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/*
* Copyright (C) 2010 Apple Inc. All rights reserved.
* Portions Copyright (c) 2010 Motorola Mobility, 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 "ChunkedUpdateDrawingAreaProxy.h"
#include "DrawingAreaMessageKinds.h"
#include "DrawingAreaProxyMessageKinds.h"
#include "MessageID.h"
#include "UpdateChunk.h"
#include "WebCoreArgumentCoders.h"
#include "WebPageProxy.h"
#include "WebProcessProxy.h"
using namespace WebCore;
namespace WebKit {
PassOwnPtr<ChunkedUpdateDrawingAreaProxy> ChunkedUpdateDrawingAreaProxy::create(PlatformWebView* webView, WebPageProxy* webPageProxy)
{
return adoptPtr(new ChunkedUpdateDrawingAreaProxy(webView, webPageProxy));
}
ChunkedUpdateDrawingAreaProxy::ChunkedUpdateDrawingAreaProxy(PlatformWebView* webView, WebPageProxy* webPageProxy)
: DrawingAreaProxy(DrawingAreaInfo::ChunkedUpdate, webPageProxy)
, m_isWaitingForDidSetFrameNotification(false)
, m_isVisible(true)
, m_forceRepaintWhenResumingPainting(false)
#if PLATFORM(GTK)
, m_backingStoreImage(0)
#endif
, m_webView(webView)
{
}
ChunkedUpdateDrawingAreaProxy::~ChunkedUpdateDrawingAreaProxy()
{
}
bool ChunkedUpdateDrawingAreaProxy::paint(const IntRect& rect, PlatformDrawingContext context)
{
if (m_isWaitingForDidSetFrameNotification) {
WebPageProxy* page = this->page();
if (!page->isValid())
return false;
if (page->process()->isLaunching())
return false;
OwnPtr<CoreIPC::ArgumentDecoder> arguments = page->process()->connection()->deprecatedWaitFor(DrawingAreaProxyLegacyMessage::DidSetSize, page->pageID(), 0.04);
if (arguments)
didReceiveMessage(page->process()->connection(), CoreIPC::MessageID(DrawingAreaProxyLegacyMessage::DidSetSize), arguments.get());
}
return platformPaint(rect, context);
}
void ChunkedUpdateDrawingAreaProxy::sizeDidChange()
{
sendSetSize();
}
void ChunkedUpdateDrawingAreaProxy::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()->deprecatedSend(DrawingAreaLegacyMessage::SuspendPainting, page->pageID(), CoreIPC::In(info().identifier));
return;
}
// The page is now visible, resume painting.
page->process()->deprecatedSend(DrawingAreaLegacyMessage::ResumePainting, page->pageID(), CoreIPC::In(info().identifier, m_forceRepaintWhenResumingPainting));
m_forceRepaintWhenResumingPainting = false;
}
void ChunkedUpdateDrawingAreaProxy::didSetSize(UpdateChunk* updateChunk)
{
ASSERT(m_isWaitingForDidSetFrameNotification);
m_isWaitingForDidSetFrameNotification = false;
IntSize viewSize = updateChunk->rect().size();
if (viewSize != m_size)
sendSetSize();
invalidateBackingStore();
if (!updateChunk->isEmpty())
drawUpdateChunkIntoBackingStore(updateChunk);
}
void ChunkedUpdateDrawingAreaProxy::update(UpdateChunk* updateChunk)
{
if (!m_isVisible) {
// We got an update request that must have been sent before we told the web process to suspend painting.
// Don't paint this into the backing store, because that could leave the backing store in an inconsistent state.
// Instead, we will just tell the drawing area to repaint everything when we resume painting.
m_forceRepaintWhenResumingPainting = true;
} else {
// Just paint into backing store.
drawUpdateChunkIntoBackingStore(updateChunk);
}
WebPageProxy* page = this->page();
page->process()->deprecatedSend(DrawingAreaLegacyMessage::DidUpdate, page->pageID(), CoreIPC::In(info().identifier));
}
void ChunkedUpdateDrawingAreaProxy::sendSetSize()
{
if (!m_webPageProxy->isValid())
return;
if (m_isWaitingForDidSetFrameNotification)
return;
m_isWaitingForDidSetFrameNotification = true;
m_webPageProxy->process()->deprecatedSend(DrawingAreaLegacyMessage::SetSize, m_webPageProxy->pageID(), CoreIPC::In(info().identifier, m_size));
}
void ChunkedUpdateDrawingAreaProxy::didReceiveMessage(CoreIPC::Connection*, CoreIPC::MessageID messageID, CoreIPC::ArgumentDecoder* arguments)
{
switch (messageID.get<DrawingAreaProxyLegacyMessage::Kind>()) {
case DrawingAreaProxyLegacyMessage::Update: {
UpdateChunk updateChunk;
if (!arguments->decode(updateChunk))
return;
update(&updateChunk);
break;
}
case DrawingAreaProxyLegacyMessage::DidSetSize: {
UpdateChunk updateChunk;
if (!arguments->decode(CoreIPC::Out(updateChunk)))
return;
didSetSize(&updateChunk);
break;
}
default:
ASSERT_NOT_REACHED();
}
}
} // namespace WebKit
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