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.h"
9 #include "sk_tool_utils.h"
10 #include "SkAAClip.h"
11 #include "SkCanvas.h"
12 #include "SkPath.h"
13
14 namespace skiagm {
15
paint_rgn(SkCanvas * canvas,const SkAAClip & clip,const SkPaint & paint)16 static void paint_rgn(SkCanvas* canvas, const SkAAClip& clip,
17 const SkPaint& paint) {
18 SkMask mask;
19 SkBitmap bm;
20
21 clip.copyToMask(&mask);
22
23 SkAutoMaskFreeImage amfi(mask.fImage);
24
25 bm.installMaskPixels(mask);
26
27 // need to copy for deferred drawing test to work
28 SkBitmap bm2;
29
30 sk_tool_utils::copy_to(&bm2, bm.colorType(), bm);
31
32 canvas->drawBitmap(bm2,
33 SK_Scalar1 * mask.fBounds.fLeft,
34 SK_Scalar1 * mask.fBounds.fTop,
35 &paint);
36 }
37
38 //////////////////////////////////////////////////////////////////////////////
39 /*
40 * This GM tests anti aliased single operation booleans with SkAAClips,
41 * SkRect and SkPaths.
42 */
43 class SimpleClipGM : public GM {
44 public:
45 enum SkGeomTypes {
46 kRect_GeomType,
47 kPath_GeomType,
48 kAAClip_GeomType
49 };
50
SimpleClipGM(SkGeomTypes geomType)51 SimpleClipGM(SkGeomTypes geomType)
52 : fGeomType(geomType) {
53 }
54
55 protected:
onOnceBeforeDraw()56 void onOnceBeforeDraw() override {
57 // offset the rects a bit so we get anti-aliasing in the rect case
58 fBase.set(100.65f,
59 100.65f,
60 150.65f,
61 150.65f);
62 fRect = fBase;
63 fRect.inset(5, 5);
64 fRect.offset(25, 25);
65
66 fBasePath.addRoundRect(fBase, SkIntToScalar(5), SkIntToScalar(5));
67 fRectPath.addRoundRect(fRect, SkIntToScalar(5), SkIntToScalar(5));
68 INHERITED::setBGColor(sk_tool_utils::color_to_565(0xFFDDDDDD));
69 }
70
buildRgn(SkAAClip * clip,SkClipOp op)71 void buildRgn(SkAAClip* clip, SkClipOp op) {
72 clip->setPath(fBasePath, nullptr, true);
73
74 SkAAClip clip2;
75 clip2.setPath(fRectPath, nullptr, true);
76 clip->op(clip2, (SkRegion::Op)op);
77 }
78
drawOrig(SkCanvas * canvas)79 void drawOrig(SkCanvas* canvas) {
80 SkPaint paint;
81
82 paint.setStyle(SkPaint::kStroke_Style);
83 paint.setColor(SK_ColorBLACK);
84
85 canvas->drawRect(fBase, paint);
86 canvas->drawRect(fRect, paint);
87 }
88
drawRgnOped(SkCanvas * canvas,SkClipOp op,SkColor color)89 void drawRgnOped(SkCanvas* canvas, SkClipOp op, SkColor color) {
90
91 SkAAClip clip;
92
93 this->buildRgn(&clip, op);
94 this->drawOrig(canvas);
95
96 SkPaint paint;
97 paint.setColor(color);
98 paint_rgn(canvas, clip, paint);
99 }
100
drawPathsOped(SkCanvas * canvas,SkClipOp op,SkColor color)101 void drawPathsOped(SkCanvas* canvas, SkClipOp op, SkColor color) {
102
103 this->drawOrig(canvas);
104
105 canvas->save();
106
107 // create the clip mask with the supplied boolean op
108 if (kPath_GeomType == fGeomType) {
109 // path-based case
110 canvas->clipPath(fBasePath, true);
111 canvas->clipPath(fRectPath, op, true);
112 } else {
113 // rect-based case
114 canvas->clipRect(fBase, true);
115 canvas->clipRect(fRect, op, true);
116 }
117
118 // draw a rect that will entirely cover the clip mask area
119 SkPaint paint;
120 paint.setColor(color);
121
122 SkRect r = SkRect::MakeLTRB(SkIntToScalar(90), SkIntToScalar(90),
123 SkIntToScalar(180), SkIntToScalar(180));
124
125 canvas->drawRect(r, paint);
126
127 canvas->restore();
128 }
129
onShortName()130 SkString onShortName() override {
131 SkString str;
132 str.printf("simpleaaclip_%s",
133 kRect_GeomType == fGeomType ? "rect" :
134 (kPath_GeomType == fGeomType ? "path" :
135 "aaclip"));
136 return str;
137 }
138
onISize()139 SkISize onISize() override {
140 return SkISize::Make(640, 480);
141 }
142
onDraw(SkCanvas * canvas)143 void onDraw(SkCanvas* canvas) override {
144
145 const struct {
146 SkColor fColor;
147 const char* fName;
148 SkClipOp fOp;
149 } gOps[] = {
150 { SK_ColorBLACK, "Difference", kDifference_SkClipOp },
151 { SK_ColorRED, "Intersect", kIntersect_SkClipOp },
152 { sk_tool_utils::color_to_565(0xFF008800), "Union", kUnion_SkClipOp },
153 { SK_ColorGREEN, "Rev Diff", kReverseDifference_SkClipOp },
154 { SK_ColorYELLOW, "Replace", kReplace_SkClipOp },
155 { SK_ColorBLUE, "XOR", kXOR_SkClipOp },
156 };
157
158 SkPaint textPaint;
159 textPaint.setAntiAlias(true);
160 sk_tool_utils::set_portable_typeface(&textPaint);
161 textPaint.setTextSize(SK_Scalar1*24);
162 int xOff = 0;
163
164 for (size_t op = 0; op < SK_ARRAY_COUNT(gOps); op++) {
165 canvas->drawString(gOps[op].fName,
166 SkIntToScalar(75), SkIntToScalar(50),
167 textPaint);
168
169 if (kAAClip_GeomType == fGeomType) {
170 this->drawRgnOped(canvas, gOps[op].fOp, gOps[op].fColor);
171 } else {
172 this->drawPathsOped(canvas, gOps[op].fOp, gOps[op].fColor);
173 }
174
175 if (xOff >= 400) {
176 canvas->translate(SkIntToScalar(-400), SkIntToScalar(250));
177 xOff = 0;
178 } else {
179 canvas->translate(SkIntToScalar(200), 0);
180 xOff += 200;
181 }
182 }
183 }
184 private:
185
186 SkGeomTypes fGeomType;
187
188 SkRect fBase;
189 SkRect fRect;
190
191 SkPath fBasePath; // fBase as a round rect
192 SkPath fRectPath; // fRect as a round rect
193
194 typedef GM INHERITED;
195 };
196
197 //////////////////////////////////////////////////////////////////////////////
198
199 // rects
200 DEF_GM( return new SimpleClipGM(SimpleClipGM::kRect_GeomType); )
201 DEF_GM( return new SimpleClipGM(SimpleClipGM::kPath_GeomType); )
202 DEF_GM( return new SimpleClipGM(SimpleClipGM::kAAClip_GeomType); )
203
204 }
205