void DrawingAreaImpl::scroll(const IntRect& scrollRect, const IntSize& scrollDelta)
{
if (!m_isPaintingEnabled)
return;
if (m_layerTreeHost) {
ASSERT(m_scrollRect.isEmpty());
ASSERT(m_scrollOffset.isEmpty());
ASSERT(m_dirtyRegion.isEmpty());
m_layerTreeHost->scrollNonCompositedContents(scrollRect);
return;
}
if (m_webPage->mainFrameHasCustomRepresentation())
return;
if (scrollRect.isEmpty())
return;
if (!m_scrollRect.isEmpty() && scrollRect != m_scrollRect) {
unsigned scrollArea = scrollRect.width() * scrollRect.height();
unsigned currentScrollArea = m_scrollRect.width() * m_scrollRect.height();
if (currentScrollArea >= scrollArea) {
// The rect being scrolled is at least as large as the rect we'd like to scroll.
// Go ahead and just invalidate the scroll rect.
setNeedsDisplayInRect(scrollRect);
return;
}
// Just repaint the entire current scroll rect, we'll scroll the new rect instead.
setNeedsDisplayInRect(m_scrollRect);
m_scrollRect = IntRect();
m_scrollOffset = IntSize();
}
// Get the part of the dirty region that is in the scroll rect.
Region dirtyRegionInScrollRect = intersect(scrollRect, m_dirtyRegion);
if (!dirtyRegionInScrollRect.isEmpty()) {
// There are parts of the dirty region that are inside the scroll rect.
// We need to subtract them from the region, move them and re-add them.
m_dirtyRegion.subtract(scrollRect);
// Move the dirty parts.
Region movedDirtyRegionInScrollRect = intersect(translate(dirtyRegionInScrollRect, scrollDelta), scrollRect);
// And add them back.
m_dirtyRegion.unite(movedDirtyRegionInScrollRect);
}
// Compute the scroll repaint region.
Region scrollRepaintRegion = subtract(scrollRect, translate(scrollRect, scrollDelta));
m_dirtyRegion.unite(scrollRepaintRegion);
scheduleDisplay();
m_scrollRect = scrollRect;
m_scrollOffset += scrollDelta;
}
void DrawingAreaImpl::setPageOverlayNeedsDisplay(PageOverlay* pageOverlay, const IntRect& rect)
{
if (m_layerTreeHost) {
m_layerTreeHost->setPageOverlayNeedsDisplay(pageOverlay, rect);
return;
}
setNeedsDisplayInRect(rect);
}
void TextureMapperNode::setNeedsDisplay()
{
if (m_effectTarget)
m_effectTarget->setNeedsDisplay();
if (m_transforms.targetBoundingRect.isEmpty())
return;
if (m_state.drawsContent || m_currentContent.contentType != HTMLContentType)
setNeedsDisplayInRect(m_transforms.targetBoundingRect);
}
void DrawingAreaImpl::setNeedsDisplay()
{
if (!m_isPaintingEnabled)
return;
if (m_layerTreeHost) {
ASSERT(m_dirtyRegion.isEmpty());
m_layerTreeHost->setNonCompositedContentsNeedDisplay();
return;
}
setNeedsDisplayInRect(m_webPage->bounds());
}
void GraphicsLayerClutter::setNeedsDisplay()
{
FloatRect hugeRect(FloatPoint(), m_size);
setNeedsDisplayInRect(hugeRect);
}
void WebGraphicsLayer::setNeedsDisplay()
{
setNeedsDisplayInRect(IntRect(IntPoint::zero(), IntSize(size().width(), size().height())));
}
void GraphicsLayerAndroid::setNeedsDisplay()
{
LOG("(%x) setNeedsDisplay()", this);
FloatRect rect(0, 0, m_size.width(), m_size.height());
setNeedsDisplayInRect(rect);
}
void CoordinatedGraphicsLayer::setNeedsDisplay()
{
setNeedsDisplayInRect(FloatRect(FloatPoint(), size()));
}
void TileGrid::revalidateTiles(TileValidationPolicy validationPolicy)
{
FloatRect coverageRect = m_controller.coverageRect();
IntRect bounds = m_controller.bounds();
if (coverageRect.isEmpty() || bounds.isEmpty())
return;
FloatRect scaledRect(coverageRect);
scaledRect.scale(m_scale);
IntRect coverageRectInTileCoords(enclosingIntRect(scaledRect));
TileCohort currCohort = nextTileCohort();
unsigned tilesInCohort = 0;
double minimumRevalidationTimerDuration = std::numeric_limits<double>::max();
bool needsTileRevalidation = false;
// Move tiles newly outside the coverage rect into the cohort map.
for (TileMap::iterator it = m_tiles.begin(), end = m_tiles.end(); it != end; ++it) {
TileInfo& tileInfo = it->value;
TileIndex tileIndex = it->key;
PlatformCALayer* tileLayer = tileInfo.layer.get();
IntRect tileRect = rectForTileIndex(tileIndex);
if (tileRect.intersects(coverageRectInTileCoords)) {
tileInfo.cohort = VisibleTileCohort;
if (tileInfo.hasStaleContent) {
// FIXME: store a dirty region per layer?
