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 #ifndef CHROME_BROWSER_UI_GTK_TABSTRIP_ORIGIN_PROVIDER_H_ 6 #define CHROME_BROWSER_UI_GTK_TABSTRIP_ORIGIN_PROVIDER_H_ 7 #pragma once 8 9 namespace gfx{ 10 class Point; 11 } 12 13 // Abstract interface that provides an offset of a widget. Many pieces of the 14 // UI don't need the full BrowserWindowGtk, but just need information about 15 // it's position relative to the tabstrip to draw correctly. This interface 16 // exists to make it easier to test piece by piece. 17 class TabstripOriginProvider { 18 public: ~TabstripOriginProvider()19 virtual ~TabstripOriginProvider() { } 20 21 // Return the origin of the tab strip in coordinates relative to where we 22 // start drawing the background theme image. This is the x coordinate of 23 // the origin of the GdkWindow of widget(), but the y coordinate of the origin 24 // of widget() itself. 25 // Used to help other widgets draw their background relative to the tabstrip. 26 // Should only be called after both the tabstrip and |widget| have been 27 // allocated. 28 virtual gfx::Point GetTabStripOriginForWidget(GtkWidget* widget) = 0; 29 }; 30 31 #endif // CHROME_BROWSER_UI_GTK_TABSTRIP_ORIGIN_PROVIDER_H_ 32