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// Copyright 2014 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/android/compositor/layer/thumbnail_layer.h"
#include "cc/layers/ui_resource_layer.h"
#include "chrome/browser/android/thumbnail/thumbnail.h"
#include "ui/gfx/geometry/size_conversions.h"
namespace chrome {
namespace android {
// static
scoped_refptr<ThumbnailLayer> ThumbnailLayer::Create() {
return make_scoped_refptr(new ThumbnailLayer());
}
void ThumbnailLayer::SetThumbnail(Thumbnail* thumbnail) {
layer_->SetUIResourceId(thumbnail->ui_resource_id());
UpdateSizes(thumbnail->scaled_content_size(), thumbnail->scaled_data_size());
}
void ThumbnailLayer::Clip(const gfx::Rect& clipping) {
last_clipping_ = clipping;
gfx::Size clipped_content =
gfx::ToCeiledSize(gfx::Size(content_size_.width() - clipping.x(),
content_size_.height() - clipping.y()));
clipped_content.SetToMin(clipping.size());
layer_->SetBounds(clipped_content);
layer_->SetUV(
gfx::PointF(clipping.x() / resource_size_.width(),
clipping.y() / resource_size_.height()),
gfx::PointF(
(clipping.x() + clipped_content.width()) / resource_size_.width(),
(clipping.y() + clipped_content.height()) / resource_size_.height()));
}
void ThumbnailLayer::AddSelfToParentOrReplaceAt(scoped_refptr<cc::Layer> parent,
size_t index) {
if (index >= parent->children().size())
parent->AddChild(layer_);
else if (parent->child_at(index)->id() != layer_->id())
parent->ReplaceChild(parent->child_at(index), layer_);
}
scoped_refptr<cc::Layer> ThumbnailLayer::layer() {
return layer_;
}
ThumbnailLayer::ThumbnailLayer() : layer_(cc::UIResourceLayer::Create()) {
layer_->SetIsDrawable(true);
}
ThumbnailLayer::~ThumbnailLayer() {
}
void ThumbnailLayer::UpdateSizes(const gfx::SizeF& content_size,
const gfx::SizeF& resource_size) {
if (content_size != content_size_ || resource_size != resource_size_) {
content_size_ = content_size;
resource_size_ = resource_size;
Clip(last_clipping_);
}
}
} // namespace android
} // namespace chrome
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