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/SkBitmap.h"
10 #include "include/core/SkCanvas.h"
11 #include "include/core/SkClipOp.h"
12 #include "include/core/SkColor.h"
13 #include "include/core/SkFont.h"
14 #include "include/core/SkPaint.h"
15 #include "include/core/SkPath.h"
16 #include "include/core/SkRect.h"
17 #include "include/core/SkRegion.h"
18 #include "include/core/SkScalar.h"
19 #include "include/core/SkSize.h"
20 #include "include/core/SkString.h"
21 #include "include/core/SkTypeface.h"
22 #include "include/core/SkTypes.h"
23 #include "src/core/SkAAClip.h"
24 #include "src/core/SkMask.h"
25 #include "tools/ToolUtils.h"
26
27 namespace skiagm {
28
paint_rgn(SkCanvas * canvas,const SkAAClip & clip,const SkPaint & paint)29 static void paint_rgn(SkCanvas* canvas, const SkAAClip& clip,
30 const SkPaint& paint) {
31 SkMask mask;
32 SkBitmap bm;
33
34 clip.copyToMask(&mask);
35
36 SkAutoMaskFreeImage amfi(mask.fImage);
37
38 bm.installMaskPixels(mask);
39
40 // need to copy for deferred drawing test to work
41 SkBitmap bm2;
42
43 ToolUtils::copy_to(&bm2, bm.colorType(), bm);
44
45 canvas->drawImage(bm2.asImage(),
46 SK_Scalar1 * mask.fBounds.fLeft,
47 SK_Scalar1 * mask.fBounds.fTop,
48 SkSamplingOptions(),
49 &paint);
50 }
51
52 //////////////////////////////////////////////////////////////////////////////
53 /*
54 * This GM tests anti aliased single operation booleans with SkAAClips,
55 * SkRect and SkPaths.
56 */
57 class SimpleClipGM : public GM {
58 public:
59 enum SkGeomTypes {
60 kRect_GeomType,
61 kPath_GeomType,
62 kAAClip_GeomType
63 };
64
SimpleClipGM(SkGeomTypes geomType)65 SimpleClipGM(SkGeomTypes geomType)
66 : fGeomType(geomType) {
67 }
68
69 protected:
onOnceBeforeDraw()70 void onOnceBeforeDraw() override {
71 // offset the rects a bit so we get anti-aliasing in the rect case
72 fBase.setLTRB(100.65f,
73 100.65f,
74 150.65f,
75 150.65f);
76 fRect = fBase;
77 fRect.inset(5, 5);
78 fRect.offset(25, 25);
79
80 fBasePath.addRoundRect(fBase, SkIntToScalar(5), SkIntToScalar(5));
81 fRectPath.addRoundRect(fRect, SkIntToScalar(5), SkIntToScalar(5));
82 INHERITED::setBGColor(0xFFDDDDDD);
83 }
84
buildRgn(SkAAClip * clip,SkClipOp op)85 void buildRgn(SkAAClip* clip, SkClipOp op) {
86 clip->setPath(fBasePath, fBasePath.getBounds().roundOut(), true);
87
88 SkAAClip clip2;
89 clip2.setPath(fRectPath, fRectPath.getBounds().roundOut(), true);
90 clip->op(clip2, op);
91 }
92
drawOrig(SkCanvas * canvas)93 void drawOrig(SkCanvas* canvas) {
94 SkPaint paint;
95
96 paint.setStyle(SkPaint::kStroke_Style);
97 paint.setColor(SK_ColorBLACK);
98
99 canvas->drawRect(fBase, paint);
100 canvas->drawRect(fRect, paint);
101 }
102
drawRgnOped(SkCanvas * canvas,SkClipOp op,SkColor color)103 void drawRgnOped(SkCanvas* canvas, SkClipOp op, SkColor color) {
104
105 SkAAClip clip;
106
107 this->buildRgn(&clip, op);
108 this->drawOrig(canvas);
109
110 SkPaint paint;
111 paint.setColor(color);
112 paint_rgn(canvas, clip, paint);
113 }
114
drawPathsOped(SkCanvas * canvas,SkClipOp op,SkColor color)115 void drawPathsOped(SkCanvas* canvas, SkClipOp op, SkColor color) {
116
117 this->drawOrig(canvas);
118
119 canvas->save();
120
121 // create the clip mask with the supplied boolean op
122 if (kPath_GeomType == fGeomType) {
123 // path-based case
124 canvas->clipPath(fBasePath, true);
125 canvas->clipPath(fRectPath, op, true);
126 } else {
127 // rect-based case
128 canvas->clipRect(fBase, true);
129 canvas->clipRect(fRect, op, true);
130 }
131
132 // draw a rect that will entirely cover the clip mask area
133 SkPaint paint;
134 paint.setColor(color);
135
136 SkRect r = SkRect::MakeLTRB(SkIntToScalar(90), SkIntToScalar(90),
137 SkIntToScalar(180), SkIntToScalar(180));
138
139 canvas->drawRect(r, paint);
140
141 canvas->restore();
142 }
143
onShortName()144 SkString onShortName() override {
145 SkString str;
146 str.printf("simpleaaclip_%s",
147 kRect_GeomType == fGeomType ? "rect" :
148 (kPath_GeomType == fGeomType ? "path" :
149 "aaclip"));
150 return str;
151 }
152
onISize()153 SkISize onISize() override {
154 return SkISize::Make(500, 240);
155 }
156
onDraw(SkCanvas * canvas)157 void onDraw(SkCanvas* canvas) override {
158
159 const struct {
160 SkColor fColor;
161 const char* fName;
162 SkClipOp fOp;
163 } gOps[] = {
164 {SK_ColorBLACK, "Difference", SkClipOp::kDifference},
165 {SK_ColorRED, "Intersect", SkClipOp::kIntersect},
166 };
167
168 SkPaint textPaint;
169 SkFont font(ToolUtils::create_portable_typeface(), 24);
170 int xOff = 0;
171
172 for (size_t op = 0; op < SK_ARRAY_COUNT(gOps); op++) {
173 canvas->drawString(gOps[op].fName, 75.0f, 50.0f, font, textPaint);
174
175 if (kAAClip_GeomType == fGeomType) {
176 this->drawRgnOped(canvas, gOps[op].fOp, gOps[op].fColor);
177 } else {
178 this->drawPathsOped(canvas, gOps[op].fOp, gOps[op].fColor);
179 }
180
181 if (xOff >= 400) {
182 canvas->translate(SkIntToScalar(-400), SkIntToScalar(250));
183 xOff = 0;
184 } else {
185 canvas->translate(SkIntToScalar(200), 0);
186 xOff += 200;
187 }
188 }
189 }
190 private:
191
192 SkGeomTypes fGeomType;
193
194 SkRect fBase;
195 SkRect fRect;
196
197 SkPath fBasePath; // fBase as a round rect
198 SkPath fRectPath; // fRect as a round rect
199
200 using INHERITED = GM;
201 };
202
203 //////////////////////////////////////////////////////////////////////////////
204
205 // rects
206 DEF_GM( return new SimpleClipGM(SimpleClipGM::kRect_GeomType); )
207 DEF_GM( return new SimpleClipGM(SimpleClipGM::kPath_GeomType); )
208 DEF_GM( return new SimpleClipGM(SimpleClipGM::kAAClip_GeomType); )
209
210 } // namespace skiagm
211