1 files changed, 89 insertions, 0 deletions
diff --git a/cc/BitmapCanvasLayerTextureUpdater.cpp b/cc/BitmapCanvasLayerTextureUpdater.cpp
new file mode 100644
index 0000000..240543f
--- /dev/null
+++ b/cc/BitmapCanvasLayerTextureUpdater.cpp
@@ -0,0 +1,89 @@
+// 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 WebCore {
+
+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 WebCore
+#endif // USE(ACCELERATED_COMPOSITING)