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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\Pdf\Core\Content; |
| 6 | |
| 7 | use Phpdftk\Color\CmykColor; |
| 8 | use Phpdftk\Color\GrayColor; |
| 9 | use Phpdftk\Color\RgbColor; |
| 10 | use Phpdftk\Encoding\TextEncoder; |
| 11 | use Phpdftk\Pdf\Core\Font\RegisteredFont; |
| 12 | use Phpdftk\Pdf\Core\PdfDictionary; |
| 13 | use Phpdftk\Pdf\Core\PdfStream; |
| 14 | use Phpdftk\Geometry\Matrix; |
| 15 | use Phpdftk\Geometry\Rectangle; |
| 16 | |
| 17 | /** |
| 18 | * Content stream for page graphics and text. |
| 19 | * |
| 20 | * Provides a fluent API covering all PDF content stream operators |
| 21 | * as defined in the PDF 1.7 specification (ISO 32000-1). |
| 22 | */ |
| 23 | class ContentStream extends PdfStream |
| 24 | { |
| 25 | /** @var array<int, string> */ |
| 26 | private array $operators = []; |
| 27 | |
| 28 | /** |
| 29 | * Encoder for the currently-active single-byte font. When set, showText |
| 30 | * and showTextArray convert their UTF-8 input to the font's byte |
| 31 | * encoding before emitting Tj/TJ. Null when no font has been set, or |
| 32 | * when the active font is a composite/CID font (those use the |
| 33 | * showTextHex / showUnicodeText path). |
| 34 | */ |
| 35 | private ?TextEncoder $activeEncoder = null; |
| 36 | |
| 37 | public function __construct() |
| 38 | { |
| 39 | parent::__construct(new PdfDictionary(), ''); |
| 40 | } |
| 41 | |
| 42 | /** @return array<int, string> */ |
| 43 | public function getOperators(): array |
| 44 | { |
| 45 | return $this->operators; |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * Clear the operators array. After this, toPdf() will use |
| 50 | * $this->data directly instead of regenerating from operators. |
| 51 | */ |
| 52 | public function clearOperators(): void |
| 53 | { |
| 54 | $this->operators = []; |
| 55 | } |
| 56 | |
| 57 | // ----------------------------------------------------------------------- |
| 58 | // Text state operators |
| 59 | // ----------------------------------------------------------------------- |
| 60 | |
| 61 | /** BT - Begin text object */ |
| 62 | public function beginText(): self |
| 63 | { |
| 64 | $this->operators[] = 'BT'; |
| 65 | return $this; |
| 66 | } |
| 67 | |
| 68 | /** ET - End text object */ |
| 69 | public function endText(): self |
| 70 | { |
| 71 | $this->operators[] = 'ET'; |
| 72 | return $this; |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Tf - Set font and size. |
| 77 | * |
| 78 | * Accepts either a resource name string (legacy / raw-bytes mode — the |
| 79 | * caller is responsible for emitting bytes in the font's encoding) or |
| 80 | * a `RegisteredFont` handle from `PdfWriter::addFont()`. When a handle |
| 81 | * is passed, the stream remembers the font's text encoder so subsequent |
| 82 | * showText/showTextArray calls accept UTF-8 directly. |
| 83 | */ |
| 84 | public function setFont(RegisteredFont|string $name, float $size): self |
| 85 | { |
| 86 | if ($name instanceof RegisteredFont) { |
| 87 | $this->activeEncoder = $name->getTextEncoder(); |
| 88 | $name = $name->getResourceName(); |
| 89 | } else { |
| 90 | $this->activeEncoder = null; |
| 91 | } |
| 92 | $this->operators[] = sprintf('/%s %s Tf', $name, $this->num($size)); |
| 93 | return $this; |
| 94 | } |
| 95 | |
| 96 | /** Td - Move text position */ |
| 97 | public function moveTextPosition(float $x, float $y): self |
| 98 | { |
| 99 | $this->operators[] = sprintf('%s %s Td', $this->num($x), $this->num($y)); |
| 100 | return $this; |
| 101 | } |
| 102 | |
| 103 | /** TD - Move text position and set leading */ |
| 104 | public function moveTextPositionNewLine(float $tx, float $ty): self |
| 105 | { |
| 106 | $this->operators[] = sprintf('%s %s TD', $this->num($tx), $this->num($ty)); |
| 107 | return $this; |
| 108 | } |
| 109 | |
| 110 | /** Tj - Show text */ |
| 111 | public function showText(string $text): self |
| 112 | { |
| 113 | $this->operators[] = $this->escapeString($this->encodeForActiveFont($text)) . ' Tj'; |
| 114 | return $this; |
| 115 | } |
| 116 | |
| 117 | /** TJ - Show text with individual character positioning |
| 118 | * @param array<int, string|int|float> $texts |
| 119 | */ |
| 120 | public function showTextArray(array $texts): self |
| 121 | { |
| 122 | $parts = []; |
| 123 | foreach ($texts as $item) { |
| 124 | if (is_string($item)) { |
| 125 | $parts[] = $this->escapeString($this->encodeForActiveFont($item)); |
| 126 | } elseif (is_int($item) || is_float($item)) { |
