Dominic Mazzoni | 394d414 | 2017-02-14 11:15:31 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017 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 | |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 8 | #include "gm/gm.h" |
| 9 | #include "include/core/SkCanvas.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 10 | #include "include/core/SkColor.h" |
| 11 | #include "include/core/SkColorFilter.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 12 | #include "include/core/SkFont.h" |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 13 | #include "include/core/SkFontTypes.h" |
| 14 | #include "include/core/SkPaint.h" |
| 15 | #include "include/core/SkPoint.h" |
| 16 | #include "include/core/SkRect.h" |
| 17 | #include "include/core/SkRefCnt.h" |
| 18 | #include "include/core/SkScalar.h" |
| 19 | #include "include/core/SkShader.h" |
| 20 | #include "include/core/SkSize.h" |
| 21 | #include "include/core/SkString.h" |
| 22 | #include "include/core/SkTileMode.h" |
| 23 | #include "include/core/SkTypeface.h" |
| 24 | #include "include/core/SkTypes.h" |
Mike Klein | c0bd9f9 | 2019-04-23 12:05:21 -0500 | [diff] [blame] | 25 | #include "include/effects/SkGradientShader.h" |
| 26 | #include "include/effects/SkHighContrastFilter.h" |
| 27 | #include "tools/ToolUtils.h" |
Dominic Mazzoni | 394d414 | 2017-02-14 11:15:31 -0800 | [diff] [blame] | 28 | |
Ben Wagner | 7fde8e1 | 2019-05-01 17:28:53 -0400 | [diff] [blame] | 29 | #include <stdio.h> |
| 30 | #include <string.h> |
| 31 | |
Dominic Mazzoni | 394d414 | 2017-02-14 11:15:31 -0800 | [diff] [blame] | 32 | using InvertStyle = SkHighContrastConfig::InvertStyle; |
| 33 | |
| 34 | static SkScalar kSize = 200; |
| 35 | static SkColor kColor1 = SkColorSetARGB(0xff, 0xff, 0xff, 0); |
| 36 | static SkColor kColor2 = SkColorSetARGB(0xff, 0x82, 0xff, 0); |
| 37 | |
| 38 | static void draw_label(SkCanvas* canvas, const SkHighContrastConfig& config) { |
| 39 | char labelBuffer[256]; |
| 40 | const char* invertStr = |
| 41 | (config.fInvertStyle == InvertStyle::kInvertBrightness ? |
| 42 | "InvBrightness" : |
| 43 | (config.fInvertStyle == InvertStyle::kInvertLightness ? |
| 44 | "InvLightness" : "NoInvert")); |
| 45 | |
| 46 | snprintf(labelBuffer, sizeof(labelBuffer), "%s%s contrast=%.1f", |
| 47 | config.fGrayscale ? "Gray " : "", |
| 48 | invertStr, |
| 49 | config.fContrast); |
| 50 | |
Mike Reed | df3d225 | 2018-12-20 17:10:27 -0500 | [diff] [blame] | 51 | SkFont font; |
Mike Klein | ea3f014 | 2019-03-20 11:12:10 -0500 | [diff] [blame] | 52 | font.setTypeface(ToolUtils::create_portable_typeface()); |
Mike Reed | df3d225 | 2018-12-20 17:10:27 -0500 | [diff] [blame] | 53 | font.setSize(0.05f); |
| 54 | font.setEdging(SkFont::Edging::kAlias); |
