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;
284 gint max_width_chars;
287 /* Notes about the handling of links:
289 * Links share the GtkLabelSelectionInfo struct with selectable labels.
290 * There are some new fields for links. The links field contains the list
291 * of GtkLabelLink structs that describe the links which are embedded in
292 * the label. The active_link field points to the link under the mouse
293 * pointer. For keyboard navigation, the 'focus' link is determined by
294 * finding the link which contains the selection_anchor position.
295 * The link_clicked field is used with button press and release events
296 * to ensure that pressing inside a link and releasing outside of it
297 * does not activate the link.
299 * Links are rendered with the link-color/visited-link-color colors
300 * that are determined by the style and with an underline. When the mouse
301 * pointer is over a link, the pointer is changed to indicate the link,
302 * and the background behind the link is rendered with the base[PRELIGHT]
303 * color. While a button is pressed over a link, the background is rendered
304 * with the base[ACTIVE] color.
306 * Labels with links accept keyboard focus, and it is possible to move
307 * the focus between the embedded links using Tab/Shift-Tab. The focus
308 * is indicated by a focus rectangle that is drawn around the link text.
309 * Pressing Enter activates the focussed link, and there is a suitable
310 * context menu for links that can be opened with the Menu key. Pressing
311 * Control-C copies the link URI to the clipboard.
313 * In selectable labels with links, link functionality is only available
314 * when the selection is empty.
319 gchar *title; /* the title attribute, used as tooltip */
320 gboolean visited; /* get set when the link is activated; this flag
321 * gets preserved over later set_markup() calls
323 gint start; /* position of the link in the PangoLayout */
327 struct _GtkLabelSelectionInfo
330 gint selection_anchor;
332 GtkWidget *popup_menu;
335 GtkLabelLink *active_link;
341 guint select_words : 1;
342 guint selectable : 1;
343 guint link_clicked : 1;
351 ACTIVATE_CURRENT_LINK,
366 PROP_MNEMONIC_KEYVAL,
367 PROP_MNEMONIC_WIDGET,
368 PROP_CURSOR_POSITION,
369 PROP_SELECTION_BOUND,
372 PROP_SINGLE_LINE_MODE,
374 PROP_MAX_WIDTH_CHARS,
375 PROP_TRACK_VISITED_LINKS
378 /* When rotating ellipsizable text we want the natural size to request
379 * more to ensure the label wont ever ellipsize in an allocation of full natural size.
381 #define ROTATION_ELLIPSIZE_PADDING 2
383 static guint signals[LAST_SIGNAL] = { 0 };
385 static const GdkColor default_link_color = { 0, 0, 0, 0xeeee };
386 static const GdkColor default_visited_link_color = { 0, 0x5555, 0x1a1a, 0x8b8b };
388 static void gtk_label_set_property (GObject *object,
392 static void gtk_label_get_property (GObject *object,
396 static void gtk_label_finalize (GObject *object);
397 static void gtk_label_destroy (GtkWidget *widget);
398 static void gtk_label_size_allocate (GtkWidget *widget,
399 GtkAllocation *allocation);
400 static void gtk_label_state_changed (GtkWidget *widget,
402 static void gtk_label_style_updated (GtkWidget *widget);
403 static void gtk_label_direction_changed (GtkWidget *widget,
404 GtkTextDirection previous_dir);
405 static gint gtk_label_draw (GtkWidget *widget,
407 static gboolean gtk_label_focus (GtkWidget *widget,
408 GtkDirectionType direction);
410 static void gtk_label_realize (GtkWidget *widget);
411 static void gtk_label_unrealize (GtkWidget *widget);
412 static void gtk_label_map (GtkWidget *widget);
413 static void gtk_label_unmap (GtkWidget *widget);
415 static gboolean gtk_label_button_press (GtkWidget *widget,
416 GdkEventButton *event);
417 static gboolean gtk_label_button_release (GtkWidget *widget,
418 GdkEventButton *event);
419 static gboolean gtk_label_motion (GtkWidget *widget,
420 GdkEventMotion *event);
421 static gboolean gtk_label_leave_notify (GtkWidget *widget,
422 GdkEventCrossing *event);
424 static void gtk_label_grab_focus (GtkWidget *widget);
426 static gboolean gtk_label_query_tooltip (GtkWidget *widget,
429 gboolean keyboard_tip,
430 GtkTooltip *tooltip);
432 static void gtk_label_set_text_internal (GtkLabel *label,
434 static void gtk_label_set_label_internal (GtkLabel *label,
436 static void gtk_label_set_use_markup_internal (GtkLabel *label,
438 static void gtk_label_set_use_underline_internal (GtkLabel *label,
440 static void gtk_label_set_attributes_internal (GtkLabel *label,
441 PangoAttrList *attrs);
442 static void gtk_label_set_uline_text_internal (GtkLabel *label,
444 static void gtk_label_set_pattern_internal (GtkLabel *label,
445 const gchar *pattern,
446 gboolean is_mnemonic);
447 static void gtk_label_set_markup_internal (GtkLabel *label,
449 gboolean with_uline);
450 static void gtk_label_recalculate (GtkLabel *label);
451 static void gtk_label_hierarchy_changed (GtkWidget *widget,
452 GtkWidget *old_toplevel);
453 static void gtk_label_screen_changed (GtkWidget *widget,
454 GdkScreen *old_screen);
455 static gboolean gtk_label_popup_menu (GtkWidget *widget);
457 static void gtk_label_create_window (GtkLabel *label);
458 static void gtk_label_destroy_window (GtkLabel *label);
459 static void gtk_label_ensure_select_info (GtkLabel *label);
460 static void gtk_label_clear_select_info (GtkLabel *label);
461 static void gtk_label_update_cursor (GtkLabel *label);
462 static void gtk_label_clear_layout (GtkLabel *label);
463 static void gtk_label_ensure_layout (GtkLabel *label);
464 static void gtk_label_invalidate_wrap_width (GtkLabel *label);
465 static void gtk_label_select_region_index (GtkLabel *label,
469 static gboolean gtk_label_mnemonic_activate (GtkWidget *widget,
470 gboolean group_cycling);
471 static void gtk_label_setup_mnemonic (GtkLabel *label,
473 static void gtk_label_drag_data_get (GtkWidget *widget,
474 GdkDragContext *context,
475 GtkSelectionData *selection_data,
479 static void gtk_label_buildable_interface_init (GtkBuildableIface *iface);
480 static gboolean gtk_label_buildable_custom_tag_start (GtkBuildable *buildable,
483 const gchar *tagname,
484 GMarkupParser *parser,
487 static void gtk_label_buildable_custom_finished (GtkBuildable *buildable,
490 const gchar *tagname,
494 static void connect_mnemonics_visible_notify (GtkLabel *label);
495 static gboolean separate_uline_pattern (const gchar *str,
501 /* For selectable labels: */
502 static void gtk_label_move_cursor (GtkLabel *label,
503 GtkMovementStep step,
505 gboolean extend_selection);
506 static void gtk_label_copy_clipboard (GtkLabel *label);
507 static void gtk_label_select_all (GtkLabel *label);
508 static void gtk_label_do_popup (GtkLabel *label,
509 GdkEventButton *event);
510 static gint gtk_label_move_forward_word (GtkLabel *label,
512 static gint gtk_label_move_backward_word (GtkLabel *label,
516 static void gtk_label_rescan_links (GtkLabel *label);
517 static void gtk_label_clear_links (GtkLabel *label);
518 static gboolean gtk_label_activate_link (GtkLabel *label,
520 static void gtk_label_activate_current_link (GtkLabel *label);
521 static GtkLabelLink *gtk_label_get_current_link (GtkLabel *label);
522 static void gtk_label_get_link_colors (GtkWidget *widget,
523 GdkColor **link_color,
524 GdkColor **visited_link_color);
525 static void emit_activate_link (GtkLabel *label,
528 static GtkSizeRequestMode gtk_label_get_request_mode (GtkWidget *widget);
529 static void gtk_label_get_preferred_width (GtkWidget *widget,
532 static void gtk_label_get_preferred_height (GtkWidget *widget,
535 static void gtk_label_get_preferred_width_for_height (GtkWidget *widget,
538 gint *natural_width);
539 static void gtk_label_get_preferred_height_for_width (GtkWidget *widget,
541 gint *minimum_height,
542 gint *natural_height);
544 static GtkBuildableIface *buildable_parent_iface = NULL;
546 G_DEFINE_TYPE_WITH_CODE (GtkLabel, gtk_label, GTK_TYPE_MISC,
547 G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
548 gtk_label_buildable_interface_init))
551 add_move_binding (GtkBindingSet *binding_set,
554 GtkMovementStep step,
557 g_return_if_fail ((modmask & GDK_SHIFT_MASK) == 0);
559 gtk_binding_entry_add_signal (binding_set, keyval, modmask,
563 G_TYPE_BOOLEAN, FALSE);
565 /* Selection-extending version */
566 gtk_binding_entry_add_signal (binding_set, keyval, modmask | GDK_SHIFT_MASK,
570 G_TYPE_BOOLEAN, TRUE);
574 gtk_label_class_init (GtkLabelClass *class)
576 GObjectClass *gobject_class = G_OBJECT_CLASS (class);
577 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
578 GtkBindingSet *binding_set;
580 gobject_class->set_property = gtk_label_set_property;
581 gobject_class->get_property = gtk_label_get_property;
582 gobject_class->finalize = gtk_label_finalize;
584 widget_class->destroy = gtk_label_destroy;
585 widget_class->size_allocate = gtk_label_size_allocate;
586 widget_class->state_changed = gtk_label_state_changed;
587 widget_class->style_updated = gtk_label_style_updated;
588 widget_class->query_tooltip = gtk_label_query_tooltip;
589 widget_class->direction_changed = gtk_label_direction_changed;
590 widget_class->draw = gtk_label_draw;
591 widget_class->realize = gtk_label_realize;
592 widget_class->unrealize = gtk_label_unrealize;
593 widget_class->map = gtk_label_map;
594 widget_class->unmap = gtk_label_unmap;
595 widget_class->button_press_event = gtk_label_button_press;
596 widget_class->button_release_event = gtk_label_button_release;
597 widget_class->motion_notify_event = gtk_label_motion;
598 widget_class->leave_notify_event = gtk_label_leave_notify;
599 widget_class->hierarchy_changed = gtk_label_hierarchy_changed;
600 widget_class->screen_changed = gtk_label_screen_changed;
601 widget_class->mnemonic_activate = gtk_label_mnemonic_activate;
602 widget_class->drag_data_get = gtk_label_drag_data_get;
603 widget_class->grab_focus = gtk_label_grab_focus;
604 widget_class->popup_menu = gtk_label_popup_menu;
605 widget_class->focus = gtk_label_focus;
606 widget_class->get_request_mode = gtk_label_get_request_mode;
607 widget_class->get_preferred_width = gtk_label_get_preferred_width;
608 widget_class->get_preferred_height = gtk_label_get_preferred_height;
609 widget_class->get_preferred_width_for_height = gtk_label_get_preferred_width_for_height;
610 widget_class->get_preferred_height_for_width = gtk_label_get_preferred_height_for_width;
612 class->move_cursor = gtk_label_move_cursor;
613 class->copy_clipboard = gtk_label_copy_clipboard;
614 class->activate_link = gtk_label_activate_link;
617 * GtkLabel::move-cursor:
618 * @entry: the object which received the signal
619 * @step: the granularity of the move, as a #GtkMovementStep
620 * @count: the number of @step units to move
621 * @extend_selection: %TRUE if the move should extend the selection
623 * The ::move-cursor signal is a
624 * <link linkend="keybinding-signals">keybinding signal</link>
625 * which gets emitted when the user initiates a cursor movement.
626 * If the cursor is not visible in @entry, this signal causes
627 * the viewport to be moved instead.
629 * Applications should not connect to it, but may emit it with
630 * g_signal_emit_by_name() if they need to control the cursor
633 * The default bindings for this signal come in two variants,
634 * the variant with the Shift modifier extends the selection,
635 * the variant without the Shift modifer does not.
636 * There are too many key combinations to list them all here.
638 * <listitem>Arrow keys move by individual characters/lines</listitem>
639 * <listitem>Ctrl-arrow key combinations move by words/paragraphs</listitem>
640 * <listitem>Home/End keys move to the ends of the buffer</listitem>
643 signals[MOVE_CURSOR] =
644 g_signal_new (I_("move-cursor"),
645 G_OBJECT_CLASS_TYPE (gobject_class),
646 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
647 G_STRUCT_OFFSET (GtkLabelClass, move_cursor),
649 _gtk_marshal_VOID__ENUM_INT_BOOLEAN,
651 GTK_TYPE_MOVEMENT_STEP,
656 * GtkLabel::copy-clipboard:
657 * @label: the object which received the signal
659 * The ::copy-clipboard signal is a
660 * <link linkend="keybinding-signals">keybinding signal</link>
661 * which gets emitted to copy the selection to the clipboard.
663 * The default binding for this signal is Ctrl-c.
665 signals[COPY_CLIPBOARD] =
666 g_signal_new (I_("copy-clipboard"),
667 G_OBJECT_CLASS_TYPE (gobject_class),
668 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
669 G_STRUCT_OFFSET (GtkLabelClass, copy_clipboard),
671 _gtk_marshal_VOID__VOID,
675 * GtkLabel::populate-popup:
676 * @label: The label on which the signal is emitted
677 * @menu: the menu that is being populated
679 * The ::populate-popup signal gets emitted before showing the
680 * context menu of the label. Note that only selectable labels
681 * have context menus.
683 * If you need to add items to the context menu, connect
684 * to this signal and append your menuitems to the @menu.
686 signals[POPULATE_POPUP] =
687 g_signal_new (I_("populate-popup"),
688 G_OBJECT_CLASS_TYPE (gobject_class),
690 G_STRUCT_OFFSET (GtkLabelClass, populate_popup),
692 _gtk_marshal_VOID__OBJECT,
697 * GtkLabel::activate-current-link:
698 * @label: The label on which the signal was emitted
700 * A <link linkend="keybinding-signals">keybinding signal</link>
701 * which gets emitted when the user activates a link in the label.
703 * Applications may also emit the signal with g_signal_emit_by_name()
704 * if they need to control activation of URIs programmatically.
706 * The default bindings for this signal are all forms of the Enter key.
710 signals[ACTIVATE_CURRENT_LINK] =
711 g_signal_new_class_handler ("activate-current-link",
712 G_TYPE_FROM_CLASS (gobject_class),
713 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
714 G_CALLBACK (gtk_label_activate_current_link),
716 _gtk_marshal_VOID__VOID,
720 * GtkLabel::activate-link:
721 * @label: The label on which the signal was emitted
722 * @uri: the URI that is activated
724 * The signal which gets emitted to activate a URI.
725 * Applications may connect to it to override the default behaviour,
726 * which is to call gtk_show_uri().
728 * Returns: %TRUE if the link has been activated
732 signals[ACTIVATE_LINK] =
733 g_signal_new ("activate-link",
734 G_TYPE_FROM_CLASS (gobject_class),
736 G_STRUCT_OFFSET (GtkLabelClass, activate_link),
737 _gtk_boolean_handled_accumulator, NULL,
738 _gtk_marshal_BOOLEAN__STRING,
739 G_TYPE_BOOLEAN, 1, G_TYPE_STRING);
741 g_object_class_install_property (gobject_class,
743 g_param_spec_string ("label",
745 P_("The text of the label"),
747 GTK_PARAM_READWRITE));
748 g_object_class_install_property (gobject_class,
750 g_param_spec_boxed ("attributes",
752 P_("A list of style attributes to apply to the text of the label"),
753 PANGO_TYPE_ATTR_LIST,
754 GTK_PARAM_READWRITE));
755 g_object_class_install_property (gobject_class,
757 g_param_spec_boolean ("use-markup",
759 P_("The text of the label includes XML markup. See pango_parse_markup()"),
761 GTK_PARAM_READWRITE));
762 g_object_class_install_property (gobject_class,
764 g_param_spec_boolean ("use-underline",
766 P_("If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key"),
768 GTK_PARAM_READWRITE));
770 g_object_class_install_property (gobject_class,
772 g_param_spec_enum ("justify",
774 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"),
775 GTK_TYPE_JUSTIFICATION,
777 GTK_PARAM_READWRITE));
779 g_object_class_install_property (gobject_class,
781 g_param_spec_string ("pattern",
783 P_("A string with _ characters in positions correspond to characters in the text to underline"),
785 GTK_PARAM_WRITABLE));
787 g_object_class_install_property (gobject_class,
789 g_param_spec_boolean ("wrap",
791 P_("If set, wrap lines if the text becomes too wide"),
793 GTK_PARAM_READWRITE));
795 * GtkLabel:wrap-mode:
797 * If line wrapping is on (see the #GtkLabel:wrap property) this controls
798 * how the line wrapping is done. The default is %PANGO_WRAP_WORD, which
799 * means wrap on word boundaries.
803 g_object_class_install_property (gobject_class,
805 g_param_spec_enum ("wrap-mode",
806 P_("Line wrap mode"),
807 P_("If wrap is set, controls how linewrapping is done"),
808 PANGO_TYPE_WRAP_MODE,
810 GTK_PARAM_READWRITE));
811 g_object_class_install_property (gobject_class,
813 g_param_spec_boolean ("selectable",
815 P_("Whether the label text can be selected with the mouse"),
817 GTK_PARAM_READWRITE));
818 g_object_class_install_property (gobject_class,
819 PROP_MNEMONIC_KEYVAL,
820 g_param_spec_uint ("mnemonic-keyval",
822 P_("The mnemonic accelerator key for this label"),
826 GTK_PARAM_READABLE));
827 g_object_class_install_property (gobject_class,
828 PROP_MNEMONIC_WIDGET,
829 g_param_spec_object ("mnemonic-widget",
830 P_("Mnemonic widget"),
831 P_("The widget to be activated when the label's mnemonic "
834 GTK_PARAM_READWRITE));
836 g_object_class_install_property (gobject_class,
837 PROP_CURSOR_POSITION,
838 g_param_spec_int ("cursor-position",
839 P_("Cursor Position"),
840 P_("The current position of the insertion cursor in chars"),
844 GTK_PARAM_READABLE));
846 g_object_class_install_property (gobject_class,
847 PROP_SELECTION_BOUND,
848 g_param_spec_int ("selection-bound",
849 P_("Selection Bound"),
850 P_("The position of the opposite end of the selection from the cursor in chars"),
854 GTK_PARAM_READABLE));
857 * GtkLabel:ellipsize:
859 * The preferred place to ellipsize the string, if the label does
860 * not have enough room to display the entire string, specified as a
861 * #PangoEllisizeMode.
863 * Note that setting this property to a value other than
864 * %PANGO_ELLIPSIZE_NONE has the side-effect that the label requests
865 * only enough space to display the ellipsis "...". In particular, this
866 * means that ellipsizing labels do not work well in notebook tabs, unless
867 * the tab's #GtkNotebook:tab-expand property is set to %TRUE. Other ways
868 * to set a label's width are gtk_widget_set_size_request() and
869 * gtk_label_set_width_chars().
873 g_object_class_install_property (gobject_class,
875 g_param_spec_enum ("ellipsize",
877 P_("The preferred place to ellipsize the string, if the label does not have enough room to display the entire string"),
878 PANGO_TYPE_ELLIPSIZE_MODE,
879 PANGO_ELLIPSIZE_NONE,
880 GTK_PARAM_READWRITE));
883 * GtkLabel:width-chars:
885 * The desired width of the label, in characters. If this property is set to
886 * -1, the width will be calculated automatically.
888 * See the section on <link linkend="label-text-layout">text layout</link>
889 * for details of how #GtkLabel:width-chars and #GtkLabel:max-width-chars
890 * determine the width of ellipsized and wrapped labels.
894 g_object_class_install_property (gobject_class,
896 g_param_spec_int ("width-chars",
897 P_("Width In Characters"),
898 P_("The desired width of the label, in characters"),
902 GTK_PARAM_READWRITE));
905 * GtkLabel:single-line-mode:
907 * Whether the label is in single line mode. In single line mode,
908 * the height of the label does not depend on the actual text, it
909 * is always set to ascent + descent of the font. This can be an
910 * advantage in situations where resizing the label because of text
911 * changes would be distracting, e.g. in a statusbar.
