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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\Pdf\Writer; |
| 6 | |
| 7 | use Phpdftk\Pdf\Core\Content\ContentStream; |
| 8 | use Phpdftk\Pdf\Core\Content\Resources; |
| 9 | use Phpdftk\Pdf\Core\Document\Catalog; |
| 10 | use Phpdftk\Pdf\Core\Document\Destination; |
| 11 | use Phpdftk\Pdf\Core\Document\Info; |
| 12 | use Phpdftk\Pdf\Core\Document\Outline; |
| 13 | use Phpdftk\Pdf\Core\Document\OutlineItem; |
| 14 | use Phpdftk\Pdf\Core\Document\Page as CorePage; |
| 15 | use Phpdftk\Pdf\Core\Document\PageLabel; |
| 16 | use Phpdftk\Pdf\Core\Document\PageTree; |
| 17 | use Phpdftk\Filesystem\LocalFilesystem; |
| 18 | use Phpdftk\Pdf\Core\File\PdfFileWriter; |
| 19 | use Phpdftk\Pdf\Core\Font\CIDFontType0Font; |
| 20 | use Phpdftk\Pdf\Core\Font\CIDSystemInfo; |
| 21 | use Phpdftk\Pdf\Core\Font\Font as CoreFont; |
| 22 | use Phpdftk\Pdf\Core\Font\FontDescriptor; |
| 23 | use Phpdftk\Pdf\Core\Font\FontFile\CFFFontFile; |
| 24 | use Phpdftk\Pdf\Core\Font\FontFile\Type1FontFile; |
| 25 | use Phpdftk\Pdf\Core\Font\TrueTypeFont; |
| 26 | use Phpdftk\Pdf\Core\Font\Type1Font; |
| 27 | use Phpdftk\FontParser\TrueTypeSubsetter; |
| 28 | use Phpdftk\Encoding\TextEncoder; |
| 29 | use Phpdftk\Encoding\WinAnsiEncoder; |
| 30 | use Phpdftk\Pdf\Core\Font\Type0Font; |
| 31 | use Phpdftk\Pdf\Core\Font\Type0FontFactory; |
| 32 | use Phpdftk\Pdf\Core\Interactive\Signature\Pkcs7Signer; |
| 33 | use Phpdftk\Pdf\Core\Interactive\Signature\SignatureValue; |
| 34 | use Phpdftk\Pdf\Core\Interactive\Signature\TsaClient; |
| 35 | use Phpdftk\Pdf\Conformance\ConformanceException; |
| 36 | use Phpdftk\Pdf\Conformance\ConformanceMode; |
| 37 | use Phpdftk\Pdf\Conformance\Inspection\WriterDocumentInspector; |
| 38 | use Phpdftk\Pdf\Conformance\Metadata\ConformanceXmpWriter; |
| 39 | use Phpdftk\Pdf\Conformance\Profile\ConformanceProfile; |
| 40 | use Phpdftk\Pdf\Conformance\Result\ConformanceResult; |
| 41 | use Phpdftk\Pdf\Conformance\Validator\ConformanceValidator; |
| 42 | use Phpdftk\Pdf\Core\Security\PdfEncryptor; |
| 43 | use Phpdftk\Pdf\Core\PdfArray; |
| 44 | use Phpdftk\Pdf\Core\PdfDictionary; |
| 45 | use Phpdftk\Pdf\Core\PdfName; |
| 46 | use Phpdftk\Pdf\Core\PdfNumber; |
| 47 | use Phpdftk\Pdf\Core\PdfObject; |
| 48 | use Phpdftk\Pdf\Core\PdfReference; |
| 49 | use Phpdftk\Pdf\Core\PdfStream; |
| 50 | use Phpdftk\Pdf\Core\PdfVersion; |
| 51 | use Phpdftk\Geometry\Rectangle; |
| 52 | use Phpdftk\ImageMetadata\ImageParser; |
| 53 | use Phpdftk\Pdf\Core\Graphics\ColorSpace\ICCBased; |
| 54 | |
| 55 | /** |
| 56 | * Ergonomic PDF document builder. |
| 57 | * |
| 58 | * `PdfWriter` is the friendly facade: it owns a {@see PdfFileWriter} |
| 59 | * under the hood and provides one method per "thing a user wants to |
| 60 | * put in a document" — pages, fonts, content streams, images, |
| 61 | * bookmarks, page labels, named destinations, signatures. |
| 62 | * |
| 63 | * The byte-level file-assembly logic (header, xref, trailer, |
| 64 | * signature patching) lives in `PdfFileWriter` in the core package. |
| 65 | * |
| 66 | * Usage: |
| 67 | * $writer = new PdfWriter(); |
| 68 | * $page = $writer->addPage(612, 792); |
| 69 | * $font = $writer->addFont(new Type1Font(StandardFont::Helvetica)); |
| 70 | * $cs = $writer->addContentStream($page); |
| 71 | * $cs->beginText()->setFont('F1', 12)->moveTextPosition(72, 720)->showText('Hi')->endText(); |
| 72 | * $writer->save('/path/to/output.pdf'); |
| 73 | * |
| 74 | * @api |
| 75 | */ |
| 76 | class PdfWriter |
| 77 | { |
| 78 | private PdfFileWriter $file; |
| 79 | private Catalog $catalog; |
| 80 | private PageTree $pageTree; |
| 81 | |
| 82 | /** @var CorePage[] */ |
| 83 | private array $pages = []; |
| 84 | |
| 85 | /** @var array<string, CoreFont|Type0Font> keyed by resource name (F1, F2, …) */ |
| 86 | private array $fonts = []; |
| 87 | |
| 88 | /** |
| 89 | * @var array<string, TextEncoder> resource name → encoder. |
| 90 | * Tracked alongside $fonts so getEncodingWarnings() can collect missing |
| 91 | * codepoints across the whole document without holding onto Font handles. |
| 92 | */ |
| 93 | private array $fontEncoders = []; |
| 94 | |
| 95 | /** @var array<int, ContentStream> */ |
| 96 | private array $contentStreams = []; |
| 97 | |
| 98 | /** Running counter for font resource names */ |
| 99 | private int $fontCounter = 0; |
| 100 | |
| 101 | /** Running counter for image resource names */ |
| 102 | private int $imageCounter = 0; |
| 103 | |
| 104 | /** Whether to produce linearized (web-optimized) output */ |
| 105 | private bool $linearized = false; |
| 106 | |
| 107 | /** Active conformance mode, if any. */ |
| 108 | private ?ConformanceMode $conformanceMode = null; |
| 109 | |
| 110 | /** @var list<ConformanceResult> */ |
| 111 | private array $conformanceResults = []; |
| 112 | |
| 113 | /** |
| 114 | * Lazily-cached PdfDoc view of this writer, used by the deprecated |
| 115 | * forwarding stubs below. |
| 116 | */ |
| 117 | private ?PdfDoc $cachedDoc = null; |
| 118 | |
| 119 | public function __construct(bool $compressStreams = true, PdfVersion|string $version = PdfFileWriter::DEFAULT_PDF_VERSION) |
| 120 | { |
| 121 | $this->file = new PdfFileWriter($compressStreams, version: $version); |
| 122 | $this->catalog = new Catalog(); |
| 123 | $this->file->setCatalog($this->catalog); |
| 124 | |
| 125 | $this->pageTree = new PageTree(); |
| 126 | $this->file->register($this->pageTree); |
| 127 | |
| 128 | // Wire up catalog -> page tree |
| 129 | $this->catalog->pages = new PdfReference($this->pageTree->objectNumber); |
| 130 | } |
| 131 | |
| 132 | // ----------------------------------------------------------------------- |
| 133 | // Public API |
| 134 | // ----------------------------------------------------------------------- |
| 135 | |
| 136 | public function getCatalog(): Catalog |
| 137 | { |
| 138 | return $this->catalog; |
| 139 | } |
| 140 | |
| 141 | public function getPageTree(): PageTree |
| 142 | { |
| 143 | return $this->pageTree; |
| 144 | } |
| 145 | |
| 146 | /** |
| 147 | * Return all registered fonts, keyed by resource name. |
| 148 | * |
| 149 | * @return array<string, CoreFont|Type0Font> |
| 150 | */ |
| 151 | public function getFonts(): array |