| 55 | |
Dominic Mazzoni | 394d414 | 2017-02-14 11:15:31 -0800 | [diff] [blame] | 56 | size_t len = strlen(labelBuffer); |
| 57 | |
Ben Wagner | 51e15a6 | 2019-05-07 15:38:46 -0400 | [diff] [blame] | 58 | SkScalar width = font.measureText(labelBuffer, len, SkTextEncoding::kUTF8); |
| 59 | canvas->drawSimpleText(labelBuffer, len, SkTextEncoding::kUTF8, 0.5f - width / 2, 0.16f, font, SkPaint()); |
Dominic Mazzoni | 394d414 | 2017-02-14 11:15:31 -0800 | [diff] [blame] | 60 | } |
| 61 | |
| 62 | static void draw_scene(SkCanvas* canvas, const SkHighContrastConfig& config) { |
| 63 | SkRect bounds = SkRect::MakeLTRB(0.0f, 0.0f, 1.0f, 1.0f); |
| 64 | SkPaint xferPaint; |
| 65 | xferPaint.setColorFilter(SkHighContrastFilter::Make(config)); |
| 66 | canvas->saveLayer(&bounds, &xferPaint); |
| 67 | |
| 68 | SkPaint paint; |
| 69 | bounds = SkRect::MakeLTRB(0.1f, 0.2f, 0.9f, 0.4f); |
| 70 | paint.setARGB(0xff, 0x66, 0x11, 0x11); |
| 71 | canvas->drawRect(bounds, paint); |
| 72 | |
Mike Reed | 1af9b48 | 2019-01-07 11:01:57 -0500 | [diff] [blame] | 73 | SkFont font; |
| 74 | font.setSize(0.15f); |
| 75 | font.setEdging(SkFont::Edging::kAlias); |
| 76 | |
Dominic Mazzoni | 394d414 | 2017-02-14 11:15:31 -0800 | [diff] [blame] | 77 | paint.setARGB(0xff, 0xbb, 0x77, 0x77); |
Mike Reed | 1af9b48 | 2019-01-07 11:01:57 -0500 | [diff] [blame] | 78 | canvas->drawString("A", 0.15f, 0.35f, font, paint); |
Dominic Mazzoni | 394d414 | 2017-02-14 11:15:31 -0800 | [diff] [blame] | 79 | |
| 80 | bounds = SkRect::MakeLTRB(0.1f, 0.8f, 0.9f, 1.0f); |
| 81 | paint.setARGB(0xff, 0xcc, 0xcc, 0xff); |
| 82 | canvas->drawRect(bounds, paint); |
| 83 | |
| 84 | paint.setARGB(0xff, 0x88, 0x88, 0xbb); |
Mike Reed | 1af9b48 | 2019-01-07 11:01:57 -0500 | [diff] [blame] | 85 | canvas->drawString("Z", 0.75f, 0.95f, font, paint); |
Dominic Mazzoni | 394d414 | 2017-02-14 11:15:31 -0800 | [diff] [blame] | 86 | |
| 87 | bounds = SkRect::MakeLTRB(0.1f, 0.4f, 0.9f, 0.6f); |
| 88 | SkPoint pts[] = { { 0, 0 }, { 1, 0 } }; |
| 89 | SkColor colors[] = { SK_ColorWHITE, SK_ColorBLACK }; |
| 90 | SkScalar pos[] = { 0.2f, 0.8f }; |
| 91 | paint.setShader(SkGradientShader::MakeLinear( |
| 92 | pts, colors, pos, |
Mike Reed | fae8fce | 2019-04-03 10:27:45 -0400 | [diff] [blame] | 93 | SK_ARRAY_COUNT(colors), SkTileMode::kClamp)); |
Dominic Mazzoni | 394d414 | 2017-02-14 11:15:31 -0800 | [diff] [blame] | 94 | canvas->drawRect(bounds, paint); |
| 95 | |
| 96 | bounds = SkRect::MakeLTRB(0.1f, 0.6f, 0.9f, 0.8f); |
| 97 | SkColor colors2[] = { SK_ColorGREEN, SK_ColorWHITE }; |
| 98 | paint.setShader(SkGradientShader::MakeLinear( |
| 99 | pts, colors2, pos, |
Mike Reed | fae8fce | 2019-04-03 10:27:45 -0400 | [diff] [blame] | 100 | SK_ARRAY_COUNT(colors2), SkTileMode::kClamp)); |
