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_CANVAS_PAINT_H_ 6#define UI_GFX_CANVAS_PAINT_H_ 7 8#include "ui/gfx/gfx_export.h" 9#include "ui/gfx/native_widget_types.h" 10 11namespace gfx { 12 13class Canvas; 14class Rect; 15 16class CanvasPaint { 17 public: 18 // Creates a canvas that paints to |view| when it is destroyed. The canvas is 19 // sized to the client area of |view|. 20 GFX_EXPORT static CanvasPaint* CreateCanvasPaint(gfx::NativeView view); 21 22 virtual ~CanvasPaint() {} 23 24 // Returns true if the canvas has an invalid rect that needs to be repainted. 25 virtual bool IsValid() const = 0; 26 27 // Returns the rectangle that is invalid. 28 virtual gfx::Rect GetInvalidRect() const = 0; 29 30 // Returns the underlying Canvas. 31 virtual Canvas* AsCanvas() = 0; 32}; 33 34} // namespace gfx 35 36#endif // UI_GFX_CANVAS_PAINT_H_ 37