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API: enable users to use an accessor to traverse Scene

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remove the restriction of targeting only Picture.
now, any kind of paints can be adaptable here.
This commit is contained in:
Hermet Park 2024-12-26 13:48:26 +09:00 • committed by Hermet Park
parent 041ab1117b
commit 5e102dfd25
2 changed files with 9 additions and 9 deletions
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4
inc/thorvg.h
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@ -2131,7 +2131,7 @@ public:
/**
* @brief Set the access function for traversing the Picture scene tree nodes.
*
* @param[in] picture The picture node to traverse the internal scene-tree.
* @param[in] paint The paint node to traverse the internal scene-tree.
* @param[in] func The callback function calling for every paint nodes of the Picture.
* @param[in] data Data passed to the @p func as its argument.
*
@ -2139,7 +2139,7 @@ public:
*
* @note Experimental API
*/
Result set(Picture* picture, std::function<bool(const Paint* paint, void* data)> func, void* data) noexcept;
Result set(Paint* paint, std::function<bool(const Paint* paint, void* data)> func, void* data) noexcept;
/**
* @brief Generate a unique ID (hash key) from a given name.

14
src/renderer/tvgAccessor.cpp
View file

@ -50,27 +50,27 @@ static bool accessChildren(Iterator* it, function<bool(const Paint* paint, void*
/* External Class Implementation */
/************************************************************************/
Result Accessor::set(Picture* picture, function<bool(const Paint* paint, void* data)> func, void* data) noexcept
Result Accessor::set(Paint* paint, function<bool(const Paint* paint, void* data)> func, void* data) noexcept
{
if (!picture || !func) return Result::InvalidArguments;
if (!paint || !func) return Result::InvalidArguments;
//Use the Preorder Tree-Search
picture->ref();
paint->ref();
//Root
if (!func(picture, data)) {
picture->unref();
if (!func(paint, data)) {
paint->unref();
return Result::Success;
}
//Children
if (auto it = IteratorAccessor::iterator(picture)) {
if (auto it = IteratorAccessor::iterator(paint)) {
accessChildren(it, func, data);
delete(it);
}
picture->unref(false);
paint->unref(false);
return Result::Success;
}