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.h"
9#include "SkBlurMaskFilter.h"
10#include "SkCanvas.h"
11#include "SkDashPathEffect.h"
12#include "SkGradientShader.h"
13#include "SkImageFilter.h"
14#include "SkRegion.h"
15
16class DrawRegionModesGM : public skiagm::GM {
17public:
18    DrawRegionModesGM() {}
19
20protected:
21    SkString onShortName() override {
22        return SkString("drawregionmodes");
23    }
24
25    SkISize onISize() override {
26        return SkISize::Make(375, 500);
27    }
28
29    void onOnceBeforeDraw() override {
30        fRegion.op( 50,  50, 100, 100, SkRegion::kUnion_Op);
31        fRegion.op( 50, 100, 150, 150, SkRegion::kUnion_Op);
32    }
33
34    void onDraw(SkCanvas* canvas) override {
35        canvas->clear(SK_ColorGREEN);
36
37        SkPaint paint;
38        paint.setStyle(SkPaint::kFill_Style);
39        paint.setColor(0xFFFF0000);
40        paint.setAntiAlias(true);
41
42        canvas->translate(-50.0f, 75.0f);
43        canvas->rotate(-45.0f);
44        canvas->drawRegion(fRegion, paint);
45
46        canvas->translate(125.0f, 125.0f);
47        paint.setImageFilter(SkImageFilter::MakeBlur(5.0f, 5.0f, nullptr, nullptr));
48        canvas->drawRegion(fRegion, paint);
49
50        canvas->translate(-125.0f, 125.0f);
51        paint.setImageFilter(nullptr);
52        SkRect occluder = SkRect::MakeEmpty();
53        paint.setMaskFilter(SkBlurMaskFilter::Make(kNormal_SkBlurStyle, 5.0f, occluder, 0));
54        canvas->drawRegion(fRegion, paint);
55
56        canvas->translate(-125.0f, -125.0f);
57        paint.setMaskFilter(nullptr);
58        paint.setStyle(SkPaint::kStroke_Style);
59        float intervals[] = { 5.0f, 5.0f };
60        paint.setPathEffect(SkDashPathEffect::Make(intervals, 2, 2.5f));
61        canvas->drawRegion(fRegion, paint);
62
63        canvas->setMatrix(SkMatrix::I());
64        canvas->translate(100, 325);
65        paint.setPathEffect(nullptr);
66        paint.setStyle(SkPaint::kFill_Style);
67        SkPoint points[] = { SkPoint::Make(50.0f, 50.0f), SkPoint::Make(150.0f, 150.0f) };
68        SkColor colors[] = { SK_ColorBLUE, SK_ColorYELLOW };
69        paint.setShader(SkGradientShader::MakeLinear(points, colors, nullptr, 2,
70                                                     SkShader::kClamp_TileMode));
71        canvas->drawRegion(fRegion, paint);
72    }
73
74    SkRegion fRegion;
75
76private:
77    typedef skiagm::GM INHERITED;
78};
79DEF_GM( return new DrawRegionModesGM; )
80