1 /*
2  * Copyright 2014 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 
10 #include "SkBlurMask.h"
11 #include "SkCanvas.h"
12 #include "SkColorFilter.h"
13 #include "SkEmbossMaskFilter.h"
14 #include "SkFont.h"
15 
make_bm()16 static SkBitmap make_bm() {
17     SkBitmap bm;
18     bm.allocN32Pixels(100, 100);
19 
20     SkCanvas canvas(bm);
21     canvas.clear(0);
22     SkPaint paint;
23     paint.setAntiAlias(true);
24     canvas.drawCircle(50, 50, 50, paint);
25     return bm;
26 }
27 
28 class EmbossGM : public skiagm::GM {
29 public:
EmbossGM()30     EmbossGM() {
31     }
32 
33 protected:
onShortName()34     SkString onShortName() override {
35         return SkString("emboss");
36     }
37 
onISize()38     SkISize onISize() override {
39         return SkISize::Make(600, 120);
40     }
41 
onDraw(SkCanvas * canvas)42     void onDraw(SkCanvas* canvas) override {
43         SkPaint paint;
44         SkBitmap bm = make_bm();
45         canvas->drawBitmap(bm, 10, 10, &paint);
46         canvas->translate(bm.width() + SkIntToScalar(10), 0);
47 
48         paint.setMaskFilter(SkEmbossMaskFilter::Make(
49             SkBlurMask::ConvertRadiusToSigma(3),
50             { { SK_Scalar1, SK_Scalar1, SK_Scalar1 }, 0, 128, 16*2 }));
51         canvas->drawBitmap(bm, 10, 10, &paint);
52         canvas->translate(bm.width() + SkIntToScalar(10), 0);
53 
54         // this combination of emboss+colorfilter used to crash -- so we exercise it to
55         // confirm that we have a fix.
56         paint.setColorFilter(SkColorFilter::MakeModeFilter(0xFFFF0000, SkBlendMode::kSrcATop));
57         canvas->drawBitmap(bm, 10, 10, &paint);
58         canvas->translate(bm.width() + SkIntToScalar(10), 0);
59 
60         paint.setAntiAlias(true);
61         paint.setStyle(SkPaint::kStroke_Style);
62         paint.setStrokeWidth(SkIntToScalar(10));
63         paint.setMaskFilter(SkEmbossMaskFilter::Make(
64             SkBlurMask::ConvertRadiusToSigma(4),
65             { { SK_Scalar1, SK_Scalar1, SK_Scalar1 }, 0, 128, 16*2 }));
66         paint.setColorFilter(nullptr);
67         paint.setShader(SkShader::MakeColorShader(SK_ColorBLUE));
68         paint.setDither(true);
69         canvas->drawCircle(SkIntToScalar(50), SkIntToScalar(50),
70                            SkIntToScalar(30), paint);
71         canvas->translate(SkIntToScalar(100), 0);
72 
73         paint.setStyle(SkPaint::kFill_Style);
74         canvas->drawString("Hello", 0, 50, SkFont(nullptr, 50), paint);
75     }
76 
77 private:
78     typedef skiagm::GM INHERITED;
79 };
80 
81 DEF_GM(return new EmbossGM;)
82