Removed ScrollingCoordinator and a bunch of composited scrolling'

sky/engine/core/page/scrolling/ScrollingCoordinator.cpp

Index: sky/engine/core/page/scrolling/ScrollingCoordinator.cpp
diff --git a/sky/engine/core/page/scrolling/ScrollingCoordinator.cpp b/sky/engine/core/page/scrolling/ScrollingCoordinator.cpp
deleted file mode 100644
index 15f80cf7a0cad726c6974b38fb2d7974c5868f5c..0000000000000000000000000000000000000000
--- a/sky/engine/core/page/scrolling/ScrollingCoordinator.cpp
+++ /dev/null
@@ -1,271 +0,0 @@
-/*
- * 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 "core/page/scrolling/ScrollingCoordinator.h"
-
-#include "core/dom/Document.h"
-#include "core/dom/Node.h"
-#include "core/frame/FrameView.h"
-#include "core/frame/LocalFrame.h"
-#include "core/frame/Settings.h"
-#include "core/html/HTMLElement.h"
-#include "core/page/Page.h"
-#include "core/rendering/RenderGeometryMap.h"
-#include "core/rendering/RenderView.h"
-#include "core/rendering/compositing/CompositedLayerMapping.h"
-#include "core/rendering/compositing/RenderLayerCompositor.h"
-#include "platform/RuntimeEnabledFeatures.h"
-#include "platform/TraceEvent.h"
-#include "platform/exported/WebScrollbarImpl.h"
-#include "platform/exported/WebScrollbarThemeGeometryNative.h"
-#include "platform/geometry/Region.h"
-#include "platform/geometry/TransformState.h"
-#include "platform/graphics/GraphicsLayer.h"
-#include "platform/scroll/ScrollAnimator.h"
-#include "platform/scroll/Scrollbar.h"
-#include "public/platform/Platform.h"
-#include "public/platform/WebCompositorSupport.h"
-#include "public/platform/WebScrollbarLayer.h"
-#include "public/platform/WebScrollbarThemeGeometry.h"
-#include "public/platform/WebScrollbarThemePainter.h"
-#include "wtf/text/StringBuilder.h"
-
-using blink::WebLayer;
-using blink::WebLayerPositionConstraint;
-using blink::WebRect;
-using blink::WebScrollbarLayer;
-using blink::WebVector;
-
-namespace {
-
-WebLayer* toWebLayer(blink::GraphicsLayer* layer)
-{
-    return layer ? layer->platformLayer() : 0;
-}
-
-} // namespace
-
-namespace blink {
-
-PassOwnPtr<ScrollingCoordinator> ScrollingCoordinator::create(Page* page)
-{
-    return adoptPtr(new ScrollingCoordinator(page));
-}
-
-ScrollingCoordinator::ScrollingCoordinator(Page* page)
-    : m_page(page)
-{
-}
-
-ScrollingCoordinator::~ScrollingCoordinator()
-{
-}
-
-void ScrollingCoordinator::willDestroyScrollableArea(ScrollableArea* scrollableArea)
-{
-    removeWebScrollbarLayer(scrollableArea, HorizontalScrollbar);
-    removeWebScrollbarLayer(scrollableArea, VerticalScrollbar);
-}
-
-void ScrollingCoordinator::removeWebScrollbarLayer(ScrollableArea* scrollableArea, ScrollbarOrientation orientation)
-{
-    ScrollbarMap& scrollbars = orientation == HorizontalScrollbar ? m_horizontalScrollbars : m_verticalScrollbars;
-    if (OwnPtr<WebScrollbarLayer> scrollbarLayer = scrollbars.take(scrollableArea))
-        GraphicsLayer::unregisterContentsLayer(scrollbarLayer->layer());
-}
-
-static PassOwnPtr<WebScrollbarLayer> createScrollbarLayer(Scrollbar* scrollbar)
-{
-    blink::WebScrollbarThemePainter painter(scrollbar);
-    OwnPtr<blink::WebScrollbarThemeGeometry> geometry(blink::WebScrollbarThemeGeometryNative::create(scrollbar));
-
-    OwnPtr<WebScrollbarLayer> scrollbarLayer = adoptPtr(blink::Platform::current()->compositorSupport()->createScrollbarLayer(new blink::WebScrollbarImpl(scrollbar), painter, geometry.leakPtr()));
-    GraphicsLayer::registerContentsLayer(scrollbarLayer->layer());
-    return scrollbarLayer.release();
-}
-
