EpsImageBackEnd.php
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ImageBackEndInterface.php
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TransformationMatrix.php
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EpsImageBackEnd.php
377 lines
| 1 | <?php |
| 2 | declare(strict_types = 1); |
| 3 | |
| 4 | namespace BaconQrCode\Renderer\Image; |
| 5 | |
| 6 | use BaconQrCode\Exception\RuntimeException; |
| 7 | use BaconQrCode\Renderer\Color\Alpha; |
| 8 | use BaconQrCode\Renderer\Color\Cmyk; |
| 9 | use BaconQrCode\Renderer\Color\ColorInterface; |
| 10 | use BaconQrCode\Renderer\Color\Gray; |
| 11 | use BaconQrCode\Renderer\Color\Rgb; |
| 12 | use BaconQrCode\Renderer\Path\Close; |
| 13 | use BaconQrCode\Renderer\Path\Curve; |
| 14 | use BaconQrCode\Renderer\Path\EllipticArc; |
| 15 | use BaconQrCode\Renderer\Path\Line; |
| 16 | use BaconQrCode\Renderer\Path\Move; |
| 17 | use BaconQrCode\Renderer\Path\Path; |
| 18 | use BaconQrCode\Renderer\RendererStyle\Gradient; |
| 19 | use BaconQrCode\Renderer\RendererStyle\GradientType; |
| 20 | |
| 21 | final class EpsImageBackEnd implements ImageBackEndInterface |
| 22 | { |
| 23 | private const PRECISION = 3; |
| 24 | |
| 25 | /** |
| 26 | * @var string|null |
| 27 | */ |
| 28 | private $eps; |
| 29 | |
| 30 | public function new(int $size, ColorInterface $backgroundColor) : void |
| 31 | { |
| 32 | $this->eps = "%!PS-Adobe-3.0 EPSF-3.0\n" |
| 33 | . "%%Creator: BaconQrCode\n" |
| 34 | . sprintf("%%%%BoundingBox: 0 0 %d %d \n", $size, $size) |
| 35 | . "%%BeginProlog\n" |
| 36 | . "save\n" |
| 37 | . "50 dict begin\n" |
| 38 | . "/q { gsave } bind def\n" |
| 39 | . "/Q { grestore } bind def\n" |
| 40 | . "/s { scale } bind def\n" |
| 41 | . "/t { translate } bind def\n" |
| 42 | . "/r { rotate } bind def\n" |
| 43 | . "/n { newpath } bind def\n" |
| 44 | . "/m { moveto } bind def\n" |
| 45 | . "/l { lineto } bind def\n" |
| 46 | . "/c { curveto } bind def\n" |
| 47 | . "/z { closepath } bind def\n" |
| 48 | . "/f { eofill } bind def\n" |
| 49 | . "/rgb { setrgbcolor } bind def\n" |
| 50 | . "/cmyk { setcmykcolor } bind def\n" |
| 51 | . "/gray { setgray } bind def\n" |
| 52 | . "%%EndProlog\n" |
| 53 | . "1 -1 s\n" |
| 54 | . sprintf("0 -%d t\n", $size); |
| 55 | |
| 56 | if ($backgroundColor instanceof Alpha && 0 === $backgroundColor->getAlpha()) { |
| 57 | return; |
| 58 | } |
| 59 | |
| 60 | $this->eps .= wordwrap( |
| 61 | '0 0 m' |
| 62 | . sprintf(' %s 0 l', (string) $size) |
| 63 | . sprintf(' %s %s l', (string) $size, (string) $size) |
| 64 | . sprintf(' 0 %s l', (string) $size) |
| 65 | . ' z' |
| 66 | . ' ' .$this->getColorSetString($backgroundColor) . " f\n", |
| 67 | 75, |
| 68 | "\n " |
| 69 | ); |
| 70 | } |
| 71 | |
| 72 | public function scale(float $size) : void |
| 73 | { |
| 74 | if (null === $this->eps) { |
| 75 | throw new RuntimeException('No image has been started'); |
| 76 | } |
| 77 | |
| 78 | $this->eps .= sprintf("%1\$s %1\$s s\n", round($size, self::PRECISION)); |
| 79 | } |
| 80 | |
| 81 | public function translate(float $x, float $y) : void |
| 82 | { |
