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1 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 // Creates a link button that shows |text| in blue and underlined. The cursor
6 // changes to a hand when over the link.  This is like the GTK LinkButton, but
7 // it doesn't call the global URI link handler, etc.  It is a button subclass,
8 // so you can just handle the clicked signal.
9 
10 #ifndef CHROME_BROWSER_UI_GTK_GTK_CHROME_LINK_BUTTON_H_
11 #define CHROME_BROWSER_UI_GTK_GTK_CHROME_LINK_BUTTON_H_
12 #pragma once
13 
14 #include <gdk/gdk.h>
15 #include <gtk/gtk.h>
16 
17 G_BEGIN_DECLS
18 
19 #define GTK_TYPE_CHROME_LINK_BUTTON        (gtk_chrome_link_button_get_type ())
20 #define GTK_CHROME_LINK_BUTTON(obj)        (G_TYPE_CHECK_INSTANCE_CAST((obj), \
21                                             GTK_TYPE_CHROME_LINK_BUTTON, \
22                                             GtkChromeLinkButton))
23 #define GTK_CHROME_LINK_BUTTON_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), \
24                                              GTK_TYPE_CHROME_LINK_BUTTON, \
25                                              GtkChromeLinkButtonClass))
26 #define GTK_IS_CHROME_LINK_BUTTON(obj)                           \
27   (G_TYPE_CHECK_INSTANCE_TYPE((obj), GTK_TYPE_CHROME_LINK_BUTTON))
28 #define GTK_IS_CHROME_LINK_BUTTON_CLASS(klass)                   \
29   (G_TYPE_CHECK_CLASS_TYPE((klass), GTK_TYPE_CHROME_LINK_BUTTON))
30 #define GTK_CHROME_LINK_BUTTON_GET_CLASS(obj) \
31   (G_TYPE_INSTANCE_GET_CLASS((obj), GTK_TYPE_CHROME_LINK_BUTTON, \
32                              GtkChromeLinkButton))
33 
34 typedef struct _GtkChromeLinkButton        GtkChromeLinkButton;
35 typedef struct _GtkChromeLinkButtonClass   GtkChromeLinkButtonClass;
36 
37 struct _GtkChromeLinkButton {
38   GtkButton button;
39   GtkWidget* label;
40   gchar* normal_markup;
41   gchar* pressed_markup;
42   gboolean is_normal;
43   gchar normal_color[9];
44   gchar* native_markup;
45   gboolean using_native_theme;
46   GdkCursor* hand_cursor;
47   gchar* text;
48   gboolean uses_markup;
49 };
50 
51 struct _GtkChromeLinkButtonClass {
52   GtkButtonClass parent_class;
53 };
54 
55 // Make a link button with display text |text|.
56 GtkWidget* gtk_chrome_link_button_new(const char* text);
57 
58 // As above, but don't escape markup in the text.
59 GtkWidget* gtk_chrome_link_button_new_with_markup(const char* markup);
60 
61 // Set whether the link button draws natively (using "link-color"). The default
62 // is TRUE.
63 void gtk_chrome_link_button_set_use_gtk_theme(GtkChromeLinkButton* button,
64                                               gboolean use_gtk);
65 
66 // Set the label text of the link.
67 void gtk_chrome_link_button_set_label(GtkChromeLinkButton* button,
68                                       const char* text);
69 
70 // Set the color when the link is in a normal state (i.e. not pressed).
71 // If not set, or called NULL |color|, the color will be blue.
72 void gtk_chrome_link_button_set_normal_color(GtkChromeLinkButton* button,
73                                              const GdkColor* color);
74 
75 GType gtk_chrome_link_button_get_type();
76 
77 G_END_DECLS
78 
79 #endif  // CHROME_BROWSER_UI_GTK_GTK_CHROME_LINK_BUTTON_H_
80