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The viewport function defines the rectangular area of the canvas that will be used for drawing operations. It is used to clip the rendering output to the boundaries of the rectangle. Apps can use this function to set the drawing region within the canvas. When the ThorVG canvas is partially inside the screen area such as during scrolling it could help enhance rendering performance. New Experimental API: - Result Canvas::viewport(int32_t x, int32_t y, int32_t w, int32_t h) noexcept; Issue: https://github.com/thorvg/thorvg/issues/2274
93 lines
2.5 KiB
C++
93 lines
2.5 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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#include "tvgCanvas.h"
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/************************************************************************/
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/* External Class Implementation */
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/************************************************************************/
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Canvas::Canvas(RenderMethod *pRenderer):pImpl(new Impl(pRenderer))
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{
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}
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Canvas::~Canvas()
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{
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delete(pImpl);
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}
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Result Canvas::reserve(TVG_UNUSED uint32_t n) noexcept
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{
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return Result::NonSupport;
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}
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list<Paint*>& Canvas::paints() noexcept
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{
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return pImpl->paints;
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}
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Result Canvas::push(unique_ptr<Paint> paint) noexcept
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{
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return pImpl->push(std::move(paint));
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}
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Result Canvas::clear(bool free) noexcept
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{
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return pImpl->clear(free);
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}
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Result Canvas::draw() noexcept
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{
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TVGLOG("RENDERER", "Draw S. -------------------------------- Canvas(%p)", this);
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auto ret = pImpl->draw();
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TVGLOG("RENDERER", "Draw E. -------------------------------- Canvas(%p)", this);
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return ret;
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}
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Result Canvas::update(Paint* paint) noexcept
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{
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TVGLOG("RENDERER", "Update S. ------------------------------ Canvas(%p)", this);
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auto ret = pImpl->update(paint, false);
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TVGLOG("RENDERER", "Update E. ------------------------------ Canvas(%p)", this);
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return ret;
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}
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Result Canvas::viewport(int32_t x, int32_t y, int32_t w, int32_t h) noexcept
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{
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return pImpl->viewport(x, y, w, h);
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}
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Result Canvas::sync() noexcept
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{
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return pImpl->sync();
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}
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