mirror of
https://github.com/thorvg/thorvg.git
synced 2025-06-07 21:23:32 +00:00
97 lines
3.3 KiB
C++
97 lines
3.3 KiB
C++
/*
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* Copyright (c) 2023 - 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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unique_ptr<tvg::Animation> animation;
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bool content(tvg::Canvas* canvas, uint32_t w, uint32_t h) override
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{
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//The default font for fallback in case
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tvg::Text::load(EXAMPLE_DIR"/font/Arial.ttf");
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//Animation Controller
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animation = unique_ptr<tvg::Animation>(tvg::Animation::gen());
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auto picture = animation->picture();
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//Background
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auto shape = tvg::Shape::gen();
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shape->appendRect(0, 0, w, h);
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shape->fill(50, 50, 50);
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canvas->push(shape);
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if (!tvgexam::verify(picture->load(EXAMPLE_DIR"/lottie/sample.json"))) return false;
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//image scaling preserving its aspect ratio
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float scale;
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float shiftX = 0.0f, shiftY = 0.0f;
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float w2, h2;
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picture->size(&w2, &h2);
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if (w2 > h2) {
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scale = w / w2;
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shiftY = (h - h2 * scale) * 0.5f;
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} else {
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scale = h / h2;
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shiftX = (w - w2 * scale) * 0.5f;
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}
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picture->scale(scale);
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picture->translate(shiftX, shiftY);
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canvas->push(picture);
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return true;
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}
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bool update(tvg::Canvas* canvas, uint32_t elapsed) override
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{
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if (!canvas) return false;
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auto progress = tvgexam::progress(elapsed, animation->duration());
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//Update animation frame only when it's changed
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if (animation->frame(animation->totalFrame() * progress) == tvg::Result(0)) {
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canvas->update();
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return true;
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}
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return false;
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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, false, 1024, 1024, 4, true);
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}
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