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 "gtkmarshalers.h"
36 #include "gtkwindow.h"
37 #include "gtkclipboard.h"
38 #include "gtkimagemenuitem.h"
40 #include "gtkseparatormenuitem.h"
41 #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"
56 #include "a11y/gtklabelaccessible.h"
58 /* this is in case rint() is not provided by the compiler,
59 * such as in the case of C89 compilers, like MSVC
61 #include "fallback-c89.c"
65 * @Short_description: A widget that displays a small to medium amount of text
68 * The #GtkLabel widget displays a small amount of text. As the name
69 * implies, most labels are used to label another widget such as a
70 * #GtkButton, a #GtkMenuItem, or a #GtkOptionMenu.
72 * <refsect2 id="GtkLabel-BUILDER-UI">
73 * <title>GtkLabel as GtkBuildable</title>
75 * The GtkLabel implementation of the GtkBuildable interface supports a
76 * custom <attributes> element, which supports any number of <attribute>
77 * elements. the <attribute> element has attributes named name, value,
78 * start and end and allows you to specify #PangoAttribute values for this label.
81 * <title>A UI definition fragment specifying Pango attributes</title>
82 * <programlisting><![CDATA[
83 * <object class="GtkLabel">
85 * <attribute name="weight" value="PANGO_WEIGHT_BOLD"/>
86 * <attribute name="background" value="red" start="5" end="10"/>"
89 * ]]></programlisting>
91 * The start and end attributes specify the range of characters to which the
92 * Pango attribute applies. If start and end are not specified, the attribute is
93 * applied to the whole text. Note that specifying ranges does not make much
94 * sense with translatable attributes. Use markup embedded in the translatable
99 * <title>Mnemonics</title>
101 * Labels may contain <firstterm>mnemonics</firstterm>. Mnemonics are
102 * underlined characters in the label, used for keyboard navigation.
103 * Mnemonics are created by providing a string with an underscore before
104 * the mnemonic character, such as <literal>"_File"</literal>, to the
105 * functions gtk_label_new_with_mnemonic() or
106 * gtk_label_set_text_with_mnemonic().
108 * Mnemonics automatically activate any activatable widget the label is
109 * inside, such as a #GtkButton; if the label is not inside the
110 * mnemonic's target widget, you have to tell the label about the target
111 * using gtk_label_set_mnemonic_widget(). Here's a simple example where
112 * the label is inside a button:
116 * // Pressing Alt+H will activate this button
117 * button = gtk_button_new (<!-- -->);
118 * label = gtk_label_new_with_mnemonic ("_Hello");
119 * gtk_container_add (GTK_CONTAINER (button), label);
123 * There's a convenience function to create buttons with a mnemonic label
128 * // Pressing Alt+H will activate this button
129 * button = gtk_button_new_with_mnemonic ("_Hello");
133 * To create a mnemonic for a widget alongside the label, such as a
134 * #GtkEntry, you have to point the label at the entry with
135 * gtk_label_set_mnemonic_widget():
139 * // Pressing Alt+H will focus the entry
140 * entry = gtk_entry_new (<!-- -->);
141 * label = gtk_label_new_with_mnemonic ("_Hello");
142 * gtk_label_set_mnemonic_widget (GTK_LABEL (label), entry);
148 * <title>Markup (styled text)</title>
150 * To make it easy to format text in a label (changing colors, fonts,
151 * etc.), label text can be provided in a simple <link
152 * linkend="PangoMarkupFormat">markup format</link>.
153 * Here's how to create a label with a small font:
157 * label = gtk_label_new (NULL);
158 * gtk_label_set_markup (GTK_LABEL (label), "<small>Small text</small>");
163 * linkend="PangoMarkupFormat">complete documentation</link> of available
164 * tags in the Pango manual.)
166 * The markup passed to gtk_label_set_markup() must be valid; for example,
167 * literal <, > and & characters must be escaped as \<,
168 * \gt;, and \&. If you pass text obtained from the user, file,
169 * or a network to gtk_label_set_markup(), you'll want to escape it with
170 * g_markup_escape_text() or g_markup_printf_escaped().
172 * Markup strings are just a convenient way to set the #PangoAttrList on
173 * a label; gtk_label_set_attributes() may be a simpler way to set
174 * attributes in some cases. Be careful though; #PangoAttrList tends to
175 * cause internationalization problems, unless you're applying attributes
176 * to the entire string (i.e. unless you set the range of each attribute
177 * to [0, %G_MAXINT)). The reason is that specifying the start_index and
178 * end_index for a #PangoAttribute requires knowledge of the exact string
179 * being displayed, so translations will cause problems.
183 * <title>Selectable labels</title>
184 * Labels can be made selectable with gtk_label_set_selectable().
185 * Selectable labels allow the user to copy the label contents to
186 * the clipboard. Only labels that contain useful-to-copy information
187 * — such as error messages — should be made selectable.
189 * <refsect2 id="label-text-layout">
190 * <title>Text layout</title>
192 * A label can contain any number of paragraphs, but will have
193 * performance problems if it contains more than a small number.
194 * Paragraphs are separated by newlines or other paragraph separators
195 * understood by Pango.
197 * Labels can automatically wrap text if you call
198 * gtk_label_set_line_wrap().
200 * gtk_label_set_justify() sets how the lines in a label align
201 * with one another. If you want to set how the label as a whole
202 * aligns in its available space, see gtk_misc_set_alignment().
204 * The #GtkLabel:width-chars and #GtkLabel:max-width-chars properties
205 * can be used to control the size allocation of ellipsized or wrapped
206 * labels. For ellipsizing labels, if either is specified (and less
207 * than the actual text size), it is used as the minimum width, and the actual
208 * text size is used as the natural width of the label. For wrapping labels,
209 * width-chars is used as the minimum width, if specified, and max-width-chars
210 * is used as the natural width. Even if max-width-chars specified, wrapping
211 * labels will be rewrapped to use all of the available width.
214 * Note that the interpretation of #GtkLabel:width-chars and
215 * #GtkLabel:max-width-chars has changed a bit with the introduction of
216 * <link linkend="geometry-management">width-for-height geometry management.</link>
221 * <title>Links</title>
223 * Since 2.18, GTK+ supports markup for clickable hyperlinks in addition
224 * to regular Pango markup. The markup for links is borrowed from HTML, using the
225 * <tag>a</tag> with href and title attributes. GTK+ renders links similar to the
226 * way they appear in web browsers, with colored, underlined text. The title
227 * attribute is displayed as a tooltip on the link. An example looks like this:
229 * <informalexample><programlisting>
230 * gtk_label_set_markup (label, "Go to the <a href="http://www.gtk.org" title="<i>Our</i> website">GTK+ website</a> for more...");
231 * </programlisting></informalexample>
233 * It is possible to implement custom handling for links and their tooltips with
234 * the #GtkLabel::activate-link signal and the gtk_label_get_current_uri() function.
239 struct _GtkLabelPrivate
241 GtkLabelSelectionInfo *select_info;
242 GtkWidget *mnemonic_widget;
243 GtkWindow *mnemonic_window;
245 PangoAttrList *attrs;
246 PangoAttrList *effective_attrs;
254 guint mnemonics_visible : 1;
257 guint use_underline : 1;
258 guint use_markup : 1;
260 guint single_line_mode : 1;
261 guint have_transform : 1;
264 guint pattern_set : 1;
265 guint track_links : 1;
267 guint mnemonic_keyval;
270 gint max_width_chars;
273 /* Notes about the handling of links:
275 * Links share the GtkLabelSelectionInfo struct with selectable labels.
276 * There are some new fields for links. The links field contains the list
277 * of GtkLabelLink structs that describe the links which are embedded in
278 * the label. The active_link field points to the link under the mouse
279 * pointer. For keyboard navigation, the 'focus' link is determined by
280 * finding the link which contains the selection_anchor position.
281 * The link_clicked field is used with button press and release events
282 * to ensure that pressing inside a link and releasing outside of it
283 * does not activate the link.
285 * Links are rendered with the link-color/visited-link-color colors
286 * that are determined by the style and with an underline. When the mouse
287 * pointer is over a link, the pointer is changed to indicate the link,
288 * and the background behind the link is rendered with the base[PRELIGHT]
289 * color. While a button is pressed over a link, the background is rendered
290 * with the base[ACTIVE] color.
292 * Labels with links accept keyboard focus, and it is possible to move
293 * the focus between the embedded links using Tab/Shift-Tab. The focus
294 * is indicated by a focus rectangle that is drawn around the link text.
295 * Pressing Enter activates the focussed link, and there is a suitable
296 * context menu for links that can be opened with the Menu key. Pressing
297 * Control-C copies the link URI to the clipboard.
299 * In selectable labels with links, link functionality is only available
300 * when the selection is empty.
305 gchar *title; /* the title attribute, used as tooltip */
306 gboolean visited; /* get set when the link is activated; this flag
307 * gets preserved over later set_markup() calls
309 gint start; /* position of the link in the PangoLayout */
313 struct _GtkLabelSelectionInfo
316 gint selection_anchor;
318 GtkWidget *popup_menu;
321 GtkLabelLink *active_link;
327 guint select_words : 1;
328 guint selectable : 1;
329 guint link_clicked : 1;
337 ACTIVATE_CURRENT_LINK,
352 PROP_MNEMONIC_KEYVAL,
353 PROP_MNEMONIC_WIDGET,
354 PROP_CURSOR_POSITION,
355 PROP_SELECTION_BOUND,
358 PROP_SINGLE_LINE_MODE,
360 PROP_MAX_WIDTH_CHARS,
361 PROP_TRACK_VISITED_LINKS
364 /* When rotating ellipsizable text we want the natural size to request
365 * more to ensure the label wont ever ellipsize in an allocation of full natural size.
367 #define ROTATION_ELLIPSIZE_PADDING 2
369 static guint signals[LAST_SIGNAL] = { 0 };
371 static const GdkColor default_link_color = { 0, 0, 0, 0xeeee };
372 static const GdkColor default_visited_link_color = { 0, 0x5555, 0x1a1a, 0x8b8b };
374 static void gtk_label_set_property (GObject *object,
378 static void gtk_label_get_property (GObject *object,
382 static void gtk_label_finalize (GObject *object);
383 static void gtk_label_destroy (GtkWidget *widget);
384 static void gtk_label_size_allocate (GtkWidget *widget,
385 GtkAllocation *allocation);
386 static void gtk_label_state_flags_changed (GtkWidget *widget,
387 GtkStateFlags prev_state);
388 static void gtk_label_style_updated (GtkWidget *widget);
389 static void gtk_label_direction_changed (GtkWidget *widget,
390 GtkTextDirection previous_dir);
391 static gint gtk_label_draw (GtkWidget *widget,
393 static gboolean gtk_label_focus (GtkWidget *widget,
394 GtkDirectionType direction);
396 static void gtk_label_realize (GtkWidget *widget);
397 static void gtk_label_unrealize (GtkWidget *widget);
398 static void gtk_label_map (GtkWidget *widget);
399 static void gtk_label_unmap (GtkWidget *widget);
401 static gboolean gtk_label_button_press (GtkWidget *widget,
402 GdkEventButton *event);
403 static gboolean gtk_label_button_release (GtkWidget *widget,
404 GdkEventButton *event);
405 static gboolean gtk_label_motion (GtkWidget *widget,
406 GdkEventMotion *event);
407 static gboolean gtk_label_leave_notify (GtkWidget *widget,
408 GdkEventCrossing *event);
410 static void gtk_label_grab_focus (GtkWidget *widget);
412 static gboolean gtk_label_query_tooltip (GtkWidget *widget,
415 gboolean keyboard_tip,
416 GtkTooltip *tooltip);
418 static void gtk_label_set_text_internal (GtkLabel *label,
420 static void gtk_label_set_label_internal (GtkLabel *label,
422 static void gtk_label_set_use_markup_internal (GtkLabel *label,
424 static void gtk_label_set_use_underline_internal (GtkLabel *label,
426 static void gtk_label_set_attributes_internal (GtkLabel *label,
427 PangoAttrList *attrs);
428 static void gtk_label_set_uline_text_internal (GtkLabel *label,
430 static void gtk_label_set_pattern_internal (GtkLabel *label,
431 const gchar *pattern,
432 gboolean is_mnemonic);
433 static void gtk_label_set_markup_internal (GtkLabel *label,
435 gboolean with_uline);
436 static void gtk_label_recalculate (GtkLabel *label);
437 static void gtk_label_hierarchy_changed (GtkWidget *widget,
438 GtkWidget *old_toplevel);
439 static void gtk_label_screen_changed (GtkWidget *widget,
440 GdkScreen *old_screen);
441 static gboolean gtk_label_popup_menu (GtkWidget *widget);
443 static void gtk_label_create_window (GtkLabel *label);
444 static void gtk_label_destroy_window (GtkLabel *label);
445 static void gtk_label_ensure_select_info (GtkLabel *label);
446 static void gtk_label_clear_select_info (GtkLabel *label);
447 static void gtk_label_update_cursor (GtkLabel *label);
448 static void gtk_label_clear_layout (GtkLabel *label);
449 static void gtk_label_ensure_layout (GtkLabel *label);
450 static void gtk_label_select_region_index (GtkLabel *label,
455 static gboolean gtk_label_mnemonic_activate (GtkWidget *widget,
456 gboolean group_cycling);
457 static void gtk_label_setup_mnemonic (GtkLabel *label,
459 static void gtk_label_drag_data_get (GtkWidget *widget,
460 GdkDragContext *context,
461 GtkSelectionData *selection_data,
465 static void gtk_label_buildable_interface_init (GtkBuildableIface *iface);
466 static gboolean gtk_label_buildable_custom_tag_start (GtkBuildable *buildable,
469 const gchar *tagname,
470 GMarkupParser *parser,
473 static void gtk_label_buildable_custom_finished (GtkBuildable *buildable,
476 const gchar *tagname,
480 static void connect_mnemonics_visible_notify (GtkLabel *label);
481 static gboolean separate_uline_pattern (const gchar *str,
487 /* For selectable labels: */
488 static void gtk_label_move_cursor (GtkLabel *label,
489 GtkMovementStep step,
491 gboolean extend_selection);
492 static void gtk_label_copy_clipboard (GtkLabel *label);
493 static void gtk_label_select_all (GtkLabel *label);
494 static void gtk_label_do_popup (GtkLabel *label,
495 GdkEventButton *event);
496 static gint gtk_label_move_forward_word (GtkLabel *label,
498 static gint gtk_label_move_backward_word (GtkLabel *label,
502 static void gtk_label_rescan_links (GtkLabel *label);
503 static void gtk_label_clear_links (GtkLabel *label);
504 static gboolean gtk_label_activate_link (GtkLabel *label,
506 static void gtk_label_activate_current_link (GtkLabel *label);
507 static GtkLabelLink *gtk_label_get_current_link (GtkLabel *label);
508 static void gtk_label_get_link_colors (GtkWidget *widget,
509 GdkColor **link_color,
510 GdkColor **visited_link_color);
511 static void emit_activate_link (GtkLabel *label,
514 static GtkSizeRequestMode gtk_label_get_request_mode (GtkWidget *widget);
515 static void gtk_label_get_preferred_width (GtkWidget *widget,
518 static void gtk_label_get_preferred_height (GtkWidget *widget,
521 static void gtk_label_get_preferred_width_for_height (GtkWidget *widget,
524 gint *natural_width);
525 static void gtk_label_get_preferred_height_for_width (GtkWidget *widget,
527 gint *minimum_height,
528 gint *natural_height);
530 static GtkBuildableIface *buildable_parent_iface = NULL;
532 G_DEFINE_TYPE_WITH_CODE (GtkLabel, gtk_label, GTK_TYPE_MISC,
533 G_IMPLEMENT_INTERFACE (GTK_TYPE_BUILDABLE,
534 gtk_label_buildable_interface_init))
537 add_move_binding (GtkBindingSet *binding_set,
540 GtkMovementStep step,
543 g_return_if_fail ((modmask & GDK_SHIFT_MASK) == 0);
545 gtk_binding_entry_add_signal (binding_set, keyval, modmask,
549 G_TYPE_BOOLEAN, FALSE);
551 /* Selection-extending version */
552 gtk_binding_entry_add_signal (binding_set, keyval, modmask | GDK_SHIFT_MASK,
556 G_TYPE_BOOLEAN, TRUE);
560 gtk_label_class_init (GtkLabelClass *class)
562 GObjectClass *gobject_class = G_OBJECT_CLASS (class);
563 GtkWidgetClass *widget_class = GTK_WIDGET_CLASS (class);
564 GtkBindingSet *binding_set;
566 gobject_class->set_property = gtk_label_set_property;
567 gobject_class->get_property = gtk_label_get_property;
568 gobject_class->finalize = gtk_label_finalize;
570 widget_class->destroy = gtk_label_destroy;
571 widget_class->size_allocate = gtk_label_size_allocate;
572 widget_class->state_flags_changed = gtk_label_state_flags_changed;
573 widget_class->style_updated = gtk_label_style_updated;
574 widget_class->query_tooltip = gtk_label_query_tooltip;
575 widget_class->direction_changed = gtk_label_direction_changed;
576 widget_class->draw = gtk_label_draw;
577 widget_class->realize = gtk_label_realize;
578 widget_class->unrealize = gtk_label_unrealize;
579 widget_class->map = gtk_label_map;
580 widget_class->unmap = gtk_label_unmap;
581 widget_class->button_press_event = gtk_label_button_press;
582 widget_class->button_release_event = gtk_label_button_release;
583 widget_class->motion_notify_event = gtk_label_motion;
584 widget_class->leave_notify_event = gtk_label_leave_notify;
585 widget_class->hierarchy_changed = gtk_label_hierarchy_changed;
586 widget_class->screen_changed = gtk_label_screen_changed;
587 widget_class->mnemonic_activate = gtk_label_mnemonic_activate;
588 widget_class->drag_data_get = gtk_label_drag_data_get;
589 widget_class->grab_focus = gtk_label_grab_focus;
590 widget_class->popup_menu = gtk_label_popup_menu;
591 widget_class->focus = gtk_label_focus;
592 widget_class->get_request_mode = gtk_label_get_request_mode;
593 widget_class->get_preferred_width = gtk_label_get_preferred_width;
594 widget_class->get_preferred_height = gtk_label_get_preferred_height;
595 widget_class->get_preferred_width_for_height = gtk_label_get_preferred_width_for_height;
596 widget_class->get_preferred_height_for_width = gtk_label_get_preferred_height_for_width;
598 class->move_cursor = gtk_label_move_cursor;
599 class->copy_clipboard = gtk_label_copy_clipboard;
600 class->activate_link = gtk_label_activate_link;
603 * GtkLabel::move-cursor:
604 * @entry: the object which received the signal
605 * @step: the granularity of the move, as a #GtkMovementStep
606 * @count: the number of @step units to move
607 * @extend_selection: %TRUE if the move should extend the selection
609 * The ::move-cursor signal is a
610 * <link linkend="keybinding-signals">keybinding signal</link>
611 * which gets emitted when the user initiates a cursor movement.
612 * If the cursor is not visible in @entry, this signal causes
613 * the viewport to be moved instead.
615 * Applications should not connect to it, but may emit it with
616 * g_signal_emit_by_name() if they need to control the cursor
619 * The default bindings for this signal come in two variants,
620 * the variant with the Shift modifier extends the selection,
621 * the variant without the Shift modifer does not.
622 * There are too many key combinations to list them all here.
624 * <listitem>Arrow keys move by individual characters/lines</listitem>
625 * <listitem>Ctrl-arrow key combinations move by words/paragraphs</listitem>
626 * <listitem>Home/End keys move to the ends of the buffer</listitem>
629 signals[MOVE_CURSOR] =
630 g_signal_new (I_("move-cursor"),
631 G_OBJECT_CLASS_TYPE (gobject_class),
632 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
633 G_STRUCT_OFFSET (GtkLabelClass, move_cursor),
635 _gtk_marshal_VOID__ENUM_INT_BOOLEAN,
637 GTK_TYPE_MOVEMENT_STEP,
642 * GtkLabel::copy-clipboard:
643 * @label: the object which received the signal
645 * The ::copy-clipboard signal is a
646 * <link linkend="keybinding-signals">keybinding signal</link>
647 * which gets emitted to copy the selection to the clipboard.
649 * The default binding for this signal is Ctrl-c.
651 signals[COPY_CLIPBOARD] =
652 g_signal_new (I_("copy-clipboard"),
653 G_OBJECT_CLASS_TYPE (gobject_class),
654 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
655 G_STRUCT_OFFSET (GtkLabelClass, copy_clipboard),
657 _gtk_marshal_VOID__VOID,
661 * GtkLabel::populate-popup:
662 * @label: The label on which the signal is emitted
663 * @menu: the menu that is being populated
665 * The ::populate-popup signal gets emitted before showing the
666 * context menu of the label. Note that only selectable labels
667 * have context menus.
669 * If you need to add items to the context menu, connect
670 * to this signal and append your menuitems to the @menu.
672 signals[POPULATE_POPUP] =
673 g_signal_new (I_("populate-popup"),
674 G_OBJECT_CLASS_TYPE (gobject_class),
676 G_STRUCT_OFFSET (GtkLabelClass, populate_popup),
678 _gtk_marshal_VOID__OBJECT,
683 * GtkLabel::activate-current-link:
684 * @label: The label on which the signal was emitted
686 * A <link linkend="keybinding-signals">keybinding signal</link>
687 * which gets emitted when the user activates a link in the label.
689 * Applications may also emit the signal with g_signal_emit_by_name()
690 * if they need to control activation of URIs programmatically.
