void WebGraphicsLayer::updateContentBuffers()
{
if (!drawsContent()) {
m_mainBackingStore.clear();
m_previousBackingStore.clear();
return;
}
m_inUpdateMode = true;
// This is the only place we (re)create the main tiled backing store, once we
// have a remote client and we are ready to send our data to the UI process.
if (!m_mainBackingStore)
createBackingStore();
m_mainBackingStore->updateTileBuffers();
m_inUpdateMode = false;
// The previous backing store is kept around to avoid flickering between
// removing the existing tiles and painting the new ones. The first time
// the visibleRect is full painted we remove the previous backing store.
if (m_mainBackingStore->visibleAreaIsCovered())
m_previousBackingStore.clear();
}
void GraphicsLayer::getDebugBorderInfo(Color& color, float& width) const
{
if (drawsContent()) {
if (m_usingTiledLayer) {
color = Color(255, 128, 0, 128); // tiled layer: orange
width = 2;
return;
}
color = Color(0, 128, 32, 128); // normal layer: green
width = 2;
return;
}
if (masksToBounds()) {
color = Color(128, 255, 255, 48); // masking layer: pale blue
width = 20;
return;
}
color = Color(255, 255, 0, 192); // container: yellow
width = 2;
}
void WebGraphicsLayer::syncLayerState()
{
if (!m_shouldSyncLayerState)
return;
m_shouldSyncLayerState = false;
m_layerInfo.anchorPoint = anchorPoint();
m_layerInfo.backfaceVisible = backfaceVisibility();
m_layerInfo.childrenTransform = childrenTransform();
m_layerInfo.contentsOpaque = contentsOpaque();
m_layerInfo.contentsRect = contentsRect();
m_layerInfo.drawsContent = drawsContent();
m_layerInfo.mask = toWebLayerID(maskLayer());
m_layerInfo.masksToBounds = masksToBounds();
m_layerInfo.opacity = opacity();
m_layerInfo.parent = toWebLayerID(parent());
m_layerInfo.pos = position();
m_layerInfo.preserves3D = preserves3D();
m_layerInfo.replica = toWebLayerID(replicaLayer());
m_layerInfo.size = size();
m_layerInfo.transform = transform();
m_webGraphicsLayerClient->syncLayerState(m_id, m_layerInfo);
}
bool WebGLLayerChromium::paintRenderedResultsToCanvas(ImageBuffer* imageBuffer)
{
if (!m_drawingBuffer || !drawsContent())
return false;
IntSize framebufferSize = context()->getInternalFramebufferSize();
// Since we're using the same context as WebGL, we have to restore any state we change (in this case, just the framebuffer binding).
// FIXME: The WebGLRenderingContext tracks the current framebuffer binding, it would be slightly more efficient to use this value
// rather than querying it off of the context.
GC3Dint previousFramebuffer = 0;
context()->getIntegerv(GraphicsContext3D::FRAMEBUFFER_BINDING, &previousFramebuffer);
Platform3DObject framebuffer = context()->createFramebuffer();
context()->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, framebuffer);
context()->framebufferTexture2D(GraphicsContext3D::FRAMEBUFFER, GraphicsContext3D::COLOR_ATTACHMENT0, GraphicsContext3D::TEXTURE_2D, m_textureId, 0);
Extensions3DChromium* extensions = static_cast<Extensions3DChromium*>(context()->getExtensions());
extensions->paintFramebufferToCanvas(framebuffer, framebufferSize.width(), framebufferSize.height(), !context()->getContextAttributes().premultipliedAlpha, imageBuffer);
context()->deleteFramebuffer(framebuffer);
context()->bindFramebuffer(GraphicsContext3D::FRAMEBUFFER, previousFramebuffer);
return true;
}
void GraphicsLayerChromium::setNeedsDisplayInRect(const FloatRect& rect)
{
if (drawsContent())
m_layer->setNeedsDisplayRect(rect);
}
void GraphicsLayerChromium::setNeedsDisplay()
{
if (drawsContent())
m_layer->setNeedsDisplay();
}
bool GraphicsLayerTextureMapper::shouldHaveBackingStore() const
{
return drawsContent() && contentsAreVisible() && !m_size.isEmpty();
}
void ContentLayerChromium::updateContents()
{
RenderLayerBacking* backing = static_cast<RenderLayerBacking*>(m_owner->client());
if (!backing || backing->paintingGoesToWindow())
return;
ASSERT(drawsContent());
ASSERT(layerRenderer());
void* pixels = 0;
IntRect dirtyRect;
IntRect updateRect;
IntSize requiredTextureSize;
IntSize bitmapSize;
// FIXME: Remove this test when tiled layers are implemented.