| 127 | $parts[] = $this->num($item); |
| 128 | } |
| 129 | } |
| 130 | $this->operators[] = '[ ' . implode(' ', $parts) . ' ] TJ'; |
| 131 | return $this; |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Run text through the active font's encoder if one was set via |
| 136 | * setFont(RegisteredFont). Otherwise return it verbatim so callers |
| 137 | * that pre-encoded their bytes continue to work. |
| 138 | */ |
| 139 | private function encodeForActiveFont(string $text): string |
| 140 | { |
| 141 | return $this->activeEncoder?->encode($text) ?? $text; |
| 142 | } |
| 143 | |
| 144 | /** Tj with hex-encoded string - Show text using hex-encoded glyph IDs (for CID fonts) */ |
| 145 | public function showTextHex(string $hexEncodedGids): self |
| 146 | { |
| 147 | $this->operators[] = '<' . $hexEncodedGids . '> Tj'; |
| 148 | return $this; |
| 149 | } |
| 150 | |
| 151 | /** |
| 152 | * TJ with a hex/kern array — emits `[ <hex> kern <hex> kern ... ] TJ` |
| 153 | * for a CID font where shaped glyphs need per-glyph kern adjustments |
| 154 | * (positive kern moves the text position backward in 1/1000 em units, |
| 155 | * negative kern moves forward). Each `$items` entry is either a hex |
| 156 | * GID string (without `< >` delimiters) or a numeric kern in |
| 157 | * 1/1000-em units. |
| 158 | * |
| 159 | * @param array<int, string|int|float> $items |
| 160 | */ |
| 161 | public function showTextArrayHex(array $items): self |
| 162 | { |
| 163 | if ($items === []) { |
| 164 | return $this; |
| 165 | } |
| 166 | $parts = []; |
| 167 | foreach ($items as $item) { |
| 168 | if (is_string($item)) { |
| 169 | if ($item === '') { |
| 170 | continue; |
| 171 | } |
| 172 | $parts[] = '<' . $item . '>'; |
| 173 | } else { |
| 174 | $parts[] = $this->num($item); |
| 175 | } |
| 176 | } |
| 177 | $this->operators[] = '[ ' . implode(' ', $parts) . ' ] TJ'; |
| 178 | return $this; |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * Show Unicode text using a CID font's GID mapping. |
| 183 | * |
| 184 | * Converts UTF-8 text to hex-encoded 2-byte GID sequences and |
| 185 | * emits a Tj operator. Requires a unicode-to-GID map (typically |
| 186 | * from TrueTypeData::$fullUnicodeToGid or OpenTypeData::$fullUnicodeToGid). |
| 187 | * |
| 188 | * @param string $text UTF-8 text |
| 189 | * @param array<int, int> $unicodeToGid Unicode codepoint → GID mapping |
| 190 | */ |
| 191 | public function showUnicodeText(string $text, array $unicodeToGid): self |
| 192 | { |
| 193 | $hex = ''; |
| 194 | foreach (mb_str_split($text) as $char) { |
| 195 | $cp = mb_ord($char); |
| 196 | $gid = $unicodeToGid[$cp] ?? 0; |
| 197 | $hex .= sprintf('%04X', $gid); |
| 198 | } |
| 199 | $this->operators[] = '<' . $hex . '> Tj'; |
| 200 | return $this; |
| 201 | } |
| 202 | |
| 203 | /** |
| 204 | * Emit a TJ array with kerning adjustments from GPOS data. |
| 205 | * |
| 206 | * Positive kern values in font units are negated per PDF convention |
| 207 | * (negative TJ displacements move the cursor right). Falls back to |
| 208 | * plain Tj when no kerning pairs apply. |
| 209 | * |
| 210 | * @param string $text UTF-8 text |
| 211 | * @param array<int, int> $unicodeToGid Unicode codepoint => GID mapping |
| 212 | * @param array<int, array<int, int>> $kernPairs leftGid => [rightGid => xAdvanceAdjust (design units)] |
| 213 | * @param int $unitsPerEm Font design units per em |
| 214 | */ |
| 215 | public function showUnicodeTextKerned( |
| 216 | string $text, |
| 217 | array $unicodeToGid, |
| 218 | array $kernPairs, |
| 219 | int $unitsPerEm, |
| 220 | ): self { |
| 221 | $chars = mb_str_split($text); |
| 222 | if ($chars === []) { |
| 223 | return $this; |
| 224 | } |
| 225 | |
| 226 | // Build array of GIDs |
| 227 | $gids = []; |
| 228 | foreach ($chars as $char) { |
| 229 | $cp = mb_ord($char); |
| 230 | $gids[] = $unicodeToGid[$cp] ?? 0; |
| 231 | } |
| 232 | |
| 233 | // Build TJ array: interleave hex strings with kern adjustments |
| 234 | // TJ numeric values are in thousandths of a unit of text space. |
| 235 | // Positive = move left (loosen), negative = move right (tighten). |
| 236 | // Font kern values: negative = tighten. TJ wants the opposite sign |
| 237 | // for tightening, BUT in PDF spec the TJ displacement subtracts the |
| 238 | // value from the current point. So a positive TJ value moves LEFT |
| 239 | // (tightens). Font kern is negative for tightening, so we negate. |
| 240 | $tjParts = []; |
| 241 | $currentHex = sprintf('%04X', $gids[0]); |
| 242 | |
| 243 | for ($i = 1, $count = count($gids); $i < $count; $i++) { |
