1 // Copyright (c) 2012 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.
4
5 #include "chrome/browser/extensions/app_icon_loader_impl.h"
6
7 #include "base/stl_util.h"
8 #include "chrome/browser/extensions/extension_service.h"
9 #include "chrome/browser/extensions/extension_util.h"
10 #include "chrome/browser/profiles/profile.h"
11 #include "chrome/common/extensions/extension_constants.h"
12 #include "extensions/browser/extension_system.h"
13 #include "extensions/common/extension.h"
14 #include "extensions/common/manifest_handlers/icons_handler.h"
15 #include "ui/gfx/color_utils.h"
16 #include "ui/gfx/image/image_skia_operations.h"
17
18 namespace {
19
GetExtensionByID(Profile * profile,const std::string & id)20 const extensions::Extension* GetExtensionByID(Profile* profile,
21 const std::string& id) {
22 ExtensionService* service =
23 extensions::ExtensionSystem::Get(profile)->extension_service();
24 if (!service)
25 return NULL;
26 return service->GetInstalledExtension(id);
27 }
28
29 } // namespace
30
31 namespace extensions {
32
AppIconLoaderImpl(Profile * profile,int icon_size,AppIconLoader::Delegate * delegate)33 AppIconLoaderImpl::AppIconLoaderImpl(
34 Profile* profile,
35 int icon_size,
36 AppIconLoader::Delegate* delegate)
37 : profile_(profile),
38 delegate_(delegate),
39 icon_size_(icon_size) {
40
41 }
42
~AppIconLoaderImpl()43 AppIconLoaderImpl::~AppIconLoaderImpl() {
44 STLDeleteContainerPairFirstPointers(map_.begin(), map_.end());
45 }
46
FetchImage(const std::string & id)47 void AppIconLoaderImpl::FetchImage(const std::string& id) {
48 for (ImageToExtensionIDMap::const_iterator i = map_.begin();
49 i != map_.end(); ++i) {
50 if (i->second == id)
51 return; // Already loading the image.
52 }
53
54 const extensions::Extension* extension = GetExtensionByID(profile_, id);
55 if (!extension)
56 return;
57
58 extensions::IconImage* image = new extensions::IconImage(
59 profile_,
60 extension,
61 extensions::IconsInfo::GetIcons(extension),
62 icon_size_,
63 extensions::util::GetDefaultAppIcon(),
64 this);
65 // |map_| takes ownership of |image|.
66 map_[image] = id;
67
68 // Triggers image loading now instead of depending on paint message. This
69 // makes the temp blank image be shown for shorter time and improves user
70 // experience. See http://crbug.com/146114.
71 image->image_skia().EnsureRepsForSupportedScales();
72 }
73
ClearImage(const std::string & id)74 void AppIconLoaderImpl::ClearImage(const std::string& id) {
75 for (ImageToExtensionIDMap::iterator i = map_.begin();
76 i != map_.end(); ++i) {
77 if (i->second == id) {
78 delete i->first;
79 map_.erase(i);
80 break;
81 }
82 }
83 }
84
UpdateImage(const std::string & id)85 void AppIconLoaderImpl::UpdateImage(const std::string& id) {
86 for (ImageToExtensionIDMap::iterator i = map_.begin();
87 i != map_.end(); ++i) {
88 if (i->second == id) {
89 BuildImage(i->second, i->first->image_skia());
90 break;
91 }
92 }
93 }
94
OnExtensionIconImageChanged(extensions::IconImage * image)95 void AppIconLoaderImpl::OnExtensionIconImageChanged(
96 extensions::IconImage* image) {
97 ImageToExtensionIDMap::iterator i = map_.find(image);
98 if (i == map_.end())
99 return; // The image has been removed, do nothing.
100
101 BuildImage(i->second, i->first->image_skia());
102 }
103
BuildImage(const std::string & id,const gfx::ImageSkia & icon)104 void AppIconLoaderImpl::BuildImage(const std::string& id,
105 const gfx::ImageSkia& icon) {
106 gfx::ImageSkia image = icon;
107
108 if (!util::IsAppLaunchable(id, profile_)) {
109 const color_utils::HSL shift = {-1, 0, 0.6};
110 image = gfx::ImageSkiaOperations::CreateHSLShiftedImage(image, shift);
111 }
112
113 delegate_->SetAppImage(id, image);
114 }
115
116 } // namespace extensions
117