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/SkPath.h"
13 #include "include/core/SkRect.h"
14 #include "include/core/SkScalar.h"
15 #include "include/core/SkSize.h"
16 #include "include/core/SkString.h"
17 #include "tools/ToolUtils.h"
18
inset(const SkRect & r)19 static SkRect inset(const SkRect& r) {
20 SkRect rect = r;
21 rect.inset(r.width() / 8, r.height() / 8);
22 return rect;
23 }
24
25 class PathInteriorGM : public skiagm::GM {
26 public:
PathInteriorGM()27 PathInteriorGM() {
28 this->setBGColor(0xFFDDDDDD);
29 }
30
31 protected:
getISize()32 SkISize getISize() override { return SkISize::Make(770, 770); }
33
getName() const34 SkString getName() const override { return SkString("pathinterior"); }
35
show(SkCanvas * canvas,const SkPath & path)36 void show(SkCanvas* canvas, const SkPath& path) {
37 SkPaint paint;
38 paint.setAntiAlias(true);
39
40 SkRect rect;
41 #if 0
42 bool hasInterior = path.hasRectangularInterior(&rect);
43 #else
44 bool hasInterior = false;
45 #endif
46
47 paint.setColor(hasInterior ? ToolUtils::color_to_565(0xFF8888FF) : SK_ColorGRAY);
48 canvas->drawPath(path, paint);
49 paint.setStyle(SkPaint::kStroke_Style);
50 paint.setColor(SK_ColorRED);
51 canvas->drawPath(path, paint);
52
53 if (hasInterior) {
54 paint.setStyle(SkPaint::kFill_Style);
55 paint.setColor(0x8800FF00);
56 canvas->drawRect(rect, paint);
57 }
58 }
59
onDraw(SkCanvas * canvas)60 void onDraw(SkCanvas* canvas) override {
61 canvas->translate(8.5f, 8.5f);
62
63 const SkRect rect = { 0, 0, 80, 80 };
64 const SkScalar RAD = rect.width()/8;
65
66 int i = 0;
67 for (int insetFirst = 0; insetFirst <= 1; ++insetFirst) {
68 for (int doEvenOdd = 0; doEvenOdd <= 1; ++doEvenOdd) {
69 for (int outerRR = 0; outerRR <= 1; ++outerRR) {
70 for (int innerRR = 0; innerRR <= 1; ++innerRR) {
71 for (int outerCW = 0; outerCW <= 1; ++outerCW) {
72 for (int innerCW = 0; innerCW <= 1; ++innerCW) {
73 SkPath path;
74 path.setFillType(doEvenOdd ? SkPathFillType::kEvenOdd : SkPathFillType::kWinding);
75 SkPathDirection outerDir = outerCW ? SkPathDirection::kCW : SkPathDirection::kCCW;
76 SkPathDirection innerDir = innerCW ? SkPathDirection::kCW : SkPathDirection::kCCW;
77
78 SkRect r = insetFirst ? inset(rect) : rect;
79 if (outerRR) {
80 path.addRoundRect(r, RAD, RAD, outerDir);
81 } else {
82 path.addRect(r, outerDir);
83 }
84 r = insetFirst ? rect : inset(rect);
85 if (innerRR) {
86 path.addRoundRect(r, RAD, RAD, innerDir);
87 } else {
88 path.addRect(r, innerDir);
89 }
90
91 SkScalar dx = (i / 8) * rect.width() * 6 / 5;
92 SkScalar dy = (i % 8) * rect.height() * 6 / 5;
93 i++;
94 path.offset(dx, dy);
95
96 this->show(canvas, path);
97 }
98 }
99 }
100 }
101 }
102 }
103 }
104
105 private:
106
107 using INHERITED = GM;
108 };
109
110 //////////////////////////////////////////////////////////////////////////////
111
112 DEF_GM( return new PathInteriorGM; )
113