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Diffstat (limited to 'thirdparty/thorvg/src/lib/tvgSceneImpl.h')
| -rw-r--r-- | thirdparty/thorvg/src/lib/tvgSceneImpl.h | 217 |
1 files changed, 217 insertions, 0 deletions
diff --git a/thirdparty/thorvg/src/lib/tvgSceneImpl.h b/thirdparty/thorvg/src/lib/tvgSceneImpl.h new file mode 100644 index 0000000000..de94a66e2f --- /dev/null +++ b/thirdparty/thorvg/src/lib/tvgSceneImpl.h @@ -0,0 +1,217 @@ +/* + * Copyright (c) 2020-2021 Samsung Electronics Co., Ltd. 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_SCENE_IMPL_H_ +#define _TVG_SCENE_IMPL_H_ + +#include <float.h> +#include "tvgPaint.h" + +/************************************************************************/ +/* Internal Class Implementation */ +/************************************************************************/ + +struct SceneIterator : Iterator +{ + Array<Paint*>* paints; + uint32_t idx = 0; + + SceneIterator(Array<Paint*>* p) : paints(p) + { + } + + const Paint* next() override + { + if (idx >= paints->count) return nullptr; + return paints->data[idx++]; + } + + uint32_t count() override + { + return paints->count; + } + + void begin() override + { + idx = 0; + } +}; + +struct Scene::Impl +{ + Array<Paint*> paints; + uint8_t opacity; //for composition + RenderMethod* renderer = nullptr; //keep it for explicit clear + + ~Impl() + { + for (auto paint = paints.data; paint < (paints.data + paints.count); ++paint) { + delete(*paint); + } + } + + bool dispose(RenderMethod& renderer) + { + for (auto paint = paints.data; paint < (paints.data + paints.count); ++paint) { + (*paint)->pImpl->dispose(renderer); + } + + this->renderer = nullptr; + + return true; + } + + bool needComposition(uint32_t opacity) + { + //Half translucent requires intermediate composition. + if (opacity == 255 || opacity == 0) return false; + + //If scene has several children or only scene, it may require composition. + if (paints.count > 1) return true; + if (paints.count == 1 && (*paints.data)->identifier() == TVG_CLASS_ID_SCENE) return true; + return false; + } + + void* update(RenderMethod &renderer, const RenderTransform* transform, uint32_t opacity, Array<RenderData>& clips, RenderUpdateFlag flag) + { + /* Overriding opacity value. If this scene is half-translucent, + It must do intermeidate composition with that opacity value. */ + this->opacity = static_cast<uint8_t>(opacity); + if (needComposition(opacity)) opacity = 255; + + for (auto paint = paints.data; paint < (paints.data + paints.count); ++paint) { + (*paint)->pImpl->update(renderer, transform, opacity, clips, static_cast<uint32_t>(flag)); + } + + /* FXIME: it requires to return list of children engine data + This is necessary for scene composition */ + + this->renderer = &renderer; + + return nullptr; + } + + bool render(RenderMethod& renderer) + { + Compositor* cmp = nullptr; + + if (needComposition(opacity)) { + cmp = renderer.target(bounds(renderer)); + renderer.beginComposite(cmp, CompositeMethod::None, opacity); + } + + for (auto paint = paints.data; paint < (paints.data + paints.count); ++paint) { + if (!(*paint)->pImpl->render(renderer)) return false; + } + + if (cmp) renderer.endComposite(cmp); + + return true; + } + + RenderRegion bounds(RenderMethod& renderer) const + { + if (paints.count == 0) return {0, 0, 0, 0}; + + int32_t x1 = INT32_MAX; + int32_t y1 = INT32_MAX; + int32_t x2 = 0; + int32_t y2 = 0; + + for (auto paint = paints.data; paint < (paints.data + paints.count); ++paint) { + auto region = (*paint)->pImpl->bounds(renderer); + + //Merge regions + if (region.x < x1) x1 = region.x; + if (x2 < region.x + region.w) x2 = (region.x + region.w); + if (region.y < y1) y1 = region.y; + if (y2 < region.y + region.h) y2 = (region.y + region.h); + } + + return {x1, y1, (x2 - x1), (y2 - y1)}; + } + + bool bounds(float* px, float* py, float* pw, float* ph) + { + if (paints.count == 0) return false; + + auto x1 = FLT_MAX; + auto y1 = FLT_MAX; + auto x2 = -FLT_MAX; + auto y2 = -FLT_MAX; + + for (auto paint = paints.data; paint < (paints.data + paints.count); ++paint) { + auto x = FLT_MAX; + auto y = FLT_MAX; + auto w = 0.0f; + auto h = 0.0f; + + if ((*paint)->bounds(&x, &y, &w, &h, true) != tvg::Result::Success) continue; + + //Merge regions + if (x < x1) x1 = x; + if (x2 < x + w) x2 = (x + w); + if (y < y1) y1 = y; + if (y2 < y + h) y2 = (y + h); + } + + if (px) *px = x1; + if (py) *py = y1; + if (pw) *pw = (x2 - x1); + if (ph) *ph = (y2 - y1); + + return true; + } + + Paint* duplicate() + { + auto ret = Scene::gen(); + + auto dup = ret.get()->pImpl; + + dup->paints.reserve(paints.count); + + for (auto paint = paints.data; paint < (paints.data + paints.count); ++paint) { + dup->paints.push((*paint)->duplicate()); + } + + return ret.release(); + } + + void clear(bool free) + { + auto dispose = renderer ? true : false; + + for (auto paint = paints.data; paint < (paints.data + paints.count); ++paint) { + if (dispose) (*paint)->pImpl->dispose(*renderer); + if (free) delete(*paint); + } + paints.clear(); + renderer = nullptr; + } + + Iterator* iterator() + { + return new SceneIterator(&paints); + } +}; + +#endif //_TVG_SCENE_IMPL_H_ |