-PassOwnPtr<WebScrollbarLayer> ScrollingCoordinator::createSolidColorScrollbarLayer(ScrollbarOrientation orientation, int thumbThickness, int trackStart, bool isLeftSideVerticalScrollbar)
-{
-    blink::WebScrollbar::Orientation webOrientation = (orientation == HorizontalScrollbar) ? blink::WebScrollbar::Horizontal : blink::WebScrollbar::Vertical;
-    OwnPtr<WebScrollbarLayer> scrollbarLayer = adoptPtr(blink::Platform::current()->compositorSupport()->createSolidColorScrollbarLayer(webOrientation, thumbThickness, trackStart, isLeftSideVerticalScrollbar));
-    GraphicsLayer::registerContentsLayer(scrollbarLayer->layer());
-    return scrollbarLayer.release();
-}
-
-static void detachScrollbarLayer(GraphicsLayer* scrollbarGraphicsLayer)
-{
-    ASSERT(scrollbarGraphicsLayer);
-
-    scrollbarGraphicsLayer->setContentsToPlatformLayer(0);
-    scrollbarGraphicsLayer->setDrawsContent(true);
-}
-
-static void setupScrollbarLayer(GraphicsLayer* scrollbarGraphicsLayer, WebScrollbarLayer* scrollbarLayer, WebLayer* scrollLayer, WebLayer* containerLayer)
-{
-    ASSERT(scrollbarGraphicsLayer);
-    ASSERT(scrollbarLayer);
-
-    if (!scrollLayer) {
-        detachScrollbarLayer(scrollbarGraphicsLayer);
-        return;
-    }
-    scrollbarLayer->setScrollLayer(scrollLayer);
-    scrollbarLayer->setClipLayer(containerLayer);
-    scrollbarGraphicsLayer->setContentsToPlatformLayer(scrollbarLayer->layer());
-    scrollbarGraphicsLayer->setDrawsContent(false);
-}
-
-WebScrollbarLayer* ScrollingCoordinator::addWebScrollbarLayer(ScrollableArea* scrollableArea, ScrollbarOrientation orientation, PassOwnPtr<blink::WebScrollbarLayer> scrollbarLayer)
-{
-    ScrollbarMap& scrollbars = orientation == HorizontalScrollbar ? m_horizontalScrollbars : m_verticalScrollbars;
-    return scrollbars.add(scrollableArea, scrollbarLayer).storedValue->value.get();
-}
-
-WebScrollbarLayer* ScrollingCoordinator::getWebScrollbarLayer(ScrollableArea* scrollableArea, ScrollbarOrientation orientation)
-{
-    ScrollbarMap& scrollbars = orientation == HorizontalScrollbar ? m_horizontalScrollbars : m_verticalScrollbars;
-    return scrollbars.get(scrollableArea);
-}
-
-void ScrollingCoordinator::scrollableAreaScrollbarLayerDidChange(ScrollableArea* scrollableArea, ScrollbarOrientation orientation)
-{
-    GraphicsLayer* scrollbarGraphicsLayer = orientation == HorizontalScrollbar
-        ? scrollableArea->layerForHorizontalScrollbar()
-        : scrollableArea->layerForVerticalScrollbar();
-
-    if (scrollbarGraphicsLayer) {
-        Scrollbar* scrollbar = orientation == HorizontalScrollbar ? scrollableArea->horizontalScrollbar() : scrollableArea->verticalScrollbar();
-
-        WebScrollbarLayer* scrollbarLayer = getWebScrollbarLayer(scrollableArea, orientation);
-        if (!scrollbarLayer) {
-            Settings* settings = m_page->mainFrame()->settings();
-
-            OwnPtr<WebScrollbarLayer> webScrollbarLayer;
-            if (settings->useSolidColorScrollbars()) {
-                ASSERT(RuntimeEnabledFeatures::overlayScrollbarsEnabled());
-                webScrollbarLayer = createSolidColorScrollbarLayer(orientation, scrollbar->thumbThickness(), scrollbar->trackPosition(), scrollableArea->shouldPlaceVerticalScrollbarOnLeft());
-            } else {
-                webScrollbarLayer = createScrollbarLayer(scrollbar);
-            }
-            scrollbarLayer = addWebScrollbarLayer(scrollableArea, orientation, webScrollbarLayer.release());
-        }
-
-        // Root layer non-overlay scrollbars should be marked opaque to disable
-        // blending.