| 244 | $prevGid = $gids[$i - 1]; |
| 245 | $curGid = $gids[$i]; |
| 246 | $kern = $kernPairs[$prevGid][$curGid] ?? 0; |
| 247 | |
| 248 | if ($kern !== 0) { |
| 249 | $tjParts[] = '<' . $currentHex . '>'; |
| 250 | // Scale from design units to 1/1000 em and negate |
| 251 | // (font kern negative=tighten, TJ positive=tighten) |
| 252 | $tjParts[] = (string) (int) round(-$kern * 1000 / $unitsPerEm); |
| 253 | $currentHex = sprintf('%04X', $curGid); |
| 254 | } else { |
| 255 | $currentHex .= sprintf('%04X', $curGid); |
| 256 | } |
| 257 | } |
| 258 | $tjParts[] = '<' . $currentHex . '>'; |
| 259 | |
| 260 | if (count($tjParts) === 1) { |
| 261 | $this->operators[] = $tjParts[0] . ' Tj'; |
| 262 | } else { |
| 263 | $this->operators[] = '[ ' . implode(' ', $tjParts) . ' ] TJ'; |
| 264 | } |
| 265 | |
| 266 | return $this; |
| 267 | } |
| 268 | |
| 269 | /** |
| 270 | * Apply OpenType GSUB ligature substitutions before kerning. |
| 271 | * |
| 272 | * Ligatures reduce the glyph count (e.g., "fi" -> single glyph), |
| 273 | * so the GID sequence may be shorter than the input. If kern pairs |
| 274 | * are provided, kerning adjustments are applied between the shaped |
| 275 | * glyphs using TJ; otherwise a plain Tj is emitted. |
| 276 | * |
| 277 | * @param string $text UTF-8 text to render |
| 278 | * @param array<int, int> $unicodeToGid Unicode codepoint → GID map |
| 279 | * @param array<int, list<array{components: int[], ligature: int}>> $ligatures GSUB ligature rules |
| 280 | * @param array<int, array<int, int>> $kernPairs Kern pairs (optional) |
| 281 | * @param int $unitsPerEm Font design units per em |
| 282 | */ |
| 283 | public function showUnicodeTextShaped( |
| 284 | string $text, |
| 285 | array $unicodeToGid, |
| 286 | array $ligatures, |
| 287 | array $kernPairs = [], |
| 288 | int $unitsPerEm = 1000, |
| 289 | ): self { |
| 290 | $chars = mb_str_split($text); |
| 291 | if ($chars === []) { |
| 292 | return $this; |
| 293 | } |
| 294 | |
| 295 | // Convert Unicode to GIDs |
| 296 | $gids = []; |
| 297 | foreach ($chars as $char) { |
| 298 | $cp = mb_ord($char); |
| 299 | $gids[] = $unicodeToGid[$cp] ?? 0; |
| 300 | } |
| 301 | |
| 302 | // Apply ligature substitutions |
| 303 | $gids = \Phpdftk\FontParser\TextShaper::applyLigatures($gids, $ligatures); |
| 304 | |
| 305 | if ($gids === []) { |
| 306 | return $this; |
| 307 | } |
| 308 | |
| 309 | // If we have kern pairs, emit TJ with adjustments |
| 310 | if ($kernPairs !== []) { |
| 311 | $tjParts = []; |
| 312 | $currentHex = sprintf('%04X', $gids[0]); |
| 313 | |
| 314 | for ($i = 1, $count = count($gids); $i < $count; $i++) { |
| 315 | $prevGid = $gids[$i - 1]; |
| 316 | $curGid = $gids[$i]; |
| 317 | $kern = $kernPairs[$prevGid][$curGid] ?? 0; |
| 318 | |
| 319 | if ($kern !== 0) { |
| 320 | $tjParts[] = '<' . $currentHex . '>'; |
| 321 | $tjParts[] = (string) (int) round(-$kern * 1000 / $unitsPerEm); |
| 322 | $currentHex = sprintf('%04X', $curGid); |
| 323 | } else { |
| 324 | $currentHex .= sprintf('%04X', $curGid); |
| 325 | } |
| 326 | } |
| 327 | $tjParts[] = '<' . $currentHex . '>'; |
| 328 | |
| 329 | if (count($tjParts) === 1) { |
| 330 | $this->operators[] = $tjParts[0] . ' Tj'; |
| 331 | } else { |
| 332 | $this->operators[] = '[ ' . implode(' ', $tjParts) . ' ] TJ'; |
| 333 | } |
| 334 | } else { |
| 335 | // No kerning — simple hex string |
| 336 | $hex = ''; |
| 337 | foreach ($gids as $gid) { |
| 338 | $hex .= sprintf('%04X', $gid); |
| 339 | } |
| 340 | $this->operators[] = '<' . $hex . '> Tj'; |
| 341 | } |
| 342 | |
| 343 | return $this; |
| 344 | } |
| 345 | |
| 346 | /** T* - Move to next line */ |
| 347 | public function nextLine(): self |
| 348 | { |
| 349 | $this->operators[] = 'T*'; |
| 350 | return $this; |
| 351 | } |
| 352 | |
| 353 | /** Tm - Set text matrix and text line matrix */ |
| 354 | public function setTextMatrix(float $a, float $b, float $c, float $d, float $e, float $f): self |
| 355 | { |
| 356 | $this->operators[] = sprintf( |
| 357 | '%s %s %s %s %s %s Tm', |
| 358 | $this->num($a), |
| 359 | $this->num($b), |
| 360 | $this->num($c), |
| 361 | $this->num($d), |
| 362 | $this->num($e), |
| 363 | $this->num($f), |
| 364 | ); |
| 365 | return $this; |
| 366 | } |
| 367 | |
| 368 | /** Tc - Set character spacing */ |
| 369 | public function setCharSpacing(float $cs): self |
| 370 | { |
| 371 | $this->operators[] = sprintf('%s Tc', $this->num($cs)); |
| 372 | return $this; |
| 373 | } |
| 374 | |
| 375 | /** Tw - Set word spacing */ |
