1 files changed, 171 insertions, 0 deletions
diff --git a/Source/WebKit2/UIProcess/LayerBackedDrawingAreaProxy.cpp b/Source/WebKit2/UIProcess/LayerBackedDrawingAreaProxy.cpp
new file mode 100644
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+++ b/Source/WebKit2/UIProcess/LayerBackedDrawingAreaProxy.cpp
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+/*
+ * Copyright (C) 2010 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.
+ */
+
+#if USE(ACCELERATED_COMPOSITING)
+
+#include "LayerBackedDrawingAreaProxy.h"
+
+#include "DrawingAreaMessageKinds.h"
+#include "DrawingAreaProxyMessageKinds.h"
+#include "MessageID.h"
+#include "WebCoreArgumentCoders.h"
+#include "WebPageProxy.h"
+#include "WebProcessProxy.h"
+
+using namespace WebCore;
+
+namespace WebKit {
+
+PassOwnPtr<LayerBackedDrawingAreaProxy> LayerBackedDrawingAreaProxy::create(PlatformWebView* webView, WebPageProxy* webPageProxy)
+{
+    return adoptPtr(new LayerBackedDrawingAreaProxy(webView, webPageProxy));
+}
+
+LayerBackedDrawingAreaProxy::LayerBackedDrawingAreaProxy(PlatformWebView* webView, WebPageProxy* webPageProxy)
+    : DrawingAreaProxy(DrawingAreaInfo::LayerBacked, webPageProxy)
+    , m_isWaitingForDidSetFrameNotification(false)
+    , m_isVisible(true)
+    , m_webView(webView)
+{
+}
+
+LayerBackedDrawingAreaProxy::~LayerBackedDrawingAreaProxy()
+{
+}
+
+#if !PLATFORM(WIN)
+bool LayerBackedDrawingAreaProxy::paint(const IntRect& rect, PlatformDrawingContext context)
+{
+    return true;
+}
+#endif
+
+void LayerBackedDrawingAreaProxy::sizeDidChange()
+{
+    WebPageProxy* page = this->page();
+    if (!page->isValid())
+        return;
+
+    if (m_size.isEmpty())
+        return;
+
+    m_lastSetViewSize = m_size;
+
+    platformSetSize();
+
+    if (m_isWaitingForDidSetFrameNotification)
+        return;
+
+    m_isWaitingForDidSetFrameNotification = true;
+
+    page->process()->responsivenessTimer()->start();
+    page->process()->send(DrawingAreaLegacyMessage::SetSize, page->pageID(), CoreIPC::In(info().identifier, m_size));
+}
+
+#if !PLATFORM(MAC) && !PLATFORM(WIN)
+void LayerBackedDrawingAreaProxy::platformSetSize()
+{
+}
+#endif
+
+void LayerBackedDrawingAreaProxy::setPageIsVisible(bool isVisible)
+{
+    WebPageProxy* page = this->page();
+
+    if (isVisible == m_isVisible)
+        return;
+    
+    m_isVisible = isVisible;
+    if (!page->isValid())
+        return;
+
+    if (!m_isVisible) {
+        // Tell the web process that it doesn't need to paint anything for now.
+        page->process()->send(DrawingAreaLegacyMessage::SuspendPainting, page->pageID(), CoreIPC::In(info().identifier));
+        return;
+    }
+    
+    // The page is now visible.
+    page->process()->send(DrawingAreaLegacyMessage::ResumePainting, page->pageID(), CoreIPC::In(info().identifier));
+    
+    // FIXME: We should request a full repaint here if needed.
+}
+    
+void LayerBackedDrawingAreaProxy::didSetSize(const IntSize& size)
+{
+    m_isWaitingForDidSetFrameNotification = false;
+
+    if (size != m_lastSetViewSize)
+        setSize(m_lastSetViewSize);
+
+    WebPageProxy* page = this->page();
+    page->process()->responsivenessTimer()->stop();
+}
+
+void LayerBackedDrawingAreaProxy::update()
+{
+    WebPageProxy* page = this->page();
+    page->process()->send(DrawingAreaLegacyMessage::DidUpdate, page->pageID(), CoreIPC::In(info().identifier));
+}
+
+void LayerBackedDrawingAreaProxy::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID messageID, CoreIPC::ArgumentDecoder* arguments)
+{
+    switch (messageID.get<DrawingAreaProxyLegacyMessage::Kind>()) {
+        case DrawingAreaProxyLegacyMessage::Update: {
+            update();
+            break;
+        }
+        case DrawingAreaProxyLegacyMessage::DidSetSize: {
+            IntSize size;
+            if (!arguments->decode(CoreIPC::Out(size)))
+                return;
+            didSetSize(size);
+            break;
+        }
+        default:
+            ASSERT_NOT_REACHED();
+    }
+}
+
+void LayerBackedDrawingAreaProxy::didReceiveSyncMessage(CoreIPC::Connection*, CoreIPC::MessageID messageID, CoreIPC::ArgumentDecoder* arguments, CoreIPC::ArgumentEncoder*)
+{
+    switch (messageID.get<DrawingAreaProxyLegacyMessage::Kind>()) {
+#if USE(ACCELERATED_COMPOSITING)
+        case DrawingAreaProxyLegacyMessage::AttachCompositingContext: {
+            uint32_t contextID;
+            if (!arguments->decode(CoreIPC::Out(contextID)))
+                return;
+            attachCompositingContext(contextID);
+            break;
+        }
+#endif
+        default:
+            ASSERT_NOT_REACHED();
+    }
+}
+
+} // namespace WebKit
+
+#endif // USE(ACCELERATED_COMPOSITING)