senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2011 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 "SkColorMatrixFilter.h" |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 10 | #include "SkGradientShader.h" |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 11 | |
| 12 | #define WIDTH 500 |
| 13 | #define HEIGHT 500 |
| 14 | |
reed@google.com | 9afc656 | 2012-03-22 14:09:28 +0000 | [diff] [blame] | 15 | class SkOnce { |
| 16 | public: |
| 17 | SkOnce() : fOnce(false) {}; |
| 18 | |
| 19 | bool once() const { |
| 20 | if (fOnce) { |
| 21 | return false; |
| 22 | } |
| 23 | fOnce = true; |
| 24 | return true; |
| 25 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 26 | |
reed@google.com | 9afc656 | 2012-03-22 14:09:28 +0000 | [diff] [blame] | 27 | private: |
| 28 | mutable bool fOnce; |
| 29 | }; |
| 30 | |
reed@google.com | 7b6c193 | 2012-06-04 19:07:41 +0000 | [diff] [blame] | 31 | static void setColorMatrix(SkPaint* paint, const SkColorMatrix& matrix) { |
| 32 | paint->setColorFilter(SkNEW_ARGS(SkColorMatrixFilter, (matrix)))->unref(); |
| 33 | } |
| 34 | |
| 35 | static void setArray(SkPaint* paint, const SkScalar array[]) { |
| 36 | paint->setColorFilter(SkNEW_ARGS(SkColorMatrixFilter, (array)))->unref(); |
| 37 | } |
| 38 | |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 39 | namespace skiagm { |
| 40 | |
| 41 | class ColorMatrixGM : public GM { |
reed@google.com | 9afc656 | 2012-03-22 14:09:28 +0000 | [diff] [blame] | 42 | SkOnce fOnce; |
| 43 | void init() { |
| 44 | if (fOnce.once()) { |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 45 | fSolidBitmap = this->createSolidBitmap(64, 64); |
| 46 | fTransparentBitmap = this->createTransparentBitmap(64, 64); |
reed@google.com | 9afc656 | 2012-03-22 14:09:28 +0000 | [diff] [blame] | 47 | } |
| 48 | } |
| 49 | |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 50 | public: |
| 51 | ColorMatrixGM() { |
| 52 | this->setBGColor(0xFF808080); |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 53 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 54 | |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 55 | protected: |
| 56 | virtual SkString onShortName() { |
| 57 | return SkString("colormatrix"); |
| 58 | } |
| 59 | |
| 60 | virtual SkISize onISize() { |
| 61 | return make_isize(WIDTH, HEIGHT); |
| 62 | } |
| 63 | |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 64 | SkBitmap createSolidBitmap(int width, int height) { |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 65 | SkBitmap bm; |
| 66 | bm.setConfig(SkBitmap::kARGB_8888_Config, width, height); |
| 67 | bm.allocPixels(); |
| 68 | SkCanvas canvas(bm); |
senorblanco@chromium.org | 50bdad8 | 2012-01-03 20:51:57 +0000 | [diff] [blame] | 69 | canvas.clear(0x0); |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 70 | for (int y = 0; y < height; ++y) { |
| 71 | for (int x = 0; x < width; ++x) { |
| 72 | SkPaint paint; |
| 73 | paint.setColor(SkColorSetARGB(255, x * 255 / width, y * 255 / height, 0)); |
tomhudson@google.com | 7558925 | 2012-04-10 17:42:21 +0000 | [diff] [blame] | 74 | canvas.drawRect(SkRect::MakeXYWH(SkIntToScalar(x), |
| 75 | SkIntToScalar(y), SK_Scalar1, SK_Scalar1), paint); |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 76 | } |
| 77 | } |
| 78 | return bm; |
| 79 | } |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 80 | |
| 81 | // creates a bitmap with shades of transparent gray. |
| 82 | SkBitmap createTransparentBitmap(int width, int height) { |
| 83 | SkBitmap bm; |
| 84 | bm.setConfig(SkBitmap::kARGB_8888_Config, width, height); |
| 85 | bm.allocPixels(); |
| 86 | SkCanvas canvas(bm); |
| 87 | canvas.clear(0x0); |
| 88 | |
| 89 | SkPoint pts[] = {{0, 0}, {SkIntToScalar(width), SkIntToScalar(height)}}; |
| 90 | SkColor colors[] = {0x00000000, 0xFFFFFFFF}; |
| 91 | SkPaint paint; |
| 92 | paint.setShader(SkGradientShader::CreateLinear(pts, colors, NULL, 2, |
| 93 | SkShader::kClamp_TileMode))->unref(); |
| 94 | canvas.drawRect(SkRect::MakeWH(SkIntToScalar(width), SkIntToScalar(height)), paint); |
| 95 | return bm; |
| 96 | } |
| 97 | |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 98 | virtual void onDraw(SkCanvas* canvas) { |
reed@google.com | 9afc656 | 2012-03-22 14:09:28 +0000 | [diff] [blame] | 99 | this->init(); |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 100 | |