| 152 | { |
| 153 | return $this->fonts; |
| 154 | } |
| 155 | |
| 156 | /** |
| 157 | * Return all content streams added to the document. |
| 158 | * |
| 159 | * @return array<int, ContentStream> |
| 160 | */ |
| 161 | public function getContentStreams(): array |
| 162 | { |
| 163 | return $this->contentStreams; |
| 164 | } |
| 165 | |
| 166 | /** |
| 167 | * @deprecated Use {@see PdfDoc::setInfo()} instead. This forwarder is |
| 168 | * retained for one minor release and will be removed. |
| 169 | */ |
| 170 | public function setInfo(Info $info): void |
| 171 | { |
| 172 | $this->doc()->setInfo($info); |
| 173 | } |
| 174 | |
| 175 | /** |
| 176 | * Add a new page. Accepts either a Rectangle (from phpdftk/geometry) or |
| 177 | * explicit width/height floats. Default is US Letter (612×792 pt). |
| 178 | */ |
| 179 | public function addPage(Rectangle|float $widthOrRect = 612, float $height = 792): Page |
| 180 | { |
| 181 | if ($widthOrRect instanceof Rectangle) { |
| 182 | $width = $widthOrRect->width; |
| 183 | $height = $widthOrRect->height; |
| 184 | } else { |
| 185 | $width = $widthOrRect; |
| 186 | } |
| 187 | |
| 188 | $corePage = new CorePage(); |
| 189 | $corePage->parent = new PdfReference($this->pageTree->objectNumber); |
| 190 | $corePage->mediaBox = new PdfArray([ |
| 191 | new PdfNumber(0), |
| 192 | new PdfNumber(0), |
| 193 | new PdfNumber($width), |
| 194 | new PdfNumber($height), |
| 195 | ]); |
| 196 | $corePage->resources = new Resources(); |
| 197 | |
| 198 | $this->file->register($corePage); |
| 199 | $this->pages[] = $corePage; |
| 200 | |
| 201 | // Update page tree |
| 202 | $this->pageTree->kids[] = new PdfReference($corePage->objectNumber); |
| 203 | $this->pageTree->count = count($this->pages); |
| 204 | |
| 205 | return new Page($corePage, $this); |
| 206 | } |
| 207 | |
| 208 | /** |
| 209 | * Register a font, auto-assign a resource name (F1, F2, …), and return the name. |
| 210 | * The font is added to ALL existing pages' resources. For per-page fonts, add |
| 211 | * directly to page->resources. |
| 212 | */ |
| 213 | public function addFont(CoreFont $font, CorePage|Page|null $page = null): Font |
| 214 | { |
| 215 | $this->fontCounter++; |
| 216 | $name = 'F' . $this->fontCounter; |
| 217 | |
| 218 | $parsedData = null; |
| 219 | if ($font instanceof TrueTypeFont && $font->parsedFontData !== null) { |
| 220 | $this->embedTrueTypeFont($font); |
| 221 | $parsedData = $font->parsedFontData; |
| 222 | } elseif ($font instanceof Type1Font && $font->parsedFontData !== null) { |
| 223 | $this->embedType1Font($font); |
| 224 | } |
| 225 | |
| 226 | $this->file->register($font); |
| 227 | $this->fonts[$name] = $font; |
| 228 | $ref = new PdfReference($font->objectNumber); |
| 229 | |
| 230 | $corePage = $page instanceof Page ? $page->corePage() : $page; |
| 231 | if ($corePage !== null) { |
| 232 | $corePage->resources?->addFont($name, $ref); |
| 233 | } else { |
| 234 | // Add to all existing pages |
| 235 | foreach ($this->pages as $p) { |
| 236 | $p->resources?->addFont($name, $ref); |
| 237 | } |
| 238 | } |
| 239 | |
| 240 | $family = $font->baseFont !== null ? $font->baseFont->value : 'Unknown'; |
| 241 | |
| 242 | $encoder = $this->buildEncoderFor($font); |
| 243 | if ($encoder !== null) { |
| 244 | $this->fontEncoders[$name] = $encoder; |
| 245 | } |
| 246 | |
| 247 | return new Font($name, $family, $parsedData, $encoder); |
| 248 | } |
| 249 | |
| 250 | /** |
| 251 | * Pick the right text encoder for a font being registered. WinAnsi for |
| 252 | * Latin-script Type1 standard fonts and any TrueType font (the writer |
| 253 | * embeds those with /Encoding /WinAnsiEncoding); null for everything |
| 254 | * else. Composite/CID fonts go through a separate registration path |
| 255 | * (addCompositeFont), so they never reach this method. |
| 256 | */ |
| 257 | private function buildEncoderFor(CoreFont $font): ?TextEncoder |
| 258 | { |
| 259 | if ($font instanceof TrueTypeFont) { |
| 260 | return new WinAnsiEncoder(); |
| 261 | } |
| 262 | if ($font instanceof Type1Font) { |
| 263 | $base = $font->baseFont?->value; |
| 264 | if ($base === 'Symbol' || $base === 'ZapfDingbats') { |
| 265 | return null; |
| 266 | } |
| 267 | return new WinAnsiEncoder(); |
| 268 | } |
| 269 | return null; |
| 270 | } |
| 271 | |
| 272 | /** |
| 273 | * Build and register a Type 0 composite font from TrueType font data. |
| 274 | * |
| 275 | * Creates the full CID font stack: Type0Font -> CIDFontType2 -> FontDescriptor -> FontFile2, |
| 276 | * plus a ToUnicode CMap. The font is subset to include only the glyphs needed for the |
| 277 | * given codepoints. |
| 278 | * |
| 279 | * @param \Phpdftk\FontParser\TrueTypeData $data Parsed TrueType font data |
| 280 | * @param int[] $usedCodepoints Unicode codepoints used in the document |
| 281 | * @param CorePage|Page|null $page If set, add font only to this page |
| 282 | * @return Font Opaque font handle |
| 283 | */ |
| 284 | public function addCompositeFont(\Phpdftk\FontParser\TrueTypeData $data, array $usedCodepoints, CorePage|Page|null $page = null): Font |
| 285 | { |
| 286 | $this->fontCounter++; |
| 287 | $name = 'F' . $this->fontCounter; |
| 288 | |
| 289 | [$type0Font, $additionalObjects, $fontStream, $descriptor, $cidFont, $toUnicodeStream, $unicodeToGid, $oldToNewGid] = |
| 290 | Type0FontFactory::fromTrueTypeData($data, $usedCodepoints); |
| 291 | |
| 292 | // Register all objects |
| 293 | $this->file->register($fontStream); |
| 294 | $descriptor->fontFile2 = new PdfReference($fontStream->objectNumber); |
| 295 | |
| 296 | $this->file->register($descriptor); |
| 297 | $cidFont->fontDescriptor = new PdfReference($descriptor->objectNumber); |
| 298 | |
| 299 | $this->file->register($cidFont); |
| 300 | $type0Font->descendantFonts = new PdfArray([new PdfReference($cidFont->objectNumber)]); |
| 301 | |
| 302 | $this->file->register($toUnicodeStream); |
| 303 | $type0Font->toUnicode = new PdfReference($toUnicodeStream->objectNumber); |
| 304 | |
| 305 | $this->file->register($type0Font); |
| 306 | $this->fonts[$name] = $type0Font; |
| 307 | $ref = new PdfReference($type0Font->objectNumber); |
| 308 | |
| 309 | $corePage = $page instanceof Page ? $page->corePage() : $page; |
