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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 #include "SkCanvas.h" | |
10 #include "SkColorFilter.h" | |
11 #include "SkGradientShader.h" | |
12 | |
13 static SkShader* make_shader(const SkRect& bounds) { | |
14 const SkPoint pts[] = { | |
15 { bounds.left(), bounds.top() }, | |
16 { bounds.right(), bounds.bottom() }, | |
17 }; | |
18 const SkColor colors[] = { | |
19 SK_ColorRED, SK_ColorGREEN, SK_ColorBLUE, SK_ColorBLACK, | |
20 SK_ColorCYAN, SK_ColorMAGENTA, SK_ColorYELLOW, | |
21 }; | |
22 return SkGradientShader::CreateLinear(pts, | |
23 colors, NULL, SK_ARRAY_COUNT(colors), | |
24 SkShader::kClamp_TileMode); | |
25 } | |
26 | |
27 typedef void (*InstallPaint)(SkPaint*, uint32_t, uint32_t); | |
28 | |
29 static void install_nothing(SkPaint* paint, uint32_t, uint32_t) { | |
30 paint->setColorFilter(NULL); | |
31 } | |
32 | |
33 static void install_lighting(SkPaint* paint, uint32_t mul, uint32_t add) { | |
34 paint->setColorFilter(SkColorFilter::CreateLightingFilter(mul, add))->unref( ); | |
35 } | |
36 | |
37 class ColorFiltersGM : public skiagm::GM { | |
38 public: | |
39 ColorFiltersGM() { | |
40 fName.set("lightingcolorfilter"); | |
tfarina
2014/02/06 16:31:33
is this equivalent to:
ColorFiltersGM() : fName("
| |
41 } | |
42 | |
43 protected: | |
44 virtual SkString onShortName() { | |
45 return fName; | |
46 } | |
47 | |
48 virtual SkISize onISize() { | |
49 return SkISize::Make(640, 480); | |
50 } | |
51 | |
52 virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { | |
53 SkPaint paint; | |
54 SkRect r; | |
55 r.setWH(600, 50); | |
56 paint.setShader(make_shader(r))->unref(); | |
57 | |
58 const struct { | |
59 InstallPaint fProc; | |
60 uint32_t fData0, fData1; | |
61 } rec[] = { | |
62 { install_nothing, 0, 0 }, | |
63 { install_lighting, 0xFF0000, 0 }, | |
64 { install_lighting, 0x00FF00, 0 }, | |
65 { install_lighting, 0x0000FF, 0 }, | |
66 { install_lighting, 0x000000, 0xFF0000 }, | |
67 { install_lighting, 0x000000, 0x00FF00 }, | |
68 { install_lighting, 0x000000, 0x0000FF }, | |
69 }; | |
70 | |
71 canvas->translate(10, 10); | |
72 for (size_t i = 0; i < SK_ARRAY_COUNT(rec); ++i) { | |
73 rec[i].fProc(&paint, rec[i].fData0, rec[i].fData1); | |
74 canvas->drawRect(r, paint); | |
75 canvas->translate(0, r.height() + 10); | |
76 } | |
77 } | |
78 | |
79 private: | |
80 SkString fName; | |
81 typedef GM INHERITED; | |
82 }; | |
83 | |
84 | |
85 ////////////////////////////////////////////////////////////////////////////// | |
86 | |
87 DEF_GM( return SkNEW(ColorFiltersGM); ) | |
88 | |
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