// Abs x/y position of the caret ignoring transforms.
// TODO(yosin) navigation with transforms should be smarter.
static LayoutUnit lineDirectionPointForBlockDirectionNavigationOf(
const VisiblePosition& visiblePosition) {
if (visiblePosition.isNull())
return LayoutUnit();
LayoutObject* layoutObject;
LayoutRect localRect = localCaretRectOfPosition(
visiblePosition.toPositionWithAffinity(), layoutObject);
if (localRect.isEmpty() || !layoutObject)
return LayoutUnit();
// This ignores transforms on purpose, for now. Vertical navigation is done
// without consulting transforms, so that 'up' in transformed text is 'up'
// relative to the text, not absolute 'up'.
FloatPoint caretPoint =
layoutObject->localToAbsolute(FloatPoint(localRect.location()));
LayoutObject* containingBlock = layoutObject->containingBlock();
if (!containingBlock) {
// Just use ourselves to determine the writing mode if we have no containing
// block.
containingBlock = layoutObject;
}
return LayoutUnit(containingBlock->isHorizontalWritingMode()
? caretPoint.x()
: caretPoint.y());
}
int VisiblePosition::lineDirectionPointForBlockDirectionNavigation() const
{
LayoutObject* layoutObject;
LayoutRect localRect = localCaretRect(layoutObject);
if (localRect.isEmpty() || !layoutObject)
return 0;
// This ignores transforms on purpose, for now. Vertical navigation is done
// without consulting transforms, so that 'up' in transformed text is 'up'
// relative to the text, not absolute 'up'.
FloatPoint caretPoint = layoutObject->localToAbsolute(FloatPoint(localRect.location()));
LayoutObject* containingBlock = layoutObject->containingBlock();
if (!containingBlock)
containingBlock = layoutObject; // Just use ourselves to determine the writing mode if we have no containing block.
return containingBlock->isHorizontalWritingMode() ? caretPoint.x() : caretPoint.y();
}
