL;
544 G_DEFINE_TYPE_WITH_CODE (GtkLabel, gtk_label, GTK_TYPE_MISC,
545 G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
546 gtk_label_buildable_interface_init))
549 add_move_binding (GtkBindingSet *binding_set,
552 GtkMovementStep step,
555 g_return_if_fail ((modmask & GDK_SHIFT_MASK) == 0);
557 gtk_binding_entry_add_signal (binding_set, keyval, modmask,
561 G_TYPE_BOOLEAN, FALSE);
563 /* Selection-extending version */
564 gtk_binding_entry_add_signal (binding_set, keyval, modmask | GDK_SHIFT_MASK,
568 G_TYPE_BOOLEAN, TRUE);
572 gtk_label_class_init (GtkLabelClass *class)
574 GObjectClass *gobject_class = G_OBJECT_CLASS (class);
575 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
576 GtkBindingSet *binding_set;
578 gobject_class->set_property = gtk_label_set_property;
579 gobject_class->get_property = gtk_label_get_property;
580 gobject_class->finalize = gtk_label_finalize;
582 widget_class->destroy = gtk_label_destroy;
583 widget_class->size_allocate = gtk_label_size_allocate;
584 widget_class->state_changed = gtk_label_state_changed;
585 widget_class->style_updated = gtk_label_style_updated;
586 widget_class->query_tooltip = gtk_label_query_tooltip;
587 widget_class->direction_changed = gtk_label_direction_changed;
588 widget_class->draw = gtk_label_draw;
589 widget_class->realize = gtk_label_realize;
590 widget_class->unrealize = gtk_label_unrealize;
591 widget_class->map = gtk_label_map;
592 widget_class->unmap = gtk_label_unmap;
593 widget_class->button_press_event = gtk_label_button_press;
594 widget_class->button_release_event = gtk_label_button_release;
595 widget_class->motion_notify_event = gtk_label_motion;
596 widget_class->leave_notify_event = gtk_label_leave_notify;
597 widget_class->hierarchy_changed = gtk_label_hierarchy_changed;
598 widget_class->screen_changed = gtk_label_screen_changed;
599 widget_class->mnemonic_activate = gtk_label_mnemonic_activate;
600 widget_class->drag_data_get = gtk_label_drag_data_get;
601 widget_class->grab_focus = gtk_label_grab_focus;
602 widget_class->popup_menu = gtk_label_popup_menu;
603 widget_class->focus = gtk_label_focus;
604 widget_class->get_request_mode = gtk_label_get_request_mode;
605 widget_class->get_preferred_width = gtk_label_get_preferred_width;
606 widget_class->get_preferred_height = gtk_label_get_preferred_height;
607 widget_class->get_preferred_width_for_height = gtk_label_get_preferred_width_for_height;
608 widget_class->get_preferred_height_for_width = gtk_label_get_preferred_height_for_width;
610 class->move_cursor = gtk_label_move_cursor;
611 class->copy_clipboard = gtk_label_copy_clipboard;
612 class->activate_link = gtk_label_activate_link;
615 * GtkLabel::move-cursor:
616 * @entry: the object which received the signal
617 * @step: the granularity of the move, as a #GtkMovementStep
618 * @count: the number of @step units to move
619 * @extend_selection: %TRUE if the move should extend the selection
621 * The ::move-cursor signal is a
622 * <link linkend="keybinding-signals">keybinding signal</link>
623 * which gets emitted when the user initiates a cursor movement.
624 * If the cursor is not visible in @entry, this signal causes
625 * the viewport to be moved instead.
627 * Applications should not connect to it, but may emit it with
628 * g_signal_emit_by_name() if they need to control the cursor
631 * The default bindings for this signal come in two variants,
632 * the variant with the Shift modifier extends the selection,
633 * the variant without the Shift modifer does not.
634 * There are too many key combinations to list them all here.
636 * <listitem>Arrow keys move by individual characters/lines</listitem>
637 * <listitem>Ctrl-arrow key combinations move by words/paragraphs</listitem>
638 * <listitem>Home/End keys move to the ends of the buffer</listitem>
641 signals[MOVE_CURSOR] =
642 g_signal_new (I_("move-cursor"),
643 G_OBJECT_CLASS_TYPE (gobject_class),
644 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
645 G_STRUCT_OFFSET (GtkLabelClass, move_cursor),
647 _gtk_marshal_VOID__ENUM_INT_BOOLEAN,
649 GTK_TYPE_MOVEMENT_STEP,
654 * GtkLabel::copy-clipboard:
655 * @label: the object which received the signal
657 * The ::copy-clipboard signal is a
658 * <link linkend="keybinding-signals">keybinding signal</link>
659 * which gets emitted to copy the selection to the clipboard.
661 * The default binding for this signal is Ctrl-c.
663 signals[COPY_CLIPBOARD] =
664 g_signal_new (I_("copy-clipboard"),
665 G_OBJECT_CLASS_TYPE (gobject_class),
666 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
667 G_STRUCT_OFFSET (GtkLabelClass, copy_clipboard),
669 _gtk_marshal_VOID__VOID,
673 * GtkLabel::populate-popup:
674 * @label: The label on which the signal is emitted
675 * @menu: the menu that is being populated
677 * The ::populate-popup signal gets emitted before showing the
678 * context menu of the label. Note that only selectable labels
679 * have context menus.
681 * If you need to add items to the context menu, connect
682 * to this signal and append your menuitems to the @menu.
684 signals[POPULATE_POPUP] =
685 g_signal_new (I_("populate-popup"),
686 G_OBJECT_CLASS_TYPE (gobject_class),
688 G_STRUCT_OFFSET (GtkLabelClass, populate_popup),
690 _gtk_marshal_VOID__OBJECT,
695 * GtkLabel::activate-current-link:
696 * @label: The label on which the signal was emitted
698 * A <link linkend="keybinding-signals">keybinding signal</link>
699 * which gets emitted when the user activates a link in the label.
701 * Applications may also emit the signal with g_signal_emit_by_name()
702 * if they need to control activation of URIs programmatically.
704 * The default bindings for this signal are all forms of the Enter key.
708 signals[ACTIVATE_CURRENT_LINK] =
709 g_signal_new_class_handler ("activate-current-link",
710 G_TYPE_FROM_CLASS (gobject_class),
711 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
712 G_CALLBACK (gtk_label_activate_current_link),
714 _gtk_marshal_VOID__VOID,
718 * GtkLabel::activate-link:
719 * @label: The label on which the signal was emitted
720 * @uri: the URI that is activated
722 * The signal which gets emitted to activate a URI.
723 * Applications may connect to it to override the default behaviour,
724 * which is to call gtk_show_uri().
726 * Returns: %TRUE if the link has been activated
730 signals[ACTIVATE_LINK] =
731 g_signal_new ("activate-link",
732 G_TYPE_FROM_CLASS (gobject_class),
734 G_STRUCT_OFFSET (GtkLabelClass, activate_link),
735 _gtk_boolean_handled_accumulator, NULL,
736 _gtk_marshal_BOOLEAN__STRING,
737 G_TYPE_BOOLEAN, 1, G_TYPE_STRING);
739 g_object_class_install_property (gobject_class,
741 g_param_spec_string ("label",
743 P_("The text of the label"),
745 GTK_PARAM_READWRITE));
746 g_object_class_install_property (gobject_class,
748 g_param_spec_boxed ("attributes",
750 P_("A list of style attributes to apply to the text of the label"),
751 PANGO_TYPE_ATTR_LIST,
752 GTK_PARAM_READWRITE));
753 g_object_class_install_property (gobject_class,
755 g_param_spec_boolean ("use-markup",
757 P_("The text of the label includes XML markup. See pango_parse_markup()"),
759 GTK_PARAM_READWRITE));
760 g_object_class_install_property (gobject_class,
762 g_param_spec_boolean ("use-underline",
764 P_("If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key"),
766 GTK_PARAM_READWRITE));
768 g_object_class_install_property (gobject_class,
770 g_param_spec_enum ("justify",
772 P_("The alignment of the lines in the text of the label relative to each other. This does NOT affect the alignment of the label within its allocation. See GtkMisc::xalign for that"),
773 GTK_TYPE_JUSTIFICATION,
775 GTK_PARAM_READWRITE));
777 g_object_class_install_property (gobject_class,
779 g_param_spec_string ("pattern",
781 P_("A string with _ characters in positions correspond to characters in the text to underline"),
783 GTK_PARAM_WRITABLE));
785 g_object_class_install_property (gobject_class,
787 g_param_spec_boolean ("wrap",
789 P_("If set, wrap lines if the text becomes too wide"),
791 GTK_PARAM_READWRITE));
793 * GtkLabel:wrap-mode:
795 * If line wrapping is on (see the #GtkLabel:wrap property) this controls
796 * how the line wrapping is done. The default is %PANGO_WRAP_WORD, which
797 * means wrap on word boundaries.
801 g_object_class_install_property (gobject_class,
803 g_param_spec_enum ("wrap-mode",
804 P_("Line wrap mode"),
805 P_("If wrap is set, controls how linewrapping is done"),
806 PANGO_TYPE_WRAP_MODE,
808 GTK_PARAM_READWRITE));
809 g_object_class_install_property (gobject_class,
811 g_param_spec_boolean ("selectable",
813 P_("Whether the label text can be selected with the mouse"),
815 GTK_PARAM_READWRITE));
816 g_object_class_install_property (gobject_class,
817 PROP_MNEMONIC_KEYVAL,
818 g_param_spec_uint ("mnemonic-keyval",
820 P_("The mnemonic accelerator key for this label"),
824 GTK_PARAM_READABLE));
825 g_object_class_install_property (gobject_class,
826 PROP_MNEMONIC_WIDGET,
827 g_param_spec_object ("mnemonic-widget",
828 P_("Mnemonic widget"),
829 P_("The widget to be activated when the label's mnemonic "
832 GTK_PARAM_READWRITE));
834 g_object_class_install_property (gobject_class,
835 PROP_CURSOR_POSITION,
836 g_param_spec_int ("cursor-position",
837 P_("Cursor Position"),
838 P_("The current position of the insertion cursor in chars"),
842 GTK_PARAM_READABLE));
844 g_object_class_install_property (gobject_class,
845 PROP_SELECTION_BOUND,
846 g_param_spec_int ("selection-bound",
847 P_("Selection Bound"),
848 P_("The position of the opposite end of the selection from the cursor in chars"),
852 GTK_PARAM_READABLE));
855 * GtkLabel:ellipsize:
857 * The preferred place to ellipsize the string, if the label does
858 * not have enough room to display the entire string, specified as a
859 * #PangoEllisizeMode.
861 * Note that setting this property to a value other than
862 * %PANGO_ELLIPSIZE_NONE has the side-effect that the label requests
863 * only enough space to display the ellipsis "...". In particular, this
864 * means that ellipsizing labels do not work well in notebook tabs, unless
865 * the tab's #GtkNotebook:tab-expand property is set to %TRUE. Other ways
866 * to set a label's width are gtk_widget_set_size_request() and
867 * gtk_label_set_width_chars().
871 g_object_class_install_property (gobject_class,
873 g_param_spec_enum ("ellipsize",
875 P_("The preferred place to ellipsize the string, if the label does not have enough room to display the entire string"),
876 PANGO_TYPE_ELLIPSIZE_MODE,
877 PANGO_ELLIPSIZE_NONE,
878 GTK_PARAM_READWRITE));
881 * GtkLabel:width-chars:
883 * The desired width of the label, in characters. If this property is set to
884 * -1, the width will be calculated automatically.
886 * See the section on <link linkend="label-text-layout">text layout</link>
887 * for details of how #GtkLabel:width-chars and #GtkLabel:max-width-chars
888 * determine the width of ellipsized and wrapped labels.
892 g_object_class_install_property (gobject_class,
894 g_param_spec_int ("width-chars",
895 P_("Width In Characters"),
896 P_("The desired width of the label, in characters"),
900 GTK_PARAM_READWRITE));
903 * GtkLabel:single-line-mode:
905 * Whether the label is in single line mode. In single line mode,
906 * the height of the label does not depend on the actual text, it
907 * is always set to ascent + descent of the font. This can be an
908 * advantage in situations where resizing the label because of text
909 * changes would be distracting, e.g. in a statusbar.
913 g_object_class_install_property (gobject_class,
914 PROP_SINGLE_LINE_MODE,
915 g_param_spec_boolean ("single-line-mode",
916 P_("Single Line Mode"),
917 P_("Whether the label is in single line mode"),
919 GTK_PARAM_READWRITE));
924 * The angle that the baseline of the label makes with the horizontal,
925 * in degrees, measured counterclockwise. An angle of 90 reads from
926 * from bottom to top, an angle of 270, from top to bottom. Ignored
927 * if the label is selectable, wrapped, or ellipsized.
931 g_object_class_install_property (gobject_class,
933 g_param_spec_double ("angle",
935 P_("Angle at which the label is rotated"),
939 GTK_PARAM_READWRITE));
942 * GtkLabel:max-width-chars:
944 * The desired maximum width of the label, in characters. If this property
945 * is set to -1, the width will be calculated automatically.
947 * See the section on <link linkend="label-text-layout">text layout</link>
948 * for details of how #GtkLabel:width-chars and #GtkLabel:max-width-chars
949 * determine the width of ellipsized and wrapped labels.
953 g_object_class_install_property (gobject_class,
954 PROP_MAX_WIDTH_CHARS,
955 g_param_spec_int ("max-width-chars",
956 P_("Maximum Width In Characters"),
957 P_("The desired maximum width of the label, in characters"),
961 GTK_PARAM_READWRITE));
964 * GtkLabel:track-visited-links:
966 * Set this property to %TRUE to make the label track which links
967 * have been clicked. It will then apply the ::visited-link-color
968 * color, instead of ::link-color.
