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)#include "ui/gfx/image/image_skia.h" 65821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 75821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <algorithm> 85821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <cmath> 95821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include <limits> 105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 11cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "base/command_line.h" 125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/logging.h" 135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/memory/scoped_ptr.h" 145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "base/threading/non_thread_safe.h" 15cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "ui/gfx/geometry/size_conversions.h" 165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/image/image_skia_operations.h" 175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/image/image_skia_source.h" 185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/rect.h" 195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/size.h" 205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#include "ui/gfx/skia_util.h" 21cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)#include "ui/gfx/switches.h" 225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace gfx { 245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// static 275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)gfx::ImageSkiaRep& NullImageRep() { 285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CR_DEFINE_STATIC_LOCAL(ImageSkiaRep, null_image_rep, ()); 295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return null_image_rep; 305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3268043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)std::vector<float>* g_supported_scales = NULL; 33cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 34cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// The difference to fall back to the smaller scale factor rather than the 35116680a4aac90f2aa7413d9095a592090648e557Ben Murdoch// larger one. For example, assume 1.20 is requested but only 1.0 and 2.0 are 36cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// supported. In that case, not fall back to 2.0 but 1.0, and then expand 37cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)// the image to 1.25. 38116680a4aac90f2aa7413d9095a592090648e557Ben Murdochconst float kFallbackToSmallerScaleDiff = 0.20f; 39cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace internal { 435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)namespace { 445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)class Matcher { 465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 4768043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) explicit Matcher(float scale) : scale_(scale) { 485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool operator()(const ImageSkiaRep& rep) const { 5168043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) return rep.scale() == scale_; 525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 5568043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) float scale_; 565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace 595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// A helper class such that ImageSkia can be cheaply copied. ImageSkia holds a 615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)// refptr instance of ImageSkiaStorage, which in turn holds all of ImageSkia's 622a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// information. Having both |base::RefCountedThreadSafe| and 632a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// |base::NonThreadSafe| may sounds strange but necessary to turn 642a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// the 'thread-non-safe modifiable ImageSkiaStorage' into 652a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// the 'thread-safe read-only ImageSkiaStorage'. 662a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)class ImageSkiaStorage : public base::RefCountedThreadSafe<ImageSkiaStorage>, 675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public base::NonThreadSafe { 685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) public: 695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageSkiaStorage(ImageSkiaSource* source, const gfx::Size& size) 705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : source_(source), 715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) size_(size), 725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) read_only_(false) { 735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 7568043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) ImageSkiaStorage(ImageSkiaSource* source, float scale) 765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : source_(source), 775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) read_only_(false) { 7868043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) ImageSkia::ImageSkiaReps::iterator it = FindRepresentation(scale, true); 792a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (it == image_reps_.end() || it->is_null()) 805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) source_.reset(); 815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) else 822a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) size_.SetSize(it->GetWidth(), it->GetHeight()); 835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool has_source() const { return source_.get() != NULL; } 865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::vector<gfx::ImageSkiaRep>& image_reps() { return image_reps_; } 885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) const gfx::Size& size() const { return size_; } 905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool read_only() const { return read_only_; } 925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void DeleteSource() { 945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) source_.reset(); 955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void SetReadOnly() { 985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) read_only_ = true; 995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) void DetachFromThread() { 1025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) base::NonThreadSafe::DetachFromThread(); 1035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Checks if the current thread can safely modify the storage. 1065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool CanModify() const { 1075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return !read_only_ && CalledOnValidThread(); 1085821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1095821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Checks if the current thread can safely read the storage. 1115821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool CanRead() const { 1125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return (read_only_ && !source_.get()) || CalledOnValidThread(); 1135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 115cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // Add a new representation. This checks if the scale of the added image 116cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // is not 1.0f, and mark the existing rep as scaled to make 117cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // the image high DPI aware. 118cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) void AddRepresentation(const ImageSkiaRep& image) { 119cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (image.scale() != 1.0f) { 120cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) for (ImageSkia::ImageSkiaReps::iterator it = image_reps_.begin(); 121cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) it < image_reps_.end(); 122cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) ++it) { 123cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (it->unscaled()) { 124cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) DCHECK_EQ(1.0f, it->scale()); 125cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) it->SetScaled(); 126cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) break; 127cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) } 128cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) } 129cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) } 130cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) image_reps_.push_back(image); 131cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) } 132cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 1335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Returns the iterator of the image rep whose density best matches 13468043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // |scale|. If the image for the |scale| doesn't exist in the storage and 13568043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // |storage| is set, it fetches new image by calling 136cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // |ImageSkiaSource::GetImageForScale|. There are two modes to deal with 137cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // arbitrary scale factors. 138cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // 1: Invoke GetImageForScale with requested scale and if the source 139cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // returns the image with different scale (if the image doesn't exist in 140cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // resource, for example), it will fallback to closest image rep. 141cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // 2: Invoke GetImageForScale with the closest known scale to the requested 142cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // one and rescale the image. 143cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // Right now only Windows uses 2 and other platforms use 1 by default. 144cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // TODO(mukai, oshima): abandon 1 code path and use 2 for every platforms. 1455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::vector<ImageSkiaRep>::iterator FindRepresentation( 14668043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) float scale, bool fetch_new_image) const { 1475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageSkiaStorage* non_const = const_cast<ImageSkiaStorage*>(this); 1485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageSkia::ImageSkiaReps::iterator closest_iter = 1505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) non_const->image_reps().end(); 1515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageSkia::ImageSkiaReps::iterator exact_iter = 1525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) non_const->image_reps().end(); 1535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) float smallest_diff = std::numeric_limits<float>::max(); 1545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (ImageSkia::ImageSkiaReps::iterator it = 1555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) non_const->image_reps().begin(); 1565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) it < image_reps_.end(); ++it) { 15768043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) if (it->scale() == scale) { 1585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // found exact match 1595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) fetch_new_image = false; 1605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (it->is_null()) 1615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) continue; 1625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) exact_iter = it; 1635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) break; 1645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 16568043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) float diff = std::abs(it->scale() - scale); 1665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (diff < smallest_diff && !it->is_null()) { 1675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) closest_iter = it; 1685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) smallest_diff = diff; 1695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 1715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 1725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (fetch_new_image && source_.get()) { 1735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(CalledOnValidThread()) << 1745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) "An ImageSkia with the source must be accessed by the same thread."; 1755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 176cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) ImageSkiaRep image; 177cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) float resource_scale = scale; 178cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (ImageSkia::IsDSFScalingInImageSkiaEnabled() && g_supported_scales) { 179cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (g_supported_scales->back() <= scale) { 180cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) resource_scale = g_supported_scales->back(); 181cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) } else { 182cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) for (size_t i = 0; i < g_supported_scales->size(); ++i) { 183cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if ((*g_supported_scales)[i] + kFallbackToSmallerScaleDiff >= 184cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) scale) { 185cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) resource_scale = (*g_supported_scales)[i]; 186cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) break; 187cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) } 188cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) } 189cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) } 190cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) } 191cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (ImageSkia::IsDSFScalingInImageSkiaEnabled() && 192cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) scale != resource_scale) { 193cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) std::vector<ImageSkiaRep>::iterator iter = FindRepresentation( 194cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) resource_scale, fetch_new_image); 195cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 196cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) DCHECK(iter != image_reps_.end()); 197cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 198cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) if (!iter->unscaled()) { 199cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) SkBitmap scaled_image; 200cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) gfx::Size unscaled_size(iter->pixel_width(), iter->pixel_height()); 201cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) gfx::Size scaled_size = ToCeiledSize( 202cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) gfx::ScaleSize(unscaled_size, scale / iter->scale())); 203cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 204cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) image = ImageSkiaRep(skia::ImageOperations::Resize( 205cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) iter->sk_bitmap(), 206cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) skia::ImageOperations::RESIZE_LANCZOS3, 207cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) scaled_size.width(), 208cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) scaled_size.height()), scale); 209cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) DCHECK_EQ(image.pixel_width(), scaled_size.width()); 210cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) DCHECK_EQ(image.pixel_height(), scaled_size.height()); 211cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) } else { 212cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) image = *iter; 213cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) } 214cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) } else { 215cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) image = source_->GetImageForScale(scale); 216cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) } 2175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2185821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // If the source returned the new image, store it. 2195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!image.is_null() && 2205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::find_if(image_reps_.begin(), image_reps_.end(), 22168043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) Matcher(image.scale())) == image_reps_.end()) { 2225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) non_const->image_reps().push_back(image); 2235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 22568043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // If the result image's scale isn't same as the expected scale, create 22668043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // null ImageSkiaRep with the |scale| so that the next lookup will 22768043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // fallback to the closest scale. 22868043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) if (image.is_null() || image.scale() != scale) { 22968043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) non_const->image_reps().push_back(ImageSkiaRep(SkBitmap(), scale)); 2305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // image_reps_ must have the exact much now, so find again. 23368043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) return FindRepresentation(scale, false); 2345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return exact_iter != image_reps_.end() ? exact_iter : closest_iter; 2365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) private: 2395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) virtual ~ImageSkiaStorage() { 2405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // We only care if the storage is modified by the same thread. 2415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Don't blow up even if someone else deleted the ImageSkia. 2425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DetachFromThread(); 2435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 2445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 24568043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // Vector of bitmaps and their associated scale. 2465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::vector<gfx::ImageSkiaRep> image_reps_; 2475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) scoped_ptr<ImageSkiaSource> source_; 2495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Size of the image in DIP. 2515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) gfx::Size size_; 2525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) bool read_only_; 2545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2552a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) friend class base::RefCountedThreadSafe<ImageSkiaStorage>; 2565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)}; 2575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // internal 2595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ImageSkia::ImageSkia() : storage_(NULL) { 2615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ImageSkia::ImageSkia(ImageSkiaSource* source, const gfx::Size& size) 2645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) : storage_(new internal::ImageSkiaStorage(source, size)) { 2655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(source); 2665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // No other thread has reference to this, so it's safe to detach the thread. 2675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DetachStorageFromThread(); 2685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 27068043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)ImageSkia::ImageSkia(ImageSkiaSource* source, float scale) 27168043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) : storage_(new internal::ImageSkiaStorage(source, scale)) { 2725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(source); 2735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!storage_->has_source()) 2745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) storage_ = NULL; 2755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // No other thread has reference to this, so it's safe to detach the thread. 2765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DetachStorageFromThread(); 2775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ImageSkia::ImageSkia(const ImageSkiaRep& image_rep) { 2805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Init(image_rep); 2815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // No other thread has reference to this, so it's safe to detach the thread. 2825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DetachStorageFromThread(); 2835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ImageSkia::ImageSkia(const ImageSkia& other) : storage_(other.storage_) { 2865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2885821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ImageSkia& ImageSkia::operator=(const ImageSkia& other) { 2895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) storage_ = other.storage_; 2905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return *this; 2915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)ImageSkia::~ImageSkia() { 2945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 2955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 2962a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)// static 29768043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)void ImageSkia::SetSupportedScales(const std::vector<float>& supported_scales) { 29868043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) if (g_supported_scales != NULL) 29968043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) delete g_supported_scales; 30068043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) g_supported_scales = new std::vector<float>(supported_scales); 30168043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) std::sort(g_supported_scales->begin(), g_supported_scales->end()); 30268043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)} 30368043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) 30468043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)// static 30568043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)const std::vector<float>& ImageSkia::GetSupportedScales() { 30668043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) DCHECK(g_supported_scales != NULL); 30768043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) return *g_supported_scales; 30868043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)} 30968043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) 31068043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)// static 31168043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)float ImageSkia::GetMaxSupportedScale() { 31268043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) return g_supported_scales->back(); 31368043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)} 31468043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) 31568043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)// static 3162a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)ImageSkia ImageSkia::CreateFrom1xBitmap(const