blob: 86386b3d493696ec21b1b38aea752ce78b7a49c4 [file] [log] [blame]
epoger@google.comec3ed6a2011-07-28 14:26:00 +00001
2/*
3 * Copyright 2011 Google Inc.
4 *
5 * Use of this source code is governed by a BSD-style license that can be
6 * found in the LICENSE file.
7 */
bsalomon@google.com807cec42011-03-10 19:20:15 +00008#include "gm.h"
9#include "SkCanvas.h"
10//#include "SkParsePath.h"
11#include "SkPath.h"
12//#include "SkRandom.h"
13
14namespace skiagm {
15
reed@google.coma8f60f22011-12-08 16:18:29 +000016static const SkColor gPathColor = SK_ColorBLACK;
17static const SkColor gClipAColor = SK_ColorBLUE;
18static const SkColor gClipBColor = SK_ColorRED;
19
bsalomon@google.com807cec42011-03-10 19:20:15 +000020class ComplexClipGM : public GM {
reed@google.coma8f60f22011-12-08 16:18:29 +000021 bool fDoAAClip;
robertphillips@google.com54bb7ab2012-07-13 14:55:25 +000022 bool fDoSaveLayer;
bsalomon@google.com807cec42011-03-10 19:20:15 +000023public:
rmistry@google.comd6176b02012-08-23 18:14:13 +000024 ComplexClipGM(bool aaclip, bool saveLayer)
robertphillips@google.com50a69a02012-07-12 13:48:46 +000025 : fDoAAClip(aaclip)
robertphillips@google.com54bb7ab2012-07-13 14:55:25 +000026 , fDoSaveLayer(saveLayer) {
reed@google.coma8f60f22011-12-08 16:18:29 +000027 this->setBGColor(0xFFDDDDDD);
28// this->setBGColor(SkColorSetRGB(0xB0,0xDD,0xB0));
bsalomon@google.com807cec42011-03-10 19:20:15 +000029 }
30
31protected:
32
33 SkString onShortName() {
reed@google.coma8f60f22011-12-08 16:18:29 +000034 SkString str;
rmistry@google.comd6176b02012-08-23 18:14:13 +000035 str.printf("complexclip_%s%s",
robertphillips@google.com50a69a02012-07-12 13:48:46 +000036 fDoAAClip ? "aa" : "bw",
robertphillips@google.com54bb7ab2012-07-13 14:55:25 +000037 fDoSaveLayer ? "_layer" : "");
reed@google.coma8f60f22011-12-08 16:18:29 +000038 return str;
bsalomon@google.com807cec42011-03-10 19:20:15 +000039 }
40
reed@google.coma8f60f22011-12-08 16:18:29 +000041 SkISize onISize() { return make_isize(970, 780); }
bsalomon@google.com807cec42011-03-10 19:20:15 +000042
bsalomon@google.com807cec42011-03-10 19:20:15 +000043 virtual void onDraw(SkCanvas* canvas) {
44 SkPath path;
45 path.moveTo(SkIntToScalar(0), SkIntToScalar(50));
46 path.quadTo(SkIntToScalar(0), SkIntToScalar(0), SkIntToScalar(50), SkIntToScalar(0));
47 path.lineTo(SkIntToScalar(175), SkIntToScalar(0));
48 path.quadTo(SkIntToScalar(200), SkIntToScalar(0), SkIntToScalar(200), SkIntToScalar(25));
49 path.lineTo(SkIntToScalar(200), SkIntToScalar(150));
50 path.quadTo(SkIntToScalar(200), SkIntToScalar(200), SkIntToScalar(150), SkIntToScalar(200));
51 path.lineTo(SkIntToScalar(0), SkIntToScalar(200));
52 path.close();
53 path.moveTo(SkIntToScalar(50), SkIntToScalar(50));
54 path.lineTo(SkIntToScalar(150), SkIntToScalar(50));
55 path.lineTo(SkIntToScalar(150), SkIntToScalar(125));
56 path.quadTo(SkIntToScalar(150), SkIntToScalar(150), SkIntToScalar(125), SkIntToScalar(150));
57 path.lineTo(SkIntToScalar(50), SkIntToScalar(150));
58 path.close();
59 path.setFillType(SkPath::kEvenOdd_FillType);
bsalomon@google.com807cec42011-03-10 19:20:15 +000060 SkPaint pathPaint;
61 pathPaint.setAntiAlias(true);
reed@google.coma8f60f22011-12-08 16:18:29 +000062 pathPaint.setColor(gPathColor);
