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
9 #include "gm.h"
10 #include "SkCanvas.h"
11 #include "SkAAClip.h"
12
13 namespace skiagm {
14
paint_rgn(SkCanvas * canvas,const SkAAClip & clip,const SkPaint & paint)15 static void paint_rgn(SkCanvas* canvas, const SkAAClip& clip,
16 const SkPaint& paint) {
17 SkMask mask;
18 SkBitmap bm;
19
20 clip.copyToMask(&mask);
21
22 SkAutoMaskFreeImage amfi(mask.fImage);
23
24 bm.installMaskPixels(mask);
25
26 // need to copy for deferred drawing test to work
27 SkBitmap bm2;
28
29 bm.deepCopyTo(&bm2);
30
31 canvas->drawBitmap(bm2,
32 SK_Scalar1 * mask.fBounds.fLeft,
33 SK_Scalar1 * mask.fBounds.fTop,
34 &paint);
35 }
36
37 //////////////////////////////////////////////////////////////////////////////
38 /*
39 * This GM tests anti aliased single operation booleans with SkAAClips,
40 * SkRect and SkPaths.
41 */
42 class SimpleClipGM : public GM {
43 public:
44 enum SkGeomTypes {
45 kRect_GeomType,
46 kPath_GeomType,
47 kAAClip_GeomType
48 };
49
SimpleClipGM(SkGeomTypes geomType)50 SimpleClipGM(SkGeomTypes geomType)
51 : fGeomType(geomType) {
52 }
53
54 protected:
onOnceBeforeDraw()55 void onOnceBeforeDraw() override {
56 // offset the rects a bit so we get anti-aliasing in the rect case
57 fBase.set(100.65f,
58 100.65f,
59 150.65f,
60 150.65f);
61 fRect = fBase;
62 fRect.inset(5, 5);
63 fRect.offset(25, 25);
64
65 fBasePath.addRoundRect(fBase, SkIntToScalar(5), SkIntToScalar(5));
66 fRectPath.addRoundRect(fRect, SkIntToScalar(5), SkIntToScalar(5));
67 INHERITED::setBGColor(0xFFDDDDDD);
68 }
69
buildRgn(SkAAClip * clip,SkRegion::Op op)70 void buildRgn(SkAAClip* clip, SkRegion::Op op) {
71 clip->setPath(fBasePath, NULL, true);
72
73 SkAAClip clip2;
74 clip2.setPath(fRectPath, NULL, true);
75 clip->op(clip2, op);
76 }
77
drawOrig(SkCanvas * canvas)78 void drawOrig(SkCanvas* canvas) {
79 SkPaint paint;
80
81 paint.setStyle(SkPaint::kStroke_Style);
82 paint.setColor(SK_ColorBLACK);
83
84 canvas->drawRect(fBase, paint);
85 canvas->drawRect(fRect, paint);
86 }
87
drawRgnOped(SkCanvas * canvas,SkRegion::Op op,SkColor color)88 void drawRgnOped(SkCanvas* canvas, SkRegion::Op op, SkColor color) {
89
90 SkAAClip clip;
91
92 this->buildRgn(&clip, op);
93 this->drawOrig(canvas);
94
95 SkPaint paint;
96 paint.setColor(color);
97 paint_rgn(canvas, clip, paint);
98 }
99
drawPathsOped(SkCanvas * canvas,SkRegion::Op op,SkColor color)100 void drawPathsOped(SkCanvas* canvas, SkRegion::Op op, SkColor color) {
101
102 this->drawOrig(canvas);
103
104 canvas->save();
105
106 // create the clip mask with the supplied boolean op
107 if (kPath_GeomType == fGeomType) {
108 // path-based case
109 canvas->clipPath(fBasePath, SkRegion::kReplace_Op, true);
110 canvas->clipPath(fRectPath, op, true);
111 } else {
112 // rect-based case
113 canvas->clipRect(fBase, SkRegion::kReplace_Op, true);
114 canvas->clipRect(fRect, op, true);
115 }
116
117 // draw a rect that will entirely cover the clip mask area
118 SkPaint paint;
119 paint.setColor(color);
120
121 SkRect r = SkRect::MakeLTRB(SkIntToScalar(90), SkIntToScalar(90),
122 SkIntToScalar(180), SkIntToScalar(180));
123
124 canvas->drawRect(r, paint);
125
126 canvas->restore();
127 }
128
onShortName()129 virtual SkString onShortName() {
130 SkString str;
131 str.printf("simpleaaclip_%s",
132 kRect_GeomType == fGeomType ? "rect" :
133 (kPath_GeomType == fGeomType ? "path" :
134 "aaclip"));
135 return str;
136 }
137
onISize()138 virtual SkISize onISize() {
139 return SkISize::Make(640, 480);
140 }
141
onDraw(SkCanvas * canvas)142 virtual void onDraw(SkCanvas* canvas) {
143
144 static const struct {
145 SkColor fColor;
146 const char* fName;
147 SkRegion::Op fOp;
148 } gOps[] = {
149 { SK_ColorBLACK, "Difference", SkRegion::kDifference_Op },
150 { SK_ColorRED, "Intersect", SkRegion::kIntersect_Op },
151 { 0xFF008800, "Union", SkRegion::kUnion_Op },
152 { SK_ColorGREEN, "Rev Diff", SkRegion::kReverseDifference_Op },
153 { SK_ColorYELLOW, "Replace", SkRegion::kReplace_Op },
154 { SK_ColorBLUE, "XOR", SkRegion::kXOR_Op },
155 };
156
157 SkPaint textPaint;
158 textPaint.setAntiAlias(true);
159 sk_tool_utils::set_portable_typeface(&textPaint);
160 textPaint.setTextSize(SK_Scalar1*24);
161 int xOff = 0;
162
163 for (size_t op = 0; op < SK_ARRAY_COUNT(gOps); op++) {
164 canvas->drawText(gOps[op].fName, strlen(gOps[op].fName),
165 SkIntToScalar(75), SkIntToScalar(50),
166 textPaint);
167
168 if (kAAClip_GeomType == fGeomType) {
169 this->drawRgnOped(canvas, gOps[op].fOp, gOps[op].fColor);
170 } else {
171 this->drawPathsOped(canvas, gOps[op].fOp, gOps[op].fColor);
172 }
173
174 if (xOff >= 400) {
175 canvas->translate(SkIntToScalar(-400), SkIntToScalar(250));
176 xOff = 0;
177 } else {
178 canvas->translate(SkIntToScalar(200), 0);
179 xOff += 200;
180 }
181 }
182 }
183 private:
184
185 SkGeomTypes fGeomType;
186
187 SkRect fBase;
188 SkRect fRect;
189
190 SkPath fBasePath; // fBase as a round rect
191 SkPath fRectPath; // fRect as a round rect
192
193 typedef GM INHERITED;
194 };
195
196 //////////////////////////////////////////////////////////////////////////////
197
198 // rects
199 DEF_GM( return new SimpleClipGM(SimpleClipGM::kRect_GeomType); )
200 DEF_GM( return new SimpleClipGM(SimpleClipGM::kPath_GeomType); )
201 DEF_GM( return new SimpleClipGM(SimpleClipGM::kAAClip_GeomType); )
202
203 }
204