| 376 | public function setWordSpacing(float $ws): self |
| 377 | { |
| 378 | $this->operators[] = sprintf('%s Tw', $this->num($ws)); |
| 379 | return $this; |
| 380 | } |
| 381 | |
| 382 | /** Tz - Set horizontal scaling */ |
| 383 | public function setHorizontalScaling(float $hs): self |
| 384 | { |
| 385 | $this->operators[] = sprintf('%s Tz', $this->num($hs)); |
| 386 | return $this; |
| 387 | } |
| 388 | |
| 389 | /** TL - Set text leading */ |
| 390 | public function setTextLeading(float $tl): self |
| 391 | { |
| 392 | $this->operators[] = sprintf('%s TL', $this->num($tl)); |
| 393 | return $this; |
| 394 | } |
| 395 | |
| 396 | /** Tr - Set text rendering mode */ |
| 397 | public function setTextRenderingMode(int $mode): self |
| 398 | { |
| 399 | $this->operators[] = sprintf('%d Tr', $mode); |
| 400 | return $this; |
| 401 | } |
| 402 | |
| 403 | /** Ts - Set text rise */ |
| 404 | public function setTextRise(float $rise): self |
| 405 | { |
| 406 | $this->operators[] = sprintf('%s Ts', $this->num($rise)); |
| 407 | return $this; |
| 408 | } |
| 409 | |
| 410 | // ----------------------------------------------------------------------- |
| 411 | // Graphics state operators |
| 412 | // ----------------------------------------------------------------------- |
| 413 | |
| 414 | /** q - Save graphics state */ |
| 415 | public function saveGraphicsState(): self |
| 416 | { |
| 417 | $this->operators[] = 'q'; |
| 418 | return $this; |
| 419 | } |
| 420 | |
| 421 | /** Q - Restore graphics state */ |
| 422 | public function restoreGraphicsState(): self |
| 423 | { |
| 424 | $this->operators[] = 'Q'; |
| 425 | return $this; |
| 426 | } |
| 427 | |
| 428 | /** w - Set line width */ |
| 429 | public function setLineWidth(float $w): self |
| 430 | { |
| 431 | $this->operators[] = sprintf('%s w', $this->num($w)); |
| 432 | return $this; |
| 433 | } |
| 434 | |
| 435 | /** J - Set line cap style */ |
| 436 | public function setLineCap(int $cap): self |
| 437 | { |
| 438 | $this->operators[] = sprintf('%d J', $cap); |
| 439 | return $this; |
| 440 | } |
| 441 | |
| 442 | /** j - Set line join style */ |
| 443 | public function setLineJoin(int $join): self |
| 444 | { |
| 445 | $this->operators[] = sprintf('%d j', $join); |
| 446 | return $this; |
| 447 | } |
| 448 | |
| 449 | /** M - Set miter limit */ |
| 450 | public function setMiterLimit(float $limit): self |
| 451 | { |
| 452 | $this->operators[] = sprintf('%s M', $this->num($limit)); |
| 453 | return $this; |
| 454 | } |
| 455 | |
| 456 | /** d - Set line dash pattern |
| 457 | * @param array<int, int|float> $dash |
| 458 | */ |
| 459 | public function setDashPattern(array $dash, int $phase): self |
| 460 | { |
| 461 | $dashStr = '[ ' . implode(' ', array_map([$this, 'num'], $dash)) . ' ]'; |
| 462 | $this->operators[] = sprintf('%s %d d', $dashStr, $phase); |
| 463 | return $this; |
| 464 | } |
| 465 | |
| 466 | /** ri - Set rendering intent */ |
| 467 | public function setRenderingIntent(string $intent): self |
| 468 | { |
| 469 | $this->operators[] = sprintf('/%s ri', $intent); |
| 470 | return $this; |
| 471 | } |
| 472 | |
| 473 | /** i - Set flatness tolerance */ |
| 474 | public function setFlatness(float $flatness): self |
| 475 | { |
| 476 | $this->operators[] = sprintf('%s i', $this->num($flatness)); |
| 477 | return $this; |
| 478 | } |
| 479 | |
| 480 | /** gs - Set graphics state from ExtGState resource */ |
| 481 | public function setGraphicsState(string $name): self |
| 482 | { |
| 483 | $this->operators[] = sprintf('/%s gs', $name); |
| 484 | return $this; |
| 485 | } |
| 486 | |
| 487 | /** cm - Concatenate matrix to current transformation matrix */ |
| 488 | public function concatMatrix(float $a, float $b, float $c, float $d, float $e, float $f): self |
| 489 | { |
| 490 | $this->operators[] = sprintf( |
| 491 | '%s %s %s %s %s %s cm', |
| 492 | $this->num($a), |
| 493 | $this->num($b), |
| 494 | $this->num($c), |
| 495 | $this->num($d), |
| 496 | $this->num($e), |
| 497 | $this->num($f), |
| 498 | ); |
| 499 | return $this; |
| 500 | } |
| 501 | |
| 502 | // ----------------------------------------------------------------------- |
| 503 | // Path construction operators |
| 504 | // ----------------------------------------------------------------------- |
| 505 | |
| 506 | /** m - Move to */ |
| 507 | public function moveTo(float $x, float $y): self |
| 508 | { |
| 509 | $this->operators[] = sprintf('%s %s m', $this->num($x), $this->num($y)); |
| 510 | return $this; |
| 511 | } |
| 512 | |
| 513 | /** l - Line to */ |
