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/gm.h"
9 #include "include/core/SkBitmap.h"
10 #include "include/core/SkBlendMode.h"
11 #include "include/core/SkCanvas.h"
12 #include "include/core/SkColor.h"
13 #include "include/core/SkColorFilter.h"
14 #include "include/core/SkFont.h"
15 #include "include/core/SkMaskFilter.h"
16 #include "include/core/SkPaint.h"
17 #include "include/core/SkScalar.h"
18 #include "include/core/SkShader.h"
19 #include "include/core/SkSize.h"
20 #include "include/core/SkString.h"
21 #include "include/core/SkTypeface.h"
22 #include "src/core/SkBlurMask.h"
23 #include "src/effects/SkEmbossMaskFilter.h"
24
make_bm()25 static SkBitmap make_bm() {
26 SkBitmap bm;
27 bm.allocN32Pixels(100, 100);
28
29 SkCanvas canvas(bm);
30 canvas.clear(0);
31 SkPaint paint;
32 paint.setAntiAlias(true);
33 canvas.drawCircle(50, 50, 50, paint);
34 return bm;
35 }
36
37 class EmbossGM : public skiagm::GM {
38 public:
EmbossGM()39 EmbossGM() {
40 }
41
42 protected:
onShortName()43 SkString onShortName() override {
44 return SkString("emboss");
45 }
46
onISize()47 SkISize onISize() override {
48 return SkISize::Make(600, 120);
49 }
50
onDraw(SkCanvas * canvas)51 void onDraw(SkCanvas* canvas) override {
52 SkPaint paint;
53 SkBitmap bm = make_bm();
54 canvas->drawBitmap(bm, 10, 10, &paint);
55 canvas->translate(bm.width() + SkIntToScalar(10), 0);
56
57 paint.setMaskFilter(SkEmbossMaskFilter::Make(
58 SkBlurMask::ConvertRadiusToSigma(3),
59 { { SK_Scalar1, SK_Scalar1, SK_Scalar1 }, 0, 128, 16*2 }));
60 canvas->drawBitmap(bm, 10, 10, &paint);
61 canvas->translate(bm.width() + SkIntToScalar(10), 0);
62
63 // this combination of emboss+colorfilter used to crash -- so we exercise it to
64 // confirm that we have a fix.
65 paint.setColorFilter(SkColorFilters::Blend(0xFFFF0000, SkBlendMode::kSrcATop));
66 canvas->drawBitmap(bm, 10, 10, &paint);
67 canvas->translate(bm.width() + SkIntToScalar(10), 0);
68
69 paint.setAntiAlias(true);
70 paint.setStyle(SkPaint::kStroke_Style);
71 paint.setStrokeWidth(SkIntToScalar(10));
72 paint.setMaskFilter(SkEmbossMaskFilter::Make(
73 SkBlurMask::ConvertRadiusToSigma(4),
74 { { SK_Scalar1, SK_Scalar1, SK_Scalar1 }, 0, 128, 16*2 }));
75 paint.setColorFilter(nullptr);
76 paint.setShader(SkShaders::Color(SK_ColorBLUE));
77 paint.setDither(true);
78 canvas->drawCircle(SkIntToScalar(50), SkIntToScalar(50),
79 SkIntToScalar(30), paint);
80 canvas->translate(SkIntToScalar(100), 0);
81
82 paint.setStyle(SkPaint::kFill_Style);
83 canvas->drawString("Hello", 0, 50, SkFont(nullptr, 50), paint);
84 }
85
86 private:
87 typedef skiagm::GM INHERITED;
88 };
89
90 DEF_GM(return new EmbossGM;)
91