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lottie: properly capture the stroking context

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Each group must determine the stroking rendering contexts
and assess whether context switching has occurred.

Migrate the sequence from the root layer to all groups.
This commit is contained in:
Hermet Park 2024-01-17 00:33:48 +09:00
parent 441542b272
commit 5b89479963
2 changed files with 18 additions and 39 deletions
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37
src/loaders/lottie/tvgLottieBuilder.cpp
View file

@ -1035,6 +1035,7 @@ static void _buildReference(LottieComposition* comp, LottieLayer* layer)
auto assetLayer = static_cast<LottieLayer*>(*asset);
if (_buildComposition(comp, assetLayer)) {
layer->children = assetLayer->children;
layer->reqFragment = assetLayer->reqFragment;
}
} else if (layer->type == LottieLayer::Image) {
layer->children.push(*asset);
@ -1069,40 +1070,6 @@ static void _bulidHierarchy(LottieGroup* parent, LottieLayer* child)
}
//TODO: Optimize this. Can we preprocess in the parsing stage?
static void _checkFragment(LottieGroup* parent)
{
if (parent->children.count == 0) return;
int strokeCnt = 0;
/* Figure out if the rendering context should be fragmented.
Multiple stroking or grouping with a stroking would occur this.
This fragment resolves the overlapped stroke outlines. */
for (auto c = parent->children.end() - 1; c >= parent->children.data; --c) {
switch ((*c)->type) {
case LottieObject::Group: {
if (strokeCnt > 0) {
parent->reqFragment = true;
return;
}
break;
}
case LottieObject::SolidStroke:
case LottieObject::GradientStroke: {
if (strokeCnt > 0) {
parent->reqFragment = true;
return;
}
++strokeCnt;
break;
}
default: break;
}
}
}
static void _attachFont(LottieComposition* comp, LottieLayer* parent)
{
//TODO: Consider to migrate this attachment to the frame update time.
@ -1142,8 +1109,6 @@ static bool _buildComposition(LottieComposition* comp, LottieGroup* parent)
}
_bulidHierarchy(parent, child);
_checkFragment(static_cast<LottieGroup*>(*c));
//attach the necessary font data
if (child->type == LottieLayer::Text) _attachFont(comp, child);

20
src/loaders/lottie/tvgLottieModel.cpp
View file

@ -135,9 +135,23 @@ Fill* LottieGradient::fill(float frameNo)
void LottieGroup::prepare(LottieObject::Type type)
{
LottieObject::type = type;
for (auto child = children.data; child < children.end(); ++child) {
statical &= (*child)->statical;
if (!statical) break;
if (children.count == 0) return;
size_t strokeCnt = 0;
for (auto c = children.end() - 1; c >= children.data; --c) {
if (reqFragment && !statical) break;
auto child = static_cast<LottieObject*>(*c);
if (statical) statical &= child->statical;
/* Figure out if the rendering context should be fragmented.
Multiple stroking or grouping with a stroking would occur this.
This fragment resolves the overlapped stroke outlines. */
if (reqFragment) continue;
if (child->type == LottieObject::SolidStroke || child->type == LottieObject::GradientStroke) {
if (strokeCnt > 0) reqFragment = true;
else ++strokeCnt;
} else if (child->type == LottieObject::Group && strokeCnt > 0) reqFragment = true;
}
}