692 * The default bindings for this signal are all forms of the Enter key.
696 signals[ACTIVATE_CURRENT_LINK] =
697 g_signal_new_class_handler ("activate-current-link",
698 G_TYPE_FROM_CLASS (gobject_class),
699 G_SIGNAL_RUN_LAST | G_SIGNAL_ACTION,
700 G_CALLBACK (gtk_label_activate_current_link),
702 _gtk_marshal_VOID__VOID,
706 * GtkLabel::activate-link:
707 * @label: The label on which the signal was emitted
708 * @uri: the URI that is activated
710 * The signal which gets emitted to activate a URI.
711 * Applications may connect to it to override the default behaviour,
712 * which is to call gtk_show_uri().
714 * Returns: %TRUE if the link has been activated
718 signals[ACTIVATE_LINK] =
719 g_signal_new ("activate-link",
720 G_TYPE_FROM_CLASS (gobject_class),
722 G_STRUCT_OFFSET (GtkLabelClass, activate_link),
723 _gtk_boolean_handled_accumulator, NULL,
724 _gtk_marshal_BOOLEAN__STRING,
725 G_TYPE_BOOLEAN, 1, G_TYPE_STRING);
727 g_object_class_install_property (gobject_class,
729 g_param_spec_string ("label",
731 P_("The text of the label"),
733 GTK_PARAM_READWRITE));
734 g_object_class_install_property (gobject_class,
736 g_param_spec_boxed ("attributes",
738 P_("A list of style attributes to apply to the text of the label"),
739 PANGO_TYPE_ATTR_LIST,
740 GTK_PARAM_READWRITE));
741 g_object_class_install_property (gobject_class,
743 g_param_spec_boolean ("use-markup",
745 P_("The text of the label includes XML markup. See pango_parse_markup()"),
747 GTK_PARAM_READWRITE));
748 g_object_class_install_property (gobject_class,
750 g_param_spec_boolean ("use-underline",
752 P_("If set, an underline in the text indicates the next character should be used for the mnemonic accelerator key"),
754 GTK_PARAM_READWRITE));
756 g_object_class_install_property (gobject_class,
758 g_param_spec_enum ("justify",
760 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"),
761 GTK_TYPE_JUSTIFICATION,
763 GTK_PARAM_READWRITE));
765 g_object_class_install_property (gobject_class,
767 g_param_spec_string ("pattern",
769 P_("A string with _ characters in positions correspond to characters in the text to underline"),
771 GTK_PARAM_WRITABLE));
773 g_object_class_install_property (gobject_class,
775 g_param_spec_boolean ("wrap",
777 P_("If set, wrap lines if the text becomes too wide"),
779 GTK_PARAM_READWRITE));
781 * GtkLabel:wrap-mode:
783 * If line wrapping is on (see the #GtkLabel:wrap property) this controls
784 * how the line wrapping is done. The default is %PANGO_WRAP_WORD, which
785 * means wrap on word boundaries.
789 g_object_class_install_property (gobject_class,
791 g_param_spec_enum ("wrap-mode",
792 P_("Line wrap mode"),
793 P_("If wrap is set, controls how linewrapping is done"),
794 PANGO_TYPE_WRAP_MODE,
796 GTK_PARAM_READWRITE));
797 g_object_class_install_property (gobject_class,
799 g_param_spec_boolean ("selectable",
801 P_("Whether the label text can be selected with the mouse"),
803 GTK_PARAM_READWRITE));
804 g_object_class_install_property (gobject_class,
805 PROP_MNEMONIC_KEYVAL,
806 g_param_spec_uint ("mnemonic-keyval",
808 P_("The mnemonic accelerator key for this label"),
812 GTK_PARAM_READABLE));
813 g_object_class_install_property (gobject_class,
814 PROP_MNEMONIC_WIDGET,
815 g_param_spec_object ("mnemonic-widget",
816 P_("Mnemonic widget"),
817 P_("The widget to be activated when the label's mnemonic "
820 GTK_PARAM_READWRITE));
822 g_object_class_install_property (gobject_class,
823 PROP_CURSOR_POSITION,
824 g_param_spec_int ("cursor-position",
825 P_("Cursor Position"),
826 P_("The current position of the insertion cursor in chars"),
830 GTK_PARAM_READABLE));
832 g_object_class_install_property (gobject_class,
833 PROP_SELECTION_BOUND,
834 g_param_spec_int ("selection-bound",
835 P_("Selection Bound"),
836 P_("The position of the opposite end of the selection from the cursor in chars"),
840 GTK_PARAM_READABLE));
843 * GtkLabel:ellipsize:
845 * The preferred place to ellipsize the string, if the label does
846 * not have enough room to display the entire string, specified as a
847 * #PangoEllisizeMode.
849 * Note that setting this property to a value other than
850 * %PANGO_ELLIPSIZE_NONE has the side-effect that the label requests
851 * only enough space to display the ellipsis "...". In particular, this
852 * means that ellipsizing labels do not work well in notebook tabs, unless
853 * the tab's #GtkNotebook:tab-expand property is set to %TRUE. Other ways
854 * to set a label's width are gtk_widget_set_size_request() and
855 * gtk_label_set_width_chars().
859 g_object_class_install_property (gobject_class,
861 g_param_spec_enum ("ellipsize",
863 P_("The preferred place to ellipsize the string, if the label does not have enough room to display the entire string"),
864 PANGO_TYPE_ELLIPSIZE_MODE,
865 PANGO_ELLIPSIZE_NONE,
866 GTK_PARAM_READWRITE));
869 * GtkLabel:width-chars:
871 * The desired width of the label, in characters. If this property is set to
872 * -1, the width will be calculated automatically.
874 * See the section on <link linkend="label-text-layout">text layout</link>
875 * for details of how #GtkLabel:width-chars and #GtkLabel:max-width-chars
876 * determine the width of ellipsized and wrapped labels.
880 g_object_class_install_property (gobject_class,
882 g_param_spec_int ("width-chars",
883 P_("Width In Characters"),
884 P_("The desired width of the label, in characters"),
888 GTK_PARAM_READWRITE));
891 * GtkLabel:single-line-mode:
893 * Whether the label is in single line mode. In single line mode,
894 * the height of the label does not depend on the actual text, it
895 * is always set to ascent + descent of the font. This can be an
896 * advantage in situations where resizing the label because of text
897 * changes would be distracting, e.g. in a statusbar.
901 g_object_class_install_property (gobject_class,
902 PROP_SINGLE_LINE_MODE,
903 g_param_spec_boolean ("single-line-mode",
904 P_("Single Line Mode"),
905 P_("Whether the label is in single line mode"),
907 GTK_PARAM_READWRITE));
912 * The angle that the baseline of the label makes with the horizontal,
913 * in degrees, measured counterclockwise. An angle of 90 reads from
914 * from bottom to top, an angle of 270, from top to bottom. Ignored
915 * if the label is selectable, wrapped, or ellipsized.
919 g_object_class_install_property (gobject_class,
921 g_param_spec_double ("angle",
923 P_("Angle at which the label is rotated"),
927 GTK_PARAM_READWRITE));
930 * GtkLabel:max-width-chars:
932 * The desired maximum width of the label, in characters. If this property
933 * is set to -1, the width will be calculated automatically.
935 * See the section on <link linkend="label-text-layout">text layout</link>
936 * for details of how #GtkLabel:width-chars and #GtkLabel:max-width-chars
937 * determine the width of ellipsized and wrapped labels.
941 g_object_class_install_property (gobject_class,
942 PROP_MAX_WIDTH_CHARS,
943 g_param_spec_int ("max-width-chars",
944 P_("Maximum Width In Characters"),
945 P_("The desired maximum width of the label, in characters"),
949 GTK_PARAM_READWRITE));
952 * GtkLabel:track-visited-links:
954 * Set this property to %TRUE to make the label track which links
955 * have been clicked. It will then apply the ::visited-link-color
956 * color, instead of ::link-color.
960 g_object_class_install_property (gobject_class,
961 PROP_TRACK_VISITED_LINKS,
962 g_param_spec_boolean ("track-visited-links",
963 P_("Track visited links"),
964 P_("Whether visited links should be tracked"),
966 GTK_PARAM_READWRITE));
971 binding_set = gtk_binding_set_by_class (class);
973 /* Moving the insertion point */
974 add_move_binding (binding_set, GDK_KEY_Right, 0,
975 GTK_MOVEMENT_VISUAL_POSITIONS, 1);
977 add_move_binding (binding_set, GDK_KEY_Left, 0,
978 GTK_MOVEMENT_VISUAL_POSITIONS, -1);
980 add_move_binding (binding_set, GDK_KEY_KP_Right, 0,
981 GTK_MOVEMENT_VISUAL_POSITIONS, 1);
983 add_move_binding (binding_set, GDK_KEY_KP_Left, 0,
984 GTK_MOVEMENT_VISUAL_POSITIONS, -1);
986 add_move_binding (binding_set, GDK_KEY_f, GDK_CONTROL_MASK,
987 GTK_MOVEMENT_LOGICAL_POSITIONS, 1);
989 add_move_binding (binding_set, GDK_KEY_b, GDK_CONTROL_MASK,
990 GTK_MOVEMENT_LOGICAL_POSITIONS, -1);
992 add_move_binding (binding_set, GDK_KEY_Right, GDK_CONTROL_MASK,
993 GTK_MOVEMENT_WORDS, 1);
995 add_move_binding (binding_set, GDK_KEY_Left, GDK_CONTROL_MASK,
996 GTK_MOVEMENT_WORDS, -1);
998 add_move_binding (binding_set, GDK_KEY_KP_Right, GDK_CONTROL_MASK,
999 GTK_MOVEMENT_WORDS, 1);
1001 add_move_binding (binding_set, GDK_KEY_KP_Left, GDK_CONTROL_MASK,
1002 GTK_MOVEMENT_WORDS, -1);
1005 gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
1007 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1009 G_TYPE_BOOLEAN, FALSE);
1011 gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_CONTROL_MASK,
1013 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1015 G_TYPE_BOOLEAN, TRUE);
1017 gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK,
1019 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1021 G_TYPE_BOOLEAN, FALSE);
1023 gtk_binding_entry_add_signal (binding_set, GDK_KEY_slash, GDK_CONTROL_MASK,
1025 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1027 G_TYPE_BOOLEAN, TRUE);
1030 gtk_binding_entry_add_signal (binding_set, GDK_KEY_a, GDK_SHIFT_MASK | GDK_CONTROL_MASK,
1032 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1034 G_TYPE_BOOLEAN, FALSE);
1036 gtk_binding_entry_add_signal (binding_set, GDK_KEY_backslash, GDK_CONTROL_MASK,
1038 G_TYPE_ENUM, GTK_MOVEMENT_PARAGRAPH_ENDS,
1040 G_TYPE_BOOLEAN, FALSE);
1042 add_move_binding (binding_set, GDK_KEY_f, GDK_MOD1_MASK,
1043 GTK_MOVEMENT_WORDS, 1);
1045 add_move_binding (binding_set, GDK_KEY_b, GDK_MOD1_MASK,
1046 GTK_MOVEMENT_WORDS, -1);
1048 add_move_binding (binding_set, GDK_KEY_Home, 0,
1049 GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
1051 add_move_binding (binding_set, GDK_KEY_End, 0,
1052 GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
1054 add_move_binding (binding_set, GDK_KEY_KP_Home, 0,
1055 GTK_MOVEMENT_DISPLAY_LINE_ENDS, -1);
1057 add_move_binding (binding_set, GDK_KEY_KP_End, 0,
1058 GTK_MOVEMENT_DISPLAY_LINE_ENDS, 1);
1060 add_move_binding (binding_set, GDK_KEY_Home, GDK_CONTROL_MASK,
1061 GTK_MOVEMENT_BUFFER_ENDS, -1);
1063 add_move_binding (binding_set, GDK_KEY_End, GDK_CONTROL_MASK,
1064 GTK_MOVEMENT_BUFFER_ENDS, 1);
1066 add_move_binding (binding_set, GDK_KEY_KP_Home, GDK_CONTROL_MASK,
1067 GTK_MOVEMENT_BUFFER_ENDS, -1);
1069 add_move_binding (binding_set, GDK_KEY_KP_End, GDK_CONTROL_MASK,
1070 GTK_MOVEMENT_BUFFER_ENDS, 1);
1073 gtk_binding_entry_add_signal (binding_set, GDK_KEY_c, GDK_CONTROL_MASK,
1074 "copy-clipboard", 0);
1076 gtk_binding_entry_add_signal (binding_set, GDK_KEY_Return, 0,
1077 "activate-current-link", 0);
1078 gtk_binding_entry_add_signal (binding_set, GDK_KEY_ISO_Enter, 0,
1079 "activate-current-link", 0);
1080 gtk_binding_entry_add_signal (binding_set, GDK_KEY_KP_Enter, 0,
1081 "activate-current-link", 0);
1083 g_type_class_add_private (class, sizeof (GtkLabelPrivate));
1085 gtk_widget_class_set_accessible_type (widget_class, GTK_TYPE_LABEL_ACCESSIBLE);
1089 gtk_label_set_property (GObject *object,
1091 const GValue *value,
1094 GtkLabel *label = GTK_LABEL (object);
1099 gtk_label_set_label (label, g_value_get_string (value));
1101 case PROP_ATTRIBUTES:
1102 gtk_label_set_attributes (label, g_value_get_boxed (value));
1104 case PROP_USE_MARKUP:
1105 gtk_label_set_use_markup (label, g_value_get_boolean (value));
1107 case PROP_USE_UNDERLINE:
1108 gtk_label_set_use_underline (label, g_value_get_boolean (value));
1111 gtk_label_set_justify (label, g_value_get_enum (value));
1114 gtk_label_set_pattern (label, g_value_get_string (value));
1117 gtk_label_set_line_wrap (label, g_value_get_boolean (value));
1119 case PROP_WRAP_MODE:
1120 gtk_label_set_line_wrap_mode (label, g_value_get_enum (value));
1122 case PROP_SELECTABLE:
1123 gtk_label_set_selectable (label, g_value_get_boolean (value));
1125 case PROP_MNEMONIC_WIDGET:
1126 gtk_label_set_mnemonic_widget (label, (GtkWidget*) g_value_get_object (value));
1128 case PROP_ELLIPSIZE:
1129 gtk_label_set_ellipsize (label, g_value_get_enum (value));
1131 case PROP_WIDTH_CHARS:
1132 gtk_label_set_width_chars (label, g_value_get_int (value));
1134 case PROP_SINGLE_LINE_MODE:
1135 gtk_label_set_single_line_mode (label, g_value_get_boolean (value));
1138 gtk_label_set_angle (label, g_value_get_double (value));
1140 case PROP_MAX_WIDTH_CHARS:
1141 gtk_label_set_max_width_chars (label, g_value_get_int (value));
1143 case PROP_TRACK_VISITED_LINKS:
1144 gtk_label_set_track_visited_links (label, g_value_get_boolean (value));
1147 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1153 gtk_label_get_property (GObject *object,
1158 GtkLabel *label = GTK_LABEL (object);
1159 GtkLabelPrivate *priv = label->priv;
1164 g_value_set_string (value, priv->label);
1166 case PROP_ATTRIBUTES:
1167 g_value_set_boxed (value, priv->attrs);
1169 case PROP_USE_MARKUP:
1170 g_value_set_boolean (value, priv->use_markup);
1172 case PROP_USE_UNDERLINE:
1173 g_value_set_boolean (value, priv->use_underline);
1176 g_value_set_enum (value, priv->jtype);
1179 g_value_set_boolean (value, priv->wrap);
1181 case PROP_WRAP_MODE:
1182 g_value_set_enum (value, priv->wrap_mode);
1184 case PROP_SELECTABLE:
1185 g_value_set_boolean (value, gtk_label_get_selectable (label));
1187 case PROP_MNEMONIC_KEYVAL:
1188 g_value_set_uint (value, priv->mnemonic_keyval);
1190 case PROP_MNEMONIC_WIDGET:
1191 g_value_set_object (value, (GObject*) priv->mnemonic_widget);
1193 case PROP_CURSOR_POSITION:
1194 g_value_set_int (value, _gtk_label_get_cursor_position (label));
1196 case PROP_SELECTION_BOUND:
1197 g_value_set_int (value, _gtk_label_get_selection_bound (label));
1199 case PROP_ELLIPSIZE:
1200 g_value_set_enum (value, priv->ellipsize);
1202 case PROP_WIDTH_CHARS:
1203 g_value_set_int (value, gtk_label_get_width_chars (label));
1205 case PROP_SINGLE_LINE_MODE:
1206 g_value_set_boolean (value, gtk_label_get_single_line_mode (label));
1209 g_value_set_double (value, gtk_label_get_angle (label));
1211 case PROP_MAX_WIDTH_CHARS:
1212 g_value_set_int (value, gtk_label_get_max_width_chars (label));
1214 case PROP_TRACK_VISITED_LINKS:
1215 g_value_set_boolean (value, gtk_label_get_track_visited_links (label));
1218 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
1224 gtk_label_init (GtkLabel *label)
1226 GtkLabelPrivate *priv;
1228 label->priv = G_TYPE_INSTANCE_GET_PRIVATE (label,
1233 gtk_widget_set_has_window (GTK_WIDGET (label), FALSE);
1235 priv->width_chars = -1;
1236 priv->max_width_chars = -1;
1239 priv->jtype = GTK_JUSTIFY_LEFT;
1241 priv->wrap_mode = PANGO_WRAP_WORD;
1242 priv->ellipsize = PANGO_ELLIPSIZE_NONE;
1244 priv->use_underline = FALSE;
1245 priv->use_markup = FALSE;
1246 priv->pattern_set = FALSE;
1247 priv->track_links = TRUE;
1249 priv->mnemonic_keyval = GDK_KEY_VoidSymbol;
1250 priv->layout = NULL;
1254 priv->mnemonic_widget = NULL;
1255 priv->mnemonic_window = NULL;
1257 priv->mnemonics_visible = TRUE;
1259 gtk_label_set_text (label, "");
1264 gtk_label_buildable_interface_init (GtkBuildableIface *iface)
1266 buildable_parent_iface = g_type_interface_peek_parent (iface);
1268 iface->custom_tag_start = gtk_label_buildable_custom_tag_start;
1269 iface->custom_finished = gtk_label_buildable_custom_finished;
1273 GtkBuilder *builder;
1275 PangoAttrList *attrs;
1278 static PangoAttribute *
1279 attribute_from_text (GtkBuilder *builder,
1284 PangoAttribute *attribute = NULL;
1286 PangoLanguage *language;
1287 PangoFontDescription *font_desc;
1289 GValue val = G_VALUE_INIT;
1291 if (!gtk_builder_value_from_string_type (builder, PANGO_TYPE_ATTR_TYPE, name, &val, error))
1294 type = g_value_get_enum (&val);
1295 g_value_unset (&val);
1299 /* PangoAttrLanguage */
1300 case PANGO_ATTR_LANGUAGE:
1301 if ((language = pango_language_from_string (value)))
1303 attribute = pango_attr_language_new (language);
1304 g_value_init (&val, G_TYPE_INT);
1308 case PANGO_ATTR_STYLE:
1309 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_STYLE, value, &val, error))
1310 attribute = pango_attr_style_new (g_value_get_enum (&val));
1312 case PANGO_ATTR_WEIGHT:
1313 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_WEIGHT, value, &val, error))
1314 attribute = pango_attr_weight_new (g_value_get_enum (&val));
1316 case PANGO_ATTR_VARIANT:
1317 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_VARIANT, value, &val, error))
1318 attribute = pango_attr_variant_new (g_value_get_enum (&val));
1320 case PANGO_ATTR_STRETCH:
1321 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_STRETCH, value, &val, error))
1322 attribute = pango_attr_stretch_new (g_value_get_enum (&val));
1324 case PANGO_ATTR_UNDERLINE:
1325 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_UNDERLINE, value, &val, NULL))
1326 attribute = pango_attr_underline_new (g_value_get_enum (&val));
1329 /* XXX: allow boolean for backwards compat, so ignore error */
1330 /* Deprecate this somehow */
1331 g_value_unset (&val);
1332 if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
1333 attribute = pango_attr_underline_new (g_value_get_boolean (&val));
1336 case PANGO_ATTR_STRIKETHROUGH:
1337 if (gtk_builder_value_from_string_type (builder, G_TYPE_BOOLEAN, value, &val, error))
1338 attribute = pango_attr_strikethrough_new (g_value_get_boolean (&val));
1340 case PANGO_ATTR_GRAVITY:
1341 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_GRAVITY, value, &val, error))
1342 attribute = pango_attr_gravity_new (g_value_get_enum (&val));
1344 case PANGO_ATTR_GRAVITY_HINT:
1345 if (gtk_builder_value_from_string_type (builder, PANGO_TYPE_GRAVITY_HINT,
1346 value, &val, error))
1347 attribute = pango_attr_gravity_hint_new (g_value_get_enum (&val));
1349 /* PangoAttrString */
1350 case PANGO_ATTR_FAMILY:
1351 attribute = pango_attr_family_new (value);
1352 g_value_init (&val, G_TYPE_INT);
1356 case PANGO_ATTR_SIZE:
1357 if (gtk_builder_value_from_string_type (builder, G_TYPE_INT,
1358 value, &val, error))
1359 attribute = pango_attr_size_new (g_value_get_int (&val));
1361 case PANGO_ATTR_ABSOLUTE_SIZE:
1362 if (gtk_builder_value_from_string_type (builder, G_TYPE_INT,
1363 value, &val, error))
1364 attribute = pango_attr_size_new_absolute (g_value_get_int (&val));
1367 /* PangoAttrFontDesc */
1368 case PANGO_ATTR_FONT_DESC:
1369 if ((font_desc = pango_font_description_from_string (value)))
1371 attribute = pango_attr_font_desc_new (font_desc);
1372 pango_font_description_free (font_desc);
1373 g_value_init (&val, G_TYPE_INT);
1377 /* PangoAttrColor */
1378 case PANGO_ATTR_FOREGROUND:
1379 if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
1380 value, &val, error))
1382 color = g_value_get_boxed (&val);
1383 attribute = pango_attr_foreground_new (color->red, color->green, color->blue);
1386 case PANGO_ATTR_BACKGROUND:
1387 if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
1388 value, &val, error))
1390 color = g_value_get_boxed (&val);
1391 attribute = pango_attr_background_new (color->red, color->green, color->blue);
1394 case PANGO_ATTR_UNDERLINE_COLOR:
1395 if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
1396 value, &val, error))
1398 color = g_value_get_boxed (&val);
1399 attribute = pango_attr_underline_color_new (color->red, color->green, color->blue);
1402 case PANGO_ATTR_STRIKETHROUGH_COLOR:
1403 if (gtk_builder_value_from_string_type (builder, GDK_TYPE_COLOR,
1404 value, &val, error))
1406 color = g_value_get_boxed (&val);
1407 attribute = pango_attr_strikethrough_color_new (color->red, color->green, color->blue);
1411 /* PangoAttrShape */
1412 case PANGO_ATTR_SHAPE:
1413 /* Unsupported for now */
1415 /* PangoAttrFloat */
1416 case PANGO_ATTR_SCALE:
1417 if (gtk_builder_value_from_string_type (builder, G_TYPE_DOUBLE,
1418 value, &val, error))
1419 attribute = pango_attr_scale_new (g_value_get_double (&val));
1422 case PANGO_ATTR_INVALID:
1423 case PANGO_ATTR_LETTER_SPACING:
1424 case PANGO_ATTR_RISE:
1425 case PANGO_ATTR_FALLBACK:
1430 g_value_unset (&val);
1437 pango_start_element (GMarkupParseContext *context,
1438 const gchar *element_name,
1439 const gchar **names,
1440 const gchar **values,
1444 PangoParserData *data = (PangoParserData*)user_data;
1445 GValue val = G_VALUE_INIT;
1447 gint line_number, char_number;
1449 if (strcmp (element_name, "attribute") == 0)
1451 PangoAttribute *attr = NULL;
1452 const gchar *name = NULL;
1453 const gchar *value = NULL;
1454 const gchar *start = NULL;
1455 const gchar *end = NULL;
1456 guint start_val = 0;
1457 guint end_val = G_MAXUINT;
1459 for (i = 0; names[i]; i++)
1461 if (strcmp (names[i], "name") == 0)
1463 else if (strcmp (names[i], "value") == 0)
1465 else if (strcmp (names[i], "start") == 0)
1467 else if (strcmp (names[i], "end") == 0)
1471 g_markup_parse_context_get_position (context,
1476 GTK_BUILDER_ERROR_INVALID_ATTRIBUTE,
1477 "%s:%d:%d '%s' is not a valid attribute of <%s>",
1479 line_number, char_number, names[i], "attribute");
1484 if (!name || !value)
1486 g_markup_parse_context_get_position (context,
1491 GTK_BUILDER_ERROR_MISSING_ATTRIBUTE,
1492 "%s:%d:%d <%s> requires attribute \"%s\"",
1494 line_number, char_number, "attribute",
1495 name ? "value" : "name");
1501 if (!gtk_builder_value_from_string_type (data->builder, G_TYPE_UINT,
1502 start, &val, error))
1504 start_val = g_value_get_uint (&val);
1505 g_value_unset (&val);
1510 if (!gtk_builder_value_from_string_type (data->builder, G_TYPE_UINT,
1513 end_val = g_value_get_uint (&val);
1514 g_value_unset (&val);
1517 attr = attribute_from_text (data->builder, name, value, error);
1521 attr->start_index = start_val;
1522 attr->end_index = end_val;
1525 data->attrs = pango_attr_list_new ();
1527 pango_attr_list_insert (data->attrs, attr);
1530 else if (strcmp (element_name, "attributes") == 0)
1533 g_warning ("Unsupported tag for GtkLabel: %s\n", element_name);
1536 static const GMarkupParser pango_parser =
1538 pango_start_element,
1542 gtk_label_buildable_custom_tag_start (GtkBuildable *buildable,
1543 GtkBuilder *builder,
1545 const gchar *tagname,
1546 GMarkupParser *parser,
1549 if (buildable_parent_iface->custom_tag_start (buildable, builder, child,
1550 tagname, parser, data))
1553 if (strcmp (tagname, "attributes") == 0)
1555 PangoParserData *parser_data;
1557 parser_data = g_slice_new0 (PangoParserData);
1558 parser_data->builder = g_object_ref (builder);
1559 parser_data->object = g_object_ref (buildable);
1560 *parser = pango_parser;
1561 *data = parser_data;
1568 gtk_label_buildable_custom_finished (GtkBuildable *buildable,
1569 GtkBuilder *builder,
1571 const gchar *tagname,
1574 PangoParserData *data;
1576 buildable_parent_iface->custom_finished (buildable, builder, child,
1577 tagname, user_data);
1579 if (strcmp (tagname, "attributes") == 0)
1581 data = (PangoParserData*)user_data;
1585 gtk_label_set_attributes (GTK_LABEL (buildable), data->attrs);
1586 pango_attr_list_unref (data->attrs);
1589 g_object_unref (data->object);
1590 g_object_unref (data->builder);
1591 g_slice_free (PangoParserData, data);
1598 * @str: The text of the label
1600 * Creates a new label with the given text inside it. You can
1601 * pass %NULL to get an empty label widget.
