// FIXME: This doesn't behave correctly for floating or positioned images, but WebCore doesn't handle those well
// during selection creation yet anyway.
// FIXME: We can't tell whether or not we contain the start or end of the selected Range using only the offsets
// of the start and end, we need to know the whole Position.
void RenderImage::collectSelectionRects(Vector<SelectionRect>& rects, unsigned, unsigned)
{
RenderBlock* containingBlock = this->containingBlock();
IntRect imageRect;
// FIXME: It doesn't make sense to package line bounds into SelectionRects. We should find
// the right and left extent of the selection once for the entire selected Range, perhaps
// using the Range's common ancestor.
IntRect lineExtentRect;
bool isFirstOnLine = false;
bool isLastOnLine = false;
InlineBox* inlineBox = inlineBoxWrapper();
if (!inlineBox) {
// This is a block image.
imageRect = IntRect(0, 0, width(), height());
isFirstOnLine = true;
isLastOnLine = true;
lineExtentRect = imageRect;
if (containingBlock->isHorizontalWritingMode()) {
lineExtentRect.setX(containingBlock->x());
lineExtentRect.setWidth(containingBlock->width());
} else {
lineExtentRect.setY(containingBlock->y());
lineExtentRect.setHeight(containingBlock->height());
}
} else {
LayoutUnit selectionTop = !containingBlock->style().isFlippedBlocksWritingMode() ? inlineBox->root().selectionTop() - logicalTop() : logicalBottom() - inlineBox->root().selectionBottom();
imageRect = IntRect(0, selectionTop, logicalWidth(), inlineBox->root().selectionHeight());
isFirstOnLine = !inlineBox->previousOnLineExists();
isLastOnLine = !inlineBox->nextOnLineExists();
LogicalSelectionOffsetCaches cache(*containingBlock);
LayoutUnit leftOffset = containingBlock->logicalLeftSelectionOffset(*containingBlock, inlineBox->logicalTop(), cache);
LayoutUnit rightOffset = containingBlock->logicalRightSelectionOffset(*containingBlock, inlineBox->logicalTop(), cache);
lineExtentRect = IntRect(leftOffset - logicalLeft(), imageRect.y(), rightOffset - leftOffset, imageRect.height());
if (!inlineBox->isHorizontal()) {
imageRect = imageRect.transposedRect();
lineExtentRect = lineExtentRect.transposedRect();
}
}
bool isFixed = false;
IntRect absoluteBounds = localToAbsoluteQuad(FloatRect(imageRect), UseTransforms, &isFixed).enclosingBoundingBox();
IntRect lineExtentBounds = localToAbsoluteQuad(FloatRect(lineExtentRect)).enclosingBoundingBox();
if (!containingBlock->isHorizontalWritingMode())
lineExtentBounds = lineExtentBounds.transposedRect();
// FIXME: We should consider either making SelectionRect a struct or better organize its optional fields into
// an auxiliary struct to simplify its initialization.
rects.append(SelectionRect(absoluteBounds, containingBlock->style().direction(), lineExtentBounds.x(), lineExtentBounds.maxX(), lineExtentBounds.maxY(), 0, false /* line break */, isFirstOnLine, isLastOnLine, false /* contains start */, false /* contains end */, containingBlock->style().isHorizontalWritingMode(), isFixed, false /* ruby text */, view().pageNumberForBlockProgressionOffset(absoluteBounds.x())));
}
LayoutUnit RenderFlowThread::offsetFromLogicalTopOfFirstRegion(const RenderBlock* currentBlock) const
{
// First check if we cached the offset for the block if it's an ancestor containing block of the box
// being currently laid out.
LayoutUnit offset;
if (cachedOffsetFromLogicalTopOfFirstRegion(currentBlock, offset))
return offset;
// If it's the current box being laid out, use the layout state.
const RenderBox* currentBoxDescendant = currentStatePusherRenderBox();
if (currentBlock == currentBoxDescendant) {
LayoutState* layoutState = view()->layoutState();
ASSERT(layoutState->renderer() == currentBlock);
ASSERT(layoutState && layoutState->isPaginated());
LayoutSize offsetDelta = layoutState->layoutOffset() - layoutState->pageOffset();
return currentBoxDescendant->isHorizontalWritingMode() ? offsetDelta.height() : offsetDelta.width();
}
// As a last resort, take the slow path.
LayoutRect blockRect(0, 0, currentBlock->width(), currentBlock->height());
while (currentBlock && !currentBlock->isRenderFlowThread()) {
RenderBlock* containerBlock = currentBlock->containingBlock();
ASSERT(containerBlock);
if (!containerBlock)
return 0;
LayoutPoint currentBlockLocation = currentBlock->location();
if (containerBlock->style()->writingMode() != currentBlock->style()->writingMode()) {
// We have to put the block rect in container coordinates
// and we have to take into account both the container and current block flipping modes
if (containerBlock->style()->isFlippedBlocksWritingMode()) {
if (containerBlock->isHorizontalWritingMode())
blockRect.setY(currentBlock->height() - blockRect.maxY());
else
blockRect.setX(currentBlock->width() - blockRect.maxX());
}
currentBlock->flipForWritingMode(blockRect);
}
blockRect.moveBy(currentBlockLocation);
currentBlock = containerBlock;
}
return currentBlock->isHorizontalWritingMode() ? blockRect.y() : blockRect.x();
}