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Diffstat (limited to 'thirdparty/thorvg/src/lib/tvgPaint.cpp')
| -rw-r--r-- | thirdparty/thorvg/src/lib/tvgPaint.cpp | 407 |
1 files changed, 407 insertions, 0 deletions
diff --git a/thirdparty/thorvg/src/lib/tvgPaint.cpp b/thirdparty/thorvg/src/lib/tvgPaint.cpp new file mode 100644 index 0000000000..30e82fbc60 --- /dev/null +++ b/thirdparty/thorvg/src/lib/tvgPaint.cpp @@ -0,0 +1,407 @@ +/* + * 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. + */ +#include "tvgMath.h" +#include "tvgPaint.h" + +/************************************************************************/ +/* Internal Class Implementation */ +/************************************************************************/ + + +static bool _compFastTrack(Paint* cmpTarget, const RenderTransform* pTransform, RenderTransform* rTransform, RenderRegion& viewport) +{ + /* Access Shape class by Paint is bad... but it's ok still it's an internal usage. */ + auto shape = static_cast<Shape*>(cmpTarget); + + //Rectangle Candidates? + const Point* pts; + if (shape->pathCoords(&pts) != 4) return false; + + if (rTransform) rTransform->update(); + + //No rotational. + if (pTransform && !mathRightAngle(&pTransform->m)) return false; + if (rTransform && !mathRightAngle(&rTransform->m)) return false; + + //Perpendicular Rectangle? + auto pt1 = pts + 0; + auto pt2 = pts + 1; + auto pt3 = pts + 2; + auto pt4 = pts + 3; + + if ((mathEqual(pt1->x, pt2->x) && mathEqual(pt2->y, pt3->y) && mathEqual(pt3->x, pt4->x) && mathEqual(pt1->y, pt4->y)) || + (mathEqual(pt2->x, pt3->x) && mathEqual(pt1->y, pt2->y) && mathEqual(pt1->x, pt4->x) && mathEqual(pt3->y, pt4->y))) { + + auto v1 = *pt1; + auto v2 = *pt3; + + if (rTransform) { + mathMultiply(&v1, &rTransform->m); + mathMultiply(&v2, &rTransform->m); + } + + if (pTransform) { + mathMultiply(&v1, &pTransform->m); + mathMultiply(&v2, &pTransform->m); + } + + //sorting + if (v1.x > v2.x) { + auto tmp = v2.x; + v2.x = v1.x; + v1.x = tmp; + } + + if (v1.y > v2.y) { + auto tmp = v2.y; + v2.y = v1.y; + v1.y = tmp; + } + + viewport.x = static_cast<int32_t>(v1.x); + viewport.y = static_cast<int32_t>(v1.y); + viewport.w = static_cast<int32_t>(v2.x - v1.x + 0.5f); + viewport.h = static_cast<int32_t>(v2.y - v1.y + 0.5f); + + if (viewport.w < 0) viewport.w = 0; + if (viewport.h < 0) viewport.h = 0; + + return true; + } + + return false; +} + + +Paint* Paint::Impl::duplicate() +{ + auto ret = smethod->duplicate(); + + //duplicate Transform + if (rTransform) { + ret->pImpl->rTransform = new RenderTransform(); + *ret->pImpl->rTransform = *rTransform; + ret->pImpl->renderFlag |= RenderUpdateFlag::Transform; + } + + ret->pImpl->opacity = opacity; + + if (compData) ret->pImpl->composite(ret, compData->target->duplicate(), compData->method); + + return ret; +} + + +bool Paint::Impl::rotate(float degree) +{ + if (rTransform) { + if (mathEqual(degree, rTransform->degree)) return true; + } else { + if (mathZero(degree)) return true; + rTransform = new RenderTransform(); + } + rTransform->degree = degree; + if (!rTransform->overriding) renderFlag |= RenderUpdateFlag::Transform; + + return true; +} + + +bool Paint::Impl::scale(float factor) +{ + if (rTransform) { + if (mathEqual(factor, rTransform->scale)) return true; + } else { + if (mathZero(factor)) return true; + rTransform = new RenderTransform(); + } + rTransform->scale = factor; + if (!rTransform->overriding) renderFlag |= RenderUpdateFlag::Transform; + + return true; +} + + +bool Paint::Impl::translate(float x, float y) +{ + if (rTransform) { + if (mathEqual(x, rTransform->x) && mathEqual(y, rTransform->y)) return true; + } else { + if (mathZero(x) && mathZero(y)) return true; + rTransform = new RenderTransform(); + } + rTransform->x = x; + rTransform->y = y; + if (!rTransform->overriding) renderFlag |= RenderUpdateFlag::Transform; + + return true; +} + + +bool Paint::Impl::render(RenderMethod& renderer) +{ + Compositor* cmp = nullptr; + + //OPTIMIZE_ME: Can we replace the simple AlphaMasking with ClipPath? + + /* Note: only ClipPath is processed in update() step. + Create a composition image. */ + if (compData && compData->method != CompositeMethod::ClipPath && !(compData->target->pImpl->ctxFlag & ContextFlag::FastTrack)) { + auto region = smethod->bounds(renderer); + if (region.w == 0 || region.h == 0) return true; + cmp = renderer.target(region); + renderer.beginComposite(cmp, CompositeMethod::None, 255); + compData->target->pImpl->render(renderer); + } + + if (cmp) renderer.beginComposite(cmp, compData->method, compData->target->pImpl->opacity); + + auto ret = smethod->render(renderer); + + if (cmp) renderer.endComposite(cmp); + + return ret; +} + + +void* Paint::Impl::update(RenderMethod& renderer, const RenderTransform* pTransform, uint32_t opacity, Array<RenderData>& clips, uint32_t pFlag) +{ + if (renderFlag & RenderUpdateFlag::Transform) { + if (!rTransform) return nullptr; + if (!rTransform->update()) { + delete(rTransform); + rTransform = nullptr; + } + } + + /* 1. Composition Pre Processing */ + void *tdata = nullptr; + RenderRegion viewport; + bool compFastTrack = false; + + if (compData) { + auto target = compData->target; + auto method = compData->method; + target->pImpl->ctxFlag &= ~ContextFlag::FastTrack; //reset + + /* If transform has no rotation factors && ClipPath / AlphaMasking is a simple rectangle, + we can avoid regular ClipPath / AlphaMasking sequence but use viewport for performance */ + auto tryFastTrack = false; + if (method == CompositeMethod::ClipPath) tryFastTrack = true; + else if (method == CompositeMethod::AlphaMask && target->identifier() == TVG_CLASS_ID_SHAPE) { + auto shape = static_cast<Shape*>(target); + uint8_t a; + shape->fillColor(nullptr, nullptr, nullptr, &a); + if (a == 255 && shape->opacity() == 255 && !shape->fill()) tryFastTrack = true; + } + if (tryFastTrack) { + RenderRegion viewport2; + if ((compFastTrack = _compFastTrack(target, pTransform, target->pImpl->rTransform, viewport2))) { + viewport = renderer.viewport(); + viewport2.intersect(viewport); + renderer.viewport(viewport2); + target->pImpl->ctxFlag |= ContextFlag::FastTrack; + } + } + if (!compFastTrack) { + tdata = target->pImpl->update(renderer, pTransform, 255, clips, pFlag); + if (method == CompositeMethod::ClipPath) clips.push(tdata); + } + } + + /* 2. Main Update */ + void *edata = nullptr; + auto newFlag = static_cast<RenderUpdateFlag>(pFlag | renderFlag); + renderFlag = RenderUpdateFlag::None; + opacity = (opacity * this->opacity) / 255; + + if (rTransform && pTransform) { + RenderTransform outTransform(pTransform, rTransform); + edata = smethod->update(renderer, &outTransform, opacity, clips, newFlag); + } else { + auto outTransform = pTransform ? pTransform : rTransform; + edata = smethod->update(renderer, outTransform, opacity, clips, newFlag); + } + + /* 3. Composition Post Processing */ + if (compFastTrack) renderer.viewport(viewport); + else if (tdata && compData->method == CompositeMethod::ClipPath) clips.pop(); + + return edata; +} + + +bool Paint::Impl::bounds(float* x, float* y, float* w, float* h, bool transformed) +{ + Matrix* m = nullptr; + + //Case: No transformed, quick return! + if (!transformed || !