972 g_object_class_install_property (gobject_class,
973 PROP_TRACK_VISITED_LINKS,
974 g_param_spec_boolean ("track-visited-links",
975 P_("Track visited links"),
976 P_("Whether visited links should be tracked"),
978 GTK_PARAM_READWRITE));
983 binding_set = gtk_binding_set_by_class (class);
985 /* Moving the insertion point */
986 add_move_binding (binding_set, GDK_KEY_Right, 0,
987 GTK_MOVEMENT_VISUAL_POSITIONS, 1);
989 add_move_binding (binding_set, GDK_KEY_Left, 0,
990 GTK_MOVEMENT_VISUAL_POSITIONS, -1);
992 add_move_binding (binding_set, GDK_KEY_KP_Right, 0,
993 GTK_MOVEMENT_VISUAL_POSITIONS, 1);
995 add_move_binding (binding_set, GDK_KEY_KP_Left, 0,
996 GTK_MOVEMENT_VISUAL_POSITIONS, -1);
998 add_move_binding (binding_set, GDK_KEY_f, GDK_CONTROL_MASK,
999 GTK_MOVEMENT_LOGICAL_POSITIONS, 1);
1001 add_move_binding (binding_set, GDK_KEY_b, GDK_CONTROL_MASK,
1002 GTK_MOVEMENT_LOGICAL_POSITIONS, -1);
1004 add_move_binding (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1005 GTK_MOVEMENT_WORDS, 1);
1007 add_move_binding (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1008 GTK_MOVEMENT_WORDS, -1);
1010 add_move_binding (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1011 GTK_MOVEMENT_WORDS, 1);
1013 add_move_binding (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1014 GTK_MOVEMENT_WORDS, -1);
1017 gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
1019 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1021 G_TYPE_BOOLEAN, FALSE);
1023 gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
1025 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1027 G_TYPE_BOOLEAN, TRUE);
1029 gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK,
1031 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1033 G_TYPE_BOOLEAN, FALSE);
1035 gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK,
1037 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1039 G_TYPE_BOOLEAN, TRUE);
1042 gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
1044 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1046 G_TYPE_BOOLEAN, FALSE);
1048 gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK,
1050 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1052 G_TYPE_BOOLEAN, FALSE);
1054 add_move_binding (binding_set, GDK_KEY_f, GDK_MOD1_MASK,
1055 GTK_MOVEMENT_WORDS, 1);
1057 add_move_binding (binding_set, GDK_KEY_b, GDK_MOD1_MASK,
1058 GTK_MOVEMENT_WORDS, -1);
1060 add_move_binding (binding_set, GDK_KEY_Home, 0,
1061 GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
1063 add_move_binding (binding_set, GDK_KEY_End, 0,
1064 GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
1066 add_move_binding (binding_set, GDK_KEY_KP_Home, 0,
1067 GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
1069 add_move_binding (binding_set, GDK_KEY_KP_End, 0,
1070 GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
1072 add_move_binding (binding_set, GDK_KEY_Home, GDK_CONTROL_MASK,
1073 GTK_MOVEMENT_BUFFER_ENDS, -1);
1075 add_move_binding (binding_set, GDK_KEY_End, GDK_CONTROL_MASK,
1076 GTK_MOVEMENT_BUFFER_ENDS, 1);
1078 add_move_binding (binding_set, GDK_KEY_KP_Home, GDK_CONTROL_MASK,
1079 GTK_MOVEMENT_BUFFER_ENDS, -1);
1081 add_move_binding (binding_set, GDK_KEY_KP_End, GDK_CONTROL_MASK,
1082 GTK_MOVEMENT_BUFFER_ENDS, 1);
1085 gtk_binding_entry_add_signal (binding_set, GDK_KEY_c, GDK_CONTROL_MASK,
1086 "copy-clipboard", 0);
1088 gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0,
1089 "activate-current-link", 0);
1090 gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0,
1091 "activate-current-link", 0);
1092 gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0,
1093 "activate-current-link", 0);
1095 g_type_class_add_private (class, sizeof (GtkLabelPrivate));
1099 gtk_label_set_property (GObject *object,
1101 const GValue *value,
1104 GtkLabel *label = GTK_LABEL (object);
1109 gtk_label_set_label (label, g_value_get_string (value));
1111 case PROP_ATTRIBUTES:
1112 gtk_label_set_attributes (label, g_value_get_boxed (value));
1114 case PROP_USE_MARKUP:
1115 gtk_label_set_use_markup (label, g_value_get_boolean (value));
1117 case PROP_USE_UNDERLINE:
1118 gtk_label_set_use_underline (label, g_value_get_boolean (value));
1121 gtk_label_set_justify (label, g_value_get_enum (value));
1124 gtk_label_set_pattern (label, g_value_get_string (value));
1127 gtk_label_set_line_wrap (label, g_value_get_boolean (value));
1129 case PROP_WRAP_MODE:
1130 gtk_label_set_line_wrap_mode (label, g_value_get_enum (value));
1132 case PROP_SELECTABLE:
1133 gtk_label_set_selectable (label, g_value_get_boolean (value));
1135 case PROP_MNEMONIC_WIDGET:
1136 gtk_label_set_mnemonic_widget (label, (GtkWidget*) g_value_get_object (value));
1138 case PROP_ELLIPSIZE:
1139 gtk_label_set_ellipsize (label, g_value_get_enum (value));
1141 case PROP_WIDTH_CHARS:
1142 gtk_label_set_width_chars (label, g_value_get_int (value));
1144 case PROP_SINGLE_LINE_MODE:
1145 gtk_label_set_single_line_mode (label, g_value_get_boolean (value));
1148 gtk_label_set_angle (label, g_value_get_double (value));
1150 case PROP_MAX_WIDTH_CHARS:
1151 gtk_label_set_max_width_chars (label, g_value_get_int (value));
1153 case PROP_TRACK_VISITED_LINKS:
1154 gtk_label_set_track_visited_links (label, g_value_get_boolean (value));
1157 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1163 gtk_label_get_property (GObject *object,
1168 GtkLabel *label = GTK_LABEL (object);
1169 GtkLabelPrivate *priv = label->priv;
1174 g_value_set_string (value, priv->label);
1176 case PROP_ATTRIBUTES:
1177 g_value_set_boxed (value, priv->attrs);
1179 case PROP_USE_MARKUP:
1180 g_value_set_boolean (value, priv->use_markup);
1182 case PROP_USE_UNDERLINE:
1183 g_value_set_boolean (value, priv->use_underline);
1186 g_value_set_enum (value, priv->jtype);
1189 g_value_set_boolean (value, priv->wrap);
1191 case PROP_WRAP_MODE:
1192 g_value_set_enum (value, priv->wrap_mode);
1194 case PROP_SELECTABLE:
1195 g_value_set_boolean (value, gtk_label_get_selectable (label));
1197 case PROP_MNEMONIC_KEYVAL:
1198 g_value_set_uint (value, priv->mnemonic_keyval);
1200 case PROP_MNEMONIC_WIDGET:
1201 g_value_set_object (value, (GObject*) priv->mnemonic_widget);
1203 case PROP_CURSOR_POSITION:
1204 if (priv->select_info && priv->select_info->selectable)
1206 gint offset = g_utf8_pointer_to_offset (priv->text,
1207 priv->text + priv->select_info->selection_end);
1208 g_value_set_int (value, offset);
1211 g_value_set_int (value, 0);
1213 case PROP_SELECTION_BOUND:
1214 if (priv->select_info && priv->select_info->selectable)
1216 gint offset = g_utf8_pointer_to_offset (priv->text,
1217 priv->text + priv->select_info->selection_anchor);
1218 g_value_set_int (value, offset);
1221 g_value_set_int (value, 0);
1223 case PROP_ELLIPSIZE:
1224 g_value_set_enum (value, priv->ellipsize);
1226 case PROP_WIDTH_CHARS:
1227 g_value_set_int (value, gtk_label_get_width_chars (label));
1229 case PROP_SINGLE_LINE_MODE:
1230 g_value_set_boolean (value, gtk_label_get_single_line_mode (label));
1233 g_value_set_double (value, gtk_label_get_angle (label));
1235 case PROP_MAX_WIDTH_CHARS:
1236 g_value_set_int (value, gtk_label_get_max_width_chars (label));
1238 case PROP_TRACK_VISITED_LINKS:
1239 g_value_set_boolean (value, gtk_label_get_track_visited_links (label));
1242 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1248 gtk_label_init (GtkLabel *label)
1250 GtkLabelPrivate *priv;
1252 label->priv = G_TYPE_INSTANCE_GET_PRIVATE (label,
1257 gtk_widget_set_has_window (GTK_WIDGET (label), FALSE);
1259 priv->width_chars = -1;
1260 priv->max_width_chars = -1;
1263 priv->jtype = GTK_JUSTIFY_LEFT;
1265 priv->wrap_mode = PANGO_WRAP_WORD;
1266 priv->ellipsize = PANGO_ELLIPSIZE_NONE;
1268 priv->use_underline = FALSE;
1269 priv->use_markup = FALSE;
1270 priv->pattern_set = FALSE;
1271 priv->track_links = TRUE;
1273 priv->mnemonic_keyval = GDK_KEY_VoidSymbol;
1274 priv->layout = NULL;
1278 priv->mnemonic_widget = NULL;
1279 priv->mnemonic_window = NULL;
1281 priv->mnemonics_visible = TRUE;
1283 gtk_label_set_text (label, "");
1288 gtk_label_buildable_interface_init (GtkBuildableIface *iface)
1290 buildable_parent_iface = g_type_interface_peek_parent (iface);
1292 iface->custom_tag_start = gtk_label_buildable_custom_tag_start;
1293 iface->custom_finished = gtk_label_buildable_custom_finished;
1297 GtkBuilder *builder;
1299 PangoAttrList *attrs;
1302 static PangoAttribute *
1303 attribute_from_text (GtkBuilder *builder,
1308 PangoAttribute *attribute = NULL;
1310 PangoLanguage *language;
1311 PangoFontDescription *font_desc;
1313 GValue val = { 0, };
1315 if (!gtk_builder_value_from_string_type (builder, PANGO_TYPE_ATTR_TYPE, name, &val, error))
1318 type = g_value_get_enum (&val);
1319 g_value_unset (&val);
1323 /* PangoAttrLanguage */
1324 case PANGO_ATTR_LANGUAGE:
1325 if ((language = pango_language_from_string (value)))
1327 attribute = pango_attr_language_new (language);
1328 g_value_init (&val, G_TYPE_INT);
1332 case PANGO_ATTR_STYLE:
1333 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_STYLE, value, &val, error))
1334 attribute = pango_attr_style_new (g_value_get_enum (&val));
1336 case PANGO_ATTR_WEIGHT:
1337 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_WEIGHT, value, &val, error))
1338 attribute = pango_attr_weight_new (g_value_get_enum (&val));
1340 case PANGO_ATTR_VARIANT:
1341 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_VARIANT, value, &val, error))
1342 attribute = pango_attr_variant_new (g_value_get_enum (&val));
1344 case PANGO_ATTR_STRETCH:
1345 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_STRETCH, value, &val, error))
1346 attribute = pango_attr_stretch_new (g_value_get_enum (&val));
1348 case PANGO_ATTR_UNDERLINE:
1349 if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
1350 attribute = pango_attr_underline_new (g_value_get_boolean (&val));
1352 case PANGO_ATTR_STRIKETHROUGH:
1353 if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
1354 attribute = pango_attr_strikethrough_new (g_value_get_boolean (&val));
1356 case PANGO_ATTR_GRAVITY:
1357 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_GRAVITY, value, &val, error))
1358 attribute = pango_attr_gravity_new (g_value_get_enum (&val));
1360 case PANGO_ATTR_GRAVITY_HINT:
1361 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_GRAVITY_HINT,
1362 value, &val, error))
1363 attribute = pango_attr_gravity_hint_new (g_value_get_enum (&val));
1365 /* PangoAttrString */
1366 case PANGO_ATTR_FAMILY:
1367 attribute = pango_attr_family_new (value);
1368 g_value_init (&val, G_TYPE_INT);
1372 case PANGO_ATTR_SIZE:
1373 if (gtk_builder_value_from_string_type (builder, G_TYPE_INT,
1374 value, &val, error))
1375 attribute = pango_attr_size_new (g_value_get_int (&val));
1377 case PANGO_ATTR_ABSOLUTE_SIZE:
1378 if (gtk_builder_value_from_string_type (builder, G_TYPE_INT,
1379 value, &val, error))
1380 attribute = pango_attr_size_new_absolute (g_value_get_int (&val));
1383 /* PangoAttrFontDesc */
1384 case PANGO_ATTR_FONT_DESC:
1385 if ((font_desc = pango_font_description_from_string (value)))
1387 attribute = pango_attr_font_desc_new (font_desc);
1388 pango_font_description_free (font_desc);
1389 g_value_init (&val, G_TYPE_INT);
1393 /* PangoAttrColor */
1394 case PANGO_ATTR_FOREGROUND:
1395 if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
1396 value, &val, error))
1398 color = g_value_get_boxed (&val);
1399 attribute = pango_attr_foreground_new (color->red, color->green, color->blue);
1402 case PANGO_ATTR_BACKGROUND:
1403 if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
1404 value, &val, error))
1406 color = g_value_get_boxed (&val);
1407 attribute = pango_attr_background_new (color->red, color->green, color->blue);
1410 case PANGO_ATTR_UNDERLINE_COLOR:
1411 if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
1412 value, &val, error))
1414 color = g_value_get_boxed (&val);
1415 attribute = pango_attr_underline_color_new (color->red, color->green, color->blue);
1418 case PANGO_ATTR_STRIKETHROUGH_COLOR:
1419 if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
1420 value, &val, error))
1422 color = g_value_get_boxed (&val);
1423 attribute = pango_attr_strikethrough_color_new (color->red, color->green, color->blue);
1427 /* PangoAttrShape */
1428 case PANGO_ATTR_SHAPE:
1429 /* Unsupported for now */
1431 /* PangoAttrFloat */
1432 case PANGO_ATTR_SCALE:
1433 if (gtk_builder_value_from_string_type (builder, G_TYPE_DOUBLE,
1434 value, &val, error))
1435 attribute = pango_attr_scale_new (g_value_get_double (&val));
1438 case PANGO_ATTR_INVALID:
1439 case PANGO_ATTR_LETTER_SPACING:
1440 case PANGO_ATTR_RISE:
1441 case PANGO_ATTR_FALLBACK:
1446 g_value_unset (&val);
1453 pango_start_element (GMarkupParseContext *context,
1454 const gchar *element_name,
1455 const gchar **names,
1456 const gchar **values,
1460 PangoParserData *data = (PangoParserData*)user_data;
1461 GValue val = { 0, };
1463 gint line_number, char_number;
1465 if (strcmp (element_name, "attribute") == 0)
1467 PangoAttribute *attr = NULL;
1468 const gchar *name = NULL;
1469 const gchar *value = NULL;
1470 const gchar *start = NULL;
1471 const gchar *end = NULL;
1472 guint start_val = 0;
1473 guint end_val = G_MAXUINT;
1475 for (i = 0; names[i]; i++)
1477 if (strcmp (names[i], "name") == 0)
1479 else if (strcmp (names[i], "value") == 0)
1481 else if (strcmp (names[i], "start") == 0)
1483 else if (strcmp (names[i], "end") == 0)
1487 g_markup_parse_context_get_position (context,
1492 GTK_BUILDER_ERROR_INVALID_ATTRIBUTE,
1493 "%s:%d:%d '%s' is not a valid attribute of <%s>",
1495 line_number, char_number, names[i], "attribute");
1500 if (!name || !value)
1502 g_markup_parse_context_get_position (context,
1507 GTK_BUILDER_ERROR_MISSING_ATTRIBUTE,
1508 "%s:%d:%d <%s> requires attribute \"%s\"",
1510 line_number, char_number, "attribute",
1511 name ? "value" : "name");
1517 if (!gtk_builder_value_from_string_type (data->builder, G_TYPE_UINT,
1518 start, &val, error))
1520 start_val = g_value_get_uint (&val);
1521 g_value_unset (&val);
1526 if (!gtk_builder_value_from_string_type (data->builder, G_TYPE_UINT,
1529 end_val = g_value_get_uint (&val);
1530 g_value_unset (&val);
1533 attr = attribute_from_text (data->builder, name, value, error);
1537 attr->start_index = start_val;
1538 attr->end_index = end_val;
1541 data->attrs = pango_attr_list_new ();
1543 pango_attr_list_insert (data->attrs, attr);
1546 else if (strcmp (element_name, "attributes") == 0)
1549 g_warning ("Unsupported tag for GtkLabel: %s\n", element_name);
1552 static const GMarkupParser pango_parser =
1554 pango_start_element,
1558 gtk_label_buildable_custom_tag_start (GtkBuildable *buildable,
1559 GtkBuilder *builder,
1561 const gchar *tagname,
1562 GMarkupParser *parser,
1565 if (buildable_parent_iface->custom_tag_start (buildable, builder, child,
1566 tagname, parser, data))
1569 if (strcmp (tagname, "attributes") == 0)
1571 PangoParserData *parser_data;
1573 parser_data = g_slice_new0 (PangoParserData);
1574 parser_data->builder = g_object_ref (builder);
1575 parser_data->object = g_object_ref (buildable);
1576 *parser = pango_parser;
1577 *data = parser_data;
1584 gtk_label_buildable_custom_finished (GtkBuildable *buildable,
1585 GtkBuilder *builder,
1587 const gchar *tagname,
1590 PangoParserData *data;
1592 buildable_parent_iface->custom_finished (buildable, builder, child,
1593 tagname, user_data);
1595 if (strcmp (tagname, "attributes") == 0)
1597 data = (PangoParserData*)user_data;
1601 gtk_label_set_attributes (GTK_LABEL (buildable), data->attrs);
1602 pango_attr_list_unref (data->attrs);
1605 g_object_unref (data->object);
1606 g_object_unref (data->builder);
1607 g_slice_free (PangoParserData, data);
1614 * @str: The text of the label
1616 * Creates a new label with the given text inside it. You can
1617 * pass %NULL to get an empty label widget.
1619 * Return value: the new #GtkLabel
1622 gtk_label_new (const gchar *str)
1626 label = g_object_new (GTK_TYPE_LABEL, NULL);
1629 gtk_label_set_text (label, str);
1631 return GTK_WIDGET (label);
1635 * gtk_label_new_with_mnemonic:
1636 * @str: The text of the label, with an underscore in front of the
1637 * mnemonic character
1639 * Creates a new #GtkLabel, containing the text in @str.
1641 * If characters in @str are preceded by an underscore, they are
1642 * underlined. If you need a literal underscore character in a label, use
1643 * '__' (two underscores). The first underlined character represents a
1644 * keyboard accelerator called a mnemonic. The mnemonic key can be used
1645 * to activate another widget, chosen automatically, or explicitly using
1646 * gtk_label_set_mnemonic_widget().
1648 * If gtk_label_set_mnemonic_widget() is not called, then the first
1649 * activatable ancestor of the #GtkLabel will be chosen as the mnemonic
1650 * widget. For instance, if the label is inside a button or menu item,
1651 * the button or menu item will automatically become the mnemonic widget
1652 * and be activated by the mnemonic.
1654 * Return value: the new #GtkLabel
1657 gtk_label_new_with_mnemonic (const gchar *str)
1661 label = g_object_new (GTK_TYPE_LABEL, NULL);
1664 gtk_label_set_text_with_mnemonic (label, str);
1666 return GTK_WIDGET (label);
1670 gtk_label_mnemonic_activate (GtkWidget *widget,
1671 gboolean group_cycling)
1673 GtkLabel *label = GTK_LABEL (widget);
1674 GtkLabelPrivate *priv = label->priv;
1677 if (priv->mnemonic_widget)
1678 return gtk_widget_mnemonic_activate (priv->mnemonic_widget, group_cycling);
1680 /* Try to find the widget to activate by traversing the
1681 * widget's ancestry.
1683 parent = gtk_widget_get_parent (widget);
1685 if (GTK_IS_NOTEBOOK (parent))
1690 if (gtk_widget_get_can_focus (parent) ||
1691 (!group_cycling && GTK_WIDGET_GET_CLASS (parent)->activate_signal) ||
1692 GTK_IS_NOTEBOOK (gtk_widget_get_parent (parent)) ||
1693 GTK_IS_MENU_ITEM (parent))
1694 return gtk_widget_mnemonic_activate (parent, group_cycling);
1695 parent = gtk_widget_get_parent (parent);
1698 /* barf if there was nothing to activate */
1699 g_warning ("Couldn't find a target for a mnemonic activation.");
1700 gtk_widget_error_bell (widget);
1706 gtk_label_setup_mnemonic (GtkLabel *label,
1709 GtkLabelPrivate *priv = label->priv;
1710 GtkWidget *widget = GTK_WIDGET (label);
1711 GtkWidget *toplevel;
1712 GtkWidget *mnemonic_menu;
1714 mnemonic_menu = g_object_get_data (G_OBJECT (label), "gtk-mnemonic-menu");
1716 if (last_key != GDK_KEY_VoidSymbol)
1718 if (priv->mnemonic_window)
1720 gtk_window_remove_mnemonic (priv->mnemonic_window,
1723 priv->mnemonic_window = NULL;
1727 _gtk_menu_shell_remove_mnemonic (GTK_MENU_SHELL (mnemonic_menu),
1730 mnemonic_menu = NULL;
1734 if (priv->mnemonic_keyval == GDK_KEY_VoidSymbol)
1737 connect_mnemonics_visible_notify (GTK_LABEL (widget));
1739 toplevel = gtk_widget_get_toplevel (widget);
1740 if (gtk_widget_is_toplevel (toplevel))
1742 GtkWidget *menu_shell;
1744 menu_shell = gtk_widget_get_ancestor (widget,
1745 GTK_TYPE_MENU_SHELL);
1749 _gtk_menu_shell_add_mnemonic (GTK_MENU_SHELL (menu_shell),
1750 priv->mnemonic_keyval,
1752 mnemonic_menu = menu_shell;
1755 if (!GTK_IS_MENU (menu_shell))
1757 gtk_window_add_mnemonic (GTK_WINDOW (toplevel),
1758 priv->mnemonic_keyval,
1760 priv->mnemonic_window = GTK_WINDOW (toplevel);
1765 g_object_set_data (G_OBJECT (label), I_("gtk-mnemonic-menu"), mnemonic_menu);
1769 gtk_label_hierarchy_changed (GtkWidget *widget,
1770 GtkWidget *old_toplevel)
1772 GtkLabel *label = GTK_LABEL (widget);
1773 GtkLabelPrivate *priv = label->priv;
1775 gtk_label_setup_mnemonic (label, priv->mnemonic_keyval);
1779 label_shortcut_setting_apply (GtkLabel *label)
1781 gtk_label_recalculate (label);
1782 if (GTK_IS_ACCEL_LABEL (label))
1783 gtk_accel_label_refetch (GTK_ACCEL_LABEL (label));
1787 label_shortcut_setting_traverse_container (GtkWidget *widget,
1790 if (GTK_IS_LABEL (widget))
1791 label_shortcut_setting_apply (GTK_LABEL (widget));
1792 else if (GTK_IS_CONTAINER (widget))
1793 gtk_container_forall (GTK_CONTAINER (widget),
1794 label_shortcut_setting_traverse_container, data);
1798 label_shortcut_setting_changed (GtkSettings *settings)
1802 list = gtk_window_list_toplevels ();
1804 for (l = list; l ; l = l->next)
1806 GtkWidget *widget = l->data;
1808 if (gtk_widget_get_settings (widget) == settings)
1809 gtk_container_forall (GTK_CONTAINER (widget),
1810 label_shortcut_setting_traverse_container, NULL);
1817 mnemonics_visible_apply (GtkWidget *widget,
1818 gboolean mnemonics_visible)
1820 GtkLabel *label = GTK_LABEL (widget);
1821 GtkLabelPrivate *priv = label->priv;
1823 mnemonics_visible = mnemonics_visible != FALSE;
1825 if (priv->mnemonics_visible != mnemonics_visible)
1827 priv->mnemonics_visible = mnemonics_visible;
1829 gtk_label_recalculate (label);
1834 label_mnemonics_visible_traverse_container (GtkWidget *widget,
1837 gboolean mnemonics_visible = GPOINTER_TO_INT (data);
1839 _gtk_label_mnemonics_visible_apply_recursively (widget, mnemonics_visible);
1843 _gtk_label_mnemonics_visible_apply_recursively (GtkWidget *widget,
1844 gboolean mnemonics_visible)
1846 if (GTK_IS_LABEL (widget))
1847 mnemonics_visible_apply (widget, mnemonics_visible);
1848 else if (GTK_IS_CONTAINER (widget))
1849 gtk_container_forall (GTK_CONTAINER (widget),
1850 label_mnemonics_visible_traverse_container,
1851 GINT_TO_POINTER (mnemonics_visible));
1855 label_mnemonics_visible_changed (GtkWindow *window,
1859 gboolean mnemonics_visible;
1861 g_object_get (window, "mnemonics-visible", &mnemonics_visible, NULL);
1863 gtk_container_forall (GTK_CONTAINER (window),
1864 label_mnemonics_visible_traverse_container,
1865 GINT_TO_POINTER (mnemonics_visible));
1869 gtk_label_screen_changed (GtkWidget *widget,
1870 GdkScreen *old_screen)
1872 GtkSettings *settings;
1873 gboolean shortcuts_connected;
1875 if (!gtk_widget_has_screen (widget))
1878 settings = gtk_widget_get_settings (widget);
1880 shortcuts_connected =
1881 GPOINTER_TO_INT (g_object_get_data (G_OBJECT (settings),
1882 "gtk-label-shortcuts-connected"));
1884 if (! shortcuts_connected)
1886 g_signal_connect (settings, "notify::gtk-enable-mnemonics",
1887 G_CALLBACK (label_shortcut_setting_changed),
1889 g_signal_connect (settings, "notify::gtk-enable-accels",
1890 G_CALLBACK (label_shortcut_setting_changed),
1893 g_object_set_data (G_OBJECT (settings), "gtk-label-shortcuts-connected",
1894 GINT_TO_POINTER (TRUE));
1897 label_shortcut_setting_apply (GTK_LABEL (widget));
1902 label_mnemonic_widget_weak_notify (gpointer data,
1903 GObject *where_the_object_was)
1905 GtkLabel *label = data;
1906 GtkLabelPrivate *priv = label->priv;
1908 priv->mnemonic_widget = NULL;
1909 g_object_notify (G_OBJECT (label), "mnemonic-widget");
1913 * gtk_label_set_mnemonic_widget:
1914 * @label: a #GtkLabel
1915 * @widget: (allow-none): the target #GtkWidget
1917 * If the label has been set so that it has an mnemonic key (using
1918 * i.e. gtk_label_set_markup_with_mnemonic(),
1919 * gtk_label_set_text_with_mnemonic(), gtk_label_new_with_mnemonic()
1920 * or the "use_underline" property) the label can be associated with a
1921 * widget that is the target of the mnemonic. When the label is inside
1922 * a widget (like a #GtkButton or a #GtkNotebook tab) it is
1923 * automatically associated with the correct widget, but sometimes
1924 * (i.e. when the target is a #GtkEntry next to the label) you need to
1925 * set it explicitly using this function.
