void TiledBackingStore::invalidate(const IntRect& contentsDirtyRect)
{
IntRect dirtyRect(mapFromContents(contentsDirtyRect));
IntRect keepRectFitToTileSize = tileRectForCoordinate(tileCoordinateForPoint(m_keepRect.location()));
keepRectFitToTileSize.unite(tileRectForCoordinate(tileCoordinateForPoint(innerBottomRight(m_keepRect))));
// Only iterate on the part of the rect that we know we might have tiles.
IntRect coveredDirtyRect = intersection(dirtyRect, keepRectFitToTileSize);
Tile::Coordinate topLeft = tileCoordinateForPoint(coveredDirtyRect.location());
Tile::Coordinate bottomRight = tileCoordinateForPoint(innerBottomRight(coveredDirtyRect));
for (int yCoordinate = topLeft.y(); yCoordinate <= bottomRight.y(); ++yCoordinate) {
for (int xCoordinate = topLeft.x(); xCoordinate <= bottomRight.x(); ++xCoordinate) {
RefPtr<Tile> currentTile = tileAt(Tile::Coordinate(xCoordinate, yCoordinate));
if (!currentTile)
continue;
// Pass the full rect to each tile as coveredDirtyRect might not
// contain them completely and we don't want partial tile redraws.
#if PLATFORM(JS)
fprintf(stderr, "WebKit: TiledBackingStore: invalidate: invalidating currentTile (x,y,w,h): %i %i %i %i\n",dirtyRect.x(),dirtyRect.y(),dirtyRect.width(),dirtyRect.height());
#endif
currentTile->invalidate(dirtyRect);
}
}
startTileBufferUpdateTimer();
}
void TiledBackingStore::paint(GraphicsContext* context, const IntRect& rect)
{
context->save();
// Assumes the backing store is painted with the scale transform applied.
// Since tile content is already scaled, first revert the scaling from the painter.
context->scale(FloatSize(1.f / m_contentsScale, 1.f / m_contentsScale));
IntRect dirtyRect = mapFromContents(rect);
Tile::Coordinate topLeft = tileCoordinateForPoint(dirtyRect.location());
Tile::Coordinate bottomRight = tileCoordinateForPoint(innerBottomRight(dirtyRect));
for (unsigned yCoordinate = topLeft.y(); yCoordinate <= bottomRight.y(); ++yCoordinate) {
for (unsigned xCoordinate = topLeft.x(); xCoordinate <= bottomRight.x(); ++xCoordinate) {
Tile::Coordinate currentCoordinate(xCoordinate, yCoordinate);
RefPtr<Tile> currentTile = tileAt(currentCoordinate);
if (currentTile && currentTile->isReadyToPaint())
currentTile->paint(context, dirtyRect);
else {
IntRect tileRect = tileRectForCoordinate(currentCoordinate);
IntRect target = intersection(tileRect, dirtyRect);
if (target.isEmpty())
continue;
m_backend->paintCheckerPattern(context, FloatRect(target));
}
}
}
context->restore();
}
double TiledBackingStore::tileDistance(const IntRect& viewport, const Tile::Coordinate& tileCoordinate) const
{
if (viewport.intersects(tileRectForCoordinate(tileCoordinate)))
return 0;
IntPoint viewCenter = viewport.location() + IntSize(viewport.width() / 2, viewport.height() / 2);
Tile::Coordinate centerCoordinate = tileCoordinateForPoint(viewCenter);
return std::max(abs(centerCoordinate.y() - tileCoordinate.y()), abs(centerCoordinate.x() - tileCoordinate.x()));
}
double TiledBackingStore::tileDistance(const IntRect& viewport, const Tile::Coordinate& tileCoordinate) const
{
if (viewport.intersects(tileRectForCoordinate(tileCoordinate)))
return 0;
IntPoint viewCenter = viewport.location() + IntSize(viewport.width() / 2, viewport.height() / 2);
Tile::Coordinate centerCoordinate = tileCoordinateForPoint(viewCenter);
// Manhattan distance, biased so that vertical distances are shorter.
const double horizontalBias = 1.3;
return abs(centerCoordinate.y() - tileCoordinate.y()) + horizontalBias * abs(centerCoordinate.x() - tileCoordinate.x());
}
void TiledBackingStore::dropOverhangingTiles()
{
IntRect contentsRect = this->contentsRect();
Vector<Tile::Coordinate> tilesToRemove;
TileMap::iterator end = m_tiles.end();
for (TileMap::iterator it = m_tiles.begin(); it != end; ++it) {
Tile::Coordinate tileCoordinate = it->second->coordinate();
IntRect tileRect = it->second->rect();
IntRect expectedTileRect = tileRectForCoordinate(tileCoordinate);
if (expectedTileRect != tileRect || !contentsRect.contains(tileRect))
tilesToRemove.append(tileCoordinate);
}
unsigned removeCount = tilesToRemove.size();
for (unsigned n = 0; n < removeCount; ++n)
removeTile(tilesToRemove[n]);
}
void TiledDrawingAreaProxy::paint(const IntRect& rect, PlatformDrawingContext context)
{
if (m_isWaitingForDidSetFrameNotification) {
WebPageProxy* page = this->page();
if (!page->isValid())
return;
if (page->process()->isLaunching())
return;
}
adjustVisibleRect();
GraphicsContext gc(context);
gc.save();
// Assumes the backing store is painted with the scale transform applied.
// Since tile content is already scaled, first revert the scaling from the painter.
gc.scale(FloatSize(1 / m_contentsScale, 1 / m_contentsScale));
IntRect dirtyRect = mapFromContents(rect);
TiledDrawingAreaTile::Coordinate topLeft = tileCoordinateForPoint(dirtyRect.topLeft());
TiledDrawingAreaTile::Coordinate bottomRight = tileCoordinateForPoint(dirtyRect.bottomRight());
for (unsigned yCoordinate = topLeft.y(); yCoordinate <= bottomRight.y(); ++yCoordinate) {
for (unsigned xCoordinate = topLeft.x(); xCoordinate <= bottomRight.x(); ++xCoordinate) {
TiledDrawingAreaTile::Coordinate currentCoordinate(xCoordinate, yCoordinate);
RefPtr<TiledDrawingAreaTile> currentTile = tileAt(currentCoordinate);
if (currentTile && currentTile->isReadyToPaint())
currentTile->paint(&gc, dirtyRect);
else {
IntRect tileRect = tileRectForCoordinate(currentCoordinate);
IntRect target = intersection(tileRect, dirtyRect);
if (target.isEmpty())
continue;
TiledDrawingAreaTile::paintCheckerPattern(&gc, FloatRect(target));
}
}
}
gc.restore();
}
bool TiledBackingStore::resizeEdgeTiles()
{
bool wasResized = false;
Vector<Tile::Coordinate> tilesToRemove;
TileMap::iterator end = m_tiles.end();
for (TileMap::iterator it = m_tiles.begin(); it != end; ++it) {
Tile::Coordinate tileCoordinate = it->second->coordinate();
IntRect tileRect = it->second->rect();
IntRect expectedTileRect = tileRectForCoordinate(tileCoordinate);
if (expectedTileRect.isEmpty())
tilesToRemove.append(tileCoordinate);
else if (expectedTileRect != tileRect) {
it->second->resize(expectedTileRect.size());
wasResized = true;
}
}
unsigned removeCount = tilesToRemove.size();
for (unsigned n = 0; n < removeCount; ++n)
removeTile(tilesToRemove[n]);
return wasResized;
}