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// Copyright 2011 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 "cc/resources/bitmap_content_layer_updater.h"
#include "cc/debug/devtools_instrumentation.h"
#include "cc/debug/rendering_stats_instrumentation.h"
#include "cc/resources/layer_painter.h"
#include "cc/resources/prioritized_resource.h"
#include "cc/resources/resource_update.h"
#include "cc/resources/resource_update_queue.h"
#include "skia/ext/platform_canvas.h"
namespace cc {
BitmapContentLayerUpdater::Resource::Resource(
BitmapContentLayerUpdater* updater,
scoped_ptr<PrioritizedResource> texture)
: LayerUpdater::Resource(texture.Pass()), updater_(updater) {}
BitmapContentLayerUpdater::Resource::~Resource() {}
void BitmapContentLayerUpdater::Resource::Update(ResourceUpdateQueue* queue,
gfx::Rect source_rect,
gfx::Vector2d dest_offset,
bool partial_update) {
updater_->UpdateTexture(
queue, texture(), source_rect, dest_offset, partial_update);
}
scoped_refptr<BitmapContentLayerUpdater> BitmapContentLayerUpdater::Create(
scoped_ptr<LayerPainter> painter,
RenderingStatsInstrumentation* stats_instrumentation,
int layer_id) {
return make_scoped_refptr(
new BitmapContentLayerUpdater(painter.Pass(),
stats_instrumentation,
layer_id));
}
BitmapContentLayerUpdater::BitmapContentLayerUpdater(
scoped_ptr<LayerPainter> painter,
RenderingStatsInstrumentation* stats_instrumentation,
int layer_id)
: ContentLayerUpdater(painter.Pass(), stats_instrumentation, layer_id),
opaque_(false) {}
BitmapContentLayerUpdater::~BitmapContentLayerUpdater() {}
scoped_ptr<LayerUpdater::Resource> BitmapContentLayerUpdater::CreateResource(
PrioritizedResourceManager* manager) {
return scoped_ptr<LayerUpdater::Resource>(
new Resource(this, PrioritizedResource::Create(manager)));
}
void BitmapContentLayerUpdater::PrepareToUpdate(
gfx::Rect content_rect,
gfx::Size tile_size,
float contents_width_scale,
float contents_height_scale,
gfx::Rect* resulting_opaque_rect) {
devtools_instrumentation::ScopedLayerTask paint_layer(
devtools_instrumentation::kPaintLayer, layer_id_);
if (canvas_size_ != content_rect.size()) {
devtools_instrumentation::ScopedLayerTask paint_setup(
devtools_instrumentation::kPaintSetup, layer_id_);
canvas_size_ = content_rect.size();
canvas_ = skia::AdoptRef(skia::CreateBitmapCanvas(
canvas_size_.width(), canvas_size_.height(), opaque_));
}
base::TimeTicks start_time =
rendering_stats_instrumentation_->StartRecording();
PaintContents(canvas_.get(),
content_rect,
contents_width_scale,
contents_height_scale,
resulting_opaque_rect);
base::TimeDelta duration =
rendering_stats_instrumentation_->EndRecording(start_time);
rendering_stats_instrumentation_->AddPaint(
duration,
content_rect.width() * content_rect.height());
}
void BitmapContentLayerUpdater::UpdateTexture(ResourceUpdateQueue* queue,
PrioritizedResource* texture,
gfx::Rect source_rect,
gfx::Vector2d dest_offset,
bool partial_update) {
CHECK(canvas_);
ResourceUpdate upload =
ResourceUpdate::CreateFromCanvas(texture,
canvas_,
content_rect(),
source_rect,
dest_offset);
if (partial_update)
queue->AppendPartialUpload(upload);
else
queue->AppendFullUpload(upload);
}
void BitmapContentLayerUpdater::ReduceMemoryUsage() {
canvas_.clear();
canvas_size_ = gfx::Size();
}
void BitmapContentLayerUpdater::SetOpaque(bool opaque) {
if (opaque != opaque_) {
canvas_.clear();
canvas_size_ = gfx::Size();
}
opaque_ = opaque;
}
} // namespace cc
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