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// Copyright 2013 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 "ui/app_list/app_list_folder_item.h"
#include "ui/gfx/canvas.h"
#include "ui/gfx/image/canvas_image_source.h"
#include "ui/gfx/image/image_skia_operations.h"
namespace app_list {
namespace {
const int kIconDimension = 48;
const size_t kNumTopApps = 4;
const int kItemIconDimension = 16;
// Generates the folder icon with the top 4 child item icons laid in 2x2 tile.
class FolderImageSource : public gfx::CanvasImageSource {
public:
typedef std::vector<gfx::ImageSkia> Icons;
FolderImageSource(const Icons& icons, const gfx::Size& size)
: gfx::CanvasImageSource(size, false),
icons_(icons),
size_(size) {
DCHECK(icons.size() <= kNumTopApps);
}
virtual ~FolderImageSource() {}
private:
void DrawIcon(gfx::Canvas* canvas,
const gfx::ImageSkia& icon,
const gfx::Size icon_size,
int x, int y) {
gfx::ImageSkia resized(
gfx::ImageSkiaOperations::CreateResizedImage(
icon, skia::ImageOperations::RESIZE_BEST, icon_size));
canvas->DrawImageInt(resized, 0, 0, resized.width(), resized.height(),
x, y, resized.width(), resized.height(), true);
}
// gfx::CanvasImageSource overrides:
virtual void Draw(gfx::Canvas* canvas) OVERRIDE {
// Draw folder circle.
gfx::Point center = gfx::Point(size().width() / 2 , size().height() / 2);
const SkColor kCircleColor = SkColorSetRGB(0xE1, 0xE1, 0xE1);
SkPaint paint;
paint.setStyle(SkPaint::kFill_Style);
paint.setAntiAlias(true);
paint.setColor(kCircleColor);
canvas->DrawCircle(center, size().width() / 2, paint);
if (icons_.size() == 0)
return;
// Tiled icon coordinates.
const int delta_to_center = 1;
const gfx::Size item_icon_size =
gfx::Size(kItemIconDimension, kItemIconDimension);
int left_x = center.x() - item_icon_size.width() - delta_to_center;
int top_y = center.y() - item_icon_size.height() - delta_to_center;
int right_x = center.x() + delta_to_center;
int bottom_y = center.y() + delta_to_center;
// top left icon
size_t i = 0;
DrawIcon(canvas, icons_[i++], item_icon_size, left_x, top_y);
// top right icon
if (i < icons_.size())
DrawIcon(canvas, icons_[i++], item_icon_size, right_x, top_y);
// left bottm icon
if (i < icons_.size())
DrawIcon(canvas, icons_[i++], item_icon_size, left_x, bottom_y);
// right bottom icon
if (i < icons_.size())
DrawIcon(canvas, icons_[i], item_icon_size, right_x, bottom_y);
}
Icons icons_;
gfx::Size size_;
DISALLOW_COPY_AND_ASSIGN(FolderImageSource);
};
} // namespace
AppListFolderItem::AppListFolderItem(const std::string& id)
: AppListItemModel(id),
apps_(new Apps) {
}
AppListFolderItem::~AppListFolderItem() {
for (size_t i = 0; i < top_items_.size(); ++i)
top_items_[i]->RemoveObserver(this);
}
void AppListFolderItem::AddItem(AppListItemModel* item) {
std::string sort_order = item->GetSortOrder();
// Note: ui::ListModel is not a sorted list.
size_t index = 0;
for (; index < apps_->item_count(); ++index) {
if (sort_order < apps_->GetItemAt(index)->GetSortOrder())
break;
}
apps_->AddAt(index, item);
if (index <= kNumTopApps)
UpdateTopItems();
}
void AppListFolderItem::DeleteItem(const std::string& id) {
for (size_t i = 0; i < apps_->item_count(); ++i) {
AppListItemModel* item = apps_->GetItemAt(i);
if (item->id() == id) {
scoped_ptr<AppListItemModel> to_be_deleted(apps_->RemoveAt(i));
DCHECK(item == to_be_deleted.get());
if (i <= kNumTopApps)
UpdateTopItems();
return;
}
}
}
void AppListFolderItem::UpdateIcon() {
FolderImageSource::Icons top_icons;
for (size_t i = 0; i < top_items_.size(); ++i)
top_icons.push_back(top_items_[i]->icon());
const gfx::Size icon_size = gfx::Size(kIconDimension, kIconDimension);
gfx::ImageSkia icon = gfx::ImageSkia(
new FolderImageSource(top_icons, icon_size),
icon_size);
SetIcon(icon, false);
}
std::string AppListFolderItem::GetSortOrder() const {
// For now, put folders at the end of the list.
// TODO(stevenjb): Implement synced app list ordering.
return "zzzzzzzz";
}
void AppListFolderItem::Activate(int event_flags) {
// Folder handling is implemented by the View, so do nothing.
}
// static
const char AppListFolderItem::kAppType[] = "FolderItem";
const char* AppListFolderItem::GetAppType() const {
return AppListFolderItem::kAppType;
}
ui::MenuModel* AppListFolderItem::GetContextMenuModel() {
// TODO(stevenjb/jennyz): Implement.
return NULL;
}
void AppListFolderItem::ItemIconChanged() {
UpdateIcon();
}
void AppListFolderItem::ItemTitleChanged() {
}
void AppListFolderItem::ItemHighlightedChanged() {
}
void AppListFolderItem::ItemIsInstallingChanged() {
}
void AppListFolderItem::ItemPercentDownloadedChanged() {
}
void AppListFolderItem::UpdateTopItems() {
for (size_t i = 0; i < top_items_.size(); ++i)
top_items_[i]->RemoveObserver(this);
top_items_.clear();
for (size_t i = 0; i < kNumTopApps && i < apps_->item_count(); ++i) {
AppListItemModel* item = apps_->GetItemAt(i);
item->AddObserver(this);
top_items_.push_back(item);
}
UpdateIcon();
}
} // namespace app_list
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