1603 * Return value: the new #GtkLabel
1606 gtk_label_new (const gchar *str)
1610 label = g_object_new (GTK_TYPE_LABEL, NULL);
1613 gtk_label_set_text (label, str);
1615 return GTK_WIDGET (label);
1619 * gtk_label_new_with_mnemonic:
1620 * @str: The text of the label, with an underscore in front of the
1621 * mnemonic character
1623 * Creates a new #GtkLabel, containing the text in @str.
1625 * If characters in @str are preceded by an underscore, they are
1626 * underlined. If you need a literal underscore character in a label, use
1627 * '__' (two underscores). The first underlined character represents a
1628 * keyboard accelerator called a mnemonic. The mnemonic key can be used
1629 * to activate another widget, chosen automatically, or explicitly using
1630 * gtk_label_set_mnemonic_widget().
1632 * If gtk_label_set_mnemonic_widget() is not called, then the first
1633 * activatable ancestor of the #GtkLabel will be chosen as the mnemonic
1634 * widget. For instance, if the label is inside a button or menu item,
1635 * the button or menu item will automatically become the mnemonic widget
1636 * and be activated by the mnemonic.
1638 * Return value: the new #GtkLabel
1641 gtk_label_new_with_mnemonic (const gchar *str)
1645 label = g_object_new (GTK_TYPE_LABEL, NULL);
1648 gtk_label_set_text_with_mnemonic (label, str);
1650 return GTK_WIDGET (label);
1654 gtk_label_mnemonic_activate (GtkWidget *widget,
1655 gboolean group_cycling)
1657 GtkLabel *label = GTK_LABEL (widget);
1658 GtkLabelPrivate *priv = label->priv;
1661 if (priv->mnemonic_widget)
1662 return gtk_widget_mnemonic_activate (priv->mnemonic_widget, group_cycling);
1664 /* Try to find the widget to activate by traversing the
1665 * widget's ancestry.
1667 parent = gtk_widget_get_parent (widget);
1669 if (GTK_IS_NOTEBOOK (parent))
1674 if (gtk_widget_get_can_focus (parent) ||
1675 (!group_cycling && GTK_WIDGET_GET_CLASS (parent)->activate_signal) ||
1676 GTK_IS_NOTEBOOK (gtk_widget_get_parent (parent)) ||
1677 GTK_IS_MENU_ITEM (parent))
1678 return gtk_widget_mnemonic_activate (parent, group_cycling);
1679 parent = gtk_widget_get_parent (parent);
1682 /* barf if there was nothing to activate */
1683 g_warning ("Couldn't find a target for a mnemonic activation.");
1684 gtk_widget_error_bell (widget);
1690 gtk_label_setup_mnemonic (GtkLabel *label,
1693 GtkLabelPrivate *priv = label->priv;
1694 GtkWidget *widget = GTK_WIDGET (label);
1695 GtkWidget *toplevel;
1696 GtkWidget *mnemonic_menu;
1698 mnemonic_menu = g_object_get_data (G_OBJECT (label), "gtk-mnemonic-menu");
1700 if (last_key != GDK_KEY_VoidSymbol)
1702 if (priv->mnemonic_window)
1704 gtk_window_remove_mnemonic (priv->mnemonic_window,
1707 priv->mnemonic_window = NULL;
1711 _gtk_menu_shell_remove_mnemonic (GTK_MENU_SHELL (mnemonic_menu),
1714 mnemonic_menu = NULL;
1718 if (priv->mnemonic_keyval == GDK_KEY_VoidSymbol)
1721 connect_mnemonics_visible_notify (GTK_LABEL (widget));
1723 toplevel = gtk_widget_get_toplevel (widget);
1724 if (gtk_widget_is_toplevel (toplevel))
1726 GtkWidget *menu_shell;
1728 menu_shell = gtk_widget_get_ancestor (widget,
1729 GTK_TYPE_MENU_SHELL);
1733 _gtk_menu_shell_add_mnemonic (GTK_MENU_SHELL (menu_shell),
1734 priv->mnemonic_keyval,
1736 mnemonic_menu = menu_shell;
1739 if (!GTK_IS_MENU (menu_shell))
1741 gtk_window_add_mnemonic (GTK_WINDOW (toplevel),
1742 priv->mnemonic_keyval,
1744 priv->mnemonic_window = GTK_WINDOW (toplevel);
1749 g_object_set_data (G_OBJECT (label), I_("gtk-mnemonic-menu"), mnemonic_menu);
1753 gtk_label_hierarchy_changed (GtkWidget *widget,
1754 GtkWidget *old_toplevel)
1756 GtkLabel *label = GTK_LABEL (widget);
1757 GtkLabelPrivate *priv = label->priv;
1759 gtk_label_setup_mnemonic (label, priv->mnemonic_keyval);
1763 label_shortcut_setting_apply (GtkLabel *label)
1765 gtk_label_recalculate (label);
1766 if (GTK_IS_ACCEL_LABEL (label))
1767 gtk_accel_label_refetch (GTK_ACCEL_LABEL (label));
1771 label_shortcut_setting_traverse_container (GtkWidget *widget,
1774 if (GTK_IS_LABEL (widget))
1775 label_shortcut_setting_apply (GTK_LABEL (widget));
1776 else if (GTK_IS_CONTAINER (widget))
1777 gtk_container_forall (GTK_CONTAINER (widget),
1778 label_shortcut_setting_traverse_container, data);
1782 label_shortcut_setting_changed (GtkSettings *settings)
1786 list = gtk_window_list_toplevels ();
1788 for (l = list; l ; l = l->next)
1790 GtkWidget *widget = l->data;
1792 if (gtk_widget_get_settings (widget) == settings)
1793 gtk_container_forall (GTK_CONTAINER (widget),
1794 label_shortcut_setting_traverse_container, NULL);
1801 mnemonics_visible_apply (GtkWidget *widget,
1802 gboolean mnemonics_visible)
1804 GtkLabel *label = GTK_LABEL (widget);
1805 GtkLabelPrivate *priv = label->priv;
1807 mnemonics_visible = mnemonics_visible != FALSE;
1809 if (priv->mnemonics_visible != mnemonics_visible)
1811 priv->mnemonics_visible = mnemonics_visible;
1813 gtk_label_recalculate (label);
1818 label_mnemonics_visible_traverse_container (GtkWidget *widget,
1821 gboolean mnemonics_visible = GPOINTER_TO_INT (data);
1823 _gtk_label_mnemonics_visible_apply_recursively (widget, mnemonics_visible);
1827 _gtk_label_mnemonics_visible_apply_recursively (GtkWidget *widget,
1828 gboolean mnemonics_visible)
1830 if (GTK_IS_LABEL (widget))
1831 mnemonics_visible_apply (widget, mnemonics_visible);
1832 else if (GTK_IS_CONTAINER (widget))
1833 gtk_container_forall (GTK_CONTAINER (widget),
1834 label_mnemonics_visible_traverse_container,
1835 GINT_TO_POINTER (mnemonics_visible));
1839 label_mnemonics_visible_changed (GtkWindow *window,
1843 gboolean mnemonics_visible;
1845 g_object_get (window, "mnemonics-visible", &mnemonics_visible, NULL);
1847 gtk_container_forall (GTK_CONTAINER (window),
1848 label_mnemonics_visible_traverse_container,
1849 GINT_TO_POINTER (mnemonics_visible));
1853 gtk_label_screen_changed (GtkWidget *widget,
1854 GdkScreen *old_screen)
1856 GtkSettings *settings;
1857 gboolean shortcuts_connected;
1859 if (!gtk_widget_has_screen (widget))
1862 settings = gtk_widget_get_settings (widget);
1864 shortcuts_connected =
1865 GPOINTER_TO_INT (g_object_get_data (G_OBJECT (settings),
1866 "gtk-label-shortcuts-connected"));
1868 if (! shortcuts_connected)
1870 g_signal_connect (settings, "notify::gtk-enable-mnemonics",
1871 G_CALLBACK (label_shortcut_setting_changed),
1873 g_signal_connect (settings, "notify::gtk-enable-accels",
1874 G_CALLBACK (label_shortcut_setting_changed),
1877 g_object_set_data (G_OBJECT (settings), "gtk-label-shortcuts-connected",
1878 GINT_TO_POINTER (TRUE));
1881 label_shortcut_setting_apply (GTK_LABEL (widget));
1886 label_mnemonic_widget_weak_notify (gpointer data,
1887 GObject *where_the_object_was)
1889 GtkLabel *label = data;
1890 GtkLabelPrivate *priv = label->priv;
1892 priv->mnemonic_widget = NULL;
1893 g_object_notify (G_OBJECT (label), "mnemonic-widget");
1897 * gtk_label_set_mnemonic_widget:
1898 * @label: a #GtkLabel
1899 * @widget: (allow-none): the target #GtkWidget
1901 * If the label has been set so that it has an mnemonic key (using
1902 * i.e. gtk_label_set_markup_with_mnemonic(),
1903 * gtk_label_set_text_with_mnemonic(), gtk_label_new_with_mnemonic()
1904 * or the "use_underline" property) the label can be associated with a
1905 * widget that is the target of the mnemonic. When the label is inside
1906 * a widget (like a #GtkButton or a #GtkNotebook tab) it is
1907 * automatically associated with the correct widget, but sometimes
1908 * (i.e. when the target is a #GtkEntry next to the label) you need to
1909 * set it explicitly using this function.
1911 * The target widget will be accelerated by emitting the
1912 * GtkWidget::mnemonic-activate signal on it. The default handler for
1913 * this signal will activate the widget if there are no mnemonic collisions
1914 * and toggle focus between the colliding widgets otherwise.
1917 gtk_label_set_mnemonic_widget (GtkLabel *label,
1920 GtkLabelPrivate *priv;
1922 g_return_if_fail (GTK_IS_LABEL (label));
1927 g_return_if_fail (GTK_IS_WIDGET (widget));
1929 if (priv->mnemonic_widget)
1931 gtk_widget_remove_mnemonic_label (priv->mnemonic_widget, GTK_WIDGET (label));
1932 g_object_weak_unref (G_OBJECT (priv->mnemonic_widget),
1933 label_mnemonic_widget_weak_notify,
1936 priv->mnemonic_widget = widget;
1937 if (priv->mnemonic_widget)
1939 g_object_weak_ref (G_OBJECT (priv->mnemonic_widget),
1940 label_mnemonic_widget_weak_notify,
1942 gtk_widget_add_mnemonic_label (priv->mnemonic_widget, GTK_WIDGET (label));
1945 g_object_notify (G_OBJECT (label), "mnemonic-widget");
1949 * gtk_label_get_mnemonic_widget:
1950 * @label: a #GtkLabel
1952 * Retrieves the target of the mnemonic (keyboard shortcut) of this
1953 * label. See gtk_label_set_mnemonic_widget().
1955 * Return value: (transfer none): the target of the label's mnemonic,
1956 * or %NULL if none has been set and the default algorithm will be used.
1959 gtk_label_get_mnemonic_widget (GtkLabel *label)
1961 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
1963 return label->priv->mnemonic_widget;
1967 * gtk_label_get_mnemonic_keyval:
1968 * @label: a #GtkLabel
1970 * If the label has been set so that it has an mnemonic key this function
1971 * returns the keyval used for the mnemonic accelerator. If there is no
1972 * mnemonic set up it returns #GDK_VoidSymbol.
1974 * Returns: GDK keyval usable for accelerators, or #GDK_VoidSymbol
1977 gtk_label_get_mnemonic_keyval (GtkLabel *label)
1979 g_return_val_if_fail (GTK_IS_LABEL (label), GDK_KEY_VoidSymbol);
1981 return label->priv->mnemonic_keyval;
1985 gtk_label_set_text_internal (GtkLabel *label,
1988 GtkLabelPrivate *priv = label->priv;
1990 g_free (priv->text);
1994 gtk_label_select_region_index (label, 0, 0);
1998 gtk_label_set_label_internal (GtkLabel *label,
2001 GtkLabelPrivate *priv = label->priv;
2003 g_free (priv->label);
2007 g_object_notify (G_OBJECT (label), "label");
2011 gtk_label_set_use_markup_internal (GtkLabel *label,
2014 GtkLabelPrivate *priv = label->priv;
2017 if (priv->use_markup != val)
2019 priv->use_markup = val;
2021 g_object_notify (G_OBJECT (label), "use-markup");
2026 gtk_label_set_use_underline_internal (GtkLabel *label,
2029 GtkLabelPrivate *priv = label->priv;
2032 if (priv->use_underline != val)
2034 priv->use_underline = val;
2036 g_object_notify (G_OBJECT (label), "use-underline");
2041 gtk_label_compose_effective_attrs (GtkLabel *label)
2043 GtkLabelPrivate *priv = label->priv;
2044 PangoAttrIterator *iter;
2045 PangoAttribute *attr;
2046 GSList *iter_attrs, *l;
2050 if (priv->effective_attrs)
2052 if ((iter = pango_attr_list_get_iterator (priv->attrs)))
2056 iter_attrs = pango_attr_iterator_get_attrs (iter);
2057 for (l = iter_attrs; l; l = l->next)
2060 pango_attr_list_insert (priv->effective_attrs, attr);
2062 g_slist_free (iter_attrs);
2064 while (pango_attr_iterator_next (iter));
2065 pango_attr_iterator_destroy (iter);
2069 priv->effective_attrs =
2070 pango_attr_list_ref (priv->attrs);
2075 gtk_label_set_attributes_internal (GtkLabel *label,
2076 PangoAttrList *attrs)
2078 GtkLabelPrivate *priv = label->priv;
2081 pango_attr_list_ref (attrs);
2084 pango_attr_list_unref (priv->attrs);
2085 priv->attrs = attrs;
2087 g_object_notify (G_OBJECT (label), "attributes");
2091 /* Calculates text, attrs and mnemonic_keyval from
2092 * label, use_underline and use_markup
2095 gtk_label_recalculate (GtkLabel *label)
2097 GtkLabelPrivate *priv = label->priv;
2098 guint keyval = priv->mnemonic_keyval;
2100 if (priv->use_markup)
2101 gtk_label_set_markup_internal (label, priv->label, priv->use_underline);
2102 else if (priv->use_underline)
2103 gtk_label_set_uline_text_internal (label, priv->label);
2106 if (!priv->pattern_set)
2108 if (priv->effective_attrs)
2109 pango_attr_list_unref (priv->effective_attrs);
2110 priv->effective_attrs = NULL;
2112 gtk_label_set_text_internal (label, g_strdup (priv->label));
2115 gtk_label_compose_effective_attrs (label);
2117 if (!priv->use_underline)
2118 priv->mnemonic_keyval = GDK_KEY_VoidSymbol;
2120 if (keyval != priv->mnemonic_keyval)
2122 gtk_label_setup_mnemonic (label, keyval);
2123 g_object_notify (G_OBJECT (label), "mnemonic-keyval");
2126 gtk_label_clear_layout (label);
2127 gtk_label_clear_select_info (label);
2128 gtk_widget_queue_resize (GTK_WIDGET (label));
2132 * gtk_label_set_text:
2133 * @label: a #GtkLabel
2134 * @str: The text you want to set
2136 * Sets the text within the #GtkLabel widget. It overwrites any text that
2139 * This will also clear any previously set mnemonic accelerators.
2142 gtk_label_set_text (GtkLabel *label,
2145 g_return_if_fail (GTK_IS_LABEL (label));
2147 g_object_freeze_notify (G_OBJECT (label));
2149 gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
2150 gtk_label_set_use_markup_internal (label, FALSE);
2151 gtk_label_set_use_underline_internal (label, FALSE);
2153 gtk_label_recalculate (label);
2155 g_object_thaw_notify (G_OBJECT (label));
2159 * gtk_label_set_attributes:
2160 * @label: a #GtkLabel
2161 * @attrs: a #PangoAttrList
2163 * Sets a #PangoAttrList; the attributes in the list are applied to the
2166 * <note><para>The attributes set with this function will be applied
2167 * and merged with any other attributes previously effected by way
2168 * of the #GtkLabel:use-underline or #GtkLabel:use-markup properties.
