void SVGCharacterLayoutInfo::addLayoutInformation(InlineFlowBox* flowBox, float textAnchorStartOffset)
{
bool wasInitialLayout = isInitialLayout();
RenderSVGTextPath* textPath = toRenderSVGTextPath(flowBox->renderer());
Path path = textPath->layoutPath();
float baselineShift = calculateBaselineShift(textPath);
layoutPath = path;
layoutPathLength = path.length();
if (layoutPathLength <= 0.0f)
return;
startOffset = textPath->startOffset();
if (textPath->startOffset() >= 0.0f && textPath->startOffset() <= 1.0f)
startOffset *= layoutPathLength;
startOffset += textAnchorStartOffset;
currentOffset = startOffset;
// Only baseline-shift is handled through the normal layout system
addStackContent(BaselineShiftStack, baselineShift);
if (wasInitialLayout) {
xStackChanged = false;
yStackChanged = false;
dxStackChanged = false;
dyStackChanged = false;
angleStackChanged = false;
baselineShiftStackChanged = false;
}
}
void SVGCharacterLayoutInfo::addLayoutInformation(SVGTextPositioningElement* element)
{
bool isInitialLayout = xStack.isEmpty() && yStack.isEmpty() &&
dxStack.isEmpty() && dyStack.isEmpty() &&
angleStack.isEmpty() && baselineShiftStack.isEmpty() &&
curx == 0.0f && cury == 0.0f;
float baselineShift = calculateBaselineShift(element->renderer());
addStackContent(XStack, element->x(), element);
addStackContent(YStack, element->y(), element);
addStackContent(DxStack, element->dx(), element);
addStackContent(DyStack, element->dy(), element);
addStackContent(AngleStack, element->rotate());
addStackContent(BaselineShiftStack, baselineShift);
if (isInitialLayout) {
xStackChanged = false;
yStackChanged = false;
dxStackChanged = false;
dyStackChanged = false;
angleStackChanged = false;
baselineShiftStackChanged = false;
}
}
void SVGCharacterLayoutInfo::addStackContent(StackType type, SVGLengthList* list, const SVGElement* context)
{
unsigned length = list->numberOfItems();
if (!length)
return;
PositionedFloatVector newLayoutInfo;
ExceptionCode ec = 0;
for (unsigned i = 0; i < length; ++i) {
float value = list->getItem(i, ec).value(context);
ASSERT(ec == 0);
newLayoutInfo.append(value);
}
addStackContent(type, newLayoutInfo);
}
void SVGCharacterLayoutInfo::addStackContent(StackType type, SVGNumberList* list)
{
unsigned length = list->numberOfItems();
if (!length)
return;
PositionedFloatVector newLayoutInfo;
// TODO: Convert more efficiently!
ExceptionCode ec = 0;
for (unsigned i = 0; i < length; ++i) {
float value = list->getItem(i, ec);
ASSERT(ec == 0);
newLayoutInfo.append(value);
}
addStackContent(type, newLayoutInfo);
}