915 g_object_class_install_property (gobject_class,
916 PROP_SINGLE_LINE_MODE,
917 g_param_spec_boolean ("single-line-mode",
918 P_("Single Line Mode"),
919 P_("Whether the label is in single line mode"),
921 GTK_PARAM_READWRITE));
926 * The angle that the baseline of the label makes with the horizontal,
927 * in degrees, measured counterclockwise. An angle of 90 reads from
928 * from bottom to top, an angle of 270, from top to bottom. Ignored
929 * if the label is selectable, wrapped, or ellipsized.
933 g_object_class_install_property (gobject_class,
935 g_param_spec_double ("angle",
937 P_("Angle at which the label is rotated"),
941 GTK_PARAM_READWRITE));
944 * GtkLabel:max-width-chars:
946 * The desired maximum width of the label, in characters. If this property
947 * is set to -1, the width will be calculated automatically.
949 * See the section on <link linkend="label-text-layout">text layout</link>
950 * for details of how #GtkLabel:width-chars and #GtkLabel:max-width-chars
951 * determine the width of ellipsized and wrapped labels.
955 g_object_class_install_property (gobject_class,
956 PROP_MAX_WIDTH_CHARS,
957 g_param_spec_int ("max-width-chars",
958 P_("Maximum Width In Characters"),
959 P_("The desired maximum width of the label, in characters"),
963 GTK_PARAM_READWRITE));
966 * GtkLabel:track-visited-links:
968 * Set this property to %TRUE to make the label track which links
969 * have been clicked. It will then apply the ::visited-link-color
970 * color, instead of ::link-color.
974 g_object_class_install_property (gobject_class,
975 PROP_TRACK_VISITED_LINKS,
976 g_param_spec_boolean ("track-visited-links",
977 P_("Track visited links"),
978 P_("Whether visited links should be tracked"),
980 GTK_PARAM_READWRITE));
985 binding_set = gtk_binding_set_by_class (class);
987 /* Moving the insertion point */
988 add_move_binding (binding_set, GDK_KEY_Right, 0,
989 GTK_MOVEMENT_VISUAL_POSITIONS, 1);
991 add_move_binding (binding_set, GDK_KEY_Left, 0,
992 GTK_MOVEMENT_VISUAL_POSITIONS, -1);
994 add_move_binding (binding_set, GDK_KEY_KP_Right, 0,
995 GTK_MOVEMENT_VISUAL_POSITIONS, 1);
997 add_move_binding (binding_set, GDK_KEY_KP_Left, 0,
998 GTK_MOVEMENT_VISUAL_POSITIONS, -1);
1000 add_move_binding (binding_set, GDK_KEY_f, GDK_CONTROL_MASK,
1001 GTK_MOVEMENT_LOGICAL_POSITIONS, 1);
1003 add_move_binding (binding_set, GDK_KEY_b, GDK_CONTROL_MASK,
1004 GTK_MOVEMENT_LOGICAL_POSITIONS, -1);
1006 add_move_binding (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
1007 GTK_MOVEMENT_WORDS, 1);
1009 add_move_binding (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
1010 GTK_MOVEMENT_WORDS, -1);
1012 add_move_binding (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
1013 GTK_MOVEMENT_WORDS, 1);
1015 add_move_binding (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1016 GTK_MOVEMENT_WORDS, -1);
1019 gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
1021 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1023 G_TYPE_BOOLEAN, FALSE);
1025 gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
1027 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1029 G_TYPE_BOOLEAN, TRUE);
1031 gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK,
1033 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1035 G_TYPE_BOOLEAN, FALSE);
1037 gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK,
1039 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1041 G_TYPE_BOOLEAN, TRUE);
1044 gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
1046 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1048 G_TYPE_BOOLEAN, FALSE);
1050 gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK,
1052 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1054 G_TYPE_BOOLEAN, FALSE);
1056 add_move_binding (binding_set, GDK_KEY_f, GDK_MOD1_MASK,
1057 GTK_MOVEMENT_WORDS, 1);
1059 add_move_binding (binding_set, GDK_KEY_b, GDK_MOD1_MASK,
1060 GTK_MOVEMENT_WORDS, -1);
1062 add_move_binding (binding_set, GDK_KEY_Home, 0,
1063 GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
1065 add_move_binding (binding_set, GDK_KEY_End, 0,
1066 GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
1068 add_move_binding (binding_set, GDK_KEY_KP_Home, 0,
1069 GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
1071 add_move_binding (binding_set, GDK_KEY_KP_End, 0,
1072 GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
1074 add_move_binding (binding_set, GDK_KEY_Home, GDK_CONTROL_MASK,
1075 GTK_MOVEMENT_BUFFER_ENDS, -1);
1077 add_move_binding (binding_set, GDK_KEY_End, GDK_CONTROL_MASK,
1078 GTK_MOVEMENT_BUFFER_ENDS, 1);
1080 add_move_binding (binding_set, GDK_KEY_KP_Home, GDK_CONTROL_MASK,
1081 GTK_MOVEMENT_BUFFER_ENDS, -1);
1083 add_move_binding (binding_set, GDK_KEY_KP_End, GDK_CONTROL_MASK,
1084 GTK_MOVEMENT_BUFFER_ENDS, 1);
1087 gtk_binding_entry_add_signal (binding_set, GDK_KEY_c, GDK_CONTROL_MASK,
1088 "copy-clipboard", 0);
1090 gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0,
1091 "activate-current-link", 0);
1092 gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0,
1093 "activate-current-link", 0);
1094 gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0,
1095 "activate-current-link", 0);
1097 g_type_class_add_private (class, sizeof (GtkLabelPrivate));
1101 gtk_label_set_property (GObject *object,
1103 const GValue *value,
1106 GtkLabel *label = GTK_LABEL (object);
1111 gtk_label_set_label (label, g_value_get_string (value));
1113 case PROP_ATTRIBUTES:
1114 gtk_label_set_attributes (label, g_value_get_boxed (value));
1116 case PROP_USE_MARKUP:
1117 gtk_label_set_use_markup (label, g_value_get_boolean (value));
1119 case PROP_USE_UNDERLINE:
1120 gtk_label_set_use_underline (label, g_value_get_boolean (value));
1123 gtk_label_set_justify (label, g_value_get_enum (value));
1126 gtk_label_set_pattern (label, g_value_get_string (value));
1129 gtk_label_set_line_wrap (label, g_value_get_boolean (value));
1131 case PROP_WRAP_MODE:
1132 gtk_label_set_line_wrap_mode (label, g_value_get_enum (value));
1134 case PROP_SELECTABLE:
1135 gtk_label_set_selectable (label, g_value_get_boolean (value));
1137 case PROP_MNEMONIC_WIDGET:
1138 gtk_label_set_mnemonic_widget (label, (GtkWidget*) g_value_get_object (value));
1140 case PROP_ELLIPSIZE:
1141 gtk_label_set_ellipsize (label, g_value_get_enum (value));
1143 case PROP_WIDTH_CHARS:
1144 gtk_label_set_width_chars (label, g_value_get_int (value));
1146 case PROP_SINGLE_LINE_MODE:
1147 gtk_label_set_single_line_mode (label, g_value_get_boolean (value));
1150 gtk_label_set_angle (label, g_value_get_double (value));
1152 case PROP_MAX_WIDTH_CHARS:
1153 gtk_label_set_max_width_chars (label, g_value_get_int (value));
1155 case PROP_TRACK_VISITED_LINKS:
1156 gtk_label_set_track_visited_links (label, g_value_get_boolean (value));
1159 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1165 gtk_label_get_property (GObject *object,
1170 GtkLabel *label = GTK_LABEL (object);
1171 GtkLabelPrivate *priv = label->priv;
1176 g_value_set_string (value, priv->label);
1178 case PROP_ATTRIBUTES:
1179 g_value_set_boxed (value, priv->attrs);
1181 case PROP_USE_MARKUP:
1182 g_value_set_boolean (value, priv->use_markup);
1184 case PROP_USE_UNDERLINE:
1185 g_value_set_boolean (value, priv->use_underline);
1188 g_value_set_enum (value, priv->jtype);
1191 g_value_set_boolean (value, priv->wrap);
1193 case PROP_WRAP_MODE:
1194 g_value_set_enum (value, priv->wrap_mode);
1196 case PROP_SELECTABLE:
1197 g_value_set_boolean (value, gtk_label_get_selectable (label));
1199 case PROP_MNEMONIC_KEYVAL:
1200 g_value_set_uint (value, priv->mnemonic_keyval);
1202 case PROP_MNEMONIC_WIDGET:
1203 g_value_set_object (value, (GObject*) priv->mnemonic_widget);
1205 case PROP_CURSOR_POSITION:
1206 if (priv->select_info && priv->select_info->selectable)
1208 gint offset = g_utf8_pointer_to_offset (priv->text,
1209 priv->text + priv->select_info->selection_end);
1210 g_value_set_int (value, offset);
1213 g_value_set_int (value, 0);
1215 case PROP_SELECTION_BOUND:
1216 if (priv->select_info && priv->select_info->selectable)
1218 gint offset = g_utf8_pointer_to_offset (priv->text,
1219 priv->text + priv->select_info->selection_anchor);
1220 g_value_set_int (value, offset);
1223 g_value_set_int (value, 0);
1225 case PROP_ELLIPSIZE:
1226 g_value_set_enum (value, priv->ellipsize);
1228 case PROP_WIDTH_CHARS:
1229 g_value_set_int (value, gtk_label_get_width_chars (label));
1231 case PROP_SINGLE_LINE_MODE:
1232 g_value_set_boolean (value, gtk_label_get_single_line_mode (label));
1235 g_value_set_double (value, gtk_label_get_angle (label));
1237 case PROP_MAX_WIDTH_CHARS:
1238 g_value_set_int (value, gtk_label_get_max_width_chars (label));
1240 case PROP_TRACK_VISITED_LINKS:
1241 g_value_set_boolean (value, gtk_label_get_track_visited_links (label));
1244 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1250 gtk_label_init (GtkLabel *label)
1252 GtkLabelPrivate *priv;
1254 label->priv = G_TYPE_INSTANCE_GET_PRIVATE (label,
1259 gtk_widget_set_has_window (GTK_WIDGET (label), FALSE);
1261 priv->width_chars = -1;
1262 priv->max_width_chars = -1;
1263 priv->wrap_width = -1;
1266 priv->jtype = GTK_JUSTIFY_LEFT;
1268 priv->wrap_mode = PANGO_WRAP_WORD;
1269 priv->ellipsize = PANGO_ELLIPSIZE_NONE;
1271 priv->use_underline = FALSE;
1272 priv->use_markup = FALSE;
1273 priv->pattern_set = FALSE;
1274 priv->track_links = TRUE;
1276 priv->mnemonic_keyval = GDK_KEY_VoidSymbol;
1277 priv->layout = NULL;
1281 priv->mnemonic_widget = NULL;
1282 priv->mnemonic_window = NULL;
1284 priv->mnemonics_visible = TRUE;
1286 gtk_label_set_text (label, "");
1291 gtk_label_buildable_interface_init (GtkBuildableIface *iface)
1293 buildable_parent_iface = g_type_interface_peek_parent (iface);
1295 iface->custom_tag_start = gtk_label_buildable_custom_tag_start;
1296 iface->custom_finished = gtk_label_buildable_custom_finished;
1300 GtkBuilder *builder;
1302 PangoAttrList *attrs;
1305 static PangoAttribute *
1306 attribute_from_text (GtkBuilder *builder,
1311 PangoAttribute *attribute = NULL;
1313 PangoLanguage *language;
1314 PangoFontDescription *font_desc;
1316 GValue val = { 0, };
1318 if (!gtk_builder_value_from_string_type (builder, PANGO_TYPE_ATTR_TYPE, name, &val, error))
1321 type = g_value_get_enum (&val);
1322 g_value_unset (&val);
1326 /* PangoAttrLanguage */
1327 case PANGO_ATTR_LANGUAGE:
1328 if ((language = pango_language_from_string (value)))
1330 attribute = pango_attr_language_new (language);
1331 g_value_init (&val, G_TYPE_INT);
1335 case PANGO_ATTR_STYLE:
1336 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_STYLE, value, &val, error))
1337 attribute = pango_attr_style_new (g_value_get_enum (&val));
1339 case PANGO_ATTR_WEIGHT:
1340 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_WEIGHT, value, &val, error))
1341 attribute = pango_attr_weight_new (g_value_get_enum (&val));
1343 case PANGO_ATTR_VARIANT:
1344 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_VARIANT, value, &val, error))
1345 attribute = pango_attr_variant_new (g_value_get_enum (&val));
1347 case PANGO_ATTR_STRETCH:
1348 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_STRETCH, value, &val, error))
1349 attribute = pango_attr_stretch_new (g_value_get_enum (&val));
1351 case PANGO_ATTR_UNDERLINE:
1352 if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
1353 attribute = pango_attr_underline_new (g_value_get_boolean (&val));
1355 case PANGO_ATTR_STRIKETHROUGH:
1356 if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
1357 attribute = pango_attr_strikethrough_new (g_value_get_boolean (&val));
1359 case PANGO_ATTR_GRAVITY:
1360 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_GRAVITY, value, &val, error))
1361 attribute = pango_attr_gravity_new (g_value_get_enum (&val));
1363 case PANGO_ATTR_GRAVITY_HINT:
1364 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_GRAVITY_HINT,
1365 value, &val, error))
1366 attribute = pango_attr_gravity_hint_new (g_value_get_enum (&val));
1368 /* PangoAttrString */
1369 case PANGO_ATTR_FAMILY:
1370 attribute = pango_attr_family_new (value);
1371 g_value_init (&val, G_TYPE_INT);
1375 case PANGO_ATTR_SIZE:
1376 if (gtk_builder_value_from_string_type (builder, G_TYPE_INT,
1377 value, &val, error))
1378 attribute = pango_attr_size_new (g_value_get_int (&val));
1380 case PANGO_ATTR_ABSOLUTE_SIZE:
1381 if (gtk_builder_value_from_string_type (builder, G_TYPE_INT,
1382 value, &val, error))
1383 attribute = pango_attr_size_new_absolute (g_value_get_int (&val));
1386 /* PangoAttrFontDesc */
1387 case PANGO_ATTR_FONT_DESC:
1388 if ((font_desc = pango_font_description_from_string (value)))
1390 attribute = pango_attr_font_desc_new (font_desc);
1391 pango_font_description_free (font_desc);
1392 g_value_init (&val, G_TYPE_INT);
1396 /* PangoAttrColor */
1397 case PANGO_ATTR_FOREGROUND:
1398 if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
1399 value, &val, error))
1401 color = g_value_get_boxed (&val);
1402 attribute = pango_attr_foreground_new (color->red, color->green, color->blue);
1405 case PANGO_ATTR_BACKGROUND:
1406 if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
1407 value, &val, error))
1409 color = g_value_get_boxed (&val);
1410 attribute = pango_attr_background_new (color->red, color->green, color->blue);
1413 case PANGO_ATTR_UNDERLINE_COLOR:
1414 if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
1415 value, &val, error))
1417 color = g_value_get_boxed (&val);
1418 attribute = pango_attr_underline_color_new (color->red, color->green, color->blue);
1421 case PANGO_ATTR_STRIKETHROUGH_COLOR:
1422 if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
1423 value, &val, error))
1425 color = g_value_get_boxed (&val);
1426 attribute = pango_attr_strikethrough_color_new (color->red, color->green, color->blue);
1430 /* PangoAttrShape */
1431 case PANGO_ATTR_SHAPE:
1432 /* Unsupported for now */
1434 /* PangoAttrFloat */
1435 case PANGO_ATTR_SCALE:
1436 if (gtk_builder_value_from_string_type (builder, G_TYPE_DOUBLE,
1437 value, &val, error))
1438 attribute = pango_attr_scale_new (g_value_get_double (&val));
1441 case PANGO_ATTR_INVALID:
1442 case PANGO_ATTR_LETTER_SPACING:
1443 case PANGO_ATTR_RISE:
1444 case PANGO_ATTR_FALLBACK:
1449 g_value_unset (&val);
1456 pango_start_element (GMarkupParseContext *context,
1457 const gchar *element_name,
1458 const gchar **names,
1459 const gchar **values,
1463 PangoParserData *data = (PangoParserData*)user_data;
1464 GValue val = { 0, };
1466 gint line_number, char_number;
1468 if (strcmp (element_name, "attribute") == 0)
1470 PangoAttribute *attr = NULL;
1471 const gchar *name = NULL;
1472 const gchar *value = NULL;
1473 const gchar *start = NULL;
1474 const gchar *end = NULL;
1475 guint start_val = 0;
1476 guint end_val = G_MAXUINT;
1478 for (i = 0; names[i]; i++)
1480 if (strcmp (names[i], "name") == 0)
1482 else if (strcmp (names[i], "value") == 0)
1484 else if (strcmp (names[i], "start") == 0)
1486 else if (strcmp (names[i], "end") == 0)
1490 g_markup_parse_context_get_position (context,
1495 GTK_BUILDER_ERROR_INVALID_ATTRIBUTE,
1496 "%s:%d:%d '%s' is not a valid attribute of <%s>",
1498 line_number, char_number, names[i], "attribute");
1503 if (!name || !value)
1505 g_markup_parse_context_get_position (context,
1510 GTK_BUILDER_ERROR_MISSING_ATTRIBUTE,
1511 "%s:%d:%d <%s> requires attribute \"%s\"",
1513 line_number, char_number, "attribute",
1514 name ? "value" : "name");
1520 if (!gtk_builder_value_from_string_type (data->builder, G_TYPE_UINT,
1521 start, &val, error))
1523 start_val = g_value_get_uint (&val);
1524 g_value_unset (&val);
1529 if (!gtk_builder_value_from_string_type (data->builder, G_TYPE_UINT,
1532 end_val = g_value_get_uint (&val);
1533 g_value_unset (&val);
1536 attr = attribute_from_text (data->builder, name, value, error);
1537 attr->start_index = start_val;
1538 attr->end_index = end_val;
1543 data->attrs = pango_attr_list_new ();
1545 pango_attr_list_insert (data->attrs, attr);
1548 else if (strcmp (element_name, "attributes") == 0)
1551 g_warning ("Unsupported tag for GtkLabel: %s\n", element_name);
1554 static const GMarkupParser pango_parser =
1556 pango_start_element,
1560 gtk_label_buildable_custom_tag_start (GtkBuildable *buildable,
1561 GtkBuilder *builder,
1563 const gchar *tagname,
1564 GMarkupParser *parser,
1567 if (buildable_parent_iface->custom_tag_start (buildable, builder, child,
1568 tagname, parser, data))
1571 if (strcmp (tagname, "attributes") == 0)
1573 PangoParserData *parser_data;
1575 parser_data = g_slice_new0 (PangoParserData);
1576 parser_data->builder = g_object_ref (builder);
1577 parser_data->object = g_object_ref (buildable);
1578 *parser = pango_parser;
1579 *data = parser_data;
1586 gtk_label_buildable_custom_finished (GtkBuildable *buildable,
1587 GtkBuilder *builder,
1589 const gchar *tagname,
1592 PangoParserData *data;
1594 buildable_parent_iface->custom_finished (buildable, builder, child,
1595 tagname, user_data);
1597 if (strcmp (tagname, "attributes") == 0)
1599 data = (PangoParserData*)user_data;
1603 gtk_label_set_attributes (GTK_LABEL (buildable), data->attrs);
1604 pango_attr_list_unref (data->attrs);
1607 g_object_unref (data->object);
1608 g_object_unref (data->builder);
1609 g_slice_free (PangoParserData, data);
1616 * @str: The text of the label
1618 * Creates a new label with the given text inside it. You can
1619 * pass %NULL to get an empty label widget.
1621 * Return value: the new #GtkLabel
1624 gtk_label_new (const gchar *str)
1628 label = g_object_new (GTK_TYPE_LABEL, NULL);
1631 gtk_label_set_text (label, str);
1633 return GTK_WIDGET (label);
1637 * gtk_label_new_with_mnemonic:
1638 * @str: The text of the label, with an underscore in front of the
1639 * mnemonic character
1641 * Creates a new #GtkLabel, containing the text in @str.
1643 * If characters in @str are preceded by an underscore, they are
1644 * underlined. If you need a literal underscore character in a label, use
1645 * '__' (two underscores). The first underlined character represents a
1646 * keyboard accelerator called a mnemonic. The mnemonic key can be used
1647 * to activate another widget, chosen automatically, or explicitly using
1648 * gtk_label_set_mnemonic_widget().
