2 Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies)
4 This library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public
6 License as published by the Free Software Foundation; either
7 version 2 of the License, or (at your option) any later version.
9 This library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public License
15 along with this library; see the file COPYING.LIB. If not, write to
16 the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
17 Boston, MA 02110-1301, USA.
23 #include "ShareableSurface.h"
25 #if USE(UI_SIDE_COMPOSITING)
27 class GraphicsContext;
35 UpdateAtlas(int dimension, ShareableBitmap::Flags);
37 inline WebCore::IntSize size() const { return m_surface->size(); }
39 // Returns a null pointer of there is no available buffer.
40 PassOwnPtr<WebCore::GraphicsContext> beginPaintingOnAvailableBuffer(ShareableSurface::Handle&, const WebCore::IntSize&, WebCore::IntPoint& offset);
41 void didSwapBuffers();
42 ShareableBitmap::Flags flags() const { return m_flags; }
43 bool supportsAlpha() const { return flags() & ShareableBitmap::SupportsAlpha; }
45 void addTimeInactive(double seconds)
48 m_inactivityInSeconds += seconds;
50 bool isInactive() const
52 const double inactiveSecondsTolerance = 3;
53 return m_inactivityInSeconds > inactiveSecondsTolerance;
55 bool isInUse() const { return m_using; }
58 void buildLayoutIfNeeded();
59 WebCore::IntPoint offsetForIndex(int) const;
60 int findAvailableIndex(const WebCore::IntSize&);
68 Vector<State> m_bufferStates;
70 ShareableBitmap::Flags m_flags;
71 RefPtr<ShareableSurface> m_surface;
72 double m_inactivityInSeconds;
78 #endif // UpdateAtlas_h