2169 * While it is not recommended to mix markup strings with manually set
2170 * attributes, if you must; know that the attributes will be applied
2171 * to the label after the markup string is parsed.</para></note>
2174 gtk_label_set_attributes (GtkLabel *label,
2175 PangoAttrList *attrs)
2177 g_return_if_fail (GTK_IS_LABEL (label));
2179 gtk_label_set_attributes_internal (label, attrs);
2181 gtk_label_recalculate (label);
2183 gtk_label_clear_layout (label);
2184 gtk_widget_queue_resize (GTK_WIDGET (label));
2188 * gtk_label_get_attributes:
2189 * @label: a #GtkLabel
2191 * Gets the attribute list that was set on the label using
2192 * gtk_label_set_attributes(), if any. This function does
2193 * not reflect attributes that come from the labels markup
2194 * (see gtk_label_set_markup()). If you want to get the
2195 * effective attributes for the label, use
2196 * pango_layout_get_attribute (gtk_label_get_layout (label)).
2198 * Return value: (transfer none): the attribute list, or %NULL
2202 gtk_label_get_attributes (GtkLabel *label)
2204 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
2206 return label->priv->attrs;
2210 * gtk_label_set_label:
2211 * @label: a #GtkLabel
2212 * @str: the new text to set for the label
2214 * Sets the text of the label. The label is interpreted as
2215 * including embedded underlines and/or Pango markup depending
2216 * on the values of the #GtkLabel:use-underline" and
2217 * #GtkLabel:use-markup properties.
2220 gtk_label_set_label (GtkLabel *label,
2223 g_return_if_fail (GTK_IS_LABEL (label));
2225 g_object_freeze_notify (G_OBJECT (label));
2227 gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
2228 gtk_label_recalculate (label);
2230 g_object_thaw_notify (G_OBJECT (label));
2234 * gtk_label_get_label:
2235 * @label: a #GtkLabel
2237 * Fetches the text from a label widget including any embedded
2238 * underlines indicating mnemonics and Pango markup. (See
2239 * gtk_label_get_text()).
2241 * Return value: the text of the label widget. This string is
2242 * owned by the widget and must not be modified or freed.
2245 gtk_label_get_label (GtkLabel *label)
2247 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
2249 return label->priv->label;
2257 GdkColor *link_color;
2258 GdkColor *visited_link_color;
2262 start_element_handler (GMarkupParseContext *context,
2263 const gchar *element_name,
2264 const gchar **attribute_names,
2265 const gchar **attribute_values,
2269 GtkLabelPrivate *priv;
2270 UriParserData *pdata = user_data;
2272 if (strcmp (element_name, "a") == 0)
2275 const gchar *uri = NULL;
2276 const gchar *title = NULL;
2277 gboolean visited = FALSE;
2281 GdkColor *color = NULL;
2283 g_markup_parse_context_get_position (context, &line_number, &char_number);
2285 for (i = 0; attribute_names[i] != NULL; i++)
2287 const gchar *attr = attribute_names[i];
2289 if (strcmp (attr, "href") == 0)
2290 uri = attribute_values[i];
2291 else if (strcmp (attr, "title") == 0)
2292 title = attribute_values[i];
2297 G_MARKUP_ERROR_UNKNOWN_ATTRIBUTE,
2298 "Attribute '%s' is not allowed on the <a> tag "
2299 "on line %d char %d",
2300 attr, line_number, char_number);
2309 G_MARKUP_ERROR_INVALID_CONTENT,
2310 "Attribute 'href' was missing on the <a> tag "
2311 "on line %d char %d",
2312 line_number, char_number);
2317 priv = pdata->label->priv;
2318 if (priv->track_links && priv->select_info)
2321 for (l = priv->select_info->links; l; l = l->next)
2324 if (strcmp (uri, link->uri) == 0)
2326 visited = link->visited;
2333 color = pdata->visited_link_color;
2335 color = pdata->link_color;
2337 g_string_append_printf (pdata->new_str,
2338 "<span color=\"#%04x%04x%04x\" underline=\"single\">",
2343 link = g_new0 (GtkLabelLink, 1);
2344 link->uri = g_strdup (uri);
2345 link->title = g_strdup (title);
2346 link->visited = visited;
2347 pdata->links = g_list_append (pdata->links, link);
2353 g_string_append_c (pdata->new_str, '<');
2354 g_string_append (pdata->new_str, element_name);
2356 for (i = 0; attribute_names[i] != NULL; i++)
2358 const gchar *attr = attribute_names[i];
2359 const gchar *value = attribute_values[i];
2362 newvalue = g_markup_escape_text (value, -1);
2364 g_string_append_c (pdata->new_str, ' ');
2365 g_string_append (pdata->new_str, attr);
2366 g_string_append (pdata->new_str, "=\"");
2367 g_string_append (pdata->new_str, newvalue);
2368 g_string_append_c (pdata->new_str, '\"');
2372 g_string_append_c (pdata->new_str, '>');
2377 end_element_handler (GMarkupParseContext *context,
2378 const gchar *element_name,
2382 UriParserData *pdata = user_data;
2384 if (!strcmp (element_name, "a"))
2385 g_string_append (pdata->new_str, "</span>");
2388 g_string_append (pdata->new_str, "</");
2389 g_string_append (pdata->new_str, element_name);
2390 g_string_append_c (pdata->new_str, '>');
2395 text_handler (GMarkupParseContext *context,
2401 UriParserData *pdata = user_data;
2404 newtext = g_markup_escape_text (text, text_len);
2405 g_string_append (pdata->new_str, newtext);
2409 static const GMarkupParser markup_parser =
2411 start_element_handler,
2412 end_element_handler,
2419 xml_isspace (gchar c)
2421 return (c == ' ' || c == '\t' || c == '\n' || c == '\r');
2425 link_free (GtkLabelLink *link)
2428 g_free (link->title);
2433 gtk_label_get_link_colors (GtkWidget *widget,
2434 GdkColor **link_color,
2435 GdkColor **visited_link_color)
2437 GtkStyleContext *context;
2439 context = gtk_widget_get_style_context (widget);
2440 gtk_style_context_get_style (context,
2441 "link-color", link_color,
2442 "visited-link-color", visited_link_color,
2445 *link_color = gdk_color_copy (&default_link_color);
2446 if (!*visited_link_color)
2447 *visited_link_color = gdk_color_copy (&default_visited_link_color);
2451 parse_uri_markup (GtkLabel *label,
2457 GMarkupParseContext *context = NULL;
2458 const gchar *p, *end;
2459 gboolean needs_root = TRUE;
2461 UriParserData pdata;
2463 length = strlen (str);
2467 pdata.label = label;
2469 pdata.new_str = g_string_sized_new (length);
2471 gtk_label_get_link_colors (GTK_WIDGET (label), &pdata.link_color, &pdata.visited_link_color);
2473 while (p != end && xml_isspace (*p))
2476 if (end - p >= 8 && strncmp (p, "<markup>", 8) == 0)
2479 context = g_markup_parse_context_new (&markup_parser, 0, &pdata, NULL);
2483 if (!g_markup_parse_context_parse (context, "<markup>", -1, error))
2487 if (!g_markup_parse_context_parse (context, str, length, error))
2492 if (!g_markup_parse_context_parse (context, "</markup>", -1, error))
2496 if (!g_markup_parse_context_end_parse (context, error))
2499 g_markup_parse_context_free (context);
2501 *new_str = g_string_free (pdata.new_str, FALSE);
2502 *links = pdata.links;
2504 gdk_color_free (pdata.link_color);
2505 gdk_color_free (pdata.visited_link_color);
2510 g_markup_parse_context_free (context);
2511 g_string_free (pdata.new_str, TRUE);
2512 g_list_foreach (pdata.links, (GFunc)link_free, NULL);
2513 g_list_free (pdata.links);
2514 gdk_color_free (pdata.link_color);
2515 gdk_color_free (pdata.visited_link_color);
2521 gtk_label_ensure_has_tooltip (GtkLabel *label)
2523 GtkLabelPrivate *priv = label->priv;
2525 gboolean has_tooltip = FALSE;
2527 for (l = priv->select_info->links; l; l = l->next)
2529 GtkLabelLink *link = l->data;
2537 gtk_widget_set_has_tooltip (GTK_WIDGET (label), has_tooltip);
2541 gtk_label_set_markup_internal (GtkLabel *label,
2543 gboolean with_uline)
2545 GtkLabelPrivate *priv = label->priv;
2547 GError *error = NULL;
2548 PangoAttrList *attrs = NULL;
2549 gunichar accel_char = 0;
2551 GList *links = NULL;
2553 if (!parse_uri_markup (label, str, &new_str, &links, &error))
2555 g_warning ("Failed to set text from markup due to error parsing markup: %s",
2557 g_error_free (error);
2561 gtk_label_clear_links (label);
2564 gtk_label_ensure_select_info (label);
2565 priv->select_info->links = links;
2566 gtk_label_ensure_has_tooltip (label);
2571 gboolean enable_mnemonics;
2572 gboolean auto_mnemonics;
2574 g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
2575 "gtk-enable-mnemonics", &enable_mnemonics,
2576 "gtk-auto-mnemonics", &auto_mnemonics,
2579 if (!(enable_mnemonics && priv->mnemonics_visible &&
2581 (gtk_widget_is_sensitive (GTK_WIDGET (label)) &&
2582 (!priv->mnemonic_widget ||
2583 gtk_widget_is_sensitive (priv->mnemonic_widget))))))
2589 if (separate_uline_pattern (new_str, &key, &tmp, &pattern))
2598 if (!pango_parse_markup (new_str,
2600 with_uline ? '_' : 0,
2603 with_uline ? &accel_char : NULL,
2606 g_warning ("Failed to set text from markup due to error parsing markup: %s",
2609 g_error_free (error);
2616 gtk_label_set_text_internal (label, text);
2620 if (priv->effective_attrs)
2621 pango_attr_list_unref (priv->effective_attrs);
2622 priv->effective_attrs = attrs;
2625 if (accel_char != 0)
2626 priv->mnemonic_keyval = gdk_keyval_to_lower (gdk_unicode_to_keyval (accel_char));
2628 priv->mnemonic_keyval = GDK_KEY_VoidSymbol;
2632 * gtk_label_set_markup:
2633 * @label: a #GtkLabel
2634 * @str: a markup string (see <link linkend="PangoMarkupFormat">Pango markup format</link>)
2636 * Parses @str which is marked up with the <link
2637 * linkend="PangoMarkupFormat">Pango text markup language</link>, setting the
2638 * label's text and attribute list based on the parse results. If the @str is
2639 * external data, you may need to escape it with g_markup_escape_text() or
2640 * g_markup_printf_escaped()<!-- -->:
2644 * markup = g_markup_printf_escaped ("<span style=\"italic\">%s</span>", str);
2645 * gtk_label_set_markup (GTK_LABEL (label), markup);
2650 gtk_label_set_markup (GtkLabel *label,
2653 g_return_if_fail (GTK_IS_LABEL (label));
2655 g_object_freeze_notify (G_OBJECT (label));
2657 gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
2658 gtk_label_set_use_markup_internal (label, TRUE);
2659 gtk_label_set_use_underline_internal (label, FALSE);
2661 gtk_label_recalculate (label);
2663 g_object_thaw_notify (G_OBJECT (label));
2667 * gtk_label_set_markup_with_mnemonic:
2668 * @label: a #GtkLabel
2669 * @str: a markup string (see
2670 * <link linkend="PangoMarkupFormat">Pango markup format</link>)
2672 * Parses @str which is marked up with the
2673 * <link linkend="PangoMarkupFormat">Pango text markup language</link>,
2674 * setting the label's text and attribute list based on the parse results.
2675 * If characters in @str are preceded by an underscore, they are underlined
2676 * indicating that they represent a keyboard accelerator called a mnemonic.
2678 * The mnemonic key can be used to activate another widget, chosen
2679 * automatically, or explicitly using gtk_label_set_mnemonic_widget().
2682 gtk_label_set_markup_with_mnemonic (GtkLabel *label,
2685 g_return_if_fail (GTK_IS_LABEL (label));
2687 g_object_freeze_notify (G_OBJECT (label));
2689 gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
2690 gtk_label_set_use_markup_internal (label, TRUE);
2691 gtk_label_set_use_underline_internal (label, TRUE);
2693 gtk_label_recalculate (label);
2695 g_object_thaw_notify (G_OBJECT (label));
2699 * gtk_label_get_text:
2700 * @label: a #GtkLabel
2702 * Fetches the text from a label widget, as displayed on the
2703 * screen. This does not include any embedded underlines
2704 * indicating mnemonics or Pango markup. (See gtk_label_get_label())
2706 * Return value: the text in the label widget. This is the internal
2707 * string used by the label, and must not be modified.
2710 gtk_label_get_text (GtkLabel *label)
2712 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
2714 return label->priv->text;
2717 static PangoAttrList *
2718 gtk_label_pattern_to_attrs (GtkLabel *label,
2719 const gchar *pattern)
2721 GtkLabelPrivate *priv = label->priv;
2723 const char *p = priv->text;
2724 const char *q = pattern;
2725 PangoAttrList *attrs;
2727 attrs = pango_attr_list_new ();
2731 while (*p && *q && *q != '_')
2733 p = g_utf8_next_char (p);
2737 while (*p && *q && *q == '_')
2739 p = g_utf8_next_char (p);
2745 PangoAttribute *attr = pango_attr_underline_new (PANGO_UNDERLINE_LOW);
2746 attr->start_index = start - priv->text;
2747 attr->end_index = p - priv->text;
2749 pango_attr_list_insert (attrs, attr);
2759 gtk_label_set_pattern_internal (GtkLabel *label,
2760 const gchar *pattern,
2761 gboolean is_mnemonic)
2763 GtkLabelPrivate *priv = label->priv;
2764 PangoAttrList *attrs;
2765 gboolean enable_mnemonics;
2766 gboolean auto_mnemonics;
2768 if (priv->pattern_set)
2773 g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
2774 "gtk-enable-mnemonics", &enable_mnemonics,
2775 "gtk-auto-mnemonics", &auto_mnemonics,
2778 if (enable_mnemonics && priv->mnemonics_visible && pattern &&
2780 (gtk_widget_is_sensitive (GTK_WIDGET (label)) &&
2781 (!priv->mnemonic_widget ||
2782 gtk_widget_is_sensitive (priv->mnemonic_widget)))))
2783 attrs = gtk_label_pattern_to_attrs (label, pattern);
2788 attrs = gtk_label_pattern_to_attrs (label, pattern);
2790 if (priv->effective_attrs)
2791 pango_attr_list_unref (priv->effective_attrs);
2792 priv->effective_attrs = attrs;
2796 * gtk_label_set_pattern:
2797 * @label: The #GtkLabel you want to set the pattern to.
2798 * @pattern: The pattern as described above.
2800 * The pattern of underlines you want under the existing text within the
2801 * #GtkLabel widget. For example if the current text of the label says
2802 * "FooBarBaz" passing a pattern of "___ ___" will underline
2803 * "Foo" and "Baz" but not "Bar".
2806 gtk_label_set_pattern (GtkLabel *label,
2807 const gchar *pattern)
2809 GtkLabelPrivate *priv;
2811 g_return_if_fail (GTK_IS_LABEL (label));
2815 priv->pattern_set = FALSE;
2819 gtk_label_set_pattern_internal (label, pattern, FALSE);
2820 priv->pattern_set = TRUE;
2823 gtk_label_recalculate (label);
2825 gtk_label_clear_layout (label);
2826 gtk_widget_queue_resize (GTK_WIDGET (label));
2831 * gtk_label_set_justify:
2832 * @label: a #GtkLabel
2833 * @jtype: a #GtkJustification
2835 * Sets the alignment of the lines in the text of the label relative to
2836 * each other. %GTK_JUSTIFY_LEFT is the default value when the
2837 * widget is first created with gtk_label_new(). If you instead want
2838 * to set the alignment of the label as a whole, use
2839 * gtk_misc_set_alignment() instead. gtk_label_set_justify() has no
2840 * effect on labels containing only a single line.
2843 gtk_label_set_justify (GtkLabel *label,
2844 GtkJustification jtype)
2846 GtkLabelPrivate *priv;
2848 g_return_if_fail (GTK_IS_LABEL (label));
2849 g_return_if_fail (jtype >= GTK_JUSTIFY_LEFT && jtype <= GTK_JUSTIFY_FILL);
2853 if ((GtkJustification) priv->jtype != jtype)
2855 priv->jtype = jtype;
2857 /* No real need to be this drastic, but easier than duplicating the code */
2858 gtk_label_clear_layout (label);
2860 g_object_notify (G_OBJECT (label), "justify");
2861 gtk_widget_queue_resize (GTK_WIDGET (label));
2866 * gtk_label_get_justify:
2867 * @label: a #GtkLabel
2869 * Returns the justification of the label. See gtk_label_set_justify().
2871 * Return value: #GtkJustification
2874 gtk_label_get_justify (GtkLabel *label)
2876 g_return_val_if_fail (GTK_IS_LABEL (label), 0);
2878 return label->priv->jtype;
2882 * gtk_label_set_ellipsize:
2883 * @label: a #GtkLabel
2884 * @mode: a #PangoEllipsizeMode
2886 * Sets the mode used to ellipsize (add an ellipsis: "...") to the text
2887 * if there is not enough space to render the entire string.
2892 gtk_label_set_ellipsize (GtkLabel *label,
2893 PangoEllipsizeMode mode)
2895 GtkLabelPrivate *priv;
2897 g_return_if_fail (GTK_IS_LABEL (label));
2898 g_return_if_fail (mode >= PANGO_ELLIPSIZE_NONE && mode <= PANGO_ELLIPSIZE_END);
2902 if ((PangoEllipsizeMode) priv->ellipsize != mode)
2904 priv->ellipsize = mode;
2906 /* No real need to be this drastic, but easier than duplicating the code */
2907 gtk_label_clear_layout (label);
2909 g_object_notify (G_OBJECT (label), "ellipsize");
2910 gtk_widget_queue_resize (GTK_WIDGET (label));
2915 * gtk_label_get_ellipsize:
2916 * @label: a #GtkLabel
2918 * Returns the ellipsizing position of the label. See gtk_label_set_ellipsize().
2920 * Return value: #PangoEllipsizeMode
2925 gtk_label_get_ellipsize (GtkLabel *label)
2927 g_return_val_if_fail (GTK_IS_LABEL (label), PANGO_ELLIPSIZE_NONE);
2929 return label->priv->ellipsize;
2933 * gtk_label_set_width_chars:
2934 * @label: a #GtkLabel
2935 * @n_chars: the new desired width, in characters.
2937 * Sets the desired width in characters of @label to @n_chars.
2942 gtk_label_set_width_chars (GtkLabel *label,
2945 GtkLabelPrivate *priv;
2947 g_return_if_fail (GTK_IS_LABEL (label));
2951 if (priv->width_chars != n_chars)
2953 priv->width_chars = n_chars;
2954 g_object_notify (G_OBJECT (label), "width-chars");
2955 gtk_widget_queue_resize (GTK_WIDGET (label));
2960 * gtk_label_get_width_chars:
2961 * @label: a #GtkLabel
2963 * Retrieves the desired width of @label, in characters. See
2964 * gtk_label_set_width_chars().
2966 * Return value: the width of the label in characters.
2971 gtk_label_get_width_chars (GtkLabel *label)
2973 g_return_val_if_fail (GTK_IS_LABEL (label), -1);
2975 return label->priv->width_chars;
2979 * gtk_label_set_max_width_chars:
2980 * @label: a #GtkLabel
2981 * @n_chars: the new desired maximum width, in characters.
2983 * Sets the desired maximum width in characters of @label to @n_chars.
2988 gtk_label_set_max_width_chars (GtkLabel *label,
2991 GtkLabelPrivate *priv;
2993 g_return_if_fail (GTK_IS_LABEL (label));
2997 if (priv->max_width_chars != n_chars)
2999 priv->max_width_chars = n_chars;
3001 g_object_notify (G_OBJECT (label), "max-width-chars");
3002 gtk_widget_queue_resize (GTK_WIDGET (label));
3007 * gtk_label_get_max_width_chars:
3008 * @label: a #GtkLabel
3010 * Retrieves the desired maximum width of @label, in characters. See
3011 * gtk_label_set_width_chars().
3013 * Return value: the maximum width of the label in characters.
3018 gtk_label_get_max_width_chars (GtkLabel *label)
3020 g_return_val_if_fail (GTK_IS_LABEL (label), -1);
3022 return label->priv->max_width_chars;
3026 * gtk_label_set_line_wrap:
3027 * @label: a #GtkLabel
3028 * @wrap: the setting
3030 * Toggles line wrapping within the #GtkLabel widget. %TRUE makes it break
3031 * lines if text exceeds the widget's size. %FALSE lets the text get cut off
3032 * by the edge of the widget if it exceeds the widget size.
3034 * Note that setting line wrapping to %TRUE does not make the label
3035 * wrap at its parent container's width, because GTK+ widgets
3036 * conceptually can't make their requisition depend on the parent
3037 * container's size. For a label that wraps at a specific position,
3038 * set the label's width using gtk_widget_set_size_request().
