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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