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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | namespace Phpdftk\Pdf\Writer; |
| 6 | |
| 7 | use Phpdftk\Barcode\BarcodeOptions; |
| 8 | use Phpdftk\Barcode\BarcodeRenderer; |
| 9 | use Phpdftk\Barcode\Symbology; |
| 10 | use Phpdftk\Filesystem\LocalFilesystem; |
| 11 | use Phpdftk\Geometry\Point; |
| 12 | use Phpdftk\Geometry\Rectangle; |
| 13 | use Phpdftk\Pdf\Core\Annotation\Annotation as CoreAnnotation; |
| 14 | use Phpdftk\Pdf\Core\Annotation\BorderStyle; |
| 15 | use Phpdftk\Pdf\Core\Annotation\CaretAnnotation; |
| 16 | use Phpdftk\Pdf\Core\Annotation\CircleAnnotation; |
| 17 | use Phpdftk\Pdf\Core\Annotation\FreeTextAnnotation; |
| 18 | use Phpdftk\Pdf\Core\Annotation\HighlightAnnotation; |
| 19 | use Phpdftk\Pdf\Core\Annotation\InkAnnotation; |
| 20 | use Phpdftk\Pdf\Core\Annotation\LineAnnotation; |
| 21 | use Phpdftk\Pdf\Core\Annotation\LinkAnnotation; |
| 22 | use Phpdftk\Pdf\Core\Annotation\PolygonAnnotation; |
| 23 | use Phpdftk\Pdf\Core\Annotation\PolyLineAnnotation; |
| 24 | use Phpdftk\Pdf\Core\Annotation\SquareAnnotation; |
| 25 | use Phpdftk\Pdf\Core\Annotation\SquigglyAnnotation; |
| 26 | use Phpdftk\Pdf\Core\Annotation\StampAnnotation; |
| 27 | use Phpdftk\Pdf\Core\Annotation\StrikeOutAnnotation; |
| 28 | use Phpdftk\Pdf\Core\Annotation\TextAnnotation; |
| 29 | use Phpdftk\Pdf\Core\Annotation\UnderlineAnnotation; |
| 30 | use Phpdftk\Pdf\Core\Annotation\MovieAnnotation; |
| 31 | use Phpdftk\Pdf\Core\Annotation\SoundAnnotation; |
| 32 | use Phpdftk\Pdf\Core\Annotation\ThreeDAnnotation; |
| 33 | use Phpdftk\Pdf\Core\Annotation\WatermarkAnnotation; |
| 34 | use Phpdftk\Pdf\Core\Document\Destination; |
| 35 | use Phpdftk\Pdf\Core\Document\Info; |
| 36 | use Phpdftk\Pdf\Core\Document\Page as CorePage; |
| 37 | use Phpdftk\Pdf\Core\Document\MetadataStream; |
| 38 | use Phpdftk\Pdf\Core\Document\NameTree; |
| 39 | use Phpdftk\Pdf\Core\Document\Outline; |
| 40 | use Phpdftk\Pdf\Core\Document\OutlineItem; |
| 41 | use Phpdftk\Pdf\Core\Document\PageLabel; |
| 42 | use Phpdftk\Pdf\Core\Document\OCG; |
| 43 | use Phpdftk\Pdf\Core\Document\OCPropertiesDict; |
| 44 | use Phpdftk\Pdf\Core\Document\ViewerPreferences; |
| 45 | use Phpdftk\Pdf\Core\File\PdfFileWriter; |
| 46 | use Phpdftk\Pdf\Core\Content\ContentStream; |
| 47 | use Phpdftk\Pdf\Core\Content\Resources; |
| 48 | use Phpdftk\Pdf\Core\FileSpec\EmbeddedFile; |
| 49 | use Phpdftk\Pdf\Core\FileSpec\FileSpec; |
| 50 | use Phpdftk\Pdf\Core\Graphics\ColorSpace\Separation; |
| 51 | use Phpdftk\Pdf\Core\Graphics\Function\FunctionType2; |
| 52 | use Phpdftk\Pdf\Core\Graphics\Function\FunctionType3; |
| 53 | use Phpdftk\Pdf\Core\Graphics\Pattern\ShadingPattern; |
| 54 | use Phpdftk\Pdf\Core\Graphics\Shading\ShadingType2; |
| 55 | use Phpdftk\Pdf\Core\Graphics\Shading\ShadingType3; |
| 56 | use Phpdftk\Pdf\Core\Annotation\WidgetAnnotation; |
| 57 | use Phpdftk\Pdf\Core\Graphics\XObject\FormXObject; |
| 58 | use Phpdftk\Pdf\Core\Interactive\Form\AcroForm; |
| 59 | use Phpdftk\Pdf\Core\Interactive\Form\ButtonField; |
| 60 | use Phpdftk\Pdf\Core\Interactive\Form\ChoiceField; |
| 61 | use Phpdftk\Pdf\Core\Interactive\Form\SignatureField; |
| 62 | use Phpdftk\Pdf\Core\Interactive\Form\TextField; |
| 63 | use Phpdftk\Pdf\Writer\Form\CheckboxOptions; |
| 64 | use Phpdftk\Pdf\Writer\Form\ChoiceFieldOptions; |
| 65 | use Phpdftk\Pdf\Writer\Form\TextFieldOptions; |
| 66 | use Phpdftk\Pdf\Core\PdfArray; |
| 67 | use Phpdftk\Pdf\Core\PdfDictionary; |
| 68 | use Phpdftk\Pdf\Core\PdfName; |
| 69 | use Phpdftk\Pdf\Core\PdfNumber; |
| 70 | use Phpdftk\Pdf\Core\PdfReference; |
| 71 | use Phpdftk\Pdf\Core\PdfStream; |
| 72 | use Phpdftk\Pdf\Core\PdfString; |
| 73 | use Phpdftk\Pdf\Core\PdfVersion; |
| 74 | |
