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 "include/core/SkColor.h"
9 #include "include/core/SkRefCnt.h"
10 #include "modules/skottie/src/SkottiePriv.h"
11 #include "modules/skottie/src/SkottieValue.h"
12 #include "modules/skottie/src/animator/Animator.h"
13 #include "modules/skottie/src/effects/Effects.h"
14 #include "modules/sksg/include/SkSGColorFilter.h"
15 #include "modules/sksg/include/SkSGPaint.h"
16 #include "modules/sksg/include/SkSGRenderNode.h"
17
18 #include <cstddef>
19 #include <utility>
20
21 namespace skjson {
22 class ArrayValue;
23 }
24
25 namespace skottie {
26 namespace internal {
27
28 namespace {
29
30 class TritoneAdapter final : public AnimatablePropertyContainer {
31 public:
Make(const skjson::ArrayValue & jprops,sk_sp<sksg::RenderNode> layer,const AnimationBuilder & abuilder)32 static sk_sp<TritoneAdapter> Make(const skjson::ArrayValue& jprops,
33 sk_sp<sksg::RenderNode> layer,
34 const AnimationBuilder& abuilder) {
35 return sk_sp<TritoneAdapter>(new TritoneAdapter(jprops, std::move(layer), abuilder));
36 }
37
node() const38 const auto& node() const { return fCF; }
39
40 private:
TritoneAdapter(const skjson::ArrayValue & jprops,sk_sp<sksg::RenderNode> layer,const AnimationBuilder & abuilder)41 TritoneAdapter(const skjson::ArrayValue& jprops,
42 sk_sp<sksg::RenderNode> layer,
43 const AnimationBuilder& abuilder)
44 : fLoColorNode(sksg::Color::Make(SK_ColorBLACK))
45 , fMiColorNode(sksg::Color::Make(SK_ColorBLACK))
46 , fHiColorNode(sksg::Color::Make(SK_ColorBLACK))
47 , fCF(sksg::GradientColorFilter::Make(std::move(layer),
48 { fLoColorNode, fMiColorNode, fHiColorNode })) {
49 enum : size_t {
50 kHiColor_Index = 0,
51 kMiColor_Index = 1,
52 kLoColor_Index = 2,
53 kBlendAmount_Index = 3,
54 };
55
56 EffectBinder(jprops, abuilder, this)
57 .bind( kHiColor_Index, fHiColor)
58 .bind( kMiColor_Index, fMiColor)
59 .bind( kLoColor_Index, fLoColor)
60 .bind(kBlendAmount_Index, fWeight );
61 }
62
onSync()63 void onSync() override {
64 fLoColorNode->setColor(fLoColor);
65 fMiColorNode->setColor(fMiColor);
66 fHiColorNode->setColor(fHiColor);
67
68 // 100-based, inverted
69 fCF->setWeight((100 - fWeight) / 100);
70 }
71
72 const sk_sp<sksg::Color> fLoColorNode,
73 fMiColorNode,
74 fHiColorNode;
75 const sk_sp<sksg::GradientColorFilter> fCF;
76
77 ColorValue fLoColor,
78 fMiColor,
79 fHiColor;
80 ScalarValue fWeight = 0;
81 };
82
83 } // namespace
84
attachTritoneEffect(const skjson::ArrayValue & jprops,sk_sp<sksg::RenderNode> layer) const85 sk_sp<sksg::RenderNode> EffectBuilder::attachTritoneEffect(const skjson::ArrayValue& jprops,
86 sk_sp<sksg::RenderNode> layer) const {
87 return fBuilder->attachDiscardableAdapter<TritoneAdapter>(jprops, std::move(layer), *fBuilder);
88 }
89
90 } // namespace internal
91 } // namespace skottie
92