1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
|
/*
* Copyright 2018 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkSGText_DEFINED
#define SkSGText_DEFINED
#include "SkSGGeometryNode.h"
#include "SkPaintDefaults.h"
#include "SkPoint.h"
#include "SkString.h"
#include "SkTextBlob.h"
#include "SkTextUtils.h"
class SkCanvas;
class SkPaint;
class SkTypeface;
namespace sksg {
/**
* Concrete Geometry node, wrapping a (shaped) SkTextBlob.
*/
class Text final : public GeometryNode {
public:
static sk_sp<Text> Make(sk_sp<SkTypeface> tf, const SkString& text);
~Text() override;
SG_ATTRIBUTE(Typeface, sk_sp<SkTypeface>, fTypeface)
SG_ATTRIBUTE(Text , SkString , fText )
SG_ATTRIBUTE(Flags , uint32_t , fFlags )
SG_ATTRIBUTE(Position, SkPoint , fPosition)
SG_ATTRIBUTE(Size , SkScalar , fSize )
SG_ATTRIBUTE(ScaleX , SkScalar , fScaleX )
SG_ATTRIBUTE(SkewX , SkScalar , fSkewX )
SG_ATTRIBUTE(Align , SkTextUtils::Align , fAlign )
SG_ATTRIBUTE(Hinting , SkPaint::Hinting , fHinting )
// TODO: add shaping functionality.
protected:
void onClip(SkCanvas*, bool antiAlias) const override;
void onDraw(SkCanvas*, const SkPaint&) const override;
SkRect onRevalidate(InvalidationController*, const SkMatrix&) override;
SkPath onAsPath() const override;
private:
Text(sk_sp<SkTypeface>, const SkString&);
SkPoint alignedPosition(SkScalar advance) const;
sk_sp<SkTypeface> fTypeface;
SkString fText;
uint32_t fFlags = SkPaintDefaults_Flags;
SkPoint fPosition = SkPoint::Make(0, 0);
SkScalar fSize = SkPaintDefaults_TextSize;
SkScalar fScaleX = 1;
SkScalar fSkewX = 0;
SkTextUtils::Align fAlign = SkTextUtils::kLeft_Align;
SkPaint::Hinting fHinting = SkPaintDefaults_Hinting;
sk_sp<SkTextBlob> fBlob; // cached text blob
using INHERITED = GeometryNode;
};
/**
* Concrete Geometry node, wrapping an external SkTextBlob.
*/
class TextBlob final : public GeometryNode {
public:
static sk_sp<TextBlob> Make(sk_sp<SkTextBlob> = nullptr);
~TextBlob() override;
SG_ATTRIBUTE(Blob , sk_sp<SkTextBlob>, fBlob )
SG_ATTRIBUTE(Position, SkPoint , fPosition)
protected:
void onClip(SkCanvas*, bool antiAlias) const override;
void onDraw(SkCanvas*, const SkPaint&) const override;
SkRect onRevalidate(InvalidationController*, const SkMatrix&) override;
SkPath onAsPath() const override;
private:
explicit TextBlob(sk_sp<SkTextBlob>);
sk_sp<SkTextBlob> fBlob;
SkPoint fPosition = SkPoint::Make(0, 0);
using INHERITED = GeometryNode;
};
} // namespace sksg
#endif // SkSGText_DEFINED
|
