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      1 // Copyright (c) 2012 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 
     13 #include <gdk/gdk.h>
     14 #include <gtk/gtk.h>
     15 
     16 G_BEGIN_DECLS
     17 
     18 #define GTK_TYPE_CHROME_LINK_BUTTON        (gtk_chrome_link_button_get_type ())
     19 #define GTK_CHROME_LINK_BUTTON(obj)        (G_TYPE_CHECK_INSTANCE_CAST((obj), \
     20                                             GTK_TYPE_CHROME_LINK_BUTTON, \
     21                                             GtkChromeLinkButton))
     22 #define GTK_CHROME_LINK_BUTTON_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST((klass), \
     23                                              GTK_TYPE_CHROME_LINK_BUTTON, \
     24                                              GtkChromeLinkButtonClass))
     25 #define GTK_IS_CHROME_LINK_BUTTON(obj)                           \
     26   (G_TYPE_CHECK_INSTANCE_TYPE((obj), GTK_TYPE_CHROME_LINK_BUTTON))
     27 #define GTK_IS_CHROME_LINK_BUTTON_CLASS(klass)                   \
     28   (G_TYPE_CHECK_CLASS_TYPE((klass), GTK_TYPE_CHROME_LINK_BUTTON))
     29 #define GTK_CHROME_LINK_BUTTON_GET_CLASS(obj) \
     30   (G_TYPE_INSTANCE_GET_CLASS((obj), GTK_TYPE_CHROME_LINK_BUTTON, \
     31                              GtkChromeLinkButton))
     32 
     33 typedef struct _GtkChromeLinkButton        GtkChromeLinkButton;
     34 typedef struct _GtkChromeLinkButtonClass   GtkChromeLinkButtonClass;
     35 
     36 struct _GtkChromeLinkButton {
     37   GtkButton button;
     38   GtkWidget* label;
     39   gchar* normal_markup;
     40   gchar* pressed_markup;
     41   gchar* insensitive_markup;
     42   GtkStateType label_state;
     43   gchar normal_color[9];
     44   gchar* native_markup;
     45   gchar* insensitive_native_markup;
     46   gboolean using_native_theme;
     47   GdkCursor* hand_cursor;
     48   gchar* text;
     49   gboolean uses_markup;
     50 };
     51 
     52 struct _GtkChromeLinkButtonClass {
     53   GtkButtonClass parent_class;
     54 };
     55 
     56 // Make a link button with display text |text|.
     57 GtkWidget* gtk_chrome_link_button_new(const char* text);
     58 
     59 // As above, but don't escape markup in the text.
     60 GtkWidget* gtk_chrome_link_button_new_with_markup(const char* markup);
     61 
     62 // Set whether the link button draws natively (using "link-color"). The default
     63 // is TRUE.
     64 void gtk_chrome_link_button_set_use_gtk_theme(GtkChromeLinkButton* button,
     65                                               gboolean use_gtk);
     66 
     67 // Set the label text of the link.
     68 void gtk_chrome_link_button_set_label(GtkChromeLinkButton* button,
     69                                       const char* text);
     70 
     71 // Set the color when the link is in a normal state (i.e. not pressed).
     72 // If not set, or called NULL |color|, the color will be blue.
     73 void gtk_chrome_link_button_set_normal_color(GtkChromeLinkButton* button,
     74                                              const GdkColor* color);
     75 
     76 GType gtk_chrome_link_button_get_type();
     77 
     78 G_END_DECLS
     79 
     80 #endif  // CHROME_BROWSER_UI_GTK_GTK_CHROME_LINK_BUTTON_H_
     81