bsalomon@google.com807cec42011-03-10 19:20:15 +000063
64 SkPath clipA;
65 clipA.moveTo(SkIntToScalar(10), SkIntToScalar(20));
66 clipA.lineTo(SkIntToScalar(165), SkIntToScalar(22));
67 clipA.lineTo(SkIntToScalar(70), SkIntToScalar(105));
68 clipA.lineTo(SkIntToScalar(165), SkIntToScalar(177));
69 clipA.lineTo(SkIntToScalar(-5), SkIntToScalar(180));
70 clipA.close();
bsalomon@google.com807cec42011-03-10 19:20:15 +000071
72 SkPath clipB;
73 clipB.moveTo(SkIntToScalar(40), SkIntToScalar(10));
74 clipB.lineTo(SkIntToScalar(190), SkIntToScalar(15));
75 clipB.lineTo(SkIntToScalar(195), SkIntToScalar(190));
76 clipB.lineTo(SkIntToScalar(40), SkIntToScalar(185));
77 clipB.lineTo(SkIntToScalar(155), SkIntToScalar(100));
78 clipB.close();
bsalomon@google.com807cec42011-03-10 19:20:15 +000079
bsalomon@google.com807cec42011-03-10 19:20:15 +000080 SkPaint paint;
81 paint.setAntiAlias(true);
reed@google.coma8f60f22011-12-08 16:18:29 +000082 paint.setTextSize(SkIntToScalar(20));
bsalomon@google.com807cec42011-03-10 19:20:15 +000083
84 static const struct {
85 SkRegion::Op fOp;
86 const char* fName;
87 } gOps[] = { //extra spaces in names for measureText
88 {SkRegion::kIntersect_Op, "Isect "},
89 {SkRegion::kDifference_Op, "Diff " },
90 {SkRegion::kUnion_Op, "Union "},
91 {SkRegion::kXOR_Op, "Xor " },
92 {SkRegion::kReverseDifference_Op, "RDiff "}
93 };
94
reed@google.coma8f60f22011-12-08 16:18:29 +000095 canvas->translate(SkIntToScalar(20), SkIntToScalar(20));
bsalomon@google.com807cec42011-03-10 19:20:15 +000096 canvas->scale(3 * SK_Scalar1 / 4, 3 * SK_Scalar1 / 4);
bsalomon@google.com807cec42011-03-10 19:20:15 +000097
robertphillips@google.com54bb7ab2012-07-13 14:55:25 +000098 if (fDoSaveLayer) {
99 // We want the layer to appear symmetric relative to actual
100 // device boundaries so we need to "undo" the effect of the
101 // scale and translate
102 SkRect bounds = SkRect::MakeLTRB(
robertphillips@google.com7fb26012012-07-13 15:17:53 +0000103 SkFloatToScalar(4.0f/3.0f * -20),
104 SkFloatToScalar(4.0f/3.0f * -20),
robertphillips@google.com54bb7ab2012-07-13 14:55:25 +0000105 SkFloatToScalar(4.0f/3.0f * (this->getISize().fWidth - 20)),
106 SkFloatToScalar(4.0f/3.0f * (this->getISize().fHeight - 20)));
107
108 bounds.inset(SkIntToScalar(100), SkIntToScalar(100));
robertphillips@google.com50a69a02012-07-12 13:48:46 +0000109 SkPaint boundPaint;
110 boundPaint.setColor(SK_ColorRED);
111 boundPaint.setStyle(SkPaint::kStroke_Style);
112 canvas->drawRect(bounds, boundPaint);
113 canvas->saveLayer(&bounds, NULL);
114 }
115
reed@google.coma8f60f22011-12-08 16:18:29 +0000116 for (int invBits = 0; invBits < 4; ++invBits) {
117 canvas->save();
bsalomon@google.com807cec42011-03-10 19:20:15 +0000118 for (size_t op = 0; op < SK_ARRAY_COUNT(gOps); ++op) {
reed@google.coma8f60f22011-12-08 16:18:29 +0000119 this->drawHairlines(canvas, path, clipA, clipB);
120
121 bool doInvA = SkToBool(invBits & 1);
122 bool doInvB = SkToBool(invBits & 2);
bsalomon@google.com807cec42011-03-10 19:20:15 +0000123 canvas->save();
124 // set clip
reed@google.coma8f60f22011-12-08 16:18:29 +0000125 clipA.setFillType(doInvA ? SkPath::kInverseEvenOdd_FillType :
126 SkPath::kEvenOdd_FillType);
127 clipB.setFillType(doInvB ? SkPath::kInverseEvenOdd_FillType :
128 SkPath::kEvenOdd_FillType);
