| /* |
| * Copyright 2019 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "modules/skottie/src/effects/Effects.h" |
| |
| #include "modules/skottie/src/SkottieJson.h" |
| #include "modules/skottie/src/Transform.h" |
| #include "modules/sksg/include/SkSGOpacityEffect.h" |
| #include "modules/sksg/include/SkSGTransform.h" |
| |
| namespace skottie { |
| namespace internal { |
| |
| namespace { |
| |
| class TransformEffectAdapter final : public DiscardableAdapterBase<TransformEffectAdapter, |
| sksg::OpacityEffect> { |
| public: |
| TransformEffectAdapter(const AnimationBuilder& abuilder, |
| const skjson::ObjectValue* jopacity, |
| const skjson::ObjectValue* jscale_uniform, |
| const skjson::ObjectValue* jscale_width, |
| const skjson::ObjectValue* jscale_height, |
| sk_sp<TransformAdapter2D> tadapter, |
| sk_sp<sksg::RenderNode> child) |
| : INHERITED(sksg::OpacityEffect::Make(std::move(child))) |
| , fTransformAdapter(std::move(tadapter)) { |
| this->bind(abuilder, jopacity , fOpacity ); |
| this->bind(abuilder, jscale_uniform, fUniformScale); |
| this->bind(abuilder, jscale_width , fScaleWidth ); |
| this->bind(abuilder, jscale_height , fScaleHeight ); |
| |
| this->attachDiscardableAdapter(fTransformAdapter); |
| } |
| |
| private: |
| void onSync() override { |
| this->node()->setOpacity(fOpacity * 0.01f); |
| |
| // In uniform mode, the scale is based solely in ScaleHeight. |
| const auto scale = SkVector::Make(SkScalarRoundToInt(fUniformScale) ? fScaleHeight |
| : fScaleWidth, |
| fScaleHeight); |
| |
| // NB: this triggers an transform adapter -> SG sync. |
| fTransformAdapter->setScale(scale); |
| } |
| |
| const sk_sp<TransformAdapter2D> fTransformAdapter; |
| |
| ScalarValue fOpacity = 100, |
| fUniformScale = 0, // bool |
| fScaleWidth = 100, |
| fScaleHeight = 100; |
| |
| using INHERITED = DiscardableAdapterBase<TransformEffectAdapter, sksg::OpacityEffect>; |
| }; |
| |
| } // namespace |
| |
| sk_sp<sksg::RenderNode> EffectBuilder::attachTransformEffect(const skjson::ArrayValue& jprops, |
| sk_sp<sksg::RenderNode> layer) const { |
| enum : size_t { |
| kAnchorPoint_Index = 0, |
| kPosition_Index = 1, |
| kUniformScale_Index = 2, |
| kScaleHeight_Index = 3, |
| kScaleWidth_Index = 4, |
| kSkew_Index = 5, |
| kSkewAxis_Index = 6, |
| kRotation_Index = 7, |
| kOpacity_Index = 8, |
| // kUseCompShutterAngle_Index = 9, |
| // kShutterAngle_Index = 10, |
| // kSampling_Index = 11, |
| }; |
| |
| auto transform_adapter = TransformAdapter2D::Make(*fBuilder, |
| GetPropValue(jprops, kAnchorPoint_Index), |
| GetPropValue(jprops, kPosition_Index), |
| nullptr, // scale is handled externally |
| GetPropValue(jprops, kRotation_Index), |
| GetPropValue(jprops, kSkew_Index), |
| GetPropValue(jprops, kSkewAxis_Index)); |
| if (!transform_adapter) { |
| return nullptr; |
| } |
| |
| auto transform_effect_node = sksg::TransformEffect::Make(std::move(layer), |
| transform_adapter->node()); |
| return fBuilder->attachDiscardableAdapter<TransformEffectAdapter> |
| (*fBuilder, |
| GetPropValue(jprops, kOpacity_Index), |
| GetPropValue(jprops, kUniformScale_Index), |
| GetPropValue(jprops, kScaleWidth_Index), |
| GetPropValue(jprops, kScaleHeight_Index), |
| std::move(transform_adapter), |
| std::move(transform_effect_node) |
| ); |
| } |
| |
| } // namespace internal |
| } // namespace skottie |