SkBitmap& bitmap) { 317cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return ImageSkia(ImageSkiaRep(bitmap, 0.0f)); 318cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)} 319cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) 320cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles)bool ImageSkia::IsDSFScalingInImageSkiaEnabled() { 321cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) base::CommandLine* command_line = base::CommandLine::ForCurrentProcess(); 322cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) return !command_line->HasSwitch( 323f8ee788a64d60abd8f2d742a5fdedde054ecd910Torne (Richard Coles) switches::kDisableArbitraryScaleFactorInImageSkia); 3242a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)} 3252a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) 3262a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles)scoped_ptr<ImageSkia> ImageSkia::DeepCopy() const { 3272a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) ImageSkia* copy = new ImageSkia; 3285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (isNull()) 3292a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return scoped_ptr<ImageSkia>(copy); 3305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CHECK(CanRead()); 3325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) std::vector<gfx::ImageSkiaRep>& reps = storage_->image_reps(); 3345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (std::vector<gfx::ImageSkiaRep>::iterator iter = reps.begin(); 3355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) iter != reps.end(); ++iter) { 3362a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) copy->AddRepresentation(*iter); 3375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // The copy has its own storage. Detach the copy from the current 3395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // thread so that other thread can use this. 3402a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) if (!copy->isNull()) 3412a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) copy->storage_->DetachFromThread(); 3422a99a7e74a7f215066514fe81d2bfa6639d9edddTorne (Richard Coles) return scoped_ptr<ImageSkia>(copy); 3435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ImageSkia::BackedBySameObjectAs(const gfx::ImageSkia& other) const { 3465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return storage_.get() == other.storage_.get(); 3475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ImageSkia::AddRepresentation(const ImageSkiaRep& image_rep) { 3505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DCHECK(!image_rep.is_null()); 3515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3525821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(oshima): This method should be called |SetRepresentation| 3535821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // and replace the existing rep if there is already one with the 35468043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // same scale so that we can guarantee that a ImageSkia instance contains only 35568043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // one image rep per scale. This is not possible now as ImageLoader currently 35668043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) // stores need this feature, but this needs to be fixed. 3575821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (isNull()) { 3585821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) Init(image_rep); 3595821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } else { 3605821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CHECK(CanModify()); 361cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // If someone is adding ImageSkia explicitly, check if we should 362cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) // make the image high DPI aware. 363cedac228d2dd51db4b79ea1e72c7f249408ee061Torne (Richard Coles) storage_->AddRepresentation(image_rep); 3645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 3655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 36768043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)void ImageSkia::RemoveRepresentation(float scale) { 3685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (isNull()) 3695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 3705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CHECK(CanModify()); 3715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageSkiaReps& image_reps = storage_->image_reps(); 3735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageSkiaReps::iterator it = 37468043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) storage_->FindRepresentation(scale, false); 37568043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) if (it != image_reps.end() && it->scale() == scale) 3765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) image_reps.erase(it); 3775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 37968043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)bool ImageSkia::HasRepresentation(float scale) const { 3805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (isNull()) 3815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return false; 3825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CHECK(CanRead()); 3835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 38468043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) ImageSkiaReps::iterator it = storage_->FindRepresentation(scale, false); 38568043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) return (it != storage_->image_reps().end() && it->scale() == scale); 3865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 3875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 38868043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)const ImageSkiaRep& ImageSkia::GetRepresentation(float scale) const { 3895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (isNull()) 3905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NullImageRep(); 3915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CHECK(CanRead()); 3935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 39468043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) ImageSkiaReps::iterator it = storage_->FindRepresentation(scale, true); 3955821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (it == storage_->image_reps().end()) 3965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NullImageRep(); 3975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 3985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return *it; 3995821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ImageSkia::SetReadOnly() { 402868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) CHECK(storage_.get()); 4035821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) storage_->SetReadOnly(); 4045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) DetachStorageFromThread(); 4055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ImageSkia::MakeThreadSafe() { 408868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) CHECK(storage_.get()); 40968043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) EnsureRepsForSupportedScales(); 4105821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Delete source as we no longer needs it. 411868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (storage_.get()) 4125821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) storage_->DeleteSource(); 4135821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) storage_->SetReadOnly(); 4145821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CHECK(IsThreadSafe()); 4155821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4165821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4175821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ImageSkia::IsThreadSafe() const { 418868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) return !storage_.get() || (storage_->read_only() && !storage_->has_source()); 4195821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4205821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4215821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int ImageSkia::width() const { 4225821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return isNull() ? 