| 75 | /** |
| 76 | * Level 2 — friendly API over the PDF document object model. |
| 77 | * |
| 78 | * `PdfDoc` wraps a {@see PdfWriter} and exposes one method per "thing |
| 79 | * a user wants to put in a document": pages, outlines, page labels, |
| 80 | * named destinations, info/metadata. Later phases extend this with |
| 81 | * annotation builders, form field builders, file attachments, viewer |
| 82 | * preferences, action factories, layers, gradients, and more. |
| 83 | * |
| 84 | * The split between `PdfDoc` and `PdfWriter` is: |
| 85 | * - `PdfDoc` is about *what is in the document* (Catalog conveniences) |
| 86 | * - `PdfWriter` is about *how bytes get written* (fonts, images, |
| 87 | * content streams, signing, encryption, conformance, save) |
| 88 | * |
| 89 | * Drop down to the underlying {@see PdfWriter} via {@see writer()} |
| 90 | * when you need direct byte/resource control (custom fonts, |
| 91 | * encryption, etc.). |
| 92 | * |
| 93 | * @api |
| 94 | */ |
| 95 | class PdfDoc |
| 96 | { |
| 97 | private PdfWriter $writer; |
| 98 | |
| 99 | /** Lazily-created OCPropertiesDict, shared across {@see addLayer()} calls. */ |
| 100 | private ?OCPropertiesDict $ocPropertiesDict = null; |
| 101 | |
| 102 | /** Lazily-created AcroForm, shared across all form-field builders. */ |
| 103 | private ?AcroForm $acroForm = null; |
| 104 | |
| 105 | public function __construct( |
| 106 | bool $compressStreams = true, |
| 107 | PdfVersion|string $version = PdfFileWriter::DEFAULT_PDF_VERSION, |
| 108 | ) { |
| 109 | $this->writer = new PdfWriter($compressStreams, $version); |
| 110 | } |
| 111 | |
| 112 | /** |
| 113 | * Wrap an existing PdfWriter — typically one already configured |
| 114 | * with conformance, signing, or encryption — and expose the |
| 115 | * friendly API on top of it. |
| 116 | */ |
| 117 | public static function wrap(PdfWriter $writer): self |
| 118 | { |
| 119 | $instance = (new \ReflectionClass(self::class))->newInstanceWithoutConstructor(); |
| 120 | $instance->writer = $writer; |
| 121 | return $instance; |
| 122 | } |
| 123 | |
| 124 | /** |
| 125 | * Escape hatch: the underlying PdfWriter for byte/resource control. |
| 126 | */ |
| 127 | public function writer(): PdfWriter |
| 128 | { |
| 129 | return $this->writer; |
| 130 | } |
| 131 | |
| 132 | /** |
| 133 | * Add a new page. Friendly wrapper that returns the same |
| 134 | * {@see Page} handle as PdfWriter::addPage(). |
| 135 | */ |
| 136 | public function addPage(Rectangle|float $widthOrRect = 612, float $height = 792): Page |
| 137 | { |
| 138 | return $this->writer->addPage($widthOrRect, $height); |
| 139 | } |
| 140 | |
| 141 | // ----------------------------------------------------------------------- |
| 142 | // Document metadata (Info dict + XMP) |
| 143 | // ----------------------------------------------------------------------- |
| 144 | |
| 145 | public function setInfo(Info $info): self |
| 146 | { |
| 147 | $this->writer->fileWriter()->setInfo($info); |
| 148 | return $this; |
| 149 | } |
| 150 | |
| 151 | public function setTitle(string $title): self |
| 152 | { |
| 153 | $this->ensureInfo()->title = new PdfString($title); |
| 154 | return $this; |
| 155 | } |
| 156 | |
| 157 | public function setAuthor(string $author): self |
| 158 | { |
| 159 | $this->ensureInfo()->author = new PdfString($author); |
| 160 | return $this; |
| 161 | } |
| 162 | |
| 163 | public function setSubject(string $subject): self |
| 164 | { |
| 165 | $this->ensureInfo()->subject = new PdfString($subject); |
| 166 | return $this; |
| 167 | } |
| 168 | |
| 169 | public function setKeywords(string $keywords): self |
| 170 | { |
| 171 | $this->ensureInfo()->keywords = new PdfString($keywords); |
| 172 | return $this; |
| 173 | } |
