Merge WebKit at r82507: Initial merge by git

Change-Id: I60ce9d780725b58b45e54165733a8ffee23b683e

1 files changed, 262 insertions, 0 deletions

diff --git a/Source/WebKit2/WebProcess/WebPage/ca/LayerTreeHostCA.cpp b/Source/WebKit2/WebProcess/WebPage/ca/LayerTreeHostCA.cpp
new file mode 100644
index 0000000..2460607
--- /dev/null
+++ b/Source/WebKit2/WebProcess/WebPage/ca/LayerTreeHostCA.cpp
@@ -0,0 +1,262 @@
+/*
+ * Copyright (C) 2011 Apple Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
+ * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
+ * THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "LayerTreeHostCA.h"
+
+#include "DrawingAreaImpl.h"
+#include "WebPage.h"
+#include "WebProcess.h"
+#include <WebCore/Frame.h>
+#include <WebCore/FrameView.h>
+#include <WebCore/Page.h>
+#include <WebCore/Settings.h>
+
+using namespace WebCore;
+
+namespace WebKit {
+
+PassRefPtr<LayerTreeHostCA> LayerTreeHostCA::create(WebPage* webPage)
+{
+    return adoptRef(new LayerTreeHostCA(webPage));
+}
+
+LayerTreeHostCA::LayerTreeHostCA(WebPage* webPage)
+    : LayerTreeHost(webPage)
+    , m_isValid(true)
+    , m_notifyAfterScheduledLayerFlush(false)
+{
+
+    // Create a root layer.
+    m_rootLayer = GraphicsLayer::create(this);
+#ifndef NDEBUG
+    m_rootLayer->setName("LayerTreeHost root layer");
+#endif
+    m_rootLayer->setDrawsContent(false);
+    m_rootLayer->setSize(webPage->size());
+
+    m_nonCompositedContentLayer = GraphicsLayer::create(this);
+#ifndef NDEBUG
+    m_nonCompositedContentLayer->setName("LayerTreeHost non-composited content");
+#endif
+    m_nonCompositedContentLayer->setDrawsContent(true);
+    m_nonCompositedContentLayer->setContentsOpaque(m_webPage->drawsBackground() && !m_webPage->drawsTransparentBackground());
+    m_nonCompositedContentLayer->setSize(webPage->size());
+    if (m_webPage->corePage()->settings()->acceleratedDrawingEnabled())
+        m_nonCompositedContentLayer->setAcceleratesDrawing(true);
+
+    m_rootLayer->addChild(m_nonCompositedContentLayer.get());
+
+    if (m_webPage->hasPageOverlay())
+        createPageOverlayLayer();
+
+    platformInitialize();
+
+    scheduleLayerFlush();
+}
+
+LayerTreeHostCA::~LayerTreeHostCA()
+{
+    ASSERT(!m_isValid);
+    ASSERT(!m_rootLayer);
+#if PLATFORM(MAC)
+    ASSERT(!m_flushPendingLayerChangesRunLoopObserver);
+    ASSERT(!m_remoteLayerClient);
+#endif
+}
+
+const LayerTreeContext& LayerTreeHostCA::layerTreeContext()
+{
+    return m_layerTreeContext;
+}
+
+void LayerTreeHostCA::setShouldNotifyAfterNextScheduledLayerFlush(bool notifyAfterScheduledLayerFlush)
+{
+    m_notifyAfterScheduledLayerFlush = notifyAfterScheduledLayerFlush;
+}
+
+void LayerTreeHostCA::setRootCompositingLayer(GraphicsLayer* graphicsLayer)
+{
+    m_nonCompositedContentLayer->removeAllChildren();
+
+    // Add the accelerated layer tree hierarchy.
+    if (graphicsLayer)
+        m_nonCompositedContentLayer->addChild(graphicsLayer);
+}
+
+void LayerTreeHostCA::invalidate()
+{
+    ASSERT(m_isValid);
+    platformInvalidate();
+    m_rootLayer = nullptr;
+    m_isValid = false;
+}
+
+void LayerTreeHostCA::setNonCompositedContentsNeedDisplay(const IntRect& rect)
+{
+    m_nonCompositedContentLayer->setNeedsDisplayInRect(rect);
+    if (m_pageOverlayLayer)
+        m_pageOverlayLayer->setNeedsDisplayInRect(rect);
+
+    scheduleLayerFlush();
+}
+
+void LayerTreeHostCA::scrollNonCompositedContents(const IntRect& scrollRect, const IntSize& scrollOffset)
+{