| 514 | public function lineTo(float $x, float $y): self |
| 515 | { |
| 516 | $this->operators[] = sprintf('%s %s l', $this->num($x), $this->num($y)); |
| 517 | return $this; |
| 518 | } |
| 519 | |
| 520 | /** c - Curve to (full cubic Bezier) */ |
| 521 | public function curveTo(float $x1, float $y1, float $x2, float $y2, float $x3, float $y3): self |
| 522 | { |
| 523 | $this->operators[] = sprintf( |
| 524 | '%s %s %s %s %s %s c', |
| 525 | $this->num($x1), |
| 526 | $this->num($y1), |
| 527 | $this->num($x2), |
| 528 | $this->num($y2), |
| 529 | $this->num($x3), |
| 530 | $this->num($y3), |
| 531 | ); |
| 532 | return $this; |
| 533 | } |
| 534 | |
| 535 | /** v - Curve to (current point replicated as first control point) */ |
| 536 | public function curveToV(float $x2, float $y2, float $x3, float $y3): self |
| 537 | { |
| 538 | $this->operators[] = sprintf( |
| 539 | '%s %s %s %s v', |
| 540 | $this->num($x2), |
| 541 | $this->num($y2), |
| 542 | $this->num($x3), |
| 543 | $this->num($y3), |
| 544 | ); |
| 545 | return $this; |
| 546 | } |
| 547 | |
| 548 | /** y - Curve to (final point replicated as second control point) */ |
| 549 | public function curveToY(float $x1, float $y1, float $x3, float $y3): self |
| 550 | { |
| 551 | $this->operators[] = sprintf( |
| 552 | '%s %s %s %s y', |
| 553 | $this->num($x1), |
| 554 | $this->num($y1), |
| 555 | $this->num($x3), |
| 556 | $this->num($y3), |
| 557 | ); |
| 558 | return $this; |
| 559 | } |
| 560 | |
| 561 | /** h - Close path */ |
| 562 | public function closePath(): self |
| 563 | { |
| 564 | $this->operators[] = 'h'; |
| 565 | return $this; |
| 566 | } |
| 567 | |
| 568 | /** re - Rectangle */ |
| 569 | public function rectangle(float $x, float $y, float $w, float $h): self |
| 570 | { |
| 571 | $this->operators[] = sprintf( |
| 572 | '%s %s %s %s re', |
| 573 | $this->num($x), |
| 574 | $this->num($y), |
| 575 | $this->num($w), |
| 576 | $this->num($h), |
| 577 | ); |
| 578 | return $this; |
| 579 | } |
| 580 | |
| 581 | // ----------------------------------------------------------------------- |
| 582 | // Path painting operators |
| 583 | // ----------------------------------------------------------------------- |
| 584 | |
| 585 | /** S - Stroke path */ |
| 586 | public function stroke(): self |
| 587 | { |
| 588 | $this->operators[] = 'S'; |
| 589 | return $this; |
| 590 | } |
| 591 | |
| 592 | /** s - Close and stroke */ |
| 593 | public function closeAndStroke(): self |
| 594 | { |
| 595 | $this->operators[] = 's'; |
| 596 | return $this; |
| 597 | } |
| 598 | |
| 599 | /** f - Fill path (non-zero winding) */ |
| 600 | public function fill(): self |
| 601 | { |
| 602 | $this->operators[] = 'f'; |
| 603 | return $this; |
| 604 | } |
| 605 | |
| 606 | /** f* - Fill path (even-odd rule) */ |
| 607 | public function fillEvenOdd(): self |
| 608 | { |
| 609 | $this->operators[] = 'f*'; |
| 610 | return $this; |
| 611 | } |
| 612 | |
| 613 | /** B - Fill and stroke (non-zero winding) */ |
| 614 | public function fillAndStroke(): self |
| 615 | { |
| 616 | $this->operators[] = 'B'; |
| 617 | return $this; |
| 618 | } |
| 619 | |
| 620 | /** B* - Fill and stroke (even-odd rule) */ |
| 621 | public function fillAndStrokeEvenOdd(): self |
| 622 | { |
| 623 | $this->operators[] = 'B*'; |
| 624 | return $this; |
| 625 | } |
| 626 | |
| 627 | /** b - Close, fill, and stroke (non-zero winding) */ |
| 628 | public function closeFillAndStroke(): self |
| 629 | { |
| 630 | $this->operators[] = 'b'; |
| 631 | return $this; |
| 632 | } |
| 633 | |
| 634 | /** b* - Close, fill, and stroke (even-odd rule) */ |
| 635 | public function closeFillAndStrokeEvenOdd(): self |
| 636 | { |
| 637 | $this->operators[] = 'b*'; |
| 638 | return $this; |
| 639 | } |
| 640 | |
| 641 | /** n - End path without painting */ |
| 642 | public function endPath(): self |
| 643 | { |
| 644 | $this->operators[] = 'n'; |
| 645 | return $this; |
| 646 | } |
| 647 | |
| 648 | /** W - Modify clipping path (non-zero winding) */ |
| 649 | public function clip(): self |
| 650 | { |
| 651 | $this->operators[] = 'W'; |
| 652 | return $this; |
| 653 | } |
| 654 | |
| 655 | /** W* - Modify clipping path (even-odd rule) */ |
| 656 | public function clipEvenOdd(): self |
| 657 | { |
| 658 | $this->operators[] = 'W*'; |
| 659 | return $this; |
| 660 | } |
| 661 | |
| 662 | // ----------------------------------------------------------------------- |
| 663 | // Color operators |
| 664 | // ----------------------------------------------------------------------- |