| 174 | |
| 175 | public function setCreator(string $creator): self |
| 176 | { |
| 177 | $this->ensureInfo()->creator = new PdfString($creator); |
| 178 | return $this; |
| 179 | } |
| 180 | |
| 181 | private function ensureInfo(): Info |
| 182 | { |
| 183 | $info = $this->writer->fileWriter()->getInfo(); |
| 184 | if ($info === null) { |
| 185 | $info = new Info(); |
| 186 | $this->writer->fileWriter()->setInfo($info); |
| 187 | } |
| 188 | return $info; |
| 189 | } |
| 190 | |
| 191 | /** |
| 192 | * Attach an XMP metadata stream to the document catalog. |
| 193 | */ |
| 194 | public function setMetadata(string $xmpXml): self |
| 195 | { |
| 196 | $metadataStream = new MetadataStream($xmpXml); |
| 197 | $this->writer->register($metadataStream); |
| 198 | $this->writer->getCatalog()->metadata = new PdfReference($metadataStream->objectNumber); |
| 199 | return $this; |
| 200 | } |
| 201 | |
| 202 | /** |
| 203 | * Build and attach XMP metadata from the document's Info dictionary. |
| 204 | * |
| 205 | * Syncs Title, Author, Subject, Creator, Producer from the Info |
| 206 | * dict into XMP properties (dc:title, dc:creator, dc:description, |
| 207 | * xmp:CreatorTool, pdf:Producer) and attaches the result as a |
| 208 | * MetadataStream on the Catalog. |
| 209 | */ |
| 210 | public function syncInfoToMetadata(): self |
| 211 | { |
| 212 | $info = $this->writer->fileWriter()->getInfo(); |
| 213 | if ($info === null) { |
| 214 | return $this; |
| 215 | } |
| 216 | |
| 217 | $packet = \Phpdftk\Xmp\XmpPacket::create(); |
| 218 | if ($info->title !== null) { |
| 219 | $packet = $packet->set('dc:title', $info->title->value); |
| 220 | } |
| 221 | if ($info->author !== null) { |
| 222 | $packet = $packet->set('dc:creator', $info->author->value); |
| 223 | } |
| 224 | if ($info->subject !== null) { |
| 225 | $packet = $packet->set('dc:description', $info->subject->value); |
| 226 | } |
| 227 | if ($info->creator !== null) { |
| 228 | $packet = $packet->set('xmp:CreatorTool', $info->creator->value); |
| 229 | } |
| 230 | if ($info->producer !== null) { |
| 231 | $packet = $packet->set('pdf:Producer', $info->producer->value); |
| 232 | } |
| 233 | |
| 234 | $xmpXml = (new \Phpdftk\Xmp\XmpWriter())->serialize($packet); |
| 235 | return $this->setMetadata($xmpXml); |
| 236 | } |
| 237 | |
| 238 | // ----------------------------------------------------------------------- |
| 239 | // Form fields |
| 240 | // ----------------------------------------------------------------------- |
| 241 | |
| 242 | /** |
| 243 | * Add a single-line (or multi-line) text input to the page. The |
| 244 | * field is registered in the document's AcroForm and a Widget |
| 245 | * annotation is attached to the page's `/Annots` array. |
| 246 | * |
| 247 | * Field flags (`/Ff`) are derived from {@see TextFieldOptions}: |
| 248 | * - required → bit 2 (0x0002) |
| 249 | * - readOnly → bit 1 (0x0001) |
| 250 | * - multiline → bit 13 (0x1000) |
| 251 | * - password → bit 14 (0x2000) |
| 252 | */ |
| 253 | public function addTextField( |
| 254 | string $name, |
| 255 | Page|CorePage $page, |
| 256 | Rectangle $rect, |
| 257 | ?TextFieldOptions $options = null, |
| 258 | ): TextField { |
| 259 | $options ??= new TextFieldOptions(); |
| 260 | $field = new TextField(); |
| 261 | $field->t = new PdfString($name); |
| 262 | $field->da = new PdfString($options->defaultAppearance); |
| 263 | $field->ff = $this->computeFieldFlags($options->required, $options->readOnly) |
| 264 | | ($options->multiline ? 1 << 12 : 0) |
| 265 | | ($options->password ? 1 << 13 : 0); |
| 266 | if ($options->maxLength !== null) { |
| 267 | $field->maxLen = $options->maxLength; |
| 268 | } |
| 269 | if ($options->defaultValue !== null) { |
| 270 | $field->v = new PdfString($options->defaultValue); |