1650 * If gtk_label_set_mnemonic_widget() is not called, then the first
1651 * activatable ancestor of the #GtkLabel will be chosen as the mnemonic
1652 * widget. For instance, if the label is inside a button or menu item,
1653 * the button or menu item will automatically become the mnemonic widget
1654 * and be activated by the mnemonic.
1656 * Return value: the new #GtkLabel
1659 gtk_label_new_with_mnemonic (const gchar *str)
1663 label = g_object_new (GTK_TYPE_LABEL, NULL);
1666 gtk_label_set_text_with_mnemonic (label, str);
1668 return GTK_WIDGET (label);
1672 gtk_label_mnemonic_activate (GtkWidget *widget,
1673 gboolean group_cycling)
1675 GtkLabel *label = GTK_LABEL (widget);
1676 GtkLabelPrivate *priv = label->priv;
1679 if (priv->mnemonic_widget)
1680 return gtk_widget_mnemonic_activate (priv->mnemonic_widget, group_cycling);
1682 /* Try to find the widget to activate by traversing the
1683 * widget's ancestry.
1685 parent = gtk_widget_get_parent (widget);
1687 if (GTK_IS_NOTEBOOK (parent))
1692 if (gtk_widget_get_can_focus (parent) ||
1693 (!group_cycling && GTK_WIDGET_GET_CLASS (parent)->activate_signal) ||
1694 GTK_IS_NOTEBOOK (gtk_widget_get_parent (parent)) ||
1695 GTK_IS_MENU_ITEM (parent))
1696 return gtk_widget_mnemonic_activate (parent, group_cycling);
1697 parent = gtk_widget_get_parent (parent);
1700 /* barf if there was nothing to activate */
1701 g_warning ("Couldn't find a target for a mnemonic activation.");
1702 gtk_widget_error_bell (widget);
1708 gtk_label_setup_mnemonic (GtkLabel *label,
1711 GtkLabelPrivate *priv = label->priv;
1712 GtkWidget *widget = GTK_WIDGET (label);
1713 GtkWidget *toplevel;
1714 GtkWidget *mnemonic_menu;
1716 mnemonic_menu = g_object_get_data (G_OBJECT (label), "gtk-mnemonic-menu");
1718 if (last_key != GDK_KEY_VoidSymbol)
1720 if (priv->mnemonic_window)
1722 gtk_window_remove_mnemonic (priv->mnemonic_window,
1725 priv->mnemonic_window = NULL;
1729 _gtk_menu_shell_remove_mnemonic (GTK_MENU_SHELL (mnemonic_menu),
1732 mnemonic_menu = NULL;
1736 if (priv->mnemonic_keyval == GDK_KEY_VoidSymbol)
1739 connect_mnemonics_visible_notify (GTK_LABEL (widget));
1741 toplevel = gtk_widget_get_toplevel (widget);
1742 if (gtk_widget_is_toplevel (toplevel))
1744 GtkWidget *menu_shell;
1746 menu_shell = gtk_widget_get_ancestor (widget,
1747 GTK_TYPE_MENU_SHELL);
1751 _gtk_menu_shell_add_mnemonic (GTK_MENU_SHELL (menu_shell),
1752 priv->mnemonic_keyval,
1754 mnemonic_menu = menu_shell;
1757 if (!GTK_IS_MENU (menu_shell))
1759 gtk_window_add_mnemonic (GTK_WINDOW (toplevel),
1760 priv->mnemonic_keyval,
1762 priv->mnemonic_window = GTK_WINDOW (toplevel);
1767 g_object_set_data (G_OBJECT (label), I_("gtk-mnemonic-menu"), mnemonic_menu);
1771 gtk_label_hierarchy_changed (GtkWidget *widget,
1772 GtkWidget *old_toplevel)
1774 GtkLabel *label = GTK_LABEL (widget);
1775 GtkLabelPrivate *priv = label->priv;
1777 gtk_label_setup_mnemonic (label, priv->mnemonic_keyval);
1781 label_shortcut_setting_apply (GtkLabel *label)
1783 gtk_label_recalculate (label);
1784 if (GTK_IS_ACCEL_LABEL (label))
1785 gtk_accel_label_refetch (GTK_ACCEL_LABEL (label));
1789 label_shortcut_setting_traverse_container (GtkWidget *widget,
1792 if (GTK_IS_LABEL (widget))
1793 label_shortcut_setting_apply (GTK_LABEL (widget));
1794 else if (GTK_IS_CONTAINER (widget))
1795 gtk_container_forall (GTK_CONTAINER (widget),
1796 label_shortcut_setting_traverse_container, data);
1800 label_shortcut_setting_changed (GtkSettings *settings)
1804 list = gtk_window_list_toplevels ();
1806 for (l = list; l ; l = l->next)
1808 GtkWidget *widget = l->data;
1810 if (gtk_widget_get_settings (widget) == settings)
1811 gtk_container_forall (GTK_CONTAINER (widget),
1812 label_shortcut_setting_traverse_container, NULL);
1819 mnemonics_visible_apply (GtkWidget *widget,
1820 gboolean mnemonics_visible)
1822 GtkLabel *label = GTK_LABEL (widget);
1823 GtkLabelPrivate *priv = label->priv;
1825 mnemonics_visible = mnemonics_visible != FALSE;
1827 if (priv->mnemonics_visible != mnemonics_visible)
1829 priv->mnemonics_visible = mnemonics_visible;
1831 gtk_label_recalculate (label);
1836 label_mnemonics_visible_traverse_container (GtkWidget *widget,
1839 gboolean mnemonics_visible = GPOINTER_TO_INT (data);
1841 _gtk_label_mnemonics_visible_apply_recursively (widget, mnemonics_visible);
1845 _gtk_label_mnemonics_visible_apply_recursively (GtkWidget *widget,
1846 gboolean mnemonics_visible)
1848 if (GTK_IS_LABEL (widget))
1849 mnemonics_visible_apply (widget, mnemonics_visible);
1850 else if (GTK_IS_CONTAINER (widget))
1851 gtk_container_forall (GTK_CONTAINER (widget),
1852 label_mnemonics_visible_traverse_container,
1853 GINT_TO_POINTER (mnemonics_visible));
1857 label_mnemonics_visible_changed (GtkWindow *window,
1861 gboolean mnemonics_visible;
1863 g_object_get (window, "mnemonics-visible", &mnemonics_visible, NULL);
1865 gtk_container_forall (GTK_CONTAINER (window),
1866 label_mnemonics_visible_traverse_container,
1867 GINT_TO_POINTER (mnemonics_visible));
1871 gtk_label_screen_changed (GtkWidget *widget,
1872 GdkScreen *old_screen)
1874 GtkSettings *settings;
1875 gboolean shortcuts_connected;
1877 if (!gtk_widget_has_screen (widget))
1880 settings = gtk_widget_get_settings (widget);
1882 shortcuts_connected =
1883 GPOINTER_TO_INT (g_object_get_data (G_OBJECT (settings),
1884 "gtk-label-shortcuts-connected"));
1886 if (! shortcuts_connected)
1888 g_signal_connect (settings, "notify::gtk-enable-mnemonics",
1889 G_CALLBACK (label_shortcut_setting_changed),
1891 g_signal_connect (settings, "notify::gtk-enable-accels",
1892 G_CALLBACK (label_shortcut_setting_changed),
1895 g_object_set_data (G_OBJECT (settings), "gtk-label-shortcuts-connected",
1896 GINT_TO_POINTER (TRUE));
1899 label_shortcut_setting_apply (GTK_LABEL (widget));
1904 label_mnemonic_widget_weak_notify (gpointer data,
1905 GObject *where_the_object_was)
1907 GtkLabel *label = data;
1908 GtkLabelPrivate *priv = label->priv;
1910 priv->mnemonic_widget = NULL;
1911 g_object_notify (G_OBJECT (label), "mnemonic-widget");
1915 * gtk_label_set_mnemonic_widget:
1916 * @label: a #GtkLabel
1917 * @widget: (allow-none): the target #GtkWidget
1919 * If the label has been set so that it has an mnemonic key (using
1920 * i.e. gtk_label_set_markup_with_mnemonic(),
1921 * gtk_label_set_text_with_mnemonic(), gtk_label_new_with_mnemonic()
1922 * or the "use_underline" property) the label can be associated with a
1923 * widget that is the target of the mnemonic. When the label is inside
1924 * a widget (like a #GtkButton or a #GtkNotebook tab) it is
1925 * automatically associated with the correct widget, but sometimes
1926 * (i.e. when the target is a #GtkEntry next to the label) you need to
1927 * set it explicitly using this function.
1929 * The target widget will be accelerated by emitting the
1930 * GtkWidget::mnemonic-activate signal on it. The default handler for
1931 * this signal will activate the widget if there are no mnemonic collisions
1932 * and toggle focus between the colliding widgets otherwise.
1935 gtk_label_set_mnemonic_widget (GtkLabel *label,
1938 GtkLabelPrivate *priv;
1940 g_return_if_fail (GTK_IS_LABEL (label));
1945 g_return_if_fail (GTK_IS_WIDGET (widget));
1947 if (priv->mnemonic_widget)
1949 gtk_widget_remove_mnemonic_label (priv->mnemonic_widget, GTK_WIDGET (label));
1950 g_object_weak_unref (G_OBJECT (priv->mnemonic_widget),
1951 label_mnemonic_widget_weak_notify,
1954 priv->mnemonic_widget = widget;
1955 if (priv->mnemonic_widget)
1957 g_object_weak_ref (G_OBJECT (priv->mnemonic_widget),
1958 label_mnemonic_widget_weak_notify,
1960 gtk_widget_add_mnemonic_label (priv->mnemonic_widget, GTK_WIDGET (label));
1963 g_object_notify (G_OBJECT (label), "mnemonic-widget");
1967 * gtk_label_get_mnemonic_widget:
1968 * @label: a #GtkLabel
1970 * Retrieves the target of the mnemonic (keyboard shortcut) of this
1971 * label. See gtk_label_set_mnemonic_widget().
1973 * Return value: (transfer none): the target of the label's mnemonic,
1974 * or %NULL if none has been set and the default algorithm will be used.
1977 gtk_label_get_mnemonic_widget (GtkLabel *label)
1979 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
1981 return label->priv->mnemonic_widget;
1985 * gtk_label_get_mnemonic_keyval:
1986 * @label: a #GtkLabel
1988 * If the label has been set so that it has an mnemonic key this function
1989 * returns the keyval used for the mnemonic accelerator. If there is no
1990 * mnemonic set up it returns #GDK_VoidSymbol.
1992 * Returns: GDK keyval usable for accelerators, or #GDK_VoidSymbol
1995 gtk_label_get_mnemonic_keyval (GtkLabel *label)
1997 g_return_val_if_fail (GTK_IS_LABEL (label), GDK_KEY_VoidSymbol);
1999 return label->priv->mnemonic_keyval;
2003 gtk_label_set_text_internal (GtkLabel *label,
2006 GtkLabelPrivate *priv = label->priv;
2008 g_free (priv->text);
2012 gtk_label_select_region_index (label, 0, 0);
2016 gtk_label_set_label_internal (GtkLabel *label,
2019 GtkLabelPrivate *priv = label->priv;
2021 g_free (priv->label);
2025 g_object_notify (G_OBJECT (label), "label");
2029 gtk_label_set_use_markup_internal (GtkLabel *label,
2032 GtkLabelPrivate *priv = label->priv;
2035 if (priv->use_markup != val)
2037 priv->use_markup = val;
2039 g_object_notify (G_OBJECT (label), "use-markup");
2044 gtk_label_set_use_underline_internal (GtkLabel *label,
2047 GtkLabelPrivate *priv = label->priv;
2050 if (priv->use_underline != val)
2052 priv->use_underline = val;
2054 g_object_notify (G_OBJECT (label), "use-underline");
2059 gtk_label_compose_effective_attrs (GtkLabel *label)
2061 GtkLabelPrivate *priv = label->priv;
2062 PangoAttrIterator *iter;
2063 PangoAttribute *attr;
2064 GSList *iter_attrs, *l;
2068 if (priv->effective_attrs)
2070 if ((iter = pango_attr_list_get_iterator (priv->attrs)))
2074 iter_attrs = pango_attr_iterator_get_attrs (iter);
2075 for (l = iter_attrs; l; l = l->next)
2078 pango_attr_list_insert (priv->effective_attrs, attr);
2080 g_slist_free (iter_attrs);
2082 while (pango_attr_iterator_next (iter));
2083 pango_attr_iterator_destroy (iter);
2087 priv->effective_attrs =
2088 pango_attr_list_ref (priv->attrs);
2093 gtk_label_set_attributes_internal (GtkLabel *label,
2094 PangoAttrList *attrs)
2096 GtkLabelPrivate *priv = label->priv;
2099 pango_attr_list_ref (attrs);
2102 pango_attr_list_unref (priv->attrs);
2103 priv->attrs = attrs;
2105 g_object_notify (G_OBJECT (label), "attributes");
2109 /* Calculates text, attrs and mnemonic_keyval from
2110 * label, use_underline and use_markup
2113 gtk_label_recalculate (GtkLabel *label)
2115 GtkLabelPrivate *priv = label->priv;
2116 guint keyval = priv->mnemonic_keyval;
2118 if (priv->use_markup)
2119 gtk_label_set_markup_internal (label, priv->label, priv->use_underline);
2122 if (priv->use_underline)
2123 gtk_label_set_uline_text_internal (label, priv->label);
2126 if (priv->effective_attrs)
2127 pango_attr_list_unref (priv->effective_attrs);
2128 priv->effective_attrs = NULL;
2129 gtk_label_set_text_internal (label, g_strdup (priv->label));
2133 gtk_label_compose_effective_attrs (label);
2135 if (!priv->use_underline)
2136 priv->mnemonic_keyval = GDK_KEY_VoidSymbol;
2138 if (keyval != priv->mnemonic_keyval)
2140 gtk_label_setup_mnemonic (label, keyval);
2141 g_object_notify (G_OBJECT (label), "mnemonic-keyval");
2144 gtk_label_clear_layout (label);
2145 gtk_label_clear_select_info (label);
2146 gtk_widget_queue_resize (GTK_WIDGET (label));
2150 * gtk_label_set_text:
2151 * @label: a #GtkLabel
2152 * @str: The text you want to set
2154 * Sets the text within the #GtkLabel widget. It overwrites any text that
2157 * This will also clear any previously set mnemonic accelerators.
2160 gtk_label_set_text (GtkLabel *label,
2163 g_return_if_fail (GTK_IS_LABEL (label));
2165 g_object_freeze_notify (G_OBJECT (label));
2167 gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
2168 gtk_label_set_use_markup_internal (label, FALSE);
2169 gtk_label_set_use_underline_internal (label, FALSE);
2171 gtk_label_recalculate (label);
2173 g_object_thaw_notify (G_OBJECT (label));
2177 * gtk_label_set_attributes:
2178 * @label: a #GtkLabel
2179 * @attrs: a #PangoAttrList
2181 * Sets a #PangoAttrList; the attributes in the list are applied to the
2184 * <note><para>The attributes set with this function will be applied
2185 * and merged with any other attributes previously effected by way
2186 * of the #GtkLabel:use-underline or #GtkLabel:use-markup properties.
2187 * While it is not recommended to mix markup strings with manually set
2188 * attributes, if you must; know that the attributes will be applied
2189 * to the label after the markup string is parsed.</para></note>
2192 gtk_label_set_attributes (GtkLabel *label,
2193 PangoAttrList *attrs)
2195 g_return_if_fail (GTK_IS_LABEL (label));
2197 gtk_label_set_attributes_internal (label, attrs);
2199 gtk_label_recalculate (label);
2201 gtk_label_clear_layout (label);
2202 gtk_widget_queue_resize (GTK_WIDGET (label));
2206 * gtk_label_get_attributes:
2207 * @label: a #GtkLabel
2209 * Gets the attribute list that was set on the label using
2210 * gtk_label_set_attributes(), if any. This function does
2211 * not reflect attributes that come from the labels markup
2212 * (see gtk_label_set_markup()). If you want to get the
2213 * effective attributes for the label, use
2214 * pango_layout_get_attribute (gtk_label_get_layout (label)).
2216 * Return value: (transfer none): the attribute list, or %NULL
2220 gtk_label_get_attributes (GtkLabel *label)
2222 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
2224 return label->priv->attrs;
2228 * gtk_label_set_label:
2229 * @label: a #GtkLabel
2230 * @str: the new text to set for the label
2232 * Sets the text of the label. The label is interpreted as
2233 * including embedded underlines and/or Pango markup depending
2234 * on the values of the #GtkLabel:use-underline" and
2235 * #GtkLabel:use-markup properties.
2238 gtk_label_set_label (GtkLabel *label,
2241 g_return_if_fail (GTK_IS_LABEL (label));
2243 g_object_freeze_notify (G_OBJECT (label));
2245 gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
2246 gtk_label_recalculate (label);
2248 g_object_thaw_notify (G_OBJECT (label));
2252 * gtk_label_get_label:
2253 * @label: a #GtkLabel
2255 * Fetches the text from a label widget including any embedded
2256 * underlines indicating mnemonics and Pango markup. (See
2257 * gtk_label_get_text()).
2259 * Return value: the text of the label widget. This string is
2260 * owned by the widget and must not be modified or freed.
