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1 /* | 1 /* |
2 * Copyright 2015 Google Inc. | 2 * Copyright 2015 Google Inc. |
3 * | 3 * |
4 * Use of this source code is governed by a BSD-style license that can be | 4 * Use of this source code is governed by a BSD-style license that can be |
5 * found in the LICENSE file. | 5 * found in the LICENSE file. |
6 */ | 6 */ |
7 | 7 |
8 | 8 |
9 /* | 9 /* |
10 * Tests text rendering with LCD and the various blend modes. | 10 * Tests text rendering with LCD and the various blend modes. |
11 */ | 11 */ |
12 | 12 |
13 #include "gm.h" | 13 #include "gm.h" |
14 #include "SkCanvas.h" | 14 #include "SkCanvas.h" |
15 #include "SkGradientShader.h" | 15 #include "SkGradientShader.h" |
16 #include "SkSurface.h" | |
16 | 17 |
17 namespace skiagm { | 18 namespace skiagm { |
18 | 19 |
19 static const int kColWidth = 180; | 20 static const int kColWidth = 180; |
20 static const int kNumCols = 4; | 21 static const int kNumCols = 4; |
21 static const int kWidth = kColWidth * kNumCols; | 22 static const int kWidth = kColWidth * kNumCols; |
22 static const int kHeight = 750; | 23 static const int kHeight = 750; |
23 | 24 |
24 static SkShader* make_shader(const SkRect& bounds) { | 25 static SkShader* make_shader(const SkRect& bounds) { |
25 const SkPoint pts[] = { | 26 const SkPoint pts[] = { |
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36 | 37 |
37 class LcdBlendGM : public skiagm::GM { | 38 class LcdBlendGM : public skiagm::GM { |
38 public: | 39 public: |
39 LcdBlendGM() { | 40 LcdBlendGM() { |
40 const int kPointSize = 25; | 41 const int kPointSize = 25; |
41 fTextHeight = SkIntToScalar(kPointSize); | 42 fTextHeight = SkIntToScalar(kPointSize); |
42 } | 43 } |
43 | 44 |
44 protected: | 45 protected: |
45 SkString onShortName() override { | 46 SkString onShortName() override { |
46 SkString name("lcdblendmodes"); | 47 return SkString("lcdblendmodes"); |
bsalomon
2015/09/15 19:08:34
why this change?
egdaniel
2015/09/15 19:10:30
I was confused about the need for sk_tool_utils::m
| |
47 name.append(sk_tool_utils::major_platform_os_name()); | 48 } |
48 return name; | 49 |
50 void onOnceBeforeDraw() override { | |
51 fCheckerboard.reset(sk_tool_utils::create_checkerboard_shader(SK_ColorBL ACK, | |
52 SK_ColorWH ITE, | |
53 4)); | |
49 } | 54 } |
50 | 55 |
51 SkISize onISize() override { return SkISize::Make(kWidth, kHeight); } | 56 SkISize onISize() override { return SkISize::Make(kWidth, kHeight); } |
52 | 57 |
53 void onDraw(SkCanvas* canvas) override { | 58 void onDraw(SkCanvas* canvas) override { |
54 this->drawColumn(canvas, SK_ColorBLACK, SK_ColorWHITE, false); | 59 SkPaint p; |
55 canvas->translate(SkIntToScalar(kColWidth), 0); | 60 p.setAntiAlias(false); |
56 this->drawColumn(canvas, SK_ColorWHITE, SK_ColorBLACK, false); | 61 p.setStyle(SkPaint::kFill_Style); |
57 canvas->translate(SkIntToScalar(kColWidth), 0); | 62 p.setShader(fCheckerboard); |
58 this->drawColumn(canvas, SK_ColorGREEN, SK_ColorMAGENTA, false); | 63 SkRect r = SkRect::MakeWH(SkIntToScalar(kWidth), SkIntToScalar(kHeight)) ; |
59 canvas->translate(SkIntToScalar(kColWidth), 0); | 64 canvas->drawRect(r, p); |
60 this->drawColumn(canvas, SK_ColorCYAN, SK_ColorMAGENTA, true); | 65 |
66 SkImageInfo info = SkImageInfo::MakeN32Premul(kWidth, kHeight); | |
67 SkAutoTUnref<SkSurface> surface(canvas->newSurface(info)); | |
68 if (nullptr == surface) { | |
69 surface.reset(SkSurface::NewRaster(info)); | |
70 } | |
71 | |
72 SkCanvas* surfCanvas = surface->getCanvas(); | |
73 this->drawColumn(surfCanvas, SK_ColorBLACK, SK_ColorWHITE, false); | |
74 surfCanvas->translate(SkIntToScalar(kColWidth), 0); | |
75 this->drawColumn(surfCanvas, SK_ColorWHITE, SK_ColorBLACK, false); | |
76 surfCanvas->translate(SkIntToScalar(kColWidth), 0); | |
77 this->drawColumn(surfCanvas, SK_ColorGREEN, SK_ColorMAGENTA, false); | |
78 surfCanvas->translate(SkIntToScalar(kColWidth), 0); | |
79 this->drawColumn(surfCanvas, SK_ColorCYAN, SK_ColorMAGENTA, true); | |
80 | |
81 SkPaint surfPaint; | |
82 SkAutoTUnref<SkXfermode> xfermode(SkXfermode::Create(SkXfermode::kSrcOve r_Mode)); | |
83 surfPaint.setXfermode(xfermode); | |
84 surface->draw(canvas, 0, 0, &surfPaint); | |
61 } | 85 } |
62 | 86 |
63 void drawColumn(SkCanvas* canvas, SkColor backgroundColor, SkColor textColor , bool useGrad) { | 87 void drawColumn(SkCanvas* canvas, SkColor backgroundColor, SkColor textColor , bool useGrad) { |
64 const struct { | 88 const struct { |
65 SkXfermode::Mode fMode; | 89 SkXfermode::Mode fMode; |
66 const char* fLabel; | 90 const char* fLabel; |
67 } gModes[] = { | 91 } gModes[] = { |
68 { SkXfermode::kClear_Mode, "Clear" }, | 92 { SkXfermode::kClear_Mode, "Clear" }, |
69 { SkXfermode::kSrc_Mode, "Src" }, | 93 { SkXfermode::kSrc_Mode, "Src" }, |
70 { SkXfermode::kDst_Mode, "Dst" }, | 94 { SkXfermode::kDst_Mode, "Dst" }, |
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117 paint.setShader(make_shader(r))->unref(); | 141 paint.setShader(make_shader(r))->unref(); |
118 } | 142 } |
119 SkString string(gModes[m].fLabel); | 143 SkString string(gModes[m].fLabel); |
120 canvas->drawText(gModes[m].fLabel, string.size(), 0, y, paint); | 144 canvas->drawText(gModes[m].fLabel, string.size(), 0, y, paint); |
121 y+=fTextHeight; | 145 y+=fTextHeight; |
122 } | 146 } |
123 } | 147 } |
124 | 148 |
125 private: | 149 private: |
126 SkScalar fTextHeight; | 150 SkScalar fTextHeight; |
151 SkAutoTUnref<SkShader> fCheckerboard; | |
127 typedef skiagm::GM INHERITED; | 152 typedef skiagm::GM INHERITED; |
128 }; | 153 }; |
129 | 154 |
130 ////////////////////////////////////////////////////////////////////////////// | 155 ////////////////////////////////////////////////////////////////////////////// |
131 | 156 |
132 DEF_GM( return new LcdBlendGM; ) | 157 DEF_GM( return new LcdBlendGM; ) |
133 } | 158 } |
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