1 // Copyright 2014 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.
5 // This class holds the URL to an image and the bitmap for the fetched image,
6 // and has code to fetch the bitmap from the URL.
8 #include "chrome/browser/image_holder.h"
10 #include "chrome/browser/profiles/profile.h"
11 #include "net/base/load_flags.h"
15 ImageHolder::ImageHolder(const GURL
& low_dpi_url
,
16 const GURL
& high_dpi_url
,
18 ImageHolderDelegate
* delegate
)
19 : low_dpi_url_(low_dpi_url
),
20 high_dpi_url_(high_dpi_url
),
21 low_dpi_fetched_(false),
22 high_dpi_fetched_(false),
26 // If a URL is invalid, clear it so we don't try to fetch it.
27 if (!low_dpi_url_
.is_valid()) {
28 low_dpi_url_
= GURL();
30 if (!high_dpi_url_
.is_valid()) {
31 high_dpi_url_
= GURL();
34 // Create a featcher for each URL that is set.
35 if (!low_dpi_url_
.is_empty()) {
36 CreateBitmapFetcher(low_dpi_url_
);
38 if (!high_dpi_url_
.is_empty()) {
39 CreateBitmapFetcher(high_dpi_url_
);
43 ImageHolder::~ImageHolder() {}
45 // This will let us know if we have tried to fetch once and the try completed.
46 // Currently there is no logic for retries.
47 bool ImageHolder::IsFetchingDone() const {
48 return ((low_dpi_url_
.is_empty() || low_dpi_fetched_
) &&
49 (high_dpi_url_
.is_empty() || high_dpi_fetched_
));
52 // If this bitmap has a valid GURL, create a fetcher for it.
53 void ImageHolder::CreateBitmapFetcher(const GURL
& url
) {
54 // Check for dups, ignore any request for a dup.
55 ScopedVector
<chrome::BitmapFetcher
>::iterator iter
;
56 for (iter
= fetchers_
.begin(); iter
!= fetchers_
.end(); ++iter
) {
57 if ((*iter
)->url() == url
)
62 fetchers_
.push_back(new chrome::BitmapFetcher(url
, this));
63 DVLOG(2) << __FUNCTION__
<< "Pushing bitmap " << url
;
67 void ImageHolder::StartFetch() {
68 // Now that we have queued them all, start the fetching.
69 ScopedVector
<chrome::BitmapFetcher
>::iterator iter
;
70 for (iter
= fetchers_
.begin(); iter
!= fetchers_
.end(); ++iter
) {
72 profile_
->GetRequestContext(),
74 net::URLRequest::CLEAR_REFERRER_ON_TRANSITION_FROM_SECURE_TO_INSECURE
,
79 // Method inherited from BitmapFetcher delegate.
80 void ImageHolder::OnFetchComplete(const GURL url
, const SkBitmap
* bitmap
) {
81 // TODO(petewil): Should I retry if a fetch fails?
82 // Match the bitmap to the URL to put it into the image with the correct scale
84 if (url
== low_dpi_url_
) {
85 low_dpi_fetched_
= true;
87 image_
.AddRepresentation(gfx::ImageSkiaRep(*bitmap
, 1.0));
88 } else if (url
== high_dpi_url_
) {
89 high_dpi_fetched_
= true;
91 image_
.AddRepresentation(gfx::ImageSkiaRep(*bitmap
, 2.0));
93 DVLOG(2) << __FUNCTION__
<< "Unmatched bitmap arrived " << url
;
96 // Notify callback of bitmap arrival.
97 delegate_
->OnFetchComplete();
100 } // namespace chrome.