2262 G_CONST_RETURN gchar *
2263 gtk_label_get_label (GtkLabel *label)
2265 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
2267 return label->priv->label;
2275 GdkColor *link_color;
2276 GdkColor *visited_link_color;
2280 start_element_handler (GMarkupParseContext *context,
2281 const gchar *element_name,
2282 const gchar **attribute_names,
2283 const gchar **attribute_values,
2287 GtkLabelPrivate *priv;
2288 UriParserData *pdata = user_data;
2290 if (strcmp (element_name, "a") == 0)
2293 const gchar *uri = NULL;
2294 const gchar *title = NULL;
2295 gboolean visited = FALSE;
2299 GdkColor *color = NULL;
2301 g_markup_parse_context_get_position (context, &line_number, &char_number);
2303 for (i = 0; attribute_names[i] != NULL; i++)
2305 const gchar *attr = attribute_names[i];
2307 if (strcmp (attr, "href") == 0)
2308 uri = attribute_values[i];
2309 else if (strcmp (attr, "title") == 0)
2310 title = attribute_values[i];
2315 G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE,
2316 "Attribute '%s' is not allowed on the <a> tag "
2317 "on line %d char %d",
2318 attr, line_number, char_number);
2327 G_MARKUP_ERROR_INVALID_CONTENT,
2328 "Attribute 'href' was missing on the <a> tag "
2329 "on line %d char %d",
2330 line_number, char_number);
2335 priv = pdata->label->priv;
2336 if (priv->track_links && priv->select_info)
2339 for (l = priv->select_info->links; l; l = l->next)
2342 if (strcmp (uri, link->uri) == 0)
2344 visited = link->visited;
2351 color = pdata->visited_link_color;
2353 color = pdata->link_color;
2355 g_string_append_printf (pdata->new_str,
2356 "<span color=\"#%04x%04x%04x\" underline=\"single\">",
2361 link = g_new0 (GtkLabelLink, 1);
2362 link->uri = g_strdup (uri);
2363 link->title = g_strdup (title);
2364 link->visited = visited;
2365 pdata->links = g_list_append (pdata->links, link);
2371 g_string_append_c (pdata->new_str, '<');
2372 g_string_append (pdata->new_str, element_name);
2374 for (i = 0; attribute_names[i] != NULL; i++)
2376 const gchar *attr = attribute_names[i];
2377 const gchar *value = attribute_values[i];
2380 newvalue = g_markup_escape_text (value, -1);
2382 g_string_append_c (pdata->new_str, ' ');
2383 g_string_append (pdata->new_str, attr);
2384 g_string_append (pdata->new_str, "=\"");
2385 g_string_append (pdata->new_str, newvalue);
2386 g_string_append_c (pdata->new_str, '\"');
2390 g_string_append_c (pdata->new_str, '>');
2395 end_element_handler (GMarkupParseContext *context,
2396 const gchar *element_name,
2400 UriParserData *pdata = user_data;
2402 if (!strcmp (element_name, "a"))
2403 g_string_append (pdata->new_str, "</span>");
2406 g_string_append (pdata->new_str, "</");
2407 g_string_append (pdata->new_str, element_name);
2408 g_string_append_c (pdata->new_str, '>');
2413 text_handler (GMarkupParseContext *context,
2419 UriParserData *pdata = user_data;
2422 newtext = g_markup_escape_text (text, text_len);
2423 g_string_append (pdata->new_str, newtext);
2427 static const GMarkupParser markup_parser =
2429 start_element_handler,
2430 end_element_handler,
2437 xml_isspace (gchar c)
2439 return (c == ' ' || c == '\t' || c == '\n' || c == '\r');
2443 link_free (GtkLabelLink *link)
2446 g_free (link->title);
2451 gtk_label_get_link_colors (GtkWidget *widget,
2452 GdkColor **link_color,
2453 GdkColor **visited_link_color)
2455 GtkStyleContext *context;
2457 context = gtk_widget_get_style_context (widget);
2458 gtk_style_context_get_style (context,
2459 "link-color", link_color,
2460 "visited-link-color", visited_link_color,
2463 *link_color = gdk_color_copy (&default_link_color);
2464 if (!*visited_link_color)
2465 *visited_link_color = gdk_color_copy (&default_visited_link_color);
2469 parse_uri_markup (GtkLabel *label,
2475 GMarkupParseContext *context = NULL;
2476 const gchar *p, *end;
2477 gboolean needs_root = TRUE;
2479 UriParserData pdata;
2481 length = strlen (str);
2485 pdata.label = label;
2487 pdata.new_str = g_string_sized_new (length);
2489 gtk_label_get_link_colors (GTK_WIDGET (label), &pdata.link_color, &pdata.visited_link_color);
2491 while (p != end && xml_isspace (*p))
2494 if (end - p >= 8 && strncmp (p, "<markup>", 8) == 0)
2497 context = g_markup_parse_context_new (&markup_parser, 0, &pdata, NULL);
2501 if (!g_markup_parse_context_parse (context, "<markup>", -1, error))
2505 if (!g_markup_parse_context_parse (context, str, length, error))
2510 if (!g_markup_parse_context_parse (context, "</markup>", -1, error))
2514 if (!g_markup_parse_context_end_parse (context, error))
2517 g_markup_parse_context_free (context);
2519 *new_str = g_string_free (pdata.new_str, FALSE);
2520 *links = pdata.links;
2522 gdk_color_free (pdata.link_color);
2523 gdk_color_free (pdata.visited_link_color);
2528 g_markup_parse_context_free (context);
2529 g_string_free (pdata.new_str, TRUE);
2530 g_list_foreach (pdata.links, (GFunc)link_free, NULL);
2531 g_list_free (pdata.links);
2532 gdk_color_free (pdata.link_color);
2533 gdk_color_free (pdata.visited_link_color);
2539 gtk_label_ensure_has_tooltip (GtkLabel *label)
2541 GtkLabelPrivate *priv = label->priv;
2543 gboolean has_tooltip = FALSE;
2545 for (l = priv->select_info->links; l; l = l->next)
2547 GtkLabelLink *link = l->data;
2555 gtk_widget_set_has_tooltip (GTK_WIDGET (label), has_tooltip);
2559 gtk_label_set_markup_internal (GtkLabel *label,
2561 gboolean with_uline)
2563 GtkLabelPrivate *priv = label->priv;
2565 GError *error = NULL;
2566 PangoAttrList *attrs = NULL;
2567 gunichar accel_char = 0;
2569 GList *links = NULL;
2571 if (!parse_uri_markup (label, str, &new_str, &links, &error))
2573 g_warning ("Failed to set text from markup due to error parsing markup: %s",
2575 g_error_free (error);
2579 gtk_label_clear_links (label);
2582 gtk_label_ensure_select_info (label);
2583 priv->select_info->links = links;
2584 gtk_label_ensure_has_tooltip (label);
2589 gboolean enable_mnemonics;
2590 gboolean auto_mnemonics;
2592 g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
2593 "gtk-enable-mnemonics", &enable_mnemonics,
2594 "gtk-auto-mnemonics", &auto_mnemonics,
2597 if (!(enable_mnemonics && priv->mnemonics_visible &&
2599 (gtk_widget_is_sensitive (GTK_WIDGET (label)) &&
2600 (!priv->mnemonic_widget ||
2601 gtk_widget_is_sensitive (priv->mnemonic_widget))))))
2607 if (separate_uline_pattern (new_str, &key, &tmp, &pattern))
2616 if (!pango_parse_markup (new_str,
2618 with_uline ? '_' : 0,
2621 with_uline ? &accel_char : NULL,
2624 g_warning ("Failed to set text from markup due to error parsing markup: %s",
2627 g_error_free (error);
2634 gtk_label_set_text_internal (label, text);
2638 if (priv->effective_attrs)
2639 pango_attr_list_unref (priv->effective_attrs);
2640 priv->effective_attrs = attrs;
2643 if (accel_char != 0)
2644 priv->mnemonic_keyval = gdk_keyval_to_lower (gdk_unicode_to_keyval (accel_char));
2646 priv->mnemonic_keyval = GDK_KEY_VoidSymbol;
2650 * gtk_label_set_markup:
2651 * @label: a #GtkLabel
2652 * @str: a markup string (see <link linkend="PangoMarkupFormat">Pango markup format</link>)
2654 * Parses @str which is marked up with the <link
2655 * linkend="PangoMarkupFormat">Pango text markup language</link>, setting the
2656 * label's text and attribute list based on the parse results. If the @str is
2657 * external data, you may need to escape it with g_markup_escape_text() or
2658 * g_markup_printf_escaped()<!-- -->:
2662 * markup = g_markup_printf_escaped ("<span style=\"italic\">%s</span>", str);
2663 * gtk_label_set_markup (GTK_LABEL (label), markup);
2668 gtk_label_set_markup (GtkLabel *label,
2671 g_return_if_fail (GTK_IS_LABEL (label));
2673 g_object_freeze_notify (G_OBJECT (label));
2675 gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
2676 gtk_label_set_use_markup_internal (label, TRUE);
2677 gtk_label_set_use_underline_internal (label, FALSE);
2679 gtk_label_recalculate (label);
2681 g_object_thaw_notify (G_OBJECT (label));
2685 * gtk_label_set_markup_with_mnemonic:
2686 * @label: a #GtkLabel
2687 * @str: a markup string (see
2688 * <link linkend="PangoMarkupFormat">Pango markup format</link>)
2690 * Parses @str which is marked up with the
2691 * <link linkend="PangoMarkupFormat">Pango text markup language</link>,
2692 * setting the label's text and attribute list based on the parse results.
2693 * If characters in @str are preceded by an underscore, they are underlined
2694 * indicating that they represent a keyboard accelerator called a mnemonic.
2696 * The mnemonic key can be used to activate another widget, chosen
2697 * automatically, or explicitly using gtk_label_set_mnemonic_widget().
2700 gtk_label_set_markup_with_mnemonic (GtkLabel *label,
2703 g_return_if_fail (GTK_IS_LABEL (label));
2705 g_object_freeze_notify (G_OBJECT (label));
2707 gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
2708 gtk_label_set_use_markup_internal (label, TRUE);
2709 gtk_label_set_use_underline_internal (label, TRUE);
2711 gtk_label_recalculate (label);
2713 g_object_thaw_notify (G_OBJECT (label));
2717 * gtk_label_get_text:
2718 * @label: a #GtkLabel
2720 * Fetches the text from a label widget, as displayed on the
2721 * screen. This does not include any embedded underlines
2722 * indicating mnemonics or Pango markup. (See gtk_label_get_label())
2724 * Return value: the text in the label widget. This is the internal
2725 * string used by the label, and must not be modified.
2727 G_CONST_RETURN gchar *
2728 gtk_label_get_text (GtkLabel *label)
2730 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
2732 return label->priv->text;
2735 static PangoAttrList *
2736 gtk_label_pattern_to_attrs (GtkLabel *label,
2737 const gchar *pattern)
2739 GtkLabelPrivate *priv = label->priv;
2741 const char *p = priv->text;
2742 const char *q = pattern;
2743 PangoAttrList *attrs;
2745 attrs = pango_attr_list_new ();
2749 while (*p && *q && *q != '_')
2751 p = g_utf8_next_char (p);
2755 while (*p && *q && *q == '_')
2757 p = g_utf8_next_char (p);
2763 PangoAttribute *attr = pango_attr_underline_new (PANGO_UNDERLINE_LOW);
2764 attr->start_index = start - priv->text;
2765 attr->end_index = p - priv->text;
2767 pango_attr_list_insert (attrs, attr);
2777 gtk_label_set_pattern_internal (GtkLabel *label,
2778 const gchar *pattern,
2779 gboolean is_mnemonic)
2781 GtkLabelPrivate *priv = label->priv;
2782 PangoAttrList *attrs;
2783 gboolean enable_mnemonics;
2784 gboolean auto_mnemonics;
2786 if (priv->pattern_set)
2791 g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
2792 "gtk-enable-mnemonics", &enable_mnemonics,
2793 "gtk-auto-mnemonics", &auto_mnemonics,
2796 if (enable_mnemonics && priv->mnemonics_visible && pattern &&
2798 (gtk_widget_is_sensitive (GTK_WIDGET (label)) &&
2799 (!priv->mnemonic_widget ||
2800 gtk_widget_is_sensitive (priv->mnemonic_widget)))))
2801 attrs = gtk_label_pattern_to_attrs (label, pattern);
2806 attrs = gtk_label_pattern_to_attrs (label, pattern);
2808 if (priv->effective_attrs)
2809 pango_attr_list_unref (priv->effective_attrs);
2810 priv->effective_attrs = attrs;
2814 * gtk_label_set_pattern:
2815 * @label: The #GtkLabel you want to set the pattern to.
2816 * @pattern: The pattern as described above.
2818 * The pattern of underlines you want under the existing text within the
2819 * #GtkLabel widget. For example if the current text of the label says
2820 * "FooBarBaz" passing a pattern of "___ ___" will underline
2821 * "Foo" and "Baz" but not "Bar".
2824 gtk_label_set_pattern (GtkLabel *label,
2825 const gchar *pattern)
2827 GtkLabelPrivate *priv = label->priv;
2829 g_return_if_fail (GTK_IS_LABEL (label));
2833 priv->pattern_set = FALSE;
2837 gtk_label_set_pattern_internal (label, pattern, FALSE);
2838 priv->pattern_set = TRUE;
2841 gtk_label_recalculate (label);
2843 gtk_label_clear_layout (label);
2844 gtk_widget_queue_resize (GTK_WIDGET (label));
2849 * gtk_label_set_justify:
2850 * @label: a #GtkLabel
2851 * @jtype: a #GtkJustification
2853 * Sets the alignment of the lines in the text of the label relative to
2854 * each other. %GTK_JUSTIFY_LEFT is the default value when the
2855 * widget is first created with gtk_label_new(). If you instead want
2856 * to set the alignment of the label as a whole, use
2857 * gtk_misc_set_alignment() instead. gtk_label_set_justify() has no
2858 * effect on labels containing only a single line.
2861 gtk_label_set_justify (GtkLabel *label,
2862 GtkJustification jtype)
2864 GtkLabelPrivate *priv;
2866 g_return_if_fail (GTK_IS_LABEL (label));
2867 g_return_if_fail (jtype >= GTK_JUSTIFY_LEFT && jtype <= GTK_JUSTIFY_FILL);
2871 if ((GtkJustification) priv->jtype != jtype)
2873 priv->jtype = jtype;
2875 /* No real need to be this drastic, but easier than duplicating the code */
2876 gtk_label_clear_layout (label);
2878 g_object_notify (G_OBJECT (label), "justify");
2879 gtk_widget_queue_resize (GTK_WIDGET (label));
2884 * gtk_label_get_justify:
2885 * @label: a #GtkLabel
2887 * Returns the justification of the label. See gtk_label_set_justify().
2889 * Return value: #GtkJustification
2892 gtk_label_get_justify (GtkLabel *label)
2894 g_return_val_if_fail (GTK_IS_LABEL (label), 0);
2896 return label->priv->jtype;
2900 * gtk_label_set_ellipsize:
2901 * @label: a #GtkLabel
2902 * @mode: a #PangoEllipsizeMode
2904 * Sets the mode used to ellipsize (add an ellipsis: "...") to the text
2905 * if there is not enough space to render the entire string.
2910 gtk_label_set_ellipsize (GtkLabel *label,
2911 PangoEllipsizeMode mode)
2913 GtkLabelPrivate *priv;
2915 g_return_if_fail (GTK_IS_LABEL (label));
2916 g_return_if_fail (mode >= PANGO_ELLIPSIZE_NONE && mode <= PANGO_ELLIPSIZE_END);
2920 if ((PangoEllipsizeMode) priv->ellipsize != mode)
2922 priv->ellipsize = mode;
2924 /* No real need to be this drastic, but easier than duplicating the code */
2925 gtk_label_clear_layout (label);
2927 g_object_notify (G_OBJECT (label), "ellipsize");
2928 gtk_widget_queue_resize (GTK_WIDGET (label));
2933 * gtk_label_get_ellipsize:
2934 * @label: a #GtkLabel
2936 * Returns the ellipsizing position of the label. See gtk_label_set_ellipsize().
2938 * Return value: #PangoEllipsizeMode
2943 gtk_label_get_ellipsize (GtkLabel *label)
2945 g_return_val_if_fail (GTK_IS_LABEL (label), PANGO_ELLIPSIZE_NONE);
2947 return label->priv->ellipsize;
2951 * gtk_label_set_width_chars:
2952 * @label: a #GtkLabel
2953 * @n_chars: the new desired width, in characters.
2955 * Sets the desired width in characters of @label to @n_chars.
2960 gtk_label_set_width_chars (GtkLabel *label,
2963 GtkLabelPrivate *priv;
2965 g_return_if_fail (GTK_IS_LABEL (label));
2969 if (priv->width_chars != n_chars)
2971 priv->width_chars = n_chars;
2972 g_object_notify (G_OBJECT (label), "width-chars");
2973 gtk_label_invalidate_wrap_width (label);
2974 gtk_widget_queue_resize (GTK_WIDGET (label));
2979 * gtk_label_get_width_chars:
2980 * @label: a #GtkLabel
2982 * Retrieves the desired width of @label, in characters. See
2983 * gtk_label_set_width_chars().
2985 * Return value: the width of the label in characters.
2990 gtk_label_get_width_chars (GtkLabel *label)
2992 g_return_val_if_fail (GTK_IS_LABEL (label), -1);
2994 return label->priv->width_chars;
2998 * gtk_label_set_max_width_chars:
2999 * @label: a #GtkLabel
3000 * @n_chars: the new desired maximum width, in characters.
3002 * Sets the desired maximum width in characters of @label to @n_chars.
3007 gtk_label_set_max_width_chars (GtkLabel *label,
3010 GtkLabelPrivate *priv;
3012 g_return_if_fail (GTK_IS_LABEL (label));
3016 if (priv->max_width_chars != n_chars)
3018 priv->max_width_chars = n_chars;
3020 g_object_notify (G_OBJECT (label), "max-width-chars");
3021 gtk_label_invalidate_wrap_width (label);
3022 gtk_widget_queue_resize (GTK_WIDGET (label));
3027 * gtk_label_get_max_width_chars:
3028 * @label: a #GtkLabel
3030 * Retrieves the desired maximum width of @label, in characters. See
3031 * gtk_label_set_width_chars().
3033 * Return value: the maximum width of the label in characters.
3038 gtk_label_get_max_width_chars (GtkLabel *label)
3040 g_return_val_if_fail (GTK_IS_LABEL (label), -1);
3042 return label->priv->max_width_chars;
3046 * gtk_label_set_line_wrap:
3047 * @label: a #GtkLabel
3048 * @wrap: the setting
3050 * Toggles line wrapping within the #GtkLabel widget. %TRUE makes it break
3051 * lines if text exceeds the widget's size. %FALSE lets the text get cut off
3052 * by the edge of the widget if it exceeds the widget size.
3054 * Note that setting line wrapping to %TRUE does not make the label
3055 * wrap at its parent container's width, because GTK+ widgets
3056 * conceptually can't make their requisition depend on the parent
3057 * container's size. For a label that wraps at a specific position,
3058 * set the label's width using gtk_widget_set_size_request().
3061 gtk_label_set_line_wrap (GtkLabel *label,
3064 GtkLabelPrivate *priv;
3066 g_return_if_fail (GTK_IS_LABEL (label));
3070 wrap = wrap != FALSE;
3072 if (priv->wrap != wrap)
3076 gtk_label_clear_layout (label);
3077 gtk_widget_queue_resize (GTK_WIDGET (label));
3078 g_object_notify (G_OBJECT (label), "wrap");
3083 * gtk_label_get_line_wrap:
3084 * @label: a #GtkLabel
3086 * Returns whether lines in the label are automatically wrapped.
3087 * See gtk_label_set_line_wrap().
3089 * Return value: %TRUE if the lines of the label are automatically wrapped.
3092 gtk_label_get_line_wrap (GtkLabel *label)
3094 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
3096 return label->priv->wrap;
3100 * gtk_label_set_line_wrap_mode:
3101 * @label: a #GtkLabel
3102 * @wrap_mode: the line wrapping mode
3104 * If line wrapping is on (see gtk_label_set_line_wrap()) this controls how
3105 * the line wrapping is done. The default is %PANGO_WRAP_WORD which means
3106 * wrap on word boundaries.
3111 gtk_label_set_line_wrap_mode (GtkLabel *label,
3112 PangoWrapMode wrap_mode)
3114 GtkLabelPrivate *priv;
3116 g_return_if_fail (GTK_IS_LABEL (label));
3120 if (priv->wrap_mode != wrap_mode)
3122 priv->wrap_mode = wrap_mode;
3123 g_object_notify (G_OBJECT (label), "wrap-mode");
3125 gtk_widget_queue_resize (GTK_WIDGET (label));
3130 * gtk_label_get_line_wrap_mode:
3131 * @label: a #GtkLabel
3133 * Returns line wrap mode used by the label. See gtk_label_set_line_wrap_mode().
3135 * Return value: %TRUE if the lines of the label are automatically wrapped.
3140 gtk_label_get_line_wrap_mode (GtkLabel *label)
3142 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
3144 return label->priv->wrap_mode;
3148 gtk_label_destroy (GtkWidget *widget)
3150 GtkLabel *label = GTK_LABEL (widget);
3152 gtk_label_set_mnemonic_widget (label, NULL);
3154 GTK_WIDGET_CLASS (gtk_label_parent_class)->destroy (widget);
3158 gtk_label_finalize (GObject *object)
3160 GtkLabel *label = GTK_LABEL (object);
3161 GtkLabelPrivate *priv = label->priv;
3163 g_free (priv->label);
3164 g_free (priv->text);
3167 g_object_unref (priv->layout);
3170 pango_attr_list_unref (priv->attrs);
3172 if (priv->effective_attrs)
3173 pango_attr_list_unref (priv->effective_attrs);
3175 gtk_label_clear_links (label);
3176 g_free (priv->select_info);
3178 G_OBJECT_CLASS (gtk_label_parent_class)->finalize (object);
3182 gtk_label_clear_layout (GtkLabel *label)
3184 GtkLabelPrivate *priv = label->priv;
3188 g_object_unref (priv->layout);
3189 priv->layout = NULL;
3191 //gtk_label_clear_links (label);
3195 static PangoFontMetrics *
3196 get_font_metrics (PangoContext *context, GtkWidget *widget)
3198 GtkStyleContext *style_context;
3199 PangoFontDescription *font;
3200 PangoFontMetrics *retval;
3202 style_context = gtk_widget_get_style_context (widget);
3203 gtk_style_context_get (style_context, 0, "font", &font, NULL);
3205 retval = pango_context_get_metrics (context,
3207 pango_context_get_language (context));
3210 pango_font_description_free (font);
3216 * gtk_label_get_measuring_layout:
3218 * @existing_layout: %NULL or an existing layout already in use.
