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/*
* Copyright (c) 2020 - 2023 the ThorVG project. All rights reserved.
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*/
#ifndef _TVG_CANVAS_IMPL_H_
#define _TVG_CANVAS_IMPL_H_
#include "tvgPaint.h"
/************************************************************************/
/* Internal Class Implementation */
/************************************************************************/
struct Canvas::Impl
{
Array<Paint*> paints;
RenderMethod* renderer;
bool refresh = false; //if all paints should be updated by force.
bool drawing = false; //on drawing condition?
Impl(RenderMethod* pRenderer):renderer(pRenderer)
{
}
~Impl()
{
clear(true);
delete(renderer);
}
Result push(unique_ptr<Paint> paint)
{
//You can not push paints during rendering.
if (drawing) return Result::InsufficientCondition;
auto p = paint.release();
if (!p) return Result::MemoryCorruption;
paints.push(p);
return update(p, true);
}
Result clear(bool free)
{
//Clear render target before drawing
if (!renderer || !renderer->clear()) return Result::InsufficientCondition;
//Free paints
for (auto paint = paints.data; paint < (paints.data + paints.count); ++paint) {
(*paint)->pImpl->dispose(*renderer);
if (free) delete(*paint);
}
paints.clear();
drawing = false;
return Result::Success;
}
void needRefresh()
{
refresh = true;
}
Result update(Paint* paint, bool force)
{
if (paints.count == 0 || drawing || !renderer) return Result::InsufficientCondition;
Array<RenderData> clips;
auto flag = RenderUpdateFlag::None;
if (refresh || force) flag = RenderUpdateFlag::All;
//Update single paint node
if (paint) {
//Optimize Me: Can we skip the searching?
for (auto paint2 = paints.data; paint2 < (paints.data + paints.count); ++paint2) {
if ((*paint2) == paint) {
paint->pImpl->update(*renderer, nullptr, 255, clips, flag);
return Result::Success;
}
}
return Result::InvalidArguments;
//Update all retained paint nodes
} else {
for (auto paint = paints.data; paint < (paints.data + paints.count); ++paint) {
(*paint)->pImpl->update(*renderer, nullptr, 255, clips, flag);
}
}
refresh = false;
return Result::Success;
}
Result draw()
{
if (drawing || paints.count == 0 || !renderer || !renderer->preRender()) return Result::InsufficientCondition;
bool rendered = false;
for (auto paint = paints.data; paint < (paints.data + paints.count); ++paint) {
if ((*paint)->pImpl->render(*renderer)) rendered = true;
}
if (!rendered || !renderer->postRender()) return Result::InsufficientCondition;
drawing = true;
return Result::Success;
}
Result sync()
{
if (!drawing) return Result::InsufficientCondition;
if (renderer->sync()) {
drawing = false;
return Result::Success;
}
return Result::InsufficientCondition;
}
};
#endif /* _TVG_CANVAS_IMPL_H_ */
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