| 83 | if (null === $this->eps) { |
| 84 | throw new RuntimeException('No image has been started'); |
| 85 | } |
| 86 | |
| 87 | $this->eps .= sprintf("%s %s t\n", round($x, self::PRECISION), round($y, self::PRECISION)); |
| 88 | } |
| 89 | |
| 90 | public function rotate(int $degrees) : void |
| 91 | { |
| 92 | if (null === $this->eps) { |
| 93 | throw new RuntimeException('No image has been started'); |
| 94 | } |
| 95 | |
| 96 | $this->eps .= sprintf("%d r\n", $degrees); |
| 97 | } |
| 98 | |
| 99 | public function push() : void |
| 100 | { |
| 101 | if (null === $this->eps) { |
| 102 | throw new RuntimeException('No image has been started'); |
| 103 | } |
| 104 | |
| 105 | $this->eps .= "q\n"; |
| 106 | } |
| 107 | |
| 108 | public function pop() : void |
| 109 | { |
| 110 | if (null === $this->eps) { |
| 111 | throw new RuntimeException('No image has been started'); |
| 112 | } |
| 113 | |
| 114 | $this->eps .= "Q\n"; |
| 115 | } |
| 116 | |
| 117 | public function drawPathWithColor(Path $path, ColorInterface $color) : void |
| 118 | { |
| 119 | if (null === $this->eps) { |
| 120 | throw new RuntimeException('No image has been started'); |
| 121 | } |
| 122 | |
| 123 | $fromX = 0; |
| 124 | $fromY = 0; |
| 125 | $this->eps .= wordwrap( |
| 126 | 'n ' |
| 127 | . $this->drawPathOperations($path, $fromX, $fromY) |
| 128 | . ' ' . $this->getColorSetString($color) . " f\n", |
| 129 | 75, |
| 130 | "\n " |
| 131 | ); |
| 132 | } |
| 133 | |
| 134 | public function drawPathWithGradient( |
| 135 | Path $path, |
| 136 | Gradient $gradient, |
| 137 | float $x, |
| 138 | float $y, |
| 139 | float $width, |
| 140 | float $height |
| 141 | ) : void { |
| 142 | if (null === $this->eps) { |
| 143 | throw new RuntimeException('No image has been started'); |
| 144 | } |
| 145 | |
| 146 | $fromX = 0; |
| 147 | $fromY = 0; |
| 148 | $this->eps .= wordwrap( |
| 149 | 'q n ' . $this->drawPathOperations($path, $fromX, $fromY) . "\n", |
| 150 | 75, |
| 151 | "\n " |
| 152 | ); |
| 153 | |
| 154 | $this->createGradientFill($gradient, $x, $y, $width, $height); |
| 155 | } |
| 156 | |
| 157 | public function done() : string |
| 158 | { |
| 159 | if (null === $this->eps) { |
| 160 | throw new RuntimeException('No image has been started'); |
| 161 | } |
| 162 | |
| 163 | $this->eps .= "%%TRAILER\nend restore\n%%EOF"; |
| 164 | $blob = $this->eps; |
| 165 | $this->eps = null; |
| 166 | |
| 167 | return $blob; |
| 168 | } |
| 169 | |
| 170 | private function drawPathOperations(Iterable $ops, &$fromX, &$fromY) : string |
| 171 | { |
| 172 | $pathData = []; |
| 173 | |
| 174 | foreach ($ops as $op) { |
| 175 | switch (true) { |
| 176 | case $op instanceof Move: |
| 177 | $fromX = $toX = round($op->getX(), self::PRECISION); |
| 178 | $fromY = $toY = round($op->getY(), self::PRECISION); |
| 179 | $pathData[] = sprintf('%s %s m', $toX, $toY); |
| 180 | break; |
| 181 | |
| 182 | case $op instanceof Line: |
| 183 | $fromX = $toX = round($op->getX(), self::PRECISION); |
| 184 | $fromY = $toY = round($op->getY(), self::PRECISION); |
| 185 | $pathData[] = sprintf('%s %s l', $toX, $toY); |
