Merge WebKit at r59636: Initial merge by git

Change-Id: I59b289c4e6b18425f06ce41cc9d34c522515de91

1 files changed, 177 insertions, 0 deletions

diff --git a/WebCore/platform/graphics/openvg/TiledImageOpenVG.cpp b/WebCore/platform/graphics/openvg/TiledImageOpenVG.cpp
new file mode 100644
index 0000000..64d94c9
--- /dev/null
+++ b/WebCore/platform/graphics/openvg/TiledImageOpenVG.cpp
@@ -0,0 +1,177 @@
+/*
+ * Copyright (C) Research In Motion Limited 2009-2010. All rights reserved.
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public
+ * License as published by the Free Software Foundation; either
+ * version 2 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Library General Public License for more details.
+ *
+ * You should have received a copy of the GNU Library General Public License
+ * along with this library; see the file COPYING.LIB.  If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ */
+
+#include "config.h"
+#include "TiledImageOpenVG.h"
+
+#include "FloatRect.h"
+#include "IntRect.h"
+#include "VGUtils.h"
+
+namespace WebCore {
+
+TiledImageOpenVG::TiledImageOpenVG(const IntSize& size, const IntSize& tileSize)
+    : SharedResourceOpenVG()
+    , m_size(size)
+    , m_maxTileSize(tileSize)
+    , m_numColumns((m_size.width() - 1) / m_maxTileSize.width() + 1)
+    , m_tiles(((m_size.height() - 1) / m_maxTileSize.height() + 1) * m_numColumns, VG_INVALID_HANDLE)
+{
+}
+
+TiledImageOpenVG::TiledImageOpenVG(const TiledImageOpenVG& other)
+    : SharedResourceOpenVG()
+    , m_size(other.m_size)
+    , m_maxTileSize(other.m_maxTileSize)
+    , m_numColumns(other.m_numColumns)
+    , m_tiles(other.m_tiles)
+{
+    detachTiles();
+}
+
+TiledImageOpenVG& TiledImageOpenVG::operator=(const TiledImageOpenVG& other)
+{
+    if (&other != this) {
+        destroyTiles();
+
+        m_size = other.m_size;
+        m_maxTileSize = other.m_maxTileSize;
+        m_numColumns = other.m_numColumns;
+        m_tiles = other.m_tiles;
+
+        detachTiles();
+    }
+    return *this;
+}
+
+TiledImageOpenVG::~TiledImageOpenVG()
+{
+    destroyTiles();
+}
+
+int TiledImageOpenVG::numTiles() const
+{
+    return m_tiles.size();
+}
+
+int TiledImageOpenVG::numColumns() const
+{
+    return m_numColumns;
+}
+
+int TiledImageOpenVG::numRows() const
+{
+    return m_tiles.size() / m_numColumns;
+}
+
+void TiledImageOpenVG::setTile(int xIndex, int yIndex, VGImage image)
+{
+    ASSERT(xIndex < m_numColumns);
+    int i = (yIndex * m_numColumns) + xIndex;
+    ASSERT(i < m_tiles.size());
+    m_tiles.at(i) = image;
+}
+
+IntRect TiledImageOpenVG::tilesInRect(const FloatRect& rect) const
+{
+    int leftIndex = static_cast<int>(rect.x()) / m_maxTileSize.width();
+    int topIndex = static_cast<int>(rect.y()) / m_maxTileSize.height();
+
+    if (leftIndex < 0)
+        leftIndex = 0;
+    if (topIndex < 0)
+        topIndex = 0;
+
+    // Round rect edges up to get the outer pixel boundaries.
+    int rightIndex = (static_cast<int>(ceil(rect.right())) - 1) / m_maxTileSize.width();
+    int bottomIndex = (static_cast<int>(ceil(rect.bottom())) - 1) / m_maxTileSize.height();
+    int columns = (rightIndex - leftIndex) + 1;
+    int rows = (bottomIndex - topIndex) + 1;
+
+    return IntRect(leftIndex, topIndex,
+        (columns <= m_numColumns) ? columns : m_numColumns,
+        (rows <= (m_tiles.size() / m_numColumns)) ? rows : (m_tiles.size() / m_numColumns));
+}
+
+VGImage TiledImageOpenVG::tile(int xIndex, int yIndex) const
+{
+    ASSERT(xIndex < m_numColumns);
+    int i = (yIndex * m_numColumns) + xIndex;
+    ASSERT(i < m_tiles.size());
+    return m_tiles.at(i);
+}
+
+IntRect TiledImageOpenVG::tileRect(int xIndex, int yIndex) const
+{
+    ASSERT(xIndex < m_numColumns);
+    ASSERT((yIndex * m_numColumns) + xIndex < m_tiles.size());
+
+    int x = xIndex * m_maxTileSize.width();
+    int y = yIndex * m_maxTileSize.height();
+
+    return IntRect(x, y,
+        ((m_maxTileSize.width() < m_size.width() - x) ? m_maxTileSize.width() : (m_size.width() - x)),
+        ((m_maxTileSize.height() < m_size.height() - y) ? m_maxTileSize.height() : (m_size.height() - y)));
+}
+
+void TiledImageOpenVG::detachTiles()
+{
+    makeSharedContextCurrent(); // because we create new images
+
+    int numTiles = m_tiles.size();
+    VGImage newTile, originalTile;
+
+    for (int i = 0; i < numTiles; ++i) {
+        originalTile = m_tiles.at(i);
+
+        if (originalTile == VG_INVALID_HANDLE)
+            continue;
+
+        VGImageFormat format = (VGImageFormat) vgGetParameteri(originalTile, VG_IMAGE_FORMAT);
+        VGint width = vgGetParameteri(originalTile, VG_IMAGE_WIDTH);
+        VGint height = vgGetParameteri(originalTile, VG_IMAGE_HEIGHT);
+        ASSERT_VG_NO_ERROR();
+
+        newTile = vgCreateImage(format, width, height, VG_IMAGE_QUALITY_FASTER);
+        ASSERT_VG_NO_ERROR();
+
+        vgCopyImage(newTile, 0, 0, originalTile, 0, 0, width, height, VG_FALSE /* dither */);
+        ASSERT_VG_NO_ERROR();
+
+        m_tiles.at(i) = newTile;
+    }
+}
+
+void TiledImageOpenVG::destroyTiles()
+{
+    makeCompatibleContextCurrent();
+
+    Vector<VGImage>::const_iterator it = m_tiles.begin();
+    Vector<VGImage>::const_iterator end = m_tiles.end();
+
+    for (; it != end; ++it) {
+        if (*it != VG_INVALID_HANDLE)
+            vgDestroyImage(*it);
+    }
+    ASSERT_VG_NO_ERROR();
+
+    m_tiles.fill(VG_INVALID_HANDLE);
+}
+
+}