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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 "config.h"
#if USE(ACCELERATED_COMPOSITING)
#include "BitmapCanvasLayerTextureUpdater.h"
#include "LayerPainterChromium.h"
#include "PlatformColor.h"
#include "skia/ext/platform_canvas.h"
namespace cc {
BitmapCanvasLayerTextureUpdater::Texture::Texture(BitmapCanvasLayerTextureUpdater* textureUpdater, PassOwnPtr<CCPrioritizedTexture> texture)
: LayerTextureUpdater::Texture(texture)
, m_textureUpdater(textureUpdater)
{
}
BitmapCanvasLayerTextureUpdater::Texture::~Texture()
{
}
void BitmapCanvasLayerTextureUpdater::Texture::updateRect(CCResourceProvider* resourceProvider, const IntRect& sourceRect, const IntSize& destOffset)
{
textureUpdater()->updateTextureRect(resourceProvider, texture(), sourceRect, destOffset);
}
PassRefPtr<BitmapCanvasLayerTextureUpdater> BitmapCanvasLayerTextureUpdater::create(PassOwnPtr<LayerPainterChromium> painter)
{
return adoptRef(new BitmapCanvasLayerTextureUpdater(painter));
}
BitmapCanvasLayerTextureUpdater::BitmapCanvasLayerTextureUpdater(PassOwnPtr<LayerPainterChromium> painter)
: CanvasLayerTextureUpdater(painter)
, m_opaque(false)
{
}
BitmapCanvasLayerTextureUpdater::~BitmapCanvasLayerTextureUpdater()
{
}
PassOwnPtr<LayerTextureUpdater::Texture> BitmapCanvasLayerTextureUpdater::createTexture(CCPrioritizedTextureManager* manager)
{
return adoptPtr(new Texture(this, CCPrioritizedTexture::create(manager)));
}
LayerTextureUpdater::SampledTexelFormat BitmapCanvasLayerTextureUpdater::sampledTexelFormat(GC3Denum textureFormat)
{
// The component order may be bgra if we uploaded bgra pixels to rgba textures.
return PlatformColor::sameComponentOrder(textureFormat) ?
LayerTextureUpdater::SampledTexelFormatRGBA : LayerTextureUpdater::SampledTexelFormatBGRA;
}
void BitmapCanvasLayerTextureUpdater::prepareToUpdate(const IntRect& contentRect, const IntSize& tileSize, float contentsWidthScale, float contentsHeightScale, IntRect& resultingOpaqueRect, CCRenderingStats& stats)
{
if (m_canvasSize != contentRect.size()) {
m_canvasSize = contentRect.size();
m_canvas = adoptPtr(skia::CreateBitmapCanvas(m_canvasSize.width(), m_canvasSize.height(), m_opaque));
}
paintContents(m_canvas.get(), contentRect, contentsWidthScale, contentsHeightScale, resultingOpaqueRect, stats);
}
void BitmapCanvasLayerTextureUpdater::updateTextureRect(CCResourceProvider* resourceProvider, CCPrioritizedTexture* texture, const IntRect& sourceRect, const IntSize& destOffset)
{
const SkBitmap& bitmap = m_canvas->getDevice()->accessBitmap(false);
bitmap.lockPixels();
texture->upload(resourceProvider, static_cast<const uint8_t*>(bitmap.getPixels()), contentRect(), sourceRect, destOffset);
bitmap.unlockPixels();
}
void BitmapCanvasLayerTextureUpdater::setOpaque(bool opaque)
{
if (opaque != m_opaque) {
m_canvas.clear();
m_canvasSize = IntSize();
}
m_opaque = opaque;
}
} // namespace cc
#endif // USE(ACCELERATED_COMPOSITING)
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