| 271 | $field->dv = new PdfString($options->defaultValue); |
| 272 | } |
| 273 | $this->attachFieldWidget($page, $rect, $field); |
| 274 | return $field; |
| 275 | } |
| 276 | |
| 277 | /** |
| 278 | * Add a checkbox to the page. The export value (the string |
| 279 | * recorded as the field's `/V` when checked) defaults to `Yes`. |
| 280 | */ |
| 281 | public function addCheckbox( |
| 282 | string $name, |
| 283 | Page|CorePage $page, |
| 284 | Rectangle $rect, |
| 285 | ?CheckboxOptions $options = null, |
| 286 | ): ButtonField { |
| 287 | $options ??= new CheckboxOptions(); |
| 288 | $field = new ButtonField(); |
| 289 | $field->t = new PdfString($name); |
| 290 | $field->ff = $this->computeFieldFlags($options->required, $options->readOnly); |
| 291 | if ($options->defaultChecked) { |
| 292 | $field->v = new PdfName($options->onValue); |
| 293 | $field->dv = new PdfName($options->onValue); |
| 294 | } else { |
| 295 | $field->v = new PdfName('Off'); |
| 296 | $field->dv = new PdfName('Off'); |
| 297 | } |
| 298 | $this->attachFieldWidget($page, $rect, $field); |
| 299 | return $field; |
| 300 | } |
| 301 | |
| 302 | /** |
| 303 | * Add a drop-down (combo) or list-box choice field. `$options` |
| 304 | * carries the list of allowed `[value, label]` choices and the |
| 305 | * usual required / read-only flags. |
| 306 | */ |
| 307 | public function addChoiceField( |
| 308 | string $name, |
| 309 | Page|CorePage $page, |
| 310 | Rectangle $rect, |
| 311 | ChoiceFieldOptions $options, |
| 312 | ): ChoiceField { |
| 313 | $field = new ChoiceField(); |
| 314 | $field->t = new PdfString($name); |
| 315 | $field->ff = $this->computeFieldFlags($options->required, $options->readOnly) |
| 316 | | ($options->combo ? 1 << 17 : 0) |
| 317 | | ($options->editable ? 1 << 18 : 0) |
| 318 | | ($options->sort ? 1 << 19 : 0) |
| 319 | | ($options->multiSelect ? 1 << 21 : 0); |
| 320 | |
| 321 | $optItems = []; |
| 322 | foreach ($options->choices as $choice) { |
| 323 | if (is_array($choice)) { |
| 324 | $optItems[] = new PdfArray([ |
| 325 | new PdfString($choice[0]), |
| 326 | new PdfString($choice[1]), |
| 327 | ]); |
| 328 | } else { |
| 329 | $optItems[] = new PdfString($choice); |
| 330 | } |
| 331 | } |
| 332 | $field->opt = new PdfArray($optItems); |
| 333 | if ($options->defaultValue !== null) { |
| 334 | $field->v = new PdfString($options->defaultValue); |
| 335 | $field->dv = new PdfString($options->defaultValue); |
| 336 | } |
| 337 | $this->attachFieldWidget($page, $rect, $field); |
| 338 | return $field; |
| 339 | } |
| 340 | |
| 341 | /** |
| 342 | * Add a signature field placeholder. Pair with |
| 343 | * {@see PdfWriter::setSigner()} to actually sign the document at |
| 344 | * generate time. |
| 345 | */ |
| 346 | public function addSignatureField( |
| 347 | string $name, |
| 348 | Page|CorePage $page, |
| 349 | Rectangle $rect, |
| 350 | ): SignatureField { |
| 351 | $field = new SignatureField(); |
| 352 | $field->t = new PdfString($name); |
| 353 | $this->attachFieldWidget($page, $rect, $field); |
| 354 | |
| 355 | // Ensure the AcroForm declares /SigFlags = 3 (SignaturesExist |
| 356 | // + AppendOnly) so viewers handle the file as signed-ready. |
| 357 | $acroForm = $this->ensureAcroForm(); |
| 358 | $acroForm->sigFlags = ($acroForm->sigFlags ?? 0) | 3; |
| 359 | return $field; |
| 360 | } |
| 361 | |
| 362 | private function computeFieldFlags(bool $required, bool $readOnly): int |
| 363 | { |
| 364 | return ($readOnly ? 1 : 0) | ($required ? 2 : 0); |
| 365 | } |
| 366 | |
| 367 | /** |
| 368 | * Wire a field into both the AcroForm fields list and a Widget |
| 369 | * annotation on the page. The Widget references the field as its |
