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34 #include <wtf/Noncopyable.h>
44 TilingData(int maxTextureSize, int totalSizeX, int totalSizeY, bool hasBorderTexels);
45 void setTotalSize(int totalSizeX, int totalSizeY);
46 void setMaxTextureSize(int);
47 int maxTextureSize() const { return m_maxTextureSize; }
48 int totalSizeX() const { return m_totalSizeX; }
49 int totalSizeY() const { return m_totalSizeY; }
50 int borderTexels() const { return m_borderTexels; }
52 int numTiles() const { return numTilesX() * numTilesY(); }
53 int numTilesX() const { return m_numTilesX; }
54 int numTilesY() const { return m_numTilesY; }
55 int tileIndex(int x, int y) const { return x + y * numTilesX(); }
56 int tileXIndex(int tile) const { assertTile(tile); return tile % numTilesX(); }
57 int tileYIndex(int tile) const { assertTile(tile); return tile / numTilesX(); }
58 int tileXIndexFromSrcCoord(int) const;
59 int tileYIndexFromSrcCoord(int) const;
61 IntRect tileBounds(int tile) const;
62 IntRect tileBoundsWithBorder(int tile) const;
63 FloatRect tileBoundsNormalized(int tile) const;
64 int tilePositionX(int xIndex) const;
65 int tilePositionY(int yIndex) const;
66 int tileSizeX(int xIndex) const;
67 int tileSizeY(int yIndex) const;
68 IntRect overlappedTileIndices(const IntRect& srcRect) const;
69 IntRect overlappedTileIndices(const FloatRect& srcRect) const;
71 // Given a set of source and destination coordinates for a drawing quad
72 // in texel units, returns adjusted data to render just the one tile.
73 void intersectDrawQuad(const FloatRect& srcRect, const FloatRect& dstRect, int tile, FloatRect* newSrc, FloatRect* newDst) const;
75 // Difference between tileBound's and tileBoundWithBorder's location().
76 IntPoint textureOffset(int xIndex, int yIndex) const;
79 TilingData() : m_maxTextureSize(0), m_totalSizeX(0), m_totalSizeY(0) {}
80 void assertTile(int tile) const { ASSERT_UNUSED(tile, tile >= 0 && tile < numTiles()); }
81 void recomputeNumTiles();
86 int m_borderTexels; // 0 or 1
95 #endif // TilingData_h