1927 * The target widget will be accelerated by emitting the
1928 * GtkWidget::mnemonic-activate signal on it. The default handler for
1929 * this signal will activate the widget if there are no mnemonic collisions
1930 * and toggle focus between the colliding widgets otherwise.
1933 gtk_label_set_mnemonic_widget (GtkLabel *label,
1936 GtkLabelPrivate *priv;
1938 g_return_if_fail (GTK_IS_LABEL (label));
1943 g_return_if_fail (GTK_IS_WIDGET (widget));
1945 if (priv->mnemonic_widget)
1947 gtk_widget_remove_mnemonic_label (priv->mnemonic_widget, GTK_WIDGET (label));
1948 g_object_weak_unref (G_OBJECT (priv->mnemonic_widget),
1949 label_mnemonic_widget_weak_notify,
1952 priv->mnemonic_widget = widget;
1953 if (priv->mnemonic_widget)
1955 g_object_weak_ref (G_OBJECT (priv->mnemonic_widget),
1956 label_mnemonic_widget_weak_notify,
1958 gtk_widget_add_mnemonic_label (priv->mnemonic_widget, GTK_WIDGET (label));
1961 g_object_notify (G_OBJECT (label), "mnemonic-widget");
1965 * gtk_label_get_mnemonic_widget:
1966 * @label: a #GtkLabel
1968 * Retrieves the target of the mnemonic (keyboard shortcut) of this
1969 * label. See gtk_label_set_mnemonic_widget().
1971 * Return value: (transfer none): the target of the label's mnemonic,
1972 * or %NULL if none has been set and the default algorithm will be used.
1975 gtk_label_get_mnemonic_widget (GtkLabel *label)
1977 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
1979 return label->priv->mnemonic_widget;
1983 * gtk_label_get_mnemonic_keyval:
1984 * @label: a #GtkLabel
1986 * If the label has been set so that it has an mnemonic key this function
1987 * returns the keyval used for the mnemonic accelerator. If there is no
1988 * mnemonic set up it returns #GDK_VoidSymbol.
1990 * Returns: GDK keyval usable for accelerators, or #GDK_VoidSymbol
1993 gtk_label_get_mnemonic_keyval (GtkLabel *label)
1995 g_return_val_if_fail (GTK_IS_LABEL (label), GDK_KEY_VoidSymbol);
1997 return label->priv->mnemonic_keyval;
2001 gtk_label_set_text_internal (GtkLabel *label,
2004 GtkLabelPrivate *priv = label->priv;
2006 g_free (priv->text);
2010 gtk_label_select_region_index (label, 0, 0);
2014 gtk_label_set_label_internal (GtkLabel *label,
2017 GtkLabelPrivate *priv = label->priv;
2019 g_free (priv->label);
2023 g_object_notify (G_OBJECT (label), "label");
2027 gtk_label_set_use_markup_internal (GtkLabel *label,
2030 GtkLabelPrivate *priv = label->priv;
2033 if (priv->use_markup != val)
2035 priv->use_markup = val;
2037 g_object_notify (G_OBJECT (label), "use-markup");
2042 gtk_label_set_use_underline_internal (GtkLabel *label,
2045 GtkLabelPrivate *priv = label->priv;
2048 if (priv->use_underline != val)
2050 priv->use_underline = val;
2052 g_object_notify (G_OBJECT (label), "use-underline");
2057 gtk_label_compose_effective_attrs (GtkLabel *label)
2059 GtkLabelPrivate *priv = label->priv;
2060 PangoAttrIterator *iter;
2061 PangoAttribute *attr;
2062 GSList *iter_attrs, *l;
2066 if (priv->effective_attrs)
2068 if ((iter = pango_attr_list_get_iterator (priv->attrs)))
2072 iter_attrs = pango_attr_iterator_get_attrs (iter);
2073 for (l = iter_attrs; l; l = l->next)
2076 pango_attr_list_insert (priv->effective_attrs, attr);
2078 g_slist_free (iter_attrs);
2080 while (pango_attr_iterator_next (iter));
2081 pango_attr_iterator_destroy (iter);
2085 priv->effective_attrs =
2086 pango_attr_list_ref (priv->attrs);
2091 gtk_label_set_attributes_internal (GtkLabel *label,
2092 PangoAttrList *attrs)
2094 GtkLabelPrivate *priv = label->priv;
2097 pango_attr_list_ref (attrs);
2100 pango_attr_list_unref (priv->attrs);
2101 priv->attrs = attrs;
2103 g_object_notify (G_OBJECT (label), "attributes");
2107 /* Calculates text, attrs and mnemonic_keyval from
2108 * label, use_underline and use_markup
2111 gtk_label_recalculate (GtkLabel *label)
2113 GtkLabelPrivate *priv = label->priv;
2114 guint keyval = priv->mnemonic_keyval;
2116 if (priv->use_markup)
2117 gtk_label_set_markup_internal (label, priv->label, priv->use_underline);
2120 if (priv->use_underline)
2121 gtk_label_set_uline_text_internal (label, priv->label);
2124 if (priv->effective_attrs)
2125 pango_attr_list_unref (priv->effective_attrs);
2126 priv->effective_attrs = NULL;
2127 gtk_label_set_text_internal (label, g_strdup (priv->label));
2131 gtk_label_compose_effective_attrs (label);
2133 if (!priv->use_underline)
2134 priv->mnemonic_keyval = GDK_KEY_VoidSymbol;
2136 if (keyval != priv->mnemonic_keyval)
2138 gtk_label_setup_mnemonic (label, keyval);
2139 g_object_notify (G_OBJECT (label), "mnemonic-keyval");
2142 gtk_label_clear_layout (label);
2143 gtk_label_clear_select_info (label);
2144 gtk_widget_queue_resize (GTK_WIDGET (label));
2148 * gtk_label_set_text:
2149 * @label: a #GtkLabel
2150 * @str: The text you want to set
2152 * Sets the text within the #GtkLabel widget. It overwrites any text that
2155 * This will also clear any previously set mnemonic accelerators.
2158 gtk_label_set_text (GtkLabel *label,
2161 g_return_if_fail (GTK_IS_LABEL (label));
2163 g_object_freeze_notify (G_OBJECT (label));
2165 gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
2166 gtk_label_set_use_markup_internal (label, FALSE);
2167 gtk_label_set_use_underline_internal (label, FALSE);
2169 gtk_label_recalculate (label);
2171 g_object_thaw_notify (G_OBJECT (label));
2175 * gtk_label_set_attributes:
2176 * @label: a #GtkLabel
2177 * @attrs: a #PangoAttrList
2179 * Sets a #PangoAttrList; the attributes in the list are applied to the
2182 * <note><para>The attributes set with this function will be applied
2183 * and merged with any other attributes previously effected by way
2184 * of the #GtkLabel:use-underline or #GtkLabel:use-markup properties.
2185 * While it is not recommended to mix markup strings with manually set
2186 * attributes, if you must; know that the attributes will be applied
2187 * to the label after the markup string is parsed.</para></note>
2190 gtk_label_set_attributes (GtkLabel *label,
2191 PangoAttrList *attrs)
2193 g_return_if_fail (GTK_IS_LABEL (label));
2195 gtk_label_set_attributes_internal (label, attrs);
2197 gtk_label_recalculate (label);
2199 gtk_label_clear_layout (label);
2200 gtk_widget_queue_resize (GTK_WIDGET (label));
2204 * gtk_label_get_attributes:
2205 * @label: a #GtkLabel
2207 * Gets the attribute list that was set on the label using
2208 * gtk_label_set_attributes(), if any. This function does
2209 * not reflect attributes that come from the labels markup
2210 * (see gtk_label_set_markup()). If you want to get the
2211 * effective attributes for the label, use
2212 * pango_layout_get_attribute (gtk_label_get_layout (label)).
2214 * Return value: (transfer none): the attribute list, or %NULL
2218 gtk_label_get_attributes (GtkLabel *label)
2220 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
2222 return label->priv->attrs;
2226 * gtk_label_set_label:
2227 * @label: a #GtkLabel
2228 * @str: the new text to set for the label
2230 * Sets the text of the label. The label is interpreted as
2231 * including embedded underlines and/or Pango markup depending
2232 * on the values of the #GtkLabel:use-underline" and
2233 * #GtkLabel:use-markup properties.
2236 gtk_label_set_label (GtkLabel *label,
2239 g_return_if_fail (GTK_IS_LABEL (label));
2241 g_object_freeze_notify (G_OBJECT (label));
2243 gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
2244 gtk_label_recalculate (label);
2246 g_object_thaw_notify (G_OBJECT (label));
2250 * gtk_label_get_label:
2251 * @label: a #GtkLabel
2253 * Fetches the text from a label widget including any embedded
2254 * underlines indicating mnemonics and Pango markup. (See
2255 * gtk_label_get_text()).
2257 * Return value: the text of the label widget. This string is
2258 * owned by the widget and must not be modified or freed.
2260 G_CONST_RETURN gchar *
2261 gtk_label_get_label (GtkLabel *label)
2263 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
2265 return label->priv->label;
2273 GdkColor *link_color;
2274 GdkColor *visited_link_color;
2278 start_element_handler (GMarkupParseContext *context,
2279 const gchar *element_name,
2280 const gchar **attribute_names,
2281 const gchar **attribute_values,
2285 GtkLabelPrivate *priv;
2286 UriParserData *pdata = user_data;
2288 if (strcmp (element_name, "a") == 0)
2291 const gchar *uri = NULL;
2292 const gchar *title = NULL;
2293 gboolean visited = FALSE;
2297 GdkColor *color = NULL;
2299 g_markup_parse_context_get_position (context, &line_number, &char_number);
2301 for (i = 0; attribute_names[i] != NULL; i++)
2303 const gchar *attr = attribute_names[i];
2305 if (strcmp (attr, "href") == 0)
2306 uri = attribute_values[i];
2307 else if (strcmp (attr, "title") == 0)
2308 title = attribute_values[i];
2313 G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE,
2314 "Attribute '%s' is not allowed on the <a> tag "
2315 "on line %d char %d",
2316 attr, line_number, char_number);
2325 G_MARKUP_ERROR_INVALID_CONTENT,
2326 "Attribute 'href' was missing on the <a> tag "
2327 "on line %d char %d",
2328 line_number, char_number);
2333 priv = pdata->label->priv;
2334 if (priv->track_links && priv->select_info)
2337 for (l = priv->select_info->links; l; l = l->next)
2340 if (strcmp (uri, link->uri) == 0)
2342 visited = link->visited;
2349 color = pdata->visited_link_color;
2351 color = pdata->link_color;
2353 g_string_append_printf (pdata->new_str,
2354 "<span color=\"#%04x%04x%04x\" underline=\"single\">",
2359 link = g_new0 (GtkLabelLink, 1);
2360 link->uri = g_strdup (uri);
2361 link->title = g_strdup (title);
2362 link->visited = visited;
2363 pdata->links = g_list_append (pdata->links, link);
2369 g_string_append_c (pdata->new_str, '<');
2370 g_string_append (pdata->new_str, element_name);
2372 for (i = 0; attribute_names[i] != NULL; i++)
2374 const gchar *attr = attribute_names[i];
2375 const gchar *value = attribute_values[i];
2378 newvalue = g_markup_escape_text (value, -1);
2380 g_string_append_c (pdata->new_str, ' ');
2381 g_string_append (pdata->new_str, attr);
2382 g_string_append (pdata->new_str, "=\"");
2383 g_string_append (pdata->new_str, newvalue);
2384 g_string_append_c (pdata->new_str, '\"');
2388 g_string_append_c (pdata->new_str, '>');
2393 end_element_handler (GMarkupParseContext *context,
2394 const gchar *element_name,
2398 UriParserData *pdata = user_data;
2400 if (!strcmp (element_name, "a"))
2401 g_string_append (pdata->new_str, "</span>");
2404 g_string_append (pdata->new_str, "</");
2405 g_string_append (pdata->new_str, element_name);
2406 g_string_append_c (pdata->new_str, '>');
2411 text_handler (GMarkupParseContext *context,
2417 UriParserData *pdata = user_data;
2420 newtext = g_markup_escape_text (text, text_len);
2421 g_string_append (pdata->new_str, newtext);
2425 static const GMarkupParser markup_parser =
2427 start_element_handler,
2428 end_element_handler,
2435 xml_isspace (gchar c)
2437 return (c == ' ' || c == '\t' || c == '\n' || c == '\r');
2441 link_free (GtkLabelLink *link)
2444 g_free (link->title);
2449 gtk_label_get_link_colors (GtkWidget *widget,
2450 GdkColor **link_color,
2451 GdkColor **visited_link_color)
2453 GtkStyleContext *context;
2455 context = gtk_widget_get_style_context (widget);
2456 gtk_style_context_get_style (context,
2457 "link-color", link_color,
2458 "visited-link-color", visited_link_color,
2461 *link_color = gdk_color_copy (&default_link_color);
2462 if (!*visited_link_color)
2463 *visited_link_color = gdk_color_copy (&default_visited_link_color);
2467 parse_uri_markup (GtkLabel *label,
2473 GMarkupParseContext *context = NULL;
2474 const gchar *p, *end;
2475 gboolean needs_root = TRUE;
2477 UriParserData pdata;
2479 length = strlen (str);
2483 pdata.label = label;
2485 pdata.new_str = g_string_sized_new (length);
2487 gtk_label_get_link_colors (GTK_WIDGET (label), &pdata.link_color, &pdata.visited_link_color);
2489 while (p != end && xml_isspace (*p))
2492 if (end - p >= 8 && strncmp (p, "<markup>", 8) == 0)
2495 context = g_markup_parse_context_new (&markup_parser, 0, &pdata, NULL);
2499 if (!g_markup_parse_context_parse (context, "<markup>", -1, error))
2503 if (!g_markup_parse_context_parse (context, str, length, error))
2508 if (!g_markup_parse_context_parse (context, "</markup>", -1, error))
2512 if (!g_markup_parse_context_end_parse (context, error))
2515 g_markup_parse_context_free (context);
2517 *new_str = g_string_free (pdata.new_str, FALSE);
2518 *links = pdata.links;
2520 gdk_color_free (pdata.link_color);
2521 gdk_color_free (pdata.visited_link_color);
2526 g_markup_parse_context_free (context);
2527 g_string_free (pdata.new_str, TRUE);
2528 g_list_foreach (pdata.links, (GFunc)link_free, NULL);
2529 g_list_free (pdata.links);
2530 gdk_color_free (pdata.link_color);
2531 gdk_color_free (pdata.visited_link_color);
2537 gtk_label_ensure_has_tooltip (GtkLabel *label)
2539 GtkLabelPrivate *priv = label->priv;
2541 gboolean has_tooltip = FALSE;
2543 for (l = priv->select_info->links; l; l = l->next)
2545 GtkLabelLink *link = l->data;
2553 gtk_widget_set_has_tooltip (GTK_WIDGET (label), has_tooltip);
2557 gtk_label_set_markup_internal (GtkLabel *label,
2559 gboolean with_uline)
2561 GtkLabelPrivate *priv = label->priv;
2563 GError *error = NULL;
2564 PangoAttrList *attrs = NULL;
2565 gunichar accel_char = 0;
2567 GList *links = NULL;
2569 if (!parse_uri_markup (label, str, &new_str, &links, &error))
2571 g_warning ("Failed to set text from markup due to error parsing markup: %s",
2573 g_error_free (error);
2577 gtk_label_clear_links (label);
2580 gtk_label_ensure_select_info (label);
2581 priv->select_info->links = links;
2582 gtk_label_ensure_has_tooltip (label);
2587 gboolean enable_mnemonics;
2588 gboolean auto_mnemonics;
2590 g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
2591 "gtk-enable-mnemonics", &enable_mnemonics,
2592 "gtk-auto-mnemonics", &auto_mnemonics,
2595 if (!(enable_mnemonics && priv->mnemonics_visible &&
2597 (gtk_widget_is_sensitive (GTK_WIDGET (label)) &&
2598 (!priv->mnemonic_widget ||
2599 gtk_widget_is_sensitive (priv->mnemonic_widget))))))
2605 if (separate_uline_pattern (new_str, &key, &tmp, &pattern))
2614 if (!pango_parse_markup (new_str,
2616 with_uline ? '_' : 0,
2619 with_uline ? &accel_char : NULL,
2622 g_warning ("Failed to set text from markup due to error parsing markup: %s",
2625 g_error_free (error);
2632 gtk_label_set_text_internal (label, text);
2636 if (priv->effective_attrs)
2637 pango_attr_list_unref (priv->effective_attrs);
2638 priv->effective_attrs = attrs;
2641 if (accel_char != 0)
2642 priv->mnemonic_keyval = gdk_keyval_to_lower (gdk_unicode_to_keyval (accel_char));
2644 priv->mnemonic_keyval = GDK_KEY_VoidSymbol;
2648 * gtk_label_set_markup:
2649 * @label: a #GtkLabel
2650 * @str: a markup string (see <link linkend="PangoMarkupFormat">Pango markup format</link>)
2652 * Parses @str which is marked up with the <link
2653 * linkend="PangoMarkupFormat">Pango text markup language</link>, setting the
2654 * label's text and attribute list based on the parse results. If the @str is
2655 * external data, you may need to escape it with g_markup_escape_text() or
2656 * g_markup_printf_escaped()<!-- -->:
2660 * markup = g_markup_printf_escaped ("<span style=\"italic\">%s</span>", str);
2661 * gtk_label_set_markup (GTK_LABEL (label), markup);
2666 gtk_label_set_markup (GtkLabel *label,
2669 g_return_if_fail (GTK_IS_LABEL (label));
2671 g_object_freeze_notify (G_OBJECT (label));
2673 gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
2674 gtk_label_set_use_markup_internal (label, TRUE);
2675 gtk_label_set_use_underline_internal (label, FALSE);
2677 gtk_label_recalculate (label);
2679 g_object_thaw_notify (G_OBJECT (label));
2683 * gtk_label_set_markup_with_mnemonic:
2684 * @label: a #GtkLabel
2685 * @str: a markup string (see
2686 * <link linkend="PangoMarkupFormat">Pango markup format</link>)
2688 * Parses @str which is marked up with the
2689 * <link linkend="PangoMarkupFormat">Pango text markup language</link>,
2690 * setting the label's text and attribute list based on the parse results.