| 310 | if ($corePage !== null) { |
| 311 | $corePage->resources?->addFont($name, $ref); |
| 312 | } else { |
| 313 | foreach ($this->pages as $p) { |
| 314 | $p->resources?->addFont($name, $ref); |
| 315 | } |
| 316 | } |
| 317 | |
| 318 | return new Font($name, $data->postScriptName, $data, unicodeToGid: $unicodeToGid, oldToNewGid: $oldToNewGid); |
| 319 | } |
| 320 | |
| 321 | /** |
| 322 | * Build and register an OpenType CFF composite font. |
| 323 | * |
| 324 | * Creates the Type 0 → CIDFontType0 → FontDescriptor → CFFFontFile |
| 325 | * stack with a ToUnicode CMap for text extraction. |
| 326 | * |
| 327 | * @param \Phpdftk\FontParser\OpenTypeData $data Parsed OpenType font data |
| 328 | * @param int[] $usedCodepoints Unicode codepoints used in the document |
| 329 | * @param CorePage|Page|null $page If set, add font only to this page |
| 330 | * @param int[] $extraGids Extra pre-subset GIDs to retain even when no |
| 331 | * codepoint maps to them. Math fonts use this to keep stretchy |
| 332 | * variants and assembly parts in the subset - those glyphs have |
| 333 | * no Unicode codepoint and would otherwise be dropped by the |
| 334 | * CFF subsetter. |
| 335 | * @return Font Opaque font handle |
| 336 | */ |
| 337 | public function addOpenTypeFont( |
| 338 | \Phpdftk\FontParser\OpenTypeData $data, |
| 339 | array $usedCodepoints, |
| 340 | CorePage|Page|null $page = null, |
| 341 | array $extraGids = [], |
| 342 | ): Font { |
| 343 | $this->fontCounter++; |
| 344 | $name = 'F' . $this->fontCounter; |
| 345 | |
| 346 | // Font descriptor |
| 347 | $descriptor = new FontDescriptor(new PdfName($data->postScriptName)); |
| 348 | $descriptor->flags = $data->flags; |
| 349 | $descriptor->fontBBox = new PdfArray([ |
| 350 | new PdfNumber($data->fontBBox[0]), |
| 351 | new PdfNumber($data->fontBBox[1]), |
| 352 | new PdfNumber($data->fontBBox[2]), |
| 353 | new PdfNumber($data->fontBBox[3]), |
| 354 | ]); |
| 355 | $descriptor->italicAngle = $data->italicAngle; |
| 356 | $descriptor->ascent = $data->ascent; |
| 357 | $descriptor->descent = $data->descent; |
| 358 | $descriptor->capHeight = $data->capHeight; |
| 359 | $descriptor->xHeight = $data->xHeight; |
| 360 | $descriptor->stemV = $data->stemV; |
| 361 | |
| 362 | // Subset CFF table to only include used glyphs. |
| 363 | $usedGids = []; |
| 364 | $codepointsByOldGid = []; |
| 365 | foreach ($usedCodepoints as $cp) { |
| 366 | $gid = $data->fullUnicodeToGid[$cp] ?? null; |
| 367 | if ($gid !== null) { |
| 368 | $usedGids[] = $gid; |
| 369 | $codepointsByOldGid[$gid] = $cp; |
| 370 | } |
| 371 | } |
| 372 | // Add codepoint-less glyphs (math variants, assembly parts). |
| 373 | // Dedupe via array_values + array_unique so the subsetter sees |
| 374 | // each GID once even when callers double-register. |
| 375 | foreach ($extraGids as $gid) { |
| 376 | $usedGids[] = $gid; |
| 377 | } |
| 378 | $usedGids = array_values(array_unique($usedGids)); |
| 379 | $cffSubsetter = new \Phpdftk\FontParser\CffSubsetter(); |
| 380 | $cffBytes = $cffSubsetter->subset($data->cffBytes, $usedGids); |
| 381 | $cffGidMap = $cffSubsetter->getGidMap(); |
| 382 | |
| 383 | // Post-subset Unicode → new GID map. Drives the /W array, the |
| 384 | // ToUnicode CMap, and the Font handle accessor below. |
| 385 | $unicodeToGidSubset = []; |
| 386 | foreach ($codepointsByOldGid as $oldGid => $cp) { |
| 387 | $newGid = $cffGidMap[$oldGid] ?? null; |
| 388 | if ($newGid !== null) { |
| 389 | $unicodeToGidSubset[$cp] = $newGid; |
| 390 | } |
| 391 | } |
| 392 | |
| 393 | // CFF font program stream (embed subsetted CFF table bytes) |
| 394 | $cffStream = new CFFFontFile($cffBytes, 'CIDFontType0C'); |
| 395 | $this->file->register($cffStream); |
| 396 | $descriptor->fontFile3 = new PdfReference($cffStream->objectNumber); |
| 397 | $this->file->register($descriptor); |
| 398 | |
| 399 | // CID font |
| 400 | $cidSystemInfo = new CIDSystemInfo('Adobe', 'Identity', 0); |
| 401 | $cidFont = new CIDFontType0Font($data->postScriptName, $cidSystemInfo); |
| 402 | $cidFont->fontDescriptor = new PdfReference($descriptor->objectNumber); |
| 403 | |
| 404 | // Build /W widths array, indexed by post-subset CID/GID. |
| 405 | $scale = fn(int $v): int => (int) round($v * 1000 / $data->unitsPerEm); |
| 406 | $wEntries = []; |
| 407 | foreach ($codepointsByOldGid as $oldGid => $cp) { |
| 408 | $newGid = $cffGidMap[$oldGid] ?? null; |
| 409 | if ($newGid !== null && isset($data->glyphWidths[$oldGid])) { |
| 410 | $wEntries[$newGid] = new PdfNumber($scale($data->glyphWidths[$oldGid])); |
| 411 | } |
| 412 | } |
| 413 | if (!empty($wEntries)) { |
| 414 | ksort($wEntries); |
| 415 | $wArray = []; |
| 416 | $currentRun = []; |
| 417 | $currentStart = -1; |
| 418 | $lastGid = -2; |
| 419 | foreach ($wEntries as $gid => $width) { |
| 420 | if ($gid !== $lastGid + 1) { |
| 421 | if (!empty($currentRun)) { |
| 422 | $wArray[] = new PdfNumber($currentStart); |
| 423 | $wArray[] = new PdfArray($currentRun); |
| 424 | } |
| 425 | $currentStart = $gid; |
| 426 | $currentRun = [$width]; |
| 427 | } else { |
| 428 | $currentRun[] = $width; |
| 429 | } |
| 430 | $lastGid = $gid; |
| 431 | } |
| 432 | $wArray[] = new PdfNumber($currentStart); |
| 433 | $wArray[] = new PdfArray($currentRun); |
| 434 | $cidFont->w = new PdfArray($wArray); |
| 435 | } |
| 436 | |
| 437 | $this->file->register($cidFont); |
| 438 | |
| 439 | // ToUnicode CMap — keyed by post-subset GID so text extraction |
| 440 | // sees the same identifiers the viewer renders against. |
| 441 | $gidToUnicode = []; |
| 442 | foreach ($unicodeToGidSubset as $cp => $newGid) { |
| 443 | $gidToUnicode[$newGid] = $cp; |
| 444 | } |
| 445 | ksort($gidToUnicode); |
| 446 | $cmapEntries = []; |
| 447 | foreach ($gidToUnicode as $gid => $unicode) { |
| 448 | $cmapEntries[] = sprintf('<%04X> <%04X>', $gid, $unicode); |
| 449 | } |
| 450 | $cmapChunks = array_chunk($cmapEntries, 100); |
| 451 | $cmapBlocks = ''; |
| 452 | foreach ($cmapChunks as $chunk) { |
| 453 | $cmapBlocks .= count($chunk) . " beginbfchar\n" |
| 454 | . implode("\n", $chunk) . "\n" |
| 455 | . "endbfchar\n"; |
| 456 | } |
| 457 | $cmapProgram = "/CIDInit /ProcSet findresource begin\n" |
| 458 | . "12 dict begin\n" |
| 459 | . "begincmap\n" |