(m = this->transform())) return smethod->bounds(x, y, w, h); + + //Case: Transformed + auto tx = 0.0f; + auto ty = 0.0f; + auto tw = 0.0f; + auto th = 0.0f; + + auto ret = smethod->bounds(&tx, &ty, &tw, &th); + + //Get vertices + Point pt[4] = {{tx, ty}, {tx + tw, ty}, {tx + tw, ty + th}, {tx, ty + th}}; + + //New bounding box + auto x1 = FLT_MAX; + auto y1 = FLT_MAX; + auto x2 = -FLT_MAX; + auto y2 = -FLT_MAX; + + //Compute the AABB after transformation + for (int i = 0; i < 4; i++) { + mathMultiply(&pt[i], m); + + if (pt[i].x < x1) x1 = pt[i].x; + if (pt[i].x > x2) x2 = pt[i].x; + if (pt[i].y < y1) y1 = pt[i].y; + if (pt[i].y > y2) y2 = pt[i].y; + } + + if (x) *x = x1; + if (y) *y = y1; + if (w) *w = x2 - x1; + if (h) *h = y2 - y1; + + return ret; +} + + +/************************************************************************/ +/* External Class Implementation */ +/************************************************************************/ + +Paint :: Paint() : pImpl(new Impl()) +{ +} + + +Paint :: ~Paint() +{ + delete(pImpl); +} + + +Result Paint::rotate(float degree) noexcept +{ + if (pImpl->rotate(degree)) return Result::Success; + return Result::FailedAllocation; +} + + +Result Paint::scale(float factor) noexcept +{ + if (pImpl->scale(factor)) return Result::Success; + return Result::FailedAllocation; +} + + +Result Paint::translate(float x, float y) noexcept +{ + if (pImpl->translate(x, y)) return Result::Success; + return Result::FailedAllocation; +} + + +Result Paint::transform(const Matrix& m) noexcept +{ + if (pImpl->transform(m)) return Result::Success; + return Result::FailedAllocation; +} + + +Matrix Paint::transform() noexcept +{ + auto pTransform = pImpl->transform(); + if (pTransform) return *pTransform; + return {1, 0, 0, 0, 1, 0, 0, 0, 1}; +} + + +TVG_DEPRECATED Result Paint::bounds(float* x, float* y, float* w, float* h) const noexcept +{ + return this->bounds(x, y, w, h, false); +} + + +Result Paint::bounds(float* x, float* y, float* w, float* h, bool transform) const noexcept +{ + if (pImpl->bounds(x, y, w, h, transform)) return Result::Success; + return Result::InsufficientCondition; +} + + +Paint* Paint::duplicate() const noexcept +{ + return pImpl->duplicate(); +} + + +Result Paint::composite(std::unique_ptr<Paint> target, CompositeMethod method) noexcept +{ + auto p = target.release(); + if (pImpl->composite(this, p, method)) return Result::Success; + if (p) delete(p); + return Result::InvalidArguments; +} + + +CompositeMethod Paint::composite(const Paint** target) const noexcept +{ + if (pImpl->compData) { + if (target) *target = pImpl->compData->target; + return pImpl->compData->method; + } else { + if (target) *target = nullptr; + return CompositeMethod::None; + } +} + + +Result Paint::opacity(uint8_t o) noexcept +{ + if (pImpl->opacity == o) return Result::Success; + + pImpl->opacity = o; + pImpl->renderFlag |= RenderUpdateFlag::Color; + + return Result::Success; +} + + +uint8_t Paint::opacity() const noexcept +{ + return pImpl->opacity; +} + + +uint32_t Paint::identifier() const noexcept +{ + return pImpl->id; +}
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