15821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Copyright (c) 2012 The Chromium Authors. All rights reserved. 25821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 35821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// found in the LICENSE file. 45821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 55821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#ifndef UI_GFX_IMAGE_CANVAS_IMAGE_SOURCE_H_ 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#define UI_GFX_IMAGE_CANVAS_IMAGE_SOURCE_H_ 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/basictypes.h" 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/compiler_specific.h" 1058537e28ecd584eab876aee8be7156509866d23aTorne (Richard Coles)#include "ui/gfx/gfx_export.h" 115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/image/image_skia_source.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/size.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace gfx { 155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class Canvas; 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class ImageSkiaRep; 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// CanvasImageSource is useful if you need to generate an image for 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// a scale factor using gfx::Canvas. It creates a new Canvas 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// with target scale factor and generates ImageSkiaRep when drawing is 215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// completed. 224e180b6a0b4720a9b8e9e959a882386f690f08ffTorne (Richard Coles)class GFX_EXPORT CanvasImageSource : public gfx::ImageSkiaSource { 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CanvasImageSource(const gfx::Size& size, bool is_opaque); 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Called when a new image needs to be drawn for a scale factor. 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual void Draw(gfx::Canvas* canvas) = 0; 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the size of images in DIP that this source will generate. 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const gfx::Size& size() const { return size_; }; 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Overridden from gfx::ImageSkiaSource. 3368043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) virtual gfx::ImageSkiaRep GetImageForScale(float scale) OVERRIDE; 345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) protected: 365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~CanvasImageSource() {} 375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const gfx::Size size_; 395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const bool is_opaque_; 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(CanvasImageSource); 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace gfx 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif // UI_GFX_IMAGE_CANVAS_IMAGE_SOURCE_H_ 46