| 186 | break; |
| 187 | |
| 188 | case $op instanceof EllipticArc: |
| 189 | $pathData[] = $this->drawPathOperations($op->toCurves($fromX, $fromY), $fromX, $fromY); |
| 190 | break; |
| 191 | |
| 192 | case $op instanceof Curve: |
| 193 | $x1 = round($op->getX1(), self::PRECISION); |
| 194 | $y1 = round($op->getY1(), self::PRECISION); |
| 195 | $x2 = round($op->getX2(), self::PRECISION); |
| 196 | $y2 = round($op->getY2(), self::PRECISION); |
| 197 | $fromX = $x3 = round($op->getX3(), self::PRECISION); |
| 198 | $fromY = $y3 = round($op->getY3(), self::PRECISION); |
| 199 | $pathData[] = sprintf('%s %s %s %s %s %s c', $x1, $y1, $x2, $y2, $x3, $y3); |
| 200 | break; |
| 201 | |
| 202 | case $op instanceof Close: |
| 203 | $pathData[] = 'z'; |
| 204 | break; |
| 205 | |
| 206 | default: |
| 207 | throw new RuntimeException('Unexpected draw operation: ' . get_class($op)); |
| 208 | } |
| 209 | } |
| 210 | |
| 211 | return implode(' ', $pathData); |
| 212 | } |
| 213 | |
| 214 | private function createGradientFill(Gradient $gradient, float $x, float $y, float $width, float $height) : void |
| 215 | { |
| 216 | $startColor = $gradient->getStartColor(); |
| 217 | $endColor = $gradient->getEndColor(); |
| 218 | |
| 219 | if ($startColor instanceof Alpha) { |
| 220 | $startColor = $startColor->getBaseColor(); |
| 221 | } |
| 222 | |
| 223 | $startColorType = get_class($startColor); |
| 224 | |
| 225 | if (! in_array($startColorType, [Rgb::class, Cmyk::class, Gray::class])) { |
| 226 | $startColorType = Cmyk::class; |
| 227 | $startColor = $startColor->toCmyk(); |
| 228 | } |
| 229 | |
| 230 | if (get_class($endColor) !== $startColorType) { |
| 231 | switch ($startColorType) { |
| 232 | case Cmyk::class: |
| 233 | $endColor = $endColor->toCmyk(); |
| 234 | break; |
| 235 | |
| 236 | case Rgb::class: |
| 237 | $endColor = $endColor->toRgb(); |
| 238 | break; |
| 239 | |
| 240 | case Gray::class: |
| 241 | $endColor = $endColor->toGray(); |
| 242 | break; |
| 243 | } |
| 244 | } |
| 245 | |
| 246 | $this->eps .= "eoclip\n<<\n"; |
| 247 | |
| 248 | if ($gradient->getType() === GradientType::RADIAL()) { |
| 249 | $this->eps .= " /ShadingType 3\n"; |
| 250 | } else { |
| 251 | $this->eps .= " /ShadingType 2\n"; |
| 252 | } |
| 253 | |
| 254 | $this->eps .= " /Extend [ true true ]\n" |
| 255 | . " /AntiAlias true\n"; |
| 256 | |
| 257 | switch ($startColorType) { |
| 258 | case Cmyk::class: |
| 259 | $this->eps .= " /ColorSpace /DeviceCMYK\n"; |
| 260 | break; |
| 261 | |
| 262 | case Rgb::class: |
| 263 | $this->eps .= " /ColorSpace /DeviceRGB\n"; |
| 264 | break; |
| 265 | |
| 266 | case Gray::class: |
| 267 | $this->eps .= " /ColorSpace /DeviceGray\n"; |
| 268 | break; |
| 269 | } |
| 270 | |
| 271 | switch ($gradient->getType()) { |
| 272 | case GradientType::HORIZONTAL(): |
| 273 | $this->eps .= sprintf( |
| 274 | " /Coords [ %s %s %s %s ]\n", |
| 275 | round($x, self::PRECISION), |
| 276 | round($y, self::PRECISION), |
| 277 | round($x + $width, self::PRECISION), |
| 278 | round($y, self::PRECISION) |
| 279 | ); |
| 280 | break; |
