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Diffstat (limited to 'Source/WebCore/platform/graphics/ca/win/LayerChangesFlusher.h')
-rw-r--r-- | Source/WebCore/platform/graphics/ca/win/LayerChangesFlusher.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/Source/WebCore/platform/graphics/ca/win/LayerChangesFlusher.h b/Source/WebCore/platform/graphics/ca/win/LayerChangesFlusher.h new file mode 100644 index 0000000..6a98a99 --- /dev/null +++ b/Source/WebCore/platform/graphics/ca/win/LayerChangesFlusher.h @@ -0,0 +1,65 @@ +/* + * 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. + */ + +#ifndef LayerChangesFlusher_h +#define LayerChangesFlusher_h + +#if USE(ACCELERATED_COMPOSITING) + +#include <windows.h> +#include <wtf/HashSet.h> +#include <wtf/Noncopyable.h> + +namespace WebCore { + +class CACFLayerTreeHost; + +class LayerChangesFlusher { + WTF_MAKE_NONCOPYABLE(LayerChangesFlusher); +public: + static LayerChangesFlusher& shared(); + + void flushPendingLayerChangesSoon(CACFLayerTreeHost*); + void cancelPendingFlush(CACFLayerTreeHost*); + +private: + LayerChangesFlusher(); + ~LayerChangesFlusher(); + + static LRESULT CALLBACK hookCallback(int code, WPARAM, LPARAM); + LRESULT hookFired(int code, WPARAM, LPARAM); + void setHook(); + void removeHook(); + + HashSet<CACFLayerTreeHost*> m_hostsWithChangesToFlush; + HHOOK m_hook; + bool m_isCallingHosts; +}; + +} // namespace WebCore + +#endif // USE(ACCELERATED_COMPOSITING) + +#endif // LayerChangesFlusher_h |