2691 * If characters in @str are preceded by an underscore, they are underlined
2692 * indicating that they represent a keyboard accelerator called a mnemonic.
2694 * The mnemonic key can be used to activate another widget, chosen
2695 * automatically, or explicitly using gtk_label_set_mnemonic_widget().
2698 gtk_label_set_markup_with_mnemonic (GtkLabel *label,
2701 g_return_if_fail (GTK_IS_LABEL (label));
2703 g_object_freeze_notify (G_OBJECT (label));
2705 gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
2706 gtk_label_set_use_markup_internal (label, TRUE);
2707 gtk_label_set_use_underline_internal (label, TRUE);
2709 gtk_label_recalculate (label);
2711 g_object_thaw_notify (G_OBJECT (label));
2715 * gtk_label_get_text:
2716 * @label: a #GtkLabel
2718 * Fetches the text from a label widget, as displayed on the
2719 * screen. This does not include any embedded underlines
2720 * indicating mnemonics or Pango markup. (See gtk_label_get_label())
2722 * Return value: the text in the label widget. This is the internal
2723 * string used by the label, and must not be modified.
2725 G_CONST_RETURN gchar *
2726 gtk_label_get_text (GtkLabel *label)
2728 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
2730 return label->priv->text;
2733 static PangoAttrList *
2734 gtk_label_pattern_to_attrs (GtkLabel *label,
2735 const gchar *pattern)
2737 GtkLabelPrivate *priv = label->priv;
2739 const char *p = priv->text;
2740 const char *q = pattern;
2741 PangoAttrList *attrs;
2743 attrs = pango_attr_list_new ();
2747 while (*p && *q && *q != '_')
2749 p = g_utf8_next_char (p);
2753 while (*p && *q && *q == '_')
2755 p = g_utf8_next_char (p);
2761 PangoAttribute *attr = pango_attr_underline_new (PANGO_UNDERLINE_LOW);
2762 attr->start_index = start - priv->text;
2763 attr->end_index = p - priv->text;
2765 pango_attr_list_insert (attrs, attr);
2775 gtk_label_set_pattern_internal (GtkLabel *label,
2776 const gchar *pattern,
2777 gboolean is_mnemonic)
2779 GtkLabelPrivate *priv = label->priv;
2780 PangoAttrList *attrs;
2781 gboolean enable_mnemonics;
2782 gboolean auto_mnemonics;
2784 if (priv->pattern_set)
2789 g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
2790 "gtk-enable-mnemonics", &enable_mnemonics,
2791 "gtk-auto-mnemonics", &auto_mnemonics,
2794 if (enable_mnemonics && priv->mnemonics_visible && pattern &&
2796 (gtk_widget_is_sensitive (GTK_WIDGET (label)) &&
2797 (!priv->mnemonic_widget ||
2798 gtk_widget_is_sensitive (priv->mnemonic_widget)))))
2799 attrs = gtk_label_pattern_to_attrs (label, pattern);
2804 attrs = gtk_label_pattern_to_attrs (label, pattern);
2806 if (priv->effective_attrs)
2807 pango_attr_list_unref (priv->effective_attrs);
2808 priv->effective_attrs = attrs;
2812 * gtk_label_set_pattern:
2813 * @label: The #GtkLabel you want to set the pattern to.
2814 * @pattern: The pattern as described above.
2816 * The pattern of underlines you want under the existing text within the
2817 * #GtkLabel widget. For example if the current text of the label says
2818 * "FooBarBaz" passing a pattern of "___ ___" will underline
2819 * "Foo" and "Baz" but not "Bar".
2822 gtk_label_set_pattern (GtkLabel *label,
2823 const gchar *pattern)
2825 GtkLabelPrivate *priv = label->priv;
2827 g_return_if_fail (GTK_IS_LABEL (label));
2831 priv->pattern_set = FALSE;
2835 gtk_label_set_pattern_internal (label, pattern, FALSE);
2836 priv->pattern_set = TRUE;
2839 gtk_label_recalculate (label);
2841 gtk_label_clear_layout (label);
2842 gtk_widget_queue_resize (GTK_WIDGET (label));
2847 * gtk_label_set_justify:
2848 * @label: a #GtkLabel
2849 * @jtype: a #GtkJustification
2851 * Sets the alignment of the lines in the text of the label relative to
2852 * each other. %GTK_JUSTIFY_LEFT is the default value when the
2853 * widget is first created with gtk_label_new(). If you instead want
2854 * to set the alignment of the label as a whole, use
2855 * gtk_misc_set_alignment() instead. gtk_label_set_justify() has no
2856 * effect on labels containing only a single line.
2859 gtk_label_set_justify (GtkLabel *label,
2860 GtkJustification jtype)
2862 GtkLabelPrivate *priv;
2864 g_return_if_fail (GTK_IS_LABEL (label));
2865 g_return_if_fail (jtype >= GTK_JUSTIFY_LEFT && jtype <= GTK_JUSTIFY_FILL);
2869 if ((GtkJustification) priv->jtype != jtype)
2871 priv->jtype = jtype;
2873 /* No real need to be this drastic, but easier than duplicating the code */
2874 gtk_label_clear_layout (label);
2876 g_object_notify (G_OBJECT (label), "justify");
2877 gtk_widget_queue_resize (GTK_WIDGET (label));
2882 * gtk_label_get_justify:
2883 * @label: a #GtkLabel
2885 * Returns the justification of the label. See gtk_label_set_justify().
2887 * Return value: #GtkJustification
2890 gtk_label_get_justify (GtkLabel *label)
2892 g_return_val_if_fail (GTK_IS_LABEL (label), 0);
2894 return label->priv->jtype;
2898 * gtk_label_set_ellipsize:
2899 * @label: a #GtkLabel
2900 * @mode: a #PangoEllipsizeMode
2902 * Sets the mode used to ellipsize (add an ellipsis: "...") to the text
2903 * if there is not enough space to render the entire string.
2908 gtk_label_set_ellipsize (GtkLabel *label,
2909 PangoEllipsizeMode mode)
2911 GtkLabelPrivate *priv;
2913 g_return_if_fail (GTK_IS_LABEL (label));
2914 g_return_if_fail (mode >= PANGO_ELLIPSIZE_NONE && mode <= PANGO_ELLIPSIZE_END);
2918 if ((PangoEllipsizeMode) priv->ellipsize != mode)
2920 priv->ellipsize = mode;
2922 /* No real need to be this drastic, but easier than duplicating the code */
2923 gtk_label_clear_layout (label);
2925 g_object_notify (G_OBJECT (label), "ellipsize");
2926 gtk_widget_queue_resize (GTK_WIDGET (label));
2931 * gtk_label_get_ellipsize:
2932 * @label: a #GtkLabel
2934 * Returns the ellipsizing position of the label. See gtk_label_set_ellipsize().
2936 * Return value: #PangoEllipsizeMode
2941 gtk_label_get_ellipsize (GtkLabel *label)
2943 g_return_val_if_fail (GTK_IS_LABEL (label), PANGO_ELLIPSIZE_NONE);
2945 return label->priv->ellipsize;
2949 * gtk_label_set_width_chars:
2950 * @label: a #GtkLabel
2951 * @n_chars: the new desired width, in characters.
2953 * Sets the desired width in characters of @label to @n_chars.
2958 gtk_label_set_width_chars (GtkLabel *label,
2961 GtkLabelPrivate *priv;
2963 g_return_if_fail (GTK_IS_LABEL (label));
2967 if (priv->width_chars != n_chars)
2969 priv->width_chars = n_chars;
2970 g_object_notify (G_OBJECT (label), "width-chars");
2971 gtk_widget_queue_resize (GTK_WIDGET (label));
2976 * gtk_label_get_width_chars:
2977 * @label: a #GtkLabel
2979 * Retrieves the desired width of @label, in characters. See
2980 * gtk_label_set_width_chars().
2982 * Return value: the width of the label in characters.
2987 gtk_label_get_width_chars (GtkLabel *label)
2989 g_return_val_if_fail (GTK_IS_LABEL (label), -1);
2991 return label->priv->width_chars;
2995 * gtk_label_set_max_width_chars:
2996 * @label: a #GtkLabel
2997 * @n_chars: the new desired maximum width, in characters.
2999 * Sets the desired maximum width in characters of @label to @n_chars.
3004 gtk_label_set_max_width_chars (GtkLabel *label,
3007 GtkLabelPrivate *priv;
3009 g_return_if_fail (GTK_IS_LABEL (label));
3013 if (priv->max_width_chars != n_chars)
3015 priv->max_width_chars = n_chars;
3017 g_object_notify (G_OBJECT (label), "max-width-chars");
3018 gtk_widget_queue_resize (GTK_WIDGET (label));
3023 * gtk_label_get_max_width_chars:
3024 * @label: a #GtkLabel
3026 * Retrieves the desired maximum width of @label, in characters. See
3027 * gtk_label_set_width_chars().
3029 * Return value: the maximum width of the label in characters.
3034 gtk_label_get_max_width_chars (GtkLabel *label)
3036 g_return_val_if_fail (GTK_IS_LABEL (label), -1);
3038 return label->priv->max_width_chars;
3042 * gtk_label_set_line_wrap:
3043 * @label: a #GtkLabel
3044 * @wrap: the setting
3046 * Toggles line wrapping within the #GtkLabel widget. %TRUE makes it break
3047 * lines if text exceeds the widget's size. %FALSE lets the text get cut off
3048 * by the edge of the widget if it exceeds the widget size.
3050 * Note that setting line wrapping to %TRUE does not make the label
3051 * wrap at its parent container's width, because GTK+ widgets
3052 * conceptually can't make their requisition depend on the parent
3053 * container's size. For a label that wraps at a specific position,
3054 * set the label's width using gtk_widget_set_size_request().
3057 gtk_label_set_line_wrap (GtkLabel *label,
3060 GtkLabelPrivate *priv;
3062 g_return_if_fail (GTK_IS_LABEL (label));
3066 wrap = wrap != FALSE;
3068 if (priv->wrap != wrap)
3072 gtk_label_clear_layout (label);
3073 gtk_widget_queue_resize (GTK_WIDGET (label));
3074 g_object_notify (G_OBJECT (label), "wrap");
3079 * gtk_label_get_line_wrap:
3080 * @label: a #GtkLabel
3082 * Returns whether lines in the label are automatically wrapped.
3083 * See gtk_label_set_line_wrap().
3085 * Return value: %TRUE if the lines of the label are automatically wrapped.
3088 gtk_label_get_line_wrap (GtkLabel *label)
3090 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
3092 return label->priv->wrap;
3096 * gtk_label_set_line_wrap_mode:
3097 * @label: a #GtkLabel
3098 * @wrap_mode: the line wrapping mode
3100 * If line wrapping is on (see gtk_label_set_line_wrap()) this controls how
3101 * the line wrapping is done. The default is %PANGO_WRAP_WORD which means
3102 * wrap on word boundaries.
3107 gtk_label_set_line_wrap_mode (GtkLabel *label,
3108 PangoWrapMode wrap_mode)
3110 GtkLabelPrivate *priv;
3112 g_return_if_fail (GTK_IS_LABEL (label));
3116 if (priv->wrap_mode != wrap_mode)
3118 priv->wrap_mode = wrap_mode;
3119 g_object_notify (G_OBJECT (label), "wrap-mode");
3121 gtk_widget_queue_resize (GTK_WIDGET (label));
3126 * gtk_label_get_line_wrap_mode:
3127 * @label: a #GtkLabel
3129 * Returns line wrap mode used by the label. See gtk_label_set_line_wrap_mode().
3131 * Return value: %TRUE if the lines of the label are automatically wrapped.
3136 gtk_label_get_line_wrap_mode (GtkLabel *label)
3138 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
3140 return label->priv->wrap_mode;
3144 gtk_label_destroy (GtkWidget *widget)
3146 GtkLabel *label = GTK_LABEL (widget);
3148 gtk_label_set_mnemonic_widget (label, NULL);
3150 GTK_WIDGET_CLASS (gtk_label_parent_class)->destroy (widget);
3154 gtk_label_finalize (GObject *object)
3156 GtkLabel *label = GTK_LABEL (object);
3157 GtkLabelPrivate *priv = label->priv;
3159 g_free (priv->label);
3160 g_free (priv->text);
3163 g_object_unref (priv->layout);
3166 pango_attr_list_unref (priv->attrs);
3168 if (priv->effective_attrs)
3169 pango_attr_list_unref (priv->effective_attrs);
3171 gtk_label_clear_links (label);
3172 g_free (priv->select_info);
3174 G_OBJECT_CLASS (gtk_label_parent_class)->finalize (object);
3178 gtk_label_clear_layout (GtkLabel *label)
3180 GtkLabelPrivate *priv = label->priv;
3184 g_object_unref (priv->layout);
3185 priv->layout = NULL;
3187 //gtk_label_clear_links (label);
3191 static PangoFontMetrics *
3192 get_font_metrics (PangoContext *context, GtkWidget *widget)
3194 GtkStyleContext *style_context;
3195 PangoFontDescription *font;
3196 PangoFontMetrics *retval;
3198 style_context = gtk_widget_get_style_context (widget);
3199 gtk_style_context_get (style_context, 0, "font", &font, NULL);
3201 retval = pango_context_get_metrics (context,
3203 pango_context_get_language (context));
3206 pango_font_description_free (font);
3212 * gtk_label_get_measuring_layout:
3214 * @existing_layout: %NULL or an existing layout already in use.
3215 * @width: the width to measure with in pango units, or -1 for infinite
3216 * @height: the height to measure with in pango units, or -1 for infinite
3218 * Gets a layout that can be used for measuring sizes. The returned
3219 * layout will be identical to the label's layout except for the
3220 * layout's width, which will be set to @width. Do not modify the returned
3223 * Returns: a new reference to a pango layout
3225 static PangoLayout *
3226 gtk_label_get_measuring_layout (GtkLabel * label,
3227 PangoLayout *existing_layout,
3231 GtkLabelPrivate *priv = label->priv;
3232 PangoRectangle rect;
3235 if (existing_layout != NULL)
3237 if (existing_layout != priv->layout)
3239 pango_layout_set_width (existing_layout, width);
3240 pango_layout_set_height (existing_layout, height);
3241 return existing_layout;
3244 g_object_unref (existing_layout);
3247 gtk_label_ensure_layout (label);
3249 if (pango_layout_get_width (priv->layout) == width &&
3250 pango_layout_get_height (priv->layout) == height)
3252 g_object_ref (priv->layout);
3253 return priv->layout;
3256 /* We can use the label's own layout if we're not allocated a size yet,
3257 * because we don't need it to be properly setup at that point.
3258 * This way we can make use of caching upon the label's creation.
3260 if (gtk_widget_get_allocated_width (GTK_WIDGET (label)) <= 1)
3262 g_object_ref (priv->layout);
3263 pango_layout_set_width (priv->layout, width);
3264 pango_layout_set_height (priv->layout, height);
3265 return priv->layout;
3268 /* oftentimes we want to measure a width that is far wider than the current width,
3269 * even though the layout would not change if we made it wider. In that case, we
3270 * can just return the current layout, because for measuring purposes, it will be
3273 pango_layout_get_extents (priv->layout, NULL, &rect);
3274 if ((width == -1 || rect.width <= width) &&
3275 (height == -1 || rect.height <= height) &&
3276 !pango_layout_is_wrapped (priv->layout) &&
3277 !pango_layout_is_ellipsized (priv->layout))
3279 g_object_ref (priv->layout);
3280 return priv->layout;
3283 copy = pango_layout_copy (priv->layout);
3284 pango_layout_set_width (copy, width);
3285 pango_layout_set_height (copy, height);
3290 gtk_label_update_layout_width (GtkLabel *label)
3292 GtkLabelPrivate *priv = label->priv;
3293 GtkWidget *widget = GTK_WIDGET (label);
3295 g_assert (priv->layout);
3297 if (priv->ellipsize || priv->wrap)
3299 PangoRectangle logical;
3303 gtk_misc_get_padding (GTK_MISC (label), &xpad, &ypad);
3305 width = gtk_widget_get_allocated_width (GTK_WIDGET (label)) - xpad * 2;
3306 height = gtk_widget_get_allocated_height (GTK_WIDGET (label)) - ypad * 2;
3308 if (priv->have_transform)
3310 PangoContext *context = gtk_widget_get_pango_context (widget);
3311 const PangoMatrix *matrix = pango_context_get_matrix (context);
3312 const gdouble dx = matrix->xx; /* cos (M_PI * angle / 180) */
3313 const gdouble dy = matrix->xy; /* sin (M_PI * angle / 180) */
3315 pango_layout_set_width (priv->layout, -1);
3316 pango_layout_set_height (priv->layout, -1);
3317 pango_layout_get_pixel_extents (priv->layout, NULL, &logical);
3319 if (fabs (dy) < 0.01)
3321 if (logical.width > width)
3322 pango_layout_set_width (priv->layout, width * PANGO_SCALE);
3324 else if (fabs (dx) < 0.01)
3326 if (logical.width > height)
3327 pango_layout_set_width (priv->layout, height * PANGO_SCALE);
3331 gdouble x0, y0, x1, y1, length;
3336 y0 = dx ? x0 * dy / dx : G_MAXDOUBLE;
3337 vertical = fabs (y0) > height / 2;
3342 x0 = dy ? y0 * dx / dy : G_MAXDOUBLE;
3345 length = 2 * sqrt (x0 * x0 + y0 * y0);
3346 pango_layout_set_width (priv->layout, rint (length * PANGO_SCALE));
3347 pango_layout_get_pixel_size (priv->layout, NULL, &cy);
3354 y0 = height/2 + y1 - y0;
3359 x0 = width/2 + x1 - x0;
3363 length = length - sqrt (x0 * x0 + y0 * y0) * 2;
3364 pango_layout_set_width (priv->layout, rint (length * PANGO_SCALE));
3369 pango_layout_set_width (priv->layout, width * PANGO_SCALE);
3370 pango_layout_set_height (priv->layout, priv->ellipsize ? height * PANGO_SCALE : -1);
3375 pango_layout_set_width (priv->layout, -1);
3376 pango_layout_set_height (priv->layout, -1);
3381 gtk_label_ensure_layout (GtkLabel *label)
3383 GtkLabelPrivate *priv = label->priv;
3387 widget = GTK_WIDGET (label);
3389 rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
3393 PangoAlignment align = PANGO_ALIGN_LEFT; /* Quiet gcc */
3394 gdouble angle = gtk_label_get_angle (label);
3396 if (angle != 0.0 && !priv->select_info)
3398 PangoMatrix matrix = PANGO_MATRIX_INIT;
3400 /* We rotate the standard singleton PangoContext for the widget,
3401 * depending on the fact that it's meant pretty much exclusively
3404 pango_matrix_rotate (&matrix, angle);
3406 pango_context_set_matrix (gtk_widget_get_pango_context (widget), &matrix);
3408 priv->have_transform = TRUE;
3412 if (priv->have_transform)
3413 pango_context_set_matrix (gtk_widget_get_pango_context (widget), NULL);
3415 priv->have_transform = FALSE;
3418 priv->layout = gtk_widget_create_pango_layout (widget, priv->text);
3420 if (priv->effective_attrs)
3421 pango_layout_set_attributes (priv->layout, priv->effective_attrs);
3423 gtk_label_rescan_links (label);
3425 switch (priv->jtype)
3427 case GTK_JUSTIFY_LEFT:
3428 align = rtl ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_LEFT;
3430 case GTK_JUSTIFY_RIGHT:
3431 align = rtl ? PANGO_ALIGN_LEFT : PANGO_ALIGN_RIGHT;
3433 case GTK_JUSTIFY_CENTER:
3434 align = PANGO_ALIGN_CENTER;
3436 case GTK_JUSTIFY_FILL:
3437 align = rtl ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_LEFT;
3438 pango_layout_set_justify (priv->layout, TRUE);
3441 g_assert_not_reached();
3444 pango_layout_set_alignment (priv->layout, align);
3445 pango_layout_set_ellipsize (priv->layout, priv->ellipsize);
3446 pango_layout_set_wrap (priv->layout, priv->wrap_mode);
3447 pango_layout_set_single_paragraph_mode (priv->layout, priv->single_line_mode);
3449 gtk_label_update_layout_width (label);
3454 get_single_line_height (GtkWidget *widget,
3455 PangoLayout *layout)
3457 PangoContext *context;
3458 PangoFontMetrics *metrics;
3459 gint ascent, descent;
3461 context = pango_layout_get_context (layout);
3462 metrics = get_font_metrics (context, widget);
3463 ascent = pango_font_metrics_get_ascent (metrics);
3464 descent = pango_font_metrics_get_descent (metrics);
3465 pango_font_metrics_unref (metrics);
3467 return ascent + descent;
3470 static GtkSizeRequestMode
3471 gtk_label_get_request_mode (GtkWidget *widget)
3473 GtkLabel *label = GTK_LABEL (widget);
3474 gdouble angle = gtk_label_get_angle (label);
3476 if (label->priv->wrap)
3477 return (angle == 90 || angle == 270) ?