3041 gtk_label_set_line_wrap (GtkLabel *label,
3044 GtkLabelPrivate *priv;
3046 g_return_if_fail (GTK_IS_LABEL (label));
3050 wrap = wrap != FALSE;
3052 if (priv->wrap != wrap)
3056 gtk_label_clear_layout (label);
3057 gtk_widget_queue_resize (GTK_WIDGET (label));
3058 g_object_notify (G_OBJECT (label), "wrap");
3063 * gtk_label_get_line_wrap:
3064 * @label: a #GtkLabel
3066 * Returns whether lines in the label are automatically wrapped.
3067 * See gtk_label_set_line_wrap().
3069 * Return value: %TRUE if the lines of the label are automatically wrapped.
3072 gtk_label_get_line_wrap (GtkLabel *label)
3074 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
3076 return label->priv->wrap;
3080 * gtk_label_set_line_wrap_mode:
3081 * @label: a #GtkLabel
3082 * @wrap_mode: the line wrapping mode
3084 * If line wrapping is on (see gtk_label_set_line_wrap()) this controls how
3085 * the line wrapping is done. The default is %PANGO_WRAP_WORD which means
3086 * wrap on word boundaries.
3091 gtk_label_set_line_wrap_mode (GtkLabel *label,
3092 PangoWrapMode wrap_mode)
3094 GtkLabelPrivate *priv;
3096 g_return_if_fail (GTK_IS_LABEL (label));
3100 if (priv->wrap_mode != wrap_mode)
3102 priv->wrap_mode = wrap_mode;
3103 g_object_notify (G_OBJECT (label), "wrap-mode");
3105 gtk_widget_queue_resize (GTK_WIDGET (label));
3110 * gtk_label_get_line_wrap_mode:
3111 * @label: a #GtkLabel
3113 * Returns line wrap mode used by the label. See gtk_label_set_line_wrap_mode().
3115 * Return value: %TRUE if the lines of the label are automatically wrapped.
3120 gtk_label_get_line_wrap_mode (GtkLabel *label)
3122 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
3124 return label->priv->wrap_mode;
3128 gtk_label_destroy (GtkWidget *widget)
3130 GtkLabel *label = GTK_LABEL (widget);
3132 gtk_label_set_mnemonic_widget (label, NULL);
3134 GTK_WIDGET_CLASS (gtk_label_parent_class)->destroy (widget);
3138 gtk_label_finalize (GObject *object)
3140 GtkLabel *label = GTK_LABEL (object);
3141 GtkLabelPrivate *priv = label->priv;
3143 g_free (priv->label);
3144 g_free (priv->text);
3147 g_object_unref (priv->layout);
3150 pango_attr_list_unref (priv->attrs);
3152 if (priv->effective_attrs)
3153 pango_attr_list_unref (priv->effective_attrs);
3155 gtk_label_clear_links (label);
3156 g_free (priv->select_info);
3158 G_OBJECT_CLASS (gtk_label_parent_class)->finalize (object);
3162 gtk_label_clear_layout (GtkLabel *label)
3164 GtkLabelPrivate *priv = label->priv;
3168 g_object_unref (priv->layout);
3169 priv->layout = NULL;
3171 //gtk_label_clear_links (label);
3175 static PangoFontMetrics *
3176 get_font_metrics (PangoContext *context, GtkWidget *widget)
3178 GtkStyleContext *style_context;
3179 const PangoFontDescription *font;
3180 PangoFontMetrics *retval;
3182 style_context = gtk_widget_get_style_context (widget);
3183 font = gtk_style_context_get_font (style_context, GTK_STATE_FLAG_NORMAL);
3185 retval = pango_context_get_metrics (context,
3187 pango_context_get_language (context));
3193 * gtk_label_get_measuring_layout:
3195 * @existing_layout: %NULL or an existing layout already in use.
3196 * @width: the width to measure with in pango units, or -1 for infinite
3197 * @height: the height to measure with in pango units, or -1 for infinite
3199 * Gets a layout that can be used for measuring sizes. The returned
3200 * layout will be identical to the label's layout except for the
3201 * layout's width, which will be set to @width. Do not modify the returned
3204 * Returns: a new reference to a pango layout
3206 static PangoLayout *
3207 gtk_label_get_measuring_layout (GtkLabel * label,
3208 PangoLayout *existing_layout,
3212 GtkLabelPrivate *priv = label->priv;
3213 PangoRectangle rect;
3216 if (existing_layout != NULL)
3218 if (existing_layout != priv->layout)
3220 pango_layout_set_width (existing_layout, width);
3221 pango_layout_set_height (existing_layout, height);
3222 return existing_layout;
3225 g_object_unref (existing_layout);
3228 gtk_label_ensure_layout (label);
3230 if (pango_layout_get_width (priv->layout) == width &&
3231 pango_layout_get_height (priv->layout) == height)
3233 g_object_ref (priv->layout);
3234 return priv->layout;
3237 /* We can use the label's own layout if we're not allocated a size yet,
3238 * because we don't need it to be properly setup at that point.
3239 * This way we can make use of caching upon the label's creation.
3241 if (gtk_widget_get_allocated_width (GTK_WIDGET (label)) <= 1)
3243 g_object_ref (priv->layout);
3244 pango_layout_set_width (priv->layout, width);
3245 pango_layout_set_height (priv->layout, height);
3246 return priv->layout;
3249 /* oftentimes we want to measure a width that is far wider than the current width,
3250 * even though the layout would not change if we made it wider. In that case, we
3251 * can just return the current layout, because for measuring purposes, it will be
3254 pango_layout_get_extents (priv->layout, NULL, &rect);
3255 if ((width == -1 || rect.width <= width) &&
3256 (height == -1 || rect.height <= height) &&
3257 !pango_layout_is_wrapped (priv->layout) &&
3258 !pango_layout_is_ellipsized (priv->layout))
3260 g_object_ref (priv->layout);
3261 return priv->layout;
3264 copy = pango_layout_copy (priv->layout);
3265 pango_layout_set_width (copy, width);
3266 pango_layout_set_height (copy, height);
3271 gtk_label_update_layout_width (GtkLabel *label)
3273 GtkLabelPrivate *priv = label->priv;
3274 GtkWidget *widget = GTK_WIDGET (label);
3276 g_assert (priv->layout);
3278 if (priv->ellipsize || priv->wrap)
3280 PangoRectangle logical;
3284 gtk_misc_get_padding (GTK_MISC (label), &xpad, &ypad);
3286 width = gtk_widget_get_allocated_width (GTK_WIDGET (label)) - xpad * 2;
3287 height = gtk_widget_get_allocated_height (GTK_WIDGET (label)) - ypad * 2;
3289 if (priv->have_transform)
3291 PangoContext *context = gtk_widget_get_pango_context (widget);
3292 const PangoMatrix *matrix = pango_context_get_matrix (context);
3293 const gdouble dx = matrix->xx; /* cos (M_PI * angle / 180) */
3294 const gdouble dy = matrix->xy; /* sin (M_PI * angle / 180) */
3296 pango_layout_set_width (priv->layout, -1);
3297 pango_layout_set_height (priv->layout, -1);
3298 pango_layout_get_pixel_extents (priv->layout, NULL, &logical);
3300 if (fabs (dy) < 0.01)
3302 if (logical.width > width)
3303 pango_layout_set_width (priv->layout, width * PANGO_SCALE);
3305 else if (fabs (dx) < 0.01)
3307 if (logical.width > height)
3308 pango_layout_set_width (priv->layout, height * PANGO_SCALE);
3312 gdouble x0, y0, x1, y1, length;
3317 y0 = dx ? x0 * dy / dx : G_MAXDOUBLE;
3318 vertical = fabs (y0) > height / 2;
3323 x0 = dy ? y0 * dx / dy : G_MAXDOUBLE;
3326 length = 2 * sqrt (x0 * x0 + y0 * y0);
3327 pango_layout_set_width (priv->layout, rint (length * PANGO_SCALE));
3328 pango_layout_get_pixel_size (priv->layout, NULL, &cy);
3335 y0 = height/2 + y1 - y0;
3340 x0 = width/2 + x1 - x0;
3344 length = length - sqrt (x0 * x0 + y0 * y0) * 2;
3345 pango_layout_set_width (priv->layout, rint (length * PANGO_SCALE));
3350 pango_layout_set_width (priv->layout, width * PANGO_SCALE);
3351 pango_layout_set_height (priv->layout, priv->ellipsize ? height * PANGO_SCALE : -1);
3356 pango_layout_set_width (priv->layout, -1);
3357 pango_layout_set_height (priv->layout, -1);
3362 gtk_label_ensure_layout (GtkLabel *label)
3364 GtkLabelPrivate *priv = label->priv;
3368 widget = GTK_WIDGET (label);
3370 rtl = gtk_widget_get_direction (widget) == GTK_TEXT_DIR_RTL;
3374 PangoAlignment align = PANGO_ALIGN_LEFT; /* Quiet gcc */
3375 gdouble angle = gtk_label_get_angle (label);
3377 if (angle != 0.0 && !priv->select_info)
3379 PangoMatrix matrix = PANGO_MATRIX_INIT;
3381 /* We rotate the standard singleton PangoContext for the widget,
3382 * depending on the fact that it's meant pretty much exclusively
3385 pango_matrix_rotate (&matrix, angle);
3387 pango_context_set_matrix (gtk_widget_get_pango_context (widget), &matrix);
3389 priv->have_transform = TRUE;
3393 if (priv->have_transform)
3394 pango_context_set_matrix (gtk_widget_get_pango_context (widget), NULL);
3396 priv->have_transform = FALSE;
3399 priv->layout = gtk_widget_create_pango_layout (widget, priv->text);
3401 if (priv->effective_attrs)
3402 pango_layout_set_attributes (priv->layout, priv->effective_attrs);
3404 gtk_label_rescan_links (label);
3406 switch (priv->jtype)
3408 case GTK_JUSTIFY_LEFT:
3409 align = rtl ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_LEFT;
3411 case GTK_JUSTIFY_RIGHT:
3412 align = rtl ? PANGO_ALIGN_LEFT : PANGO_ALIGN_RIGHT;
3414 case GTK_JUSTIFY_CENTER:
3415 align = PANGO_ALIGN_CENTER;
3417 case GTK_JUSTIFY_FILL:
3418 align = rtl ? PANGO_ALIGN_RIGHT : PANGO_ALIGN_LEFT;
3419 pango_layout_set_justify (priv->layout, TRUE);
3422 g_assert_not_reached();
3425 pango_layout_set_alignment (priv->layout, align);
3426 pango_layout_set_ellipsize (priv->layout, priv->ellipsize);
3427 pango_layout_set_wrap (priv->layout, priv->wrap_mode);
3428 pango_layout_set_single_paragraph_mode (priv->layout, priv->single_line_mode);
3430 gtk_label_update_layout_width (label);
3435 get_single_line_height (GtkWidget *widget,
3436 PangoLayout *layout)
3438 PangoContext *context;
3439 PangoFontMetrics *metrics;
3440 gint ascent, descent;
3442 context = pango_layout_get_context (layout);
3443 metrics = get_font_metrics (context, widget);
3444 ascent = pango_font_metrics_get_ascent (metrics);
3445 descent = pango_font_metrics_get_descent (metrics);
3446 pango_font_metrics_unref (metrics);
3448 return ascent + descent;
3451 static GtkSizeRequestMode
3452 gtk_label_get_request_mode (GtkWidget *widget)
3454 GtkLabel *label = GTK_LABEL (widget);
3455 gdouble angle = gtk_label_get_angle (label);
3457 if (label->priv->wrap)
3458 return (angle == 90 || angle == 270) ?
3459 GTK_SIZE_REQUEST_WIDTH_FOR_HEIGHT :
3460 GTK_SIZE_REQUEST_HEIGHT_FOR_WIDTH;
3462 return GTK_SIZE_REQUEST_CONSTANT_SIZE;
3466 get_size_for_allocation (GtkLabel *label,
3467 GtkOrientation orientation,
3472 GtkLabelPrivate *priv = label->priv;
3473 PangoLayout *layout;
3476 layout = gtk_label_get_measuring_layout (label, NULL, allocation * PANGO_SCALE, -1);
3478 pango_layout_get_pixel_size (layout, NULL, &text_height);
3481 *minimum_size = text_height;
3485 if (priv->ellipsize && priv->wrap)
3487 layout = gtk_label_get_measuring_layout (label, layout, allocation * PANGO_SCALE, G_MAXINT);
3488 pango_layout_get_pixel_size (layout, NULL, &text_height);
3491 *natural_size = text_height;
3494 g_object_unref (layout);
3498 get_char_pixels (GtkWidget *label,
3499 PangoLayout *layout)
3501 PangoContext *context;
3502 PangoFontMetrics *metrics;
3503 gint char_width, digit_width;
3505 context = pango_layout_get_context (layout);
3506 metrics = get_font_metrics (context, GTK_WIDGET (label));
3507 char_width = pango_font_metrics_get_approximate_char_width (metrics);
3508 digit_width = pango_font_metrics_get_approximate_digit_width (metrics);
3509 pango_font_metrics_unref (metrics);
3511 return MAX (char_width, digit_width);;
3515 gtk_label_get_preferred_layout_size (GtkLabel *label,
3516 PangoRectangle *required,
3517 PangoRectangle *natural)
3519 GtkLabelPrivate *priv = label->priv;
3520 PangoLayout *layout;
3522 /* "width-chars" Hard-coded minimum width:
3523 * - minimum size should be MAX (width-chars, strlen ("..."));
3524 * - natural size should be MAX (width-chars, strlen (priv->text));
3526 * "max-width-chars" User specified maximum size requisition
3527 * - minimum size should be MAX (width-chars, 0)
3528 * - natural size should be MIN (max-width-chars, strlen (priv->text))
3530 * For ellipsizing labels; if max-width-chars is specified: either it is used as
3531 * a minimum size or the label text as a minimum size (natural size still overflows).
3533 * For wrapping labels; A reasonable minimum size is useful to naturally layout
3534 * interfaces automatically. In this case if no "width-chars" is specified, the minimum
3535 * width will default to the wrap guess that gtk_label_ensure_layout() does.
3538 /* Start off with the pixel extents of an as-wide-as-possible layout */
3539 layout = gtk_label_get_measuring_layout (label, NULL, -1, -1);
3541 pango_layout_get_extents (layout, NULL, natural);
3542 natural->x = natural->y = 0;
3545 natural->height = get_single_line_height (GTK_WIDGET (label), layout);
3547 if (priv->ellipsize || priv->wrap)
3549 /* a layout with width 0 will be as small as humanly possible */
3550 layout = gtk_label_get_measuring_layout (label, layout, 0, -1);
3552 pango_layout_get_extents (layout, NULL, required);
3554 /* can happen when Pango decides to ellipsize text */
3555 if (required->width > natural->width)
3556 required->width = natural->width;
3558 required->x = required->y = 0;
3559 required->height = natural->height;
3563 *required = *natural;
3566 if (priv->width_chars > -1 || priv->max_width_chars > -1)
3570 char_pixels = get_char_pixels (GTK_WIDGET (label), layout);
3572 if (priv->width_chars > -1)
3573 required->width = MAX (required->width, char_pixels * priv->width_chars);
3575 if (priv->max_width_chars > -1)
3576 natural->width = MIN (natural->width, priv->max_width_chars * char_pixels);
3577 natural->width = MAX (natural->width, required->width);
3580 g_object_unref (layout);
3584 gtk_label_get_preferred_size (GtkWidget *widget,
3585 GtkOrientation orientation,
3589 GtkLabel *label = GTK_LABEL (widget);
3590 GtkLabelPrivate *priv = label->priv;
3591 PangoRectangle required_rect;
3592 PangoRectangle natural_rect;
3595 gtk_label_get_preferred_layout_size (label, &required_rect, &natural_rect);
3597 /* Now that we have minimum and natural sizes in pango extents, apply a possible transform */
3598 if (priv->have_transform)
3601 PangoContext *context;
3602 const PangoMatrix *matrix;
3604 copy = pango_layout_copy (priv->layout);
3605 context = pango_layout_get_context (copy);
3606 matrix = pango_context_get_matrix (context);
3608 pango_layout_set_width (copy, -1);
3609 pango_layout_set_ellipsize (copy, PANGO_ELLIPSIZE_NONE);
3611 pango_layout_get_extents (copy, NULL, &natural_rect);
3612 g_object_unref (copy);
3614 pango_matrix_transform_rectangle (matrix, &required_rect);
3615 pango_matrix_transform_rectangle (matrix, &natural_rect);
3617 /* Bump the natural size in case of ellipsize to ensure pango has
3618 * enough space in the angles (note, we could alternatively set the
3619 * layout to not ellipsize when we know we have been allocated our
3620 * full natural size, or it may be that pango needs a fix here).
3622 if (priv->ellipsize && priv->angle != 0 && priv->angle != 90 &&
3623 priv->angle != 180 && priv->angle != 270 && priv->angle != 360)
3625 /* For some reason we only need this at about 110 degrees, and only
3626 * when gaining in height
3628 natural_rect.height += ROTATION_ELLIPSIZE_PADDING * 2 * PANGO_SCALE;
3629 natural_rect.width += ROTATION_ELLIPSIZE_PADDING * 2 * PANGO_SCALE;
3633 required_rect.width = PANGO_PIXELS_CEIL (required_rect.width);
3634 required_rect.height = PANGO_PIXELS_CEIL (required_rect.height);
3636 natural_rect.width = PANGO_PIXELS_CEIL (natural_rect.width);
3637 natural_rect.height = PANGO_PIXELS_CEIL (natural_rect.height);
3639 gtk_misc_get_padding (GTK_MISC (label), &xpad, &ypad);
3641 if (orientation == GTK_ORIENTATION_HORIZONTAL)
3643 /* Note, we cant use get_size_for_allocation() when rotating
3644 * ellipsized labels.
3646 if (!(priv->ellipsize && priv->have_transform) &&
3647 (priv->angle == 90 || priv->angle == 270))
3649 /* Doing a h4w request on a rotated label here, return the
3650 * required width for the minimum height.
3652 get_size_for_allocation (label,
3653 GTK_ORIENTATION_VERTICAL,
3654 required_rect.height,
3655 minimum_size, natural_size);
3660 /* Normal desired width */
3661 *minimum_size = required_rect.width;
3662 *natural_size = natural_rect.width;
3665 *minimum_size += xpad * 2;
3666 *natural_size += xpad * 2;
3668 else /* GTK_ORIENTATION_VERTICAL */
3670 /* Note, we cant use get_size_for_allocation() when rotating
3671 * ellipsized labels.
3673 if (!(priv->ellipsize && priv->have_transform) &&
3674 (priv->angle == 0 || priv->angle == 180 || priv->angle == 360))
3676 /* Doing a w4h request on a label here, return the required
3677 * height for the minimum width.