3219 * @width: the width to measure with in pango units, or -1 for infinite
3221 * Gets a layout that can be used for measuring sizes. The returned
3222 * layout will be identical to the label's layout except for the
3223 * layout's width, which will be set to @width. Do not modify the returned
3226 * Returns: a new reference to a pango layout
3228 static PangoLayout *
3229 gtk_label_get_measuring_layout (GtkLabel * label,
3230 PangoLayout *existing_layout,
3233 GtkLabelPrivate *priv = label->priv;
3234 PangoRectangle rect;
3237 if (existing_layout != NULL)
3239 if (existing_layout != priv->layout)
3241 pango_layout_set_width (existing_layout, width);
3242 return existing_layout;
3245 g_object_unref (existing_layout);
3248 gtk_label_ensure_layout (label);
3250 if (pango_layout_get_width (priv->layout) == width)
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 return priv->layout;
3267 /* oftentimes we want to measure a width that is far wider than the current width,
3268 * even though the layout would not change if we made it wider. In that case, we
3269 * can just return the current layout, because for measuring purposes, it will be
3272 pango_layout_get_extents (priv->layout, NULL, &rect);
3273 if ((width == -1 || rect.width <= width) &&
3274 !pango_layout_is_wrapped (priv->layout) &&
3275 !pango_layout_is_ellipsized (priv->layout))
3277 g_object_ref (priv->layout);
3278 return priv->layout;
3281 copy = pango_layout_copy (priv->layout);
3282 pango_layout_set_width (copy, width);
3287 gtk_label_invalidate_wrap_width (GtkLabel *label)
3289 GtkLabelPrivate *priv = label->priv;
3291 priv->wrap_width = -1;
3295 gtk_label_update_layout_width (GtkLabel *label)
3297 GtkLabelPrivate *priv = label->priv;
3298 GtkWidget *widget = GTK_WIDGET (label);
3299 GtkAllocation allocation;
3301 g_assert (priv->layout);
3303 gtk_widget_get_allocation (widget, &allocation);
3305 if (priv->ellipsize)
3307 PangoRectangle logical;
3311 gtk_misc_get_padding (GTK_MISC (label), &xpad, &ypad);
3313 width = allocation.width - xpad * 2;
3314 height = allocation.height - ypad * 2;
3316 pango_layout_set_width (priv->layout, -1);
3317 pango_layout_get_pixel_extents (priv->layout, NULL, &logical);
3319 if (priv->have_transform)
3321 PangoContext *context = gtk_widget_get_pango_context (widget);
3322 const PangoMatrix *matrix = pango_context_get_matrix (context);
3324 const gdouble dx = matrix->xx; /* cos (M_PI * angle / 180) */
3325 const gdouble dy = matrix->xy; /* sin (M_PI * angle / 180) */
3326 if (fabs (dy) < 0.01)
3328 if (logical.width > width)
3329 pango_layout_set_width (priv->layout, width * PANGO_SCALE);
3331 else if (fabs (dx) < 0.01)
3333 if (logical.width > height)
3334 pango_layout_set_width (priv->layout, height * PANGO_SCALE);
3338 gdouble x0, y0, x1, y1, length;
3343 y0 = dx ? x0 * dy / dx : G_MAXDOUBLE;
3344 vertical = fabs (y0) > height / 2;
3349 x0 = dy ? y0 * dx / dy : G_MAXDOUBLE;
3352 length = 2 * sqrt (x0 * x0 + y0 * y0);
3353 pango_layout_set_width (priv->layout, rint (length * PANGO_SCALE));
3354 pango_layout_get_pixel_size (priv->layout, NULL, &cy);
3361 y0 = height/2 + y1 - y0;
3366 x0 = width/2 + x1 - x0;
3370 length = length - sqrt (x0 * x0 + y0 * y0) * 2;
3371 pango_layout_set_width (priv->layout, rint (length * PANGO_SCALE));
3374 else if (logical.width > width)
3375 pango_layout_set_width (priv->layout, width * PANGO_SCALE);
3377 else if (priv->wrap)
3379 gdouble angle = gtk_label_get_angle (label);
3382 gtk_misc_get_padding (GTK_MISC (label), &xpad, &ypad);
3384 if (angle == 90 || angle == 270)
3385 width = allocation.height - ypad * 2;
3387 width = allocation.width - xpad * 2;
3389 pango_layout_set_width (priv->layout, MAX (width, 1) * PANGO_SCALE);
3391 else /* !priv->wrap */
3392 pango_layout_set_width (priv->layout, -1);
3396 gtk_label_ensure_layout (GtkLabel *label)
3398 GtkLabelPrivate *priv = label->priv;
3402 widget = GTK_WIDGET (label);
3404 rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
3408 PangoAlignment align = PANGO_ALIGN_LEFT; /* Quiet gcc */
3409 gdouble angle = gtk_label_get_angle (label);
3411 if (angle != 0.0 && !priv->select_info)
3413 PangoMatrix matrix = PANGO_MATRIX_INIT;
3415 /* We rotate the standard singleton PangoContext for the widget,
3416 * depending on the fact that it's meant pretty much exclusively
3419 pango_matrix_rotate (&matrix, angle);
3421 pango_context_set_matrix (gtk_widget_get_pango_context (widget), &matrix);
3423 priv->have_transform = TRUE;
3427 if (priv->have_transform)
3428 pango_context_set_matrix (gtk_widget_get_pango_context (widget), NULL);
3430 priv->have_transform = FALSE;
3433 priv->layout = gtk_widget_create_pango_layout (widget, priv->text);
3435 if (priv->effective_attrs)
3436 pango_layout_set_attributes (priv->layout, priv->effective_attrs);
3438 gtk_label_rescan_links (label);
3440 switch (priv->jtype)
3442 case GTK_JUSTIFY_LEFT:
3443 align = rtl ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_LEFT;
3445 case GTK_JUSTIFY_RIGHT:
3446 align = rtl ? PANGO_ALIGN_LEFT : PANGO_ALIGN_RIGHT;
3448 case GTK_JUSTIFY_CENTER:
3449 align = PANGO_ALIGN_CENTER;
3451 case GTK_JUSTIFY_FILL:
3452 align = rtl ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_LEFT;
3453 pango_layout_set_justify (priv->layout, TRUE);
3456 g_assert_not_reached();
3459 pango_layout_set_alignment (priv->layout, align);
3460 pango_layout_set_ellipsize (priv->layout, priv->ellipsize);
3461 pango_layout_set_wrap (priv->layout, priv->wrap_mode);
3462 pango_layout_set_single_paragraph_mode (priv->layout, priv->single_line_mode);
3464 gtk_label_update_layout_width (label);
3469 get_single_line_height (GtkWidget *widget,
3470 PangoLayout *layout)
3472 PangoContext *context;
3473 PangoFontMetrics *metrics;
3474 gint ascent, descent;
3476 context = pango_layout_get_context (layout);
3477 metrics = get_font_metrics (context, widget);
3478 ascent = pango_font_metrics_get_ascent (metrics);
3479 descent = pango_font_metrics_get_descent (metrics);
3480 pango_font_metrics_unref (metrics);
3482 return ascent + descent;
3485 static GtkSizeRequestMode
3486 gtk_label_get_request_mode (GtkWidget *widget)
3488 GtkLabel *label = GTK_LABEL (widget);
3489 gdouble angle = gtk_label_get_angle (label);
3491 if (label->priv->wrap)
3492 return (angle == 90 || angle == 270) ?
3493 GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT :
3494 GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
3496 return GTK_SIZE_REQUEST_CONSTANT_SIZE;
3500 get_size_for_allocation (GtkLabel *label,
3501 GtkOrientation orientation,
3506 PangoLayout *layout;
3509 layout = gtk_label_get_measuring_layout (label, NULL, allocation * PANGO_SCALE);
3511 pango_layout_get_pixel_size (layout, NULL, &text_height);
3514 *minimum_size = text_height;
3517 *natural_size = text_height;
3519 g_object_unref (layout);
3523 get_char_pixels (GtkWidget *label,
3524 PangoLayout *layout)
3526 PangoContext *context;
3527 PangoFontMetrics *metrics;
3528 gint char_width, digit_width;
3530 context = pango_layout_get_context (layout);
3531 metrics = get_font_metrics (context, GTK_WIDGET (label));
3532 char_width = pango_font_metrics_get_approximate_char_width (metrics);
3533 digit_width = pango_font_metrics_get_approximate_digit_width (metrics);
3534 pango_font_metrics_unref (metrics);
3536 return MAX (char_width, digit_width);;
3540 gtk_label_get_preferred_layout_size (GtkLabel *label,
3541 PangoRectangle *required,
3542 PangoRectangle *natural)
3544 GtkLabelPrivate *priv = label->priv;
3545 PangoLayout *layout;
3547 /* "width-chars" Hard-coded minimum width:
3548 * - minimum size should be MAX (width-chars, strlen ("..."));
3549 * - natural size should be MAX (width-chars, strlen (priv->text));
3551 * "max-width-chars" User specified maximum size requisition
3552 * - minimum size should be MAX (width-chars, 0)
3553 * - natural size should be MIN (max-width-chars, strlen (priv->text))
3555 * For ellipsizing labels; if max-width-chars is specified: either it is used as
3556 * a minimum size or the label text as a minimum size (natural size still overflows).
3558 * For wrapping labels; A reasonable minimum size is useful to naturally layout
3559 * interfaces automatically. In this case if no "width-chars" is specified, the minimum
3560 * width will default to the wrap guess that gtk_label_ensure_layout() does.
3563 /* Start off with the pixel extents of an as-wide-as-possible layout */
3564 layout = gtk_label_get_measuring_layout (label, NULL, -1);
3566 pango_layout_get_extents (layout, NULL, natural);
3567 natural->x = natural->y = 0;
3569 if (priv->single_line_mode || priv->wrap)
3570 natural->height = get_single_line_height (GTK_WIDGET (label), layout);
3572 if (priv->ellipsize || priv->wrap)
3574 /* a layout with widdth 0 will be as small as humanly possible */
3575 layout = gtk_label_get_measuring_layout (label, layout, 0);
3577 pango_layout_get_extents (layout, NULL, required);
3578 required->x = required->y = 0;
3579 required->height = natural->height;
3583 *required = *natural;
3586 if (priv->width_chars > -1 || priv->max_width_chars > -1)
3590 char_pixels = get_char_pixels (GTK_WIDGET (label), layout);
3592 if (priv->width_chars > -1)
3593 required->width = MAX (required->width, char_pixels * priv->width_chars);
3595 if (priv->max_width_chars > -1)
3596 natural->width = MIN (natural->width, priv->max_width_chars * char_pixels);
3597 natural->width = MAX (natural->width, required->width);
3600 g_object_unref (layout);
3604 gtk_label_get_preferred_size (GtkWidget *widget,
3605 GtkOrientation orientation,
3609 GtkLabel *label = GTK_LABEL (widget);
3610 GtkLabelPrivate *priv = label->priv;
3611 PangoRectangle required_rect;
3612 PangoRectangle natural_rect;
3615 gtk_label_get_preferred_layout_size (label, &required_rect, &natural_rect);
3617 /* Now that we have minimum and natural sizes in pango extents, apply a possible transform */
3618 if (priv->have_transform)
3621 PangoContext *context;
3622 const PangoMatrix *matrix;
3624 copy = pango_layout_copy (priv->layout);
3625 context = pango_layout_get_context (copy);
3626 matrix = pango_context_get_matrix (context);
3628 pango_layout_set_width (copy, -1);
3629 pango_layout_set_ellipsize (copy, PANGO_ELLIPSIZE_NONE);
3631 pango_layout_get_extents (copy, NULL, &natural_rect);
3632 g_object_unref (copy);
3634 pango_matrix_transform_rectangle (matrix, &required_rect);
3635 pango_matrix_transform_rectangle (matrix, &natural_rect);
3637 /* Bump the natural size in case of ellipsize to ensure pango has
3638 * enough space in the angles (note, we could alternatively set the
3639 * layout to not ellipsize when we know we have been allocated our
3640 * full natural size, or it may be that pango needs a fix here).
3642 if (priv->ellipsize && priv->angle != 0 && priv->angle != 90 &&
3643 priv->angle != 180 && priv->angle != 270 && priv->angle != 360)
3645 /* For some reason we only need this at about 110 degrees, and only
3646 * when gaining in height
3648 natural_rect.height += ROTATION_ELLIPSIZE_PADDING * 2 * PANGO_SCALE;
3649 natural_rect.width += ROTATION_ELLIPSIZE_PADDING * 2 * PANGO_SCALE;
3653 required_rect.width = PANGO_PIXELS_CEIL (required_rect.width);
3654 required_rect.height = PANGO_PIXELS_CEIL (required_rect.height);
3656 natural_rect.width = PANGO_PIXELS_CEIL (natural_rect.width);
3657 natural_rect.height = PANGO_PIXELS_CEIL (natural_rect.height);
3659 gtk_misc_get_padding (GTK_MISC (label), &xpad, &ypad);
3661 if (orientation == GTK_ORIENTATION_HORIZONTAL)
3663 /* Note, we cant use get_size_for_allocation() when rotating
3664 * ellipsized labels.
3666 if (!(priv->ellipsize && priv->have_transform) &&
3667 (priv->angle == 90 || priv->angle == 270))
3669 /* Doing a h4w request on a rotated label here, return the
3670 * required width for the minimum height.
3672 get_size_for_allocation (label,
3673 GTK_ORIENTATION_VERTICAL,
3674 required_rect.height,
3675 minimum_size, natural_size);
3680 /* Normal desired width */
3681 *minimum_size = required_rect.width;
3682 *natural_size = natural_rect.width;
3685 *minimum_size += xpad * 2;
3686 *natural_size += xpad * 2;
3688 else /* GTK_ORIENTATION_VERTICAL */
3690 /* Note, we cant use get_size_for_allocation() when rotating
3691 * ellipsized labels.
3693 if (!(priv->ellipsize && priv->have_transform) &&
3694 (priv->angle == 0 || priv->angle == 180 || priv->angle == 360))
3696 /* Doing a w4h request on a label here, return the required
3697 * height for the minimum width.
3699 get_size_for_allocation (label,
3700 GTK_ORIENTATION_HORIZONTAL,
3701 required_rect.width,
3702 minimum_size, natural_size);
3706 /* A vertically rotated label does w4h, so return the base
3707 * desired height (text length)
3709 *minimum_size = required_rect.height;
3710 *natural_size = natural_rect.height;
3713 *minimum_size += ypad * 2;
3714 *natural_size += ypad * 2;
3720 gtk_label_get_preferred_width (GtkWidget *widget,
3724 gtk_label_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum_size, natural_size);
3728 gtk_label_get_preferred_height (GtkWidget *widget,
3732 gtk_label_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, minimum_size, natural_size);
3736 gtk_label_get_preferred_width_for_height (GtkWidget *widget,
3738 gint *minimum_width,
3739 gint *natural_width)
3741 GtkLabel *label = GTK_LABEL (widget);
3742 GtkLabelPrivate *priv = label->priv;
3744 if (priv->wrap && (priv->angle == 90 || priv->angle == 270))
3748 gtk_misc_get_padding (GTK_MISC (label), &xpad, &ypad);
3751 gtk_label_clear_layout (label);
3753 get_size_for_allocation (label, GTK_ORIENTATION_VERTICAL,
3754 MAX (1, height - (ypad * 2)),
3755 minimum_width, natural_width);
3758 *minimum_width += xpad * 2;
3761 *natural_width += xpad * 2;
3764 GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, minimum_width, natural_width);
3768 gtk_label_get_preferred_height_for_width (GtkWidget *widget,
3770 gint *minimum_height,
3771 gint *natural_height)
3773 GtkLabel *label = GTK_LABEL (widget);
3774 GtkLabelPrivate *priv = label->priv;
3776 if (priv->wrap && (priv->angle == 0 || priv->angle == 180 || priv->angle == 360))
3780 gtk_misc_get_padding (GTK_MISC (label), &xpad, &ypad);
3783 gtk_label_clear_layout (label);
3785 get_size_for_allocation (label, GTK_ORIENTATION_HORIZONTAL,
3786 MAX (1, width - xpad * 2),
3787 minimum_height, natural_height);
3790 *minimum_height += ypad * 2;
3793 *natural_height += ypad * 2;
3796 GTK_WIDGET_GET_CLASS (widget)->get_preferred_height (widget, minimum_height, natural_height);
3800 gtk_label_size_allocate (GtkWidget *widget,
3801 GtkAllocation *allocation)
3803 GtkLabel *label = GTK_LABEL (widget);
3804 GtkLabelPrivate *priv = label->priv;
3806 GTK_WIDGET_CLASS (gtk_label_parent_class)->size_allocate (widget, allocation);
3809 gtk_label_update_layout_width (label);
3811 if (priv->select_info && priv->select_info->window)
3813 gdk_window_move_resize (priv->select_info->window,
3817 allocation->height);
3822 gtk_label_update_cursor (GtkLabel *label)
3824 GtkLabelPrivate *priv = label->priv;
3827 if (!priv->select_info)
3830 widget = GTK_WIDGET (label);
3832 if (gtk_widget_get_realized (widget))
3834 GdkDisplay *display;
3837 if (gtk_widget_is_sensitive (widget))
3839 display = gtk_widget_get_display (widget);
3841 if (priv->select_info->active_link)
3842 cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
3843 else if (priv->select_info->selectable)
3844 cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
3851 gdk_window_set_cursor (priv->select_info->window, cursor);
3854 g_object_unref (cursor);
3859 gtk_label_state_changed (GtkWidget *widget,
3860 GtkStateType prev_state)
3862 GtkLabel *label = GTK_LABEL (widget);
3863 GtkLabelPrivate *priv = label->priv;
3865 if (priv->select_info)
3867 if (!gtk_widget_is_sensitive (widget))
3868 gtk_label_select_region (label, 0, 0);
3870 gtk_label_update_cursor (label);
3873 if (GTK_WIDGET_CLASS (gtk_label_parent_class)->state_changed)
3874 GTK_WIDGET_CLASS (gtk_label_parent_class)->state_changed (widget, prev_state);
3878 gtk_label_style_updated (GtkWidget *widget)
3880 GtkLabel *label = GTK_LABEL (widget);
3882 GTK_WIDGET_CLASS (gtk_label_parent_class)->style_updated (widget);
3884 /* We have to clear the layout, fonts etc. may have changed */
3885 gtk_label_clear_layout (label);
3886 gtk_label_invalidate_wrap_width (label);
3890 gtk_label_direction_changed (GtkWidget *widget,
3891 GtkTextDirection previous_dir)
3893 GtkLabel *label = GTK_LABEL (widget);
3894 GtkLabelPrivate *priv = label->priv;
3897 pango_layout_context_changed (priv->layout);
3899 GTK_WIDGET_CLASS (gtk_label_parent_class)->direction_changed (widget, previous_dir);
3903 get_layout_location (GtkLabel *label,
3907 GtkAllocation allocation;
3910 GtkLabelPrivate *priv;
3911 gint req_width, x, y;
3914 gfloat xalign, yalign;
3915 PangoRectangle logical;
3917 misc = GTK_MISC (label);
3918 widget = GTK_WIDGET (label);
3921 gtk_misc_get_alignment (misc, &xalign, &yalign);
3922 gtk_misc_get_padding (misc, &xpad, &ypad);
3924 if (gtk_widget_get_direction (widget) != GTK_TEXT_DIR_LTR)
3925 xalign = 1.0 - xalign;
3927 pango_layout_get_extents (priv->layout, NULL, &logical);
3929 if (priv->have_transform)
3931 PangoContext *context = gtk_widget_get_pango_context (widget);
3932 const PangoMatrix *matrix = pango_context_get_matrix (context);
3933 pango_matrix_transform_rectangle (matrix, &logical);
3936 pango_extents_to_pixels (&logical, NULL);
3938 req_width = logical.width;
3939 req_height = logical.height;
3941 req_width += 2 * xpad;
3942 req_height += 2 * ypad;
3944 gtk_widget_get_allocation (widget, &allocation);
3946 x = floor (allocation.x + xpad + xalign * (allocation.width - req_width));
3948 if (gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR)
3949 x = MAX (x, allocation.x + xpad);
3951 x = MIN (x, allocation.x + allocation.width - xpad);
3954 /* bgo#315462 - For single-line labels, *do* align the requisition with
3955 * respect to the allocation, even if we are under-allocated. For multi-line
3956 * labels, always show the top of the text when they are under-allocated. The
3957 * rationale is this:
3959 * - Single-line labels appear in GtkButtons, and it is very easy to get them
3960 * to be smaller than their requisition. The button may clip the label, but
3961 * the label will still be able to show most of itself and the focus
3962 * rectangle. Also, it is fairly easy to read a single line of clipped text.
3964 * - Multi-line labels should not be clipped to showing "something in the
3965 * middle". You want to read the first line, at least, to get some context.
