1 /*
2 * Copyright 2019 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8 #include "modules/skottie/src/effects/Effects.h"
9
10 #include "modules/skottie/src/Adapter.h"
11 #include "modules/skottie/src/SkottieValue.h"
12 #include "modules/sksg/include/SkSGColorFilter.h"
13 #include "modules/sksg/include/SkSGPaint.h"
14 #include "src/utils/SkJSON.h"
15
16 namespace skottie {
17 namespace internal {
18
19 namespace {
20
21 class TritoneAdapter final : public AnimatablePropertyContainer {
22 public:
Make(const skjson::ArrayValue & jprops,sk_sp<sksg::RenderNode> layer,const AnimationBuilder & abuilder)23 static sk_sp<TritoneAdapter> Make(const skjson::ArrayValue& jprops,
24 sk_sp<sksg::RenderNode> layer,
25 const AnimationBuilder& abuilder) {
26 return sk_sp<TritoneAdapter>(new TritoneAdapter(jprops, std::move(layer), abuilder));
27 }
28
node() const29 const auto& node() const { return fCF; }
30
31 private:
TritoneAdapter(const skjson::ArrayValue & jprops,sk_sp<sksg::RenderNode> layer,const AnimationBuilder & abuilder)32 TritoneAdapter(const skjson::ArrayValue& jprops,
33 sk_sp<sksg::RenderNode> layer,
34 const AnimationBuilder& abuilder)
35 : fLoColorNode(sksg::Color::Make(SK_ColorBLACK))
36 , fMiColorNode(sksg::Color::Make(SK_ColorBLACK))
37 , fHiColorNode(sksg::Color::Make(SK_ColorBLACK))
38 , fCF(sksg::GradientColorFilter::Make(std::move(layer),
39 { fLoColorNode, fMiColorNode, fHiColorNode })) {
40 enum : size_t {
41 kHiColor_Index = 0,
42 kMiColor_Index = 1,
43 kLoColor_Index = 2,
44 kBlendAmount_Index = 3,
45 };
46
47 EffectBinder(jprops, abuilder, this)
48 .bind( kHiColor_Index, fHiColor)
49 .bind( kMiColor_Index, fMiColor)
50 .bind( kLoColor_Index, fLoColor)
51 .bind(kBlendAmount_Index, fWeight );
52 }
53
onSync()54 void onSync() override {
55 fLoColorNode->setColor(fLoColor);
56 fMiColorNode->setColor(fMiColor);
57 fHiColorNode->setColor(fHiColor);
58
59 // 100-based, inverted
60 fCF->setWeight((100 - fWeight) / 100);
61 }
62
63 const sk_sp<sksg::Color> fLoColorNode,
64 fMiColorNode,
65 fHiColorNode;
66 const sk_sp<sksg::GradientColorFilter> fCF;
67
68 VectorValue fLoColor,
69 fMiColor,
70 fHiColor;
71 ScalarValue fWeight = 0;
72 };
73
74 } // namespace
75
attachTritoneEffect(const skjson::ArrayValue & jprops,sk_sp<sksg::RenderNode> layer) const76 sk_sp<sksg::RenderNode> EffectBuilder::attachTritoneEffect(const skjson::ArrayValue& jprops,
77 sk_sp<sksg::RenderNode> layer) const {
78 return fBuilder->attachDiscardableAdapter<TritoneAdapter>(jprops, std::move(layer), *fBuilder);
79 }
80
81 } // namespace internal
82 } // namespace skottie
83