Initial import attempt, just to play with. Many things disabled/removed

ui/cc/TilingData.h

+/*
+ * 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