| 665 | |
| 666 | /** RG - Set stroke color (DeviceRGB) */ |
| 667 | public function setStrokeColorRGB(float $r, float $g, float $b): self |
| 668 | { |
| 669 | $this->operators[] = sprintf('%s %s %s RG', $this->num($r), $this->num($g), $this->num($b)); |
| 670 | return $this; |
| 671 | } |
| 672 | |
| 673 | /** rg - Set fill color (DeviceRGB) */ |
| 674 | public function setFillColorRGB(float $r, float $g, float $b): self |
| 675 | { |
| 676 | $this->operators[] = sprintf('%s %s %s rg', $this->num($r), $this->num($g), $this->num($b)); |
| 677 | return $this; |
| 678 | } |
| 679 | |
| 680 | /** K - Set stroke color (DeviceCMYK) */ |
| 681 | public function setStrokeColorCMYK(float $c, float $m, float $y, float $k): self |
| 682 | { |
| 683 | $this->operators[] = sprintf( |
| 684 | '%s %s %s %s K', |
| 685 | $this->num($c), |
| 686 | $this->num($m), |
| 687 | $this->num($y), |
| 688 | $this->num($k), |
| 689 | ); |
| 690 | return $this; |
| 691 | } |
| 692 | |
| 693 | /** k - Set fill color (DeviceCMYK) */ |
| 694 | public function setFillColorCMYK(float $c, float $m, float $y, float $k): self |
| 695 | { |
| 696 | $this->operators[] = sprintf( |
| 697 | '%s %s %s %s k', |
| 698 | $this->num($c), |
| 699 | $this->num($m), |
| 700 | $this->num($y), |
| 701 | $this->num($k), |
| 702 | ); |
| 703 | return $this; |
| 704 | } |
| 705 | |
| 706 | /** G - Set stroke color (DeviceGray) */ |
| 707 | public function setStrokeColorGray(float $g): self |
| 708 | { |
| 709 | $this->operators[] = sprintf('%s G', $this->num($g)); |
| 710 | return $this; |
| 711 | } |
| 712 | |
| 713 | /** g - Set fill color (DeviceGray) */ |
| 714 | public function setFillColorGray(float $g): self |
| 715 | { |
| 716 | $this->operators[] = sprintf('%s g', $this->num($g)); |
| 717 | return $this; |
| 718 | } |
| 719 | |
| 720 | /** CS - Set stroke color space */ |
| 721 | public function setStrokeColorSpace(string $name): self |
| 722 | { |
| 723 | $this->operators[] = sprintf('/%s CS', $name); |
| 724 | return $this; |
| 725 | } |
| 726 | |
| 727 | /** cs - Set fill color space */ |
| 728 | public function setFillColorSpace(string $name): self |
| 729 | { |
| 730 | $this->operators[] = sprintf('/%s cs', $name); |
| 731 | return $this; |
| 732 | } |
| 733 | |
| 734 | /** SCN - Set stroke color (for special color spaces) */ |
| 735 | public function setStrokeColor(float|int|string ...$components): self |
| 736 | { |
| 737 | $parts = array_map(fn($c) => is_string($c) ? '/' . $c : $this->num($c), $components); |
| 738 | $this->operators[] = implode(' ', $parts) . ' SCN'; |
| 739 | return $this; |
| 740 | } |
| 741 | |
| 742 | /** scn - Set fill color (for special color spaces) */ |
| 743 | public function setFillColor(float|int|string ...$components): self |
| 744 | { |
| 745 | $parts = array_map(fn($c) => is_string($c) ? '/' . $c : $this->num($c), $components); |
| 746 | $this->operators[] = implode(' ', $parts) . ' scn'; |
| 747 | return $this; |
| 748 | } |
| 749 | |
| 750 | // ----------------------------------------------------------------------- |
| 751 | // XObject operator |
| 752 | // ----------------------------------------------------------------------- |
| 753 | |
| 754 | /** Do - Invoke named XObject */ |
| 755 | public function doXObject(string $name): self |
| 756 | { |
| 757 | $this->operators[] = sprintf('/%s Do', $name); |
| 758 | return $this; |
| 759 | } |
| 760 | |
| 761 | // ----------------------------------------------------------------------- |
| 762 | // Inline image |
| 763 | // ----------------------------------------------------------------------- |
| 764 | |
| 765 | /** |
| 766 | * BI...ID...EI - Inline image. |
| 767 | * |
| 768 | * @param array<string, string> $params Associative array of image dictionary entries (abbreviated keys). |
| 769 | * @param string $data Raw image data. |
| 770 | */ |
| 771 | public function inlineImage(array $params, string $data): self |
| 772 | { |
| 773 | $lines = ['BI']; |
| 774 | foreach ($params as $key => $value) { |
| 775 | $lines[] = '/' . $key . ' ' . $value; |
| 776 | } |
| 777 | $lines[] = 'ID'; |
| 778 | $lines[] = $data; |
| 779 | $lines[] = 'EI'; |
| 780 | $this->operators[] = implode("\n", $lines); |
| 781 | return $this; |
| 782 | } |
| 783 | |
| 784 | // ----------------------------------------------------------------------- |
| 785 | // Typed color methods using phpdftk/color objects |
| 786 | // ----------------------------------------------------------------------- |
| 787 | |
| 788 | /** Set fill color using an RgbColor value object */ |