-        bool isOpaqueScrollbar = !scrollbar->isOverlayScrollbar();
-        scrollbarGraphicsLayer->setContentsOpaque(isOpaqueScrollbar);
-
-        WebLayer* scrollLayer = toWebLayer(scrollableArea->layerForScrolling());
-        WebLayer* containerLayer = toWebLayer(scrollableArea->layerForContainer());
-        setupScrollbarLayer(scrollbarGraphicsLayer, scrollbarLayer, scrollLayer, containerLayer);
-    } else
-        removeWebScrollbarLayer(scrollableArea, orientation);
-}
-
-bool ScrollingCoordinator::scrollableAreaScrollLayerDidChange(ScrollableArea* scrollableArea)
-{
-    GraphicsLayer* scrollLayer = scrollableArea->layerForScrolling();
-
-    if (scrollLayer)
-        scrollLayer->setScrollableArea(scrollableArea);
-
-    WebLayer* webLayer = toWebLayer(scrollableArea->layerForScrolling());
-    WebLayer* containerLayer = toWebLayer(scrollableArea->layerForContainer());
-    if (webLayer) {
-        webLayer->setScrollClipLayer(containerLayer);
-        webLayer->setScrollPosition(IntPoint(scrollableArea->scrollPosition() - scrollableArea->minimumScrollPosition()));
-        webLayer->setBounds(scrollableArea->contentsSize());
-        bool canScrollX = scrollableArea->userInputScrollable(HorizontalScrollbar);
-        bool canScrollY = scrollableArea->userInputScrollable(VerticalScrollbar);
-        webLayer->setUserScrollable(canScrollX, canScrollY);
-    }
-    if (WebScrollbarLayer* scrollbarLayer = getWebScrollbarLayer(scrollableArea, HorizontalScrollbar)) {
-        GraphicsLayer* horizontalScrollbarLayer = scrollableArea->layerForHorizontalScrollbar();
-        if (horizontalScrollbarLayer)
-            setupScrollbarLayer(horizontalScrollbarLayer, scrollbarLayer, webLayer, containerLayer);
-    }
-    if (WebScrollbarLayer* scrollbarLayer = getWebScrollbarLayer(scrollableArea, VerticalScrollbar)) {
-        GraphicsLayer* verticalScrollbarLayer = scrollableArea->layerForVerticalScrollbar();
-        if (verticalScrollbarLayer)
-            setupScrollbarLayer(verticalScrollbarLayer, scrollbarLayer, webLayer, containerLayer);
-    }
-
-    return !!webLayer;
-}
-
-void ScrollingCoordinator::reset()
-{
-    for (ScrollbarMap::iterator it = m_horizontalScrollbars.begin(); it != m_horizontalScrollbars.end(); ++it)
-        GraphicsLayer::unregisterContentsLayer(it->value->layer());
-    for (ScrollbarMap::iterator it = m_verticalScrollbars.begin(); it != m_verticalScrollbars.end(); ++it)
-        GraphicsLayer::unregisterContentsLayer(it->value->layer());
-
-    m_horizontalScrollbars.clear();
-    m_verticalScrollbars.clear();
-    m_layersWithTouchRects.clear();
-}
-
-void ScrollingCoordinator::updateScrollParentForGraphicsLayer(GraphicsLayer* child, RenderLayer* parent)
-{
-    WebLayer* scrollParentWebLayer = 0;
-    if (parent && parent->hasCompositedLayerMapping())
-        scrollParentWebLayer = toWebLayer(parent->compositedLayerMapping()->scrollingContentsLayer());
-
-    child->setScrollParent(scrollParentWebLayer);
-}
-
-void ScrollingCoordinator::updateClipParentForGraphicsLayer(GraphicsLayer* child, RenderLayer* parent)
-{
-    WebLayer* clipParentWebLayer = 0;
-    if (parent && parent->hasCompositedLayerMapping())
-        clipParentWebLayer = toWebLayer(parent->compositedLayerMapping()->parentForSublayers());
-
-    child->setClipParent(clipParentWebLayer);
-}
-
-void ScrollingCoordinator::willDestroyRenderLayer(RenderLayer* layer)
-{
-    m_layersWithTouchRects.remove(layer);
-}
-
-void ScrollingCoordinator::willBeDestroyed()
-{
-    ASSERT(m_page);
-    m_page = 0;
-    for (ScrollbarMap::iterator it = m_horizontalScrollbars.begin(); it != m_horizontalScrollbars.end(); ++it)
-        GraphicsLayer::unregisterContentsLayer(it->value->layer());
-    for (ScrollbarMap::iterator it = m_verticalScrollbars.begin(); it != m_verticalScrollbars.end(); ++it)
-        GraphicsLayer::unregisterContentsLayer(it->value->layer());
-}
-
-bool ScrollingCoordinator::isForMainFrame(ScrollableArea* scrollableArea) const
-{
-    // FIXME(sky): Remove
-    return false;
-}
-
-} // namespace blink