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/*
* Copyright (C) 2011 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. ``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 COMPUTER, INC. OR
* 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 "WKCACFViewLayerTreeHost.h"
#if USE(ACCELERATED_COMPOSITING)
#include "PlatformCALayer.h"
#include "SoftLinking.h"
#include <wtf/CurrentTime.h>
#include <wtf/Threading.h>
typedef struct _CACFLayer* CACFLayerRef;
namespace WebCore {
#ifdef DEBUG_ALL
SOFT_LINK_DEBUG_LIBRARY(WebKitQuartzCoreAdditions)
#else
SOFT_LINK_LIBRARY(WebKitQuartzCoreAdditions)
#endif
enum WKCACFViewDrawingDestination {
kWKCACFViewDrawingDestinationWindow = 0,
kWKCACFViewDrawingDestinationImage,
};
typedef enum WKCACFViewDrawingDestination WKCACFViewDrawingDestination;
SOFT_LINK(WebKitQuartzCoreAdditions, WKCACFViewCreate, WKCACFViewRef, __cdecl, (WKCACFViewDrawingDestination destination), (destination))
SOFT_LINK(WebKitQuartzCoreAdditions, WKCACFViewSetLayer, void, __cdecl, (WKCACFViewRef view, CACFLayerRef layer), (view, layer))
SOFT_LINK(WebKitQuartzCoreAdditions, WKCACFViewUpdate, void, __cdecl, (WKCACFViewRef view, HWND window, const CGRect* bounds), (view, window, bounds))
SOFT_LINK(WebKitQuartzCoreAdditions, WKCACFViewCanDraw, bool, __cdecl, (WKCACFViewRef view), (view))
SOFT_LINK(WebKitQuartzCoreAdditions, WKCACFViewDraw, void, __cdecl, (WKCACFViewRef view), (view))
SOFT_LINK(WebKitQuartzCoreAdditions, WKCACFViewFlushContext, void, __cdecl, (WKCACFViewRef view), (view))
SOFT_LINK(WebKitQuartzCoreAdditions, WKCACFViewInvalidateRects, void, __cdecl, (WKCACFViewRef view, const CGRect rects[], size_t count), (view, rects, count))
typedef void (*WKCACFViewContextDidChangeCallback)(WKCACFViewRef view, void* info);
SOFT_LINK(WebKitQuartzCoreAdditions, WKCACFViewSetContextDidChangeCallback, void, __cdecl, (WKCACFViewRef view, WKCACFViewContextDidChangeCallback callback, void* info), (view, callback, info))
SOFT_LINK(WebKitQuartzCoreAdditions, WKCACFViewGetLastCommitTime, CFTimeInterval, __cdecl, (WKCACFViewRef view), (view))
SOFT_LINK(WebKitQuartzCoreAdditions, WKCACFViewSetContextUserData, void, __cdecl, (WKCACFViewRef view, void* userData), (view, userData))
PassRefPtr<WKCACFViewLayerTreeHost> WKCACFViewLayerTreeHost::create()
{
if (!WebKitQuartzCoreAdditionsLibrary())
return 0;
return adoptRef(new WKCACFViewLayerTreeHost);
}
WKCACFViewLayerTreeHost::WKCACFViewLayerTreeHost()
: m_view(AdoptCF, WKCACFViewCreate(kWKCACFViewDrawingDestinationWindow))
, m_viewNeedsUpdate(true)
{
}
void WKCACFViewLayerTreeHost::updateViewIfNeeded()
{
if (!m_viewNeedsUpdate)
return;
m_viewNeedsUpdate = false;
CGRect layerBounds = rootLayer()->bounds();
CGRect bounds = this->bounds();
WKCACFViewUpdate(m_view.get(), window(), &bounds);
if (CGRectEqualToRect(layerBounds, rootLayer()->bounds()))
return;
// Flush the context so the layer's rendered bounds will match our bounds.
flushContext();
}
void WKCACFViewLayerTreeHost::contextDidChangeCallback(WKCACFViewRef view, void* info)
{
ASSERT_ARG(view, view);
ASSERT_ARG(info, info);
WKCACFViewLayerTreeHost* host = static_cast<WKCACFViewLayerTreeHost*>(info);
ASSERT_ARG(view, view == host->m_view);
host->contextDidChange();
}
void WKCACFViewLayerTreeHost::contextDidChange()
{
// This should only be called on a background thread when no changes have actually
// been committed to the context, eg. when a video frame has been added to an image
// queue, so return without triggering animations etc.
if (!isMainThread())
return;
// Tell the WKCACFView to start rendering now that we have some contents to render.
updateViewIfNeeded();
CACFLayerTreeHost::contextDidChange();
}
void WKCACFViewLayerTreeHost::initializeContext(void* userData, PlatformCALayer* layer)
{
WKCACFViewSetContextUserData(m_view.get(), userData);
WKCACFViewSetLayer(m_view.get(), layer->platformLayer());
WKCACFViewSetContextDidChangeCallback(m_view.get(), contextDidChangeCallback, this);
}
void WKCACFViewLayerTreeHost::resize()
{
m_viewNeedsUpdate = true;
}
bool WKCACFViewLayerTreeHost::createRenderer()
{
updateViewIfNeeded();
return WKCACFViewCanDraw(m_view.get());
}
void WKCACFViewLayerTreeHost::destroyRenderer()
{
m_viewNeedsUpdate = true;
WKCACFViewUpdate(m_view.get(), 0, 0);
WKCACFViewSetContextUserData(m_view.get(), 0);
WKCACFViewSetLayer(m_view.get(), 0);
WKCACFViewSetContextDidChangeCallback(m_view.get(), 0, 0);
CACFLayerTreeHost::destroyRenderer();
}
CFTimeInterval WKCACFViewLayerTreeHost::lastCommitTime() const
{
return WKCACFViewGetLastCommitTime(m_view.get());
}
void WKCACFViewLayerTreeHost::flushContext()
{
WKCACFViewFlushContext(m_view.get());
}
void WKCACFViewLayerTreeHost::paint()
{
updateViewIfNeeded();
CACFLayerTreeHost::paint();
}
void WKCACFViewLayerTreeHost::render(const Vector<CGRect>& dirtyRects)
{
WKCACFViewInvalidateRects(m_view.get(), dirtyRects.data(), dirtyRects.size());
WKCACFViewDraw(m_view.get());
}
} // namespace WebCore
#endif // USE(ACCELERATED_COMPOSITING)
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