/* * Copyright (c) 2010, 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: * * * Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 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. * * Neither the name of Google Inc. nor the names of its * contributors may be used to endorse or promote products derived from * this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT * OWNER 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 TilingData_h #define TilingData_h #include "IntSize.h" #include <wtf/Noncopyable.h> namespace WebCore { class FloatRect; class IntRect; class IntPoint; class TilingData { public: TilingData(const IntSize& maxTextureSize, const IntSize& totalSize, bool hasBorderTexels); void setTotalSize(const IntSize&); const IntSize& totalSize() const { return m_totalSize; } void setMaxTextureSize(const IntSize&); const IntSize& maxTextureSize() const { return m_maxTextureSize; } void setHasBorderTexels(bool); int borderTexels() const { return m_borderTexels; } bool hasEmptyBounds() const { return !numTilesX() || !numTilesY(); } int numTilesX() const { return m_numTilesX; } int numTilesY() const { return m_numTilesY; } int tileXIndexFromSrcCoord(int) const; int tileYIndexFromSrcCoord(int) const; IntRect tileBounds(int, int) const; IntRect tileBoundsWithBorder(int, int) const; int tilePositionX(int xIndex) const; int tilePositionY(int yIndex) const; int tileSizeX(int xIndex) const; int tileSizeY(int yIndex) const; // Difference between tileBound's and tileBoundWithBorder's location(). IntPoint textureOffset(int xIndex, int yIndex) const; private: TilingData() : m_borderTexels(0) { } void assertTile(int i, int j) const { ASSERT_UNUSED(i, i >= 0 && i < numTilesX()); ASSERT_UNUSED(j, j >= 0 && j < numTilesY()); } void recomputeNumTiles(); IntSize m_maxTextureSize; IntSize m_totalSize; int m_borderTexels; // 0 or 1 // computed values: int m_numTilesX; int m_numTilesY; }; } #endif // TilingData_h