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 #include "tools/fonts/FontToolUtils.h"
27
28 namespace skiagm {
29
paint_rgn(SkCanvas * canvas,const SkAAClip & clip,const SkPaint & paint)30 static void paint_rgn(SkCanvas* canvas, const SkAAClip& clip,
31 const SkPaint& paint) {
32 SkMaskBuilder mask;
33 SkBitmap bm;
34
35 clip.copyToMask(&mask);
36
37 SkAutoMaskFreeImage amfi(mask.image());
38
39 bm.installMaskPixels(mask);
40
41 // need to copy for deferred drawing test to work
42 SkBitmap bm2;
43
44 ToolUtils::copy_to(&bm2, bm.colorType(), bm);
45
46 canvas->drawImage(bm2.asImage(),
47 SK_Scalar1 * mask.fBounds.fLeft,
48 SK_Scalar1 * mask.fBounds.fTop,
49 SkSamplingOptions(),
50 &paint);
51 }
52
53 //////////////////////////////////////////////////////////////////////////////
54 /*
55 * This GM tests anti aliased single operation booleans with SkAAClips,
56 * SkRect and SkPaths.
57 */
58 class SimpleClipGM : public GM {
59 public:
60 enum SkGeomTypes {
61 kRect_GeomType,
62 kPath_GeomType,
63 kAAClip_GeomType
64 };
65
SimpleClipGM(SkGeomTypes geomType)66 SimpleClipGM(SkGeomTypes geomType)
67 : fGeomType(geomType) {
68 }
69
70 protected:
onOnceBeforeDraw()71 void onOnceBeforeDraw() override {
72 // offset the rects a bit so we get anti-aliasing in the rect case
73 fBase.setLTRB(100.65f,
74 100.65f,
75 150.65f,
76 150.65f);
77 fRect = fBase;
78 fRect.inset(5, 5);
79 fRect.offset(25, 25);
80
81 fBasePath.addRoundRect(fBase, SkIntToScalar(5), SkIntToScalar(5));
82 fRectPath.addRoundRect(fRect, SkIntToScalar(5), SkIntToScalar(5));
83 INHERITED::setBGColor(0xFFDDDDDD);
84 }
85
buildRgn(SkAAClip * clip,SkClipOp op)86 void buildRgn(SkAAClip* clip, SkClipOp op) {
87 clip->setPath(fBasePath, fBasePath.getBounds().roundOut(), true);
88
89 SkAAClip clip2;
90 clip2.setPath(fRectPath, fRectPath.getBounds().roundOut(), true);
91 clip->op(clip2, op);
92 }
93
drawOrig(SkCanvas * canvas)94 void drawOrig(SkCanvas* canvas) {
95 SkPaint paint;
96
97 paint.setStyle(SkPaint::kStroke_Style);
98 paint.setColor(SK_ColorBLACK);
99
100 canvas->drawRect(fBase, paint);
101 canvas->drawRect(fRect, paint);
102 }
103
drawRgnOped(SkCanvas * canvas,SkClipOp op,SkColor color)104 void drawRgnOped(SkCanvas* canvas, SkClipOp op, SkColor color) {
105
106 SkAAClip clip;
107
108 this->buildRgn(&clip, op);
109 this->drawOrig(canvas);
110
111 SkPaint paint;
112 paint.setColor(color);
113 paint_rgn(canvas, clip, paint);
114 }
115
drawPathsOped(SkCanvas * canvas,SkClipOp op,SkColor color)116 void drawPathsOped(SkCanvas* canvas, SkClipOp op, SkColor color) {
117
118 this->drawOrig(canvas);
119
120 canvas->save();
121
122 // create the clip mask with the supplied boolean op
123 if (kPath_GeomType == fGeomType) {
124 // path-based case
125 canvas->clipPath(fBasePath, true);
126 canvas->clipPath(fRectPath, op, true);
127 } else {
128 // rect-based case
129 canvas->clipRect(fBase, true);
130 canvas->clipRect(fRect, op, true);
131 }
132
133 // draw a rect that will entirely cover the clip mask area
134 SkPaint paint;
135 paint.setColor(color);
136
137 SkRect r = SkRect::MakeLTRB(SkIntToScalar(90), SkIntToScalar(90),
138 SkIntToScalar(180), SkIntToScalar(180));
139
140 canvas->drawRect(r, paint);
141
142 canvas->restore();
143 }
144
getName() const145 SkString getName() const override {
146 SkString str;
147 str.printf("simpleaaclip_%s",
148 kRect_GeomType == fGeomType ? "rect" :
149 (kPath_GeomType == fGeomType ? "path" :
150 "aaclip"));
151 return str;
152 }
153
getISize()154 SkISize getISize() override { return SkISize::Make(500, 240); }
155
onDraw(SkCanvas * canvas)156 void onDraw(SkCanvas* canvas) override {
157
158 const struct {
159 SkColor fColor;
160 const char* fName;
161 SkClipOp fOp;
162 } gOps[] = {
163 {SK_ColorBLACK, "Difference", SkClipOp::kDifference},
164 {SK_ColorRED, "Intersect", SkClipOp::kIntersect},
165 };
166
167 SkPaint textPaint;
168 SkFont font(ToolUtils::DefaultPortableTypeface(), 24);
169 int xOff = 0;
170
171 for (size_t op = 0; op < std::size(gOps); op++) {
172 canvas->drawString(gOps[op].fName, 75.0f, 50.0f, font, textPaint);
173
174 if (kAAClip_GeomType == fGeomType) {
175 this->drawRgnOped(canvas, gOps[op].fOp, gOps[op].fColor);
176 } else {
177 this->drawPathsOped(canvas, gOps[op].fOp, gOps[op].fColor);
178 }
179
180 if (xOff >= 400) {
181 canvas->translate(SkIntToScalar(-400), SkIntToScalar(250));
182 xOff = 0;
183 } else {
184 canvas->translate(SkIntToScalar(200), 0);
185 xOff += 200;
186 }
187 }
188 }
189 private:
190
191 SkGeomTypes fGeomType;
192
193 SkRect fBase;
194 SkRect fRect;
195
196 SkPath fBasePath; // fBase as a round rect
197 SkPath fRectPath; // fRect as a round rect
198
199 using INHERITED = GM;
200 };
201
202 //////////////////////////////////////////////////////////////////////////////
203
204 // rects
205 DEF_GM( return new SimpleClipGM(SimpleClipGM::kRect_GeomType); )
206 DEF_GM( return new SimpleClipGM(SimpleClipGM::kPath_GeomType); )
207 DEF_GM( return new SimpleClipGM(SimpleClipGM::kAAClip_GeomType); )
208
209 } // namespace skiagm
210