3679 get_size_for_allocation (label,
3680 GTK_ORIENTATION_HORIZONTAL,
3681 required_rect.width,
3682 minimum_size, natural_size);
3686 /* A vertically rotated label does w4h, so return the base
3687 * desired height (text length)
3689 *minimum_size = required_rect.height;
3690 *natural_size = natural_rect.height;
3693 *minimum_size += ypad * 2;
3694 *natural_size += ypad * 2;
3700 gtk_label_get_preferred_width (GtkWidget *widget,
3704 gtk_label_get_preferred_size (widget, GTK_ORIENTATION_HORIZONTAL, minimum_size, natural_size);
3708 gtk_label_get_preferred_height (GtkWidget *widget,
3712 gtk_label_get_preferred_size (widget, GTK_ORIENTATION_VERTICAL, minimum_size, natural_size);
3716 gtk_label_get_preferred_width_for_height (GtkWidget *widget,
3718 gint *minimum_width,
3719 gint *natural_width)
3721 GtkLabel *label = GTK_LABEL (widget);
3722 GtkLabelPrivate *priv = label->priv;
3724 if (priv->wrap && (priv->angle == 90 || priv->angle == 270))
3728 gtk_misc_get_padding (GTK_MISC (label), &xpad, &ypad);
3731 gtk_label_clear_layout (label);
3733 get_size_for_allocation (label, GTK_ORIENTATION_VERTICAL,
3734 MAX (1, height - (ypad * 2)),
3735 minimum_width, natural_width);
3738 *minimum_width += xpad * 2;
3741 *natural_width += xpad * 2;
3744 GTK_WIDGET_GET_CLASS (widget)->get_preferred_width (widget, minimum_width, natural_width);
3748 gtk_label_get_preferred_height_for_width (GtkWidget *widget,
3750 gint *minimum_height,
3751 gint *natural_height)
3753 GtkLabel *label = GTK_LABEL (widget);
3754 GtkLabelPrivate *priv = label->priv;
3756 if (priv->wrap && (priv->angle == 0 || priv->angle == 180 || priv->angle == 360))
3760 gtk_misc_get_padding (GTK_MISC (label), &xpad, &ypad);
3763 gtk_label_clear_layout (label);
3765 get_size_for_allocation (label, GTK_ORIENTATION_HORIZONTAL,
3766 MAX (1, width - xpad * 2),
3767 minimum_height, natural_height);
3770 *minimum_height += ypad * 2;
3773 *natural_height += ypad * 2;
3776 GTK_WIDGET_GET_CLASS (widget)->get_preferred_height (widget, minimum_height, natural_height);
3780 gtk_label_size_allocate (GtkWidget *widget,
3781 GtkAllocation *allocation)
3783 GtkLabel *label = GTK_LABEL (widget);
3784 GtkLabelPrivate *priv = label->priv;
3786 GTK_WIDGET_CLASS (gtk_label_parent_class)->size_allocate (widget, allocation);
3789 gtk_label_update_layout_width (label);
3791 if (priv->select_info && priv->select_info->window)
3793 gdk_window_move_resize (priv->select_info->window,
3797 allocation->height);
3802 gtk_label_update_cursor (GtkLabel *label)
3804 GtkLabelPrivate *priv = label->priv;
3807 if (!priv->select_info)
3810 widget = GTK_WIDGET (label);
3812 if (gtk_widget_get_realized (widget))
3814 GdkDisplay *display;
3817 if (gtk_widget_is_sensitive (widget))
3819 display = gtk_widget_get_display (widget);
3821 if (priv->select_info->active_link)
3822 cursor = gdk_cursor_new_for_display (display, GDK_HAND2);
3823 else if (priv->select_info->selectable)
3824 cursor = gdk_cursor_new_for_display (display, GDK_XTERM);
3831 gdk_window_set_cursor (priv->select_info->window, cursor);
3834 g_object_unref (cursor);
3839 gtk_label_state_flags_changed (GtkWidget *widget,
3840 GtkStateFlags prev_state)
3842 GtkLabel *label = GTK_LABEL (widget);
3843 GtkLabelPrivate *priv = label->priv;
3845 if (priv->select_info)
3847 if (!gtk_widget_is_sensitive (widget))
3848 gtk_label_select_region (label, 0, 0);
3850 gtk_label_update_cursor (label);
3853 /* We have to clear the layout, fonts etc. may have changed */
3854 gtk_label_clear_layout (label);
3856 if (GTK_WIDGET_CLASS (gtk_label_parent_class)->state_flags_changed)
3857 GTK_WIDGET_CLASS (gtk_label_parent_class)->state_flags_changed (widget, prev_state);
3861 gtk_label_style_updated (GtkWidget *widget)
3863 GtkLabel *label = GTK_LABEL (widget);
3865 GTK_WIDGET_CLASS (gtk_label_parent_class)->style_updated (widget);
3867 /* We have to clear the layout, fonts etc. may have changed */
3868 gtk_label_clear_layout (label);
3872 gtk_label_direction_changed (GtkWidget *widget,
3873 GtkTextDirection previous_dir)
3875 GtkLabel *label = GTK_LABEL (widget);
3876 GtkLabelPrivate *priv = label->priv;
3879 pango_layout_context_changed (priv->layout);
3881 GTK_WIDGET_CLASS (gtk_label_parent_class)->direction_changed (widget, previous_dir);
3885 get_layout_location (GtkLabel *label,
3889 GtkAllocation allocation;
3892 GtkLabelPrivate *priv;
3893 gint req_width, x, y;
3896 gfloat xalign, yalign;
3897 PangoRectangle logical;
3899 misc = GTK_MISC (label);
3900 widget = GTK_WIDGET (label);
3903 gtk_misc_get_alignment (misc, &xalign, &yalign);
3904 gtk_misc_get_padding (misc, &xpad, &ypad);
3906 if (gtk_widget_get_direction (widget) != GTK_TEXT_DIR_LTR)
3907 xalign = 1.0 - xalign;
3909 pango_layout_get_extents (priv->layout, NULL, &logical);
3911 if (priv->have_transform)
3913 PangoContext *context = gtk_widget_get_pango_context (widget);
3914 const PangoMatrix *matrix = pango_context_get_matrix (context);
3915 pango_matrix_transform_rectangle (matrix, &logical);
3918 pango_extents_to_pixels (&logical, NULL);
3920 req_width = logical.width;
3921 req_height = logical.height;
3923 req_width += 2 * xpad;
3924 req_height += 2 * ypad;
3926 gtk_widget_get_allocation (widget, &allocation);
3928 x = floor (allocation.x + xpad + xalign * (allocation.width - req_width) - logical.x);
3931 /* bgo#315462 - For single-line labels, *do* align the requisition with
3932 * respect to the allocation, even if we are under-allocated. For multi-line
3933 * labels, always show the top of the text when they are under-allocated. The
3934 * rationale is this:
3936 * - Single-line labels appear in GtkButtons, and it is very easy to get them
3937 * to be smaller than their requisition. The button may clip the label, but
3938 * the label will still be able to show most of itself and the focus
3939 * rectangle. Also, it is fairly easy to read a single line of clipped text.
3941 * - Multi-line labels should not be clipped to showing "something in the
3942 * middle". You want to read the first line, at least, to get some context.
3944 if (pango_layout_get_line_count (priv->layout) == 1)
3945 y = floor (allocation.y + ypad + (allocation.height - req_height) * yalign) - logical.y;
3947 y = floor (allocation.y + ypad + MAX ((allocation.height - req_height) * yalign, 0)) - logical.y;
3956 static PangoDirection
3957 get_cursor_direction (GtkLabel *label)
3959 GtkLabelPrivate *priv = label->priv;
3962 g_assert (priv->select_info);
3964 gtk_label_ensure_layout (label);
3966 for (l = pango_layout_get_lines_readonly (priv->layout); l; l = l->next)
3968 PangoLayoutLine *line = l->data;
3970 /* If priv->select_info->selection_end is at the very end of
3971 * the line, we don't know if the cursor is on this line or
3972 * the next without looking ahead at the next line. (End
3973 * of paragraph is different from line break.) But it's
3974 * definitely in this paragraph, which is good enough
3975 * to figure out the resolved direction.
3977 if (line->start_index + line->length >= priv->select_info->selection_end)
3978 return line->resolved_dir;
3981 return PANGO_DIRECTION_LTR;
3984 static GtkLabelLink *
3985 gtk_label_get_focus_link (GtkLabel *label)
3987 GtkLabelPrivate *priv = label->priv;
3988 GtkLabelSelectionInfo *info = priv->select_info;
3994 if (info->selection_anchor != info->selection_end)
3997 for (l = info->links; l; l = l->next)
3999 GtkLabelLink *link = l->data;
4000 if (link->start <= info->selection_anchor &&
4001 info->selection_anchor <= link->end)
4009 gtk_label_draw (GtkWidget *widget,
4012 GtkLabel *label = GTK_LABEL (widget);
4013 GtkLabelPrivate *priv = label->priv;
4014 GtkLabelSelectionInfo *info = priv->select_info;
4015 GtkAllocation allocation;
4016 GtkStyleContext *context;
4017 GtkStateFlags state;
4020 gtk_label_ensure_layout (label);
4022 if (priv->text && (*priv->text != '\0'))
4024 get_layout_location (label, &x, &y);
4026 context = gtk_widget_get_style_context (widget);
4027 gtk_widget_get_allocation (widget, &allocation);
4029 cairo_translate (cr, -allocation.x, -allocation.y);
4031 gtk_render_layout (context, cr,
4035 state = gtk_widget_get_state_flags (widget);
4038 (info->selection_anchor != info->selection_end))
4041 cairo_region_t *clip;
4042 GdkRGBA bg_color, fg_color;
4044 range[0] = info->selection_anchor;
4045 range[1] = info->selection_end;
4047 if (range[0] > range[1])
4049 gint tmp = range[0];
4050 range[0] = range[1];
4054 clip = gdk_pango_layout_get_clip_region (priv->layout,
4059 /* FIXME should use gtk_paint, but it can't use a clip region */
4062 gdk_cairo_region (cr, clip);
4065 state = GTK_STATE_FLAG_SELECTED;
4067 if (gtk_widget_has_focus (widget))
4068 state |= GTK_STATE_FLAG_FOCUSED;
4070 gtk_style_context_get_color (context, state, &fg_color);
4071 gtk_style_context_get_background_color (context, state, &bg_color);
4073 gdk_cairo_set_source_rgba (cr, &bg_color);
4076 gdk_cairo_set_source_rgba (cr, &fg_color);
4077 cairo_move_to (cr, x, y);
4078 _gtk_pango_fill_layout (cr, priv->layout);
4081 cairo_region_destroy (clip);
4085 GtkLabelLink *focus_link;
4086 GtkLabelLink *active_link;
4088 cairo_region_t *clip;
4090 GdkColor *text_color;
4091 GdkColor *link_color;
4092 GdkColor *visited_link_color;
4094 if (info->selectable &&
4095 gtk_widget_has_focus (widget) &&
4096 gtk_widget_is_drawable (widget))
4098 PangoDirection cursor_direction;
4100 cursor_direction = get_cursor_direction (label);
4101 gtk_render_insertion_cursor (context, cr,
4103 priv->layout, priv->select_info->selection_end,
4107 focus_link = gtk_label_get_focus_link (label);
4108 active_link = info->active_link;
4114 range[0] = active_link->start;
4115 range[1] = active_link->end;
4119 clip = gdk_pango_layout_get_clip_region (priv->layout,
4123 gdk_cairo_region (cr, clip);
4125 cairo_region_destroy (clip);
4127 gtk_label_get_link_colors (widget, &link_color, &visited_link_color);
4128 if (active_link->visited)
4129 text_color = visited_link_color;
4131 text_color = link_color;
4133 if (info->link_clicked)
4134 state = GTK_STATE_FLAG_ACTIVE;
4136 state = GTK_STATE_FLAG_PRELIGHT;
4138 gtk_style_context_get_background_color (context, state, &bg_color);
4140 gdk_cairo_set_source_rgba (cr, &bg_color);
4143 gdk_cairo_set_source_color (cr, text_color);
4144 cairo_move_to (cr, x, y);
4145 _gtk_pango_fill_layout (cr, priv->layout);
4147 gdk_color_free (link_color);
4148 gdk_color_free (visited_link_color);
4153 if (focus_link && gtk_widget_has_visible_focus (widget))
4155 range[0] = focus_link->start;
4156 range[1] = focus_link->end;
4158 clip = gdk_pango_layout_get_clip_region (priv->layout,
4162 cairo_region_get_extents (clip, &rect);
4164 gtk_render_focus (context, cr,
4166 rect.width, rect.height);
4168 cairo_region_destroy (clip);
4177 separate_uline_pattern (const gchar *str,
4182 gboolean underscore;
4185 gchar *pattern_dest;
4187 *accel_key = GDK_KEY_VoidSymbol;
4188 *new_str = g_new (gchar, strlen (str) + 1);
4189 *pattern = g_new (gchar, g_utf8_strlen (str, -1) + 1);
4195 pattern_dest = *pattern;
4200 const gchar *next_src;
4202 c = g_utf8_get_char (src);
4203 if (c == (gunichar)-1)
4205 g_warning ("Invalid input string");
4211 next_src = g_utf8_next_char (src);
4216 *pattern_dest++ = ' ';
4219 *pattern_dest++ = '_';
4220 if (*accel_key == GDK_KEY_VoidSymbol)
4221 *accel_key = gdk_keyval_to_lower (gdk_unicode_to_keyval (c));
4224 while (src < next_src)
4238 while (src < next_src)
4241 *pattern_dest++ = ' ';
4253 gtk_label_set_uline_text_internal (GtkLabel *label,
4256 GtkLabelPrivate *priv = label->priv;
4257 guint accel_key = GDK_KEY_VoidSymbol;
4261 g_return_if_fail (GTK_IS_LABEL (label));
4262 g_return_if_fail (str != NULL);
4264 /* Split text into the base text and a separate pattern
4267 if (!separate_uline_pattern (str, &accel_key, &new_str, &pattern))
4270 gtk_label_set_text_internal (label, new_str);
4271 gtk_label_set_pattern_internal (label, pattern, TRUE);
4272 priv->mnemonic_keyval = accel_key;
4278 * gtk_label_set_text_with_mnemonic:
4279 * @label: a #GtkLabel
4282 * Sets the label's text from the string @str.
4283 * If characters in @str are preceded by an underscore, they are underlined
4284 * indicating that they represent a keyboard accelerator called a mnemonic.
4285 * The mnemonic key can be used to activate another widget, chosen
4286 * automatically, or explicitly using gtk_label_set_mnemonic_widget().
4289 gtk_label_set_text_with_mnemonic (GtkLabel *label,
4292 g_return_if_fail (GTK_IS_LABEL (label));
4293 g_return_if_fail (str != NULL);
4295 g_object_freeze_notify (G_OBJECT (label));
4297 gtk_label_set_label_internal (label, g_strdup (str ? str : ""));
4298 gtk_label_set_use_markup_internal (label, FALSE);
4299 gtk_label_set_use_underline_internal (label, TRUE);
4301 gtk_label_recalculate (label);
4303 g_object_thaw_notify (G_OBJECT (label));
4307 gtk_label_realize (GtkWidget *widget)
4309 GtkLabel *label = GTK_LABEL (widget);
4310 GtkLabelPrivate *priv = label->priv;
4312 GTK_WIDGET_CLASS (gtk_label_parent_class)->realize (widget);
4314 if (priv->select_info)
4315 gtk_label_create_window (label);
4319 gtk_label_unrealize (GtkWidget *widget)
4321 GtkLabel *label = GTK_LABEL (widget);
4322 GtkLabelPrivate *priv = label->priv;
4324 if (priv->select_info)
4325 gtk_label_destroy_window (label);
4327 GTK_WIDGET_CLASS (gtk_label_parent_class)->unrealize (widget);
4331 gtk_label_map (GtkWidget *widget)
4333 GtkLabel *label = GTK_LABEL (widget);
4334 GtkLabelPrivate *priv = label->priv;
4336 GTK_WIDGET_CLASS (gtk_label_parent_class)->map (widget);
4338 if (priv->select_info)
4339 gdk_window_show (priv->select_info->window);
4343 gtk_label_unmap (GtkWidget *widget)
4345 GtkLabel *label = GTK_LABEL (widget);
4346 GtkLabelPrivate *priv = label->priv;
4348 if (priv->select_info)
4349 gdk_window_hide (priv->select_info->window);
4351 GTK_WIDGET_CLASS (gtk_label_parent_class)->unmap (widget);
4355 window_to_layout_coords (GtkLabel *label,
4359 GtkAllocation allocation;
4363 widget = GTK_WIDGET (label);
4365 /* get layout location in widget->window coords */
4366 get_layout_location (label, &lx, &ly);
4368 gtk_widget_get_allocation (widget, &allocation);
4372 *x += allocation.x; /* go to widget->window */
4373 *x -= lx; /* go to layout */
4378 *y += allocation.y; /* go to widget->window */
4379 *y -= ly; /* go to layout */
4385 layout_to_window_coords (GtkLabel *label,
4392 widget = GTK_WIDGET (label);
4394 /* get layout location in widget->window coords */
4395 get_layout_location (label, &lx, &ly);
4399 *x += lx; /* go to widget->window */
4400 *x -= widget->allocation.x; /* go to selection window */
4405 *y += ly; /* go to widget->window */
4406 *y -= widget->allocation.y; /* go to selection window */
4412 get_layout_index (GtkLabel *label,
4417 GtkLabelPrivate *priv = label->priv;
4419 const gchar *cluster;
4420 const gchar *cluster_end;
4425 gtk_label_ensure_layout (label);
4427 window_to_layout_coords (label, &x, &y);
4432 inside = pango_layout_xy_to_index (priv->layout,
4436 cluster = priv->text + *index;
4437 cluster_end = cluster;
4440 cluster_end = g_utf8_next_char (cluster_end);
4444 *index += (cluster_end - cluster);
4450 gtk_label_select_word (GtkLabel *label)
4452 GtkLabelPrivate *priv = label->priv;
4455 gint start_index = gtk_label_move_backward_word (label, priv->select_info->selection_end);
4456 gint end_index = gtk_label_move_forward_word (label, priv->select_info->selection_end);
4458 min = MIN (priv->select_info->selection_anchor,
4459 priv->select_info->selection_end);
4460 max = MAX (priv->select_info->selection_anchor,
4461 priv->select_info->selection_end);
4463 min = MIN (min, start_index);
4464 max = MAX (max, end_index);
4466 gtk_label_select_region_index (label, min, max);
4470 gtk_label_grab_focus (GtkWidget *widget)
4472 GtkLabel *label = GTK_LABEL (widget);
4473 GtkLabelPrivate *priv = label->priv;
4474 gboolean select_on_focus;
4477 if (priv->select_info == NULL)
4480 GTK_WIDGET_CLASS (gtk_label_parent_class)->grab_focus (widget);
4482 if (priv->select_info->selectable)
4484 g_object_get (gtk_widget_get_settings (widget),
4485 "gtk-label-select-on-focus",
4489 if (select_on_focus && !priv->in_click)
4490 gtk_label_select_region (label, 0, -1);
4494 if (priv->select_info->links && !priv->in_click)
4496 link = priv->select_info->links->data;
4497 priv->select_info->selection_anchor = link->start;
4498 priv->select_info->selection_end = link->start;
4504 gtk_label_focus (GtkWidget *widget,
4505 GtkDirectionType direction)
4507 GtkLabel *label = GTK_LABEL (widget);
4508 GtkLabelPrivate *priv = label->priv;
4509 GtkLabelSelectionInfo *info = priv->select_info;
4510 GtkLabelLink *focus_link;
4513 if (!gtk_widget_is_focus (widget))
4515 gtk_widget_grab_focus (widget);
4518 focus_link = gtk_label_get_focus_link (label);
4519 if (focus_link && direction == GTK_DIR_TAB_BACKWARD)
4521 l = g_list_last (info->links);
4522 focus_link = l->data;
4523 info->selection_anchor = focus_link->start;
4524 info->selection_end = focus_link->start;
4534 if (info->selectable)
4538 if (info->selection_anchor != info->selection_end)
4541 index = info->selection_anchor;
4543 if (direction == GTK_DIR_TAB_FORWARD)
4544 for (l = info->links; l; l = l->next)
4546 GtkLabelLink *link = l->data;
4548 if (link->start > index)
4550 gtk_label_select_region_index (label, link->start, link->start);
4554 else if (direction == GTK_DIR_TAB_BACKWARD)
4555 for (l = g_list_last (info->links); l; l = l->prev)
4557 GtkLabelLink *link = l->data;
4559 if (link->end < index)
4561 gtk_label_select_region_index (label, link->start, link->start);
4570 focus_link = gtk_label_get_focus_link (label);
4573 case GTK_DIR_TAB_FORWARD:
4576 l = g_list_find (info->links, focus_link);
4583 case GTK_DIR_TAB_BACKWARD:
4586 l = g_list_find (info->links, focus_link);
4590 l = g_list_last (info->links);
4599 focus_link = l->data;
4600 info->selection_anchor = focus_link->start;
4601 info->selection_end = focus_link->start;
4602 gtk_widget_queue_draw (widget);
4614 gtk_label_button_press (GtkWidget *widget,
4615 GdkEventButton *event)
4617 GtkLabel *label = GTK_LABEL (widget);
4618 GtkLabelPrivate *priv = label->priv;
4619 GtkLabelSelectionInfo *info = priv->select_info;
4626 if (info->active_link)
4628 if (gdk_event_triggers_context_menu ((GdkEvent *) event))
4630 info->link_clicked = 1;
4631 gtk_label_do_popup (label, event);
4634 else if (event->button == 1)
4636 info->link_clicked = 1;
4637 gtk_widget_queue_draw (widget);
4641 if (!info->selectable)
4644 info->in_drag = FALSE;
4645 info->select_words = FALSE;
4647 if (gdk_event_triggers_context_menu ((GdkEvent *) event))
4649 gtk_label_do_popup (label, event);
4653 else if (event->button == 1)
4655 if (!gtk_widget_has_focus (widget))
4657 priv->in_click = TRUE;
4658 gtk_widget_grab_focus (widget);
4659 priv->in_click = FALSE;
4662 if (event->type == GDK_3BUTTON_PRESS)
4664 gtk_label_select_region_index (label, 0, strlen (priv->text));
4668 if (event->type == GDK_2BUTTON_PRESS)
4670 info->select_words = TRUE;
4671 gtk_label_select_word (label);
4675 get_layout_index (label, event->x, event->y, &index);
4677 min = MIN (info->selection_anchor, info->selection_end);
4678 max = MAX (info->selection_anchor, info->selection_end);
4680 if ((info->selection_anchor != info->selection_end) &&
4681 (event->state & GDK_SHIFT_MASK))
4683 if (index > min && index < max)
4685 /* truncate selection, but keep it as big as possible */
4686 if (index - min > max - index)
4693 /* extend (same as motion) */
4694 min = MIN (min, index);
4695 max = MAX (max, index);
4698 /* ensure the anchor is opposite index */
4706 gtk_label_select_region_index (label, min, max);
4710 if (event->type == GDK_3BUTTON_PRESS)
4711 gtk_label_select_region_index (label, 0, strlen (priv->text));
4712 else if (event->type == GDK_2BUTTON_PRESS)
4713 gtk_label_select_word (label);
4714 else if (min < max && min <= index && index <= max)
4716 info->in_drag = TRUE;
4717 info->drag_start_x = event->x;
4718 info->drag_start_y = event->y;
4721 /* start a replacement */
4722 gtk_label_select_region_index (label, index, index);
4732 gtk_label_button_release (GtkWidget *widget,
4733 GdkEventButton *event)
4736 GtkLabel *label = GTK_LABEL (widget);
4737 GtkLabelPrivate *priv = label->priv;
4738 GtkLabelSelectionInfo *info = priv->select_info;
4748 get_layout_index (label, event->x, event->y, &index);
4749 gtk_label_select_region_index (label, index, index);
4754 if (event->button != 1)
4757 if (info->active_link &&
4758 info->selection_anchor == info->selection_end &&
4761 emit_activate_link (label, info->active_link);
4762 info->link_clicked = 0;
4767 /* The goal here is to return TRUE iff we ate the
4768 * button press to start selecting.