| 281 | |
| 282 | case GradientType::VERTICAL(): |
| 283 | $this->eps .= sprintf( |
| 284 | " /Coords [ %s %s %s %s ]\n", |
| 285 | round($x, self::PRECISION), |
| 286 | round($y, self::PRECISION), |
| 287 | round($x, self::PRECISION), |
| 288 | round($y + $height, self::PRECISION) |
| 289 | ); |
| 290 | break; |
| 291 | |
| 292 | case GradientType::DIAGONAL(): |
| 293 | $this->eps .= sprintf( |
| 294 | " /Coords [ %s %s %s %s ]\n", |
| 295 | round($x, self::PRECISION), |
| 296 | round($y, self::PRECISION), |
| 297 | round($x + $width, self::PRECISION), |
| 298 | round($y + $height, self::PRECISION) |
| 299 | ); |
| 300 | break; |
| 301 | |
| 302 | case GradientType::INVERSE_DIAGONAL(): |
| 303 | $this->eps .= sprintf( |
| 304 | " /Coords [ %s %s %s %s ]\n", |
| 305 | round($x, self::PRECISION), |
| 306 | round($y + $height, self::PRECISION), |
| 307 | round($x + $width, self::PRECISION), |
| 308 | round($y, self::PRECISION) |
| 309 | ); |
| 310 | break; |
| 311 | |
| 312 | case GradientType::RADIAL(): |
| 313 | $centerX = ($x + $width) / 2; |
| 314 | $centerY = ($y + $height) / 2; |
| 315 | |
| 316 | $this->eps .= sprintf( |
| 317 | " /Coords [ %s %s 0 %s %s %s ]\n", |
| 318 | round($centerX, self::PRECISION), |
| 319 | round($centerY, self::PRECISION), |
| 320 | round($centerX, self::PRECISION), |
| 321 | round($centerY, self::PRECISION), |
| 322 | round(max($width, $height) / 2, self::PRECISION) |
| 323 | ); |
| 324 | break; |
| 325 | } |
| 326 | |
| 327 | $this->eps .= " /Function\n" |
| 328 | . " <<\n" |
| 329 | . " /FunctionType 2\n" |
| 330 | . " /Domain [ 0 1 ]\n" |
| 331 | . sprintf(" /C0 [ %s ]\n", $this->getColorString($startColor)) |
| 332 | . sprintf(" /C1 [ %s ]\n", $this->getColorString($endColor)) |
| 333 | . " /N 1\n" |
| 334 | . " >>\n>>\nshfill\nQ\n"; |
| 335 | } |
| 336 | |
| 337 | private function getColorSetString(ColorInterface $color) : string |
| 338 | { |
| 339 | if ($color instanceof Rgb) { |
| 340 | return $this->getColorString($color) . ' rgb'; |
| 341 | } |
| 342 | |
| 343 | if ($color instanceof Cmyk) { |
| 344 | return $this->getColorString($color) . ' cmyk'; |
| 345 | } |
| 346 | |
| 347 | if ($color instanceof Gray) { |
| 348 | return $this->getColorString($color) . ' gray'; |
| 349 | } |
| 350 | |
| 351 | return $this->getColorSetString($color->toCmyk()); |
| 352 | } |
| 353 | |
| 354 | private function getColorString(ColorInterface $color) : string |
| 355 | { |
| 356 | if ($color instanceof Rgb) { |
| 357 | return sprintf('%s %s %s', $color->getRed() / 255, $color->getGreen() / 255, $color->getBlue() / 255); |
| 358 | } |
| 359 | |
| 360 | if ($color instanceof Cmyk) { |
| 361 | return sprintf( |
| 362 | '%s %s %s %s', |
| 363 | $color->getCyan() / 100, |
| 364 | $color->getMagenta() / 100, |
| 365 | $color->getYellow() / 100, |
| 366 | $color->getBlack() / 100 |
| 367 | ); |
| 368 | } |
| 369 | |
| 370 | if ($color instanceof Gray) { |
| 371 | return sprintf('%s', $color->getGray() / 100); |
| 372 | } |
| 373 | |
| 374 | return $this->getColorString($color->toCmyk()); |
| 375 | } |
| 376 | } |
| 377 |