0 : storage_->size().width(); 4235821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4245821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4255821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)gfx::Size ImageSkia::size() const { 4265821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return gfx::Size(width(), height()); 4275821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4285821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4295821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)int ImageSkia::height() const { 4305821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return isNull() ? 0 : storage_->size().height(); 4315821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4325821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4335821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)std::vector<ImageSkiaRep> ImageSkia::image_reps() const { 4345821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (isNull()) 4355821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return std::vector<ImageSkiaRep>(); 4365821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4375821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CHECK(CanRead()); 4385821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4395821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageSkiaReps internal_image_reps = storage_->image_reps(); 4405821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Create list of image reps to return, skipping null image reps which were 4415821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // added for caching purposes only. 4425821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) ImageSkiaReps image_reps; 4435821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) for (ImageSkiaReps::iterator it = internal_image_reps.begin(); 4445821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) it != internal_image_reps.end(); ++it) { 4455821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (!it->is_null()) 4465821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) image_reps.push_back(*it); 4475821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4485821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4495821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return image_reps; 4505821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4515821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 45268043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles)void ImageSkia::EnsureRepsForSupportedScales() const { 45368043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) DCHECK(g_supported_scales != NULL); 4545821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Don't check ReadOnly because the source may generate images 4555821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // even for read only ImageSkia. Concurrent access will be protected 4565821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // by |DCHECK(CalledOnValidThread())| in FindRepresentation. 457868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (storage_.get() && storage_->has_source()) { 45868043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) for (std::vector<float>::const_iterator it = g_supported_scales->begin(); 45968043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) it != g_supported_scales->end(); ++it) 46068043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) storage_->FindRepresentation(*it, true); 4615821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4625821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4635821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4645821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ImageSkia::Init(const ImageSkiaRep& image_rep) { 4655821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(pkotwicz): The image should be null whenever image rep is null. 4665821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (image_rep.sk_bitmap().empty()) { 4675821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) storage_ = NULL; 4685821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return; 4695821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4705821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) storage_ = new internal::ImageSkiaStorage( 4715821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) NULL, gfx::Size(image_rep.GetWidth(), image_rep.GetHeight())); 4725821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) storage_->image_reps().push_back(image_rep); 4735821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4745821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4755821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)SkBitmap& ImageSkia::GetBitmap() const { 4765821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (isNull()) { 4775821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Callers expect a ImageSkiaRep even if it is |isNull()|. 4785821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(pkotwicz): Fix this. 4795821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NullImageRep().mutable_sk_bitmap(); 4805821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) } 4815821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4825821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // TODO(oshima): This made a few tests flaky on Windows. 4835821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) // Fix the root cause and re-enable this. crbug.com/145623. 4845821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#if !defined(OS_WIN) 4855821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) CHECK(CanRead()); 4865821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)#endif 4875821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 48868043e1e95eeb07d5cae7aca370b26518b0867d6Torne (Richard Coles) ImageSkiaReps::iterator it = storage_->FindRepresentation(1.0f, true); 4895821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) if (it != storage_->image_reps().end()) 4905821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return it->mutable_sk_bitmap(); 4915821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) return NullImageRep().mutable_sk_bitmap(); 4925821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4935821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4945821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ImageSkia::CanRead() const { 495868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) return !storage_.get() || storage_->CanRead(); 4965821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 4975821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 4985821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)bool ImageSkia::CanModify() const { 499868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) return !storage_.get() || storage_->CanModify(); 5005821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5015821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5025821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)void ImageSkia::DetachStorageFromThread() { 503868fa2fe829687343ffae624259930155e16dbd8Torne (Richard Coles) if (storage_.get()) 5045821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) storage_->DetachFromThread(); 5055821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} 5065821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles) 5075821806d5e7f356e8fa4b058a389a808ea183019Torne (Richard Coles)} // namespace gfx 508