1 /*
2  * Copyright 2016 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/SkBlurTypes.h"
10 #include "include/core/SkCanvas.h"
11 #include "include/core/SkColor.h"
12 #include "include/core/SkImageFilter.h"
13 #include "include/core/SkMaskFilter.h"
14 #include "include/core/SkPaint.h"
15 #include "include/core/SkPathEffect.h"
16 #include "include/core/SkPoint.h"
17 #include "include/core/SkRegion.h"
18 #include "include/core/SkShader.h"
19 #include "include/core/SkSize.h"
20 #include "include/core/SkString.h"
21 #include "include/core/SkTileMode.h"
22 #include "include/effects/SkDashPathEffect.h"
23 #include "include/effects/SkGradientShader.h"
24 #include "include/effects/SkImageFilters.h"
25 
26 class DrawRegionModesGM : public skiagm::GM {
27 public:
DrawRegionModesGM()28     DrawRegionModesGM() {}
29 
30 protected:
onShortName()31     SkString onShortName() override {
32         return SkString("drawregionmodes");
33     }
34 
onISize()35     SkISize onISize() override {
36         return SkISize::Make(375, 500);
37     }
38 
onOnceBeforeDraw()39     void onOnceBeforeDraw() override {
40         fRegion.op({50,  50, 100, 100}, SkRegion::kUnion_Op);
41         fRegion.op({50, 100, 150, 150}, SkRegion::kUnion_Op);
42     }
43 
onDraw(SkCanvas * canvas)44     void onDraw(SkCanvas* canvas) override {
45         canvas->clear(SK_ColorGREEN);
46 
47         SkPaint paint;
48         paint.setStyle(SkPaint::kFill_Style);
49         paint.setColor(SK_ColorRED);
50         paint.setAntiAlias(true);
51 
52         canvas->save();
53         canvas->translate(-50.0f, 75.0f);
54         canvas->rotate(-45.0f);
55         canvas->drawRegion(fRegion, paint);
56 
57         canvas->translate(125.0f, 125.0f);
58         paint.setImageFilter(SkImageFilters::Blur(5.0f, 5.0f, nullptr, nullptr));
59         canvas->drawRegion(fRegion, paint);
60 
61         canvas->translate(-125.0f, 125.0f);
62         paint.setImageFilter(nullptr);
63         paint.setMaskFilter(SkMaskFilter::MakeBlur(kNormal_SkBlurStyle, 5.0f));
64         canvas->drawRegion(fRegion, paint);
65 
66         canvas->translate(-125.0f, -125.0f);
67         paint.setMaskFilter(nullptr);
68         paint.setStyle(SkPaint::kStroke_Style);
69         float intervals[] = { 5.0f, 5.0f };
70         paint.setPathEffect(SkDashPathEffect::Make(intervals, 2, 2.5f));
71         canvas->drawRegion(fRegion, paint);
72 
73         canvas->restore();
74 
75         canvas->translate(100, 325);
76         paint.setPathEffect(nullptr);
77         paint.setStyle(SkPaint::kFill_Style);
78         SkPoint points[] = { SkPoint::Make(50.0f, 50.0f), SkPoint::Make(150.0f, 150.0f) };
79         SkColor colors[] = { SK_ColorBLUE, SK_ColorYELLOW };
80         paint.setShader(SkGradientShader::MakeLinear(points, colors, nullptr, 2,
81                                                      SkTileMode::kClamp));
82         canvas->drawRegion(fRegion, paint);
83     }
84 
85 private:
86     SkRegion fRegion;
87 
88     using INHERITED = skiagm::GM;
89 };
90 DEF_GM( return new DrawRegionModesGM; )
91