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Optimize masks with feather and opacity. (#528)
* Move to new branch. * Adjust Co-authored-by: fusionxu <fusionxu@tencent.com>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,151 @@ | ||
| ///////////////////////////////////////////////////////////////////////////////////////////////// | ||
| // | ||
| // Tencent is pleased to support the open source community by making libpag available. | ||
| // | ||
| // Copyright (C) 2021 THL A29 Limited, a Tencent company. All rights reserved. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file | ||
| // except in compliance with the License. You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // unless required by applicable law or agreed to in writing, software distributed under the | ||
| // license is distributed on an "as is" basis, without warranties or conditions of any kind, | ||
| // either express or implied. see the license for the specific language governing permissions | ||
| // and limitations under the license. | ||
| // | ||
| ///////////////////////////////////////////////////////////////////////////////////////////////// | ||
|
|
||
| #include "FeatherMask.h" | ||
| #include "pag/file.h" | ||
| #include "rendering/caches/RenderCache.h" | ||
| #include "rendering/filters/gaussianblur/GaussianBlurFilter.h" | ||
| #include "rendering/utils/PathUtil.h" | ||
| #include "tgfx/core/Mask.h" | ||
| #include "tgfx/gpu/Canvas.h" | ||
| #include "tgfx/gpu/Surface.h" | ||
|
|
||
| namespace pag { | ||
| std::shared_ptr<Graphic> FeatherMask::MakeFrom(const std::vector<MaskData*>& masks, | ||
| Frame layerFrame) { | ||
| if (masks.empty()) { | ||
| return nullptr; | ||
| } | ||
| return std::shared_ptr<Graphic>(new FeatherMask(masks, layerFrame)); | ||
| } | ||
|
|
||
| tgfx::Rect MeasureFeatherMaskBounds(const std::vector<MaskData*>& masks, Frame layerFrame) { | ||
| auto maskBounds = tgfx::Rect::MakeLTRB(0, 0, FLT_MIN, FLT_MIN); | ||
| for (auto mask : masks) { | ||
| auto maskPath = ToPath(*(mask->maskPath->getValueAt(layerFrame))); | ||
| auto expansion = mask->maskExpansion->getValueAt(layerFrame); | ||
| ExpandPath(&maskPath, expansion); | ||
| auto bounds = maskPath.getBounds(); | ||
| if (bounds.right > maskBounds.right) { | ||
| maskBounds.right = bounds.right; | ||
| } | ||
| if (bounds.bottom > maskBounds.bottom) { | ||
| maskBounds.bottom = bounds.bottom; | ||
| } | ||
| } | ||
| maskBounds.outset(maskBounds.width() * 0.1, maskBounds.height() * 0.1); | ||
| return maskBounds; | ||
| } | ||
|
|
||
| FeatherMask::FeatherMask(const std::vector<MaskData*>& masks, Frame layerFrame) | ||
| : masks(masks), layerFrame(layerFrame) { | ||
| bounds = MeasureFeatherMaskBounds(masks, layerFrame); | ||
| } | ||
|
|
||
| void FeatherMask::measureBounds(tgfx::Rect* rect) const { | ||
| *rect = bounds; | ||
| } | ||
|
|
||
| bool FeatherMask::hitTest(RenderCache*, float, float) { | ||
| return false; | ||
| } | ||
|
|
||
| bool FeatherMask::getPath(tgfx::Path*) const { | ||
| return false; | ||
| } | ||
|
|
||
| void FeatherMask::prepare(RenderCache*) const { | ||
| } | ||
|
|
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| std::unique_ptr<Snapshot> FeatherMask::drawFeatherMask(const std::vector<MaskData*>& masks, | ||