| 460 | . "/CIDSystemInfo << /Registry (Adobe) /Ordering (UCS) /Supplement 0 >> def\n" |
| 461 | . "/CMapName /Adobe-Identity-UCS def\n" |
| 462 | . "/CMapType 2 def\n" |
| 463 | . "1 begincodespacerange\n" |
| 464 | . "<0000> <FFFF>\n" |
| 465 | . "endcodespacerange\n" |
| 466 | . $cmapBlocks |
| 467 | . "endcmap\n" |
| 468 | . "CMap end\n" |
| 469 | . "end"; |
| 470 | $toUnicodeStream = new PdfStream(new PdfDictionary(), $cmapProgram); |
| 471 | $this->file->register($toUnicodeStream); |
| 472 | |
| 473 | // Type 0 font |
| 474 | $type0Font = new Type0Font( |
| 475 | $data->postScriptName, |
| 476 | new PdfArray([new PdfReference($cidFont->objectNumber)]), |
| 477 | 'Identity-H', |
| 478 | ); |
| 479 | $type0Font->toUnicode = new PdfReference($toUnicodeStream->objectNumber); |
| 480 | $this->file->register($type0Font); |
| 481 | |
| 482 | $this->fonts[$name] = $type0Font; |
| 483 | $ref = new PdfReference($type0Font->objectNumber); |
| 484 | |
| 485 | $corePage = $page instanceof Page ? $page->corePage() : $page; |
| 486 | if ($corePage !== null) { |
| 487 | $corePage->resources?->addFont($name, $ref); |
| 488 | } else { |
| 489 | foreach ($this->pages as $p) { |
| 490 | $p->resources?->addFont($name, $ref); |
| 491 | } |
| 492 | } |
| 493 | |
| 494 | return new Font( |
| 495 | $name, |
| 496 | $data->postScriptName, |
| 497 | $data, |
| 498 | unicodeToGid: $unicodeToGidSubset, |
| 499 | oldToNewGid: $cffGidMap, |
| 500 | ); |
| 501 | } |
| 502 | |
| 503 | /** |
| 504 | * Create a content stream, register it, and attach it to a page. |
| 505 | */ |
| 506 | public function addContentStream(CorePage|Page $page): ContentStream |
| 507 | { |
| 508 | $corePage = $page instanceof Page ? $page->corePage() : $page; |
| 509 | $cs = new ContentStream(); |
| 510 | $this->file->register($cs); |
| 511 | $corePage->contents[] = new PdfReference($cs->objectNumber); |
| 512 | $this->contentStreams[] = $cs; |
| 513 | return $cs; |
| 514 | } |
| 515 | |
| 516 | /** |
| 517 | * Add an image to a page as an XObject, using ImageParser to detect format. |
| 518 | * Returns the resource name (e.g. 'Im1') for use in content streams. |
| 519 | */ |
| 520 | public function addImage(string $path, CorePage|Page $page): string |
| 521 | { |
| 522 | $corePage = $page instanceof Page ? $page->corePage() : $page; |
| 523 | $info = ImageParser::parse($path); |
| 524 | // SVG is not a raster format. The image-metadata parser |
| 525 | // recognises it (so callers can read intrinsic dimensions |
| 526 | // for layout), but PDF can't reference SVG bytes as an |
| 527 | // Image XObject. Reject here so the caller (typically the |
| 528 | // HTML painter) catches and routes through the SVG painter |
| 529 | // instead. Matches the pre-SVG-parser behaviour where |
| 530 | // ImageParser threw on unknown bytes. |
| 531 | if ($info->format === 'svg') { |
| 532 | throw new \RuntimeException('SVG cannot be embedded as a raster image XObject; route through the SVG painter'); |
| 533 | } |
| 534 | $data = LocalFilesystem::readFile($path); |
| 535 | |
| 536 | $this->imageCounter++; |
| 537 | $name = 'Im' . $this->imageCounter; |
| 538 | |
| 539 | $dict = new PdfDictionary([ |
| 540 | 'Type' => new PdfName('XObject'), |
| 541 | 'Subtype' => new PdfName('Image'), |
| 542 | 'Width' => new PdfNumber($info->width), |
| 543 | 'Height' => new PdfNumber($info->height), |
| 544 | 'ColorSpace' => new PdfName($info->colorSpace), |
| 545 | 'BitsPerComponent' => new PdfNumber($info->bitsPerComponent), |
| 546 | ]); |
| 547 | |
| 548 | // Set the appropriate decode filter for pass-through image formats |
| 549 | match ($info->format) { |
| 550 | 'jpeg' => $dict->set('Filter', new PdfName('DCTDecode')), |
| 551 | 'jpeg2000' => $dict->set('Filter', new PdfName('JPXDecode')), |
| 552 | 'jbig2' => $dict->set('Filter', new PdfName('JBIG2Decode')), |
| 553 | default => null, |
| 554 | }; |
| 555 | |
| 556 | // PNG: extract the DEFLATE-compressed IDAT data and tell the |
| 557 | // PDF reader to FlateDecode it with the PNG-style predictor |
| 558 | // (15 = "PNG up", which PNG IDAT effectively uses). PDF |
| 559 | // doesn't natively grok the PNG container, so we strip the |
| 560 | // PNG wrapper but keep the compressed pixel data verbatim — |
| 561 | // no intermediate raw-RGB buffer needed. |
| 562 | // |
| 563 | // The fast pass-through path is gated on 8-bit; the indexed |
| 564 | // path handles sub-byte depths (1/2/4) by expanding packed |
| 565 | // palette indices into per-pixel RGB before re-flating. Other |
| 566 | // unsupported depths fall back to the raw-embed path the |
| 567 | // historical writer used; rendering is broken but the XObject |
| 568 | // still exists for refcount / metadata. |
| 569 | $smaskRef = null; |
| 570 | if ($info->format === 'png') { |
| 571 | $components = match ($info->colorSpace) { |
| 572 | 'DeviceGray' => 1, |
| 573 | 'DeviceCMYK' => 4, |
| 574 | default => 3, // DeviceRGB |
| 575 | }; |
| 576 | // Detect indexed (color type 3) — the parser maps its |
| 577 | // colourspace to DeviceRGB for metadata purposes but the |
| 578 | // IDAT data is palette indices, not RGB samples. Route |
| 579 | // through the indexed decoder so the palette lookup |
| 580 | // happens here instead of being misinterpreted as raw |
| 581 | // pixel data. |
| 582 | $pngColorType = strlen($data) >= 8 + 8 + 10 |
| 583 | && substr($data, 12, 4) === 'IHDR' |
| 584 | ? ord($data[8 + 8 + 9]) |
| 585 | : null; |
| 586 | // IHDR byte 12: 0 = no interlace, 1 = Adam7. |
| 587 | $pngInterlace = strlen($data) >= 8 + 8 + 13 |
| 588 | && substr($data, 12, 4) === 'IHDR' |
| 589 | ? ord($data[8 + 8 + 12]) |
| 590 | : 0; |
| 591 | if ($pngColorType === 3) { |
| 592 | $decoded = \Phpdftk\ImageMetadata\PngParser::decodeIndexedPng($data); |
| 593 | if ($decoded !== null) { |
| 594 | $colourCompressed = @gzcompress($decoded['colour']); |
| 595 | if ($colourCompressed !== false) { |
| 596 | $dict->set('Filter', new PdfName('FlateDecode')); |
| 597 | $dict->set('ColorSpace', new PdfName('DeviceRGB')); |
| 598 | // The decoded stream is per-pixel RGB at 8 bpc, |
| 599 | // even when the source PNG was 1/2/4-bit packed. |
| 600 | $dict->set('BitsPerComponent', new PdfNumber(8)); |
| 601 | $data = $colourCompressed; |
| 602 | if ($decoded['alpha'] !== null) { |