| 101 | SkPaint paint; |
| 102 | SkColorMatrix matrix; |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 103 | |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 104 | paint.setXfermodeMode(SkXfermode::kSrc_Mode); |
| 105 | const SkBitmap bmps[] = { fSolidBitmap, fTransparentBitmap }; |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 106 | |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 107 | for (size_t i = 0; i < SK_ARRAY_COUNT(bmps); ++i) { |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 108 | |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 109 | matrix.setIdentity(); |
| 110 | setColorMatrix(&paint, matrix); |
| 111 | canvas->drawBitmap(bmps[i], 0, 0, &paint); |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 112 | |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 113 | matrix.setRotate(SkColorMatrix::kR_Axis, 90); |
| 114 | setColorMatrix(&paint, matrix); |
| 115 | canvas->drawBitmap(bmps[i], 80, 0, &paint); |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 116 | |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 117 | matrix.setRotate(SkColorMatrix::kG_Axis, 90); |
| 118 | setColorMatrix(&paint, matrix); |
| 119 | canvas->drawBitmap(bmps[i], 160, 0, &paint); |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 120 | |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 121 | matrix.setRotate(SkColorMatrix::kB_Axis, 90); |
| 122 | setColorMatrix(&paint, matrix); |
| 123 | canvas->drawBitmap(bmps[i], 240, 0, &paint); |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 124 | |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 125 | matrix.setSaturation(SkFloatToScalar(0.0f)); |
| 126 | setColorMatrix(&paint, matrix); |
| 127 | canvas->drawBitmap(bmps[i], 0, 80, &paint); |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 128 | |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 129 | matrix.setSaturation(SkFloatToScalar(0.5f)); |
| 130 | setColorMatrix(&paint, matrix); |
| 131 | canvas->drawBitmap(bmps[i], 80, 80, &paint); |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 132 | |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 133 | matrix.setSaturation(SkFloatToScalar(1.0f)); |
| 134 | setColorMatrix(&paint, matrix); |
| 135 | canvas->drawBitmap(bmps[i], 160, 80, &paint); |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 136 | |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 137 | matrix.setSaturation(SkFloatToScalar(2.0f)); |
| 138 | setColorMatrix(&paint, matrix); |
| 139 | canvas->drawBitmap(bmps[i], 240, 80, &paint); |
senorblanco@chromium.org | b3a39b5 | 2012-01-05 18:28:56 +0000 | [diff] [blame] | 140 | |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 141 | matrix.setRGB2YUV(); |
| 142 | setColorMatrix(&paint, matrix); |
| 143 | canvas->drawBitmap(bmps[i], 0, 160, &paint); |
senorblanco@chromium.org | b3a39b5 | 2012-01-05 18:28:56 +0000 | [diff] [blame] | 144 | |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 145 | matrix.setYUV2RGB(); |
| 146 | setColorMatrix(&paint, matrix); |
| 147 | canvas->drawBitmap(bmps[i], 80, 160, &paint); |
| 148 | |
| 149 | SkScalar s1 = SK_Scalar1; |
| 150 | SkScalar s255 = SkIntToScalar(255); |
| 151 | // Move red into alpha, set color to white |
| 152 | SkScalar data[20] = { |
| 153 | 0, 0, 0, 0, s255, |
| 154 | 0, 0, 0, 0, s255, |
| 155 | 0, 0, 0, 0, s255, |
| 156 | s1, 0, 0, 0, 0, |
| 157 | }; |
| 158 | |
| 159 | setArray(&paint, data); |
| 160 | canvas->drawBitmap(bmps[i], 160, 160, &paint); |
| 161 | |
| 162 | canvas->translate(0, 240); |
| 163 | } |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 164 | } |
rmistry@google.com | d6176b0 | 2012-08-23 18:14:13 +0000 | [diff] [blame] | 165 | |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 166 | private: |
bsalomon@google.com | 1282009 | 2012-10-16 17:50:48 +0000 | [diff] [blame] | 167 | SkBitmap fSolidBitmap; |
| 168 | SkBitmap fTransparentBitmap; |
senorblanco@chromium.org | e5ff3ce | 2011-12-20 20:58:18 +0000 | [diff] [blame] | 169 | typedef GM INHERITED; |
| 170 | }; |
| 171 | |
| 172 | ////////////////////////////////////////////////////////////////////////////// |
| 173 | |
| 174 | static GM* MyFactory(void*) { return new ColorMatrixGM; } |
| 175 | static GMRegistry reg(MyFactory); |
| 176 | |
| 177 | } |