| Frame layerFrame, RenderCache* cache, | ||
| float scaleFactor) const { | ||
| bool isFirst = true; | ||
| auto surface = tgfx::Surface::Make(cache->getContext(), | ||
| static_cast<int>(ceilf(bounds.width() * scaleFactor)), | ||
| static_cast<int>(ceilf(bounds.height() * scaleFactor)), true); | ||
| if (surface == nullptr) { | ||
| return nullptr; | ||
| } | ||
| auto canvas = surface->getCanvas(); | ||
| canvas->setMatrix(tgfx::Matrix::MakeTrans(bounds.x(), bounds.y())); | ||
| for (auto& mask : masks) { | ||
| auto path = mask->maskPath->getValueAt(layerFrame); | ||
| if (path == nullptr || !path->isClosed() || mask->maskMode == MaskMode::None) { | ||
| continue; | ||
| } | ||
| auto maskPath = ToPath(*path); | ||
| auto expansion = mask->maskExpansion->getValueAt(layerFrame); | ||
| ExpandPath(&maskPath, expansion); | ||
| auto inverted = mask->inverted; | ||
| if (isFirst) { | ||
| if (mask->maskMode == MaskMode::Subtract) { | ||
| inverted = !inverted; | ||
| } | ||
| } | ||
| if (inverted) { | ||
| maskPath.toggleInverseFillType(); | ||
| } | ||
| auto maskBounds = maskPath.getBounds(); | ||
| auto width = static_cast<int>(ceilf(maskBounds.width() * scaleFactor)); | ||
| auto height = static_cast<int>(ceilf(maskBounds.height() * scaleFactor)); | ||
| if (width == 0.0 || height == 0.0) { | ||
| continue; | ||
| } | ||
| tgfx::Paint maskPaint; | ||
| float alpha = mask->maskOpacity->getValueAt(layerFrame) / 255.0; | ||
| maskPaint.setAlpha(alpha); | ||
| auto maskSurface = tgfx::Surface::Make(cache->getContext(), width, height, true); | ||
| auto maskCanvas = maskSurface->getCanvas(); | ||
| maskCanvas->setMatrix(tgfx::Matrix::MakeTrans(-maskBounds.x(), -maskBounds.y())); | ||
| maskCanvas->drawPath(maskPath, maskPaint); | ||
| auto maskTexture = maskSurface->getTexture(); | ||
| tgfx::Paint blurPaint; | ||
| float blurrinessX = 0.0f; | ||
| float blurrinessY = 0.0f; | ||
| if (mask->maskFeather != nullptr) { | ||
| blurrinessX = mask->maskFeather->getValueAt(layerFrame).x * scaleFactor; | ||
| blurrinessY = mask->maskFeather->getValueAt(layerFrame).y * scaleFactor; | ||
| tgfx::TileMode tileMode = tgfx::TileMode::Decal; | ||
| tgfx::Rect cropRect = tgfx::Rect::MakeEmpty(); | ||
| auto blurFilter = tgfx::ImageFilter::Blur(blurrinessX, blurrinessY, tileMode, cropRect); | ||
| blurPaint.setImageFilter(blurFilter); | ||
| } | ||
| canvas->save(); | ||
| canvas->setMatrix(tgfx::Matrix::MakeTrans(maskBounds.x(), maskBounds.y())); | ||
| canvas->drawTexture(maskTexture, &blurPaint); | ||
| canvas->restore(); | ||
| } | ||
|
|
||
| auto texture = surface->getTexture(); | ||
| if (texture == nullptr) { | ||
| return nullptr; | ||
| } | ||
|
|
||
| auto matrix = tgfx::Matrix::MakeScale(scaleFactor); | ||
| auto drawingMatrix = tgfx::Matrix::I(); | ||
| matrix.invert(&drawingMatrix); | ||
|
|
||
| return std::make_unique<Snapshot>(texture, drawingMatrix); | ||
| } | ||
|
|
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| void FeatherMask::draw(tgfx::Canvas* canvas, RenderCache* renderCache) const { | ||
| auto snapshot = drawFeatherMask(masks, layerFrame, renderCache); | ||
| canvas->drawTexture(snapshot->getTexture()); | ||
| } | ||
| } // namespace pag |
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