1 /* 2 * Copyright (C) 2010 Apple Inc. All rights reserved. 3 * Portions Copyright (c) 2010 Motorola Mobility, Inc. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS'' 15 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, 16 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS 18 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 19 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 20 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 21 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 22 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 23 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF 24 * THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 #include "config.h" 28 #include "ChunkedUpdateDrawingAreaProxy.h" 29 30 #include "DrawingAreaMessageKinds.h" 31 #include "DrawingAreaProxyMessageKinds.h" 32 #include "MessageID.h" 33 #include "UpdateChunk.h" 34 #include "WebCoreArgumentCoders.h" 35 #include "WebPageProxy.h" 36 #include "WebProcessProxy.h" 37 38 using namespace WebCore; 39 40 namespace WebKit { 41 42 PassOwnPtr<ChunkedUpdateDrawingAreaProxy> ChunkedUpdateDrawingAreaProxy::create(PlatformWebView* webView, WebPageProxy* webPageProxy) 43 { 44 return adoptPtr(new ChunkedUpdateDrawingAreaProxy(webView, webPageProxy)); 45 } 46 47 ChunkedUpdateDrawingAreaProxy::ChunkedUpdateDrawingAreaProxy(PlatformWebView* webView, WebPageProxy* webPageProxy) 48 : DrawingAreaProxy(DrawingAreaTypeChunkedUpdate, webPageProxy) 49 , m_isWaitingForDidSetFrameNotification(false) 50 , m_isVisible(true) 51 , m_forceRepaintWhenResumingPainting(false) 52 #if PLATFORM(GTK) 53 , m_backingStoreImage(0) 54 #endif 55 , m_webView(webView) 56 { 57 } 58 59 ChunkedUpdateDrawingAreaProxy::~ChunkedUpdateDrawingAreaProxy() 60 { 61 } 62 63 bool ChunkedUpdateDrawingAreaProxy::paint(const IntRect& rect, PlatformDrawingContext context) 64 { 65 if (m_isWaitingForDidSetFrameNotification) { 66 WebPageProxy* page = this->page(); 67 if (!page->isValid()) 68 return false; 69 70 if (page->process()->isLaunching()) 71 return false; 72 73 OwnPtr<CoreIPC::ArgumentDecoder> arguments = page->process()->connection()->deprecatedWaitFor(DrawingAreaProxyLegacyMessage::DidSetSize, page->pageID(), 0.04); 74 if (arguments) 75 didReceiveMessage(page->process()->connection(), CoreIPC::MessageID(DrawingAreaProxyLegacyMessage::DidSetSize), arguments.get()); 76 } 77 78 return platformPaint(rect, context); 79 } 80 81 void ChunkedUpdateDrawingAreaProxy::sizeDidChange() 82 { 83 sendSetSize(); 84 } 85 86 void ChunkedUpdateDrawingAreaProxy::setPageIsVisible(bool isVisible) 87 { 88 WebPageProxy* page = this->page(); 89 90 if (isVisible == m_isVisible) 91 return; 92 93 m_isVisible = isVisible; 94 if (!page->isValid()) 95 return; 96 97 if (!m_isVisible) { 98 // Tell the web process that it doesn't need to paint anything for now. 99 page->process()->deprecatedSend(DrawingAreaLegacyMessage::SuspendPainting, page->pageID(), CoreIPC::In()); 100 return; 101 } 102 103 // The page is now visible, resume painting. 104 page->process()->deprecatedSend(DrawingAreaLegacyMessage::ResumePainting, page->pageID(), CoreIPC::In(m_forceRepaintWhenResumingPainting)); 105 m_forceRepaintWhenResumingPainting = false; 106 } 107 108 void ChunkedUpdateDrawingAreaProxy::didSetSize(UpdateChunk* updateChunk) 109 { 110 ASSERT(m_isWaitingForDidSetFrameNotification); 111 m_isWaitingForDidSetFrameNotification = false; 112 113 IntSize viewSize = updateChunk->rect().size(); 114 115 if (viewSize != m_size) 116 sendSetSize(); 117 118 invalidateBackingStore(); 119 if (!updateChunk->isEmpty()) 120 drawUpdateChunkIntoBackingStore(updateChunk); 121 } 122 123 void ChunkedUpdateDrawingAreaProxy::deprecatedUpdate(UpdateChunk* updateChunk) 124 { 125 if (!m_isVisible) { 126 // We got an update request that must have been sent before we told the web process to suspend painting. 127 // Don't paint this into the backing store, because that could leave the backing store in an inconsistent state. 128 // Instead, we will just tell the drawing area to repaint everything when we resume painting. 129 m_forceRepaintWhenResumingPainting = true; 130 } else { 131 // Just paint into backing store. 132 drawUpdateChunkIntoBackingStore(updateChunk); 133 } 134 135 WebPageProxy* page = this->page(); 136 page->process()->deprecatedSend(DrawingAreaLegacyMessage::DidUpdate, page->pageID(), CoreIPC::In()); 137 } 138 139 void ChunkedUpdateDrawingAreaProxy::sendSetSize() 140 { 141 if (!m_webPageProxy->isValid()) 142 return; 143 144 if (m_isWaitingForDidSetFrameNotification) 145 return; 146 m_isWaitingForDidSetFrameNotification = true; 147 148 m_webPageProxy->process()->deprecatedSend(DrawingAreaLegacyMessage::SetSize, m_webPageProxy->pageID(), CoreIPC::In(m_size)); 149 } 150 151 void ChunkedUpdateDrawingAreaProxy::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID messageID, CoreIPC::ArgumentDecoder* arguments) 152 { 153 switch (messageID.get<DrawingAreaProxyLegacyMessage::Kind>()) { 154 case DrawingAreaProxyLegacyMessage::Update: { 155 UpdateChunk updateChunk; 156 if (!arguments->decode(updateChunk)) 157 return; 158 159 deprecatedUpdate(&updateChunk); 160 break; 161 } 162 case DrawingAreaProxyLegacyMessage::DidSetSize: { 163 UpdateChunk updateChunk; 164 if (!arguments->decode(CoreIPC::Out(updateChunk))) 165 return; 166 167 didSetSize(&updateChunk); 168 break; 169 } 170 default: 171 ASSERT_NOT_REACHED(); 172 } 173 } 174 175 } // namespace WebKit 176