// Copyright 2014 The Chromium Authors
// 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/slim/ui_resource_layer.h"
#include "chrome/browser/thumbnail/cc/thumbnail.h"
#include "ui/gfx/geometry/size_conversions.h"
namespace android {
// static
scoped_refptr<ThumbnailLayer> ThumbnailLayer::Create() {
return base::WrapRefCounted(new ThumbnailLayer());
}
void ThumbnailLayer::SetThumbnail(thumbnail::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;
clipped_ = true;
gfx::Size clipped_content = 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::ClearClip() {
layer_->SetUV(gfx::PointF(0.f, 0.f), gfx::PointF(1.f, 1.f));
layer_->SetBounds(gfx::Size(content_size_.width(), content_size_.height()));
clipped_ = false;
}
void ThumbnailLayer::AddSelfToParentOrReplaceAt(
scoped_refptr<cc::slim::Layer> parent,
size_t index) {
if (index >= parent->children().size()) {
parent->AddChild(layer_);
} else if (parent->children()[index]->id() != layer_->id()) {
parent->ReplaceChild(parent->children()[index].get(), layer_);
}
}
scoped_refptr<cc::slim::Layer> ThumbnailLayer::layer() {
return layer_;
}
ThumbnailLayer::ThumbnailLayer() : layer_(cc::slim::UIResourceLayer::Create()) {
layer_->SetIsDrawable(true);
}
ThumbnailLayer::~ThumbnailLayer() = default;
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;
if (clipped_) {
Clip(last_clipping_);
} else {
ClearClip();
}
}
}
} // namespace android