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1 // Copyright (c) 2009 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 #include "webkit/glue/plugins/gtk_plugin_container.h" | |
6 | |
7 #include <gtk/gtk.h> | |
8 | |
9 #include "base/basictypes.h" | |
10 | |
11 namespace { | |
12 | |
13 // NOTE: This class doesn't have constructors/destructors, it is created | |
14 // through GLib's object management. | |
15 class GtkPluginContainer : public GtkSocket { | |
16 public: | |
17 // Sets the requested size of the widget. | |
18 void set_size(int width, int height) { | |
19 width_ = width; | |
20 height_ = height; | |
21 } | |
22 | |
23 // Casts a widget into a GtkPluginContainer, after checking the type. | |
24 template <class T> | |
25 static GtkPluginContainer *CastChecked(T *instance) { | |
26 return G_TYPE_CHECK_INSTANCE_CAST(instance, GetType(), GtkPluginContainer); | |
27 } | |
28 | |
29 // Create and register our custom container type with GTK. | |
30 static GType GetType() { | |
31 static GType type = 0; // We only want to register our type once. | |
32 if (!type) { | |
33 static const GTypeInfo info = { | |
34 sizeof(GtkSocketClass), | |
35 NULL, NULL, | |
36 static_cast<GClassInitFunc>(&ClassInit), | |
37 NULL, NULL, | |
38 sizeof(GtkPluginContainer), | |
39 0, &InstanceInit, | |
40 }; | |
41 type = g_type_register_static(GTK_TYPE_SOCKET, | |
42 "GtkPluginContainer", | |
43 &info, | |
44 static_cast<GTypeFlags>(0)); | |
45 } | |
46 return type; | |
47 } | |
48 | |
49 // Implementation of the class initializer. | |
50 static void ClassInit(gpointer klass, gpointer class_data_unusued) { | |
51 GtkWidgetClass* widget_class = reinterpret_cast<GtkWidgetClass*>(klass); | |
52 widget_class->size_request = &HandleSizeRequest; | |
53 } | |
54 | |
55 // Implementation of the instance initializer (constructor). | |
56 static void InstanceInit(GTypeInstance *instance, gpointer klass) { | |
57 GtkPluginContainer *container = CastChecked(instance); | |
58 container->set_size(0, 0); | |
59 } | |
60 | |
61 // Report our allocation size during size requisition. | |
62 static void HandleSizeRequest(GtkWidget* widget, | |
63 GtkRequisition* requisition) { | |
64 GtkPluginContainer *container = CastChecked(widget); | |
65 requisition->width = container->width_; | |
66 requisition->height = container->height_; | |
67 } | |
68 | |
69 int width_; | |
70 int height_; | |
71 DISALLOW_IMPLICIT_CONSTRUCTORS(GtkPluginContainer); | |
72 }; | |
73 | |
74 } // anonymous namespace | |
75 | |
76 // Create a new instance of our GTK widget object. | |
77 GtkWidget* gtk_plugin_container_new() { | |
78 return GTK_WIDGET(g_object_new(GtkPluginContainer::GetType(), NULL)); | |
79 } | |
80 | |
81 void gtk_plugin_container_set_size(GtkWidget *widget, int width, int height) { | |
82 GtkPluginContainer::CastChecked(widget)->set_size(width, height); | |
83 // Signal the parent that the size request has changed. | |
84 gtk_widget_queue_resize_no_redraw(widget); | |
85 } | |
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