4774 connect_mnemonics_visible_notify (GtkLabel *label)
4776 GtkLabelPrivate *priv = label->priv;
4777 GtkWidget *toplevel;
4780 toplevel = gtk_widget_get_toplevel (GTK_WIDGET (label));
4782 if (!GTK_IS_WINDOW (toplevel))
4785 /* always set up this widgets initial value */
4786 priv->mnemonics_visible =
4787 gtk_window_get_mnemonics_visible (GTK_WINDOW (toplevel));
4790 GPOINTER_TO_INT (g_object_get_data (G_OBJECT (toplevel),
4791 "gtk-label-mnemonics-visible-connected"));
4795 g_signal_connect (toplevel,
4796 "notify::mnemonics-visible",
4797 G_CALLBACK (label_mnemonics_visible_changed),
4799 g_object_set_data (G_OBJECT (toplevel),
4800 "gtk-label-mnemonics-visible-connected",
4801 GINT_TO_POINTER (1));
4806 drag_begin_cb (GtkWidget *widget,
4807 GdkDragContext *context,
4810 GtkLabel *label = GTK_LABEL (widget);
4811 GtkLabelPrivate *priv = label->priv;
4812 cairo_surface_t *surface = NULL;
4814 g_signal_handlers_disconnect_by_func (widget, drag_begin_cb, NULL);
4816 if ((priv->select_info->selection_anchor !=
4817 priv->select_info->selection_end) &&
4823 start = MIN (priv->select_info->selection_anchor,
4824 priv->select_info->selection_end);
4825 end = MAX (priv->select_info->selection_anchor,
4826 priv->select_info->selection_end);
4828 len = strlen (priv->text);
4836 surface = _gtk_text_util_create_drag_icon (widget,
4843 gtk_drag_set_icon_surface (context, surface);
4844 cairo_surface_destroy (surface);
4848 gtk_drag_set_icon_default (context);
4853 gtk_label_motion (GtkWidget *widget,
4854 GdkEventMotion *event)
4856 GtkLabel *label = GTK_LABEL (widget);
4857 GtkLabelPrivate *priv = label->priv;
4858 GtkLabelSelectionInfo *info = priv->select_info;
4864 if (info->links && !info->in_drag)
4868 gboolean found = FALSE;
4870 if (info->selection_anchor == info->selection_end)
4872 if (get_layout_index (label, event->x, event->y, &index))
4874 for (l = info->links; l != NULL; l = l->next)
4877 if (index >= link->start && index <= link->end)
4888 if (info->active_link != link)
4890 info->link_clicked = 0;
4891 info->active_link = link;
4892 gtk_label_update_cursor (label);
4893 gtk_widget_queue_draw (widget);
4898 if (info->active_link != NULL)
4900 info->link_clicked = 0;
4901 info->active_link = NULL;
4902 gtk_label_update_cursor (label);
4903 gtk_widget_queue_draw (widget);
4908 if (!info->selectable)
4911 if ((event->state & GDK_BUTTON1_MASK) == 0)
4916 if (gtk_drag_check_threshold (widget,
4919 event->x, event->y))
4921 GtkTargetList *target_list = gtk_target_list_new (NULL, 0);
4923 gtk_target_list_add_text_targets (target_list, 0);
4925 g_signal_connect (widget, "drag-begin",
4926 G_CALLBACK (drag_begin_cb), NULL);
4927 gtk_drag_begin (widget, target_list,
4929 1, (GdkEvent *)event);
4931 info->in_drag = FALSE;
4933 gtk_target_list_unref (target_list);
4940 gdk_window_get_device_position (info->window, event->device, &x, &y, NULL);
4941 get_layout_index (label, x, y, &index);
4943 if (info->select_words)
4946 gint old_min, old_max;
4949 min = gtk_label_move_backward_word (label, index);
4950 max = gtk_label_move_forward_word (label, index);
4952 anchor = info->selection_anchor;
4953 end = info->selection_end;
4955 old_min = MIN (anchor, end);
4956 old_max = MAX (anchor, end);
4963 else if (old_max < max)
4968 else if (anchor == old_min)
4979 gtk_label_select_region_index (label, anchor, end);
4982 gtk_label_select_region_index (label, info->selection_anchor, index);
4989 gtk_label_leave_notify (GtkWidget *widget,
4990 GdkEventCrossing *event)
4992 GtkLabel *label = GTK_LABEL (widget);
4993 GtkLabelPrivate *priv = label->priv;
4995 if (priv->select_info)
4997 priv->select_info->active_link = NULL;
4998 gtk_label_update_cursor (label);
4999 gtk_widget_queue_draw (widget);
5002 if (GTK_WIDGET_CLASS (gtk_label_parent_class)->leave_notify_event)
5003 return GTK_WIDGET_CLASS (gtk_label_parent_class)->leave_notify_event (widget, event);
5009 gtk_label_create_window (GtkLabel *label)
5011 GtkLabelPrivate *priv = label->priv;
5012 GtkAllocation allocation;
5014 GdkWindowAttr attributes;
5015 gint attributes_mask;
5017 g_assert (priv->select_info);
5018 widget = GTK_WIDGET (label);
5019 g_assert (gtk_widget_get_realized (widget));
5021 if (priv->select_info->window)
5024 gtk_widget_get_allocation (widget, &allocation);
5026 attributes.x = allocation.x;
5027 attributes.y = allocation.y;
5028 attributes.width = allocation.width;
5029 attributes.height = allocation.height;
5030 attributes.window_type = GDK_WINDOW_CHILD;
5031 attributes.wclass = GDK_INPUT_ONLY;
5032 attributes.override_redirect = TRUE;
5033 attributes.event_mask = gtk_widget_get_events (widget) |
5034 GDK_BUTTON_PRESS_MASK |
5035 GDK_BUTTON_RELEASE_MASK |
5036 GDK_LEAVE_NOTIFY_MASK |
5037 GDK_BUTTON_MOTION_MASK |
5038 GDK_POINTER_MOTION_MASK |
5039 GDK_POINTER_MOTION_HINT_MASK;
5040 attributes_mask = GDK_WA_X | GDK_WA_Y | GDK_WA_NOREDIR;
5041 if (gtk_widget_is_sensitive (widget))
5043 attributes.cursor = gdk_cursor_new_for_display (gtk_widget_get_display (widget),
5045 attributes_mask |= GDK_WA_CURSOR;
5049 priv->select_info->window = gdk_window_new (gtk_widget_get_window (widget),
5050 &attributes, attributes_mask);
5051 gdk_window_set_user_data (priv->select_info->window, widget);
5053 if (attributes_mask & GDK_WA_CURSOR)
5054 g_object_unref (attributes.cursor);
5058 gtk_label_destroy_window (GtkLabel *label)
5060 GtkLabelPrivate *priv = label->priv;
5062 g_assert (priv->select_info);
5064 if (priv->select_info->window == NULL)
5067 gdk_window_set_user_data (priv->select_info->window, NULL);
5068 gdk_window_destroy (priv->select_info->window);
5069 priv->select_info->window = NULL;
5073 gtk_label_ensure_select_info (GtkLabel *label)
5075 GtkLabelPrivate *priv = label->priv;
5077 if (priv->select_info == NULL)
5079 priv->select_info = g_new0 (GtkLabelSelectionInfo, 1);
5081 gtk_widget_set_can_focus (GTK_WIDGET (label), TRUE);
5083 if (gtk_widget_get_realized (GTK_WIDGET (label)))
5084 gtk_label_create_window (label);
5086 if (gtk_widget_get_mapped (GTK_WIDGET (label)))
5087 gdk_window_show (priv->select_info->window);
5092 gtk_label_clear_select_info (GtkLabel *label)
5094 GtkLabelPrivate *priv = label->priv;
5096 if (priv->select_info == NULL)
5099 if (!priv->select_info->selectable && !priv->select_info->links)
5101 gtk_label_destroy_window (label);
5103 g_free (priv->select_info);
5104 priv->select_info = NULL;
5106 gtk_widget_set_can_focus (GTK_WIDGET (label), FALSE);
5111 * gtk_label_set_selectable:
5112 * @label: a #GtkLabel
5113 * @setting: %TRUE to allow selecting text in the label
5115 * Selectable labels allow the user to select text from the label, for
5119 gtk_label_set_selectable (GtkLabel *label,
5122 GtkLabelPrivate *priv;
5123 gboolean old_setting;
5125 g_return_if_fail (GTK_IS_LABEL (label));
5129 setting = setting != FALSE;
5130 old_setting = priv->select_info && priv->select_info->selectable;
5134 gtk_label_ensure_select_info (label);
5135 priv->select_info->selectable = TRUE;
5136 gtk_label_update_cursor (label);
5142 /* unselect, to give up the selection */
5143 gtk_label_select_region (label, 0, 0);
5145 priv->select_info->selectable = FALSE;
5146 gtk_label_clear_select_info (label);
5147 gtk_label_update_cursor (label);
5150 if (setting != old_setting)
5152 g_object_freeze_notify (G_OBJECT (label));
5153 g_object_notify (G_OBJECT (label), "selectable");
5154 g_object_notify (G_OBJECT (label), "cursor-position");
5155 g_object_notify (G_OBJECT (label), "selection-bound");
5156 g_object_thaw_notify (G_OBJECT (label));
5157 gtk_widget_queue_draw (GTK_WIDGET (label));
5162 * gtk_label_get_selectable:
5163 * @label: a #GtkLabel
5165 * Gets the value set by gtk_label_set_selectable().
5167 * Return value: %TRUE if the user can copy text from the label
5170 gtk_label_get_selectable (GtkLabel *label)
5172 GtkLabelPrivate *priv;
5174 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
5178 return priv->select_info && priv->select_info->selectable;
5182 * gtk_label_set_angle:
5183 * @label: a #GtkLabel
5184 * @angle: the angle that the baseline of the label makes with
5185 * the horizontal, in degrees, measured counterclockwise
5187 * Sets the angle of rotation for the label. An angle of 90 reads from
5188 * from bottom to top, an angle of 270, from top to bottom. The angle
5189 * setting for the label is ignored if the label is selectable,
5190 * wrapped, or ellipsized.
5195 gtk_label_set_angle (GtkLabel *label,
5198 GtkLabelPrivate *priv;
5200 g_return_if_fail (GTK_IS_LABEL (label));
5204 /* Canonicalize to [0,360]. We don't canonicalize 360 to 0, because
5205 * double property ranges are inclusive, and changing 360 to 0 would
5206 * make a property editor behave strangely.
5208 if (angle < 0 || angle > 360.0)
5209 angle = angle - 360. * floor (angle / 360.);
5211 if (priv->angle != angle)
5213 priv->angle = angle;
5215 gtk_label_clear_layout (label);
5216 gtk_widget_queue_resize (GTK_WIDGET (label));
5218 g_object_notify (G_OBJECT (label), "angle");
5223 * gtk_label_get_angle:
5224 * @label: a #GtkLabel
5226 * Gets the angle of rotation for the label. See
5227 * gtk_label_set_angle().
5229 * Return value: the angle of rotation for the label
5234 gtk_label_get_angle (GtkLabel *label)
5236 g_return_val_if_fail (GTK_IS_LABEL (label), 0.0);
5238 return label->priv->angle;
5242 gtk_label_set_selection_text (GtkLabel *label,
5243 GtkSelectionData *selection_data)
5245 GtkLabelPrivate *priv = label->priv;
5247 if (priv->select_info &&
5248 (priv->select_info->selection_anchor !=
5249 priv->select_info->selection_end) &&
5255 start = MIN (priv->select_info->selection_anchor,
5256 priv->select_info->selection_end);
5257 end = MAX (priv->select_info->selection_anchor,
5258 priv->select_info->selection_end);
5260 len = strlen (priv->text);
5268 gtk_selection_data_set_text (selection_data,
5275 gtk_label_drag_data_get (GtkWidget *widget,
5276 GdkDragContext *context,
5277 GtkSelectionData *selection_data,
5281 gtk_label_set_selection_text (GTK_LABEL (widget), selection_data);
5285 get_text_callback (GtkClipboard *clipboard,
5286 GtkSelectionData *selection_data,
5288 gpointer user_data_or_owner)
5290 gtk_label_set_selection_text (GTK_LABEL (user_data_or_owner), selection_data);
5294 clear_text_callback (GtkClipboard *clipboard,
5295 gpointer user_data_or_owner)
5298 GtkLabelPrivate *priv;
5300 label = GTK_LABEL (user_data_or_owner);
5303 if (priv->select_info)
5305 priv->select_info->selection_anchor = priv->select_info->selection_end;
5307 gtk_widget_queue_draw (GTK_WIDGET (label));
5312 gtk_label_select_region_index (GtkLabel *label,
5316 GtkLabelPrivate *priv;
5318 g_return_if_fail (GTK_IS_LABEL (label));
5322 if (priv->select_info && priv->select_info->selectable)
5324 GtkClipboard *clipboard;
5326 if (priv->select_info->selection_anchor == anchor_index &&
5327 priv->select_info->selection_end == end_index)
5330 g_object_freeze_notify (G_OBJECT (label));
5332 if (priv->select_info->selection_anchor != anchor_index)
5333 g_object_notify (G_OBJECT (label), "selection-bound");
5334 if (priv->select_info->selection_end != end_index)
5335 g_object_notify (G_OBJECT (label), "cursor-position");
5337 priv->select_info->selection_anchor = anchor_index;
5338 priv->select_info->selection_end = end_index;
5340 if (gtk_widget_has_screen (GTK_WIDGET (label)))
5341 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (label),
5342 GDK_SELECTION_PRIMARY);
5346 if (anchor_index != end_index)
5348 GtkTargetList *list;
5349 GtkTargetEntry *targets;
5352 list = gtk_target_list_new (NULL, 0);
5353 gtk_target_list_add_text_targets (list, 0);
5354 targets = gtk_target_table_new_from_list (list, &n_targets);
5357 gtk_clipboard_set_with_owner (clipboard,
5360 clear_text_callback,
5363 gtk_target_table_free (targets, n_targets);
5364 gtk_target_list_unref (list);
5369 gtk_clipboard_get_owner (clipboard) == G_OBJECT (label))
5370 gtk_clipboard_clear (clipboard);
5373 gtk_widget_queue_draw (GTK_WIDGET (label));
5375 g_object_thaw_notify (G_OBJECT (label));
5380 * gtk_label_select_region:
5381 * @label: a #GtkLabel
5382 * @start_offset: start offset (in characters not bytes)
5383 * @end_offset: end offset (in characters not bytes)
5385 * Selects a range of characters in the label, if the label is selectable.
5386 * See gtk_label_set_selectable(). If the label is not selectable,
5387 * this function has no effect. If @start_offset or
5388 * @end_offset are -1, then the end of the label will be substituted.
5391 gtk_label_select_region (GtkLabel *label,
5395 GtkLabelPrivate *priv;
5397 g_return_if_fail (GTK_IS_LABEL (label));
5401 if (priv->text && priv->select_info)
5403 if (start_offset < 0)
5404 start_offset = g_utf8_strlen (priv->text, -1);
5407 end_offset = g_utf8_strlen (priv->text, -1);
5409 gtk_label_select_region_index (label,
5410 g_utf8_offset_to_pointer (priv->text, start_offset) - priv->text,
5411 g_utf8_offset_to_pointer (priv->text, end_offset) - priv->text);
5416 * gtk_label_get_selection_bounds:
5417 * @label: a #GtkLabel
5418 * @start: (out): return location for start of selection, as a character offset
5419 * @end: (out): return location for end of selection, as a character offset
5421 * Gets the selected range of characters in the label, returning %TRUE
5422 * if there's a selection.
5424 * Return value: %TRUE if selection is non-empty
5427 gtk_label_get_selection_bounds (GtkLabel *label,
5431 GtkLabelPrivate *priv;
5433 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
5437 if (priv->select_info == NULL)
5439 /* not a selectable label */
5449 gint start_index, end_index;
5450 gint start_offset, end_offset;
5453 start_index = MIN (priv->select_info->selection_anchor,
5454 priv->select_info->selection_end);
5455 end_index = MAX (priv->select_info->selection_anchor,
5456 priv->select_info->selection_end);
5458 len = strlen (priv->text);
5460 if (end_index > len)
5463 if (start_index > len)
5466 start_offset = g_utf8_strlen (priv->text, start_index);
5467 end_offset = g_utf8_strlen (priv->text, end_index);
5469 if (start_offset > end_offset)
5471 gint tmp = start_offset;
5472 start_offset = end_offset;
5477 *start = start_offset;
5482 return start_offset != end_offset;
5488 * gtk_label_get_layout:
5489 * @label: a #GtkLabel
5491 * Gets the #PangoLayout used to display the label.
5492 * The layout is useful to e.g. convert text positions to
5493 * pixel positions, in combination with gtk_label_get_layout_offsets().
5494 * The returned layout is owned by the @label so need not be
5495 * freed by the caller. The @label is free to recreate its layout at
5496 * any time, so it should be considered read-only.
5498 * Return value: (transfer none): the #PangoLayout for this label
5501 gtk_label_get_layout (GtkLabel *label)
5503 GtkLabelPrivate *priv;
5505 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
5509 gtk_label_ensure_layout (label);
5511 return priv->layout;
5515 * gtk_label_get_layout_offsets:
5516 * @label: a #GtkLabel
5517 * @x: (out) (allow-none): location to store X offset of layout, or %NULL
5518 * @y: (out) (allow-none): location to store Y offset of layout, or %NULL
5520 * Obtains the coordinates where the label will draw the #PangoLayout
5521 * representing the text in the label; useful to convert mouse events
5522 * into coordinates inside the #PangoLayout, e.g. to take some action
5523 * if some part of the label is clicked. Of course you will need to
5524 * create a #GtkEventBox to receive the events, and pack the label
5525 * inside it, since labels are a #GTK_NO_WINDOW widget. Remember
5526 * when using the #PangoLayout functions you need to convert to
5527 * and from pixels using PANGO_PIXELS() or #PANGO_SCALE.
5530 gtk_label_get_layout_offsets (GtkLabel *label,
5534 g_return_if_fail (GTK_IS_LABEL (label));
5536 gtk_label_ensure_layout (label);
5538 get_layout_location (label, x, y);
5542 * gtk_label_set_use_markup:
5543 * @label: a #GtkLabel
5544 * @setting: %TRUE if the label's text should be parsed for markup.
5546 * Sets whether the text of the label contains markup in <link
5547 * linkend="PangoMarkupFormat">Pango's text markup
5548 * language</link>. See gtk_label_set_markup().
5551 gtk_label_set_use_markup (GtkLabel *label,
5554 g_return_if_fail (GTK_IS_LABEL (label));
5556 g_object_freeze_notify (G_OBJECT (label));
5558 gtk_label_set_use_markup_internal (label, setting);
5559 gtk_label_recalculate (label);
5561 g_object_thaw_notify (G_OBJECT (label));
5565 * gtk_label_get_use_markup:
5566 * @label: a #GtkLabel
5568 * Returns whether the label's text is interpreted as marked up with
5569 * the <link linkend="PangoMarkupFormat">Pango text markup
5570 * language</link>. See gtk_label_set_use_markup ().
5572 * Return value: %TRUE if the label's text will be parsed for markup.
5575 gtk_label_get_use_markup (GtkLabel *label)
5577 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
5579 return label->priv->use_markup;
5583 * gtk_label_set_use_underline:
5584 * @label: a #GtkLabel
5585 * @setting: %TRUE if underlines in the text indicate mnemonics
5587 * If true, an underline in the text indicates the next character should be
5588 * used for the mnemonic accelerator key.
5591 gtk_label_set_use_underline (GtkLabel *label,
5594 g_return_if_fail (GTK_IS_LABEL (label));
5596 g_object_freeze_notify (G_OBJECT (label));
5598 gtk_label_set_use_underline_internal (label, setting);
5599 gtk_label_recalculate (label);
5601 g_object_thaw_notify (G_OBJECT (label));
5605 * gtk_label_get_use_underline:
5606 * @label: a #GtkLabel
5608 * Returns whether an embedded underline in the label indicates a
5609 * mnemonic. See gtk_label_set_use_underline().
5611 * Return value: %TRUE whether an embedded underline in the label indicates
5612 * the mnemonic accelerator keys.
5615 gtk_label_get_use_underline (GtkLabel *label)
5617 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
5619 return label->priv->use_underline;
5623 * gtk_label_set_single_line_mode:
5624 * @label: a #GtkLabel
5625 * @single_line_mode: %TRUE if the label should be in single line mode
5627 * Sets whether the label is in single line mode.
5632 gtk_label_set_single_line_mode (GtkLabel *label,
5633 gboolean single_line_mode)
5635 GtkLabelPrivate *priv;
5637 g_return_if_fail (GTK_IS_LABEL (label));
5641 single_line_mode = single_line_mode != FALSE;
5643 if (priv->single_line_mode != single_line_mode)
5645 priv->single_line_mode = single_line_mode;
5647 gtk_label_clear_layout (label);
5648 gtk_widget_queue_resize (GTK_WIDGET (label));
5650 g_object_notify (G_OBJECT (label), "single-line-mode");
5655 * gtk_label_get_single_line_mode:
5656 * @label: a #GtkLabel
5658 * Returns whether the label is in single line mode.
5660 * Return value: %TRUE when the label is in single line mode.