3967 if (pango_layout_get_line_count (priv->layout) == 1)
3968 y = floor (allocation.y + ypad + (allocation.height - req_height) * yalign);
3970 y = floor (allocation.y + ypad + MAX ((allocation.height - req_height) * yalign, 0));
3980 draw_insertion_cursor (GtkLabel *label,
3982 GdkRectangle *cursor_location,
3983 gboolean is_primary,
3984 PangoDirection direction,
3985 gboolean draw_arrow)
3987 GtkWidget *widget = GTK_WIDGET (label);
3988 GtkTextDirection text_dir;
3990 if (direction == PANGO_DIRECTION_LTR)
3991 text_dir = GTK_TEXT_DIR_LTR;
3993 text_dir = GTK_TEXT_DIR_RTL;
3995 gtk_draw_insertion_cursor (widget, cr, cursor_location,
3996 is_primary, text_dir, draw_arrow);
3999 static PangoDirection
4000 get_cursor_direction (GtkLabel *label)
4002 GtkLabelPrivate *priv = label->priv;
4005 g_assert (priv->select_info);
4007 gtk_label_ensure_layout (label);
4009 for (l = pango_layout_get_lines_readonly (priv->layout); l; l = l->next)
4011 PangoLayoutLine *line = l->data;
4013 /* If priv->select_info->selection_end is at the very end of
4014 * the line, we don't know if the cursor is on this line or
4015 * the next without looking ahead at the next line. (End
4016 * of paragraph is different from line break.) But it's
4017 * definitely in this paragraph, which is good enough
4018 * to figure out the resolved direction.
4020 if (line->start_index + line->length >= priv->select_info->selection_end)
4021 return line->resolved_dir;
4024 return PANGO_DIRECTION_LTR;
4028 gtk_label_draw_cursor (GtkLabel *label, cairo_t *cr, gint xoffset, gint yoffset)
4030 GtkLabelPrivate *priv = label->priv;
4033 if (priv->select_info == NULL)
4036 widget = GTK_WIDGET (label);
4038 if (gtk_widget_is_drawable (widget))
4040 PangoDirection keymap_direction;
4041 PangoDirection cursor_direction;
4042 PangoRectangle strong_pos, weak_pos;
4043 gboolean split_cursor;
4044 PangoRectangle *cursor1 = NULL;
4045 PangoRectangle *cursor2 = NULL;
4046 GdkRectangle cursor_location;
4047 PangoDirection dir1 = PANGO_DIRECTION_NEUTRAL;
4048 PangoDirection dir2 = PANGO_DIRECTION_NEUTRAL;
4050 keymap_direction = gdk_keymap_get_direction (gdk_keymap_get_for_display (gtk_widget_get_display (widget)));
4051 cursor_direction = get_cursor_direction (label);
4053 gtk_label_ensure_layout (label);
4055 pango_layout_get_cursor_pos (priv->layout, priv->select_info->selection_end,
4056 &strong_pos, &weak_pos);
4058 g_object_get (gtk_widget_get_settings (widget),
4059 "gtk-split-cursor", &split_cursor,
4062 dir1 = cursor_direction;
4066 cursor1 = &strong_pos;
4068 if (strong_pos.x != weak_pos.x ||
4069 strong_pos.y != weak_pos.y)
4071 dir2 = (cursor_direction == PANGO_DIRECTION_LTR) ? PANGO_DIRECTION_RTL : PANGO_DIRECTION_LTR;
4072 cursor2 = &weak_pos;
4077 if (keymap_direction == cursor_direction)
4078 cursor1 = &strong_pos;
4080 cursor1 = &weak_pos;
4083 cursor_location.x = xoffset + PANGO_PIXELS (cursor1->x);
4084 cursor_location.y = yoffset + PANGO_PIXELS (cursor1->y);
4085 cursor_location.width = 0;
4086 cursor_location.height = PANGO_PIXELS (cursor1->height);
4088 draw_insertion_cursor (label, cr,
4089 &cursor_location, TRUE, dir1,
4090 dir2 != PANGO_DIRECTION_NEUTRAL);
4092 if (dir2 != PANGO_DIRECTION_NEUTRAL)
4094 cursor_location.x = xoffset + PANGO_PIXELS (cursor2->x);
4095 cursor_location.y = yoffset + PANGO_PIXELS (cursor2->y);
4096 cursor_location.width = 0;
4097 cursor_location.height = PANGO_PIXELS (cursor2->height);
4099 draw_insertion_cursor (label, cr,
4100 &cursor_location, FALSE, dir2,
4106 static GtkLabelLink *
4107 gtk_label_get_focus_link (GtkLabel *label)
4109 GtkLabelPrivate *priv = label->priv;
4110 GtkLabelSelectionInfo *info = priv->select_info;
4116 if (info->selection_anchor != info->selection_end)
4119 for (l = info->links; l; l = l->next)
4121 GtkLabelLink *link = l->data;
4122 if (link->start <= info->selection_anchor &&
4123 info->selection_anchor <= link->end)
4131 gtk_label_draw (GtkWidget *widget,
4134 GtkLabel *label = GTK_LABEL (widget);
4135 GtkLabelPrivate *priv = label->priv;
4136 GtkLabelSelectionInfo *info = priv->select_info;
4137 GtkAllocation allocation;
4138 GtkStyleContext *context;
4139 GtkStateFlags state;
4142 gtk_label_ensure_layout (label);
4144 if (priv->text && (*priv->text != '\0'))
4146 GdkRGBA *bg_color, *fg_color;
4148 get_layout_location (label, &x, &y);
4150 context = gtk_widget_get_style_context (widget);
4151 gtk_widget_get_allocation (widget, &allocation);
4153 cairo_translate (cr, -allocation.x, -allocation.y);
4155 state = gtk_widget_get_state_flags (widget);
4156 gtk_style_context_set_state (context, state);
4158 gtk_render_layout (context, cr,
4163 (info->selection_anchor != info->selection_end))
4166 cairo_region_t *clip;
4168 range[0] = info->selection_anchor;
4169 range[1] = info->selection_end;
4171 if (range[0] > range[1])
4173 gint tmp = range[0];
4174 range[0] = range[1];
4178 clip = gdk_pango_layout_get_clip_region (priv->layout,
4183 /* FIXME should use gtk_paint, but it can't use a clip region */
4186 gdk_cairo_region (cr, clip);
4189 state = GTK_STATE_FLAG_SELECTED;
4191 if (gtk_widget_has_focus (widget))
4192 state |= GTK_STATE_FLAG_FOCUSED;
4194 gtk_style_context_get (context, state,
4195 "background-color", &bg_color,
4199 gdk_cairo_set_source_rgba (cr, bg_color);
4202 gdk_cairo_set_source_rgba (cr, fg_color);
4203 cairo_move_to (cr, x, y);
4204 _gtk_pango_fill_layout (cr, priv->layout);
4207 cairo_region_destroy (clip);
4209 gdk_rgba_free (bg_color);
4210 gdk_rgba_free (fg_color);
4214 GtkLabelLink *focus_link;
4215 GtkLabelLink *active_link;
4217 cairo_region_t *clip;
4219 GdkColor *text_color;
4220 GdkColor *link_color;
4221 GdkColor *visited_link_color;
4223 if (info->selectable && gtk_widget_has_focus (widget))
4224 gtk_label_draw_cursor (label, cr, x, y);
4226 focus_link = gtk_label_get_focus_link (label);
4227 active_link = info->active_link;
4234 range[0] = active_link->start;
4235 range[1] = active_link->end;
4239 clip = gdk_pango_layout_get_clip_region (priv->layout,
4243 gdk_cairo_region (cr, clip);
4245 cairo_region_destroy (clip);
4247 gtk_label_get_link_colors (widget, &link_color, &visited_link_color);
4248 if (active_link->visited)
4249 text_color = visited_link_color;
4251 text_color = link_color;
4253 if (info->link_clicked)
4254 state = GTK_STATE_FLAG_ACTIVE;
4256 state = GTK_STATE_FLAG_PRELIGHT;
4258 gtk_style_context_get (context, state,
4259 "background-color", &bg_color,
4262 gdk_cairo_set_source_rgba (cr, bg_color);
4265 gdk_cairo_set_source_color (cr, text_color);
4266 cairo_move_to (cr, x, y);
4267 _gtk_pango_fill_layout (cr, priv->layout);
4269 gdk_color_free (link_color);
4270 gdk_color_free (visited_link_color);
4271 gdk_rgba_free (bg_color);
4276 if (focus_link && gtk_widget_has_focus (widget))
4278 range[0] = focus_link->start;
4279 range[1] = focus_link->end;
4281 clip = gdk_pango_layout_get_clip_region (priv->layout,
4285 cairo_region_get_extents (clip, &rect);
4287 state = gtk_widget_get_state_flags (widget);
4288 gtk_style_context_set_state (context, state);
4290 gtk_render_focus (context, cr,
4292 rect.width, rect.height);
4294 cairo_region_destroy (clip);
4303 separate_uline_pattern (const gchar *str,
4308 gboolean underscore;
4311 gchar *pattern_dest;
4313 *accel_key = GDK_KEY_VoidSymbol;
4314 *new_str = g_new (gchar, strlen (str) + 1);
4315 *pattern = g_new (gchar, g_utf8_strlen (str, -1) + 1);
4321 pattern_dest = *pattern;
4326 const gchar *next_src;
4328 c = g_utf8_get_char (src);
4329 if (c == (gunichar)-1)
4331 g_warning ("Invalid input string");
4337 next_src = g_utf8_next_char (src);
4342 *pattern_dest++ = ' ';
4345 *pattern_dest++ = '_';
4346 if (*accel_key == GDK_KEY_VoidSymbol)
4347 *accel_key = gdk_keyval_to_lower (gdk_unicode_to_keyval (c));
4350 while (src < next_src)
4364 while (src < next_src)
4367 *pattern_dest++ = ' ';
4379 gtk_label_set_uline_text_internal (GtkLabel *label,
4382 GtkLabelPrivate *priv = label->priv;
4383 guint accel_key = GDK_KEY_VoidSymbol;
4387 g_return_if_fail (GTK_IS_LABEL (label));
4388 g_return_if_fail (str != NULL);
4390 /* Split text into the base text and a separate pattern
4393 if (!separate_uline_pattern (str, &accel_key, &new_str, &pattern))
4396 gtk_label_set_text_internal (label, new_str);
4397 gtk_label_set_pattern_internal (label, pattern, TRUE);
4398 priv->mnemonic_keyval = accel_key;
4404 * gtk_label_set_text_with_mnemonic:
4405 * @label: a #GtkLabel
4408 * Sets the label's text from the string @str.
4409 * If characters in @str are preceded by an underscore, they are underlined
4410 * indicating that they represent a keyboard accelerator called a mnemonic.
4411 * The mnemonic key can be used to activate another widget, chosen
4412 * automatically, or explicitly using gtk_label_set_mnemonic_widget().
4415 gtk_label_set_text_with_mnemonic (GtkLabel *label,
4418 g_return_if_fail (GTK_IS_LABEL (label));
4419 g_return_if_fail (str != NULL);
4421 g_object_freeze_notify (G_OBJECT (label));
4423 gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
4424 gtk_label_set_use_markup_internal (label, FALSE);
4425 gtk_label_set_use_underline_internal (label, TRUE);
4427 gtk_label_recalculate (label);
4429 g_object_thaw_notify (G_OBJECT (label));
4433 gtk_label_realize (GtkWidget *widget)
4435 GtkLabel *label = GTK_LABEL (widget);
4436 GtkLabelPrivate *priv = label->priv;
4438 GTK_WIDGET_CLASS (gtk_label_parent_class)->realize (widget);
4440 if (priv->select_info)
4441 gtk_label_create_window (label);
4445 gtk_label_unrealize (GtkWidget *widget)
4447 GtkLabel *label = GTK_LABEL (widget);
4448 GtkLabelPrivate *priv = label->priv;
4450 if (priv->select_info)
4451 gtk_label_destroy_window (label);
4453 GTK_WIDGET_CLASS (gtk_label_parent_class)->unrealize (widget);
4457 gtk_label_map (GtkWidget *widget)
4459 GtkLabel *label = GTK_LABEL (widget);
4460 GtkLabelPrivate *priv = label->priv;
4462 GTK_WIDGET_CLASS (gtk_label_parent_class)->map (widget);
4464 if (priv->select_info)
4465 gdk_window_show (priv->select_info->window);
4469 gtk_label_unmap (GtkWidget *widget)
4471 GtkLabel *label = GTK_LABEL (widget);
4472 GtkLabelPrivate *priv = label->priv;
4474 if (priv->select_info)
4475 gdk_window_hide (priv->select_info->window);
4477 GTK_WIDGET_CLASS (gtk_label_parent_class)->unmap (widget);
4481 window_to_layout_coords (GtkLabel *label,
4485 GtkAllocation allocation;
4489 widget = GTK_WIDGET (label);
4491 /* get layout location in widget->window coords */
4492 get_layout_location (label, &lx, &ly);
4494 gtk_widget_get_allocation (widget, &allocation);
4498 *x += allocation.x; /* go to widget->window */
4499 *x -= lx; /* go to layout */
4504 *y += allocation.y; /* go to widget->window */
4505 *y -= ly; /* go to layout */
4511 layout_to_window_coords (GtkLabel *label,
4518 widget = GTK_WIDGET (label);
4520 /* get layout location in widget->window coords */
4521 get_layout_location (label, &lx, &ly);
4525 *x += lx; /* go to widget->window */
4526 *x -= widget->allocation.x; /* go to selection window */
4531 *y += ly; /* go to widget->window */
4532 *y -= widget->allocation.y; /* go to selection window */
4538 get_layout_index (GtkLabel *label,
4543 GtkLabelPrivate *priv = label->priv;
4545 const gchar *cluster;
4546 const gchar *cluster_end;
4551 gtk_label_ensure_layout (label);
4553 window_to_layout_coords (label, &x, &y);
4558 inside = pango_layout_xy_to_index (priv->layout,
4562 cluster = priv->text + *index;
4563 cluster_end = cluster;
4566 cluster_end = g_utf8_next_char (cluster_end);
4570 *index += (cluster_end - cluster);
4576 gtk_label_select_word (GtkLabel *label)
4578 GtkLabelPrivate *priv = label->priv;
4581 gint start_index = gtk_label_move_backward_word (label, priv->select_info->selection_end);
4582 gint end_index = gtk_label_move_forward_word (label, priv->select_info->selection_end);
4584 min = MIN (priv->select_info->selection_anchor,
4585 priv->select_info->selection_end);
4586 max = MAX (priv->select_info->selection_anchor,
4587 priv->select_info->selection_end);
4589 min = MIN (min, start_index);
4590 max = MAX (max, end_index);
4592 gtk_label_select_region_index (label, min, max);
4596 gtk_label_grab_focus (GtkWidget *widget)
4598 GtkLabel *label = GTK_LABEL (widget);
4599 GtkLabelPrivate *priv = label->priv;
4600 gboolean select_on_focus;
4603 if (priv->select_info == NULL)
4606 GTK_WIDGET_CLASS (gtk_label_parent_class)->grab_focus (widget);
4608 if (priv->select_info->selectable)
4610 g_object_get (gtk_widget_get_settings (widget),
4611 "gtk-label-select-on-focus",
4615 if (select_on_focus && !priv->in_click)
4616 gtk_label_select_region (label, 0, -1);
4620 if (priv->select_info->links && !priv->in_click)
4622 link = priv->select_info->links->data;
4623 priv->select_info->selection_anchor = link->start;
4624 priv->select_info->selection_end = link->start;
4630 gtk_label_focus (GtkWidget *widget,
4631 GtkDirectionType direction)
4633 GtkLabel *label = GTK_LABEL (widget);
4634 GtkLabelPrivate *priv = label->priv;
4635 GtkLabelSelectionInfo *info = priv->select_info;
4636 GtkLabelLink *focus_link;
4639 if (!gtk_widget_is_focus (widget))
4641 gtk_widget_grab_focus (widget);
4644 focus_link = gtk_label_get_focus_link (label);
4645 if (focus_link && direction == GTK_DIR_TAB_BACKWARD)
4647 l = g_list_last (info->links);
4648 focus_link = l->data;
4649 info->selection_anchor = focus_link->start;
4650 info->selection_end = focus_link->start;
4660 if (info->selectable)
4664 if (info->selection_anchor != info->selection_end)
4667 index = info->selection_anchor;
4669 if (direction == GTK_DIR_TAB_FORWARD)
4670 for (l = info->links; l; l = l->next)
4672 GtkLabelLink *link = l->data;
4674 if (link->start > index)
4676 gtk_label_select_region_index (label, link->start, link->start);
4680 else if (direction == GTK_DIR_TAB_BACKWARD)
4681 for (l = g_list_last (info->links); l; l = l->prev)
4683 GtkLabelLink *link = l->data;
4685 if (link->end < index)
4687 gtk_label_select_region_index (label, link->start, link->start);
4696 focus_link = gtk_label_get_focus_link (label);
4699 case GTK_DIR_TAB_FORWARD:
4702 l = g_list_find (info->links, focus_link);
4709 case GTK_DIR_TAB_BACKWARD:
4712 l = g_list_find (info->links, focus_link);
4716 l = g_list_last (info->links);
4725 focus_link = l->data;
4726 info->selection_anchor = focus_link->start;
4727 info->selection_end = focus_link->start;
4728 gtk_widget_queue_draw (widget);
4740 gtk_label_button_press (GtkWidget *widget,
4741 GdkEventButton *event)
4743 GtkLabel *label = GTK_LABEL (widget);
4744 GtkLabelPrivate *priv = label->priv;
4745 GtkLabelSelectionInfo *info = priv->select_info;
4752 if (info->active_link)
4754 if (event->button == 1)
4756 info->link_clicked = 1;
4757 gtk_widget_queue_draw (widget);
4759 else if (event->button == 3 && event->type == GDK_BUTTON_PRESS)
4761 info->link_clicked = 1;
4762 gtk_label_do_popup (label, event);
4767 if (!info->selectable)
4770 info->in_drag = FALSE;
4771 info->select_words = FALSE;
4773 if (event->button == 1)
4775 if (!gtk_widget_has_focus (widget))
4777 priv->in_click = TRUE;
4778 gtk_widget_grab_focus (widget);
4779 priv->in_click = FALSE;
4782 if (event->type == GDK_3BUTTON_PRESS)
4784 gtk_label_select_region_index (label, 0, strlen (priv->text));
4788 if (event->type == GDK_2BUTTON_PRESS)
4790 info->select_words = TRUE;
4791 gtk_label_select_word (label);
4795 get_layout_index (label, event->x, event->y, &index);
4797 min = MIN (info->selection_anchor, info->selection_end);
4798 max = MAX (info->selection_anchor, info->selection_end);
4800 if ((info->selection_anchor != info->selection_end) &&
4801 (event->state & GDK_SHIFT_MASK))
4803 /* extend (same as motion) */
4804 min = MIN (min, index);
4805 max = MAX (max, index);
4807 /* ensure the anchor is opposite index */
4815 gtk_label_select_region_index (label, min, max);
4819 if (event->type == GDK_3BUTTON_PRESS)
4820 gtk_label_select_region_index (label, 0, strlen (priv->text));
4821 else if (event->type == GDK_2BUTTON_PRESS)
4822 gtk_label_select_word (label);
4823 else if (min < max && min <= index && index <= max)
4825 info->in_drag = TRUE;
4826 info->drag_start_x = event->x;
4827 info->drag_start_y = event->y;
4830 /* start a replacement */
4831 gtk_label_select_region_index (label, index, index);
4836 else if (event->button == 3 && event->type == GDK_BUTTON_PRESS)
4838 gtk_label_do_popup (label, event);
4846 gtk_label_button_release (GtkWidget *widget,
4847 GdkEventButton *event)
4850 GtkLabel *label = GTK_LABEL (widget);
4851 GtkLabelPrivate *priv = label->priv;
4852 GtkLabelSelectionInfo *info = priv->select_info;
4862 get_layout_index (label, event->x, event->y, &index);
4863 gtk_label_select_region_index (label, index, index);
4868 if (event->button != 1)
4871 if (info->active_link &&
4872 info->selection_anchor == info->selection_end &&
4875 emit_activate_link (label, info->active_link);
4876 info->link_clicked = 0;
4881 /* The goal here is to return TRUE iff we ate the
4882 * button press to start selecting.
