mirror of
https://github.com/thorvg/thorvg.git
synced 2025-06-07 13:13:23 +00:00
84 lines
3.2 KiB
C++
84 lines
3.2 KiB
C++
/*
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* Copyright (c) 2021 - 2025 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 "Example.h"
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/************************************************************************/
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/* ThorVG Drawing Contents */
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/************************************************************************/
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struct UserExample : tvgexam::Example
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{
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bool content(tvg::Canvas* canvas, uint32_t w, uint32_t h) override
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{
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if (!canvas) return false;
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//load the tvg file
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auto picture = tvg::Picture::gen();
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auto result = picture->load(EXAMPLE_DIR"/svg/favorite_on.svg");
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if (!tvgexam::verify(result)) return false;
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picture->size(w, h);
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auto accessor = unique_ptr<tvg::Accessor>(tvg::Accessor::gen());
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//The callback function from lambda expression.
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//This function will be called for every paint nodes of the picture tree.
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auto f = [](const tvg::Paint* paint, void* data) -> bool
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{
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if (paint->type() == tvg::Type::Shape) {
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auto shape = (tvg::Shape*) paint;
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//override color?
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uint8_t r, g, b;
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shape->fillColor(&r, &g, &b);
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if (r == 255 && g == 180 && b == 0)
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shape->fill(0, 0, 255);
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}
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//You can return false, to stop traversing immediately.
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return true;
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};
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if (!tvgexam::verify(accessor->set(picture, f, nullptr))) return false;
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// Try to retrieve the shape that corresponds to the SVG node with the unique ID "star".
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if (auto paint = picture->paint(tvg::Accessor::id("star"))) {
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auto shape = static_cast<tvg::Shape*>(const_cast<tvg::Paint*>(paint));
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shape->strokeFill(255, 255, 0);
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shape->strokeWidth(5);
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}
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canvas->push(picture);
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return true;
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}
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};
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/************************************************************************/
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/* Entry Point */
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/************************************************************************/
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int main(int argc, char **argv)
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{
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return tvgexam::main(new UserExample, argc, argv);
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}
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