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/SkSurface.h"
22 #include "include/core/SkTypeface.h"
23 #include "src/core/SkBlurMask.h"
24 #include "src/effects/SkEmbossMaskFilter.h"
25 #include "tools/fonts/FontToolUtils.h"
26
make_bm()27 static sk_sp<SkImage> make_bm() {
28 auto surf = SkSurfaces::Raster(SkImageInfo::MakeN32Premul(100, 100));
29
30 SkPaint paint;
31 paint.setAntiAlias(true);
32 surf->getCanvas()->drawCircle(50, 50, 50, paint);
33 return surf->makeImageSnapshot();
34 }
35
36 class EmbossGM : public skiagm::GM {
37 public:
EmbossGM()38 EmbossGM() {
39 }
40
41 protected:
getName() const42 SkString getName() const override { return SkString("emboss"); }
43
getISize()44 SkISize getISize() override { return SkISize::Make(600, 120); }
45
onDraw(SkCanvas * canvas)46 void onDraw(SkCanvas* canvas) override {
47 SkPaint paint;
48 auto img = make_bm();
49 canvas->drawImage(img, 10, 10);
50 canvas->translate(img->width() + SkIntToScalar(10), 0);
51
52 paint.setMaskFilter(SkEmbossMaskFilter::Make(
53 SkBlurMask::ConvertRadiusToSigma(3),
54 { { SK_Scalar1, SK_Scalar1, SK_Scalar1 }, 0, 128, 16*2 }));
55 canvas->drawImage(img, 10, 10, SkSamplingOptions(), &paint);
56 canvas->translate(img->width() + SkIntToScalar(10), 0);
57
58 // this combination of emboss+colorfilter used to crash -- so we exercise it to
59 // confirm that we have a fix.
60 paint.setColorFilter(SkColorFilters::Blend(0xFFFF0000, SkBlendMode::kSrcATop));
61 canvas->drawImage(img, 10, 10, SkSamplingOptions(), &paint);
62 canvas->translate(img->width() + SkIntToScalar(10), 0);
63
64 paint.setAntiAlias(true);
65 paint.setStyle(SkPaint::kStroke_Style);
66 paint.setStrokeWidth(SkIntToScalar(10));
67 paint.setMaskFilter(SkEmbossMaskFilter::Make(
68 SkBlurMask::ConvertRadiusToSigma(4),
69 { { SK_Scalar1, SK_Scalar1, SK_Scalar1 }, 0, 128, 16*2 }));
70 paint.setColorFilter(nullptr);
71 paint.setShader(SkShaders::Color(SK_ColorBLUE));
72 paint.setDither(true);
73 canvas->drawCircle(SkIntToScalar(50), SkIntToScalar(50),
74 SkIntToScalar(30), paint);
75 canvas->translate(SkIntToScalar(100), 0);
76
77 SkFont font = SkFont(ToolUtils::DefaultPortableTypeface(), 50);
78 paint.setStyle(SkPaint::kFill_Style);
79 canvas->drawString("Hello", 0, 50, font, paint);
80
81 paint.setShader(nullptr);
82 paint.setColor(SK_ColorGREEN);
83 canvas->drawString("World", 0, 100, font, paint);
84 }
85
86 private:
87 using INHERITED = skiagm::GM;
88 };
89
90 DEF_GM(return new EmbossGM;)
91