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This function computes a unique identifier value based on the provided string. You can use this to assign a unique ID to the Paint object. Experimental APIs: - uint32_t Accessorr::id(const char* name) - uint32_t tvg_accessor_id(const char* name)
106 lines
3.2 KiB
C++
106 lines
3.2 KiB
C++
/*
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* Copyright (c) 2021 - 2024 the ThorVG project. All rights reserved.
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*/
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#include "tvgIteratorAccessor.h"
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#include "tvgCompressor.h"
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/************************************************************************/
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/* Internal Class Implementation */
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/************************************************************************/
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static bool accessChildren(Iterator* it, function<bool(const Paint* paint, void* data)> func, void* data)
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{
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while (auto child = it->next()) {
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//Access the child
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if (!func(child, data)) return false;
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//Access the children of the child
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if (auto it2 = IteratorAccessor::iterator(child)) {
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if (!accessChildren(it2, func, data)) {
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delete(it2);
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return false;
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}
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delete(it2);
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}
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}
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return true;
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}
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/************************************************************************/
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/* External Class Implementation */
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/************************************************************************/
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TVG_DEPRECATED unique_ptr<Picture> Accessor::set(unique_ptr<Picture> picture, function<bool(const Paint* paint)> func) noexcept
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{
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auto backward = [](const tvg::Paint* paint, void* data) -> bool
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{
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auto func = reinterpret_cast<function<bool(const Paint* paint)>*>(data);
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if (!(*func)(paint)) return false;
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return true;
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};
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set(picture.get(), backward, reinterpret_cast<void*>(&func));
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return picture;
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}
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Result Accessor::set(const Picture* picture, function<bool(const Paint* paint, void* data)> func, void* data) noexcept
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{
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if (!picture || !func) return Result::InvalidArguments;
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//Use the Preorder Tree-Search
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//Root
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if (!func(picture, data)) return Result::Success;
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//Children
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if (auto it = IteratorAccessor::iterator(picture)) {
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accessChildren(it, func, data);
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delete(it);
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}
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return Result::Success;
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}
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uint32_t Accessor::id(const char* name) noexcept
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{
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return djb2Encode(name);
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}
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Accessor::~Accessor()
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{
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}
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Accessor::Accessor() : pImpl(nullptr)
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{
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}
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unique_ptr<Accessor> Accessor::gen() noexcept
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{
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return unique_ptr<Accessor>(new Accessor);
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}
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