4888 connect_mnemonics_visible_notify (GtkLabel *label)
4890 GtkLabelPrivate *priv = label->priv;
4891 GtkWidget *toplevel;
4894 toplevel = gtk_widget_get_toplevel (GTK_WIDGET (label));
4896 if (!GTK_IS_WINDOW (toplevel))
4899 /* always set up this widgets initial value */
4900 priv->mnemonics_visible =
4901 gtk_window_get_mnemonics_visible (GTK_WINDOW (toplevel));
4904 GPOINTER_TO_INT (g_object_get_data (G_OBJECT (toplevel),
4905 "gtk-label-mnemonics-visible-connected"));
4909 g_signal_connect (toplevel,
4910 "notify::mnemonics-visible",
4911 G_CALLBACK (label_mnemonics_visible_changed),
4913 g_object_set_data (G_OBJECT (toplevel),
4914 "gtk-label-mnemonics-visible-connected",
4915 GINT_TO_POINTER (1));
4920 drag_begin_cb (GtkWidget *widget,
4921 GdkDragContext *context,
4924 GtkLabel *label = GTK_LABEL (widget);
4925 GtkLabelPrivate *priv = label->priv;
4926 cairo_surface_t *surface = NULL;
4928 g_signal_handlers_disconnect_by_func (widget, drag_begin_cb, NULL);
4930 if ((priv->select_info->selection_anchor !=
4931 priv->select_info->selection_end) &&
4937 start = MIN (priv->select_info->selection_anchor,
4938 priv->select_info->selection_end);
4939 end = MAX (priv->select_info->selection_anchor,
4940 priv->select_info->selection_end);
4942 len = strlen (priv->text);
4950 surface = _gtk_text_util_create_drag_icon (widget,
4957 gtk_drag_set_icon_surface (context, surface);
4958 cairo_surface_destroy (surface);
4962 gtk_drag_set_icon_default (context);
4967 gtk_label_motion (GtkWidget *widget,
4968 GdkEventMotion *event)
4970 GtkLabel *label = GTK_LABEL (widget);
4971 GtkLabelPrivate *priv = label->priv;
4972 GtkLabelSelectionInfo *info = priv->select_info;
4978 if (info->links && !info->in_drag)
4982 gboolean found = FALSE;
4984 if (info->selection_anchor == info->selection_end)
4986 if (get_layout_index (label, event->x, event->y, &index))
4988 for (l = info->links; l != NULL; l = l->next)
4991 if (index >= link->start && index <= link->end)
5002 if (info->active_link != link)
5004 info->link_clicked = 0;
5005 info->active_link = link;
5006 gtk_label_update_cursor (label);
5007 gtk_widget_queue_draw (widget);
5012 if (info->active_link != NULL)
5014 info->link_clicked = 0;
5015 info->active_link = NULL;
5016 gtk_label_update_cursor (label);
5017 gtk_widget_queue_draw (widget);
5022 if (!info->selectable)
5025 if ((event->state & GDK_BUTTON1_MASK) == 0)
5030 if (gtk_drag_check_threshold (widget,
5033 event->x, event->y))
5035 GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
5037 gtk_target_list_add_text_targets (target_list, 0);
5039 g_signal_connect (widget, "drag-begin",
5040 G_CALLBACK (drag_begin_cb), NULL);
5041 gtk_drag_begin (widget, target_list,
5043 1, (GdkEvent *)event);
5045 info->in_drag = FALSE;
5047 gtk_target_list_unref (target_list);
5054 gdk_window_get_device_position (info->window, event->device, &x, &y, NULL);
5055 get_layout_index (label, x, y, &index);
5057 if (info->select_words)
5060 gint old_min, old_max;
5063 min = gtk_label_move_backward_word (label, index);
5064 max = gtk_label_move_forward_word (label, index);
5066 anchor = info->selection_anchor;
5067 end = info->selection_end;
5069 old_min = MIN (anchor, end);
5070 old_max = MAX (anchor, end);
5077 else if (old_max < max)
5082 else if (anchor == old_min)
5093 gtk_label_select_region_index (label, anchor, end);
5096 gtk_label_select_region_index (label, info->selection_anchor, index);
5103 gtk_label_leave_notify (GtkWidget *widget,
5104 GdkEventCrossing *event)
5106 GtkLabel *label = GTK_LABEL (widget);
5107 GtkLabelPrivate *priv = label->priv;
5109 if (priv->select_info)
5111 priv->select_info->active_link = NULL;
5112 gtk_label_update_cursor (label);
5113 gtk_widget_queue_draw (widget);
5116 if (GTK_WIDGET_CLASS (gtk_label_parent_class)->leave_notify_event)
5117 return GTK_WIDGET_CLASS (gtk_label_parent_class)->leave_notify_event (widget, event);
5123 gtk_label_create_window (GtkLabel *label)
5125 GtkLabelPrivate *priv = label->priv;
5126 GtkAllocation allocation;
5128 GdkWindowAttr attributes;
5129 gint attributes_mask;
5131 g_assert (priv->select_info);
5132 widget = GTK_WIDGET (label);
5133 g_assert (gtk_widget_get_realized (widget));
5135 if (priv->select_info->window)
5138 gtk_widget_get_allocation (widget, &allocation);
5140 attributes.x = allocation.x;
5141 attributes.y = allocation.y;
5142 attributes.width = allocation.width;
5143 attributes.height = allocation.height;
5144 attributes.window_type = GDK_WINDOW_CHILD;
5145 attributes.wclass = GDK_INPUT_ONLY;
5146 attributes.override_redirect = TRUE;
5147 attributes.event_mask = gtk_widget_get_events (widget) |
5148 GDK_BUTTON_PRESS_MASK |
5149 GDK_BUTTON_RELEASE_MASK |
5150 GDK_LEAVE_NOTIFY_MASK |
5151 GDK_BUTTON_MOTION_MASK |
5152 GDK_POINTER_MOTION_MASK |
5153 GDK_POINTER_MOTION_HINT_MASK;
5154 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_NOREDIR;
5155 if (gtk_widget_is_sensitive (widget))
5157 attributes.cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget),
5159 attributes_mask |= GDK_WA_CURSOR;
5163 priv->select_info->window = gdk_window_new (gtk_widget_get_window (widget),
5164 &attributes, attributes_mask);
5165 gdk_window_set_user_data (priv->select_info->window, widget);
5167 if (attributes_mask & GDK_WA_CURSOR)
5168 g_object_unref (attributes.cursor);
5172 gtk_label_destroy_window (GtkLabel *label)
5174 GtkLabelPrivate *priv = label->priv;
5176 g_assert (priv->select_info);
5178 if (priv->select_info->window == NULL)
5181 gdk_window_set_user_data (priv->select_info->window, NULL);
5182 gdk_window_destroy (priv->select_info->window);
5183 priv->select_info->window = NULL;
5187 gtk_label_ensure_select_info (GtkLabel *label)
5189 GtkLabelPrivate *priv = label->priv;
5191 if (priv->select_info == NULL)
5193 priv->select_info = g_new0 (GtkLabelSelectionInfo, 1);
5195 gtk_widget_set_can_focus (GTK_WIDGET (label), TRUE);
5197 if (gtk_widget_get_realized (GTK_WIDGET (label)))
5198 gtk_label_create_window (label);
5200 if (gtk_widget_get_mapped (GTK_WIDGET (label)))
5201 gdk_window_show (priv->select_info->window);
5206 gtk_label_clear_select_info (GtkLabel *label)
5208 GtkLabelPrivate *priv = label->priv;
5210 if (priv->select_info == NULL)
5213 if (!priv->select_info->selectable && !priv->select_info->links)
5215 gtk_label_destroy_window (label);
5217 g_free (priv->select_info);
5218 priv->select_info = NULL;
5220 gtk_widget_set_can_focus (GTK_WIDGET (label), FALSE);
5225 * gtk_label_set_selectable:
5226 * @label: a #GtkLabel
5227 * @setting: %TRUE to allow selecting text in the label
5229 * Selectable labels allow the user to select text from the label, for
5233 gtk_label_set_selectable (GtkLabel *label,
5236 GtkLabelPrivate *priv;
5237 gboolean old_setting;
5239 g_return_if_fail (GTK_IS_LABEL (label));
5243 setting = setting != FALSE;
5244 old_setting = priv->select_info && priv->select_info->selectable;
5248 gtk_label_ensure_select_info (label);
5249 priv->select_info->selectable = TRUE;
5250 gtk_label_update_cursor (label);
5256 /* unselect, to give up the selection */
5257 gtk_label_select_region (label, 0, 0);
5259 priv->select_info->selectable = FALSE;
5260 gtk_label_clear_select_info (label);
5261 gtk_label_update_cursor (label);
5264 if (setting != old_setting)
5266 g_object_freeze_notify (G_OBJECT (label));
5267 g_object_notify (G_OBJECT (label), "selectable");
5268 g_object_notify (G_OBJECT (label), "cursor-position");
5269 g_object_notify (G_OBJECT (label), "selection-bound");
5270 g_object_thaw_notify (G_OBJECT (label));
5271 gtk_widget_queue_draw (GTK_WIDGET (label));
5276 * gtk_label_get_selectable:
5277 * @label: a #GtkLabel
5279 * Gets the value set by gtk_label_set_selectable().
5281 * Return value: %TRUE if the user can copy text from the label
5284 gtk_label_get_selectable (GtkLabel *label)
5286 GtkLabelPrivate *priv;
5288 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
5292 return priv->select_info && priv->select_info->selectable;
5296 * gtk_label_set_angle:
5297 * @label: a #GtkLabel
5298 * @angle: the angle that the baseline of the label makes with
5299 * the horizontal, in degrees, measured counterclockwise
5301 * Sets the angle of rotation for the label. An angle of 90 reads from
5302 * from bottom to top, an angle of 270, from top to bottom. The angle
5303 * setting for the label is ignored if the label is selectable,
5304 * wrapped, or ellipsized.
5309 gtk_label_set_angle (GtkLabel *label,
5312 GtkLabelPrivate *priv;
5314 g_return_if_fail (GTK_IS_LABEL (label));
5318 /* Canonicalize to [0,360]. We don't canonicalize 360 to 0, because
5319 * double property ranges are inclusive, and changing 360 to 0 would
5320 * make a property editor behave strangely.
5322 if (angle < 0 || angle > 360.0)
5323 angle = angle - 360. * floor (angle / 360.);
5325 if (priv->angle != angle)
5327 priv->angle = angle;
5329 gtk_label_clear_layout (label);
5330 gtk_widget_queue_resize (GTK_WIDGET (label));
5332 g_object_notify (G_OBJECT (label), "angle");
5337 * gtk_label_get_angle:
5338 * @label: a #GtkLabel
5340 * Gets the angle of rotation for the label. See
5341 * gtk_label_set_angle().
5343 * Return value: the angle of rotation for the label
5348 gtk_label_get_angle (GtkLabel *label)
5350 g_return_val_if_fail (GTK_IS_LABEL (label), 0.0);
5352 return label->priv->angle;
5356 gtk_label_set_selection_text (GtkLabel *label,
5357 GtkSelectionData *selection_data)
5359 GtkLabelPrivate *priv = label->priv;
5361 if ((priv->select_info->selection_anchor !=
5362 priv->select_info->selection_end) &&
5368 start = MIN (priv->select_info->selection_anchor,
5369 priv->select_info->selection_end);
5370 end = MAX (priv->select_info->selection_anchor,
5371 priv->select_info->selection_end);
5373 len = strlen (priv->text);
5381 gtk_selection_data_set_text (selection_data,
5388 gtk_label_drag_data_get (GtkWidget *widget,
5389 GdkDragContext *context,
5390 GtkSelectionData *selection_data,
5394 gtk_label_set_selection_text (GTK_LABEL (widget), selection_data);
5398 get_text_callback (GtkClipboard *clipboard,
5399 GtkSelectionData *selection_data,
5401 gpointer user_data_or_owner)
5403 gtk_label_set_selection_text (GTK_LABEL (user_data_or_owner), selection_data);
5407 clear_text_callback (GtkClipboard *clipboard,
5408 gpointer user_data_or_owner)
5411 GtkLabelPrivate *priv;
5413 label = GTK_LABEL (user_data_or_owner);
5416 if (priv->select_info)
5418 priv->select_info->selection_anchor = priv->select_info->selection_end;
5420 gtk_widget_queue_draw (GTK_WIDGET (label));
5425 gtk_label_select_region_index (GtkLabel *label,
5429 GtkLabelPrivate *priv;
5431 g_return_if_fail (GTK_IS_LABEL (label));
5435 if (priv->select_info && priv->select_info->selectable)
5437 GtkClipboard *clipboard;
5439 if (priv->select_info->selection_anchor == anchor_index &&
5440 priv->select_info->selection_end == end_index)
5443 priv->select_info->selection_anchor = anchor_index;
5444 priv->select_info->selection_end = end_index;
5446 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (label),
5447 GDK_SELECTION_PRIMARY);
5449 if (anchor_index != end_index)
5451 GtkTargetList *list;
5452 GtkTargetEntry *targets;
5455 list = gtk_target_list_new (NULL, 0);
5456 gtk_target_list_add_text_targets (list, 0);
5457 targets = gtk_target_table_new_from_list (list, &n_targets);
5459 gtk_clipboard_set_with_owner (clipboard,
5462 clear_text_callback,
5465 gtk_target_table_free (targets, n_targets);
5466 gtk_target_list_unref (list);
5470 if (gtk_clipboard_get_owner (clipboard) == G_OBJECT (label))
5471 gtk_clipboard_clear (clipboard);
5474 gtk_widget_queue_draw (GTK_WIDGET (label));
5476 g_object_freeze_notify (G_OBJECT (label));
5477 g_object_notify (G_OBJECT (label), "cursor-position");
5478 g_object_notify (G_OBJECT (label), "selection-bound");
5479 g_object_thaw_notify (G_OBJECT (label));
5484 * gtk_label_select_region:
5485 * @label: a #GtkLabel
5486 * @start_offset: start offset (in characters not bytes)
5487 * @end_offset: end offset (in characters not bytes)
5489 * Selects a range of characters in the label, if the label is selectable.
5490 * See gtk_label_set_selectable(). If the label is not selectable,
5491 * this function has no effect. If @start_offset or
5492 * @end_offset are -1, then the end of the label will be substituted.
5495 gtk_label_select_region (GtkLabel *label,
5499 GtkLabelPrivate *priv;
5501 g_return_if_fail (GTK_IS_LABEL (label));
5505 if (priv->text && priv->select_info)
5507 if (start_offset < 0)
5508 start_offset = g_utf8_strlen (priv->text, -1);
5511 end_offset = g_utf8_strlen (priv->text, -1);
5513 gtk_label_select_region_index (label,
5514 g_utf8_offset_to_pointer (priv->text, start_offset) - priv->text,
5515 g_utf8_offset_to_pointer (priv->text, end_offset) - priv->text);
5520 * gtk_label_get_selection_bounds:
5521 * @label: a #GtkLabel
5522 * @start: (out): return location for start of selection, as a character offset
5523 * @end: (out): return location for end of selection, as a character offset
5525 * Gets the selected range of characters in the label, returning %TRUE
5526 * if there's a selection.
5528 * Return value: %TRUE if selection is non-empty
5531 gtk_label_get_selection_bounds (GtkLabel *label,
5535 GtkLabelPrivate *priv;
5537 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
5541 if (priv->select_info == NULL)
5543 /* not a selectable label */
5553 gint start_index, end_index;
5554 gint start_offset, end_offset;
5557 start_index = MIN (priv->select_info->selection_anchor,
5558 priv->select_info->selection_end);
5559 end_index = MAX (priv->select_info->selection_anchor,
5560 priv->select_info->selection_end);
5562 len = strlen (priv->text);
5564 if (end_index > len)
5567 if (start_index > len)
5570 start_offset = g_utf8_strlen (priv->text, start_index);
5571 end_offset = g_utf8_strlen (priv->text, end_index);
5573 if (start_offset > end_offset)
5575 gint tmp = start_offset;
5576 start_offset = end_offset;
5581 *start = start_offset;
5586 return start_offset != end_offset;
5592 * gtk_label_get_layout:
5593 * @label: a #GtkLabel
5595 * Gets the #PangoLayout used to display the label.
5596 * The layout is useful to e.g. convert text positions to
5597 * pixel positions, in combination with gtk_label_get_layout_offsets().
5598 * The returned layout is owned by the @label so need not be
5599 * freed by the caller. The @label is free to recreate its layout at
5600 * any time, so it should be considered read-only.
5602 * Return value: (transfer none): the #PangoLayout for this label
5605 gtk_label_get_layout (GtkLabel *label)
5607 GtkLabelPrivate *priv;
5609 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
5613 gtk_label_ensure_layout (label);
5615 return priv->layout;
5619 * gtk_label_get_layout_offsets:
5620 * @label: a #GtkLabel
5621 * @x: (out) (allow-none): location to store X offset of layout, or %NULL
5622 * @y: (out) (allow-none): location to store Y offset of layout, or %NULL
5624 * Obtains the coordinates where the label will draw the #PangoLayout
5625 * representing the text in the label; useful to convert mouse events
5626 * into coordinates inside the #PangoLayout, e.g. to take some action
5627 * if some part of the label is clicked. Of course you will need to
5628 * create a #GtkEventBox to receive the events, and pack the label
5629 * inside it, since labels are a #GTK_NO_WINDOW widget. Remember
5630 * when using the #PangoLayout functions you need to convert to
5631 * and from pixels using PANGO_PIXELS() or #PANGO_SCALE.
5634 gtk_label_get_layout_offsets (GtkLabel *label,
5638 g_return_if_fail (GTK_IS_LABEL (label));
5640 gtk_label_ensure_layout (label);
5642 get_layout_location (label, x, y);
5646 * gtk_label_set_use_markup:
5647 * @label: a #GtkLabel
5648 * @setting: %TRUE if the label's text should be parsed for markup.
5650 * Sets whether the text of the label contains markup in <link
5651 * linkend="PangoMarkupFormat">Pango's text markup
5652 * language</link>. See gtk_label_set_markup().
5655 gtk_label_set_use_markup (GtkLabel *label,
5658 g_return_if_fail (GTK_IS_LABEL (label));
5660 gtk_label_set_use_markup_internal (label, setting);
5661 gtk_label_recalculate (label);
5665 * gtk_label_get_use_markup:
5666 * @label: a #GtkLabel
5668 * Returns whether the label's text is interpreted as marked up with
5669 * the <link linkend="PangoMarkupFormat">Pango text markup
5670 * language</link>. See gtk_label_set_use_markup ().
5672 * Return value: %TRUE if the label's text will be parsed for markup.
5675 gtk_label_get_use_markup (GtkLabel *label)
5677 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
5679 return label->priv->use_markup;
5683 * gtk_label_set_use_underline:
5684 * @label: a #GtkLabel
5685 * @setting: %TRUE if underlines in the text indicate mnemonics
5687 * If true, an underline in the text indicates the next character should be
5688 * used for the mnemonic accelerator key.
5691 gtk_label_set_use_underline (GtkLabel *label,
5694 g_return_if_fail (GTK_IS_LABEL (label));
5696 gtk_label_set_use_underline_internal (label, setting);
5697 gtk_label_recalculate (label);
5701 * gtk_label_get_use_underline:
5702 * @label: a #GtkLabel
5704 * Returns whether an embedded underline in the label indicates a
5705 * mnemonic. See gtk_label_set_use_underline().
5707 * Return value: %TRUE whether an embedded underline in the label indicates
5708 * the mnemonic accelerator keys.
5711 gtk_label_get_use_underline (GtkLabel *label)
5713 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
5715 return label->priv->use_underline;
5719 * gtk_label_set_single_line_mode:
5720 * @label: a #GtkLabel
5721 * @single_line_mode: %TRUE if the label should be in single line mode
5723 * Sets whether the label is in single line mode.
5728 gtk_label_set_single_line_mode (GtkLabel *label,
5729 gboolean single_line_mode)
5731 GtkLabelPrivate *priv;
5733 g_return_if_fail (GTK_IS_LABEL (label));
5737 single_line_mode = single_line_mode != FALSE;
5739 if (priv->single_line_mode != single_line_mode)
5741 priv->single_line_mode = single_line_mode;
5743 gtk_label_clear_layout (label);
5744 gtk_widget_queue_resize (GTK_WIDGET (label));
5746 g_object_notify (G_OBJECT (label), "single-line-mode");
5751 * gtk_label_get_single_line_mode:
5752 * @label: a #GtkLabel
5754 * Returns whether the label is in single line mode.
5756 * Return value: %TRUE when the label is in single line mode.