3478 GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT :
3479 GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
3481 return GTK_SIZE_REQUEST_CONSTANT_SIZE;
3485 get_size_for_allocation (GtkLabel *label,
3486 GtkOrientation orientation,
3491 GtkLabelPrivate *priv = label->priv;
3492 PangoLayout *layout;
3495 layout = gtk_label_get_measuring_layout (label, NULL, allocation * PANGO_SCALE, -1);
3497 pango_layout_get_pixel_size (layout, NULL, &text_height);
3500 *minimum_size = text_height;
3504 if (priv->ellipsize && priv->wrap)
3506 layout = gtk_label_get_measuring_layout (label, layout, allocation * PANGO_SCALE, G_MAXINT);
3507 pango_layout_get_pixel_size (layout, NULL, &text_height);
3510 *natural_size = text_height;
3513 g_object_unref (layout);
3517 get_char_pixels (GtkWidget *label,
3518 PangoLayout *layout)
3520 PangoContext *context;
3521 PangoFontMetrics *metrics;
3522 gint char_width, digit_width;
3524 context = pango_layout_get_context (layout);
3525 metrics = get_font_metrics (context, GTK_WIDGET (label));
3526 char_width = pango_font_metrics_get_approximate_char_width (metrics);
3527 digit_width = pango_font_metrics_get_approximate_digit_width (metrics);
3528 pango_font_metrics_unref (metrics);
3530 return MAX (char_width, digit_width);;
3534 gtk_label_get_preferred_layout_size (GtkLabel *label,
3535 PangoRectangle *required,
3536 PangoRectangle *natural)
3538 GtkLabelPrivate *priv = label->priv;
3539 PangoLayout *layout;
3541 /* "width-chars" Hard-coded minimum width:
3542 * - minimum size should be MAX (width-chars, strlen ("..."));
3543 * - natural size should be MAX (width-chars, strlen (priv->text));
3545 * "max-width-chars" User specified maximum size requisition
3546 * - minimum size should be MAX (width-chars, 0)
3547 * - natural size should be MIN (max-width-chars, strlen (priv->text))
3549 * For ellipsizing labels; if max-width-chars is specified: either it is used as
3550 * a minimum size or the label text as a minimum size (natural size still overflows).
3552 * For wrapping labels; A reasonable minimum size is useful to naturally layout
3553 * interfaces automatically. In this case if no "width-chars" is specified, the minimum
3554 * width will default to the wrap guess that gtk_label_ensure_layout() does.
3557 /* Start off with the pixel extents of an as-wide-as-possible layout */
3558 layout = gtk_label_get_measuring_layout (label, NULL, -1, -1);
3560 pango_layout_get_extents (layout, NULL, natural);
3561 natural->x = natural->y = 0;
3564 natural->height = get_single_line_height (GTK_WIDGET (label), layout);
3566 if (priv->ellipsize || priv->wrap)
3568 /* a layout with width 0 will be as small as humanly possible */
3569 layout = gtk_label_get_measuring_layout (label, layout, 0, -1);
3571 pango_layout_get_extents (layout, NULL, required);
3573 /* can happen when Pango decides to ellipsize text */
3574 if (required->width > natural->width)
3575 required->width = natural->width;
3577 required->x = required->y = 0;
3578 required->height = natural->height;
3582 *required = *natural;
3585 if (priv->width_chars > -1 || priv->max_width_chars > -1)
3589 char_pixels = get_char_pixels (GTK_WIDGET (label), layout);
3591 if (priv->width_chars > -1)
3592 required->width = MAX (required->width, char_pixels * priv->width_chars);
3594 if (priv->max_width_chars > -1)
3595 natural->width = MIN (natural->width, priv->max_width_chars * char_pixels);
3596 natural->width = MAX (natural->width, required->width);
3599 g_object_unref (layout);
3603 gtk_label_get_preferred_size (GtkWidget *widget,
3604 GtkOrientation orientation,
3608 GtkLabel *label = GTK_LABEL (widget);
3609 GtkLabelPrivate *priv = label->priv;
3610 PangoRectangle required_rect;
3611 PangoRectangle natural_rect;
3614 gtk_label_get_preferred_layout_size (label, &required_rect, &natural_rect);
3616 /* Now that we have minimum and natural sizes in pango extents, apply a possible transform */
3617 if (priv->have_transform)
3620 PangoContext *context;
3621 const PangoMatrix *matrix;
3623 copy = pango_layout_copy (priv->layout);
3624 context = pango_layout_get_context (copy);
3625 matrix = pango_context_get_matrix (context);
3627 pango_layout_set_width (copy, -1);
3628 pango_layout_set_ellipsize (copy, PANGO_ELLIPSIZE_NONE);
3630 pango_layout_get_extents (copy, NULL, &natural_rect);
3631 g_object_unref (copy);
3633 pango_matrix_transform_rectangle (matrix, &required_rect);
3634 pango_matrix_transform_rectangle (matrix, &natural_rect);
3636 /* Bump the natural size in case of ellipsize to ensure pango has
3637 * enough space in the angles (note, we could alternatively set the
3638 * layout to not ellipsize when we know we have been allocated our
3639 * full natural size, or it may be that pango needs a fix here).
3641 if (priv->ellipsize && priv->angle != 0 && priv->angle != 90 &&
3642 priv->angle != 180 && priv->angle != 270 && priv->angle != 360)
3644 /* For some reason we only need this at about 110 degrees, and only
3645 * when gaining in height
3647 natural_rect.height += ROTATION_ELLIPSIZE_PADDING * 2 * PANGO_SCALE;
3648 natural_rect.width += ROTATION_ELLIPSIZE_PADDING * 2 * PANGO_SCALE;
3652 required_rect.width = PANGO_PIXELS_CEIL (required_rect.width);
3653 required_rect.height = PANGO_PIXELS_CEIL (required_rect.height);
3655 natural_rect.width = PANGO_PIXELS_CEIL (natural_rect.width);
3656 natural_rect.height = PANGO_PIXELS_CEIL (natural_rect.height);
3658 gtk_misc_get_padding (GTK_MISC (label), &xpad, &ypad);
3660 if (orientation == GTK_ORIENTATION_HORIZONTAL)
3662 /* Note, we cant use get_size_for_allocation() when rotating
3663 * ellipsized labels.
3665 if (!(priv->ellipsize && priv->have_transform) &&
3666 (priv->angle == 90 || priv->angle == 270))
3668 /* Doing a h4w request on a rotated label here, return the
3669 * required width for the minimum height.
3671 get_size_for_allocation (label,
3672 GTK_ORIENTATION_VERTICAL,
3673 required_rect.height,
3674 minimum_size, natural_size);
3679 /* Normal desired width */
3680 *minimum_size = required_rect.width;
3681 *natural_size = natural_rect.width;
3684 *minimum_size += xpad * 2;
3685 *natural_size += xpad * 2;
3687 else /* GTK_ORIENTATION_VERTICAL */
3689 /* Note, we cant use get_size_for_allocation() when rotating
3690 * ellipsized labels.
3692 if (!(priv->ellipsize && priv->have_transform) &&
3693 (priv->angle == 0 || priv->angle == 180 || priv->angle == 360))
3695 /* Doing a w4h request on a label here, return the required
3696 * height for the minimum width.
3698 get_size_for_allocation (label,
3699 GTK_ORIENTATION_HORIZONTAL,
3700 required_rect.width,
3701 minimum_size, natural_size);
3705 /* A vertically rotated label does w4h, so return the base
3706 * desired height (text length)
3708 *minimum_size = required_rect.height;
3709 *natural_size = natural_rect.height;
3712 *minimum_size += ypad * 2;
3713 *natural_size += ypad * 2;
3719 gtk_label_get_preferred_width (GtkWidget *widget,
3723 gtk_label_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum_size, natural_size);
3727 gtk_label_get_preferred_height (GtkWidget *widget,
3731 gtk_label_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, minimum_size, natural_size);
3735 gtk_label_get_preferred_width_for_height (GtkWidget *widget,
3737 gint *minimum_width,
3738 gint *natural_width)
3740 GtkLabel *label = GTK_LABEL (widget);
3741 GtkLabelPrivate *priv = label->priv;
3743 if (priv->wrap && (priv->angle == 90 || priv->angle == 270))
3747 gtk_misc_get_padding (GTK_MISC (label), &xpad, &ypad);
3750 gtk_label_clear_layout (label);
3752 get_size_for_allocation (label, GTK_ORIENTATION_VERTICAL,
3753 MAX (1, height - (ypad * 2)),
3754 minimum_width, natural_width);
3757 *minimum_width += xpad * 2;
3760 *natural_width += xpad * 2;
3763 GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, minimum_width, natural_width);
3767 gtk_label_get_preferred_height_for_width (GtkWidget *widget,
3769 gint *minimum_height,
3770 gint *natural_height)
3772 GtkLabel *label = GTK_LABEL (widget);
3773 GtkLabelPrivate *priv = label->priv;
3775 if (priv->wrap && (priv->angle == 0 || priv->angle == 180 || priv->angle == 360))
3779 gtk_misc_get_padding (GTK_MISC (label), &xpad, &ypad);
3782 gtk_label_clear_layout (label);
3784 get_size_for_allocation (label, GTK_ORIENTATION_HORIZONTAL,
3785 MAX (1, width - xpad * 2),
3786 minimum_height, natural_height);
3789 *minimum_height += ypad * 2;
3792 *natural_height += ypad * 2;
3795 GTK_WIDGET_GET_CLASS (widget)->get_preferred_height (widget, minimum_height, natural_height);
3799 gtk_label_size_allocate (GtkWidget *widget,
3800 GtkAllocation *allocation)
3802 GtkLabel *label = GTK_LABEL (widget);
3803 GtkLabelPrivate *priv = label->priv;
3805 GTK_WIDGET_CLASS (gtk_label_parent_class)->size_allocate (widget, allocation);
3808 gtk_label_update_layout_width (label);
3810 if (priv->select_info && priv->select_info->window)
3812 gdk_window_move_resize (priv->select_info->window,
3816 allocation->height);
3821 gtk_label_update_cursor (GtkLabel *label)
3823 GtkLabelPrivate *priv = label->priv;
3826 if (!priv->select_info)
3829 widget = GTK_WIDGET (label);
3831 if (gtk_widget_get_realized (widget))
3833 GdkDisplay *display;
3836 if (gtk_widget_is_sensitive (widget))
3838 display = gtk_widget_get_display (widget);
3840 if (priv->select_info->active_link)
3841 cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
3842 else if (priv->select_info->selectable)
3843 cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
3850 gdk_window_set_cursor (priv->select_info->window, cursor);
3853 g_object_unref (cursor);
3858 gtk_label_state_changed (GtkWidget *widget,
3859 GtkStateType prev_state)
3861 GtkLabel *label = GTK_LABEL (widget);
3862 GtkLabelPrivate *priv = label->priv;
3864 if (priv->select_info)
3866 if (!gtk_widget_is_sensitive (widget))
3867 gtk_label_select_region (label, 0, 0);
3869 gtk_label_update_cursor (label);
3872 if (GTK_WIDGET_CLASS (gtk_label_parent_class)->state_changed)
3873 GTK_WIDGET_CLASS (gtk_label_parent_class)->state_changed (widget, prev_state);
3877 gtk_label_style_updated (GtkWidget *widget)
3879 GtkLabel *label = GTK_LABEL (widget);
3881 GTK_WIDGET_CLASS (gtk_label_parent_class)->style_updated (widget);
3883 /* We have to clear the layout, fonts etc. may have changed */
3884 gtk_label_clear_layout (label);
3888 gtk_label_direction_changed (GtkWidget *widget,
3889 GtkTextDirection previous_dir)
3891 GtkLabel *label = GTK_LABEL (widget);
3892 GtkLabelPrivate *priv = label->priv;
3895 pango_layout_context_changed (priv->layout);
3897 GTK_WIDGET_CLASS (gtk_label_parent_class)->direction_changed (widget, previous_dir);
3901 get_layout_location (GtkLabel *label,
3905 GtkAllocation allocation;
3908 GtkLabelPrivate *priv;
3909 gint req_width, x, y;
3912 gfloat xalign, yalign;
3913 PangoRectangle logical;
3915 misc = GTK_MISC (label);
3916 widget = GTK_WIDGET (label);
3919 gtk_misc_get_alignment (misc, &xalign, &yalign);
3920 gtk_misc_get_padding (misc, &xpad, &ypad);
3922 if (gtk_widget_get_direction (widget) != GTK_TEXT_DIR_LTR)
3923 xalign = 1.0 - xalign;
3925 pango_layout_get_extents (priv->layout, NULL, &logical);
3927 if (priv->have_transform)
3929 PangoContext *context = gtk_widget_get_pango_context (widget);
3930 const PangoMatrix *matrix = pango_context_get_matrix (context);
3931 pango_matrix_transform_rectangle (matrix, &logical);
3934 pango_extents_to_pixels (&logical, NULL);
3936 req_width = logical.width;
3937 req_height = logical.height;
3939 req_width += 2 * xpad;
3940 req_height += 2 * ypad;
3942 gtk_widget_get_allocation (widget, &allocation);
3944 x = floor (allocation.x + xpad + xalign * (allocation.width - req_width));
3946 if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
3947 x = MAX (x, allocation.x + xpad);
3949 x = MIN (x, allocation.x + allocation.width - xpad);
3952 /* bgo#315462 - For single-line labels, *do* align the requisition with
3953 * respect to the allocation, even if we are under-allocated. For multi-line
3954 * labels, always show the top of the text when they are under-allocated. The
3955 * rationale is this:
3957 * - Single-line labels appear in GtkButtons, and it is very easy to get them
3958 * to be smaller than their requisition. The button may clip the label, but
3959 * the label will still be able to show most of itself and the focus
3960 * rectangle. Also, it is fairly easy to read a single line of clipped text.
3962 * - Multi-line labels should not be clipped to showing "something in the
3963 * middle". You want to read the first line, at least, to get some context.
3965 if (pango_layout_get_line_count (priv->layout) == 1)
3966 y = floor (allocation.y + ypad + (allocation.height - req_height) * yalign);
3968 y = floor (allocation.y + ypad + MAX ((allocation.height - req_height) * yalign, 0));
3978 draw_insertion_cursor (GtkLabel *label,
3980 GdkRectangle *cursor_location,
3981 gboolean is_primary,
3982 PangoDirection direction,
3983 gboolean draw_arrow)
3985 GtkWidget *widget = GTK_WIDGET (label);
3986 GtkTextDirection text_dir;
3988 if (direction == PANGO_DIRECTION_LTR)
3989 text_dir = GTK_TEXT_DIR_LTR;
3991 text_dir = GTK_TEXT_DIR_RTL;
3993 gtk_draw_insertion_cursor (widget, cr, cursor_location,
3994 is_primary, text_dir, draw_arrow);
3997 static PangoDirection
3998 get_cursor_direction (GtkLabel *label)
4000 GtkLabelPrivate *priv = label->priv;
4003 g_assert (priv->select_info);
4005 gtk_label_ensure_layout (label);
4007 for (l = pango_layout_get_lines_readonly (priv->layout); l; l = l->next)
4009 PangoLayoutLine *line = l->data;
4011 /* If priv->select_info->selection_end is at the very end of
4012 * the line, we don't know if the cursor is on this line or
4013 * the next without looking ahead at the next line. (End
4014 * of paragraph is different from line break.) But it's
4015 * definitely in this paragraph, which is good enough
4016 * to figure out the resolved direction.
