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// Copyright 2012 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/image_layer_updater.h"
#include "cc/prioritized_resource.h"
#include "cc/resource_update_queue.h"
namespace cc {
ImageLayerUpdater::Resource::Resource(ImageLayerUpdater* updater, scoped_ptr<PrioritizedResource> texture)
: LayerUpdater::Resource(texture.Pass())
, m_updater(updater)
{
}
ImageLayerUpdater::Resource::~Resource()
{
}
void ImageLayerUpdater::Resource::update(ResourceUpdateQueue& queue, const gfx::Rect& sourceRect, const gfx::Vector2d& destOffset, bool partialUpdate, RenderingStats&)
{
m_updater->updateTexture(queue, texture(), sourceRect, destOffset, partialUpdate);
}
// static
scoped_refptr<ImageLayerUpdater> ImageLayerUpdater::create()
{
return make_scoped_refptr(new ImageLayerUpdater());
}
scoped_ptr<LayerUpdater::Resource> ImageLayerUpdater::createResource(
PrioritizedResourceManager* manager)
{
return scoped_ptr<LayerUpdater::Resource>(new Resource(this, PrioritizedResource::create(manager)));
}
void ImageLayerUpdater::updateTexture(ResourceUpdateQueue& queue, PrioritizedResource* texture, const gfx::Rect& sourceRect, const gfx::Vector2d& destOffset, bool partialUpdate)
{
// Source rect should never go outside the image pixels, even if this
// is requested because the texture extends outside the image.
gfx::Rect clippedSourceRect = sourceRect;
gfx::Rect imageRect = gfx::Rect(0, 0, m_bitmap.width(), m_bitmap.height());
clippedSourceRect.Intersect(imageRect);
gfx::Vector2d clippedDestOffset = destOffset + gfx::Vector2d(clippedSourceRect.origin() - sourceRect.origin());
ResourceUpdate upload = ResourceUpdate::Create(texture,
&m_bitmap,
imageRect,
clippedSourceRect,
clippedDestOffset);
if (partialUpdate)
queue.appendPartialUpload(upload);
else
queue.appendFullUpload(upload);
}
void ImageLayerUpdater::setBitmap(const SkBitmap& bitmap)
{
m_bitmap = bitmap;
}
}
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