CCLayerTilingData.cpp [plain text]
#include "config.h"
#if USE(ACCELERATED_COMPOSITING)
#include "cc/CCLayerTilingData.h"
using namespace std;
namespace WebCore {
PassOwnPtr<CCLayerTilingData> CCLayerTilingData::create(const IntSize& tileSize, BorderTexelOption border)
{
return adoptPtr(new CCLayerTilingData(tileSize, border));
}
CCLayerTilingData::CCLayerTilingData(const IntSize& tileSize, BorderTexelOption border)
: m_tilingData(max(tileSize.width(), tileSize.height()), 0, 0, border == HasBorderTexels)
{
setTileSize(tileSize);
}
void CCLayerTilingData::setTileSize(const IntSize& size)
{
if (m_tileSize == size)
return;
reset();
m_tileSize = size;
m_tilingData.setMaxTextureSize(max(size.width(), size.height()));
}
void CCLayerTilingData::setBorderTexelOption(BorderTexelOption borderTexelOption)
{
bool borderTexels = borderTexelOption == HasBorderTexels;
if (hasBorderTexels() == borderTexels)
return;
reset();
m_tilingData.setHasBorderTexels(borderTexels);
}
const CCLayerTilingData& CCLayerTilingData::operator=(const CCLayerTilingData& tiler)
{
m_tileSize = tiler.m_tileSize;
m_tilingData = tiler.m_tilingData;
return *this;
}
void CCLayerTilingData::addTile(PassOwnPtr<Tile> tile, int i, int j)
{
ASSERT(!tileAt(i, j));
tile->moveTo(i, j);
m_tiles.add(make_pair(i, j), tile);
}
PassOwnPtr<CCLayerTilingData::Tile> CCLayerTilingData::takeTile(int i, int j)
{
return m_tiles.take(make_pair(i, j));
}
CCLayerTilingData::Tile* CCLayerTilingData::tileAt(int i, int j) const
{
return m_tiles.get(make_pair(i, j));
}
void CCLayerTilingData::reset()
{
m_tiles.clear();
}
void CCLayerTilingData::layerRectToTileIndices(const IntRect& layerRect, int& left, int& top, int& right, int& bottom) const
{
left = m_tilingData.tileXIndexFromSrcCoord(layerRect.x());
top = m_tilingData.tileYIndexFromSrcCoord(layerRect.y());
right = m_tilingData.tileXIndexFromSrcCoord(layerRect.maxX() - 1);
bottom = m_tilingData.tileYIndexFromSrcCoord(layerRect.maxY() - 1);
}
IntRect CCLayerTilingData::tileRect(const Tile* tile) const
{
IntRect tileRect = m_tilingData.tileBoundsWithBorder(tile->i(), tile->j());
tileRect.setSize(m_tileSize);
return tileRect;
}
Region CCLayerTilingData::opaqueRegionInLayerRect(const IntRect& layerRect) const
{
if (layerRect.isEmpty())
return Region();
Region opaqueRegion;
int left, top, right, bottom;
layerRectToTileIndices(layerRect, left, top, right, bottom);
for (int j = top; j <= bottom; ++j) {
for (int i = left; i <= right; ++i) {
Tile* tile = tileAt(i, j);
if (!tile)
continue;
IntRect tileOpaqueRect = intersection(layerRect, tile->opaqueRect());
opaqueRegion.unite(tileOpaqueRect);
}
}
return opaqueRegion;
}
void CCLayerTilingData::setBounds(const IntSize& size)
{
m_tilingData.setTotalSize(size.width(), size.height());
int left, top, right, bottom;
layerRectToTileIndices(IntRect(IntPoint(), size), left, top, right, bottom);
Vector<TileMapKey> invalidTileKeys;
for (TileMap::const_iterator it = m_tiles.begin(); it != m_tiles.end(); ++it) {
if (it->first.first > right || it->first.second > bottom)
invalidTileKeys.append(it->first);
}
for (size_t i = 0; i < invalidTileKeys.size(); ++i)
m_tiles.remove(invalidTileKeys[i]);
}
IntSize CCLayerTilingData::bounds() const
{
return IntSize(m_tilingData.totalSizeX(), m_tilingData.totalSizeY());
}
}
#endif // USE(ACCELERATED_COMPOSITING)