void SkComposeImageFilter::computeFastBounds(const SkRect& src, SkRect* dst) const {
SkImageFilter* outer = getInput(0);
SkImageFilter* inner = getInput(1);
SkRect tmp;
inner->computeFastBounds(src, &tmp);
outer->computeFastBounds(tmp, dst);
}
SkRect SkImageFilter::computeFastBounds(const SkRect& src) const {
if (0 == this->countInputs()) {
return src;
}
SkRect combinedBounds = this->getInput(0) ? this->getInput(0)->computeFastBounds(src) : src;
for (int i = 1; i < this->countInputs(); i++) {
SkImageFilter* input = this->getInput(i);
if (input) {
combinedBounds.join(input->computeFastBounds(src));
} else {
combinedBounds.join(src);
}
}
return combinedBounds;
}
void SkImageFilter::computeFastBounds(const SkRect& src, SkRect* dst) const {
if (0 == fInputCount) {
*dst = src;
return;
}
if (this->getInput(0)) {
this->getInput(0)->computeFastBounds(src, dst);
} else {
*dst = src;
}
for (int i = 1; i < fInputCount; i++) {
SkImageFilter* input = this->getInput(i);
if (input) {
SkRect bounds;
input->computeFastBounds(src, &bounds);
dst->join(bounds);
} else {
dst->join(src);
}
}
}
SkRect SkComposeImageFilter::computeFastBounds(const SkRect& src) const {
SkImageFilter* outer = this->getInput(0);
SkImageFilter* inner = this->getInput(1);
return outer->computeFastBounds(inner->computeFastBounds(src));
}