1/* 2 Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies) 3 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. 8 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. 13 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. 18 */ 19 20#include "config.h" 21 22#if USE(TEXTURE_MAPPER) 23#include "TextureMapperBackingStore.h" 24 25#include "GraphicsLayer.h" 26#include "ImageBuffer.h" 27#include "TextureMapper.h" 28 29#if USE(GRAPHICS_SURFACE) 30#include "GraphicsSurface.h" 31#include "TextureMapperGL.h" 32#endif 33 34namespace WebCore { 35 36unsigned TextureMapperBackingStore::calculateExposedTileEdges(const FloatRect& totalRect, const FloatRect& tileRect) 37{ 38 unsigned exposedEdges = TextureMapper::NoEdges; 39 if (!tileRect.x()) 40 exposedEdges |= TextureMapper::LeftEdge; 41 if (!tileRect.y()) 42 exposedEdges |= TextureMapper::TopEdge; 43 if (tileRect.width() + tileRect.x() >= totalRect.width()) 44 exposedEdges |= TextureMapper::RightEdge; 45 if (tileRect.height() + tileRect.y() >= totalRect.height()) 46 exposedEdges |= TextureMapper::BottomEdge; 47 return exposedEdges; 48} 49 50} 51#endif 52