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/*
* 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 APPLE 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 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 "WebLayerTreeViewImpl.h"
#include "CCLayerTreeHost.h"
#include "CCThreadProxy.h"
#include "LayerChromium.h"
#include <public/WebGraphicsContext3D.h>
#include <public/WebLayer.h>
#include <public/WebLayerTreeView.h>
#include <public/WebLayerTreeViewClient.h>
#include <public/WebSize.h>
#include <public/WebThread.h>
using namespace WebCore;
namespace {
// Adapts a pure WebGraphicsContext3D into a WebCompositorOutputSurface until
// downstream code can be updated to produce output surfaces directly.
class WebGraphicsContextToOutputSurfaceAdapter : public WebKit::WebCompositorOutputSurface {
public:
explicit WebGraphicsContextToOutputSurfaceAdapter(PassOwnPtr<WebKit::WebGraphicsContext3D> context)
: m_context3D(context)
, m_client(0)
{
}
virtual bool bindToClient(WebKit::WebCompositorOutputSurfaceClient* client) OVERRIDE
{
ASSERT(client);
if (!m_context3D->makeContextCurrent())
return false;
m_client = client;
return true;
}
virtual const Capabilities& capabilities() const OVERRIDE
{
return m_capabilities;
}
virtual WebKit::WebGraphicsContext3D* context3D() const OVERRIDE
{
return m_context3D.get();
}
virtual void sendFrameToParentCompositor(const WebKit::WebCompositorFrame&) OVERRIDE
{
}
private:
OwnPtr<WebKit::WebGraphicsContext3D> m_context3D;
Capabilities m_capabilities;
WebKit::WebCompositorOutputSurfaceClient* m_client;
};
}
namespace WebKit {
// Converts messages from CCLayerTreeHostClient to WebLayerTreeViewClient.
class WebLayerTreeViewClientAdapter : public WebCore::CCLayerTreeHostClient {
public:
WebLayerTreeViewClientAdapter(WebLayerTreeViewClient* client)
: m_client(client)
, m_usingRealOutputSurface(false)
{
}
virtual ~WebLayerTreeViewClientAdapter() { }
// CCLayerTreeHostClient implementation
virtual void willBeginFrame() OVERRIDE { m_client->willBeginFrame(); }
virtual void didBeginFrame() OVERRIDE { m_client->didBeginFrame(); }
virtual void updateAnimations(double monotonicFrameBeginTime) OVERRIDE { m_client->updateAnimations(monotonicFrameBeginTime); }
virtual void layout() OVERRIDE { m_client->layout(); }
virtual void applyScrollAndScale(const WebCore::IntSize& scrollDelta, float pageScale) OVERRIDE { m_client->applyScrollAndScale(scrollDelta, pageScale); }
virtual PassOwnPtr<WebCompositorOutputSurface> createOutputSurface() OVERRIDE
{
WebCompositorOutputSurface* outputSurface = m_client->createOutputSurface();
if (outputSurface) {
m_usingRealOutputSurface = true;
return adoptPtr(outputSurface);
}
// Temporarily, if the output surface can't be created, create a WebGraphicsContext3D
// directly. This allows bootstrapping the output surface system while downstream
// users of the API still use the old approach.
WebGraphicsContext3D* context = m_client->createContext3D();
if (!context)
return nullptr;
m_usingRealOutputSurface = false;
return adoptPtr(new WebGraphicsContextToOutputSurfaceAdapter(adoptPtr(context)));
}
virtual void didRecreateOutputSurface(bool success) OVERRIDE
{
if (m_usingRealOutputSurface) {
m_client->didRecreateOutputSurface(success);
return;
}
m_client->didRebindGraphicsContext(success);
}
virtual void willCommit() OVERRIDE { m_client->willCommit(); }
virtual void didCommit() OVERRIDE { m_client->didCommit(); }
virtual void didCommitAndDrawFrame() OVERRIDE { m_client->didCommitAndDrawFrame(); }
virtual void didCompleteSwapBuffers() OVERRIDE { m_client->didCompleteSwapBuffers(); }
virtual void scheduleComposite() OVERRIDE { m_client->scheduleComposite(); }
private:
WebLayerTreeViewClient* m_client;
bool m_usingRealOutputSurface;
};
PassOwnPtr<WebLayerTreeViewImpl> WebLayerTreeViewImpl::create(WebLayerTreeViewClient* client, const WebLayer& root, const WebLayerTreeView::Settings& settings)
{
OwnPtr<WebLayerTreeViewImpl> impl = adoptPtr(new WebLayerTreeViewImpl(client, settings));
if (!impl->layerTreeHost())
return nullptr;
impl->layerTreeHost()->setRootLayer(root);
return impl.release();
}
WebLayerTreeViewImpl::WebLayerTreeViewImpl(WebLayerTreeViewClient* client, const WebLayerTreeView::Settings& settings)
: m_clientAdapter(adoptPtr(new WebLayerTreeViewClientAdapter(client)))
, m_layerTreeHost(CCLayerTreeHost::create(m_clientAdapter.get(), settings))
{
}
WebLayerTreeViewImpl::~WebLayerTreeViewImpl()
{
}
} // namespace WebKit
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