4018 if (line->start_index + line->length >= priv->select_info->selection_end)
4019 return line->resolved_dir;
4022 return PANGO_DIRECTION_LTR;
4026 gtk_label_draw_cursor (GtkLabel *label, cairo_t *cr, gint xoffset, gint yoffset)
4028 GtkLabelPrivate *priv = label->priv;
4031 if (priv->select_info == NULL)
4034 widget = GTK_WIDGET (label);
4036 if (gtk_widget_is_drawable (widget))
4038 PangoDirection keymap_direction;
4039 PangoDirection cursor_direction;
4040 PangoRectangle strong_pos, weak_pos;
4041 gboolean split_cursor;
4042 PangoRectangle *cursor1 = NULL;
4043 PangoRectangle *cursor2 = NULL;
4044 GdkRectangle cursor_location;
4045 PangoDirection dir1 = PANGO_DIRECTION_NEUTRAL;
4046 PangoDirection dir2 = PANGO_DIRECTION_NEUTRAL;
4048 keymap_direction = gdk_keymap_get_direction (gdk_keymap_get_for_display (gtk_widget_get_display (widget)));
4049 cursor_direction = get_cursor_direction (label);
4051 gtk_label_ensure_layout (label);
4053 pango_layout_get_cursor_pos (priv->layout, priv->select_info->selection_end,
4054 &strong_pos, &weak_pos);
4056 g_object_get (gtk_widget_get_settings (widget),
4057 "gtk-split-cursor", &split_cursor,
4060 dir1 = cursor_direction;
4064 cursor1 = &strong_pos;
4066 if (strong_pos.x != weak_pos.x ||
4067 strong_pos.y != weak_pos.y)
4069 dir2 = (cursor_direction == PANGO_DIRECTION_LTR) ? PANGO_DIRECTION_RTL : PANGO_DIRECTION_LTR;
4070 cursor2 = &weak_pos;
4075 if (keymap_direction == cursor_direction)
4076 cursor1 = &strong_pos;
4078 cursor1 = &weak_pos;
4081 cursor_location.x = xoffset + PANGO_PIXELS (cursor1->x);
4082 cursor_location.y = yoffset + PANGO_PIXELS (cursor1->y);
4083 cursor_location.width = 0;
4084 cursor_location.height = PANGO_PIXELS (cursor1->height);
4086 draw_insertion_cursor (label, cr,
4087 &cursor_location, TRUE, dir1,
4088 dir2 != PANGO_DIRECTION_NEUTRAL);
4090 if (dir2 != PANGO_DIRECTION_NEUTRAL)
4092 cursor_location.x = xoffset + PANGO_PIXELS (cursor2->x);
4093 cursor_location.y = yoffset + PANGO_PIXELS (cursor2->y);
4094 cursor_location.width = 0;
4095 cursor_location.height = PANGO_PIXELS (cursor2->height);
4097 draw_insertion_cursor (label, cr,
4098 &cursor_location, FALSE, dir2,
4104 static GtkLabelLink *
4105 gtk_label_get_focus_link (GtkLabel *label)
4107 GtkLabelPrivate *priv = label->priv;
4108 GtkLabelSelectionInfo *info = priv->select_info;
4114 if (info->selection_anchor != info->selection_end)
4117 for (l = info->links; l; l = l->next)
4119 GtkLabelLink *link = l->data;
4120 if (link->start <= info->selection_anchor &&
4121 info->selection_anchor <= link->end)
4129 gtk_label_draw (GtkWidget *widget,
4132 GtkLabel *label = GTK_LABEL (widget);
4133 GtkLabelPrivate *priv = label->priv;
4134 GtkLabelSelectionInfo *info = priv->select_info;
4135 GtkAllocation allocation;
4136 GtkStyleContext *context;
4137 GtkStateFlags state;
4140 gtk_label_ensure_layout (label);
4142 if (priv->text && (*priv->text != '\0'))
4144 GdkRGBA *bg_color, *fg_color;
4146 get_layout_location (label, &x, &y);
4148 context = gtk_widget_get_style_context (widget);
4149 gtk_widget_get_allocation (widget, &allocation);
4151 cairo_translate (cr, -allocation.x, -allocation.y);
4153 state = gtk_widget_get_state_flags (widget);
4154 gtk_style_context_set_state (context, state);
4156 gtk_render_layout (context, cr,
4161 (info->selection_anchor != info->selection_end))
4164 cairo_region_t *clip;
4166 range[0] = info->selection_anchor;
4167 range[1] = info->selection_end;
4169 if (range[0] > range[1])
4171 gint tmp = range[0];
4172 range[0] = range[1];
4176 clip = gdk_pango_layout_get_clip_region (priv->layout,
4181 /* FIXME should use gtk_paint, but it can't use a clip region */
4184 gdk_cairo_region (cr, clip);
4187 state = GTK_STATE_FLAG_SELECTED;
4189 if (gtk_widget_has_focus (widget))
4190 state |= GTK_STATE_FLAG_FOCUSED;
4192 gtk_style_context_get (context, state,
4193 "background-color", &bg_color,
4197 gdk_cairo_set_source_rgba (cr, bg_color);
4200 gdk_cairo_set_source_rgba (cr, fg_color);
4201 cairo_move_to (cr, x, y);
4202 _gtk_pango_fill_layout (cr, priv->layout);
4205 cairo_region_destroy (clip);
4207 gdk_rgba_free (bg_color);
4208 gdk_rgba_free (fg_color);
4212 GtkLabelLink *focus_link;
4213 GtkLabelLink *active_link;
4215 cairo_region_t *clip;
4217 GdkColor *text_color;
4218 GdkColor *link_color;
4219 GdkColor *visited_link_color;
4221 if (info->selectable && gtk_widget_has_focus (widget))
4222 gtk_label_draw_cursor (label, cr, x, y);
4224 focus_link = gtk_label_get_focus_link (label);
4225 active_link = info->active_link;
4232 range[0] = active_link->start;
4233 range[1] = active_link->end;
4237 clip = gdk_pango_layout_get_clip_region (priv->layout,
4241 gdk_cairo_region (cr, clip);
4243 cairo_region_destroy (clip);
4245 gtk_label_get_link_colors (widget, &link_color, &visited_link_color);
4246 if (active_link->visited)
4247 text_color = visited_link_color;
4249 text_color = link_color;
4251 if (info->link_clicked)
4252 state = GTK_STATE_FLAG_ACTIVE;
4254 state = GTK_STATE_FLAG_PRELIGHT;
4256 gtk_style_context_get (context, state,
4257 "background-color", &bg_color,
4260 gdk_cairo_set_source_rgba (cr, bg_color);
4263 gdk_cairo_set_source_color (cr, text_color);
4264 cairo_move_to (cr, x, y);
4265 _gtk_pango_fill_layout (cr, priv->layout);
4267 gdk_color_free (link_color);
4268 gdk_color_free (visited_link_color);
4269 gdk_rgba_free (bg_color);
4274 if (focus_link && gtk_widget_has_focus (widget))
4276 range[0] = focus_link->start;
4277 range[1] = focus_link->end;
4279 clip = gdk_pango_layout_get_clip_region (priv->layout,
4283 cairo_region_get_extents (clip, &rect);
4285 state = gtk_widget_get_state_flags (widget);
4286 gtk_style_context_set_state (context, state);
4288 gtk_render_focus (context, cr,
4290 rect.width, rect.height);
4292 cairo_region_destroy (clip);
4301 separate_uline_pattern (const gchar *str,
4306 gboolean underscore;
4309 gchar *pattern_dest;
4311 *accel_key = GDK_KEY_VoidSymbol;
4312 *new_str = g_new (gchar, strlen (str) + 1);
4313 *pattern = g_new (gchar, g_utf8_strlen (str, -1) + 1);
4319 pattern_dest = *pattern;
4324 const gchar *next_src;
4326 c = g_utf8_get_char (src);
4327 if (c == (gunichar)-1)
4329 g_warning ("Invalid input string");
4335 next_src = g_utf8_next_char (src);
4340 *pattern_dest++ = ' ';
4343 *pattern_dest++ = '_';
4344 if (*accel_key == GDK_KEY_VoidSymbol)
4345 *accel_key = gdk_keyval_to_lower (gdk_unicode_to_keyval (c));
4348 while (src < next_src)
4362 while (src < next_src)
4365 *pattern_dest++ = ' ';
4377 gtk_label_set_uline_text_internal (GtkLabel *label,
4380 GtkLabelPrivate *priv = label->priv;
4381 guint accel_key = GDK_KEY_VoidSymbol;
4385 g_return_if_fail (GTK_IS_LABEL (label));
4386 g_return_if_fail (str != NULL);
4388 /* Split text into the base text and a separate pattern
4391 if (!separate_uline_pattern (str, &accel_key, &new_str, &pattern))
4394 gtk_label_set_text_internal (label, new_str);
4395 gtk_label_set_pattern_internal (label, pattern, TRUE);
4396 priv->mnemonic_keyval = accel_key;
4402 * gtk_label_set_text_with_mnemonic:
4403 * @label: a #GtkLabel
4406 * Sets the label's text from the string @str.
4407 * If characters in @str are preceded by an underscore, they are underlined
4408 * indicating that they represent a keyboard accelerator called a mnemonic.
4409 * The mnemonic key can be used to activate another widget, chosen
4410 * automatically, or explicitly using gtk_label_set_mnemonic_widget().
4413 gtk_label_set_text_with_mnemonic (GtkLabel *label,
4416 g_return_if_fail (GTK_IS_LABEL (label));
4417 g_return_if_fail (str != NULL);
4419 g_object_freeze_notify (G_OBJECT (label));
4421 gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
4422 gtk_label_set_use_markup_internal (label, FALSE);
4423 gtk_label_set_use_underline_internal (label, TRUE);
4425 gtk_label_recalculate (label);
4427 g_object_thaw_notify (G_OBJECT (label));
4431 gtk_label_realize (GtkWidget *widget)
4433 GtkLabel *label = GTK_LABEL (widget);
4434 GtkLabelPrivate *priv = label->priv;
4436 GTK_WIDGET_CLASS (gtk_label_parent_class)->realize (widget);
4438 if (priv->select_info)
4439 gtk_label_create_window (label);
4443 gtk_label_unrealize (GtkWidget *widget)
4445 GtkLabel *label = GTK_LABEL (widget);
4446 GtkLabelPrivate *priv = label->priv;
4448 if (priv->select_info)
4449 gtk_label_destroy_window (label);
4451 GTK_WIDGET_CLASS (gtk_label_parent_class)->unrealize (widget);
4455 gtk_label_map (GtkWidget *widget)
4457 GtkLabel *label = GTK_LABEL (widget);
4458 GtkLabelPrivate *priv = label->priv;
4460 GTK_WIDGET_CLASS (gtk_label_parent_class)->map (widget);
4462 if (priv->select_info)
4463 gdk_window_show (priv->select_info->window);
4467 gtk_label_unmap (GtkWidget *widget)
4469 GtkLabel *label = GTK_LABEL (widget);
4470 GtkLabelPrivate *priv = label->priv;
4472 if (priv->select_info)
4473 gdk_window_hide (priv->select_info->window);
4475 GTK_WIDGET_CLASS (gtk_label_parent_class)->unmap (widget);
4479 window_to_layout_coords (GtkLabel *label,
4483 GtkAllocation allocation;
4487 widget = GTK_WIDGET (label);
4489 /* get layout location in widget->window coords */
4490 get_layout_location (label, &lx, &ly);
4492 gtk_widget_get_allocation (widget, &allocation);
4496 *x += allocation.x; /* go to widget->window */
4497 *x -= lx; /* go to layout */
4502 *y += allocation.y; /* go to widget->window */
4503 *y -= ly; /* go to layout */
4509 layout_to_window_coords (GtkLabel *label,
4516 widget = GTK_WIDGET (label);
4518 /* get layout location in widget->window coords */
4519 get_layout_location (label, &lx, &ly);
4523 *x += lx; /* go to widget->window */
4524 *x -= widget->allocation.x; /* go to selection window */
4529 *y += ly; /* go to widget->window */
4530 *y -= widget->allocation.y; /* go to selection window */
4536 get_layout_index (GtkLabel *label,
4541 GtkLabelPrivate *priv = label->priv;
4543 const gchar *cluster;
4544 const gchar *cluster_end;
4549 gtk_label_ensure_layout (label);
4551 window_to_layout_coords (label, &x, &y);
4556 inside = pango_layout_xy_to_index (priv->layout,
4560 cluster = priv->text + *index;
4561 cluster_end = cluster;
4564 cluster_end = g_utf8_next_char (cluster_end);
4568 *index += (cluster_end - cluster);
4574 gtk_label_select_word (GtkLabel *label)
4576 GtkLabelPrivate *priv = label->priv;
4579 gint start_index = gtk_label_move_backward_word (label, priv->select_info->selection_end);
4580 gint end_index = gtk_label_move_forward_word (label, priv->select_info->selection_end);
4582 min = MIN (priv->select_info->selection_anchor,
4583 priv->select_info->selection_end);
4584 max = MAX (priv->select_info->selection_anchor,
4585 priv->select_info->selection_end);
4587 min = MIN (min, start_index);
4588 max = MAX (max, end_index);
4590 gtk_label_select_region_index (label, min, max);
4594 gtk_label_grab_focus (GtkWidget *widget)
4596 GtkLabel *label = GTK_LABEL (widget);
4597 GtkLabelPrivate *priv = label->priv;
4598 gboolean select_on_focus;
4601 if (priv->select_info == NULL)
4604 GTK_WIDGET_CLASS (gtk_label_parent_class)->grab_focus (widget);
4606 if (priv->select_info->selectable)
4608 g_object_get (gtk_widget_get_settings (widget),
4609 "gtk-label-select-on-focus",
4613 if (select_on_focus && !priv->in_click)
4614 gtk_label_select_region (label, 0, -1);
4618 if (priv->select_info->links && !priv->in_click)
4620 link = priv->select_info->links->data;
4621 priv->select_info->selection_anchor = link->start;
4622 priv->select_info->selection_end = link->start;
4628 gtk_label_focus (GtkWidget *widget,
4629 GtkDirectionType direction)
4631 GtkLabel *label = GTK_LABEL (widget);
4632 GtkLabelPrivate *priv = label->priv;
4633 GtkLabelSelectionInfo *info = priv->select_info;
4634 GtkLabelLink *focus_link;
4637 if (!gtk_widget_is_focus (widget))
4639 gtk_widget_grab_focus (widget);
4642 focus_link = gtk_label_get_focus_link (label);
4643 if (focus_link && direction == GTK_DIR_TAB_BACKWARD)
4645 l = g_list_last (info->links);
4646 focus_link = l->data;
4647 info->selection_anchor = focus_link->start;
4648 info->selection_end = focus_link->start;
4658 if (info->selectable)
4662 if (info->selection_anchor != info->selection_end)
4665 index = info->selection_anchor;
4667 if (direction == GTK_DIR_TAB_FORWARD)
4668 for (l = info->links; l; l = l->next)
4670 GtkLabelLink *link = l->data;
4672 if (link->start > index)
4674 gtk_label_select_region_index (label, link->start, link->start);
4678 else if (direction == GTK_DIR_TAB_BACKWARD)
4679 for (l = g_list_last (info->links); l; l = l->prev)
4681 GtkLabelLink *link = l->data;
4683 if (link->end < index)
4685 gtk_label_select_region_index (label, link->start, link->start);
4694 focus_link = gtk_label_get_focus_link (label);
4697 case GTK_DIR_TAB_FORWARD:
4700 l = g_list_find (info->links, focus_link);
4707 case GTK_DIR_TAB_BACKWARD:
4710 l = g_list_find (info->links, focus_link);
4714 l = g_list_last (info->links);
4723 focus_link = l->data;
4724 info->selection_anchor = focus_link->start;
4725 info->selection_end = focus_link->start;
4726 gtk_widget_queue_draw (widget);
4738 gtk_label_button_press (GtkWidget *widget,
4739 GdkEventButton *event)
4741 GtkLabel *label = GTK_LABEL (widget);
4742 GtkLabelPrivate *priv = label->priv;
4743 GtkLabelSelectionInfo *info = priv->select_info;
4750 if (info->active_link)
4752 if (event->button == 1)
4754 info->link_clicked = 1;
4755 gtk_widget_queue_draw (widget);
4757 else if (event->button == 3 && event->type == GDK_BUTTON_PRESS)
4759 info->link_clicked = 1;
4760 gtk_label_do_popup (label, event);
4765 if (!info->selectable)
4768 info->in_drag = FALSE;
4769 info->select_words = FALSE;
4771 if (event->button == 1)
4773 if (!gtk_widget_has_focus (widget))
4775 priv->in_click = TRUE;
4776 gtk_widget_grab_focus (widget);
4777 priv->in_click = FALSE;
4780 if (event->type == GDK_3BUTTON_PRESS)
4782 gtk_label_select_region_index (label, 0, strlen (priv->text));
4786 if (event->type == GDK_2BUTTON_PRESS)
4788 info->select_words = TRUE;
4789 gtk_label_select_word (label);
4793 get_layout_index (label, event->x, event->y, &index);
4795 min = MIN (info->selection_anchor, info->selection_end);
4796 max = MAX (info->selection_anchor, info->selection_end);
4798 if ((info->selection_anchor != info->selection_end) &&
4799 (event->state & GDK_SHIFT_MASK))
4801 /* extend (same as motion) */
4802 min = MIN (min, index);
4803 max = MAX (max, index);
4805 /* ensure the anchor is opposite index */
4813 gtk_label_select_region_index (label, min, max);
4817 if (event->type == GDK_3BUTTON_PRESS)
4818 gtk_label_select_region_index (label, 0, strlen (priv->text));
4819 else if (event->type == GDK_2BUTTON_PRESS)
4820 gtk_label_select_word (label);
4821 else if (min < max && min <= index && index <= max)
4823 info->in_drag = TRUE;
4824 info->drag_start_x = event->x;
4825 info->drag_start_y = event->y;
4828 /* start a replacement */
4829 gtk_label_select_region_index (label, index, index);
4834 else if (event->button == 3 && event->type == GDK_BUTTON_PRESS)
4836 gtk_label_do_popup (label, event);
4844 gtk_label_button_release (GtkWidget *widget,
4845 GdkEventButton *event)
4848 GtkLabel *label = GTK_LABEL (widget);
4849 GtkLabelPrivate *priv = label->priv;
4850 GtkLabelSelectionInfo *info = priv->select_info;
4860 get_layout_index (label, event->x, event->y, &index);
4861 gtk_label_select_region_index (label, index, index);
4866 if (event->button != 1)
4869 if (info->active_link &&
4870 info->selection_anchor == info->selection_end &&
4873 emit_activate_link (label, info->active_link);
4874 info->link_clicked = 0;
4879 /* The goal here is to return TRUE iff we ate the
4880 * button press to start selecting.
