bool RenderFlowThread::hitTestFlowThreadPortionInRegion(RenderRegion* region, LayoutRect flowThreadPortionRect, LayoutRect flowThreadPortionOverflowRect, const HitTestRequest& request, HitTestResult& result, const HitTestLocation& locationInContainer, const LayoutPoint& accumulatedOffset) const
{
LayoutRect regionClippingRect = computeRegionClippingRect(accumulatedOffset, flowThreadPortionRect, flowThreadPortionOverflowRect);
if (!regionClippingRect.contains(locationInContainer.point()))
return false;
LayoutSize renderFlowThreadOffset;
if (style()->isFlippedBlocksWritingMode()) {
LayoutRect flippedFlowThreadPortionRect(flowThreadPortionRect);
flipForWritingMode(flippedFlowThreadPortionRect);
renderFlowThreadOffset = accumulatedOffset - flippedFlowThreadPortionRect.location();
} else
renderFlowThreadOffset = accumulatedOffset - flowThreadPortionRect.location();
// Always ignore clipping, since the RenderFlowThread has nothing to do with the bounds of the FrameView.
HitTestRequest newRequest(request.type() | HitTestRequest::IgnoreClipping);
// Make a new temporary HitTestLocation in the new region.
HitTestLocation newHitTestLocation(locationInContainer, -renderFlowThreadOffset, region);
bool isPointInsideFlowThread = layer()->hitTest(newRequest, newHitTestLocation, result);
// FIXME: Should we set result.m_localPoint back to the RenderRegion's coordinate space or leave it in the RenderFlowThread's coordinate
// space? Right now it's staying in the RenderFlowThread's coordinate space, which may end up being ok. We will know more when we get around to
// patching positionForPoint.
return isPointInsideFlowThread;
}
void RenderFlowThread::paintFlowThreadPortionInRegion(PaintInfo& paintInfo, RenderRegion* region, LayoutRect flowThreadPortionRect, LayoutRect flowThreadPortionOverflowRect, const LayoutPoint& paintOffset) const
{
GraphicsContext* context = paintInfo.context;
if (!context)
return;
// RenderFlowThread should start painting its content in a position that is offset
// from the region rect's current position. The amount of offset is equal to the location of
// the flow thread portion in the flow thread's local coordinates.
// Note that we have to pixel snap the location at which we're going to paint, since this is necessary
// to minimize the amount of incorrect snapping that would otherwise occur.
// If we tried to paint by applying a non-integral translation, then all the
// layout code that attempted to pixel snap would be incorrect.
IntPoint adjustedPaintOffset;
LayoutPoint portionLocation;
if (style()->isFlippedBlocksWritingMode()) {
LayoutRect flippedFlowThreadPortionRect(flowThreadPortionRect);
flipForWritingMode(flippedFlowThreadPortionRect);
portionLocation = flippedFlowThreadPortionRect.location();
} else
portionLocation = flowThreadPortionRect.location();
adjustedPaintOffset = roundedIntPoint(paintOffset - portionLocation);
// The clipping rect for the region is set up by assuming the flowThreadPortionRect is going to paint offset from adjustedPaintOffset.
// Remember that we pixel snapped and moved the paintOffset and stored the snapped result in adjustedPaintOffset. Now we add back in
// the flowThreadPortionRect's location to get the spot where we expect the portion to actually paint. This can be non-integral and
// that's ok. We then pixel snap the resulting clipping rect to account for snapping that will occur when the flow thread paints.
IntRect regionClippingRect = pixelSnappedIntRect(computeRegionClippingRect(adjustedPaintOffset + portionLocation, flowThreadPortionRect, flowThreadPortionOverflowRect));
PaintInfo info(paintInfo);
info.rect.intersect(regionClippingRect);
if (!info.rect.isEmpty()) {
context->save();
context->clip(regionClippingRect);
context->translate(adjustedPaintOffset.x(), adjustedPaintOffset.y());
info.rect.moveBy(-adjustedPaintOffset);
layer()->paint(context, info.rect, 0, 0, region, RenderLayer::PaintLayerTemporaryClipRects);
context->restore();
}
}
void RenderFlowThread::paintFlowThreadPortionInRegion(PaintInfo& paintInfo, RenderRegion* region, LayoutRect flowThreadPortionRect, LayoutRect flowThreadPortionOverflowRect, const LayoutPoint& paintOffset) const
{
GraphicsContext* context = paintInfo.context;
if (!context)
return;
// Adjust the clipping rect for the region.
// paintOffset contains the offset where the painting should occur
// adjusted with the region padding and border.
LayoutRect regionClippingRect = computeRegionClippingRect(paintOffset, flowThreadPortionRect, flowThreadPortionOverflowRect);
PaintInfo info(paintInfo);
info.rect.intersect(pixelSnappedIntRect(regionClippingRect));
if (!info.rect.isEmpty()) {
context->save();
context->clip(regionClippingRect);
// RenderFlowThread should start painting its content in a position that is offset
// from the region rect's current position. The amount of offset is equal to the location of
// the flow thread portion in the flow thread's local coordinates.
IntPoint renderFlowThreadOffset;
if (style()->isFlippedBlocksWritingMode()) {
LayoutRect flippedFlowThreadPortionRect(flowThreadPortionRect);
flipForWritingMode(flippedFlowThreadPortionRect);
renderFlowThreadOffset = roundedIntPoint(paintOffset - flippedFlowThreadPortionRect.location());
} else
renderFlowThreadOffset = roundedIntPoint(paintOffset - flowThreadPortionRect.location());
context->translate(renderFlowThreadOffset.x(), renderFlowThreadOffset.y());
info.rect.moveBy(-renderFlowThreadOffset);
layer()->paint(context, info.rect, 0, 0, region, RenderLayer::PaintLayerTemporaryClipRects);
context->restore();
}
}