| 603 | $alphaCompressed = @gzcompress($decoded['alpha']); |
| 604 | if ($alphaCompressed !== false) { |
| 605 | $smaskDict = new PdfDictionary([ |
| 606 | 'Type' => new PdfName('XObject'), |
| 607 | 'Subtype' => new PdfName('Image'), |
| 608 | 'Width' => new PdfNumber($decoded['width']), |
| 609 | 'Height' => new PdfNumber($decoded['height']), |
| 610 | 'ColorSpace' => new PdfName('DeviceGray'), |
| 611 | 'BitsPerComponent' => new PdfNumber(8), |
| 612 | 'Filter' => new PdfName('FlateDecode'), |
| 613 | ]); |
| 614 | $smaskStream = new PdfStream($smaskDict, $alphaCompressed); |
| 615 | $this->file->register($smaskStream); |
| 616 | $smaskRef = new PdfReference($smaskStream->objectNumber); |
| 617 | } |
| 618 | } |
| 619 | } |
| 620 | } |
| 621 | } elseif ($info->hasAlpha && $info->bitsPerComponent === 8) { |
| 622 | // Color types 4 / 6 — decode pixel data fully, split |
| 623 | // into colour + alpha, emit alpha as SMask. Skips |
| 624 | // gzcompress on the alpha stream when zlib refuses |
| 625 | // (very-tiny images can produce empty streams) and |
| 626 | // falls back to a raw embed in that case. |
| 627 | $decoded = \Phpdftk\ImageMetadata\PngParser::decodeAlphaPng($data); |
| 628 | if ($decoded !== null) { |
| 629 | $colourCompressed = @gzcompress($decoded['colour']); |
| 630 | $alphaCompressed = @gzcompress($decoded['alpha']); |
| 631 | if ($colourCompressed !== false && $alphaCompressed !== false) { |
| 632 | $smaskDict = new PdfDictionary([ |
| 633 | 'Type' => new PdfName('XObject'), |
| 634 | 'Subtype' => new PdfName('Image'), |
| 635 | 'Width' => new PdfNumber($decoded['width']), |
| 636 | 'Height' => new PdfNumber($decoded['height']), |
| 637 | 'ColorSpace' => new PdfName('DeviceGray'), |
| 638 | 'BitsPerComponent' => new PdfNumber(8), |
| 639 | 'Filter' => new PdfName('FlateDecode'), |
| 640 | ]); |
| 641 | $smaskStream = new PdfStream($smaskDict, $alphaCompressed); |
| 642 | $this->file->register($smaskStream); |
| 643 | $smaskRef = new PdfReference($smaskStream->objectNumber); |
| 644 | $dict->set('Filter', new PdfName('FlateDecode')); |
| 645 | $data = $colourCompressed; |
| 646 | } |
| 647 | } |
| 648 | } elseif ($info->bitsPerComponent === 8 && $pngInterlace === 1) { |
| 649 | // PNG spec §8.2 — an Adam7 IDAT is seven sub-images, not |
| 650 | // scanlines, so PDF's `/Predictor 15` pass-through below |
| 651 | // cannot read it. Decode here and re-emit un-predicted. |
| 652 | $decoded = \Phpdftk\ImageMetadata\PngParser::decodeOpaquePng($data); |
| 653 | if ($decoded !== null) { |
| 654 | $recompressed = @gzcompress($decoded['colour']); |
| 655 | if ($recompressed !== false) { |
| 656 | $dict->set('Filter', new PdfName('FlateDecode')); |
| 657 | $data = $recompressed; |
| 658 | } |
| 659 | } |
| 660 | } elseif ($info->bitsPerComponent === 8) { |
| 661 | $idat = \Phpdftk\ImageMetadata\PngParser::extractIdatData($data); |
| 662 | if ($idat !== null) { |
| 663 | $dict->set('Filter', new PdfName('FlateDecode')); |
| 664 | $dict->set( |
| 665 | 'DecodeParms', |
| 666 | new PdfDictionary([ |
| 667 | 'Predictor' => new PdfNumber(15), |
| 668 | 'Colors' => new PdfNumber($components), |
| 669 | 'BitsPerComponent' => new PdfNumber(8), |
| 670 | 'Columns' => new PdfNumber($info->width), |
| 671 | ]), |
| 672 | ); |
| 673 | $data = $idat; |
| 674 | } |
| 675 | } |
| 676 | } |
| 677 | if ($smaskRef !== null) { |
| 678 | $dict->set('SMask', $smaskRef); |
| 679 | } |
| 680 | |
| 681 | // If the image has an embedded ICC profile, replace the color space |
| 682 | // with an ICCBased color space reference |
| 683 | if ($info->iccProfile !== null) { |
| 684 | $nComponents = match ($info->colorSpace) { |
| 685 | 'DeviceGray' => 1, |
| 686 | 'DeviceCMYK' => 4, |
| 687 | default => 3, // DeviceRGB |
| 688 | }; |
| 689 | $profileDict = new PdfDictionary([ |
| 690 | 'N' => new PdfNumber($nComponents), |
| 691 | ]); |
| 692 | $profileStream = new PdfStream($profileDict, $info->iccProfile); |
| 693 | $this->file->register($profileStream); |
| 694 | $profileRef = new PdfReference($profileStream->objectNumber); |
| 695 | $iccColorSpace = new ICCBased($profileRef); |
| 696 | $dict->set('ColorSpace', $iccColorSpace); |
| 697 | } |
| 698 | |
| 699 | $xObject = new PdfStream($dict, $data); |
| 700 | $this->file->register($xObject); |
| 701 | $ref = new PdfReference($xObject->objectNumber); |
| 702 | |
| 703 | // Add XObject resource to the page |
| 704 | if ($corePage->resources !== null) { |
| 705 | $corePage->resources->addXObject($name, $ref); |
| 706 | } |
| 707 | |
| 708 | return $name; |
| 709 | } |
| 710 | |
| 711 | /** |
| 712 | * @deprecated Use {@see PdfDoc::setOutline()} instead. This forwarder |
| 713 | * is retained for one minor release and will be removed. |
| 714 | */ |
| 715 | public function setOutline(Outline $outline): Outline |
| 716 | { |
| 717 | return $this->doc()->setOutline($outline); |
| 718 | } |
| 719 | |
| 720 | /** |
| 721 | * @deprecated Use {@see PdfDoc::addOutlineItem()} instead. This |
| 722 | * forwarder is retained for one minor release. |
| 723 | */ |
| 724 | public function addOutlineItem(OutlineItem $item): PdfReference |
| 725 | { |
| 726 | return $this->doc()->addOutlineItem($item); |
| 727 | } |
| 728 | |
| 729 | /** |
| 730 | * @deprecated Use {@see PdfDoc::setPageLabels()} instead. This |
| 731 | * forwarder is retained for one minor release. |
| 732 | * |
| 733 | * @param array<int, PageLabel> $labels |
| 734 | */ |
| 735 | public function setPageLabels(array $labels): void |
| 736 | { |
| 737 | $this->doc()->setPageLabels($labels); |
| 738 | } |
| 739 | |
| 740 | /** |
| 741 | * @deprecated Use {@see PdfDoc::setNamedDestinations()} instead. This |
| 742 | * forwarder is retained for one minor release. |
| 743 | * |
| 744 | * @param array<string, Destination> $destinations |
| 745 | */ |
| 746 | public function setNamedDestinations(array $destinations): void |
| 747 | { |
| 748 | $this->doc()->setNamedDestinations($destinations); |
| 749 | } |
| 750 | |
| 751 | /** |
| 752 | * Escape hatch to Level 0 — returns the underlying PdfFileWriter |
| 753 | * for direct object-model control. |
| 754 | */ |
| 755 | public function fileWriter(): PdfFileWriter |
| 756 | { |
| 757 | return $this->file; |
| 758 | } |
