/src/skia/modules/skottie/src/text/TextAnimator.h
Line | Count | Source (jump to first uncovered line) |
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 | | #ifndef SkottieTextAnimator_DEFINED |
9 | | #define SkottieTextAnimator_DEFINED |
10 | | |
11 | | #include "include/core/SkM44.h" |
12 | | #include "include/core/SkRefCnt.h" |
13 | | #include "modules/skottie/src/SkottiePriv.h" |
14 | | #include "modules/skottie/src/SkottieValue.h" |
15 | | #include "modules/sksg/include/SkSGScene.h" |
16 | | |
17 | | #include <memory> |
18 | | #include <vector> |
19 | | |
20 | | namespace skottie { |
21 | | namespace internal { |
22 | | |
23 | | class AnimatablePropertyContainer; |
24 | | class AnimationBuilder; |
25 | | class RangeSelector; |
26 | | |
27 | | class TextAnimator final : public SkNVRefCnt<TextAnimator> { |
28 | | public: |
29 | | static sk_sp<TextAnimator> Make(const skjson::ObjectValue*, |
30 | | const AnimationBuilder*, |
31 | | AnimatablePropertyContainer* acontainer); |
32 | | |
33 | | // Direct mapping of AE properties. |
34 | | struct AnimatedProps { |
35 | | VectorValue position, |
36 | | scale = { 100, 100, 100 }, |
37 | | fill_color, |
38 | | stroke_color; |
39 | | // unlike pos/scale which are animated vectors, rotation is separated in each dimension. |
40 | | SkV3 rotation = { 0, 0, 0 }; |
41 | | Vec2Value blur = { 0, 0 }, |
42 | | line_spacing = { 0, 0 }; |
43 | | ScalarValue opacity = 100, |
44 | | fill_opacity = 100, |
45 | | stroke_opacity = 100, |
46 | | tracking = 0; |
47 | | }; |
48 | | |
49 | | struct ResolvedProps { |
50 | | SkV3 position = { 0, 0, 0 }, |
51 | | scale = { 1, 1, 1 }, |
52 | | rotation = { 0, 0, 0 }; |
53 | | float opacity = 1, |
54 | | tracking = 0; |
55 | | SkColor fill_color = SK_ColorTRANSPARENT, |
56 | | stroke_color = SK_ColorTRANSPARENT; |
57 | | SkV2 blur = { 0, 0 }, |
58 | | line_spacing = { 0, 0 }; |
59 | | }; |
60 | | |
61 | | struct AnimatedPropsModulator { |
62 | | ResolvedProps props; // accumulates properties across *all* animators |
63 | | float coverage; // accumulates range selector coverage for a given animator |
64 | | }; |
65 | | using ModulatorBuffer = std::vector<AnimatedPropsModulator>; |
66 | | |
67 | | // Domain maps describe how a given index domain (words, lines, etc) relates |
68 | | // to the full fragment index range. |
69 | | // |
70 | | // Each domain[i] represents a [domain[i].fOffset.. domain[i].fOffset+domain[i].fCount-1] |
71 | | // fragment subset. |
72 | | struct DomainSpan { |
73 | | size_t fOffset, |
74 | | fCount; |
75 | | float fAdvance, // cumulative advance for all fragments in span |
76 | | fAscent; // max ascent for all fragments in span |
77 | | }; |
78 | | using DomainMap = std::vector<DomainSpan>; |
79 | | |
80 | | struct DomainMaps { |
81 | | DomainMap fNonWhitespaceMap, |
82 | | fWordsMap, |
83 | | fLinesMap; |
84 | | }; |
85 | | |
86 | | void modulateProps(const DomainMaps&, ModulatorBuffer&) const; |
87 | | |
88 | 0 | bool hasBlur() const { return fHasBlur; } |
89 | | |
90 | 0 | bool requiresAnchorPoint() const { return fRequiresAnchorPoint; } |
91 | | |
92 | | private: |
93 | | TextAnimator(std::vector<sk_sp<RangeSelector>>&&, |
94 | | const skjson::ObjectValue&, |
95 | | const AnimationBuilder*, |
96 | | AnimatablePropertyContainer*); |
97 | | |
98 | | ResolvedProps modulateProps(const ResolvedProps&, float amount) const; |
99 | | |
100 | | const std::vector<sk_sp<RangeSelector>> fSelectors; |
101 | | |
102 | | AnimatedProps fTextProps; |
103 | | bool fHasFillColor : 1, |
104 | | fHasStrokeColor : 1, |
105 | | fHasBlur : 1, |
106 | | fRequiresAnchorPoint : 1; // animator sensitive to transform origin? |
107 | | }; |
108 | | |
109 | | } // namespace internal |
110 | | } // namespace skottie |
111 | | |
112 | | #endif // SkottieTextAnimator_DEFINED |