| 370 | * /Parent; the field's /Kids list points back at the widget. |
| 371 | */ |
| 372 | private function attachFieldWidget( |
| 373 | Page|CorePage $page, |
| 374 | Rectangle $rect, |
| 375 | \Phpdftk\Pdf\Core\Interactive\Form\Field $field, |
| 376 | ): void { |
| 377 | $widget = new WidgetAnnotation($this->rectToPdfArray($rect)); |
| 378 | $this->writer->register($widget); |
| 379 | $this->writer->register($field); |
| 380 | |
| 381 | $field->kids[] = new PdfReference($widget->objectNumber); |
| 382 | $widget->parent = new PdfReference($field->objectNumber); |
| 383 | |
| 384 | $corePage = $page instanceof Page ? $page->corePage() : $page; |
| 385 | $corePage->annots[] = new PdfReference($widget->objectNumber); |
| 386 | |
| 387 | $acroForm = $this->ensureAcroForm(); |
| 388 | $acroForm->fields[] = new PdfReference($field->objectNumber); |
| 389 | } |
| 390 | |
| 391 | private function ensureAcroForm(): AcroForm |
| 392 | { |
| 393 | if ($this->acroForm !== null) { |
| 394 | return $this->acroForm; |
| 395 | } |
| 396 | $form = new AcroForm(); |
| 397 | // NeedAppearances asks viewers to generate widget appearances |
| 398 | // on open — appropriate when the writer doesn't pre-build /AP. |
| 399 | $form->needAppearances = true; |
| 400 | $this->writer->register($form); |
| 401 | $this->writer->getCatalog()->acroForm = new PdfReference($form->objectNumber); |
| 402 | $this->acroForm = $form; |
| 403 | return $form; |
| 404 | } |
| 405 | |
| 406 | // ----------------------------------------------------------------------- |
| 407 | // Gradients |
| 408 | // ----------------------------------------------------------------------- |
| 409 | |
| 410 | /** |
| 411 | * Register a two-stop axial (linear) gradient. The returned |
| 412 | * {@see ShadingPattern} can be used as a fill via |
| 413 | * {@see Writer\Page::useGradient()}. |
| 414 | * |
| 415 | * @param array{float,float,float} $startRgb RGB at gradient origin. |
| 416 | * @param array{float,float,float} $endRgb RGB at gradient end. |
| 417 | */ |
| 418 | public function addLinearGradient( |
| 419 | Point $from, |
| 420 | Point $to, |
| 421 | array $startRgb, |
| 422 | array $endRgb, |
| 423 | bool $extend = false, |
| 424 | ): ShadingPattern { |
| 425 | $fn = $this->buildRgbFunction($startRgb, $endRgb); |
| 426 | $shading = new ShadingType2( |
| 427 | new PdfName('DeviceRGB'), |
| 428 | new PdfArray([ |
| 429 | new PdfNumber($from->x), |
| 430 | new PdfNumber($from->y), |
| 431 | new PdfNumber($to->x), |
| 432 | new PdfNumber($to->y), |
| 433 | ]), |
| 434 | new PdfReference($fn->objectNumber), |
| 435 | ); |
| 436 | if ($extend) { |
| 437 | $shading->extend = self::extendBothEnds(); |
| 438 | } |
| 439 | $this->writer->register($shading); |
| 440 | |
| 441 | $pattern = new ShadingPattern(new PdfReference($shading->objectNumber)); |
| 442 | $this->writer->register($pattern); |
| 443 | return $pattern; |
| 444 | } |
| 445 | |
| 446 | /** |
| 447 | * Register a two-stop radial gradient. `$inner` / `$outer` are |
| 448 | * concentric (or non-concentric) circles defining the gradient |
| 449 | * boundary. |
| 450 | * |
| 451 | * @param array{float,float,float} $startRgb RGB at inner radius. |
| 452 | * @param array{float,float,float} $endRgb RGB at outer radius. |
| 453 | */ |
| 454 | public function addRadialGradient( |
| 455 | Point $innerCenter, |
| 456 | float $innerRadius, |
| 457 | Point $outerCenter, |
| 458 | float $outerRadius, |
| 459 | array $startRgb, |
| 460 | array $endRgb, |
| 461 | bool $extend = false, |
| 462 | ): ShadingPattern { |
| 463 | $fn = $this->buildRgbFunction($startRgb, $endRgb); |
| 464 | $shading = new ShadingType3( |
| 465 | new PdfName('DeviceRGB'), |
| 466 | new PdfArray([ |
| 467 | new PdfNumber($innerCenter->x), |
| 468 | new PdfNumber($innerCenter->y), |
