Index: chrome/browser/image_loading_tracker.cc |
=================================================================== |
--- chrome/browser/image_loading_tracker.cc (revision 28272) |
+++ chrome/browser/image_loading_tracker.cc (working copy) |
@@ -1,114 +0,0 @@ |
-// Copyright (c) 2009 The Chromium Authors. All rights reserved. |
-// Use of this source code is governed by a BSD-style license that can be |
-// found in the LICENSE file. |
- |
-#include "chrome/browser/image_loading_tracker.h" |
- |
-#include "app/gfx/favicon_size.h" |
-#include "base/file_util.h" |
-#include "base/logging.h" |
-#include "base/message_loop.h" |
-#include "base/scoped_ptr.h" |
-#include "base/task.h" |
-#include "base/thread.h" |
-#include "chrome/browser/browser_process.h" |
-#include "skia/ext/image_operations.h" |
-#include "third_party/skia/include/core/SkBitmap.h" |
-#include "webkit/glue/image_decoder.h" |
- |
-//////////////////////////////////////////////////////////////////////////////// |
-// ImageLoadingTracker::LoadImageTask |
- |
-// The LoadImageTask is for asynchronously loading the image on the file thread. |
-// If the image is successfully loaded and decoded it will report back on the |
-// |callback_loop| to let the caller know the image is done loading. |
-class ImageLoadingTracker::LoadImageTask : public Task { |
- public: |
- // Constructor for the LoadImageTask class. |tracker| is the object that |
- // we use to communicate back to the entity that wants the image after we |
- // decode it. |path| is the path to load the image from. |index| is an |
- // identifier for the image that we pass back to the caller. |
- LoadImageTask(ImageLoadingTracker* tracker, |
- const FilePath& path, |
- size_t index) |
- : callback_loop_(MessageLoop::current()), |
- tracker_(tracker), |
- path_(path), |
- index_(index) {} |
- |
- void ReportBack(SkBitmap* image) { |
- DCHECK(image); |
- callback_loop_->PostTask(FROM_HERE, NewRunnableMethod(tracker_, |
- &ImageLoadingTracker::OnImageLoaded, |
- image, |
- index_)); |
- } |
- |
- virtual void Run() { |
- // Read the file from disk. |
- std::string file_contents; |
- if (!file_util::PathExists(path_) || |
- !file_util::ReadFileToString(path_, &file_contents)) { |
- ReportBack(NULL); |
- return; |
- } |
- |
- // Decode the image using WebKit's image decoder. |
- const unsigned char* data = |
- reinterpret_cast<const unsigned char*>(file_contents.data()); |
- webkit_glue::ImageDecoder decoder(gfx::Size(kFavIconSize, kFavIconSize)); |
- scoped_ptr<SkBitmap> decoded(new SkBitmap()); |
- *decoded = decoder.Decode(data, file_contents.length()); |
- if (decoded->empty()) { |
- ReportBack(NULL); |
- return; // Unable to decode. |
- } |
- |
- if (decoded->width() != kFavIconSize || decoded->height() != kFavIconSize) { |
- // The bitmap is not the correct size, re-sample. |
- int new_width = decoded->width(); |
- int new_height = decoded->height(); |
- // Calculate what dimensions to use within the constraints (16x16 max). |
- calc_favicon_target_size(&new_width, &new_height); |
- *decoded = skia::ImageOperations::Resize( |
- *decoded, skia::ImageOperations::RESIZE_LANCZOS3, |
- new_width, new_height); |
- } |
- |
- ReportBack(decoded.release()); |
- } |
- |
- private: |
- // The message loop that we need to call back on to report that we are done. |
- MessageLoop* callback_loop_; |
- |
- // The object that is waiting for us to respond back. |
- ImageLoadingTracker* tracker_; |
- |
- // The path to the image to load asynchronously. |
- FilePath path_; |
- |
- // The index of the icon being loaded. |
- size_t index_; |
-}; |
- |
-//////////////////////////////////////////////////////////////////////////////// |
-// ImageLoadingTracker |
- |
-void ImageLoadingTracker::PostLoadImageTask(FilePath path) { |
- MessageLoop* file_loop = g_browser_process->file_thread()->message_loop(); |
- file_loop->PostTask(FROM_HERE, new LoadImageTask(this, path, |
- posted_count_++)); |
-} |
- |
-void ImageLoadingTracker::OnImageLoaded(SkBitmap* image, size_t index) { |
- if (image == NULL) { |
- NOTREACHED() << "Image failed to decode."; |
- image = new SkBitmap(); |
- } |
- if (observer_) |
- observer_->OnImageLoaded(image, index); |
- delete image; |
- if (--image_count_ == 0) |
- Release(); // We are no longer needed. |
-} |