| 789 | public function setFillRgbColor(RgbColor $color): self |
| 790 | { |
| 791 | return $this->setFillColorRGB($color->r, $color->g, $color->b); |
| 792 | } |
| 793 | |
| 794 | /** Set stroke color using an RgbColor value object */ |
| 795 | public function setStrokeRgbColor(RgbColor $color): self |
| 796 | { |
| 797 | return $this->setStrokeColorRGB($color->r, $color->g, $color->b); |
| 798 | } |
| 799 | |
| 800 | /** Set fill color using a CmykColor value object */ |
| 801 | public function setFillCmykColor(CmykColor $color): self |
| 802 | { |
| 803 | return $this->setFillColorCMYK($color->c, $color->m, $color->y, $color->k); |
| 804 | } |
| 805 | |
| 806 | /** Set stroke color using a CmykColor value object */ |
| 807 | public function setStrokeCmykColor(CmykColor $color): self |
| 808 | { |
| 809 | return $this->setStrokeColorCMYK($color->c, $color->m, $color->y, $color->k); |
| 810 | } |
| 811 | |
| 812 | /** Set fill color using a GrayColor value object */ |
| 813 | public function setFillGrayColor(GrayColor $color): self |
| 814 | { |
| 815 | return $this->setFillColorGray($color->gray); |
| 816 | } |
| 817 | |
| 818 | /** Set stroke color using a GrayColor value object */ |
| 819 | public function setStrokeGrayColor(GrayColor $color): self |
| 820 | { |
| 821 | return $this->setStrokeColorGray($color->gray); |
| 822 | } |
| 823 | |
| 824 | // ----------------------------------------------------------------------- |
| 825 | // Geometry object helpers |
| 826 | // ----------------------------------------------------------------------- |
| 827 | |
| 828 | /** re - Rectangle using a Geometry Rectangle value object */ |
| 829 | public function rectangleObject(Rectangle $r): self |
| 830 | { |
| 831 | return $this->rectangle($r->x, $r->y, $r->width, $r->height); |
| 832 | } |
| 833 | |
| 834 | /** cm - Concatenate matrix using a Geometry Matrix value object */ |
| 835 | public function concatMatrixObject(Matrix $m): self |
| 836 | { |
| 837 | return $this->concatMatrix($m->a, $m->b, $m->c, $m->d, $m->e, $m->f); |
| 838 | } |
| 839 | |
| 840 | // ----------------------------------------------------------------------- |
| 841 | // Shorthand text operators |
| 842 | // ----------------------------------------------------------------------- |
| 843 | |
| 844 | /** ' - Move to next line and show text (equivalent to T* string Tj) */ |
| 845 | public function moveToNextLineAndShowText(string $text): self |
| 846 | { |
| 847 | $this->operators[] = $this->escapeString($text) . " '"; |
| 848 | return $this; |
| 849 | } |
| 850 | |
| 851 | /** |
| 852 | * " - Set word/char spacing, move to next line, and show text |
| 853 | * (equivalent to aw Tw ac Tc T* string Tj) |
| 854 | */ |
| 855 | public function setSpacingMoveAndShowText(float $aw, float $ac, string $text): self |
| 856 | { |
| 857 | $this->operators[] = sprintf( |
| 858 | '%s %s %s "', |
| 859 | $this->num($aw), |
| 860 | $this->num($ac), |
| 861 | $this->escapeString($text), |
| 862 | ); |
| 863 | return $this; |
| 864 | } |
| 865 | |
| 866 | // ----------------------------------------------------------------------- |
| 867 | // Shading operator |
| 868 | // ----------------------------------------------------------------------- |
| 869 | |
| 870 | /** sh - Paint the shape and colour defined by a shading pattern */ |
| 871 | public function paintShading(string $name): self |
| 872 | { |
| 873 | $this->operators[] = sprintf('/%s sh', $name); |
| 874 | return $this; |
| 875 | } |
| 876 | |
| 877 | // ----------------------------------------------------------------------- |
| 878 | // Type 3 font glyph operators |
| 879 | // ----------------------------------------------------------------------- |
| 880 | |
| 881 | /** d0 - Set glyph width in a Type 3 font (coloured glyph) */ |
| 882 | public function setGlyphWidth(float $wx, float $wy): self |
| 883 | { |
| 884 | $this->operators[] = sprintf('%s %s d0', $this->num($wx), $this->num($wy)); |
| 885 | return $this; |
| 886 | } |
| 887 | |
| 888 | /** d1 - Set glyph width and bounding box in a Type 3 font (uncoloured glyph) */ |
| 889 | public function setGlyphWidthAndBoundingBox( |
| 890 | float $wx, |
| 891 | float $wy, |
| 892 | float $llx, |
| 893 | float $lly, |
| 894 | float $urx, |
| 895 | float $ury, |
| 896 | ): self { |
| 897 | $this->operators[] = sprintf( |
| 898 | '%s %s %s %s %s %s d1', |
| 899 | $this->num($wx), |
| 900 | $this->num($wy), |
| 901 | $this->num($llx), |
| 902 | $this->num($lly), |
| 903 | $this->num($urx), |
| 904 | $this->num($ury), |
