void RenderLineBreak::collectSelectionRects(Vector<SelectionRect>& rects, unsigned, unsigned)
{
    ensureLineBoxes(*this);
    InlineElementBox* box = m_inlineBoxWrapper;
    if (!box)
        return;
    const RootInlineBox& rootBox = box->root();
    LayoutRect rect = rootBox.computeCaretRect(box->logicalLeft(), 0, nullptr);
    if (rootBox.isFirstAfterPageBreak()) {
        if (box->isHorizontal())
            rect.shiftYEdgeTo(rootBox.lineTopWithLeading());
        else
            rect.shiftXEdgeTo(rootBox.lineTopWithLeading());
    }

    RenderBlock* containingBlock = this->containingBlock();
    // Map rect, extended left to leftOffset, and right to rightOffset, through transforms to get minX and maxX.
    LogicalSelectionOffsetCaches cache(*containingBlock);
    LayoutUnit leftOffset = containingBlock->logicalLeftSelectionOffset(*containingBlock, box->logicalTop(), cache);
    LayoutUnit rightOffset = containingBlock->logicalRightSelectionOffset(*containingBlock, box->logicalTop(), cache);
    LayoutRect extentsRect = rect;
    if (box->isHorizontal()) {
        extentsRect.setX(leftOffset);
        extentsRect.setWidth(rightOffset - leftOffset);
    } else {
        extentsRect.setY(leftOffset);
        extentsRect.setHeight(rightOffset - leftOffset);
    }
    extentsRect = localToAbsoluteQuad(FloatRect(extentsRect)).enclosingBoundingBox();
    if (!box->isHorizontal())
        extentsRect = extentsRect.transposedRect();
    bool isFirstOnLine = !box->previousOnLineExists();
    bool isLastOnLine = !box->nextOnLineExists();
    if (containingBlock->isRubyBase() || containingBlock->isRubyText())
        isLastOnLine = !containingBlock->containingBlock()->inlineBoxWrapper()->nextOnLineExists();

    bool isFixed = false;
    IntRect absRect = localToAbsoluteQuad(FloatRect(rect), UseTransforms, &isFixed).enclosingBoundingBox();
    bool boxIsHorizontal = !box->isSVGInlineTextBox() ? box->isHorizontal() : !style().svgStyle().isVerticalWritingMode();
    // If the containing block is an inline element, we want to check the inlineBoxWrapper orientation
    // to determine the orientation of the block. In this case we also use the inlineBoxWrapper to
    // determine if the element is the last on the line.
    if (containingBlock->inlineBoxWrapper()) {
        if (containingBlock->inlineBoxWrapper()->isHorizontal() != boxIsHorizontal) {
            boxIsHorizontal = containingBlock->inlineBoxWrapper()->isHorizontal();
            isLastOnLine = !containingBlock->inlineBoxWrapper()->nextOnLineExists();
        }
    }

    rects.append(SelectionRect(absRect, box->direction(), extentsRect.x(), extentsRect.maxX(), extentsRect.maxY(), 0, box->isLineBreak(), isFirstOnLine, isLastOnLine, false, false, boxIsHorizontal, isFixed, containingBlock->isRubyText(), view().pageNumberForBlockProgressionOffset(absRect.x())));
}
示例#2
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// 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())));
}