1 // Copyright 2013 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 #include "chrome/browser/ui/app_list/fast_show_pickler.h"
7 #include "third_party/skia/include/core/SkBitmap.h"
8 #include "ui/app_list/app_list_item.h"
9 #include "ui/gfx/image/image_skia_rep.h"
13 using app_list::AppListItem;
14 using app_list::AppListModel;
16 // These have the same meaning as SkBitmap::Config. Reproduced here to insure
17 // against their value changing in Skia. If the order of these changes kVersion
18 // should be incremented.
28 bool FormatToColorType(ImageFormat format, SkColorType* out) {
31 *out = kUnknown_SkColorType;
34 *out = kAlpha_8_SkColorType;
37 *out = kIndex_8_SkColorType;
40 *out = kRGB_565_SkColorType;
43 *out = kARGB_4444_SkColorType;
46 *out = kN32_SkColorType;
48 default: return false;
53 bool ColorTypeToFormat(SkColorType colorType, ImageFormat* out) {
55 case kUnknown_SkColorType:
58 case kAlpha_8_SkColorType:
61 case kIndex_8_SkColorType:
64 case kRGB_565_SkColorType:
67 case kARGB_4444_SkColorType:
70 case kN32_SkColorType:
73 default: return false;
78 bool PickleImage(Pickle* pickle, const gfx::ImageSkia& image) {
79 std::vector<gfx::ImageSkiaRep> reps(image.image_reps());
80 pickle->WriteInt(static_cast<int>(reps.size()));
81 for (std::vector<gfx::ImageSkiaRep>::const_iterator it = reps.begin();
82 it != reps.end(); ++it) {
83 pickle->WriteFloat(it->scale());
84 pickle->WriteInt(it->pixel_width());
85 pickle->WriteInt(it->pixel_height());
86 ImageFormat format = NONE;
87 if (!ColorTypeToFormat(it->sk_bitmap().colorType(), &format))
89 pickle->WriteInt(static_cast<int>(format));
90 int size = static_cast<int>(it->sk_bitmap().getSafeSize());
91 pickle->WriteInt(size);
92 SkBitmap bitmap = it->sk_bitmap();
93 SkAutoLockPixels lock(bitmap);
94 pickle->WriteBytes(bitmap.getPixels(), size);
99 bool UnpickleImage(PickleIterator* it, gfx::ImageSkia* out) {
101 if (!it->ReadInt(&rep_count))
104 gfx::ImageSkia result;
105 for (int i = 0; i < rep_count; ++i) {
107 if (!it->ReadFloat(&scale))
111 if (!it->ReadInt(&width))
115 if (!it->ReadInt(&height))
119 if (!it->ReadInt(&format_int))
121 ImageFormat format = static_cast<ImageFormat>(format_int);
122 SkColorType color_type = kUnknown_SkColorType;
123 if (!FormatToColorType(format, &color_type))
127 if (!it->ReadInt(&size))
130 const char* pixels = NULL;
131 if (!it->ReadBytes(&pixels, size))
135 if (!bitmap.allocPixels(SkImageInfo::Make(
136 width, height, color_type, kPremul_SkAlphaType)))
139 memcpy(bitmap.getPixels(), pixels, bitmap.getSize());
140 result.AddRepresentation(gfx::ImageSkiaRep(bitmap, scale));
149 scoped_ptr<AppListItem> FastShowPickler::UnpickleAppListItem(
150 PickleIterator* it) {
152 if (!it->ReadString(&id))
153 return scoped_ptr<AppListItem>();
154 scoped_ptr<AppListItem> result(new AppListItem(id));
156 if (!it->ReadString(&name))
157 return scoped_ptr<AppListItem>();
158 std::string short_name;
159 if (!it->ReadString(&short_name))
160 return scoped_ptr<AppListItem>();
161 result->SetNameAndShortName(name, short_name);
162 bool has_shadow = false;
163 if (!it->ReadBool(&has_shadow))
164 return scoped_ptr<AppListItem>();
166 if (!UnpickleImage(it, &icon))
167 return scoped_ptr<AppListItem>();
168 result->SetIcon(icon, has_shadow);
169 return result.Pass();
172 bool FastShowPickler::PickleAppListItem(Pickle* pickle, AppListItem* item) {
173 if (!pickle->WriteString(item->id()))
175 if (!pickle->WriteString(item->name()))
177 if (!pickle->WriteString(item->short_name()))
179 if (!pickle->WriteBool(item->has_shadow()))
181 if (!PickleImage(pickle, item->icon()))
186 void FastShowPickler::CopyOverItem(AppListItem* src_item,
187 AppListItem* dest_item) {
188 dest_item->SetNameAndShortName(src_item->name(), src_item->short_name());
189 dest_item->SetIcon(src_item->icon(), src_item->has_shadow());
190 // Do not set folder_id, pass that to AppListModel::AddItemToFolder() instead.
193 // The version of the pickle format defined here. This needs to be incremented
194 // whenever this format is changed so new clients can invalidate old versions.
195 const int FastShowPickler::kVersion = 3;
197 scoped_ptr<Pickle> FastShowPickler::PickleAppListModelForFastShow(
198 AppListModel* model) {
199 scoped_ptr<Pickle> result(new Pickle);
200 if (!result->WriteInt(kVersion))
201 return scoped_ptr<Pickle>();
202 if (!result->WriteInt((int)model->top_level_item_list()->item_count()))
203 return scoped_ptr<Pickle>();
204 for (size_t i = 0; i < model->top_level_item_list()->item_count(); ++i) {
205 if (!PickleAppListItem(result.get(),
206 model->top_level_item_list()->item_at(i))) {
207 return scoped_ptr<Pickle>();
210 return result.Pass();
213 void FastShowPickler::CopyOver(AppListModel* src, AppListModel* dest) {
214 DCHECK_EQ(0u, dest->top_level_item_list()->item_count());
215 for (size_t i = 0; i < src->top_level_item_list()->item_count(); i++) {
216 AppListItem* src_item = src->top_level_item_list()->item_at(i);
217 scoped_ptr<AppListItem> dest_item(new AppListItem(src_item->id()));
218 CopyOverItem(src_item, dest_item.get());
219 dest->AddItemToFolder(dest_item.Pass(), src_item->folder_id());
223 scoped_ptr<AppListModel>
224 FastShowPickler::UnpickleAppListModelForFastShow(Pickle* pickle) {
225 PickleIterator it(*pickle);
226 int read_version = 0;
227 if (!it.ReadInt(&read_version))
228 return scoped_ptr<AppListModel>();
229 if (read_version != kVersion)
230 return scoped_ptr<AppListModel>();
232 if (!it.ReadInt(&app_count))
233 return scoped_ptr<AppListModel>();
235 scoped_ptr<AppListModel> model(new AppListModel);
236 for (int i = 0; i < app_count; ++i) {
237 scoped_ptr<AppListItem> item(UnpickleAppListItem(&it).Pass());
239 return scoped_ptr<AppListModel>();
240 std::string folder_id = item->folder_id();
241 model->AddItemToFolder(item.Pass(), folder_id);