Dominic Mazzoni | 394d414 | 2017-02-14 11:15:31 -0800 | [diff] [blame] | 101 | canvas->drawRect(bounds, paint); |
| 102 | |
| 103 | canvas->restore(); |
| 104 | } |
| 105 | |
| 106 | class HighContrastFilterGM : public skiagm::GM { |
| 107 | public: |
| 108 | HighContrastFilterGM() { |
| 109 | SkColor g1Colors[] = { kColor1, SkColorSetA(kColor1, 0x20) }; |
| 110 | SkColor g2Colors[] = { kColor2, SkColorSetA(kColor2, 0x20) }; |
| 111 | SkPoint g1Points[] = { { 0, 0 }, { 0, 100 } }; |
| 112 | SkPoint g2Points[] = { { 0, 0 }, { kSize, 0 } }; |
| 113 | SkScalar pos[] = { 0.2f, 1.0f }; |
| 114 | |
| 115 | SkHighContrastConfig fConfig; |
| 116 | fFilter = SkHighContrastFilter::Make(fConfig); |
| 117 | fGr1 = SkGradientShader::MakeLinear( |
| 118 | g1Points, g1Colors, pos, SK_ARRAY_COUNT(g1Colors), |
Mike Reed | fae8fce | 2019-04-03 10:27:45 -0400 | [diff] [blame] | 119 | SkTileMode::kClamp); |
Dominic Mazzoni | 394d414 | 2017-02-14 11:15:31 -0800 | [diff] [blame] | 120 | fGr2 = SkGradientShader::MakeLinear( |
| 121 | g2Points, g2Colors, pos, SK_ARRAY_COUNT(g2Colors), |
Mike Reed | fae8fce | 2019-04-03 10:27:45 -0400 | [diff] [blame] | 122 | SkTileMode::kClamp); |
Dominic Mazzoni | 394d414 | 2017-02-14 11:15:31 -0800 | [diff] [blame] | 123 | } |
| 124 | |
| 125 | protected: |
| 126 | |
| 127 | SkString onShortName() override { |
| 128 | return SkString("highcontrastfilter"); |
| 129 | } |
| 130 | |
| 131 | SkISize onISize() override { |
| 132 | return SkISize::Make(600, 420); |
| 133 | } |
| 134 | |
| 135 | void onDraw(SkCanvas* canvas) override { |
| 136 | SkHighContrastConfig configs[] = { |
| 137 | { false, InvertStyle::kNoInvert, 0.0f }, |
| 138 | { false, InvertStyle::kInvertBrightness, 0.0f }, |
| 139 | { false, InvertStyle::kInvertLightness, 0.0f }, |
| 140 | { false, InvertStyle::kInvertLightness, 0.2f }, |
| 141 | { true, InvertStyle::kNoInvert, 0.0f }, |
| 142 | { true, InvertStyle::kInvertBrightness, 0.0f }, |
| 143 | { true, InvertStyle::kInvertLightness, 0.0f }, |
| 144 | { true, InvertStyle::kInvertLightness, 0.2f }, |
| 145 | }; |
| 146 | |
| 147 | for (size_t i = 0; i < SK_ARRAY_COUNT(configs); ++i) { |
| 148 | SkScalar x = kSize * (i % 4); |
| 149 | SkScalar y = kSize * (i / 4); |
| 150 | canvas->save(); |
| 151 | canvas->translate(x, y); |
| 152 | canvas->scale(kSize, kSize); |
| 153 | draw_scene(canvas, configs[i]); |
| 154 | draw_label(canvas, configs[i]); |
| 155 | canvas->restore(); |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | private: |
| 160 | sk_sp<SkColorFilter> fFilter; |
| 161 | sk_sp<SkShader> fGr1, fGr2; |
| 162 | |
| 163 | typedef skiagm::GM INHERITED; |
| 164 | }; |
| 165 | |
| 166 | DEF_GM(return new HighContrastFilterGM;) |