4886 connect_mnemonics_visible_notify (GtkLabel *label)
4888 GtkLabelPrivate *priv = label->priv;
4889 GtkWidget *toplevel;
4892 toplevel = gtk_widget_get_toplevel (GTK_WIDGET (label));
4894 if (!GTK_IS_WINDOW (toplevel))
4897 /* always set up this widgets initial value */
4898 priv->mnemonics_visible =
4899 gtk_window_get_mnemonics_visible (GTK_WINDOW (toplevel));
4902 GPOINTER_TO_INT (g_object_get_data (G_OBJECT (toplevel),
4903 "gtk-label-mnemonics-visible-connected"));
4907 g_signal_connect (toplevel,
4908 "notify::mnemonics-visible",
4909 G_CALLBACK (label_mnemonics_visible_changed),
4911 g_object_set_data (G_OBJECT (toplevel),
4912 "gtk-label-mnemonics-visible-connected",
4913 GINT_TO_POINTER (1));
4918 drag_begin_cb (GtkWidget *widget,
4919 GdkDragContext *context,
4922 GtkLabel *label = GTK_LABEL (widget);
4923 GtkLabelPrivate *priv = label->priv;
4924 cairo_surface_t *surface = NULL;
4926 g_signal_handlers_disconnect_by_func (widget, drag_begin_cb, NULL);
4928 if ((priv->select_info->selection_anchor !=
4929 priv->select_info->selection_end) &&
4935 start = MIN (priv->select_info->selection_anchor,
4936 priv->select_info->selection_end);
4937 end = MAX (priv->select_info->selection_anchor,
4938 priv->select_info->selection_end);
4940 len = strlen (priv->text);
4948 surface = _gtk_text_util_create_drag_icon (widget,
4955 gtk_drag_set_icon_surface (context, surface);
4956 cairo_surface_destroy (surface);
4960 gtk_drag_set_icon_default (context);
4965 gtk_label_motion (GtkWidget *widget,
4966 GdkEventMotion *event)
4968 GtkLabel *label = GTK_LABEL (widget);
4969 GtkLabelPrivate *priv = label->priv;
4970 GtkLabelSelectionInfo *info = priv->select_info;
4976 if (info->links && !info->in_drag)
4980 gboolean found = FALSE;
4982 if (info->selection_anchor == info->selection_end)
4984 if (get_layout_index (label, event->x, event->y, &index))
4986 for (l = info->links; l != NULL; l = l->next)
4989 if (index >= link->start && index <= link->end)
5000 if (info->active_link != link)
5002 info->link_clicked = 0;
5003 info->active_link = link;
5004 gtk_label_update_cursor (label);
5005 gtk_widget_queue_draw (widget);
5010 if (info->active_link != NULL)
5012 info->link_clicked = 0;
5013 info->active_link = NULL;
5014 gtk_label_update_cursor (label);
5015 gtk_widget_queue_draw (widget);
5020 if (!info->selectable)
5023 if ((event->state & GDK_BUTTON1_MASK) == 0)
5028 if (gtk_drag_check_threshold (widget,
5031 event->x, event->y))
5033 GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
5035 gtk_target_list_add_text_targets (target_list, 0);
5037 g_signal_connect (widget, "drag-begin",
5038 G_CALLBACK (drag_begin_cb), NULL);
5039 gtk_drag_begin (widget, target_list,
5041 1, (GdkEvent *)event);
5043 info->in_drag = FALSE;
5045 gtk_target_list_unref (target_list);
5052 gdk_window_get_device_position (info->window, event->device, &x, &y, NULL);
5053 get_layout_index (label, x, y, &index);
5055 if (info->select_words)
5058 gint old_min, old_max;
5061 min = gtk_label_move_backward_word (label, index);
5062 max = gtk_label_move_forward_word (label, index);
5064 anchor = info->selection_anchor;
5065 end = info->selection_end;
5067 old_min = MIN (anchor, end);
5068 old_max = MAX (anchor, end);
5075 else if (old_max < max)
5080 else if (anchor == old_min)
5091 gtk_label_select_region_index (label, anchor, end);
5094 gtk_label_select_region_index (label, info->selection_anchor, index);
5101 gtk_label_leave_notify (GtkWidget *widget,
5102 GdkEventCrossing *event)
5104 GtkLabel *label = GTK_LABEL (widget);
5105 GtkLabelPrivate *priv = label->priv;
5107 if (priv->select_info)
5109 priv->select_info->active_link = NULL;
5110 gtk_label_update_cursor (label);
5111 gtk_widget_queue_draw (widget);
5114 if (GTK_WIDGET_CLASS (gtk_label_parent_class)->leave_notify_event)
5115 return GTK_WIDGET_CLASS (gtk_label_parent_class)->leave_notify_event (widget, event);
5121 gtk_label_create_window (GtkLabel *label)
5123 GtkLabelPrivate *priv = label->priv;
5124 GtkAllocation allocation;
5126 GdkWindowAttr attributes;
5127 gint attributes_mask;
5129 g_assert (priv->select_info);
5130 widget = GTK_WIDGET (label);
5131 g_assert (gtk_widget_get_realized (widget));
5133 if (priv->select_info->window)
5136 gtk_widget_get_allocation (widget, &allocation);
5138 attributes.x = allocation.x;
5139 attributes.y = allocation.y;
5140 attributes.width = allocation.width;
5141 attributes.height = allocation.height;
5142 attributes.window_type = GDK_WINDOW_CHILD;
5143 attributes.wclass = GDK_INPUT_ONLY;
5144 attributes.override_redirect = TRUE;
5145 attributes.event_mask = gtk_widget_get_events (widget) |
5146 GDK_BUTTON_PRESS_MASK |
5147 GDK_BUTTON_RELEASE_MASK |
5148 GDK_LEAVE_NOTIFY_MASK |
5149 GDK_BUTTON_MOTION_MASK |
5150 GDK_POINTER_MOTION_MASK |
5151 GDK_POINTER_MOTION_HINT_MASK;
5152 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_NOREDIR;
5153 if (gtk_widget_is_sensitive (widget))
5155 attributes.cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget),
5157 attributes_mask |= GDK_WA_CURSOR;
5161 priv->select_info->window = gdk_window_new (gtk_widget_get_window (widget),
5162 &attributes, attributes_mask);
5163 gdk_window_set_user_data (priv->select_info->window, widget);
5165 if (attributes_mask & GDK_WA_CURSOR)
5166 g_object_unref (attributes.cursor);
5170 gtk_label_destroy_window (GtkLabel *label)
5172 GtkLabelPrivate *priv = label->priv;
5174 g_assert (priv->select_info);
5176 if (priv->select_info->window == NULL)
5179 gdk_window_set_user_data (priv->select_info->window, NULL);
5180 gdk_window_destroy (priv->select_info->window);
5181 priv->select_info->window = NULL;
5185 gtk_label_ensure_select_info (GtkLabel *label)
5187 GtkLabelPrivate *priv = label->priv;
5189 if (priv->select_info == NULL)
5191 priv->select_info = g_new0 (GtkLabelSelectionInfo, 1);
5193 gtk_widget_set_can_focus (GTK_WIDGET (label), TRUE);
5195 if (gtk_widget_get_realized (GTK_WIDGET (label)))
5196 gtk_label_create_window (label);
5198 if (gtk_widget_get_mapped (GTK_WIDGET (label)))
5199 gdk_window_show (priv->select_info->window);
5204 gtk_label_clear_select_info (GtkLabel *label)
5206 GtkLabelPrivate *priv = label->priv;
5208 if (priv->select_info == NULL)
5211 if (!priv->select_info->selectable && !priv->select_info->links)
5213 gtk_label_destroy_window (label);
5215 g_free (priv->select_info);
5216 priv->select_info = NULL;
5218 gtk_widget_set_can_focus (GTK_WIDGET (label), FALSE);
5223 * gtk_label_set_selectable:
5224 * @label: a #GtkLabel
5225 * @setting: %TRUE to allow selecting text in the label
5227 * Selectable labels allow the user to select text from the label, for
5231 gtk_label_set_selectable (GtkLabel *label,
5234 GtkLabelPrivate *priv;
5235 gboolean old_setting;
5237 g_return_if_fail (GTK_IS_LABEL (label));
5241 setting = setting != FALSE;
5242 old_setting = priv->select_info && priv->select_info->selectable;
5246 gtk_label_ensure_select_info (label);
5247 priv->select_info->selectable = TRUE;
5248 gtk_label_update_cursor (label);
5254 /* unselect, to give up the selection */
5255 gtk_label_select_region (label, 0, 0);
5257 priv->select_info->selectable = FALSE;
5258 gtk_label_clear_select_info (label);
5259 gtk_label_update_cursor (label);
5262 if (setting != old_setting)
5264 g_object_freeze_notify (G_OBJECT (label));
5265 g_object_notify (G_OBJECT (label), "selectable");
5266 g_object_notify (G_OBJECT (label), "cursor-position");
5267 g_object_notify (G_OBJECT (label), "selection-bound");
5268 g_object_thaw_notify (G_OBJECT (label));
5269 gtk_widget_queue_draw (GTK_WIDGET (label));
5274 * gtk_label_get_selectable:
5275 * @label: a #GtkLabel
5277 * Gets the value set by gtk_label_set_selectable().
5279 * Return value: %TRUE if the user can copy text from the label
5282 gtk_label_get_selectable (GtkLabel *label)
5284 GtkLabelPrivate *priv;
5286 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
5290 return priv->select_info && priv->select_info->selectable;
5294 * gtk_label_set_angle:
5295 * @label: a #GtkLabel
5296 * @angle: the angle that the baseline of the label makes with
5297 * the horizontal, in degrees, measured counterclockwise
5299 * Sets the angle of rotation for the label. An angle of 90 reads from
5300 * from bottom to top, an angle of 270, from top to bottom. The angle
5301 * setting for the label is ignored if the label is selectable,
5302 * wrapped, or ellipsized.
5307 gtk_label_set_angle (GtkLabel *label,
5310 GtkLabelPrivate *priv;
5312 g_return_if_fail (GTK_IS_LABEL (label));
5316 /* Canonicalize to [0,360]. We don't canonicalize 360 to 0, because
5317 * double property ranges are inclusive, and changing 360 to 0 would
5318 * make a property editor behave strangely.
5320 if (angle < 0 || angle > 360.0)
5321 angle = angle - 360. * floor (angle / 360.);
5323 if (priv->angle != angle)
5325 priv->angle = angle;
5327 gtk_label_clear_layout (label);
5328 gtk_widget_queue_resize (GTK_WIDGET (label));
5330 g_object_notify (G_OBJECT (label), "angle");
5335 * gtk_label_get_angle:
5336 * @label: a #GtkLabel
5338 * Gets the angle of rotation for the label. See
5339 * gtk_label_set_angle().
5341 * Return value: the angle of rotation for the label
5346 gtk_label_get_angle (GtkLabel *label)
5348 g_return_val_if_fail (GTK_IS_LABEL (label), 0.0);
5350 return label->priv->angle;
5354 gtk_label_set_selection_text (GtkLabel *label,
5355 GtkSelectionData *selection_data)
5357 GtkLabelPrivate *priv = label->priv;
5359 if ((priv->select_info->selection_anchor !=
5360 priv->select_info->selection_end) &&
5366 start = MIN (priv->select_info->selection_anchor,
5367 priv->select_info->selection_end);
5368 end = MAX (priv->select_info->selection_anchor,
5369 priv->select_info->selection_end);
5371 len = strlen (priv->text);
5379 gtk_selection_data_set_text (selection_data,
5386 gtk_label_drag_data_get (GtkWidget *widget,
5387 GdkDragContext *context,
5388 GtkSelectionData *selection_data,
5392 gtk_label_set_selection_text (GTK_LABEL (widget), selection_data);
5396 get_text_callback (GtkClipboard *clipboard,
5397 GtkSelectionData *selection_data,
5399 gpointer user_data_or_owner)
5401 gtk_label_set_selection_text (GTK_LABEL (user_data_or_owner), selection_data);
5405 clear_text_callback (GtkClipboard *clipboard,
5406 gpointer user_data_or_owner)
5409 GtkLabelPrivate *priv;
5411 label = GTK_LABEL (user_data_or_owner);
5414 if (priv->select_info)
5416 priv->select_info->selection_anchor = priv->select_info->selection_end;
5418 gtk_widget_queue_draw (GTK_WIDGET (label));
5423 gtk_label_select_region_index (GtkLabel *label,
5427 GtkLabelPrivate *priv;
5429 g_return_if_fail (GTK_IS_LABEL (label));
5433 if (priv->select_info && priv->select_info->selectable)
5435 GtkClipboard *clipboard;
5437 if (priv->select_info->selection_anchor == anchor_index &&
5438 priv->select_info->selection_end == end_index)
5441 priv->select_info->selection_anchor = anchor_index;
5442 priv->select_info->selection_end = end_index;
5444 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (label),
5445 GDK_SELECTION_PRIMARY);
5447 if (anchor_index != end_index)
5449 GtkTargetList *list;
5450 GtkTargetEntry *targets;
5453 list = gtk_target_list_new (NULL, 0);
5454 gtk_target_list_add_text_targets (list, 0);
5455 targets = gtk_target_table_new_from_list (list, &n_targets);
5457 gtk_clipboard_set_with_owner (clipboard,
5460 clear_text_callback,
5463 gtk_target_table_free (targets, n_targets);
5464 gtk_target_list_unref (list);
5468 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (label))
5469 gtk_clipboard_clear (clipboard);
5472 gtk_widget_queue_draw (GTK_WIDGET (label));
5474 g_object_freeze_notify (G_OBJECT (label));
5475 g_object_notify (G_OBJECT (label), "cursor-position");
5476 g_object_notify (G_OBJECT (label), "selection-bound");
5477 g_object_thaw_notify (G_OBJECT (label));
5482 * gtk_label_select_region:
5483 * @label: a #GtkLabel
5484 * @start_offset: start offset (in characters not bytes)
5485 * @end_offset: end offset (in characters not bytes)
5487 * Selects a range of characters in the label, if the label is selectable.
5488 * See gtk_label_set_selectable(). If the label is not selectable,
5489 * this function has no effect. If @start_offset or
5490 * @end_offset are -1, then the end of the label will be substituted.
5493 gtk_label_select_region (GtkLabel *label,
5497 GtkLabelPrivate *priv;
5499 g_return_if_fail (GTK_IS_LABEL (label));
5503 if (priv->text && priv->select_info)
5505 if (start_offset < 0)
5506 start_offset = g_utf8_strlen (priv->text, -1);
5509 end_offset = g_utf8_strlen (priv->text, -1);
5511 gtk_label_select_region_index (label,
5512 g_utf8_offset_to_pointer (priv->text, start_offset) - priv->text,
5513 g_utf8_offset_to_pointer (priv->text, end_offset) - priv->text);
5518 * gtk_label_get_selection_bounds:
5519 * @label: a #GtkLabel
5520 * @start: (out): return location for start of selection, as a character offset
5521 * @end: (out): return location for end of selection, as a character offset
5523 * Gets the selected range of characters in the label, returning %TRUE
5524 * if there's a selection.
5526 * Return value: %TRUE if selection is non-empty
5529 gtk_label_get_selection_bounds (GtkLabel *label,
5533 GtkLabelPrivate *priv;
5535 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
5539 if (priv->select_info == NULL)
5541 /* not a selectable label */
5551 gint start_index, end_index;
5552 gint start_offset, end_offset;
5555 start_index = MIN (priv->select_info->selection_anchor,
5556 priv->select_info->selection_end);
5557 end_index = MAX (priv->select_info->selection_anchor,
5558 priv->select_info->selection_end);
5560 len = strlen (priv->text);
5562 if (end_index > len)
5565 if (start_index > len)
5568 start_offset = g_utf8_strlen (priv->text, start_index);
5569 end_offset = g_utf8_strlen (priv->text, end_index);
5571 if (start_offset > end_offset)
5573 gint tmp = start_offset;
5574 start_offset = end_offset;
5579 *start = start_offset;
5584 return start_offset != end_offset;
5590 * gtk_label_get_layout:
5591 * @label: a #GtkLabel
5593 * Gets the #PangoLayout used to display the label.
5594 * The layout is useful to e.g. convert text positions to
5595 * pixel positions, in combination with gtk_label_get_layout_offsets().
5596 * The returned layout is owned by the @label so need not be
5597 * freed by the caller. The @label is free to recreate its layout at
5598 * any time, so it should be considered read-only.
5600 * Return value: (transfer none): the #PangoLayout for this label
5603 gtk_label_get_layout (GtkLabel *label)
5605 GtkLabelPrivate *priv;
5607 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
5611 gtk_label_ensure_layout (label);
5613 return priv->layout;
5617 * gtk_label_get_layout_offsets:
5618 * @label: a #GtkLabel
5619 * @x: (out) (allow-none): location to store X offset of layout, or %NULL
5620 * @y: (out) (allow-none): location to store Y offset of layout, or %NULL
5622 * Obtains the coordinates where the label will draw the #PangoLayout
5623 * representing the text in the label; useful to convert mouse events
5624 * into coordinates inside the #PangoLayout, e.g. to take some action
5625 * if some part of the label is clicked. Of course you will need to
5626 * create a #GtkEventBox to receive the events, and pack the label
5627 * inside it, since labels are a #GTK_NO_WINDOW widget. Remember
5628 * when using the #PangoLayout functions you need to convert to
5629 * and from pixels using PANGO_PIXELS() or #PANGO_SCALE.
5632 gtk_label_get_layout_offsets (GtkLabel *label,
5636 g_return_if_fail (GTK_IS_LABEL (label));
5638 gtk_label_ensure_layout (label);
5640 get_layout_location (label, x, y);
5644 * gtk_label_set_use_markup:
5645 * @label: a #GtkLabel
5646 * @setting: %TRUE if the label's text should be parsed for markup.
5648 * Sets whether the text of the label contains markup in <link
5649 * linkend="PangoMarkupFormat">Pango's text markup
5650 * language</link>. See gtk_label_set_markup().
5653 gtk_label_set_use_markup (GtkLabel *label,
5656 g_return_if_fail (GTK_IS_LABEL (label));
5658 gtk_label_set_use_markup_internal (label, setting);
5659 gtk_label_recalculate (label);
5663 * gtk_label_get_use_markup:
5664 * @label: a #GtkLabel
5666 * Returns whether the label's text is interpreted as marked up with
5667 * the <link linkend="PangoMarkupFormat">Pango text markup
5668 * language</link>. See gtk_label_set_use_markup ().
5670 * Return value: %TRUE if the label's text will be parsed for markup.
5673 gtk_label_get_use_markup (GtkLabel *label)
5675 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
5677 return label->priv->use_markup;
5681 * gtk_label_set_use_underline:
5682 * @label: a #GtkLabel
5683 * @setting: %TRUE if underlines in the text indicate mnemonics
5685 * If true, an underline in the text indicates the next character should be
5686 * used for the mnemonic accelerator key.
5689 gtk_label_set_use_underline (GtkLabel *label,
5692 g_return_if_fail (GTK_IS_LABEL (label));
5694 gtk_label_set_use_underline_internal (label, setting);
5695 gtk_label_recalculate (label);
5699 * gtk_label_get_use_underline:
5700 * @label: a #GtkLabel
5702 * Returns whether an embedded underline in the label indicates a
5703 * mnemonic. See gtk_label_set_use_underline().
5705 * Return value: %TRUE whether an embedded underline in the label indicates
5706 * the mnemonic accelerator keys.
5709 gtk_label_get_use_underline (GtkLabel *label)
5711 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
5713 return label->priv->use_underline;
5717 * gtk_label_set_single_line_mode:
5718 * @label: a #GtkLabel
5719 * @single_line_mode: %TRUE if the label should be in single line mode
5721 * Sets whether the label is in single line mode.
5726 gtk_label_set_single_line_mode (GtkLabel *label,
5727 gboolean single_line_mode)
5729 GtkLabelPrivate *priv;
5731 g_return_if_fail (GTK_IS_LABEL (label));
5735 single_line_mode = single_line_mode != FALSE;
5737 if (priv->single_line_mode != single_line_mode)
5739 priv->single_line_mode = single_line_mode;
5741 gtk_label_clear_layout (label);
5742 gtk_widget_queue_resize (GTK_WIDGET (label));
5744 g_object_notify (G_OBJECT (label), "single-line-mode");
5749 * gtk_label_get_single_line_mode:
5750 * @label: a #GtkLabel
5752 * Returns whether the label is in single line mode.
5754 * Return value: %TRUE when the label is in single line mode.
