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 11 namespace gfx { 12 13 class Canvas; 14 class Rect; 15 16 class 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 ~CanvasPaint()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