FilterOutsets FilterOperations::outsets() const
{
FilterOutsets totalOutsets;
for (size_t i = 0; i < m_operations.size(); ++i) {
FilterOperation* filterOperation = m_operations.at(i).get();
switch (filterOperation->type()) {
case FilterOperation::BLUR: {
BlurFilterOperation* blurOperation = toBlurFilterOperation(filterOperation);
float stdDeviation = floatValueForLength(blurOperation->stdDeviation(), 0);
IntSize outsetSize = outsetSizeForBlur(stdDeviation);
FilterOutsets outsets(outsetSize.height(), outsetSize.width(), outsetSize.height(), outsetSize.width());
totalOutsets += outsets;
break;
}
case FilterOperation::DROP_SHADOW: {
DropShadowFilterOperation* dropShadowOperation = toDropShadowFilterOperation(filterOperation);
IntSize outsetSize = outsetSizeForBlur(dropShadowOperation->stdDeviation());
FilterOutsets outsets(
std::max(0, outsetSize.height() - dropShadowOperation->y()),
std::max(0, outsetSize.width() + dropShadowOperation->x()),
std::max(0, outsetSize.height() + dropShadowOperation->y()),
std::max(0, outsetSize.width() - dropShadowOperation->x())
);
totalOutsets += outsets;
break;
}
default:
break;
}
}
return totalOutsets;
}
FilterOutsets FilterOperations::outsets() const
{
FilterOutsets totalOutsets;
for (size_t i = 0; i < m_operations.size(); ++i) {
FilterOperation* filterOperation = m_operations.at(i).get();
switch (filterOperation->type()) {
case FilterOperation::BLUR: {
BlurFilterOperation* blurOperation = toBlurFilterOperation(filterOperation);
float stdDeviation = floatValueForLength(blurOperation->stdDeviation(), 0);
IntSize outsetSize = outsetSizeForBlur(stdDeviation);
FilterOutsets outsets(outsetSize.height(), outsetSize.width(), outsetSize.height(), outsetSize.width());
totalOutsets += outsets;
break;
}
case FilterOperation::DROP_SHADOW: {
DropShadowFilterOperation* dropShadowOperation = toDropShadowFilterOperation(filterOperation);
IntSize outsetSize = outsetSizeForBlur(dropShadowOperation->stdDeviation());
FilterOutsets outsets(
std::max(0, outsetSize.height() - dropShadowOperation->y()),
std::max(0, outsetSize.width() + dropShadowOperation->x()),
std::max(0, outsetSize.height() + dropShadowOperation->y()),
std::max(0, outsetSize.width() - dropShadowOperation->x())
);
totalOutsets += outsets;
break;
}
case FilterOperation::REFERENCE: {
ReferenceFilterOperation* referenceOperation = toReferenceFilterOperation(filterOperation);
if (referenceOperation->filter() && referenceOperation->filter()->lastEffect()) {
FloatRect outsetRect(0, 0, 1, 1);
outsetRect = referenceOperation->filter()->lastEffect()->mapRectRecursive(outsetRect);
FilterOutsets outsets(
std::max(0.0f, -outsetRect.y()),
std::max(0.0f, outsetRect.x() + outsetRect.width() - 1),
std::max(0.0f, outsetRect.y() + outsetRect.height() - 1),
std::max(0.0f, -outsetRect.x())
);
totalOutsets += outsets;
}
break;
}
default:
break;
}
}
return totalOutsets;
}
void FilterOperations::getOutsets(LayoutUnit& top, LayoutUnit& right, LayoutUnit& bottom, LayoutUnit& left) const
{
top = 0;
right = 0;
bottom = 0;
left = 0;
for (size_t i = 0; i < m_operations.size(); ++i) {
FilterOperation* filterOperation = m_operations.at(i).get();
switch (filterOperation->getOperationType()) {
case FilterOperation::BLUR: {
BlurFilterOperation* blurOperation = static_cast<BlurFilterOperation*>(filterOperation);
float stdDeviation = blurOperation->stdDeviation().calcFloatValue(0);
IntSize outset = outsetSizeForBlur(stdDeviation);
top += outset.height();
right += outset.width();
bottom += outset.height();
left += outset.width();
break;
}
case FilterOperation::DROP_SHADOW: {
DropShadowFilterOperation* dropShadowOperation = static_cast<DropShadowFilterOperation*>(filterOperation);
IntSize outset = outsetSizeForBlur(dropShadowOperation->stdDeviation());
top += outset.height() - dropShadowOperation->y();
right += outset.width() + dropShadowOperation->x();
bottom += outset.height() + dropShadowOperation->y();
left += outset.width() - dropShadowOperation->x();
break;
}
#if ENABLE(CSS_SHADERS)
case FilterOperation::CUSTOM: {
// Need to include the filter margins here.
break;
}
#endif
default:
break;
}
}
}
