ui/gfx/gtk_preserve_window.h

   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 #ifndef UI_GFX_GTK_PRESERVE_WINDOW_H_
   6 #define UI_GFX_GTK_PRESERVE_WINDOW_H_
   7
   8 #include <atk/atk.h>
   9 #include <gdk/gdk.h>
  10 #include <gtk/gtk.h>
  11
  12 #include "ui/base/ui_export.h"
  13
  14 // GtkFixed creates an X window when realized and destroys an X window
  15 // when unrealized. GtkPreserveWindow allows overrides this
  16 // behaviour. When preserve is set (via gtk_preserve_window_set_preserve),
  17 // the X window is only destroyed when the widget is destroyed.
  18
  19 G_BEGIN_DECLS
  20
  21 #define GTK_TYPE_PRESERVE_WINDOW                                 \
  22     (gtk_preserve_window_get_type())
  23 #define GTK_PRESERVE_WINDOW(obj)                                 \
  24     (G_TYPE_CHECK_INSTANCE_CAST((obj), GTK_TYPE_PRESERVE_WINDOW, \
  25                                 GtkPreserveWindow))
  26 #define GTK_PRESERVE_WINDOW_CLASS(klass)                         \
  27     (G_TYPE_CHECK_CLASS_CAST((klass), GTK_TYPE_PRESERVE_WINDOW,  \
  28                              GtkPreserveWindowClass))
  29 #define GTK_IS_PRESERVE_WINDOW(obj)                              \
  30     (G_TYPE_CHECK_INSTANCE_TYPE((obj), GTK_TYPE_PRESERVE_WINDOW))
  31 #define GTK_IS_PRESERVE_WINDOW_CLASS(klass)                      \
  32     (G_TYPE_CHECK_CLASS_TYPE((klass), GTK_TYPE_PRESERVE_WINDOW))
  33 #define GTK_PRESERVE_WINDOW_GET_CLASS(obj)                       \
  34     (G_TYPE_INSTANCE_GET_CLASS((obj), GTK_TYPE_PRESERVE_WINDOW,  \
  35                                GtkPreserveWindowClass))
  36
  37 typedef struct _GtkPreserveWindow GtkPreserveWindow;
  38 typedef struct _GtkPreserveWindowClass GtkPreserveWindowClass;
  39
  40 struct _GtkPreserveWindow {
  41   // Parent class.
  42   GtkFixed fixed;
  43 };
  44
  45 struct _GtkPreserveWindowClass {
  46   GtkFixedClass parent_class;
  47 };
  48
  49 UI_EXPORT GType gtk_preserve_window_get_type() G_GNUC_CONST;
  50 UI_EXPORT GtkWidget* gtk_preserve_window_new();
  51
  52 // Whether or not we should preserve associated windows as the widget
  53 // is realized or unrealized.
  54 UI_EXPORT gboolean gtk_preserve_window_get_preserve(GtkPreserveWindow* widget);
  55 UI_EXPORT void gtk_preserve_window_set_preserve(GtkPreserveWindow* widget,
  56                                                 gboolean value);
  57
  58 // Whether or not someone else will gdk_window_resize the GdkWindow associated
  59 // with this widget (needed by the GPU process to synchronize resizing
  60 // with swapped between front and back buffer).
  61 UI_EXPORT void gtk_preserve_window_delegate_resize(GtkPreserveWindow* widget,
  62                                                    gboolean delegate);
  63
  64 // Provide a function to return an AtkObject* when calls to get_accessible
  65 // are made on this widget. The parameter |userdata| will be passed to the
  66 // factory function.
  67 UI_EXPORT void gtk_preserve_window_set_accessible_factory(
  68     GtkPreserveWindow* widget,
  69     AtkObject* (*factory)(void* userdata),
  70     gpointer userdata);
  71
  72 G_END_DECLS
  73
  74 #endif  // UI_GFX_GTK_PRESERVE_WINDOW_H_