void
nsCSSFilterInstance::SetBounds(FilterPrimitiveDescription& aDescr,
const nsTArray<FilterPrimitiveDescription>& aPrimitiveDescrs) {
int32_t inputIndex = GetLastResultIndex(aPrimitiveDescrs);
nsIntRect inputBounds = (inputIndex < 0) ?
mTargetBBoxInFilterSpace : ThebesIntRect(aPrimitiveDescrs[inputIndex].PrimitiveSubregion());
nsTArray<nsIntRegion> inputExtents;
inputExtents.AppendElement(inputBounds);
nsIntRegion outputExtents =
FilterSupport::PostFilterExtentsForPrimitive(aDescr, inputExtents);
IntRect outputBounds = ToIntRect(outputExtents.GetBounds());
aDescr.SetPrimitiveSubregion(outputBounds);
aDescr.SetFilterSpaceBounds(outputBounds);
}
nsresult
nsSVGFilterInstance::BuildPrimitives(nsTArray<FilterPrimitiveDescription>& aPrimitiveDescrs,
nsTArray<RefPtr<SourceSurface>>& aInputImages,
bool aInputIsTainted)
{
mSourceGraphicIndex = GetLastResultIndex(aPrimitiveDescrs);
// Clip previous filter's output to this filter's filter region.
if (mSourceGraphicIndex >= 0) {
FilterPrimitiveDescription& sourceDescr = aPrimitiveDescrs[mSourceGraphicIndex];
sourceDescr.SetPrimitiveSubregion(sourceDescr.PrimitiveSubregion().Intersect(mFilterSpaceBounds));
}
// Get the filter primitive elements.
nsTArray<RefPtr<nsSVGFE> > primitives;
for (nsIContent* child = mFilterElement->nsINode::GetFirstChild();
child;
child = child->GetNextSibling()) {
RefPtr<nsSVGFE> primitive;
CallQueryInterface(child, (nsSVGFE**)getter_AddRefs(primitive));
if (primitive) {
primitives.AppendElement(primitive);
}
}
// Maps source image name to source index.
nsDataHashtable<nsStringHashKey, int32_t> imageTable(8);
// The principal that we check principals of any loaded images against.
nsCOMPtr<nsIPrincipal> principal = mTargetContent->NodePrincipal();
for (uint32_t primitiveElementIndex = 0;
primitiveElementIndex < primitives.Length();
++primitiveElementIndex) {
nsSVGFE* filter = primitives[primitiveElementIndex];
AutoTArray<int32_t,2> sourceIndices;
nsresult rv = GetSourceIndices(filter, aPrimitiveDescrs, imageTable, sourceIndices);
if (NS_FAILED(rv)) {
return rv;
}
IntRect primitiveSubregion =
ComputeFilterPrimitiveSubregion(filter, aPrimitiveDescrs, sourceIndices);
nsTArray<bool> sourcesAreTainted;
GetInputsAreTainted(aPrimitiveDescrs, sourceIndices, aInputIsTainted, sourcesAreTainted);
FilterPrimitiveDescription descr =
filter->GetPrimitiveDescription(this, primitiveSubregion, sourcesAreTainted, aInputImages);
descr.SetIsTainted(filter->OutputIsTainted(sourcesAreTainted, principal));
descr.SetFilterSpaceBounds(mFilterSpaceBounds);
descr.SetPrimitiveSubregion(primitiveSubregion.Intersect(descr.FilterSpaceBounds()));
for (uint32_t i = 0; i < sourceIndices.Length(); i++) {
int32_t inputIndex = sourceIndices[i];
descr.SetInputPrimitive(i, inputIndex);
ColorSpace inputColorSpace = inputIndex >= 0
? aPrimitiveDescrs[inputIndex].OutputColorSpace()
: ColorSpace(ColorSpace::SRGB);
ColorSpace desiredInputColorSpace = filter->GetInputColorSpace(i, inputColorSpace);
descr.SetInputColorSpace(i, desiredInputColorSpace);
if (i == 0) {
// the output color space is whatever in1 is if there is an in1
descr.SetOutputColorSpace(desiredInputColorSpace);
}
}
if (sourceIndices.Length() == 0) {
descr.SetOutputColorSpace(filter->GetOutputColorSpace());
}
aPrimitiveDescrs.AppendElement(descr);
uint32_t primitiveDescrIndex = aPrimitiveDescrs.Length() - 1;
nsAutoString str;
filter->GetResultImageName().GetAnimValue(str, filter);
imageTable.Put(str, primitiveDescrIndex);
}
return NS_OK;
}