| 759 | |
| 760 | /** |
| 761 | * Register any arbitrary PdfObject (annotations, form fields, etc.). |
| 762 | */ |
| 763 | public function register(PdfObject $object): PdfReference |
| 764 | { |
| 765 | return $this->file->register($object); |
| 766 | } |
| 767 | |
| 768 | /** |
| 769 | * Add an image to a page as an XObject (internal — used by Writer\Page). |
| 770 | * |
| 771 | * @internal |
| 772 | * @return string Resource name (e.g. 'Im1') |
| 773 | */ |
| 774 | public function addImageInternal(string $path, CorePage $page): string |
| 775 | { |
| 776 | return $this->addImage($path, $page); |
| 777 | } |
| 778 | |
| 779 | /** |
| 780 | * Configure digital signing for this document. |
| 781 | * |
| 782 | * The signing lifecycle works in three phases: |
| 783 | * 1. **Placeholder:** A SignatureValue dictionary is emitted with a |
| 784 | * zeroed /Contents hex string large enough to hold the final |
| 785 | * PKCS#7 DER blob (`$placeholderBytes` controls the size). |
| 786 | * 2. **Byte-range:** After the full PDF is assembled, the /ByteRange |
| 787 | * array is patched to cover everything except the /Contents value |
| 788 | * itself, so the signature covers the entire file. |
| 789 | * 3. **Patch:** The Pkcs7Signer signs the byte-range data and the |
| 790 | * resulting DER is written into the /Contents placeholder. |
| 791 | * |
| 792 | * @see PdfFileWriter::setSigner() |
| 793 | */ |
| 794 | public function setSigner( |
| 795 | SignatureValue $signatureValue, |
| 796 | Pkcs7Signer $signer, |
| 797 | int $placeholderBytes = 8192, |
| 798 | ): void { |
| 799 | $this->file->setSigner($signatureValue, $signer, $placeholderBytes); |
| 800 | } |
| 801 | |
| 802 | /** |
| 803 | * Configure a TSA client for RFC 3161 timestamping. |
| 804 | * |
| 805 | * @see PdfFileWriter::setTsaClient() |
| 806 | */ |
| 807 | public function setTsaClient(TsaClient $tsaClient): void |
| 808 | { |
| 809 | $this->file->setTsaClient($tsaClient); |
| 810 | } |
| 811 | |
| 812 | /** |
| 813 | * Configure a document-level timestamp using a TSA client. |
| 814 | * |
| 815 | * @see PdfFileWriter::setTimestamper() |
| 816 | */ |
| 817 | public function setTimestamper( |
| 818 | SignatureValue $docTimeStamp, |
| 819 | TsaClient $tsaClient, |
| 820 | int $placeholderBytes = 16384, |
| 821 | ): void { |
| 822 | $this->file->setTimestamper($docTimeStamp, $tsaClient, $placeholderBytes); |
| 823 | } |
| 824 | |
| 825 | /** |
| 826 | * Configure encryption for the generated PDF. |
| 827 | * |
| 828 | * Registers the encrypt dictionary, and during generation all |
| 829 | * strings and streams are encrypted per-object with the correct |
| 830 | * key derivation. The /Encrypt reference is added to the trailer |
| 831 | * automatically. |
| 832 | * |
| 833 | * @see PdfEncryptor::aes128() |
| 834 | * @see PdfEncryptor::aes256() |
| 835 | * @see PdfEncryptor::rc4128() |
| 836 | */ |
| 837 | public function setEncryption(PdfEncryptor $encryptor): void |
| 838 | { |
| 839 | $this->file->setEncryption($encryptor); |
| 840 | } |
| 841 | |
| 842 | public function getPdfVersion(): PdfVersion |
| 843 | { |
| 844 | return $this->file->getPdfVersion(); |
| 845 | } |
| 846 | |
| 847 | public function setStrictVersionMode(bool $strict = true): void |
| 848 | { |
| 849 | $this->file->setStrictVersionMode($strict); |
| 850 | } |
| 851 | |
| 852 | public function setCeilingVersion(?PdfVersion $ceiling): void |
| 853 | { |
| 854 | $this->file->setCeilingVersion($ceiling); |
| 855 | } |
| 856 | |
| 857 | public function setDeprecationHandler(\Closure $handler): void |
| 858 | { |
| 859 | $this->file->setDeprecationHandler($handler); |
| 860 | } |
| 861 | |
| 862 | public function setStrictDeprecation(bool $strict = true): void |
| 863 | { |
| 864 | $this->file->setStrictDeprecation($strict); |
| 865 | } |
| 866 | |
| 867 | /** @return list<string> */ |
| 868 | public function getVersionWarnings(): array |
| 869 | { |
| 870 | return $this->file->getVersionWarnings(); |
| 871 | } |
| 872 | |
| 873 | /** |
| 874 | * Diagnostics for codepoints that were substituted with `?` because the |
| 875 | * font's encoding could not represent them. Empty when every glyph |
| 876 | * landed cleanly. Each entry names the font resource, the codepoint, |
| 877 | * and how many times it was requested. |
| 878 | * |
| 879 | * @return list<string> |
| 880 | */ |
| 881 | public function getEncodingWarnings(): array |
| 882 | { |
| 883 | $warnings = []; |
| 884 | foreach ($this->fontEncoders as $resourceName => $encoder) { |
| 885 | $missing = $encoder->getMissingCodepoints(); |
| 886 | if ($missing === []) { |
| 887 | continue; |
| 888 | } |
| 889 | $counts = array_count_values($missing); |
| 890 | foreach ($counts as $cp => $count) { |
| 891 | $warnings[] = sprintf( |
| 892 | 'Font %s: codepoint U+%04X has no WinAnsi mapping (substituted ? %dx)', |
| 893 | $resourceName, |
| 894 | $cp, |
| 895 | $count, |
| 896 | ); |
| 897 | } |
| 898 | } |
| 899 | return $warnings; |
| 900 | } |
| 901 | |
| 902 | /** |
| 903 | * Enable or disable linearized (web-optimized) PDF output. |
| 904 | * |
| 905 | * When enabled, the generated PDF places the first page's objects at |
| 906 | * the front of the file, allowing a viewer to display it before |
| 907 | * downloading the rest (ISO 32000-2 Annex F). |
| 908 | */ |
| 909 | public function setLinearized(bool $linearized = true): void |
| 910 | { |
| 911 | $this->linearized = $linearized; |
| 912 | } |
| 913 | |
| 914 | /** |
| 915 | * Set one or more conformance profiles (e.g. PDF/A-1b, PDF/UA-1). |
| 916 | * |
| 917 | * When set, `generate()` will: |
| 918 | * 1. Auto-inject XMP identification metadata (if not already present) |
| 919 | * 2. Pin the PDF version to the profile minimum |
| 920 | * 3. Run all applicable constraint checks |
| 921 | * 4. In strict mode (default): throw ConformanceException on errors |
| 922 | * 5. In lenient mode: collect results in getConformanceResults() |
| 923 | * |
| 924 | * @param bool $strict Throw on conformance errors (default true) |
| 925 | */ |
| 926 | public function setConformance(ConformanceProfile $profile, bool $strict = true): void |
| 927 | { |
| 928 | $this->conformanceMode = new ConformanceMode([$profile], $strict); |
| 929 | } |
| 930 | |
| 931 | /** |
