void LayoutSVGInline::absoluteQuads(Vector<FloatQuad>& quads) const {
const LayoutSVGText* textRoot =
LayoutSVGText::locateLayoutSVGTextAncestor(this);
if (!textRoot)
return;
FloatRect textBoundingBox = textRoot->strokeBoundingBox();
for (InlineFlowBox* box = firstLineBox(); box; box = box->nextLineBox())
quads.append(
localToAbsoluteQuad(FloatRect(textBoundingBox.x() + box->x().toFloat(),
textBoundingBox.y() + box->y().toFloat(),
box->logicalWidth().toFloat(),
box->logicalHeight().toFloat()),
false));
}
void RenderSVGInline::absoluteQuads(Vector<FloatQuad>& quads, bool* wasFixed)
{
RenderObject* object = RenderSVGText::locateRenderSVGTextAncestor(this);
if (!object)
return;
FloatRect textBoundingBox = object->strokeBoundingBox();
for (InlineFlowBox* box = firstLineBox(); box; box = box->nextLineBox())
quads.append(localToAbsoluteQuad(FloatRect(textBoundingBox.x() + box->x(), textBoundingBox.y() + box->y(), box->logicalWidth(), box->logicalHeight()), false, wasFixed));
}
void RenderSVGInline::absoluteQuads(Vector<FloatQuad>& quads, bool* wasFixed) const
{
auto* textAncestor = RenderSVGText::locateRenderSVGTextAncestor(*this);
if (!textAncestor)
return;
FloatRect textBoundingBox = textAncestor->strokeBoundingBox();
for (InlineFlowBox* box = firstLineBox(); box; box = box->nextLineBox())
quads.append(localToAbsoluteQuad(FloatRect(textBoundingBox.x() + box->x(), textBoundingBox.y() + box->y(), box->logicalWidth(), box->logicalHeight()), UseTransforms, wasFixed));
}
void SnapToLinesLayouter::layout()
{
// http://dev.w3.org/html5/webvtt/#dfn-apply-webvtt-cue-settings
// Step 13, "If cue's text track cue snap-to-lines flag is set".
InlineFlowBox* firstLineBox = findFirstLineBox();
if (!firstLineBox)
return;
// Steps 1-3 skipped.
// 4. Horizontal: Let step be the height of the first line box in boxes.
// Vertical: Let step be the width of the first line box in boxes.
LayoutUnit step = firstLineBox->logicalHeight();
// 5. If step is zero, then jump to the step labeled done positioning below.
if (!step)
return;
// Steps 6-11.
LayoutUnit positionAdjustment = computeInitialPositionAdjustment(step);
// 12. Move all boxes in boxes ...
// Horizontal: ... down by the distance given by position
// Vertical: ... right by the distance given by position
moveBoxesBy(positionAdjustment);
// 13. Remember the position of all the boxes in boxes as their specified
// position.
m_specifiedPosition = m_cueBox.location();
// 14. Let best position be null. It will hold a position for boxes, much
// like specified position in the previous step.
// 15. Let best position score be null.
// 16. Let switched be false.
bool switched = false;
// Step 17 skipped. (margin == 0; title area == video area)
// 18. Step loop: If none of the boxes in boxes would overlap any of the
// boxes in output, and all of the boxes in output are entirely within the
// title area box, then jump to the step labeled done positioning below.
while (isOutside() || isOverlapping()) {
// 19. Let current position score be the percentage of the area of the
// bounding box of the boxes in boxes that is outside the title area
// box.
// 20. If best position is null (i.e. this is the first run through
// this loop, switched is still false, the boxes in boxes are at their
// specified position, and best position score is still null), or if
// current position score is a lower percentage than that in best
// position score, then remember the position of all the boxes in boxes
// as their best position, and set best position score to current
// position score.
if (!shouldSwitchDirection(firstLineBox, step)) {
// 22. Horizontal: Move all the boxes in boxes down by the distance
// given by step. (If step is negative, then this will actually
// result in an upwards movement of the boxes in absolute terms.)
// Vertical: Move all the boxes in boxes right by the distance
// given by step. (If step is negative, then this will actually
// result in a leftwards movement of the boxes in absolute terms.)
moveBoxesBy(step);
// 23. Jump back to the step labeled step loop.
continue;
}
// 24. Switch direction: If switched is true, then move all the boxes in
// boxes back to their best position, and jump to the step labeled done
// positioning below.
// 25. Otherwise, move all the boxes in boxes back to their specified
// position as determined in the earlier step.
m_cueBox.setLocation(m_specifiedPosition);
// XX. If switched is true, jump to the step labeled done
// positioning below.
if (switched)
break;
// 26. Negate step.
step = -step;
// 27. Set switched to true.
switched = true;
// 28. Jump back to the step labeled step loop.
}
}
