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loader SvgSceneBuilder: Add root node to clipping viewBox.

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If the boundary of scene created through the scenebuilder is larger than the viewbox,
scene(SVG's root) should be clipped to the size of the viewbox.
So, if scene need a clip, add a parent root and add clippath composition to that root.
This commit is contained in:
JunsuChoi 2021-03-15 14:56:36 +09:00 • committed by Hermet Park
parent 8ff1405050
commit 631c1e5651
1 changed files with 27 additions and 1 deletions
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28
src/loaders/svg/tvgSvgSceneBuilder.cpp
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@ -386,6 +386,32 @@ unique_ptr<Scene> _sceneBuildHelper(const SvgNode* node, float vx, float vy, flo
return nullptr; return nullptr;
} }
unique_ptr<Scene> _buildRoot(const SvgNode* node, float vx, float vy, float vw, float vh)
{
unique_ptr<Scene> root;
auto docNode = move(_sceneBuildHelper(node, vx, vy, vw, vh));
float x, y, w, h;
if (docNode->bounds(&x, &y, &w, &h) != Result::Success) return nullptr;
if (x < vx || y < vy || w > vh || h > vh) {
auto viewBoxClip = Shape::gen();
viewBoxClip->appendRect(vx, vy ,vw, vh, 0, 0);
viewBoxClip->fill(0, 0, 0, 255);
auto compositeLayer = Scene::gen();
compositeLayer->composite(move(viewBoxClip), tvg::CompositeMethod::ClipPath);
compositeLayer->push(move(docNode));
root = Scene::gen();
root->push(move(compositeLayer));
}
else
{
root = move(docNode);
}
return root;
}
SvgSceneBuilder::SvgSceneBuilder() SvgSceneBuilder::SvgSceneBuilder()
{ {
@ -401,5 +427,5 @@ unique_ptr<Scene> SvgSceneBuilder::build(SvgNode* node)
{ {
if (!node || (node->type != SvgNodeType::Doc)) return nullptr; if (!node || (node->type != SvgNodeType::Doc)) return nullptr;
return _sceneBuildHelper(node, node->node.doc.vx, node->node.doc.vy, node->node.doc.vw, node->node.doc.vh); return _buildRoot(node, node->node.doc.vx, node->node.doc.vy, node->node.doc.vw, node->node.doc.vh);
} }