if (requiresClippedUpdateRect()) {
// A layer with 3D transforms could require an arbitrarily large number
// of texels to be repainted, so ignore these layers until tiling is
// implemented.
if (!drawTransform().isIdentityOrTranslation()) {
m_skipsDraw = true;
return;
}
calculateClippedUpdateRect(dirtyRect, m_largeLayerDrawRect);
if (!layerRenderer()->checkTextureSize(m_largeLayerDrawRect.size())) {
m_skipsDraw = true;
return;
}
// If the portion of the large layer that's visible hasn't changed
// then we don't need to update it, _unless_ its contents have changed
// in which case we only update the dirty bits.
if (m_largeLayerDirtyRect == dirtyRect) {
if (!m_dirtyRect.intersects(dirtyRect))
return;
dirtyRect.intersect(IntRect(m_dirtyRect));
updateRect = dirtyRect;
requiredTextureSize = m_largeLayerDirtyRect.size();
} else {
m_largeLayerDirtyRect = dirtyRect;
requiredTextureSize = dirtyRect.size();
updateRect = IntRect(IntPoint(0, 0), dirtyRect.size());
}
} else {
dirtyRect = IntRect(m_dirtyRect);
IntRect boundsRect(IntPoint(0, 0), m_bounds);
requiredTextureSize = m_bounds;
// If the texture needs to be reallocated then we must redraw the entire
// contents of the layer.
if (requiredTextureSize != m_allocatedTextureSize)
dirtyRect = boundsRect;
else {
// Clip the dirtyRect to the size of the layer to avoid drawing
// outside the bounds of the backing texture.
dirtyRect.intersect(boundsRect);
}
updateRect = dirtyRect;
}
if (dirtyRect.isEmpty())
return;
#if PLATFORM(SKIA)
const SkBitmap* skiaBitmap = 0;
OwnPtr<skia::PlatformCanvas> canvas;
OwnPtr<PlatformContextSkia> skiaContext;
OwnPtr<GraphicsContext> graphicsContext;
canvas.set(new skia::PlatformCanvas(dirtyRect.width(), dirtyRect.height(), false));
skiaContext.set(new PlatformContextSkia(canvas.get()));
// This is needed to get text to show up correctly.
// FIXME: Does this take us down a very slow text rendering path?
skiaContext->setDrawingToImageBuffer(true);
graphicsContext.set(new GraphicsContext(reinterpret_cast<PlatformGraphicsContext*>(skiaContext.get())));
// Bring the canvas into the coordinate system of the paint rect.
canvas->translate(static_cast<SkScalar>(-dirtyRect.x()), static_cast<SkScalar>(-dirtyRect.y()));
m_owner->paintGraphicsLayerContents(*graphicsContext, dirtyRect);
const SkBitmap& bitmap = canvas->getDevice()->accessBitmap(false);
skiaBitmap = &bitmap;
ASSERT(skiaBitmap);
SkAutoLockPixels lock(*skiaBitmap);
SkBitmap::Config skiaConfig = skiaBitmap->config();
// FIXME: do we need to support more image configurations?
if (skiaConfig == SkBitmap::kARGB_8888_Config) {
pixels = skiaBitmap->getPixels();
bitmapSize = IntSize(skiaBitmap->width(), skiaBitmap->height());
}
#elif PLATFORM(CG)
Vector<uint8_t> tempVector;
int rowBytes = 4 * dirtyRect.width();
tempVector.resize(rowBytes * dirtyRect.height());
memset(tempVector.data(), 0, tempVector.size());
RetainPtr<CGColorSpaceRef> colorSpace(AdoptCF, CGColorSpaceCreateDeviceRGB());
RetainPtr<CGContextRef> contextCG(AdoptCF, CGBitmapContextCreate(tempVector.data(),
dirtyRect.width(), dirtyRect.height(), 8, rowBytes,
colorSpace.get(),
kCGImageAlphaPremultipliedFirst | kCGBitmapByteOrder32Host));
CGContextTranslateCTM(contextCG.get(), 0, dirtyRect.height());
CGContextScaleCTM(contextCG.get(), 1, -1);
GraphicsContext graphicsContext(contextCG.get());
// Translate the graphics context into the coordinate system of the dirty rect.
graphicsContext.translate(-dirtyRect.x(), -dirtyRect.y());
m_owner->paintGraphicsLayerContents(graphicsContext, dirtyRect);
pixels = tempVector.data();
bitmapSize = dirtyRect.size();
#else
#error "Need to implement for your platform."
