// Copyright (c) 2011 The Chromium Authors. All rights reserved. // Use of this source code is governed by a BSD-style license that can be // found in the LICENSE file. #ifndef CHROME_BROWSER_UI_GTK_CUSTOM_DRAG_H_ #define CHROME_BROWSER_UI_GTK_CUSTOM_DRAG_H_ #include <gtk/gtk.h> #include "base/basictypes.h" #include "ui/base/gtk/gtk_signal.h" namespace gfx { class Image; } // Base class for programatically generated drags. class CustomDrag { protected: CustomDrag(gfx::Image* icon, int code_mask, GdkDragAction action); virtual ~CustomDrag(); virtual void OnDragDataGet(GtkWidget* widget, GdkDragContext* context, GtkSelectionData* selection_data, guint target_type, guint time) = 0; private: CHROMEGTK_CALLBACK_1(CustomDrag, void, OnDragBegin, GdkDragContext*); CHROMEGTK_CALLBACK_1(CustomDrag, void, OnDragEnd, GdkDragContext*); // Since this uses a virtual function, we can't use a macro. static void OnDragDataGetThunk(GtkWidget* widget, GdkDragContext* context, GtkSelectionData* selection_data, guint target_type, guint time, CustomDrag* custom_drag) { return custom_drag->OnDragDataGet(widget, context, selection_data, target_type, time); } // Can't use a OwnedWidgetGtk because the initialization of GtkInvisible // sinks the reference. GtkWidget* drag_widget_; // The image for the drag. The lifetime of the image should be managed outside // this object. Most icons are owned by the IconManager. gfx::Image* image_; DISALLOW_COPY_AND_ASSIGN(CustomDrag); }; #endif // CHROME_BROWSER_UI_GTK_CUSTOM_DRAG_H_