| 932 | * Set multiple conformance profiles at once (e.g. PDF/A-2a + PDF/UA-1). |
| 933 | * |
| 934 | * @param ConformanceProfile[] $profiles |
| 935 | * @param bool $strict Throw on conformance errors (default true) |
| 936 | */ |
| 937 | public function setConformanceProfiles(array $profiles, bool $strict = true): void |
| 938 | { |
| 939 | $this->conformanceMode = new ConformanceMode($profiles, $strict); |
| 940 | } |
| 941 | |
| 942 | /** |
| 943 | * Run conformance checks without generating the PDF. |
| 944 | * |
| 945 | * @return list<ConformanceResult> |
| 946 | */ |
| 947 | public function checkConformance(): array |
| 948 | { |
| 949 | if ($this->conformanceMode === null) { |
| 950 | return []; |
| 951 | } |
| 952 | |
| 953 | $inspector = new WriterDocumentInspector( |
| 954 | $this->catalog, |
| 955 | $this->file, |
| 956 | $this->fonts, |
| 957 | ); |
| 958 | |
| 959 | $validator = new ConformanceValidator(); |
| 960 | return $validator->validateAll($inspector, $this->conformanceMode->profiles); |
| 961 | } |
| 962 | |
| 963 | /** |
| 964 | * Get the conformance results from the last generate() call. |
| 965 | * |
| 966 | * @return list<ConformanceResult> |
| 967 | */ |
| 968 | public function getConformanceResults(): array |
| 969 | { |
| 970 | return $this->conformanceResults; |
| 971 | } |
| 972 | |
| 973 | /** |
| 974 | * Generate the complete PDF as a binary string. |
| 975 | */ |
| 976 | public function generate(): string |
| 977 | { |
| 978 | if ($this->conformanceMode !== null) { |
| 979 | $this->applyConformance(); |
| 980 | } |
| 981 | |
| 982 | if ($this->linearized) { |
| 983 | return $this->file->generateLinearized($this->collectFirstPageObjectNumbers()); |
| 984 | } |
| 985 | return $this->file->generate(); |
| 986 | } |
| 987 | |
| 988 | /** |
| 989 | * Alias for {@see generate()} — returns the raw PDF bytes as a string. |
| 990 | */ |
| 991 | public function toBytes(): string |
| 992 | { |
| 993 | return $this->generate(); |
| 994 | } |
| 995 | |
| 996 | /** |
| 997 | * Write the generated PDF to an open stream resource. |
| 998 | * |
| 999 | * @param resource $stream |
| 1000 | */ |
| 1001 | public function writeTo($stream): int |
| 1002 | { |
| 1003 | if (!is_resource($stream)) { |
| 1004 | throw new \InvalidArgumentException( |
| 1005 | 'PdfWriter::writeTo() expects an open stream resource', |
| 1006 | ); |
| 1007 | } |
| 1008 | $pdf = $this->generate(); |
| 1009 | $written = fwrite($stream, $pdf); |
| 1010 | if ($written === false) { |
| 1011 | throw new \RuntimeException('Failed to write PDF bytes to stream'); |
| 1012 | } |
| 1013 | return $written; |
| 1014 | } |
| 1015 | |
| 1016 | /** |
| 1017 | * Write the PDF to a file, creating parent directories as needed. |
| 1018 | */ |
| 1019 | public function save(string $path): void |
| 1020 | { |
| 1021 | $pdf = $this->generate(); |
| 1022 | LocalFilesystem::writeFile($path, $pdf, createDirectories: true); |
| 1023 | } |
| 1024 | |
| 1025 | /** |
| 1026 | * Collect object numbers belonging to the first page for linearization. |
| 1027 | * |
| 1028 | * Includes the catalog, page tree, first page, its content streams, |
| 1029 | * and all fonts/images referenced by the first page's resources. |
| 1030 | * |
| 1031 | * @return list<int> |
| 1032 | */ |
| 1033 | private function collectFirstPageObjectNumbers(): array |
| 1034 | { |
| 1035 | $nums = []; |
| 1036 | |
| 1037 | // Catalog and page tree are always first-page objects |
| 1038 | $nums[] = $this->catalog->objectNumber; |
| 1039 | $nums[] = $this->pageTree->objectNumber; |
| 1040 | |
| 1041 | // First page and its content streams |
| 1042 | if (!empty($this->pages)) { |
| 1043 | $firstPage = $this->pages[0]; |
| 1044 | $nums[] = $firstPage->objectNumber; |
| 1045 | |
| 1046 | foreach ($firstPage->contents as $ref) { |
| 1047 | $nums[] = $ref->objectNumber; |
| 1048 | } |
| 1049 | |
| 1050 | // Fonts and images registered on the first page's resources |
| 1051 | if ($firstPage->resources !== null) { |
| 1052 | foreach ($firstPage->resources->font as $ref) { |
| 1053 | $nums[] = $ref->objectNumber; |
| 1054 | } |
| 1055 | foreach ($firstPage->resources->xObject as $ref) { |
| 1056 | $nums[] = $ref->objectNumber; |
| 1057 | } |
| 1058 | } |
| 1059 | } |
| 1060 | |
| 1061 | // Info dict if present |
| 1062 | if ($this->file->getInfo() !== null) { |
| 1063 | $nums[] = $this->file->getInfo()->objectNumber; |
| 1064 | } |
| 1065 | |
| 1066 | return $nums; |
| 1067 | } |
| 1068 | |
| 1069 | /** |
| 1070 | * @deprecated Use {@see PdfDoc::setMetadata()} instead. This |
| 1071 | * forwarder is retained for one minor release. |
| 1072 | */ |
| 1073 | public function setMetadata(string $xmpXml): void |
| 1074 | { |
| 1075 | $this->doc()->setMetadata($xmpXml); |
| 1076 | } |
| 1077 | |
| 1078 | /** |
| 1079 | * @deprecated Use {@see PdfDoc::syncInfoToMetadata()} instead. This |
| 1080 | * forwarder is retained for one minor release. |
| 1081 | */ |
| 1082 | public function syncInfoToMetadata(): void |
| 1083 | { |
| 1084 | $this->doc()->syncInfoToMetadata(); |
| 1085 | } |
| 1086 | |
| 1087 | /** |
| 1088 | * Lazily-constructed PdfDoc view over this writer, used by the |
| 1089 | * deprecated forwarding stubs above. New code should use PdfDoc |
| 1090 | * directly. |
| 1091 | */ |
| 1092 | private function doc(): PdfDoc |
| 1093 | { |
| 1094 | return $this->cachedDoc ??= PdfDoc::wrap($this); |
| 1095 | } |
| 1096 | |
| 1097 | // ----------------------------------------------------------------------- |
| 1098 | // Private helpers |
| 1099 | // ----------------------------------------------------------------------- |
| 1100 | |
| 1101 | /** |
| 1102 | * Apply conformance: auto-inject XMP, pin version, validate. |
| 1103 | */ |
| 1104 | private function applyConformance(): void |
| 1105 | { |
| 1106 | $mode = $this->conformanceMode; |
| 1107 | |
| 1108 | foreach ($mode->profiles as $profile) { |
| 1109 | // Pin PDF version to profile minimum |
| 1110 | $required = $profile->getPdfVersion(); |
| 1111 | if ($required->isGreaterThan($this->file->getPdfVersion())) { |
| 1112 | $this->file->setVersion($required); |
| 1113 | } |
| 1114 | |
| 1115 | // Auto-inject XMP identification if not already present |
| 1116 | if (!$this->catalog->metadata) { |
