commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2013 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 "SkGradientShader.h" |
| 11 | #include "SkLumaColorFilter.h" |
| 12 | |
| 13 | static SkScalar kSize = 80; |
| 14 | static SkScalar kInset = 10; |
| 15 | static SkColor kColor1 = SkColorSetARGB(0xff, 0xff, 0xff, 0); |
caryclark | 97a26d0 | 2015-07-17 13:20:48 -0700 | [diff] [blame] | 16 | static SkColor kColor2 = SkColorSetARGB(0xff, 0x82, 0xff, 0); |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 17 | |
| 18 | static void draw_label(SkCanvas* canvas, const char* label, |
| 19 | const SkPoint& offset) { |
| 20 | SkPaint paint; |
caryclark | 1818acb | 2015-07-24 12:09:25 -0700 | [diff] [blame] | 21 | sk_tool_utils::set_portable_typeface(&paint); |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 22 | size_t len = strlen(label); |
| 23 | |
| 24 | SkScalar width = paint.measureText(label, len); |
| 25 | canvas->drawText(label, len, offset.x() - width / 2, offset.y(), |
| 26 | paint); |
| 27 | } |
| 28 | |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 29 | static void draw_scene(SkCanvas* canvas, const sk_sp<SkColorFilter>& filter, SkXfermode::Mode mode, |
reed | 1a9b964 | 2016-03-13 14:13:58 -0700 | [diff] [blame] | 30 | const sk_sp<SkShader>& s1, const sk_sp<SkShader>& s2) { |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 31 | SkPaint paint; |
| 32 | paint.setAntiAlias(true); |
| 33 | SkRect r, c, bounds = SkRect::MakeWH(kSize, kSize); |
| 34 | |
| 35 | c = bounds; |
| 36 | c.fRight = bounds.centerX(); |
commit-bot@chromium.org | d494b09 | 2013-10-10 20:13:51 +0000 | [diff] [blame] | 37 | paint.setARGB(0x20, 0, 0, 0xff); |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 38 | canvas->drawRect(bounds, paint); |
| 39 | |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 40 | canvas->saveLayer(&bounds, nullptr); |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 41 | |
| 42 | r = bounds; |
| 43 | r.inset(kInset, 0); |
| 44 | paint.setShader(s1); |
| 45 | paint.setColor(s1 ? SK_ColorBLACK : SkColorSetA(kColor1, 0x80)); |
| 46 | canvas->drawOval(r, paint); |
| 47 | if (!s1) { |
| 48 | canvas->save(); |
| 49 | canvas->clipRect(c); |
| 50 | paint.setColor(kColor1); |
| 51 | canvas->drawOval(r, paint); |
| 52 | canvas->restore(); |
| 53 | } |
| 54 | |
| 55 | SkPaint xferPaint; |
| 56 | xferPaint.setXfermodeMode(mode); |
| 57 | canvas->saveLayer(&bounds, &xferPaint); |
| 58 | |
| 59 | r = bounds; |
| 60 | r.inset(0, kInset); |
| 61 | paint.setShader(s2); |
| 62 | paint.setColor(s2 ? SK_ColorBLACK : SkColorSetA(kColor2, 0x80)); |
| 63 | paint.setColorFilter(filter); |
| 64 | canvas->drawOval(r, paint); |
| 65 | if (!s2) { |
| 66 | canvas->save(); |
| 67 | canvas->clipRect(c); |
| 68 | paint.setColor(kColor2); |
| 69 | canvas->drawOval(r, paint); |
| 70 | canvas->restore(); |
| 71 | } |
| 72 | |
| 73 | canvas->restore(); |
| 74 | canvas->restore(); |
| 75 | } |
| 76 | |
| 77 | class LumaFilterGM : public skiagm::GM { |
| 78 | public: |
| 79 | LumaFilterGM() { |
| 80 | SkColor g1Colors[] = { kColor1, SkColorSetA(kColor1, 0x20) }; |
| 81 | SkColor g2Colors[] = { kColor2, SkColorSetA(kColor2, 0x20) }; |
| 82 | SkPoint g1Points[] = { { 0, 0 }, { 0, 100 } }; |