5665 gtk_label_get_single_line_mode (GtkLabel *label)
5667 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
5669 return label->priv->single_line_mode;
5672 /* Compute the X position for an offset that corresponds to the "more important
5673 * cursor position for that offset. We use this when trying to guess to which
5674 * end of the selection we should go to when the user hits the left or
5678 get_better_cursor (GtkLabel *label,
5683 GtkLabelPrivate *priv = label->priv;
5684 GdkKeymap *keymap = gdk_keymap_get_for_display (gtk_widget_get_display (GTK_WIDGET (label)));
5685 PangoDirection keymap_direction = gdk_keymap_get_direction (keymap);
5686 PangoDirection cursor_direction = get_cursor_direction (label);
5687 gboolean split_cursor;
5688 PangoRectangle strong_pos, weak_pos;
5690 g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
5691 "gtk-split-cursor", &split_cursor,
5694 gtk_label_ensure_layout (label);
5696 pango_layout_get_cursor_pos (priv->layout, index,
5697 &strong_pos, &weak_pos);
5701 *x = strong_pos.x / PANGO_SCALE;
5702 *y = strong_pos.y / PANGO_SCALE;
5706 if (keymap_direction == cursor_direction)
5708 *x = strong_pos.x / PANGO_SCALE;
5709 *y = strong_pos.y / PANGO_SCALE;
5713 *x = weak_pos.x / PANGO_SCALE;
5714 *y = weak_pos.y / PANGO_SCALE;
5721 gtk_label_move_logically (GtkLabel *label,
5725 GtkLabelPrivate *priv = label->priv;
5726 gint offset = g_utf8_pointer_to_offset (priv->text,
5727 priv->text + start);
5731 PangoLogAttr *log_attrs;
5735 gtk_label_ensure_layout (label);
5737 length = g_utf8_strlen (priv->text, -1);
5739 pango_layout_get_log_attrs (priv->layout, &log_attrs, &n_attrs);
5741 while (count > 0 && offset < length)
5745 while (offset < length && !log_attrs[offset].is_cursor_position);
5749 while (count < 0 && offset > 0)
5753 while (offset > 0 && !log_attrs[offset].is_cursor_position);
5761 return g_utf8_offset_to_pointer (priv->text, offset) - priv->text;
5765 gtk_label_move_visually (GtkLabel *label,
5769 GtkLabelPrivate *priv = label->priv;
5776 int new_index, new_trailing;
5777 gboolean split_cursor;
5780 gtk_label_ensure_layout (label);
5782 g_object_get (gtk_widget_get_settings (GTK_WIDGET (label)),
5783 "gtk-split-cursor", &split_cursor,
5790 GdkKeymap *keymap = gdk_keymap_get_for_display (gtk_widget_get_display (GTK_WIDGET (label)));
5791 PangoDirection keymap_direction = gdk_keymap_get_direction (keymap);
5793 strong = keymap_direction == get_cursor_direction (label);
5798 pango_layout_move_cursor_visually (priv->layout, strong, index, 0, 1, &new_index, &new_trailing);
5803 pango_layout_move_cursor_visually (priv->layout, strong, index, 0, -1, &new_index, &new_trailing);
5807 if (new_index < 0 || new_index == G_MAXINT)
5812 while (new_trailing--)
5813 index = g_utf8_next_char (priv->text + new_index) - priv->text;
5820 gtk_label_move_forward_word (GtkLabel *label,
5823 GtkLabelPrivate *priv = label->priv;
5824 gint new_pos = g_utf8_pointer_to_offset (priv->text,
5825 priv->text + start);
5828 length = g_utf8_strlen (priv->text, -1);
5829 if (new_pos < length)
5831 PangoLogAttr *log_attrs;
5834 gtk_label_ensure_layout (label);
5836 pango_layout_get_log_attrs (priv->layout, &log_attrs, &n_attrs);
5838 /* Find the next word end */
5840 while (new_pos < n_attrs && !log_attrs[new_pos].is_word_end)
5846 return g_utf8_offset_to_pointer (priv->text, new_pos) - priv->text;
5851 gtk_label_move_backward_word (GtkLabel *label,
5854 GtkLabelPrivate *priv = label->priv;
5855 gint new_pos = g_utf8_pointer_to_offset (priv->text,
5856 priv->text + start);
5860 PangoLogAttr *log_attrs;
5863 gtk_label_ensure_layout (label);
5865 pango_layout_get_log_attrs (priv->layout, &log_attrs, &n_attrs);
5869 /* Find the previous word beginning */
5870 while (new_pos > 0 && !log_attrs[new_pos].is_word_start)
5876 return g_utf8_offset_to_pointer (priv->text, new_pos) - priv->text;
5880 gtk_label_move_cursor (GtkLabel *label,
5881 GtkMovementStep step,
5883 gboolean extend_selection)
5885 GtkLabelPrivate *priv = label->priv;
5889 if (priv->select_info == NULL)
5892 old_pos = new_pos = priv->select_info->selection_end;
5894 if (priv->select_info->selection_end != priv->select_info->selection_anchor &&
5897 /* If we have a current selection and aren't extending it, move to the
5898 * start/or end of the selection as appropriate
5902 case GTK_MOVEMENT_VISUAL_POSITIONS:
5905 gint anchor_x, anchor_y;
5906 gboolean end_is_left;
5908 get_better_cursor (label, priv->select_info->selection_end, &end_x, &end_y);
5909 get_better_cursor (label, priv->select_info->selection_anchor, &anchor_x, &anchor_y);
5911 end_is_left = (end_y < anchor_y) || (end_y == anchor_y && end_x < anchor_x);
5914 new_pos = end_is_left ? priv->select_info->selection_end : priv->select_info->selection_anchor;
5916 new_pos = !end_is_left ? priv->select_info->selection_end : priv->select_info->selection_anchor;
5919 case GTK_MOVEMENT_LOGICAL_POSITIONS:
5920 case GTK_MOVEMENT_WORDS:
5922 new_pos = MIN (priv->select_info->selection_end, priv->select_info->selection_anchor);
5924 new_pos = MAX (priv->select_info->selection_end, priv->select_info->selection_anchor);
5926 case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
5927 case GTK_MOVEMENT_PARAGRAPH_ENDS:
5928 case GTK_MOVEMENT_BUFFER_ENDS:
5929 /* FIXME: Can do better here */
5930 new_pos = count < 0 ? 0 : strlen (priv->text);
5932 case GTK_MOVEMENT_DISPLAY_LINES:
5933 case GTK_MOVEMENT_PARAGRAPHS:
5934 case GTK_MOVEMENT_PAGES:
5935 case GTK_MOVEMENT_HORIZONTAL_PAGES:
5943 case GTK_MOVEMENT_LOGICAL_POSITIONS:
5944 new_pos = gtk_label_move_logically (label, new_pos, count);
5946 case GTK_MOVEMENT_VISUAL_POSITIONS:
5947 new_pos = gtk_label_move_visually (label, new_pos, count);
5948 if (new_pos == old_pos)
5950 if (!extend_selection)
5952 if (!gtk_widget_keynav_failed (GTK_WIDGET (label),
5954 GTK_DIR_RIGHT : GTK_DIR_LEFT))
5956 GtkWidget *toplevel = gtk_widget_get_toplevel (GTK_WIDGET (label));
5959 gtk_widget_child_focus (toplevel,
5961 GTK_DIR_RIGHT : GTK_DIR_LEFT);
5966 gtk_widget_error_bell (GTK_WIDGET (label));
5970 case GTK_MOVEMENT_WORDS:
5973 new_pos = gtk_label_move_forward_word (label, new_pos);
5978 new_pos = gtk_label_move_backward_word (label, new_pos);
5981 if (new_pos == old_pos)
5982 gtk_widget_error_bell (GTK_WIDGET (label));
5984 case GTK_MOVEMENT_DISPLAY_LINE_ENDS:
5985 case GTK_MOVEMENT_PARAGRAPH_ENDS:
5986 case GTK_MOVEMENT_BUFFER_ENDS:
5987 /* FIXME: Can do better here */
5988 new_pos = count < 0 ? 0 : strlen (priv->text);
5989 if (new_pos == old_pos)
5990 gtk_widget_error_bell (GTK_WIDGET (label));
5992 case GTK_MOVEMENT_DISPLAY_LINES:
5993 case GTK_MOVEMENT_PARAGRAPHS:
5994 case GTK_MOVEMENT_PAGES:
5995 case GTK_MOVEMENT_HORIZONTAL_PAGES:
6000 if (extend_selection)
6001 gtk_label_select_region_index (label,
6002 priv->select_info->selection_anchor,
6005 gtk_label_select_region_index (label, new_pos, new_pos);
6009 gtk_label_copy_clipboard (GtkLabel *label)
6011 GtkLabelPrivate *priv = label->priv;
6013 if (priv->text && priv->select_info)
6017 GtkClipboard *clipboard;
6019 start = MIN (priv->select_info->selection_anchor,
6020 priv->select_info->selection_end);
6021 end = MAX (priv->select_info->selection_anchor,
6022 priv->select_info->selection_end);
6024 len = strlen (priv->text);
6032 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (label), GDK_SELECTION_CLIPBOARD);
6035 gtk_clipboard_set_text (clipboard, priv->text + start, end - start);
6040 link = gtk_label_get_focus_link (label);
6042 gtk_clipboard_set_text (clipboard, link->uri, -1);
6048 gtk_label_select_all (GtkLabel *label)
6050 GtkLabelPrivate *priv = label->priv;
6052 gtk_label_select_region_index (label, 0, strlen (priv->text));
6055 /* Quick hack of a popup menu
6058 activate_cb (GtkWidget *menuitem,
6061 const gchar *signal = g_object_get_data (G_OBJECT (menuitem), "gtk-signal");
6062 g_signal_emit_by_name (label, signal);
6066 append_action_signal (GtkLabel *label,
6068 const gchar *stock_id,
6069 const gchar *signal,
6072 GtkWidget *menuitem = gtk_image_menu_item_new_from_stock (stock_id, NULL);
6074 g_object_set_data (G_OBJECT (menuitem), I_("gtk-signal"), (char *)signal);
6075 g_signal_connect (menuitem, "activate",
6076 G_CALLBACK (activate_cb), label);
6078 gtk_widget_set_sensitive (menuitem, sensitive);
6080 gtk_widget_show (menuitem);
6081 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6085 popup_menu_detach (GtkWidget *attach_widget,
6088 GtkLabel *label = GTK_LABEL (attach_widget);
6089 GtkLabelPrivate *priv = label->priv;
6091 if (priv->select_info)
6092 priv->select_info->popup_menu = NULL;
6096 popup_position_func (GtkMenu *menu,
6104 GtkAllocation allocation;
6108 label = GTK_LABEL (user_data);
6109 widget = GTK_WIDGET (label);
6111 g_return_if_fail (gtk_widget_get_realized (widget));
6113 screen = gtk_widget_get_screen (widget);
6114 gdk_window_get_origin (gtk_widget_get_window (widget), x, y);
6116 gtk_widget_get_allocation (widget, &allocation);
6121 gtk_widget_get_preferred_size (GTK_WIDGET (menu),
6124 gtk_widget_get_allocation (widget, &allocation);
6126 *x += allocation.width / 2;
6127 *y += allocation.height;
6129 *x = CLAMP (*x, 0, MAX (0, gdk_screen_get_width (screen) - req.width));
6130 *y = CLAMP (*y, 0, MAX (0, gdk_screen_get_height (screen) - req.height));
6134 open_link_activate_cb (GtkMenuItem *menu_item,
6139 link = gtk_label_get_current_link (label);
6142 emit_activate_link (label, link);
6146 copy_link_activate_cb (GtkMenuItem *menu_item,
6149 GtkClipboard *clipboard;
6152 uri = gtk_label_get_current_uri (label);
6155 clipboard = gtk_widget_get_clipboard (GTK_WIDGET (label), GDK_SELECTION_CLIPBOARD);
6156 gtk_clipboard_set_text (clipboard, uri, -1);
6161 gtk_label_popup_menu (GtkWidget *widget)
6163 gtk_label_do_popup (GTK_LABEL (widget), NULL);
6169 gtk_label_do_popup (GtkLabel *label,
6170 GdkEventButton *event)
6172 GtkLabelPrivate *priv = label->priv;
6173 GtkWidget *menuitem;
6176 gboolean have_selection;
6179 if (!priv->select_info)
6182 if (priv->select_info->popup_menu)
6183 gtk_widget_destroy (priv->select_info->popup_menu);
6185 priv->select_info->popup_menu = menu = gtk_menu_new ();
6187 gtk_menu_attach_to_widget (GTK_MENU (menu), GTK_WIDGET (label), popup_menu_detach);
6190 priv->select_info->selection_anchor != priv->select_info->selection_end;
6194 if (priv->select_info->link_clicked)
6195 link = priv->select_info->active_link;
6200 link = gtk_label_get_focus_link (label);
6202 if (!have_selection && link)
6205 menuitem = gtk_image_menu_item_new_with_mnemonic (_("_Open Link"));
6206 gtk_widget_show (menuitem);
6207 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6209 g_signal_connect (G_OBJECT (menuitem), "activate",
6210 G_CALLBACK (open_link_activate_cb), label);
6212 image = gtk_image_new_from_stock (GTK_STOCK_JUMP_TO, GTK_ICON_SIZE_MENU);
6213 gtk_widget_show (image);
6214 gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (menuitem), image);
6216 /* Copy Link Address */
6217 menuitem = gtk_image_menu_item_new_with_mnemonic (_("Copy _Link Address"));
6218 gtk_widget_show (menuitem);
6219 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6221 g_signal_connect (G_OBJECT (menuitem), "activate",
6222 G_CALLBACK (copy_link_activate_cb), label);
6224 image = gtk_image_new_from_stock (GTK_STOCK_COPY, GTK_ICON_SIZE_MENU);
6225 gtk_widget_show (image);
6226 gtk_image_menu_item_set_image (GTK_IMAGE_MENU_ITEM (menuitem), image);
6230 append_action_signal (label, menu, GTK_STOCK_CUT, "cut-clipboard", FALSE);
6231 append_action_signal (label, menu, GTK_STOCK_COPY, "copy-clipboard", have_selection);
6232 append_action_signal (label, menu, GTK_STOCK_PASTE, "paste-clipboard", FALSE);
6234 menuitem = gtk_image_menu_item_new_from_stock (GTK_STOCK_DELETE, NULL);
6235 gtk_widget_set_sensitive (menuitem, FALSE);
6236 gtk_widget_show (menuitem);
6237 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6239 menuitem = gtk_separator_menu_item_new ();
6240 gtk_widget_show (menuitem);
6241 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6243 menuitem = gtk_image_menu_item_new_from_stock (GTK_STOCK_SELECT_ALL, NULL);
6244 g_signal_connect_swapped (menuitem, "activate",
6245 G_CALLBACK (gtk_label_select_all), label);
6246 gtk_widget_show (menuitem);
6247 gtk_menu_shell_append (GTK_MENU_SHELL (menu), menuitem);
6250 g_signal_emit (label, signals[POPULATE_POPUP], 0, menu);
6253 gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
6255 event->button, event->time);
6258 gtk_menu_popup (GTK_MENU (menu), NULL, NULL,
6259 popup_position_func, label,
6260 0, gtk_get_current_event_time ());
6261 gtk_menu_shell_select_first (GTK_MENU_SHELL (menu), FALSE);
6266 gtk_label_clear_links (GtkLabel *label)
6268 GtkLabelPrivate *priv = label->priv;
6270 if (!priv->select_info)
6273 g_list_foreach (priv->select_info->links, (GFunc)link_free, NULL);
6274 g_list_free (priv->select_info->links);
6275 priv->select_info->links = NULL;
6276 priv->select_info->active_link = NULL;
6280 gtk_label_rescan_links (GtkLabel *label)
6282 GtkLabelPrivate *priv = label->priv;
6283 PangoLayout *layout = priv->layout;
6284 PangoAttrList *attlist;
6285 PangoAttrIterator *iter;
6288 if (!priv->select_info || !priv->select_info->links)
6291 attlist = pango_layout_get_attributes (layout);
6293 if (attlist == NULL)
6296 iter = pango_attr_list_get_iterator (attlist);
6298 links = priv->select_info->links;
6302 PangoAttribute *underline;
6303 PangoAttribute *color;
6305 underline = pango_attr_iterator_get (iter, PANGO_ATTR_UNDERLINE);
6306 color = pango_attr_iterator_get (iter, PANGO_ATTR_FOREGROUND);
6308 if (underline != NULL && color != NULL)
6311 PangoRectangle start_pos;
6312 PangoRectangle end_pos;
6315 pango_attr_iterator_range (iter, &start, &end);
6316 pango_layout_index_to_pos (layout, start, &start_pos);
6317 pango_layout_index_to_pos (layout, end, &end_pos);
6321 g_warning ("Ran out of links");
6325 links = links->next;
6326 link->start = start;
6329 } while (pango_attr_iterator_next (iter));
6331 pango_attr_iterator_destroy (iter);
6335 gtk_label_activate_link (GtkLabel *label,
6338 GtkWidget *widget = GTK_WIDGET (label);
6339 GError *error = NULL;
6341 if (!gtk_show_uri (gtk_widget_get_screen (widget),
6342 uri, gtk_get_current_event_time (), &error))
6344 g_warning ("Unable to show '%s': %s", uri, error->message);
6345 g_error_free (error);
6352 emit_activate_link (GtkLabel *label,
6355 GtkLabelPrivate *priv = label->priv;
6358 g_signal_emit (label, signals[ACTIVATE_LINK], 0, link->uri, &handled);
6359 if (handled && priv->track_links && !link->visited)
6361 link->visited = TRUE;
6362 /* FIXME: shouldn't have to redo everything here */
6363 gtk_label_recalculate (label);
6368 gtk_label_activate_current_link (GtkLabel *label)
6371 GtkWidget *widget = GTK_WIDGET (label);
6373 link = gtk_label_get_focus_link (label);
6377 emit_activate_link (label, link);
6381 GtkWidget *toplevel;
6383 GtkWidget *default_widget, *focus_widget;
6385 toplevel = gtk_widget_get_toplevel (widget);
6386 if (GTK_IS_WINDOW (toplevel))
6388 window = GTK_WINDOW (toplevel);
6392 default_widget = gtk_window_get_default_widget (window);
6393 focus_widget = gtk_window_get_focus (window);
6395 if (default_widget != widget &&
6396 !(widget == focus_widget && (!default_widget || !gtk_widget_is_sensitive (default_widget))))
6397 gtk_window_activate_default (window);
6403 static GtkLabelLink *
6404 gtk_label_get_current_link (GtkLabel *label)
6406 GtkLabelPrivate *priv = label->priv;
6409 if (!priv->select_info)
6412 if (priv->select_info->link_clicked)
6413 link = priv->select_info->active_link;
6415 link = gtk_label_get_focus_link (label);
6421 * gtk_label_get_current_uri:
6422 * @label: a #GtkLabel
6424 * Returns the URI for the currently active link in the label.
6425 * The active link is the one under the mouse pointer or, in a
6426 * selectable label, the link in which the text cursor is currently
6429 * This function is intended for use in a #GtkLabel::activate-link handler
6430 * or for use in a #GtkWidget::query-tooltip handler.
6432 * Returns: the currently active URI. The string is owned by GTK+ and must
6433 * not be freed or modified.
6438 gtk_label_get_current_uri (GtkLabel *label)
6442 g_return_val_if_fail (GTK_IS_LABEL (label), NULL);
6444 link = gtk_label_get_current_link (label);
6453 * gtk_label_set_track_visited_links:
6454 * @label: a #GtkLabel
6455 * @track_links: %TRUE to track visited links
6457 * Sets whether the label should keep track of clicked
6458 * links (and use a different color for them).
6463 gtk_label_set_track_visited_links (GtkLabel *label,
6464 gboolean track_links)
6466 GtkLabelPrivate *priv;
6468 g_return_if_fail (GTK_IS_LABEL (label));
6472 track_links = track_links != FALSE;
6474 if (priv->track_links != track_links)
6476 priv->track_links = track_links;
6478 /* FIXME: shouldn't have to redo everything here */
6479 gtk_label_recalculate (label);
6481 g_object_notify (G_OBJECT (label), "track-visited-links");
6486 * gtk_label_get_track_visited_links:
6487 * @label: a #GtkLabel
6489 * Returns whether the label is currently keeping track
6492 * Returns: %TRUE if clicked links are remembered
6497 gtk_label_get_track_visited_links (GtkLabel *label)
6499 g_return_val_if_fail (GTK_IS_LABEL (label), FALSE);
6501 return label->priv->track_links;
6505 gtk_label_query_tooltip (GtkWidget *widget,
6508 gboolean keyboard_tip,
6509 GtkTooltip *tooltip)
6511 GtkLabel *label = GTK_LABEL (widget);
6512 GtkLabelPrivate *priv = label->priv;
6513 GtkLabelSelectionInfo *info = priv->select_info;
6517 if (info && info->links)
6521 if (info->selection_anchor == info->selection_end)
6522 index = info->selection_anchor;
6526 if (!get_layout_index (label, x, y, &index))
6532 for (l = info->links; l != NULL; l = l->next)
6534 GtkLabelLink *link = l->data;
6535 if (index >= link->start && index <= link->end)
6539 gtk_tooltip_set_markup (tooltip, link->title);
6548 return GTK_WIDGET_CLASS (gtk_label_parent_class)->query_tooltip (widget,
6555 _gtk_label_get_cursor_position (GtkLabel *label)
6557 GtkLabelPrivate *priv = label->priv;
6559 if (priv->select_info && priv->select_info->selectable)
6560 return g_utf8_pointer_to_offset (priv->text,
6561 priv->text + priv->select_info->selection_end);
6567 _gtk_label_get_selection_bound (GtkLabel *label)
6569 GtkLabelPrivate *priv = label->priv;
6571 if (priv->select_info && priv->select_info->selectable)
6572 return g_utf8_pointer_to_offset (priv->text,
6573 priv->text + priv->select_info->selection_anchor);