| 905 | ); |
| 906 | return $this; |
| 907 | } |
| 908 | |
| 909 | // ----------------------------------------------------------------------- |
| 910 | // Marked content operators |
| 911 | // ----------------------------------------------------------------------- |
| 912 | |
| 913 | /** MP - Define a marked-content point */ |
| 914 | public function markedContentPoint(string $tag): self |
| 915 | { |
| 916 | $this->operators[] = sprintf('/%s MP', $tag); |
| 917 | return $this; |
| 918 | } |
| 919 | |
| 920 | /** |
| 921 | * DP - Define a marked-content point with property list. |
| 922 | * $properties is either a resource name (string) or an inline dict string. |
| 923 | */ |
| 924 | public function markedContentPointWithProperties(string $tag, string $properties): self |
| 925 | { |
| 926 | $this->operators[] = sprintf('/%s %s DP', $tag, $properties); |
| 927 | return $this; |
| 928 | } |
| 929 | |
| 930 | /** BMC - Begin a marked-content sequence */ |
| 931 | public function beginMarkedContent(string $tag): self |
| 932 | { |
| 933 | $this->operators[] = sprintf('/%s BMC', $tag); |
| 934 | return $this; |
| 935 | } |
| 936 | |
| 937 | /** |
| 938 | * BDC - Begin a marked-content sequence with property list. |
| 939 | * $properties is either a resource name (e.g. '/MC0') or an inline dict string. |
| 940 | */ |
| 941 | public function beginMarkedContentWithProperties(string $tag, string $properties): self |
| 942 | { |
| 943 | $this->operators[] = sprintf('/%s %s BDC', $tag, $properties); |
| 944 | return $this; |
| 945 | } |
| 946 | |
| 947 | /** EMC - End a marked-content sequence */ |
| 948 | public function endMarkedContent(): self |
| 949 | { |
| 950 | $this->operators[] = 'EMC'; |
| 951 | return $this; |
| 952 | } |
| 953 | |
| 954 | // ----------------------------------------------------------------------- |
| 955 | // Compatibility operators |
| 956 | // ----------------------------------------------------------------------- |
| 957 | |
| 958 | /** BX - Begin a compatibility section (unknown operators are ignored) */ |
| 959 | public function beginCompatibility(): self |
| 960 | { |
| 961 | $this->operators[] = 'BX'; |
| 962 | return $this; |
| 963 | } |
| 964 | |
| 965 | /** EX - End a compatibility section */ |
| 966 | public function endCompatibility(): self |
| 967 | { |
| 968 | $this->operators[] = 'EX'; |
| 969 | return $this; |
| 970 | } |
| 971 | |
| 972 | // ----------------------------------------------------------------------- |
| 973 | // Raw operator |
| 974 | // ----------------------------------------------------------------------- |
| 975 | |
| 976 | /** Emit a raw PDF operator string verbatim. */ |
| 977 | public function raw(string $operator): self |
| 978 | { |
| 979 | $this->operators[] = $operator; |
| 980 | return $this; |
| 981 | } |
| 982 | |
| 983 | // ----------------------------------------------------------------------- |
| 984 | // Serialization |
| 985 | // ----------------------------------------------------------------------- |
| 986 | |
| 987 | public function toPdf(): string |
| 988 | { |
| 989 | $this->data = implode("\n", $this->operators); |
| 990 | return parent::toPdf(); |
| 991 | } |
| 992 | |
| 993 | // ----------------------------------------------------------------------- |
| 994 | // Helpers |
| 995 | // ----------------------------------------------------------------------- |
| 996 | |
| 997 | /** |
| 998 | * Format a number for PDF output (no trailing zeros for floats). |
| 999 | */ |
| 1000 | private function num(int|float $n): string |
| 1001 | { |
| 1002 | if (is_int($n)) { |
| 1003 | return (string) $n; |
| 1004 | } |
| 1005 | $s = rtrim(rtrim(sprintf('%.6f', $n), '0'), '.'); |
| 1006 | return $s === '' || $s === '-0' ? '0' : $s; |
| 1007 | } |
| 1008 | |
| 1009 | /** |
| 1010 | * Return a PDF literal string including the outer parentheses. |
| 1011 | * |
| 1012 | * Callers must NOT wrap the result again. Escapes `(`, `)`, `\`, |
| 1013 | * and control characters per ISO 32000-2 S 7.3.4.2. |
| 1014 | */ |
| 1015 | private function escapeString(string $text): string |
| 1016 | { |
| 1017 | $escaped = ''; |
| 1018 | $len = strlen($text); |
| 1019 | for ($i = 0; $i < $len; $i++) { |
| 1020 | $c = $text[$i]; |
| 1021 | $escaped .= match ($c) { |
| 1022 | '\\' => '\\\\', |
| 1023 | '(' => '\\(', |
| 1024 | ')' => '\\)', |
| 1025 | "\n" => '\\n', |
| 1026 | "\r" => '\\r', |
| 1027 | "\t" => '\\t', |
| 1028 | default => $c, |
| 1029 | }; |
| 1030 | } |
| 1031 | return '(' . $escaped . ')'; |
| 1032 | } |
| 1033 | } |