| 469 | new PdfNumber($innerRadius), |
| 470 | new PdfNumber($outerCenter->x), |
| 471 | new PdfNumber($outerCenter->y), |
| 472 | new PdfNumber($outerRadius), |
| 473 | ]), |
| 474 | new PdfReference($fn->objectNumber), |
| 475 | ); |
| 476 | if ($extend) { |
| 477 | $shading->extend = self::extendBothEnds(); |
| 478 | } |
| 479 | $this->writer->register($shading); |
| 480 | |
| 481 | $pattern = new ShadingPattern(new PdfReference($shading->objectNumber)); |
| 482 | $this->writer->register($pattern); |
| 483 | return $pattern; |
| 484 | } |
| 485 | |
| 486 | /** |
| 487 | * Register an N-stop axial (linear) gradient. Each stop is a |
| 488 | * `{offset, rgb}` pair with `offset` in [0, 1]. Stops must be |
| 489 | * sorted ascending and start at 0 / end at 1 (the caller is |
| 490 | * responsible for normalising — typical CSS gradient resolution |
| 491 | * already does this). Two-stop input falls through to the same |
| 492 | * Type-2 function as `addLinearGradient`; three-or-more produces |
| 493 | * a Type-3 stitching function with N-1 Type-2 sub-functions. |
| 494 | * |
| 495 | * @param list<array{offset: float, rgb: array{float, float, float}}> $stops |
| 496 | */ |
| 497 | public function addLinearGradientStops( |
| 498 | Point $from, |
| 499 | Point $to, |
| 500 | array $stops, |
| 501 | bool $extend = false, |
| 502 | ): ShadingPattern { |
| 503 | $fn = $this->buildRgbStopFunction($stops); |
| 504 | $shading = new ShadingType2( |
| 505 | new PdfName('DeviceRGB'), |
| 506 | new PdfArray([ |
| 507 | new PdfNumber($from->x), |
| 508 | new PdfNumber($from->y), |
| 509 | new PdfNumber($to->x), |
| 510 | new PdfNumber($to->y), |
| 511 | ]), |
| 512 | new PdfReference($fn->objectNumber), |
| 513 | ); |
| 514 | if ($extend) { |
| 515 | $shading->extend = self::extendBothEnds(); |
| 516 | } |
| 517 | $this->writer->register($shading); |
| 518 | |
| 519 | $pattern = new ShadingPattern(new PdfReference($shading->objectNumber)); |
| 520 | $this->writer->register($pattern); |
| 521 | return $pattern; |
| 522 | } |
| 523 | |
| 524 | /** |
| 525 | * Register an N-stop radial gradient. Same stop semantics as |
| 526 | * {@see addLinearGradientStops()}. |
| 527 | * |
| 528 | * @param list<array{offset: float, rgb: array{float, float, float}}> $stops |
| 529 | */ |
| 530 | public function addRadialGradientStops( |
| 531 | Point $innerCenter, |
| 532 | float $innerRadius, |
| 533 | Point $outerCenter, |
| 534 | float $outerRadius, |
| 535 | array $stops, |
| 536 | bool $extend = false, |
| 537 | ): ShadingPattern { |
| 538 | $fn = $this->buildRgbStopFunction($stops); |
| 539 | $shading = new ShadingType3( |
| 540 | new PdfName('DeviceRGB'), |
| 541 | new PdfArray([ |
| 542 | new PdfNumber($innerCenter->x), |
| 543 | new PdfNumber($innerCenter->y), |
| 544 | new PdfNumber($innerRadius), |
| 545 | new PdfNumber($outerCenter->x), |
| 546 | new PdfNumber($outerCenter->y), |
| 547 | new PdfNumber($outerRadius), |
| 548 | ]), |
| 549 | new PdfReference($fn->objectNumber), |
| 550 | ); |
| 551 | if ($extend) { |
| 552 | $shading->extend = self::extendBothEnds(); |
| 553 | } |
| 554 | $this->writer->register($shading); |
| 555 | |
| 556 | $pattern = new ShadingPattern(new PdfReference($shading->objectNumber)); |
| 557 | $this->writer->register($pattern); |
| 558 | return $pattern; |
| 559 | } |
| 560 | |
| 561 | /** |
| 562 | * Build a Function object that maps [0,1] → RGB through the given |
| 563 | * stop list. Two stops produce a Type-2 (exponential, n=1, linear |
| 564 | * interpolation). Three or more stops produce a Type-3 stitching |
| 565 | * function: bounds at the intermediate stop offsets, N-1 child |
| 566 | * Type-2 functions each linearly interpolating one segment. |
| 567 | * |