5761 gtk_label_get_single_line_mode (GtkLabel *label)
5763 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
5765 return label->priv->single_line_mode;
5768 /* Compute the X position for an offset that corresponds to the "more important
5769 * cursor position for that offset. We use this when trying to guess to which
5770 * end of the selection we should go to when the user hits the left or
5774 get_better_cursor (GtkLabel *label,
5779 GtkLabelPrivate *priv = label->priv;
5780 GdkKeymap *keymap = gdk_keymap_get_for_display (gtk_widget_get_display (GTK_WIDGET (label)));
5781 PangoDirection keymap_direction = gdk_keymap_get_direction (keymap);
5782 PangoDirection cursor_direction = get_cursor_direction (label);
5783 gboolean split_cursor;
5784 PangoRectangle strong_pos, weak_pos;
5786 g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
5787 "gtk-split-cursor", &split_cursor,
5790 gtk_label_ensure_layout (label);
5792 pango_layout_get_cursor_pos (priv->layout, index,
5793 &strong_pos, &weak_pos);
5797 *x = strong_pos.x / PANGO_SCALE;
5798 *y = strong_pos.y / PANGO_SCALE;
5802 if (keymap_direction == cursor_direction)
5804 *x = strong_pos.x / PANGO_SCALE;
5805 *y = strong_pos.y / PANGO_SCALE;
5809 *x = weak_pos.x / PANGO_SCALE;
5810 *y = weak_pos.y / PANGO_SCALE;
5817 gtk_label_move_logically (GtkLabel *label,
5821 GtkLabelPrivate *priv = label->priv;
5822 gint offset = g_utf8_pointer_to_offset (priv->text,
5823 priv->text + start);
5827 PangoLogAttr *log_attrs;
5831 gtk_label_ensure_layout (label);
5833 length = g_utf8_strlen (priv->text, -1);
5835 pango_layout_get_log_attrs (priv->layout, &log_attrs, &n_attrs);
5837 while (count > 0 && offset < length)
5841 while (offset < length && !log_attrs[offset].is_cursor_position);
5845 while (count < 0 && offset > 0)
5849 while (offset > 0 && !log_attrs[offset].is_cursor_position);
5857 return g_utf8_offset_to_pointer (priv->text, offset) - priv->text;
5861 gtk_label_move_visually (GtkLabel *label,
5865 GtkLabelPrivate *priv = label->priv;
5872 int new_index, new_trailing;
5873 gboolean split_cursor;
5876 gtk_label_ensure_layout (label);
5878 g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
5879 "gtk-split-cursor", &split_cursor,
5886 GdkKeymap *keymap = gdk_keymap_get_for_display (gtk_widget_get_display (GTK_WIDGET (label)));
5887 PangoDirection keymap_direction = gdk_keymap_get_direction (keymap);
5889 strong = keymap_direction == get_cursor_direction (label);
5894 pango_layout_move_cursor_visually (priv->layout, strong, index, 0, 1, &new_index, &new_trailing);
5899 pango_layout_move_cursor_visually (priv->layout, strong, index, 0, -1, &new_index, &new_trailing);
5903 if (new_index < 0 || new_index == G_MAXINT)
5908 while (new_trailing--)
5909 index = g_utf8_next_char (priv->text + new_index) - priv->text;
5916 gtk_label_move_forward_word (GtkLabel *label,
5919 GtkLabelPrivate *priv = label->priv;
5920 gint new_pos = g_utf8_pointer_to_offset (priv->text,
5921 priv->text + start);
5924 length = g_utf8_strlen (priv->text, -1);
5925 if (new_pos < length)
5927 PangoLogAttr *log_attrs;
5930 gtk_label_ensure_layout (label);
5932 pango_layout_get_log_attrs (priv->layout, &log_attrs, &n_attrs);
5934 /* Find the next word end */
5936 while (new_pos < n_attrs && !log_attrs[new_pos].is_word_end)
5942 return g_utf8_offset_to_pointer (priv->text, new_pos) - priv->text;
5947 gtk_label_move_backward_word (GtkLabel *label,
5950 GtkLabelPrivate *priv = label->priv;
5951 gint new_pos = g_utf8_pointer_to_offset (priv->text,
5952 priv->text + start);
5956 PangoLogAttr *log_attrs;
5959 gtk_label_ensure_layout (label);
5961 pango_layout_get_log_attrs (priv->layout, &log_attrs, &n_attrs);
5965 /* Find the previous word beginning */
5966 while (new_pos > 0 && !log_attrs[new_pos].is_word_start)
5972 return g_utf8_offset_to_pointer (priv->text, new_pos) - priv->text;
5976 gtk_label_move_cursor (GtkLabel *label,
5977 GtkMovementStep step,
5979 gboolean extend_selection)
5981 GtkLabelPrivate *priv = label->priv;
5985 if (priv->select_info == NULL)
5988 old_pos = new_pos = priv->select_info->selection_end;
5990 if (priv->select_info->selection_end != priv->select_info->selection_anchor &&
5993 /* If we have a current selection and aren't extending it, move to the
5994 * start/or end of the selection as appropriate
5998 case GTK_MOVEMENT_VISUAL_POSITIONS:
6001 gint anchor_x, anchor_y;
6002 gboolean end_is_left;
6004 get_better_cursor (label, priv->select_info->selection_end, &end_x, &end_y);
6005 get_better_cursor (label, priv->select_info->selection_anchor, &anchor_x, &anchor_y);
6007 end_is_left = (end_y < anchor_y) || (end_y == anchor_y && end_x < anchor_x);
6010 new_pos = end_is_left ? priv->select_info->selection_end : priv->select_info->selection_anchor;
6012 new_pos = !end_is_left ? priv->select_info->selection_end : priv->select_info->selection_anchor;
6015 case GTK_MOVEMENT_LOGICAL_POSITIONS:
6016 case GTK_MOVEMENT_WORDS:
6018 new_pos = MIN (priv->select_info->selection_end, priv->select_info->selection_anchor);
6020 new_pos = MAX (priv->select_info->selection_end, priv->select_info->selection_anchor);
6022 case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
6023 case GTK_MOVEMENT_PARAGRAPH_ENDS:
6024 case GTK_MOVEMENT_BUFFER_ENDS:
6025 /* FIXME: Can do better here */
6026 new_pos = count < 0 ? 0 : strlen (priv->text);
6028 case GTK_MOVEMENT_DISPLAY_LINES:
6029 case GTK_MOVEMENT_PARAGRAPHS:
6030 case GTK_MOVEMENT_PAGES:
6031 case GTK_MOVEMENT_HORIZONTAL_PAGES:
6039 case GTK_MOVEMENT_LOGICAL_POSITIONS:
6040 new_pos = gtk_label_move_logically (label, new_pos, count);
6042 case GTK_MOVEMENT_VISUAL_POSITIONS:
6043 new_pos = gtk_label_move_visually (label, new_pos, count);
6044 if (new_pos == old_pos)
6046 if (!extend_selection)
6048 if (!gtk_widget_keynav_failed (GTK_WIDGET (label),
6050 GTK_DIR_RIGHT : GTK_DIR_LEFT))
6052 GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (label));
6055 gtk_widget_child_focus (toplevel,
6057 GTK_DIR_RIGHT : GTK_DIR_LEFT);
6062 gtk_widget_error_bell (GTK_WIDGET (label));
6066 case GTK_MOVEMENT_WORDS:
6069 new_pos = gtk_label_move_forward_word (label, new_pos);
6074 new_pos = gtk_label_move_backward_word (label, new_pos);
6077 if (new_pos == old_pos)
6078 gtk_widget_error_bell (GTK_WIDGET (label));
6080 case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
6081 case GTK_MOVEMENT_PARAGRAPH_ENDS:
6082 case GTK_MOVEMENT_BUFFER_ENDS:
6083 /* FIXME: Can do better here */
6084 new_pos = count < 0 ? 0 : strlen (priv->text);
6085 if (new_pos == old_pos)
6086 gtk_widget_error_bell (GTK_WIDGET (label));
6088 case GTK_MOVEMENT_DISPLAY_LINES:
6089 case GTK_MOVEMENT_PARAGRAPHS:
6090 case GTK_MOVEMENT_PAGES:
6091 case GTK_MOVEMENT_HORIZONTAL_PAGES:
6096 if (extend_selection)
6097 gtk_label_select_region_index (label,
6098 priv->select_info->selection_anchor,
6101 gtk_label_select_region_index (label, new_pos, new_pos);
6105 gtk_label_copy_clipboard (GtkLabel *label)
6107 GtkLabelPrivate *priv = label->priv;
6109 if (priv->text && priv->select_info)
6113 GtkClipboard *clipboard;
6115 start = MIN (priv->select_info->selection_anchor,
6116 priv->select_info->selection_end);
6117 end = MAX (priv->select_info->selection_anchor,
6118 priv->select_info->selection_end);
6120 len = strlen (priv->text);
6128 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (label), GDK_SELECTION_CLIPBOARD);
6131 gtk_clipboard_set_text (clipboard, priv->text + start, end - start);
6136 link = gtk_label_get_focus_link (label);
6138 gtk_clipboard_set_text (clipboard, link->uri, -1);
6144 gtk_label_select_all (GtkLabel *label)
6146 GtkLabelPrivate *priv = label->priv;
6148 gtk_label_select_region_index (label, 0, strlen (priv->text));
6151 /* Quick hack of a popup menu
6154 activate_cb (GtkWidget *menuitem,
6157 const gchar *signal = g_object_get_data (G_OBJECT (menuitem), "gtk-signal");
6158 g_signal_emit_by_name (label, signal);
6162 append_action_signal (GtkLabel *label,
6164 const gchar *stock_id,
6165 const gchar *signal,
6168 GtkWidget *menuitem = gtk_image_menu_item_new_from_stock (stock_id, NULL);
6170 g_object_set_data (G_OBJECT (menuitem), I_("gtk-signal"), (char *)signal);
6171 g_signal_connect (menuitem, "activate",
6172 G_CALLBACK (activate_cb), label);
6174 gtk_widget_set_sensitive (menuitem, sensitive);
6176 gtk_widget_show (menuitem);
6177 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6181 popup_menu_detach (GtkWidget *attach_widget,
6184 GtkLabel *label = GTK_LABEL (attach_widget);
6185 GtkLabelPrivate *priv = label->priv;
6187 if (priv->select_info)
6188 priv->select_info->popup_menu = NULL;
6192 popup_position_func (GtkMenu *menu,
6200 GtkAllocation allocation;
6204 label = GTK_LABEL (user_data);
6205 widget = GTK_WIDGET (label);
6207 g_return_if_fail (gtk_widget_get_realized (widget));
6209 screen = gtk_widget_get_screen (widget);
6210 gdk_window_get_origin (gtk_widget_get_window (widget), x, y);
6212 gtk_widget_get_allocation (widget, &allocation);
6217 gtk_widget_get_preferred_size (GTK_WIDGET (menu),
6220 gtk_widget_get_allocation (widget, &allocation);
6222 *x += allocation.width / 2;
6223 *y += allocation.height;
6225 *x = CLAMP (*x, 0, MAX (0, gdk_screen_get_width (screen) - req.width));
6226 *y = CLAMP (*y, 0, MAX (0, gdk_screen_get_height (screen) - req.height));
6230 open_link_activate_cb (GtkMenuItem *menu_item,
6235 link = gtk_label_get_current_link (label);
6238 emit_activate_link (label, link);
6242 copy_link_activate_cb (GtkMenuItem *menu_item,
6245 GtkClipboard *clipboard;
6248 uri = gtk_label_get_current_uri (label);
6251 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (label), GDK_SELECTION_CLIPBOARD);
6252 gtk_clipboard_set_text (clipboard, uri, -1);
6257 gtk_label_popup_menu (GtkWidget *widget)
6259 gtk_label_do_popup (GTK_LABEL (widget), NULL);
6265 gtk_label_do_popup (GtkLabel *label,
6266 GdkEventButton *event)
6268 GtkLabelPrivate *priv = label->priv;
6269 GtkWidget *menuitem;
6272 gboolean have_selection;
6275 if (!priv->select_info)
6278 if (priv->select_info->popup_menu)
6279 gtk_widget_destroy (priv->select_info->popup_menu);
6281 priv->select_info->popup_menu = menu = gtk_menu_new ();
6283 gtk_menu_attach_to_widget (GTK_MENU (menu), GTK_WIDGET (label), popup_menu_detach);
6286 priv->select_info->selection_anchor != priv->select_info->selection_end;
6290 if (priv->select_info->link_clicked)
6291 link = priv->select_info->active_link;
6296 link = gtk_label_get_focus_link (label);
6298 if (!have_selection && link)
6301 menuitem = gtk_image_menu_item_new_with_mnemonic (_("_Open Link"));
6302 gtk_widget_show (menuitem);
6303 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6305 g_signal_connect (G_OBJECT (menuitem), "activate",
6306 G_CALLBACK (open_link_activate_cb), label);
6308 image = gtk_image_new_from_stock (GTK_STOCK_JUMP_TO, GTK_ICON_SIZE_MENU);
6309 gtk_widget_show (image);
6310 gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (menuitem), image);
6312 /* Copy Link Address */
6313 menuitem = gtk_image_menu_item_new_with_mnemonic (_("Copy _Link Address"));
6314 gtk_widget_show (menuitem);
6315 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6317 g_signal_connect (G_OBJECT (menuitem), "activate",
6318 G_CALLBACK (copy_link_activate_cb), label);
6320 image = gtk_image_new_from_stock (GTK_STOCK_COPY, GTK_ICON_SIZE_MENU);
6321 gtk_widget_show (image);
6322 gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (menuitem), image);
6326 append_action_signal (label, menu, GTK_STOCK_CUT, "cut-clipboard", FALSE);
6327 append_action_signal (label, menu, GTK_STOCK_COPY, "copy-clipboard", have_selection);
6328 append_action_signal (label, menu, GTK_STOCK_PASTE, "paste-clipboard", FALSE);
6330 menuitem = gtk_image_menu_item_new_from_stock (GTK_STOCK_DELETE, NULL);
6331 gtk_widget_set_sensitive (menuitem, FALSE);
6332 gtk_widget_show (menuitem);
6333 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6335 menuitem = gtk_separator_menu_item_new ();
6336 gtk_widget_show (menuitem);
6337 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6339 menuitem = gtk_image_menu_item_new_from_stock (GTK_STOCK_SELECT_ALL, NULL);
6340 g_signal_connect_swapped (menuitem, "activate",
6341 G_CALLBACK (gtk_label_select_all), label);
6342 gtk_widget_show (menuitem);
6343 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6346 g_signal_emit (label, signals[POPULATE_POPUP], 0, menu);
6349 gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
6351 event->button, event->time);
6354 gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
6355 popup_position_func, label,
6356 0, gtk_get_current_event_time ());
6357 gtk_menu_shell_select_first (GTK_MENU_SHELL (menu), FALSE);
6362 gtk_label_clear_links (GtkLabel *label)
6364 GtkLabelPrivate *priv = label->priv;
6366 if (!priv->select_info)
6369 g_list_foreach (priv->select_info->links, (GFunc)link_free, NULL);
6370 g_list_free (priv->select_info->links);
6371 priv->select_info->links = NULL;
6372 priv->select_info->active_link = NULL;
6376 gtk_label_rescan_links (GtkLabel *label)
6378 GtkLabelPrivate *priv = label->priv;
6379 PangoLayout *layout = priv->layout;
6380 PangoAttrList *attlist;
6381 PangoAttrIterator *iter;
6384 if (!priv->select_info || !priv->select_info->links)
6387 attlist = pango_layout_get_attributes (layout);
6389 if (attlist == NULL)
6392 iter = pango_attr_list_get_iterator (attlist);
6394 links = priv->select_info->links;
6398 PangoAttribute *underline;
6399 PangoAttribute *color;
6401 underline = pango_attr_iterator_get (iter, PANGO_ATTR_UNDERLINE);
6402 color = pango_attr_iterator_get (iter, PANGO_ATTR_FOREGROUND);
6404 if (underline != NULL && color != NULL)
6407 PangoRectangle start_pos;
6408 PangoRectangle end_pos;
6411 pango_attr_iterator_range (iter, &start, &end);
6412 pango_layout_index_to_pos (layout, start, &start_pos);
6413 pango_layout_index_to_pos (layout, end, &end_pos);
6417 g_warning ("Ran out of links");
6421 links = links->next;
6422 link->start = start;
6425 } while (pango_attr_iterator_next (iter));
6427 pango_attr_iterator_destroy (iter);
6431 gtk_label_activate_link (GtkLabel *label,
6434 GtkWidget *widget = GTK_WIDGET (label);
6435 GError *error = NULL;
6437 if (!gtk_show_uri (gtk_widget_get_screen (widget),
6438 uri, gtk_get_current_event_time (), &error))
6440 g_warning ("Unable to show '%s': %s", uri, error->message);
6441 g_error_free (error);
6448 emit_activate_link (GtkLabel *label,
6451 GtkLabelPrivate *priv = label->priv;
6454 g_signal_emit (label, signals[ACTIVATE_LINK], 0, link->uri, &handled);
6455 if (handled && priv->track_links && !link->visited)
6457 link->visited = TRUE;
6458 /* FIXME: shouldn't have to redo everything here */
6459 gtk_label_recalculate (label);
6464 gtk_label_activate_current_link (GtkLabel *label)
6467 GtkWidget *widget = GTK_WIDGET (label);
6469 link = gtk_label_get_focus_link (label);
6473 emit_activate_link (label, link);
6477 GtkWidget *toplevel;
6479 GtkWidget *default_widget, *focus_widget;
6481 toplevel = gtk_widget_get_toplevel (widget);
6482 if (GTK_IS_WINDOW (toplevel))
6484 window = GTK_WINDOW (toplevel);
6488 default_widget = gtk_window_get_default_widget (window);
6489 focus_widget = gtk_window_get_focus (window);
6491 if (default_widget != widget &&
6492 !(widget == focus_widget && (!default_widget || !gtk_widget_is_sensitive (default_widget))))
6493 gtk_window_activate_default (window);
6499 static GtkLabelLink *
6500 gtk_label_get_current_link (GtkLabel *label)
6502 GtkLabelPrivate *priv = label->priv;
6505 if (!priv->select_info)
6508 if (priv->select_info->link_clicked)
6509 link = priv->select_info->active_link;
6511 link = gtk_label_get_focus_link (label);
6517 * gtk_label_get_current_uri:
6518 * @label: a #GtkLabel
6520 * Returns the URI for the currently active link in the label.
6521 * The active link is the one under the mouse pointer or, in a
6522 * selectable label, the link in which the text cursor is currently
6525 * This function is intended for use in a #GtkLabel::activate-link handler
6526 * or for use in a #GtkWidget::query-tooltip handler.
6528 * Returns: the currently active URI. The string is owned by GTK+ and must
6529 * not be freed or modified.
6533 G_CONST_RETURN gchar *
6534 gtk_label_get_current_uri (GtkLabel *label)
6538 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
6540 link = gtk_label_get_current_link (label);
6549 * gtk_label_set_track_visited_links:
6550 * @label: a #GtkLabel
6551 * @track_links: %TRUE to track visited links
6553 * Sets whether the label should keep track of clicked
6554 * links (and use a different color for them).
6559 gtk_label_set_track_visited_links (GtkLabel *label,
6560 gboolean track_links)
6562 GtkLabelPrivate *priv;
6564 g_return_if_fail (GTK_IS_LABEL (label));
6568 track_links = track_links != FALSE;
6570 if (priv->track_links != track_links)
6572 priv->track_links = track_links;
6574 /* FIXME: shouldn't have to redo everything here */
6575 gtk_label_recalculate (label);
6577 g_object_notify (G_OBJECT (label), "track-visited-links");
6582 * gtk_label_get_track_visited_links:
6583 * @label: a #GtkLabel
6585 * Returns whether the label is currently keeping track
6588 * Returns: %TRUE if clicked links are remembered
6593 gtk_label_get_track_visited_links (GtkLabel *label)
6595 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
6597 return label->priv->track_links;
6601 gtk_label_query_tooltip (GtkWidget *widget,
6604 gboolean keyboard_tip,
6605 GtkTooltip *tooltip)
6607 GtkLabel *label = GTK_LABEL (widget);
6608 GtkLabelPrivate *priv = label->priv;
6609 GtkLabelSelectionInfo *info = priv->select_info;
6613 if (info && info->links)
6617 if (info->selection_anchor == info->selection_end)
6618 index = info->selection_anchor;
6622 if (!get_layout_index (label, x, y, &index))
6628 for (l = info->links; l != NULL; l = l->next)
6630 GtkLabelLink *link = l->data;
6631 if (index >= link->start && index <= link->end)
6635 gtk_tooltip_set_markup (tooltip, link->title);
6644 return GTK_WIDGET_CLASS (gtk_label_parent_class)->query_tooltip (widget,