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
|
/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "SkCanvas.h"
#include "SkRRect.h"
#include "SkPath.h"
typedef void (*InsetProc)(const SkRRect&, SkScalar dx, SkScalar dy, SkRRect*);
static void inset0(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) {
SkRect r = src.rect();
r.inset(dx, dy);
if (r.isEmpty()) {
dst->setEmpty();
return;
}
SkVector radii[4];
for (int i = 0; i < 4; ++i) {
radii[i] = src.radii((SkRRect::Corner)i);
}
for (int i = 0; i < 4; ++i) {
radii[i].fX -= dx;
radii[i].fY -= dy;
}
dst->setRectRadii(r, radii);
}
static void inset1(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) {
SkRect r = src.rect();
r.inset(dx, dy);
if (r.isEmpty()) {
dst->setEmpty();
return;
}
SkVector radii[4];
for (int i = 0; i < 4; ++i) {
radii[i] = src.radii((SkRRect::Corner)i);
}
dst->setRectRadii(r, radii);
}
static void inset2(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) {
SkRect r = src.rect();
r.inset(dx, dy);
if (r.isEmpty()) {
dst->setEmpty();
return;
}
SkVector radii[4];
for (int i = 0; i < 4; ++i) {
radii[i] = src.radii((SkRRect::Corner)i);
}
for (int i = 0; i < 4; ++i) {
if (radii[i].fX) {
radii[i].fX -= dx;
}
if (radii[i].fY) {
radii[i].fY -= dy;
}
}
dst->setRectRadii(r, radii);
}
static SkScalar prop(SkScalar radius, SkScalar newSize, SkScalar oldSize) {
return newSize * radius / oldSize;
}
static void inset3(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) {
SkRect r = src.rect();
r.inset(dx, dy);
if (r.isEmpty()) {
dst->setEmpty();
return;
}
SkVector radii[4];
for (int i = 0; i < 4; ++i) {
radii[i] = src.radii((SkRRect::Corner)i);
}
for (int i = 0; i < 4; ++i) {
radii[i].fX = prop(radii[i].fX, r.width(), src.rect().width());
radii[i].fY = prop(radii[i].fY, r.height(), src.rect().height());
}
dst->setRectRadii(r, radii);
}
static void draw_rrect_color(SkCanvas* canvas, const SkRRect& rrect) {
SkPaint paint;
paint.setAntiAlias(true);
paint.setStyle(SkPaint::kStroke_Style);
if (rrect.isRect()) {
paint.setColor(SK_ColorRED);
} else if (rrect.isOval()) {
paint.setColor(0xFF008800);
} else if (rrect.isSimple()) {
paint.setColor(SK_ColorBLUE);
} else {
paint.setColor(SK_ColorBLACK);
}
canvas->drawRRect(rrect, paint);
}
static void drawrr(SkCanvas* canvas, const SkRRect& rrect, InsetProc proc) {
SkRRect rr;
for (SkScalar d = -30; d <= 30; d += 5) {
proc(rrect, d, d, &rr);
draw_rrect_color(canvas, rr);
}
}
class RRectGM : public skiagm::GM {
public:
RRectGM() {}
protected:
SkString onShortName() override {
return SkString("rrect");
}
SkISize onISize() override {
return SkISize::Make(820, 710);
}
void onDraw(SkCanvas* canvas) override {
static const InsetProc insetProcs[] = {
inset0, inset1, inset2, inset3
};
SkRRect rrect[4];
SkRect r = { 0, 0, 120, 100 };
SkVector radii[4] = {
{ 0, 0 }, { 30, 1 }, { 10, 40 }, { 40, 40 }
};
rrect[0].setRect(r);
rrect[1].setOval(r);
rrect[2].setRectXY(r, 20, 20);
rrect[3].setRectRadii(r, radii);
canvas->translate(50.5f, 50.5f);
for (size_t j = 0; j < SK_ARRAY_COUNT(insetProcs); ++j) {
canvas->save();
for (size_t i = 0; i < SK_ARRAY_COUNT(rrect); ++i) {
drawrr(canvas, rrect[i], insetProcs[j]);
canvas->translate(200, 0);
}
canvas->restore();
canvas->translate(0, 170);
}
}
private:
typedef GM INHERITED;
};
DEF_GM( return new RRectGM; )
|
