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);
}
}
gc.restore();
}
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.topLeft());
Tile::Coordinate bottomRight = tileCoordinateForPoint(dirtyRect.bottomRight());
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;
Tile::paintCheckerPattern(context, FloatRect(target));
}
}
}
context->restore();
}
void PlatformScrollbar::paintRectWithBorder(GraphicsContext* context, const IntRect& rect, const Color& innerColor, const Color& outerColor) const
{
context->drawRect(rect);
context->fillRect(rect, Color::gray);
Color tmp = context->strokeColor();
context->setStrokeColor(Color::lightGray);
context->drawLine( rect.topLeft(), rect.topRight() );
context->drawLine( rect.topLeft(), rect.bottomLeft() );
context->drawLine( rect.topRight(), rect.bottomRight() );
context->drawLine( rect.bottomLeft(), rect.bottomRight() );
IntRect inner( rect.x()+1, rect.y()+1, rect.width()-2, rect.height()-2 );
context->setStrokeColor(Color::darkGray);
context->drawLine( inner.topLeft(), inner.topRight() );
context->drawLine( inner.topLeft(), inner.bottomLeft() );
context->drawLine( inner.topRight(), inner.bottomRight() );
context->drawLine( inner.bottomLeft(), inner.bottomRight() );
context->setStrokeColor(tmp);
}
void TiledDrawingAreaProxy::createTiles()
{
IntRect visibleRect = mapFromContents(webViewVisibleRect());
m_previousVisibleRect = visibleRect;
if (visibleRect.isEmpty())
return;
// Resize tiles on edges in case the contents size has changed.
bool didResizeTiles = resizeEdgeTiles();
// Remove tiles outside out current maximum keep rect.
dropTilesOutsideRect(calculateKeepRect(visibleRect));
// Cover the cover rect with tiles.
IntRect coverRect = calculateCoverRect(visibleRect);
// Search for the tile position closest to the viewport center that does not yet contain a tile.
// Which position is considered the closest depends on the tileDistance function.
double shortestDistance = std::numeric_limits<double>::infinity();
Vector<TiledDrawingAreaTile::Coordinate> tilesToCreate;
unsigned requiredTileCount = 0;
bool hasVisibleCheckers = false;
TiledDrawingAreaTile::Coordinate topLeft = tileCoordinateForPoint(coverRect.topLeft());
TiledDrawingAreaTile::Coordinate bottomRight = tileCoordinateForPoint(coverRect.bottomRight());
for (unsigned yCoordinate = topLeft.y(); yCoordinate <= bottomRight.y(); ++yCoordinate) {
for (unsigned xCoordinate = topLeft.x(); xCoordinate <= bottomRight.x(); ++xCoordinate) {
TiledDrawingAreaTile::Coordinate currentCoordinate(xCoordinate, yCoordinate);
// Distance is 0 for all currently visible tiles.
double distance = tileDistance(visibleRect, currentCoordinate);
RefPtr<TiledDrawingAreaTile> tile = tileAt(currentCoordinate);
if (!distance && (!tile || !tile->isReadyToPaint()))
hasVisibleCheckers = true;
if (tile)
continue;
++requiredTileCount;
if (distance > shortestDistance)
continue;
if (distance < shortestDistance) {
tilesToCreate.clear();
shortestDistance = distance;
}
tilesToCreate.append(currentCoordinate);
}
}
if (hasVisibleCheckers && shortestDistance > 0)
return;
// Now construct the tile(s).
unsigned tilesToCreateCount = tilesToCreate.size();
for (unsigned n = 0; n < tilesToCreateCount; ++n)
createTile(tilesToCreate[n]);
requiredTileCount -= tilesToCreateCount;
// Paint the content of the newly created tiles.
if (tilesToCreateCount || didResizeTiles)
updateTileBuffers();
// Keep creating tiles until the whole coverRect is covered.
if (requiredTileCount)
m_tileCreationTimer.startOneShot(m_tileCreationDelay);
}
void TiledBackingStore::createTiles()
{
if (m_contentsFrozen)
return;
IntRect visibleRect = mapFromContents(m_client->tiledBackingStoreVisibleRect());
m_previousVisibleRect = visibleRect;
if (visibleRect.isEmpty())
return;
// Remove tiles that extend outside the current contents rect.
dropOverhangingTiles();
IntRect keepRect = visibleRect;
keepRect.inflateX(visibleRect.width() * (m_keepAreaMultiplier.width() - 1.f));
keepRect.inflateY(visibleRect.height() * (m_keepAreaMultiplier.height() - 1.f));
keepRect.intersect(contentsRect());
dropTilesOutsideRect(keepRect);
IntRect coverRect = visibleRect;
coverRect.inflateX(visibleRect.width() * (m_coverAreaMultiplier.width() - 1.f));
coverRect.inflateY(visibleRect.height() * (m_coverAreaMultiplier.height() - 1.f));
coverRect.intersect(contentsRect());
// Search for the tile position closest to the viewport center that does not yet contain a tile.
// Which position is considered the closest depends on the tileDistance function.
double shortestDistance = std::numeric_limits<double>::infinity();
Vector<Tile::Coordinate> tilesToCreate;
unsigned requiredTileCount = 0;
Tile::Coordinate topLeft = tileCoordinateForPoint(coverRect.topLeft());
Tile::Coordinate bottomRight = tileCoordinateForPoint(coverRect.bottomRight());
for (unsigned yCoordinate = topLeft.y(); yCoordinate <= bottomRight.y(); ++yCoordinate) {
for (unsigned xCoordinate = topLeft.x(); xCoordinate <= bottomRight.x(); ++xCoordinate) {
Tile::Coordinate currentCoordinate(xCoordinate, yCoordinate);
if (tileAt(currentCoordinate))
continue;
++requiredTileCount;
// Distance is 0 for all currently visible tiles.
double distance = tileDistance(visibleRect, currentCoordinate);
if (distance > shortestDistance)
continue;
if (distance < shortestDistance) {
tilesToCreate.clear();
shortestDistance = distance;
}
tilesToCreate.append(currentCoordinate);
}
}
// Now construct the tile(s)
unsigned tilesToCreateCount = tilesToCreate.size();
for (unsigned n = 0; n < tilesToCreateCount; ++n) {
Tile::Coordinate coordinate = tilesToCreate[n];
setTile(coordinate, Tile::create(this, coordinate));
}
requiredTileCount -= tilesToCreateCount;
// Paint the content of the newly created tiles
if (tilesToCreateCount)
updateTileBuffers();
// Keep creating tiles until the whole coverRect is covered.
if (requiredTileCount)
m_tileCreationTimer->startOneShot(m_tileCreationDelay);
}