5759 gtk_label_get_single_line_mode (GtkLabel *label)
5761 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
5763 return label->priv->single_line_mode;
5766 /* Compute the X position for an offset that corresponds to the "more important
5767 * cursor position for that offset. We use this when trying to guess to which
5768 * end of the selection we should go to when the user hits the left or
5772 get_better_cursor (GtkLabel *label,
5777 GtkLabelPrivate *priv = label->priv;
5778 GdkKeymap *keymap = gdk_keymap_get_for_display (gtk_widget_get_display (GTK_WIDGET (label)));
5779 PangoDirection keymap_direction = gdk_keymap_get_direction (keymap);
5780 PangoDirection cursor_direction = get_cursor_direction (label);
5781 gboolean split_cursor;
5782 PangoRectangle strong_pos, weak_pos;
5784 g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
5785 "gtk-split-cursor", &split_cursor,
5788 gtk_label_ensure_layout (label);
5790 pango_layout_get_cursor_pos (priv->layout, index,
5791 &strong_pos, &weak_pos);
5795 *x = strong_pos.x / PANGO_SCALE;
5796 *y = strong_pos.y / PANGO_SCALE;
5800 if (keymap_direction == cursor_direction)
5802 *x = strong_pos.x / PANGO_SCALE;
5803 *y = strong_pos.y / PANGO_SCALE;
5807 *x = weak_pos.x / PANGO_SCALE;
5808 *y = weak_pos.y / PANGO_SCALE;
5815 gtk_label_move_logically (GtkLabel *label,
5819 GtkLabelPrivate *priv = label->priv;
5820 gint offset = g_utf8_pointer_to_offset (priv->text,
5821 priv->text + start);
5825 PangoLogAttr *log_attrs;
5829 gtk_label_ensure_layout (label);
5831 length = g_utf8_strlen (priv->text, -1);
5833 pango_layout_get_log_attrs (priv->layout, &log_attrs, &n_attrs);
5835 while (count > 0 && offset < length)
5839 while (offset < length && !log_attrs[offset].is_cursor_position);
5843 while (count < 0 && offset > 0)
5847 while (offset > 0 && !log_attrs[offset].is_cursor_position);
5855 return g_utf8_offset_to_pointer (priv->text, offset) - priv->text;
5859 gtk_label_move_visually (GtkLabel *label,
5863 GtkLabelPrivate *priv = label->priv;
5870 int new_index, new_trailing;
5871 gboolean split_cursor;
5874 gtk_label_ensure_layout (label);
5876 g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
5877 "gtk-split-cursor", &split_cursor,
5884 GdkKeymap *keymap = gdk_keymap_get_for_display (gtk_widget_get_display (GTK_WIDGET (label)));
5885 PangoDirection keymap_direction = gdk_keymap_get_direction (keymap);
5887 strong = keymap_direction == get_cursor_direction (label);
5892 pango_layout_move_cursor_visually (priv->layout, strong, index, 0, 1, &new_index, &new_trailing);
5897 pango_layout_move_cursor_visually (priv->layout, strong, index, 0, -1, &new_index, &new_trailing);
5901 if (new_index < 0 || new_index == G_MAXINT)
5906 while (new_trailing--)
5907 index = g_utf8_next_char (priv->text + new_index) - priv->text;
5914 gtk_label_move_forward_word (GtkLabel *label,
5917 GtkLabelPrivate *priv = label->priv;
5918 gint new_pos = g_utf8_pointer_to_offset (priv->text,
5919 priv->text + start);
5922 length = g_utf8_strlen (priv->text, -1);
5923 if (new_pos < length)
5925 PangoLogAttr *log_attrs;
5928 gtk_label_ensure_layout (label);
5930 pango_layout_get_log_attrs (priv->layout, &log_attrs, &n_attrs);
5932 /* Find the next word end */
5934 while (new_pos < n_attrs && !log_attrs[new_pos].is_word_end)
5940 return g_utf8_offset_to_pointer (priv->text, new_pos) - priv->text;
5945 gtk_label_move_backward_word (GtkLabel *label,
5948 GtkLabelPrivate *priv = label->priv;
5949 gint new_pos = g_utf8_pointer_to_offset (priv->text,
5950 priv->text + start);
5954 PangoLogAttr *log_attrs;
5957 gtk_label_ensure_layout (label);
5959 pango_layout_get_log_attrs (priv->layout, &log_attrs, &n_attrs);
5963 /* Find the previous word beginning */
5964 while (new_pos > 0 && !log_attrs[new_pos].is_word_start)
5970 return g_utf8_offset_to_pointer (priv->text, new_pos) - priv->text;
5974 gtk_label_move_cursor (GtkLabel *label,
5975 GtkMovementStep step,
5977 gboolean extend_selection)
5979 GtkLabelPrivate *priv = label->priv;
5983 if (priv->select_info == NULL)
5986 old_pos = new_pos = priv->select_info->selection_end;
5988 if (priv->select_info->selection_end != priv->select_info->selection_anchor &&
5991 /* If we have a current selection and aren't extending it, move to the
5992 * start/or end of the selection as appropriate
5996 case GTK_MOVEMENT_VISUAL_POSITIONS:
5999 gint anchor_x, anchor_y;
6000 gboolean end_is_left;
6002 get_better_cursor (label, priv->select_info->selection_end, &end_x, &end_y);
6003 get_better_cursor (label, priv->select_info->selection_anchor, &anchor_x, &anchor_y);
6005 end_is_left = (end_y < anchor_y) || (end_y == anchor_y && end_x < anchor_x);
6008 new_pos = end_is_left ? priv->select_info->selection_end : priv->select_info->selection_anchor;
6010 new_pos = !end_is_left ? priv->select_info->selection_end : priv->select_info->selection_anchor;
6013 case GTK_MOVEMENT_LOGICAL_POSITIONS:
6014 case GTK_MOVEMENT_WORDS:
6016 new_pos = MIN (priv->select_info->selection_end, priv->select_info->selection_anchor);
6018 new_pos = MAX (priv->select_info->selection_end, priv->select_info->selection_anchor);
6020 case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
6021 case GTK_MOVEMENT_PARAGRAPH_ENDS:
6022 case GTK_MOVEMENT_BUFFER_ENDS:
6023 /* FIXME: Can do better here */
6024 new_pos = count < 0 ? 0 : strlen (priv->text);
6026 case GTK_MOVEMENT_DISPLAY_LINES:
6027 case GTK_MOVEMENT_PARAGRAPHS:
6028 case GTK_MOVEMENT_PAGES:
6029 case GTK_MOVEMENT_HORIZONTAL_PAGES:
6037 case GTK_MOVEMENT_LOGICAL_POSITIONS:
6038 new_pos = gtk_label_move_logically (label, new_pos, count);
6040 case GTK_MOVEMENT_VISUAL_POSITIONS:
6041 new_pos = gtk_label_move_visually (label, new_pos, count);
6042 if (new_pos == old_pos)
6044 if (!extend_selection)
6046 if (!gtk_widget_keynav_failed (GTK_WIDGET (label),
6048 GTK_DIR_RIGHT : GTK_DIR_LEFT))
6050 GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (label));
6053 gtk_widget_child_focus (toplevel,
6055 GTK_DIR_RIGHT : GTK_DIR_LEFT);
6060 gtk_widget_error_bell (GTK_WIDGET (label));
6064 case GTK_MOVEMENT_WORDS:
6067 new_pos = gtk_label_move_forward_word (label, new_pos);
6072 new_pos = gtk_label_move_backward_word (label, new_pos);
6075 if (new_pos == old_pos)
6076 gtk_widget_error_bell (GTK_WIDGET (label));
6078 case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
6079 case GTK_MOVEMENT_PARAGRAPH_ENDS:
6080 case GTK_MOVEMENT_BUFFER_ENDS:
6081 /* FIXME: Can do better here */
6082 new_pos = count < 0 ? 0 : strlen (priv->text);
6083 if (new_pos == old_pos)
6084 gtk_widget_error_bell (GTK_WIDGET (label));
6086 case GTK_MOVEMENT_DISPLAY_LINES:
6087 case GTK_MOVEMENT_PARAGRAPHS:
6088 case GTK_MOVEMENT_PAGES:
6089 case GTK_MOVEMENT_HORIZONTAL_PAGES:
6094 if (extend_selection)
6095 gtk_label_select_region_index (label,
6096 priv->select_info->selection_anchor,
6099 gtk_label_select_region_index (label, new_pos, new_pos);
6103 gtk_label_copy_clipboard (GtkLabel *label)
6105 GtkLabelPrivate *priv = label->priv;
6107 if (priv->text && priv->select_info)
6111 GtkClipboard *clipboard;
6113 start = MIN (priv->select_info->selection_anchor,
6114 priv->select_info->selection_end);
6115 end = MAX (priv->select_info->selection_anchor,
6116 priv->select_info->selection_end);
6118 len = strlen (priv->text);
6126 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (label), GDK_SELECTION_CLIPBOARD);
6129 gtk_clipboard_set_text (clipboard, priv->text + start, end - start);
6134 link = gtk_label_get_focus_link (label);
6136 gtk_clipboard_set_text (clipboard, link->uri, -1);
6142 gtk_label_select_all (GtkLabel *label)
6144 GtkLabelPrivate *priv = label->priv;
6146 gtk_label_select_region_index (label, 0, strlen (priv->text));
6149 /* Quick hack of a popup menu
6152 activate_cb (GtkWidget *menuitem,
6155 const gchar *signal = g_object_get_data (G_OBJECT (menuitem), "gtk-signal");
6156 g_signal_emit_by_name (label, signal);
6160 append_action_signal (GtkLabel *label,
6162 const gchar *stock_id,
6163 const gchar *signal,
6166 GtkWidget *menuitem = gtk_image_menu_item_new_from_stock (stock_id, NULL);
6168 g_object_set_data (G_OBJECT (menuitem), I_("gtk-signal"), (char *)signal);
6169 g_signal_connect (menuitem, "activate",
6170 G_CALLBACK (activate_cb), label);
6172 gtk_widget_set_sensitive (menuitem, sensitive);
6174 gtk_widget_show (menuitem);
6175 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6179 popup_menu_detach (GtkWidget *attach_widget,
6182 GtkLabel *label = GTK_LABEL (attach_widget);
6183 GtkLabelPrivate *priv = label->priv;
6185 if (priv->select_info)
6186 priv->select_info->popup_menu = NULL;
6190 popup_position_func (GtkMenu *menu,
6198 GtkAllocation allocation;
6202 label = GTK_LABEL (user_data);
6203 widget = GTK_WIDGET (label);
6205 g_return_if_fail (gtk_widget_get_realized (widget));
6207 screen = gtk_widget_get_screen (widget);
6208 gdk_window_get_origin (gtk_widget_get_window (widget), x, y);
6210 gtk_widget_get_allocation (widget, &allocation);
6215 gtk_widget_get_preferred_size (GTK_WIDGET (menu),
6218 gtk_widget_get_allocation (widget, &allocation);
6220 *x += allocation.width / 2;
6221 *y += allocation.height;
6223 *x = CLAMP (*x, 0, MAX (0, gdk_screen_get_width (screen) - req.width));
6224 *y = CLAMP (*y, 0, MAX (0, gdk_screen_get_height (screen) - req.height));
6228 open_link_activate_cb (GtkMenuItem *menu_item,
6233 link = gtk_label_get_current_link (label);
6236 emit_activate_link (label, link);
6240 copy_link_activate_cb (GtkMenuItem *menu_item,
6243 GtkClipboard *clipboard;
6246 uri = gtk_label_get_current_uri (label);
6249 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (label), GDK_SELECTION_CLIPBOARD);
6250 gtk_clipboard_set_text (clipboard, uri, -1);
6255 gtk_label_popup_menu (GtkWidget *widget)
6257 gtk_label_do_popup (GTK_LABEL (widget), NULL);
6263 gtk_label_do_popup (GtkLabel *label,
6264 GdkEventButton *event)
6266 GtkLabelPrivate *priv = label->priv;
6267 GtkWidget *menuitem;
6270 gboolean have_selection;
6273 if (!priv->select_info)
6276 if (priv->select_info->popup_menu)
6277 gtk_widget_destroy (priv->select_info->popup_menu);
6279 priv->select_info->popup_menu = menu = gtk_menu_new ();
6281 gtk_menu_attach_to_widget (GTK_MENU (menu), GTK_WIDGET (label), popup_menu_detach);
6284 priv->select_info->selection_anchor != priv->select_info->selection_end;
6288 if (priv->select_info->link_clicked)
6289 link = priv->select_info->active_link;
6294 link = gtk_label_get_focus_link (label);
6296 if (!have_selection && link)
6299 menuitem = gtk_image_menu_item_new_with_mnemonic (_("_Open Link"));
6300 gtk_widget_show (menuitem);
6301 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6303 g_signal_connect (G_OBJECT (menuitem), "activate",
6304 G_CALLBACK (open_link_activate_cb), label);
6306 image = gtk_image_new_from_stock (GTK_STOCK_JUMP_TO, GTK_ICON_SIZE_MENU);
6307 gtk_widget_show (image);
6308 gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (menuitem), image);
6310 /* Copy Link Address */
6311 menuitem = gtk_image_menu_item_new_with_mnemonic (_("Copy _Link Address"));
6312 gtk_widget_show (menuitem);
6313 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6315 g_signal_connect (G_OBJECT (menuitem), "activate",
6316 G_CALLBACK (copy_link_activate_cb), label);
6318 image = gtk_image_new_from_stock (GTK_STOCK_COPY, GTK_ICON_SIZE_MENU);
6319 gtk_widget_show (image);
6320 gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (menuitem), image);
6324 append_action_signal (label, menu, GTK_STOCK_CUT, "cut-clipboard", FALSE);
6325 append_action_signal (label, menu, GTK_STOCK_COPY, "copy-clipboard", have_selection);
6326 append_action_signal (label, menu, GTK_STOCK_PASTE, "paste-clipboard", FALSE);
6328 menuitem = gtk_image_menu_item_new_from_stock (GTK_STOCK_DELETE, NULL);
6329 gtk_widget_set_sensitive (menuitem, FALSE);
6330 gtk_widget_show (menuitem);
6331 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6333 menuitem = gtk_separator_menu_item_new ();
6334 gtk_widget_show (menuitem);
6335 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6337 menuitem = gtk_image_menu_item_new_from_stock (GTK_STOCK_SELECT_ALL, NULL);
6338 g_signal_connect_swapped (menuitem, "activate",
6339 G_CALLBACK (gtk_label_select_all), label);
6340 gtk_widget_show (menuitem);
6341 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6344 g_signal_emit (label, signals[POPULATE_POPUP], 0, menu);
6347 gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
6349 event->button, event->time);
6352 gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
6353 popup_position_func, label,
6354 0, gtk_get_current_event_time ());
6355 gtk_menu_shell_select_first (GTK_MENU_SHELL (menu), FALSE);
6360 gtk_label_clear_links (GtkLabel *label)
6362 GtkLabelPrivate *priv = label->priv;
6364 if (!priv->select_info)
6367 g_list_foreach (priv->select_info->links, (GFunc)link_free, NULL);
6368 g_list_free (priv->select_info->links);
6369 priv->select_info->links = NULL;
6370 priv->select_info->active_link = NULL;
6374 gtk_label_rescan_links (GtkLabel *label)
6376 GtkLabelPrivate *priv = label->priv;
6377 PangoLayout *layout = priv->layout;
6378 PangoAttrList *attlist;
6379 PangoAttrIterator *iter;
6382 if (!priv->select_info || !priv->select_info->links)
6385 attlist = pango_layout_get_attributes (layout);
6387 if (attlist == NULL)
6390 iter = pango_attr_list_get_iterator (attlist);
6392 links = priv->select_info->links;
6396 PangoAttribute *underline;
6397 PangoAttribute *color;
6399 underline = pango_attr_iterator_get (iter, PANGO_ATTR_UNDERLINE);
6400 color = pango_attr_iterator_get (iter, PANGO_ATTR_FOREGROUND);
6402 if (underline != NULL && color != NULL)
6405 PangoRectangle start_pos;
6406 PangoRectangle end_pos;
6409 pango_attr_iterator_range (iter, &start, &end);
6410 pango_layout_index_to_pos (layout, start, &start_pos);
6411 pango_layout_index_to_pos (layout, end, &end_pos);
6415 g_warning ("Ran out of links");
6419 links = links->next;
6420 link->start = start;
6423 } while (pango_attr_iterator_next (iter));
6425 pango_attr_iterator_destroy (iter);
6429 gtk_label_activate_link (GtkLabel *label,
6432 GtkWidget *widget = GTK_WIDGET (label);
6433 GError *error = NULL;
6435 if (!gtk_show_uri (gtk_widget_get_screen (widget),
6436 uri, gtk_get_current_event_time (), &error))
6438 g_warning ("Unable to show '%s': %s", uri, error->message);
6439 g_error_free (error);
6446 emit_activate_link (GtkLabel *label,
6449 GtkLabelPrivate *priv = label->priv;
6452 g_signal_emit (label, signals[ACTIVATE_LINK], 0, link->uri, &handled);
6453 if (handled && priv->track_links && !link->visited)
6455 link->visited = TRUE;
6456 /* FIXME: shouldn't have to redo everything here */
6457 gtk_label_recalculate (label);
6462 gtk_label_activate_current_link (GtkLabel *label)
6465 GtkWidget *widget = GTK_WIDGET (label);
6467 link = gtk_label_get_focus_link (label);
6471 emit_activate_link (label, link);
6475 GtkWidget *toplevel;
6477 GtkWidget *default_widget, *focus_widget;
6479 toplevel = gtk_widget_get_toplevel (widget);
6480 if (GTK_IS_WINDOW (toplevel))
6482 window = GTK_WINDOW (toplevel);
6486 default_widget = gtk_window_get_default_widget (window);
6487 focus_widget = gtk_window_get_focus (window);
6489 if (default_widget != widget &&
6490 !(widget == focus_widget && (!default_widget || !gtk_widget_is_sensitive (default_widget))))
6491 gtk_window_activate_default (window);
6497 static GtkLabelLink *
6498 gtk_label_get_current_link (GtkLabel *label)
6500 GtkLabelPrivate *priv = label->priv;
6503 if (!priv->select_info)
6506 if (priv->select_info->link_clicked)
6507 link = priv->select_info->active_link;
6509 link = gtk_label_get_focus_link (label);
6515 * gtk_label_get_current_uri:
6516 * @label: a #GtkLabel
6518 * Returns the URI for the currently active link in the label.
6519 * The active link is the one under the mouse pointer or, in a
6520 * selectable label, the link in which the text cursor is currently
6523 * This function is intended for use in a #GtkLabel::activate-link handler
6524 * or for use in a #GtkWidget::query-tooltip handler.
6526 * Returns: the currently active URI. The string is owned by GTK+ and must
6527 * not be freed or modified.
6531 G_CONST_RETURN gchar *
6532 gtk_label_get_current_uri (GtkLabel *label)
6536 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
6538 link = gtk_label_get_current_link (label);
6547 * gtk_label_set_track_visited_links:
6548 * @label: a #GtkLabel
6549 * @track_links: %TRUE to track visited links
6551 * Sets whether the label should keep track of clicked
6552 * links (and use a different color for them).
6557 gtk_label_set_track_visited_links (GtkLabel *label,
6558 gboolean track_links)
6560 GtkLabelPrivate *priv;
6562 g_return_if_fail (GTK_IS_LABEL (label));
6566 track_links = track_links != FALSE;
6568 if (priv->track_links != track_links)
6570 priv->track_links = track_links;
6572 /* FIXME: shouldn't have to redo everything here */
6573 gtk_label_recalculate (label);
6575 g_object_notify (G_OBJECT (label), "track-visited-links");
6580 * gtk_label_get_track_visited_links:
6581 * @label: a #GtkLabel
6583 * Returns whether the label is currently keeping track
6586 * Returns: %TRUE if clicked links are remembered
6591 gtk_label_get_track_visited_links (GtkLabel *label)
6593 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
6595 return label->priv->track_links;
6599 gtk_label_query_tooltip (GtkWidget *widget,
6602 gboolean keyboard_tip,
6603 GtkTooltip *tooltip)
6605 GtkLabel *label = GTK_LABEL (widget);
6606 GtkLabelPrivate *priv = label->priv;
6607 GtkLabelSelectionInfo *info = priv->select_info;
6611 if (info && info->links)
6615 if (info->selection_anchor == info->selection_end)
6616 index = info->selection_anchor;
6620 if (!get_layout_index (label, x, y, &index))
6626 for (l = info->links; l != NULL; l = l->next)
6628 GtkLabelLink *link = l->data;
6629 if (index >= link->start && index <= link->end)
6633 gtk_tooltip_set_markup (tooltip, link->title);
6642 return GTK_WIDGET_CLASS (gtk_label_parent_class)->query_tooltip (widget,