| 568 | * @param list<array{offset: float, rgb: array{float, float, float}}> $stops |
| 569 | */ |
| 570 | private function buildRgbStopFunction(array $stops): FunctionType2|FunctionType3 |
| 571 | { |
| 572 | if (count($stops) < 2) { |
| 573 | throw new \InvalidArgumentException('Gradient requires at least 2 stops.'); |
| 574 | } |
| 575 | if (count($stops) === 2) { |
| 576 | return $this->buildRgbFunction($stops[0]['rgb'], $stops[1]['rgb']); |
| 577 | } |
| 578 | // Build N-1 segment functions linearly interpolating between |
| 579 | // adjacent stops. |
| 580 | $subFunctions = []; |
| 581 | $bounds = []; |
| 582 | $encode = []; |
| 583 | $count = count($stops); |
| 584 | for ($i = 0; $i < $count - 1; $i++) { |
| 585 | $segment = $this->buildRgbFunction($stops[$i]['rgb'], $stops[$i + 1]['rgb']); |
| 586 | $subFunctions[] = new PdfReference($segment->objectNumber); |
| 587 | if ($i > 0) { |
| 588 | $bounds[] = new PdfNumber($stops[$i]['offset']); |
| 589 | } |
| 590 | // Each segment consumes its full [0, 1] domain. |
| 591 | $encode[] = new PdfNumber(0.0); |
| 592 | $encode[] = new PdfNumber(1.0); |
| 593 | } |
| 594 | $fn = new FunctionType3( |
| 595 | domain: new PdfArray([new PdfNumber(0.0), new PdfNumber(1.0)]), |
| 596 | functions: new PdfArray($subFunctions), |
| 597 | bounds: new PdfArray($bounds), |
| 598 | encode: new PdfArray($encode), |
| 599 | ); |
| 600 | $fn->range = new PdfArray([ |
| 601 | new PdfNumber(0.0), new PdfNumber(1.0), |
| 602 | new PdfNumber(0.0), new PdfNumber(1.0), |
| 603 | new PdfNumber(0.0), new PdfNumber(1.0), |
| 604 | ]); |
| 605 | $this->writer->register($fn); |
| 606 | return $fn; |
| 607 | } |
| 608 | |
| 609 | /** |
| 610 | * @param array{float,float,float} $startRgb |
| 611 | * @param array{float,float,float} $endRgb |
| 612 | */ |
| 613 | private function buildRgbFunction(array $startRgb, array $endRgb): FunctionType2 |
| 614 | { |
| 615 | $fn = new FunctionType2( |
| 616 | domain: new PdfArray([new PdfNumber(0.0), new PdfNumber(1.0)]), |
| 617 | c0: new PdfArray([ |
| 618 | new PdfNumber($startRgb[0]), |
| 619 | new PdfNumber($startRgb[1]), |
| 620 | new PdfNumber($startRgb[2]), |
| 621 | ]), |
| 622 | c1: new PdfArray([ |
| 623 | new PdfNumber($endRgb[0]), |
| 624 | new PdfNumber($endRgb[1]), |
| 625 | new PdfNumber($endRgb[2]), |
| 626 | ]), |
| 627 | n: 1.0, |
| 628 | ); |
| 629 | $fn->range = new PdfArray([ |
| 630 | new PdfNumber(0.0), new PdfNumber(1.0), |
| 631 | new PdfNumber(0.0), new PdfNumber(1.0), |
| 632 | new PdfNumber(0.0), new PdfNumber(1.0), |
| 633 | ]); |
| 634 | $this->writer->register($fn); |
| 635 | return $fn; |
| 636 | } |
| 637 | |
| 638 | /** |
| 639 | * Build `/Extend [true true]` — used by the `addLinearGradient*` / |
| 640 | * `addRadialGradient*` registration helpers when the caller opts |
| 641 | * into endpoint-pad semantics on a Type 2 / Type 3 shading. |
| 642 | */ |
| 643 | private static function extendBothEnds(): PdfArray |
| 644 | { |
| 645 | return new PdfArray([true, true]); |
| 646 | } |
| 647 | |
| 648 | // ----------------------------------------------------------------------- |
| 649 | // Spot colors |
| 650 | // ----------------------------------------------------------------------- |
| 651 | |
| 652 | /** |
| 653 | * Register a spot color (a {@see Separation} color space). The |
| 654 | * `$cmykTint` parameter specifies the device-CMYK approximation |
| 655 | * used by viewers that don't have the spot ink — values are 0–1. |
| 656 | * |
| 657 | * Use the returned `Separation` with |
| 658 | * {@see Writer\Page::useSpotColor()} to attach it to a page's |
| 659 | * resources and obtain the resource name for content-stream ops: |
| 660 | * |
| 661 | * $sep = $doc->registerSpotColor('Pantone 185 C', [0, 0.85, 0.6, 0]); |