129 canvas->clipPath(clipA, SkRegion::kIntersect_Op, fDoAAClip);
130 canvas->clipPath(clipB, gOps[op].fOp, fDoAAClip);
bsalomon@google.com807cec42011-03-10 19:20:15 +0000131
132 // draw path clipped
133 canvas->drawPath(path, pathPaint);
134 canvas->restore();
135
bsalomon@google.com807cec42011-03-10 19:20:15 +0000136
reed@google.coma8f60f22011-12-08 16:18:29 +0000137 SkScalar txtX = SkIntToScalar(45);
138 paint.setColor(gClipAColor);
139 const char* aTxt = doInvA ? "InvA " : "A ";
bsalomon@google.com807cec42011-03-10 19:20:15 +0000140 canvas->drawText(aTxt, strlen(aTxt), txtX, SkIntToScalar(220), paint);
141 txtX += paint.measureText(aTxt, strlen(aTxt));
142 paint.setColor(SK_ColorBLACK);
143 canvas->drawText(gOps[op].fName, strlen(gOps[op].fName),
144 txtX, SkIntToScalar(220), paint);
145 txtX += paint.measureText(gOps[op].fName, strlen(gOps[op].fName));
reed@google.coma8f60f22011-12-08 16:18:29 +0000146 paint.setColor(gClipBColor);
147 const char* bTxt = doInvB ? "InvB " : "B ";
148 canvas->drawText(bTxt, strlen(bTxt), txtX, SkIntToScalar(220), paint);
bsalomon@google.com807cec42011-03-10 19:20:15 +0000149
150 canvas->translate(SkIntToScalar(250),0);
151 }
reed@google.coma8f60f22011-12-08 16:18:29 +0000152 canvas->restore();
153 canvas->translate(0, SkIntToScalar(250));
bsalomon@google.com807cec42011-03-10 19:20:15 +0000154 }
robertphillips@google.com50a69a02012-07-12 13:48:46 +0000155
robertphillips@google.com54bb7ab2012-07-13 14:55:25 +0000156 if (fDoSaveLayer) {
robertphillips@google.com50a69a02012-07-12 13:48:46 +0000157 canvas->restore();
158 }
bsalomon@google.com807cec42011-03-10 19:20:15 +0000159 }
160private:
reed@google.coma8f60f22011-12-08 16:18:29 +0000161 void drawHairlines(SkCanvas* canvas, const SkPath& path,
162 const SkPath& clipA, const SkPath& clipB) {
163 SkPaint paint;
164 paint.setAntiAlias(true);
165 paint.setStyle(SkPaint::kStroke_Style);
166 const SkAlpha fade = 0x33;
167
168 // draw path in hairline
169 paint.setColor(gPathColor); paint.setAlpha(fade);
170 canvas->drawPath(path, paint);
rmistry@google.comd6176b02012-08-23 18:14:13 +0000171
reed@google.coma8f60f22011-12-08 16:18:29 +0000172 // draw clips in hair line
173 paint.setColor(gClipAColor); paint.setAlpha(fade);
174 canvas->drawPath(clipA, paint);
175 paint.setColor(gClipBColor); paint.setAlpha(fade);
176 canvas->drawPath(clipB, paint);
177 }
178
bsalomon@google.com807cec42011-03-10 19:20:15 +0000179 typedef GM INHERITED;
180};
181
182//////////////////////////////////////////////////////////////////////////////
183
robertphillips@google.com50a69a02012-07-12 13:48:46 +0000184// aliased and anti-aliased w/o a layer
185static GM* gFact0(void*) { return new ComplexClipGM(false, false); }
186static GM* gFact1(void*) { return new ComplexClipGM(true, false); }
187
188// aliased and anti-aliased w/ a layer
189static GM* gFact2(void*) { return new ComplexClipGM(false, true); }
190static GM* gFact3(void*) { return new ComplexClipGM(true, true); }
reed@google.coma8f60f22011-12-08 16:18:29 +0000191
192static GMRegistry gReg0(gFact0);
193static GMRegistry gReg1(gFact1);
robertphillips@google.com50a69a02012-07-12 13:48:46 +0000194static GMRegistry gReg2(gFact2);
195static GMRegistry gReg3(gFact3);
bsalomon@google.com807cec42011-03-10 19:20:15 +0000196
197}