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
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
|
/*
* Copyright 2011 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "SampleCode.h"
#include "SkView.h"
#include "SkCanvas.h"
#include "SkReadBuffer.h"
#include "SkWriteBuffer.h"
#include "SkGradientShader.h"
#include "SkPath.h"
#include "SkRegion.h"
#include "SkShader.h"
#include "SkUtils.h"
#include "SkColorPriv.h"
#include "SkColorFilter.h"
#include "SkStrokeRec.h"
#include "SkTypeface.h"
#include "SkGradientShader.h"
#include "SkBlurMaskFilter.h"
#include "Sk2DPathEffect.h"
class Dot2DPathEffect : public Sk2DPathEffect {
public:
Dot2DPathEffect(SkScalar radius, const SkMatrix& matrix,
SkTDArray<SkPoint>* pts)
: Sk2DPathEffect(matrix), fRadius(radius), fPts(pts) {}
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(Dot2DPathEffect)
class Registrar {
public:
Registrar() {
SkFlattenable::Register("Dot2DPathEffect",
Dot2DPathEffect::CreateProc,
Dot2DPathEffect::GetFlattenableType());
}
};
protected:
void begin(const SkIRect& uvBounds, SkPath* dst) const override {
if (fPts) {
fPts->reset();
}
this->INHERITED::begin(uvBounds, dst);
}
virtual void next(const SkPoint& loc, int u, int v,
SkPath* dst) const override {
if (fPts) {
*fPts->append() = loc;
}
dst->addCircle(loc.fX, loc.fY, fRadius);
}
void flatten(SkWriteBuffer& buffer) const override {
buffer.writeMatrix(this->getMatrix());
buffer.writeScalar(fRadius);
}
private:
SkScalar fRadius;
SkTDArray<SkPoint>* fPts;
typedef Sk2DPathEffect INHERITED;
};
static Dot2DPathEffect::Registrar gReg0;
sk_sp<SkFlattenable> Dot2DPathEffect::CreateProc(SkReadBuffer& buffer) {
SkMatrix matrix;
buffer.readMatrix(&matrix);
return sk_make_sp<Dot2DPathEffect>(buffer.readScalar(), matrix, nullptr);
}
class InverseFillPE : public SkPathEffect {
public:
InverseFillPE() {}
virtual bool filterPath(SkPath* dst, const SkPath& src,
SkStrokeRec*, const SkRect*) const override {
*dst = src;
dst->setFillType(SkPath::kInverseWinding_FillType);
return true;
}
SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(InverseFillPE)
private:
typedef SkPathEffect INHERITED;
};
sk_sp<SkFlattenable> InverseFillPE::CreateProc(SkReadBuffer& buffer) {
return sk_make_sp<InverseFillPE>();
}
static sk_sp<SkPathEffect> makepe(float interp, SkTDArray<SkPoint>* pts) {
SkMatrix lattice;
SkScalar rad = 3 + SkIntToScalar(4) * (1 - interp);
lattice.setScale(rad*2, rad*2, 0, 0);
lattice.postSkew(SK_Scalar1/3, 0, 0, 0);
return sk_make_sp<Dot2DPathEffect>(rad, lattice, pts);
}
class ClockFaceView : public SkView {
sk_sp<SkTypeface> fFace;
SkScalar fInterp;
SkScalar fDx;
public:
ClockFaceView() {
fFace = SkTypeface::MakeFromFile("/Users/reed/Downloads/p052024l.pfb");
fInterp = 0;
fDx = SK_Scalar1/64;
}
protected:
// overrides from SkEventSink
virtual bool onQuery(SkEvent* evt) {
if (SampleCode::TitleQ(*evt)) {
SampleCode::TitleR(evt, "Text Effects");
return true;
}
return this->INHERITED::onQuery(evt);
}
void drawBG(SkCanvas* canvas) {
// canvas->drawColor(0xFFDDDDDD);
canvas->drawColor(SK_ColorWHITE);
}
static void drawdots(SkCanvas* canvas, const SkPaint& orig) {
SkTDArray<SkPoint> pts;
auto pe = makepe(0, &pts);
SkStrokeRec rec(SkStrokeRec::kFill_InitStyle);
SkPath path, dstPath;
orig.getTextPath("9", 1, 0, 0, &path);
pe->filterPath(&dstPath, path, &rec, nullptr);
SkPaint p;
p.setAntiAlias(true);
p.setStrokeWidth(10);
p.setColor(SK_ColorRED);
canvas->drawPoints(SkCanvas::kPoints_PointMode, pts.count(), pts.begin(), p);
}
virtual void onDraw(SkCanvas* canvas) {
this->drawBG(canvas);
SkScalar x = SkIntToScalar(20);
SkScalar y = SkIntToScalar(300);
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextSize(SkIntToScalar(240));
paint.setTypeface(SkTypeface::MakeFromName("sans-serif", SkFontStyle::Bold()));
SkString str("9");
paint.setTypeface(fFace);
canvas->drawString(str, x, y, paint);
// drawdots(canvas, paint);
if (false) {
fInterp += fDx;
if (fInterp > 1) {
fInterp = 1;
fDx = -fDx;
} else if (fInterp < 0) {
fInterp = 0;
fDx = -fDx;
}
}
}
private:
typedef SkView INHERITED;
};
//////////////////////////////////////////////////////////////////////////////
static SkView* MyFactory() { return new ClockFaceView; }
static SkViewRegister reg(MyFactory);
|
