| /* |
| * Copyright (C) 2011 Google 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 GOOGLE 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 GOOGLE 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 "PageOverlay.h" |
| |
| #include "WebPageOverlay.h" |
| #include "WebViewClient.h" |
| #include "WebViewImpl.h" |
| #include "core/page/Page.h" |
| #include "core/page/Settings.h" |
| #include "core/platform/graphics/GraphicsLayer.h" |
| #include "core/platform/graphics/GraphicsLayerClient.h" |
| #include "public/platform/WebLayer.h" |
| |
| using namespace WebCore; |
| |
| namespace WebKit { |
| |
| namespace { |
| |
| WebCanvas* ToWebCanvas(GraphicsContext* gc) |
| { |
| return gc->canvas(); |
| } |
| |
| } // namespace |
| |
| PassOwnPtr<PageOverlay> PageOverlay::create(WebViewImpl* viewImpl, WebPageOverlay* overlay) |
| { |
| return adoptPtr(new PageOverlay(viewImpl, overlay)); |
| } |
| |
| PageOverlay::PageOverlay(WebViewImpl* viewImpl, WebPageOverlay* overlay) |
| : m_viewImpl(viewImpl) |
| , m_overlay(overlay) |
| , m_zOrder(0) |
| { |
| } |
| |
| class OverlayGraphicsLayerClientImpl : public WebCore::GraphicsLayerClient { |
| public: |
| static PassOwnPtr<OverlayGraphicsLayerClientImpl> create(WebPageOverlay* overlay) |
| { |
| return adoptPtr(new OverlayGraphicsLayerClientImpl(overlay)); |
| } |
| |
| virtual ~OverlayGraphicsLayerClientImpl() { } |
| |
| virtual void notifyAnimationStarted(const GraphicsLayer*, double time) { } |
| |
| virtual void paintContents(const GraphicsLayer*, GraphicsContext& gc, GraphicsLayerPaintingPhase, const IntRect& inClip) |
| { |
| gc.save(); |
| m_overlay->paintPageOverlay(ToWebCanvas(&gc)); |
| gc.restore(); |
| } |
| |
| virtual String debugName(const GraphicsLayer* graphicsLayer) OVERRIDE |
| { |
| return String("WebViewImpl Page Overlay Content Layer"); |
| } |
| |
| private: |
| explicit OverlayGraphicsLayerClientImpl(WebPageOverlay* overlay) |
| : m_overlay(overlay) |
| { |
| } |
| |
| WebPageOverlay* m_overlay; |
| }; |
| |
| void PageOverlay::clear() |
| { |
| invalidateWebFrame(); |
| |
| if (m_layer) { |
| m_layer->removeFromParent(); |
| m_layer = nullptr; |
| m_layerClient = nullptr; |
| } |
| } |
| |
| void PageOverlay::update() |
| { |
| invalidateWebFrame(); |
| |
| if (!m_layer) { |
| m_layerClient = OverlayGraphicsLayerClientImpl::create(m_overlay); |
| m_layer = GraphicsLayer::create(m_viewImpl->graphicsLayerFactory(), m_layerClient.get()); |
| m_layer->setDrawsContent(true); |
| |
| // Compositor hit-testing does not know how to deal with layers that may be |
| // transparent to events (see http://crbug.com/269598). So require |
| // scrolling and touches on this layer to go to the main thread. |
| WebLayer* platformLayer = m_layer->platformLayer(); |
| platformLayer->setShouldScrollOnMainThread(true); |
| WebVector<WebRect> webRects(static_cast<size_t>(1)); |
| webRects[0] = WebRect(0, 0, INT_MAX, INT_MAX); |
| platformLayer->setTouchEventHandlerRegion(webRects); |
| } |
| |
| FloatSize size(m_viewImpl->size()); |
| if (size != m_layer->size()) { |
| // Triggers re-adding to root layer to ensure that we are on top of |
| // scrollbars. |
| m_layer->removeFromParent(); |
| m_layer->setSize(size); |
| } |
| |
| m_viewImpl->setOverlayLayer(m_layer.get()); |
| m_layer->setNeedsDisplay(); |
| } |
| |
| void PageOverlay::paintWebFrame(GraphicsContext& gc) |
| { |
| if (!m_viewImpl->isAcceleratedCompositingActive()) { |
| gc.save(); |
| m_overlay->paintPageOverlay(ToWebCanvas(&gc)); |
| gc.restore(); |
| } |
| } |
| |
| void PageOverlay::invalidateWebFrame() |
| { |
| // WebPageOverlay does the actual painting of the overlay. |
| // Here we just make sure to invalidate. |
| if (!m_viewImpl->isAcceleratedCompositingActive()) { |
| // FIXME: able to invalidate a smaller rect. |
| // FIXME: Is it important to just invalidate a smaller rect given that |
| // this is not on a critical codepath? In order to do so, we'd |
| // have to take scrolling into account. |
| const WebSize& size = m_viewImpl->size(); |
| WebRect damagedRect(0, 0, size.width, size.height); |
| if (m_viewImpl->client()) |
| m_viewImpl->client()->didInvalidateRect(damagedRect); |
| } |
| } |
| |
| } // namespace WebKit |