1 /*
2 * Copyright 2012 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 "gm/gm.h"
9 #include "include/core/SkCanvas.h"
10 #include "include/core/SkColor.h"
11 #include "include/core/SkPaint.h"
12 #include "include/core/SkPoint.h"
13 #include "include/core/SkRRect.h"
14 #include "include/core/SkRect.h"
15 #include "include/core/SkScalar.h"
16 #include "include/core/SkSize.h"
17 #include "include/core/SkString.h"
18 #include "include/core/SkTypes.h"
19 #include "tools/ToolUtils.h"
20
21 typedef void (*InsetProc)(const SkRRect&, SkScalar dx, SkScalar dy, SkRRect*);
22
inset0(const SkRRect & src,SkScalar dx,SkScalar dy,SkRRect * dst)23 static void inset0(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) {
24 SkRect r = src.rect();
25
26 r.inset(dx, dy);
27 if (r.isEmpty()) {
28 dst->setEmpty();
29 return;
30 }
31
32 SkVector radii[4];
33 for (int i = 0; i < 4; ++i) {
34 radii[i] = src.radii((SkRRect::Corner)i);
35 }
36 for (int i = 0; i < 4; ++i) {
37 radii[i].fX -= dx;
38 radii[i].fY -= dy;
39 }
40 dst->setRectRadii(r, radii);
41 }
42
inset1(const SkRRect & src,SkScalar dx,SkScalar dy,SkRRect * dst)43 static void inset1(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) {
44 SkRect r = src.rect();
45
46 r.inset(dx, dy);
47 if (r.isEmpty()) {
48 dst->setEmpty();
49 return;
50 }
51
52 SkVector radii[4];
53 for (int i = 0; i < 4; ++i) {
54 radii[i] = src.radii((SkRRect::Corner)i);
55 }
56 dst->setRectRadii(r, radii);
57 }
58
inset2(const SkRRect & src,SkScalar dx,SkScalar dy,SkRRect * dst)59 static void inset2(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) {
60 SkRect r = src.rect();
61
62 r.inset(dx, dy);
63 if (r.isEmpty()) {
64 dst->setEmpty();
65 return;
66 }
67
68 SkVector radii[4];
69 for (int i = 0; i < 4; ++i) {
70 radii[i] = src.radii((SkRRect::Corner)i);
71 }
72 for (int i = 0; i < 4; ++i) {
73 if (radii[i].fX) {
74 radii[i].fX -= dx;
75 }
76 if (radii[i].fY) {
77 radii[i].fY -= dy;
78 }
79 }
80 dst->setRectRadii(r, radii);
81 }
82
prop(SkScalar radius,SkScalar newSize,SkScalar oldSize)83 static SkScalar prop(SkScalar radius, SkScalar newSize, SkScalar oldSize) {
84 return newSize * radius / oldSize;
85 }
86
inset3(const SkRRect & src,SkScalar dx,SkScalar dy,SkRRect * dst)87 static void inset3(const SkRRect& src, SkScalar dx, SkScalar dy, SkRRect* dst) {
88 SkRect r = src.rect();
89
90 r.inset(dx, dy);
91 if (r.isEmpty()) {
92 dst->setEmpty();
93 return;
94 }
95
96 SkVector radii[4];
97 for (int i = 0; i < 4; ++i) {
98 radii[i] = src.radii((SkRRect::Corner)i);
99 }
100 for (int i = 0; i < 4; ++i) {
101 radii[i].fX = prop(radii[i].fX, r.width(), src.rect().width());
102 radii[i].fY = prop(radii[i].fY, r.height(), src.rect().height());
103 }
104 dst->setRectRadii(r, radii);
105 }
106
draw_rrect_color(SkCanvas * canvas,const SkRRect & rrect)107 static void draw_rrect_color(SkCanvas* canvas, const SkRRect& rrect) {
108 SkPaint paint;
109 paint.setAntiAlias(true);
110 paint.setStyle(SkPaint::kStroke_Style);
111
112 if (rrect.isRect()) {
113 paint.setColor(SK_ColorRED);
114 } else if (rrect.isOval()) {
115 paint.setColor(ToolUtils::color_to_565(0xFF008800));
116 } else if (rrect.isSimple()) {
117 paint.setColor(SK_ColorBLUE);
118 } else {
119 paint.setColor(SK_ColorBLACK);
120 }
121 canvas->drawRRect(rrect, paint);
122 }
123
drawrr(SkCanvas * canvas,const SkRRect & rrect,InsetProc proc)124 static void drawrr(SkCanvas* canvas, const SkRRect& rrect, InsetProc proc) {
125 SkRRect rr;
126 for (SkScalar d = -30; d <= 30; d += 5) {
127 proc(rrect, d, d, &rr);
128 draw_rrect_color(canvas, rr);
129 }
130 }
131
132 class RRectGM : public skiagm::GM {
133 public:
RRectGM()134 RRectGM() {}
135
136 protected:
137
onShortName()138 SkString onShortName() override {
139 return SkString("rrect");
140 }
141
onISize()142 SkISize onISize() override {
143 return SkISize::Make(820, 710);
144 }
145
onDraw(SkCanvas * canvas)146 void onDraw(SkCanvas* canvas) override {
147 constexpr InsetProc insetProcs[] = {
148 inset0, inset1, inset2, inset3
149 };
150
151 SkRRect rrect[4];
152 SkRect r = { 0, 0, 120, 100 };
153 SkVector radii[4] = {
154 { 0, 0 }, { 30, 1 }, { 10, 40 }, { 40, 40 }
155 };
156
157 rrect[0].setRect(r);
158 rrect[1].setOval(r);
159 rrect[2].setRectXY(r, 20, 20);
160 rrect[3].setRectRadii(r, radii);
161
162 canvas->translate(50.5f, 50.5f);
163 for (size_t j = 0; j < SK_ARRAY_COUNT(insetProcs); ++j) {
164 canvas->save();
165 for (size_t i = 0; i < SK_ARRAY_COUNT(rrect); ++i) {
166 drawrr(canvas, rrect[i], insetProcs[j]);
167 canvas->translate(200, 0);
168 }
169 canvas->restore();
170 canvas->translate(0, 170);
171 }
172 }
173
174 private:
175 typedef GM INHERITED;
176 };
177
178 DEF_GM( return new RRectGM; )
179