tileLayer->setNeedsDisplay();
tileInfo.hasStaleContent = false;
}
} else {
// Add to the currentCohort if not already in one.
if (tileInfo.cohort == VisibleTileCohort) {
tileInfo.cohort = currCohort;
++tilesInCohort;
if (m_controller.unparentsOffscreenTiles())
tileLayer->removeFromSuperlayer();
} else if (m_controller.unparentsOffscreenTiles() && m_controller.shouldAggressivelyRetainTiles() && tileLayer->superlayer()) {
// Aggressive tile retention means we'll never remove cohorts, but we need to make sure they're unparented.
// We can't immediately unparent cohorts comprised of secondary tiles that never touch the primary coverage rect,
// because that would defeat the usefulness of prepopulateRect(); instead, age prepopulated tiles out as if they were being removed.
for (auto& cohort : m_cohortList) {
if (cohort.cohort != tileInfo.cohort)
continue;
double timeUntilCohortExpires = cohort.timeUntilExpiration();
if (timeUntilCohortExpires > 0) {
minimumRevalidationTimerDuration = std::min(minimumRevalidationTimerDuration, timeUntilCohortExpires);
needsTileRevalidation = true;
} else
tileLayer->removeFromSuperlayer();
break;
}
}
}
}
if (needsTileRevalidation)
m_controller.scheduleTileRevalidation(minimumRevalidationTimerDuration);
if (tilesInCohort)
startedNewCohort(currCohort);
if (!m_controller.shouldAggressivelyRetainTiles()) {
if (m_controller.shouldTemporarilyRetainTileCohorts())
scheduleCohortRemoval();
else if (tilesInCohort)
removeTilesInCohort(currCohort);
}
// Ensure primary tile coverage tiles.
m_primaryTileCoverageRect = ensureTilesForRect(coverageRect, CoverageType::PrimaryTiles);
if (validationPolicy & PruneSecondaryTiles) {
removeAllSecondaryTiles();
m_cohortList.clear();
} else {
for (auto& secondaryCoverageRect : m_secondaryTileCoverageRects) {
FloatRect secondaryRectInLayerCoordinates(secondaryCoverageRect);
secondaryRectInLayerCoordinates.scale(1 / m_scale);
ensureTilesForRect(secondaryRectInLayerCoordinates, CoverageType::SecondaryTiles);
}
m_secondaryTileCoverageRects.clear();
}
if (m_controller.unparentsOffscreenTiles() && (validationPolicy & UnparentAllTiles)) {
for (TileMap::iterator it = m_tiles.begin(), end = m_tiles.end(); it != end; ++it)
it->value.layer->removeFromSuperlayer();
}
auto boundsAtLastRevalidate = m_controller.boundsAtLastRevalidate();
if (boundsAtLastRevalidate != bounds) {
// If there are margin tiles and the bounds have grown taller or wider, then the tiles that used to
// be bottom or right margin tiles need to be invalidated.
if (m_controller.hasMargins()) {
if (bounds.width() > boundsAtLastRevalidate.width() || bounds.height() > boundsAtLastRevalidate.height()) {
IntRect boundsWithoutMargin = m_controller.boundsWithoutMargin();
IntRect oldBoundsWithoutMargin = m_controller.boundsAtLastRevalidateWithoutMargin();
if (bounds.height() > boundsAtLastRevalidate.height()) {
IntRect formerBottomMarginRect = IntRect(oldBoundsWithoutMargin.x(), oldBoundsWithoutMargin.height(),
oldBoundsWithoutMargin.width(), boundsWithoutMargin.height() - oldBoundsWithoutMargin.height());
setNeedsDisplayInRect(formerBottomMarginRect);
}
if (bounds.width() > boundsAtLastRevalidate.width()) {
IntRect formerRightMarginRect = IntRect(oldBoundsWithoutMargin.width(), oldBoundsWithoutMargin.y(),
boundsWithoutMargin.width() - oldBoundsWithoutMargin.width(), oldBoundsWithoutMargin.height());
setNeedsDisplayInRect(formerRightMarginRect);
}
}
}
FloatRect scaledBounds(bounds);
scaledBounds.scale(m_scale);
IntRect boundsInTileCoords(enclosingIntRect(scaledBounds));
TileIndex topLeftForBounds;
TileIndex bottomRightForBounds;
getTileIndexRangeForRect(boundsInTileCoords, topLeftForBounds, bottomRightForBounds);
Vector<TileIndex> tilesToRemove;
for (auto& index : m_tiles.keys()) {
if (index.y() < topLeftForBounds.y() || index.y() > bottomRightForBounds.y() || index.x() < topLeftForBounds.x() || index.x() > bottomRightForBounds.x())
tilesToRemove.append(index);
}
removeTiles(tilesToRemove);
}
m_controller.didRevalidateTiles();
}