+    setNonCompositedContentsNeedDisplay(scrollRect);
+}
+
+void LayerTreeHostCA::sizeDidChange(const IntSize& newSize)
+{
+    m_rootLayer->setSize(newSize);
+    m_nonCompositedContentLayer->setSize(newSize);
+
+    if (m_pageOverlayLayer)
+        m_pageOverlayLayer->setSize(newSize);
+
+    scheduleLayerFlush();
+    flushPendingLayerChanges();
+
+    platformSizeDidChange();
+}
+
+void LayerTreeHostCA::forceRepaint()
+{
+    scheduleLayerFlush();
+    flushPendingLayerChanges();
+
+    platformForceRepaint();
+}    
+
+void LayerTreeHostCA::didInstallPageOverlay()
+{
+    createPageOverlayLayer();
+    scheduleLayerFlush();
+}
+
+void LayerTreeHostCA::didUninstallPageOverlay()
+{
+    destroyPageOverlayLayer();
+    scheduleLayerFlush();
+}
+
+void LayerTreeHostCA::setPageOverlayNeedsDisplay(const IntRect& rect)
+{
+    ASSERT(m_pageOverlayLayer);
+    m_pageOverlayLayer->setNeedsDisplayInRect(rect);
+    scheduleLayerFlush();
+}
+
+void LayerTreeHostCA::notifyAnimationStarted(const WebCore::GraphicsLayer*, double time)
+{
+}
+
+void LayerTreeHostCA::notifySyncRequired(const WebCore::GraphicsLayer*)
+{
+}
+
+void LayerTreeHostCA::paintContents(const GraphicsLayer* graphicsLayer, GraphicsContext& graphicsContext, GraphicsLayerPaintingPhase, const IntRect& clipRect)
+{
+    if (graphicsLayer == m_nonCompositedContentLayer) {
+        m_webPage->drawRect(graphicsContext, clipRect);
+        return;
+    }
+
+    if (graphicsLayer == m_pageOverlayLayer) {
+        m_webPage->drawPageOverlay(graphicsContext, clipRect);
+        return;
+    }
+}
+
+bool LayerTreeHostCA::showDebugBorders() const
+{
+    return m_webPage->corePage()->settings()->showDebugBorders();
+}
+
+bool LayerTreeHostCA::showRepaintCounter() const
+{
+    return m_webPage->corePage()->settings()->showRepaintCounter();
+}
+
+void LayerTreeHostCA::performScheduledLayerFlush()
+{
+    {
+        RefPtr<LayerTreeHostCA> protect(this);
+        m_webPage->layoutIfNeeded();
+
+        if (!m_isValid)
+            return;
+    }
+
+    if (!flushPendingLayerChanges())
+        return;
+
+    didPerformScheduledLayerFlush();
+}
+
+void LayerTreeHostCA::didPerformScheduledLayerFlush()
+{
+    platformDidPerformScheduledLayerFlush();
+
+    if (m_notifyAfterScheduledLayerFlush) {
+        // Let the drawing area know that we've done a flush of the layer changes.
+        static_cast<DrawingAreaImpl*>(m_webPage->drawingArea())->layerHostDidFlushLayers();
+        m_notifyAfterScheduledLayerFlush = false;
+    }
+}
+
+bool LayerTreeHostCA::flushPendingLayerChanges()
+{
+    m_rootLayer->syncCompositingStateForThisLayerOnly();
+    m_nonCompositedContentLayer->syncCompositingStateForThisLayerOnly();
+    if (m_pageOverlayLayer)
+        m_pageOverlayLayer->syncCompositingStateForThisLayerOnly();
+
+    return m_webPage->corePage()->mainFrame()->view()->syncCompositingStateIncludingSubframes();
+}
+
+void LayerTreeHostCA::createPageOverlayLayer()
+{
+    ASSERT(!m_pageOverlayLayer);
+
+    m_pageOverlayLayer = GraphicsLayer::create(this);
+#ifndef NDEBUG
+    m_pageOverlayLayer->setName("LayerTreeHost page overlay content");
+#endif
+
+    m_pageOverlayLayer->setDrawsContent(true);
+    m_pageOverlayLayer->setSize(m_webPage->size());
+
+    m_rootLayer->addChild(m_pageOverlayLayer.get());
+}
+
+void LayerTreeHostCA::destroyPageOverlayLayer()
+{
+    ASSERT(m_pageOverlayLayer);
+    m_pageOverlayLayer->removeFromParent();
+    m_pageOverlayLayer = nullptr;
+}
+
+} // namespace WebKit