mirror of
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140 lines
3.8 KiB
C
140 lines
3.8 KiB
C
/*
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* Copyright (c) 2020 - 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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#ifndef _TVG_CANVAS_H_
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#define _TVG_CANVAS_H_
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#include "tvgPaint.h"
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struct Canvas::Impl
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{
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list<Paint*> paints;
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RenderMethod* renderer;
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bool refresh = false; //if all paints should be updated by force.
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bool drawing = false; //on drawing condition?
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Impl(RenderMethod* pRenderer) : renderer(pRenderer)
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{
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renderer->ref();
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}
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~Impl()
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{
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//make it sure any deffered jobs
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if (renderer) renderer->sync();
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clearPaints();
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if (renderer && (renderer->unref() == 0)) delete(renderer);
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}
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void clearPaints()
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{
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for (auto paint : paints) {
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if (P(paint)->unref() == 0) delete(paint);
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}
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paints.clear();
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}
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Result push(unique_ptr<Paint> paint)
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{
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//You can not push paints during rendering.
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if (drawing) return Result::InsufficientCondition;
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auto p = paint.release();
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if (!p) return Result::MemoryCorruption;
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PP(p)->ref();
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paints.push_back(p);
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return update(p, true);
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}
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Result clear(bool paints, bool buffer)
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{
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if (drawing) return Result::InsufficientCondition;
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//Clear render target
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if (buffer) {
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if (!renderer || !renderer->clear()) return Result::InsufficientCondition;
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}
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if (paints) clearPaints();
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return Result::Success;
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}
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void needRefresh()
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{
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refresh = true;
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}
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Result update(Paint* paint, bool force)
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{
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if (paints.empty() || drawing || !renderer) return Result::InsufficientCondition;
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Array<RenderData> clips;
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auto flag = RenderUpdateFlag::None;
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if (refresh || force) flag = RenderUpdateFlag::All;
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if (paint) {
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paint->pImpl->update(renderer, nullptr, clips, 255, flag);
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} else {
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for (auto paint : paints) {
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paint->pImpl->update(renderer, nullptr, clips, 255, flag);
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}
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refresh = false;
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}
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return Result::Success;
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}
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Result draw()
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{
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if (drawing || paints.empty() || !renderer || !renderer->preRender()) return Result::InsufficientCondition;
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bool rendered = false;
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for (auto paint : paints) {
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if (paint->pImpl->render(renderer)) rendered = true;
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}
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if (!rendered || !renderer->postRender()) return Result::InsufficientCondition;
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drawing = true;
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return Result::Success;
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}
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Result sync()
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{
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if (!drawing) return Result::InsufficientCondition;
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if (renderer->sync()) {
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drawing = false;
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return Result::Success;
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}
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return Result::InsufficientCondition;
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}
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};
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#endif /* _TVG_CANVAS_H_ */
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