| 1117 | $info = $this->file->getInfo(); |
| 1118 | $xmpWriter = new ConformanceXmpWriter(); |
| 1119 | $xmp = $xmpWriter->buildXmp( |
| 1120 | $profile, |
| 1121 | title: $info?->title->value ?? '', |
| 1122 | creator: $info?->author->value ?? '', |
| 1123 | producer: $info?->producer->value ?? 'phpdftk', |
| 1124 | ); |
| 1125 | $this->setMetadata($xmp); |
| 1126 | } |
| 1127 | } |
| 1128 | |
| 1129 | // Run validation |
| 1130 | $this->conformanceResults = $this->checkConformance(); |
| 1131 | |
| 1132 | // In strict mode, throw on any non-compliant result |
| 1133 | if ($mode->strict) { |
| 1134 | $failures = array_filter( |
| 1135 | $this->conformanceResults, |
| 1136 | static fn(ConformanceResult $r) => !$r->isCompliant, |
| 1137 | ); |
| 1138 | if ($failures !== []) { |
| 1139 | throw new ConformanceException(array_values($failures)); |
| 1140 | } |
| 1141 | } |
| 1142 | } |
| 1143 | |
| 1144 | private function embedTrueTypeFont(TrueTypeFont $font): void |
| 1145 | { |
| 1146 | $data = $font->parsedFontData; |
| 1147 | |
| 1148 | // 1. Font program stream — subset if possible |
| 1149 | $fontBytes = $data->fontBytes; |
| 1150 | if (!empty($data->fullUnicodeToGid)) { |
| 1151 | // Subset to only WinAnsi-mapped glyphs |
| 1152 | $glyphIds = []; |
| 1153 | foreach ($data->unicodeMap as $unicode) { |
| 1154 | $gid = $data->fullUnicodeToGid[$unicode] ?? null; |
| 1155 | if ($gid !== null) { |
| 1156 | $glyphIds[] = $gid; |
| 1157 | } |
| 1158 | } |
| 1159 | if (!empty($glyphIds)) { |
| 1160 | $fontBytes = (new TrueTypeSubsetter())->subset($fontBytes, $glyphIds, $data->fullUnicodeToGid); |
| 1161 | } |
| 1162 | } |
| 1163 | $streamDict = new PdfDictionary(['Length1' => new PdfNumber(strlen($fontBytes))]); |
| 1164 | $fontStream = new PdfStream($streamDict, $fontBytes); |
| 1165 | $this->file->register($fontStream); |
| 1166 | |
| 1167 | // 2. FontDescriptor |
| 1168 | $descriptor = new FontDescriptor(new PdfName($data->postScriptName)); |
| 1169 | $descriptor->flags = $data->flags; |
| 1170 | $descriptor->fontBBox = new PdfArray([ |
| 1171 | new PdfNumber($data->fontBBox[0]), |
| 1172 | new PdfNumber($data->fontBBox[1]), |
| 1173 | new PdfNumber($data->fontBBox[2]), |
| 1174 | new PdfNumber($data->fontBBox[3]), |
| 1175 | ]); |
| 1176 | $descriptor->italicAngle = $data->italicAngle; |
| 1177 | $descriptor->ascent = $data->ascent; |
| 1178 | $descriptor->descent = $data->descent; |
| 1179 | $descriptor->capHeight = $data->capHeight; |
| 1180 | $descriptor->xHeight = $data->xHeight; |
| 1181 | $descriptor->stemV = $data->stemV; |
| 1182 | $descriptor->fontFile2 = new PdfReference($fontStream->objectNumber); |
| 1183 | $this->file->register($descriptor); |
| 1184 | |
| 1185 | // 3. ToUnicode CMap stream |
| 1186 | $cmapStream = new PdfStream(new PdfDictionary(), $this->buildToUnicodeCMap($data->unicodeMap)); |
| 1187 | $this->file->register($cmapStream); |
| 1188 | |
| 1189 | // 4. Wire back to font |
| 1190 | $font->fontDescriptor = new PdfReference($descriptor->objectNumber); |
| 1191 | $font->toUnicode = new PdfReference($cmapStream->objectNumber); |
| 1192 | $font->encoding = new PdfName('WinAnsiEncoding'); |
| 1193 | } |
| 1194 | |
| 1195 | /** |
| 1196 | * Embed a custom Type 1 font with its font program, descriptor, and ToUnicode CMap. |
| 1197 | */ |
| 1198 | private function embedType1Font(Type1Font $font): void |
| 1199 | { |
| 1200 | $data = $font->parsedFontData; |
| 1201 | |
| 1202 | // 1. Font program stream (Type1FontFile with /Length1, /Length2, /Length3) |
| 1203 | $fontStream = new Type1FontFile( |
| 1204 | $data->fontBytes, |
| 1205 | $data->length1, |
| 1206 | $data->length2, |
| 1207 | $data->length3, |
| 1208 | ); |
| 1209 | $this->file->register($fontStream); |
| 1210 | |
| 1211 | // 2. FontDescriptor |
| 1212 | $descriptor = new FontDescriptor(new PdfName($data->postScriptName)); |
| 1213 | $descriptor->flags = $data->flags; |
| 1214 | $descriptor->fontBBox = new PdfArray([ |
| 1215 | new PdfNumber($data->fontBBox[0]), |
| 1216 | new PdfNumber($data->fontBBox[1]), |
| 1217 | new PdfNumber($data->fontBBox[2]), |
| 1218 | new PdfNumber($data->fontBBox[3]), |
| 1219 | ]); |
| 1220 | $descriptor->italicAngle = $data->italicAngle; |
| 1221 | $descriptor->ascent = $data->ascent; |
| 1222 | $descriptor->descent = $data->descent; |
| 1223 | $descriptor->capHeight = $data->capHeight; |
| 1224 | $descriptor->xHeight = $data->xHeight; |
| 1225 | $descriptor->stemV = $data->stemV; |
| 1226 | $descriptor->fontFile = new PdfReference($fontStream->objectNumber); |
| 1227 | $this->file->register($descriptor); |
| 1228 | |
| 1229 | // 3. ToUnicode CMap stream |
| 1230 | if (!empty($data->unicodeMap)) { |
| 1231 | $cmapStream = new PdfStream(new PdfDictionary(), $this->buildToUnicodeCMap($data->unicodeMap)); |
| 1232 | $this->file->register($cmapStream); |
| 1233 | $font->toUnicode = new PdfReference($cmapStream->objectNumber); |
| 1234 | } |
| 1235 | |
| 1236 | // 4. Wire back to font |
| 1237 | $font->fontDescriptor = new PdfReference($descriptor->objectNumber); |
| 1238 | } |
| 1239 | |
| 1240 | /** @param array<int, int> $unicodeMap */ |
| 1241 | private function buildToUnicodeCMap(array $unicodeMap): string |
| 1242 | { |
| 1243 | ksort($unicodeMap); |
| 1244 | $entries = []; |
| 1245 | foreach ($unicodeMap as $byte => $unicode) { |
| 1246 | $entries[] = sprintf('<%02X> <%04X>', $byte, $unicode); |
| 1247 | } |
| 1248 | |
| 1249 | // PDF spec: max 100 entries per beginbfchar block |
| 1250 | $chunks = array_chunk($entries, 100); |
| 1251 | $blocks = ''; |
| 1252 | foreach ($chunks as $chunk) { |
| 1253 | $blocks .= count($chunk) . " beginbfchar\n" |
| 1254 | . implode("\n", $chunk) . "\n" |
| 1255 | . "endbfchar\n"; |
| 1256 | } |
| 1257 | |
| 1258 | return "/CIDInit /ProcSet findresource begin\n" |
| 1259 | . "12 dict begin\n" |
| 1260 | . "begincmap\n" |
| 1261 | . "/CIDSystemInfo << /Registry (Adobe) /Ordering (UCS) /Supplement 0 >> def\n" |
| 1262 | . "/CMapName /Adobe-Identity-UCS def\n" |
| 1263 | . "/CMapType 2 def\n" |
| 1264 | . "1 begincodespacerange\n" |
| 1265 | . "<20> <FF>\n" |
| 1266 | . "endcodespacerange\n" |
| 1267 | . $blocks |
| 1268 | . "endcmap\n" |
| 1269 | . "CMap end\n" |
| 1270 | . "end"; |
| 1271 | } |
| 1272 | } |