| 83 | SkPoint g2Points[] = { { 0, 0 }, { kSize, 0 } }; |
| 84 | SkScalar pos[] = { 0.2f, 1.0f }; |
| 85 | |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 86 | fFilter = SkLumaColorFilter::Make(); |
reed | 1a9b964 | 2016-03-13 14:13:58 -0700 | [diff] [blame] | 87 | fGr1 = SkGradientShader::MakeLinear(g1Points, g1Colors, pos, SK_ARRAY_COUNT(g1Colors), |
| 88 | SkShader::kClamp_TileMode); |
| 89 | fGr2 = SkGradientShader::MakeLinear(g2Points, g2Colors, pos, SK_ARRAY_COUNT(g2Colors), |
| 90 | SkShader::kClamp_TileMode); |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 91 | } |
| 92 | |
| 93 | protected: |
commit-bot@chromium.org | a90c680 | 2014-04-30 13:20:45 +0000 | [diff] [blame] | 94 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 95 | SkString onShortName() override { |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 96 | return SkString("lumafilter"); |
| 97 | } |
| 98 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 99 | SkISize onISize() override { |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 100 | return SkISize::Make(600, 420); |
| 101 | } |
| 102 | |
mtklein | 36352bf | 2015-03-25 18:17:31 -0700 | [diff] [blame] | 103 | void onDraw(SkCanvas* canvas) override { |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 104 | SkXfermode::Mode modes[] = { SkXfermode::kSrcOver_Mode, |
| 105 | SkXfermode::kDstOver_Mode, |
| 106 | SkXfermode::kSrcATop_Mode, |
| 107 | SkXfermode::kDstATop_Mode, |
| 108 | SkXfermode::kSrcIn_Mode, |
| 109 | SkXfermode::kDstIn_Mode, |
| 110 | }; |
| 111 | struct { |
reed | 1a9b964 | 2016-03-13 14:13:58 -0700 | [diff] [blame] | 112 | const sk_sp<SkShader>& fShader1; |
| 113 | const sk_sp<SkShader>& fShader2; |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 114 | } shaders[] = { |
halcanary | 96fcdcc | 2015-08-27 07:41:13 -0700 | [diff] [blame] | 115 | { nullptr, nullptr }, |
| 116 | { nullptr, fGr2 }, |
| 117 | { fGr1, nullptr }, |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 118 | { fGr1, fGr2 }, |
| 119 | }; |
| 120 | |
| 121 | SkScalar gridStep = kSize + 2 * kInset; |
| 122 | for (size_t i = 0; i < SK_ARRAY_COUNT(modes); ++i) { |
| 123 | draw_label(canvas, SkXfermode::ModeName(modes[i]), |
| 124 | SkPoint::Make(gridStep * (0.5f + i), 20)); |
| 125 | } |
| 126 | |
| 127 | for (size_t i = 0; i < SK_ARRAY_COUNT(shaders); ++i) { |
| 128 | canvas->save(); |
| 129 | canvas->translate(kInset, gridStep * i + 30); |
| 130 | for (size_t m = 0; m < SK_ARRAY_COUNT(modes); ++m) { |
| 131 | draw_scene(canvas, fFilter, modes[m], shaders[i].fShader1, |
| 132 | shaders[i].fShader2); |
| 133 | canvas->translate(gridStep, 0); |
| 134 | } |
| 135 | canvas->restore(); |
| 136 | } |
| 137 | } |
| 138 | |
| 139 | private: |
reed | d053ce9 | 2016-03-22 10:17:23 -0700 | [diff] [blame] | 140 | sk_sp<SkColorFilter> fFilter; |
| 141 | sk_sp<SkShader> fGr1, fGr2; |
commit-bot@chromium.org | 6c1ee2d | 2013-10-07 18:00:17 +0000 | [diff] [blame] | 142 | |
| 143 | typedef skiagm::GM INHERITED; |
| 144 | }; |
| 145 | |
| 146 | ////////////////////////////////////////////////////////////////////////////// |
| 147 | |
halcanary | 385fe4d | 2015-08-26 13:07:48 -0700 | [diff] [blame] | 148 | DEF_GM(return new LumaFilterGM;) |