12a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Copyright (c) 2013 The Chromium Authors. All rights reserved. 22a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// Use of this source code is governed by a BSD-style license that can be 32a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// found in the LICENSE file. 42a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 52a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#ifndef ASH_DESKTOP_BACKGROUND_DESKTOP_WALLPAPER_RESIZER_H_ 62a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#define ASH_DESKTOP_BACKGROUND_DESKTOP_WALLPAPER_RESIZER_H_ 72a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 82a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ash/ash_export.h" 92a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ash/desktop_background/desktop_background_controller.h" 102a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/memory/weak_ptr.h" 112a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "base/observer_list.h" 122a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "skia/ext/image_operations.h" 13eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch#include "third_party/skia/include/core/SkBitmap.h" 142a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#include "ui/gfx/image/image_skia.h" 15868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)#include "ui/gfx/size.h" 162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 172a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)namespace ash { 182a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 192a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)class WallpaperResizerObserver; 202a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 21868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles)// Stores the current wallpaper data and resize it to |target_size| if needed. 222a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)class ASH_EXPORT WallpaperResizer { 232a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) public: 24f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // Returns a unique identifier corresponding to |image|, suitable for 25f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // comparison against the value returned by original_image_id(). If the image 26f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // is modified, its ID will change. 27f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) static uint32_t GetImageId(const gfx::ImageSkia& image); 28f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 29eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch WallpaperResizer(int image_resource_id, 30eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch const gfx::Size& target_size, 31eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch WallpaperLayout layout); 322a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 33eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch WallpaperResizer(const gfx::ImageSkia& image, 34eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch const gfx::Size& target_size, 35eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch WallpaperLayout layout); 362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 37eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch ~WallpaperResizer(); 382a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 39f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) const gfx::ImageSkia& image() const { return image_; } 40f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) uint32_t original_image_id() const { return original_image_id_; } 41f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) WallpaperLayout layout() const { return layout_; } 422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 43eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch // Called on the UI thread to run Resize() on the worker pool and post an 44eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch // OnResizeFinished() task back to the UI thread on completion. 452a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) void StartResize(); 462a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 472a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) // Add/Remove observers. 482a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) void AddObserver(WallpaperResizerObserver* observer); 492a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) void RemoveObserver(WallpaperResizerObserver* observer); 502a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 512a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) private: 52f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // Copies |resized_bitmap| to |image_| and notifies observers after Resize() 53f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // has finished running. 54eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch void OnResizeFinished(SkBitmap* resized_bitmap); 552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 562a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ObserverList<WallpaperResizerObserver> observers_; 572a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 58eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch // Image that should currently be used for wallpaper. It initially 59eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch // contains the original image and is updated to contain the resized 60eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch // image by OnResizeFinished(). 61f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) gfx::ImageSkia image_; 62f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) 63f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) // Unique identifier corresponding to the original (i.e. pre-resize) |image_|. 64f2477e01787aa58f445919b809d89e252beef54fTorne (Richard Coles) uint32_t original_image_id_; 652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 66868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) gfx::Size target_size_; 67868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) 68eb525c5499e34cc9c4b825d6d9e75bb07cc06aceBen Murdoch WallpaperLayout layout_; 692a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 702a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) base::WeakPtrFactory<WallpaperResizer> weak_ptr_factory_; 712a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 722a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) DISALLOW_COPY_AND_ASSIGN(WallpaperResizer); 732a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)}; 742a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 752a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} // namespace ash 762a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 772a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 782a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)#endif // ASH_DESKTOP_BACKGROUND_DESKTOP_WALLPAPER_RESIZER_H_ 79