#endif
unsigned textureId = m_contentsTexture;
if (!textureId)
textureId = layerRenderer()->createLayerTexture();
if (pixels)
updateTextureRect(pixels, bitmapSize, requiredTextureSize, updateRect, textureId);
}
void GraphicsLayerBlackBerry::setNeedsDisplayInRect(const FloatRect& rect)
{
if (drawsContent())
m_layer->setNeedsDisplayInRect(rect);
}
void GraphicsLayerBlackBerry::setNeedsDisplay()
{
if (drawsContent())
m_layer->setNeedsDisplay();
}
void GraphicsLayerTextureMapper::commitLayerChanges()
{
if (m_changeMask == NoChanges)
return;
if (m_changeMask & ChildrenChange) {
Vector<TextureMapperLayer*> textureMapperLayerChildren;
toTextureMapperLayerVector(children(), textureMapperLayerChildren);
m_layer->setChildren(textureMapperLayerChildren);
}
if (m_changeMask & MaskLayerChange)
m_layer->setMaskLayer(toTextureMapperLayer(maskLayer()));
if (m_changeMask & ReplicaLayerChange)
m_layer->setReplicaLayer(toTextureMapperLayer(replicaLayer()));
if (m_changeMask & PositionChange)
m_layer->setPosition(position());
if (m_changeMask & AnchorPointChange)
m_layer->setAnchorPoint(anchorPoint());
if (m_changeMask & SizeChange)
m_layer->setSize(size());
if (m_changeMask & TransformChange)
m_layer->setTransform(transform());
if (m_changeMask & ChildrenTransformChange)
m_layer->setChildrenTransform(childrenTransform());
if (m_changeMask & Preserves3DChange)
m_layer->setPreserves3D(preserves3D());
if (m_changeMask & ContentsRectChange)
m_layer->setContentsRect(contentsRect());
if (m_changeMask & MasksToBoundsChange)
m_layer->setMasksToBounds(masksToBounds());
if (m_changeMask & DrawsContentChange)
m_layer->setDrawsContent(drawsContent());
if (m_changeMask & ContentsVisibleChange)
m_layer->setContentsVisible(contentsAreVisible());
if (m_changeMask & ContentsOpaqueChange)
m_layer->setContentsOpaque(contentsOpaque());
if (m_changeMask & BackfaceVisibilityChange)
m_layer->setBackfaceVisibility(backfaceVisibility());
if (m_changeMask & OpacityChange)
m_layer->setOpacity(opacity());
if (m_changeMask & BackgroundColorChange)
m_layer->setSolidColor(solidColor());
#if ENABLE(CSS_FILTERS)
if (m_changeMask & FilterChange)
m_layer->setFilters(filters());
#endif
if (m_changeMask & BackingStoreChange)
m_layer->setBackingStore(m_backingStore);
if (m_changeMask & DebugVisualsChange)
m_layer->setDebugVisuals(isShowingDebugBorder(), debugBorderColor(), debugBorderWidth(), isShowingRepaintCounter());
if (m_changeMask & RepaintCountChange)
m_layer->setRepaintCount(repaintCount());
if (m_changeMask & ContentChange)
m_layer->setContentsLayer(platformLayer());
if (m_changeMask & AnimationChange)
m_layer->setAnimations(m_animations);
if (m_changeMask & AnimationStarted)
client()->notifyAnimationStarted(this, m_animationStartTime);
if (m_changeMask & FixedToViewporChange)
m_layer->setFixedToViewport(fixedToViewport());
if (m_changeMask & IsScrollableChange)
m_layer->setIsScrollable(isScrollable());
if (m_changeMask & CommittedScrollOffsetChange)
m_layer->didCommitScrollOffset(m_committedScrollOffset);
m_changeMask = NoChanges;
}
IntRect WebGraphicsLayer::tiledBackingStoreContentsRect()
{
if (!drawsContent())
return IntRect();
return IntRect(0, 0, size().width(), size().height());
}
void GraphicsLayerChromium::setNeedsDisplay()
{
if (drawsContent())
m_layer.invalidate();
}
bool CoordinatedGraphicsLayer::shouldHaveBackingStore() const
{
return drawsContent() && contentsAreVisible() && !m_size.isEmpty();
}