| 662 | * $name = $page->useSpotColor($sep); |
| 663 | * $page->contentStream() |
| 664 | * ->setFillColorSpace($name) |
| 665 | * ->setFillColor(1.0) // full tint |
| 666 | * ->rectangle(72, 600, 200, 80) |
| 667 | * ->fill(); |
| 668 | * |
| 669 | * @param array{float,float,float,float} $cmykTint |
| 670 | */ |
| 671 | public function registerSpotColor(string $name, array $cmykTint): SpotColor |
| 672 | { |
| 673 | $tintFn = new FunctionType2( |
| 674 | domain: new PdfArray([new PdfNumber(0.0), new PdfNumber(1.0)]), |
| 675 | c0: new PdfArray([ |
| 676 | new PdfNumber(0.0), |
| 677 | new PdfNumber(0.0), |
| 678 | new PdfNumber(0.0), |
| 679 | new PdfNumber(0.0), |
| 680 | ]), |
| 681 | c1: new PdfArray([ |
| 682 | new PdfNumber($cmykTint[0]), |
| 683 | new PdfNumber($cmykTint[1]), |
| 684 | new PdfNumber($cmykTint[2]), |
| 685 | new PdfNumber($cmykTint[3]), |
| 686 | ]), |
| 687 | n: 1.0, |
| 688 | ); |
| 689 | $tintFn->range = new PdfArray([ |
| 690 | new PdfNumber(0.0), |
| 691 | new PdfNumber(1.0), |
| 692 | new PdfNumber(0.0), |
| 693 | new PdfNumber(1.0), |
| 694 | new PdfNumber(0.0), |
| 695 | new PdfNumber(1.0), |
| 696 | new PdfNumber(0.0), |
| 697 | new PdfNumber(1.0), |
| 698 | ]); |
| 699 | $this->writer->register($tintFn); |
| 700 | |
| 701 | $separation = new Separation( |
| 702 | new PdfName($name), |
| 703 | new PdfName('DeviceCMYK'), |
| 704 | new PdfReference($tintFn->objectNumber), |
| 705 | ); |
| 706 | // `Separation` is a value type (implements Serializable) — it's |
| 707 | // inlined into the page's /Resources /ColorSpace entry rather |
| 708 | // than registered as an indirect object. |
| 709 | return new SpotColor($name, $separation); |
| 710 | } |
| 711 | |
| 712 | // ----------------------------------------------------------------------- |
| 713 | // Barcodes |
| 714 | // ----------------------------------------------------------------------- |
| 715 | |
| 716 | /** |
| 717 | * Build a reusable {@see FormXObject} containing a barcode |
| 718 | * rendering. The resulting template can be placed on multiple |
| 719 | * pages via `Writer\Page::drawTemplate()`. |
| 720 | * |
| 721 | * Only `Symbology::Code128` is implemented in v1; other cases |
| 722 | * throw at render time. |
| 723 | */ |
| 724 | public function createBarcode( |
| 725 | Symbology $symbology, |
| 726 | string $data, |
| 727 | ?BarcodeOptions $options = null, |
| 728 | ): FormXObject { |
| 729 | $options ??= new BarcodeOptions(); |
| 730 | $bitmap = BarcodeRenderer::render($symbology, $data, $options); |
| 731 | |
| 732 | return $this->createTemplate( |
| 733 | new Rectangle(0.0, 0.0, $bitmap->totalWidth(), $bitmap->totalHeight()), |
| 734 | function (ContentStream $cs) use ($bitmap): void { |
| 735 | BarcodeRendering::renderInto($cs, $bitmap); |
| 736 | }, |
| 737 | ); |
| 738 | } |
| 739 | |
| 740 | |
| 741 | /** |
| 742 | * Build a reusable Form XObject — a self-contained content stream |
| 743 | * that can be placed on multiple pages without re-emitting the |
| 744 | * underlying operators. |
| 745 | * |
| 746 | * The closure receives a fresh {@see ContentStream} sized to |
| 747 | * `$bbox` (origin at `bbox->x, bbox->y`). Any drawing operators |
| 748 | * the closure adds are captured into the FormXObject's stream; |
| 749 | * resources (fonts, images) used inside the template must be |
| 750 | * registered on the FormXObject's own resource dict — for v1, the |
| 751 | * caller passes pre-registered Font handles into the closure if |
| 752 | * needed and accepts that the template inherits resources from |
| 753 | * the placing page. |
| 754 | * |
| 755 | * @param \Closure(ContentStream): void $draw |
| 756 | */ |
| 757 | public function createTemplate(Rectangle $bbox, \Closure $draw): FormXObject |
| 758 | { |
| 759 | [$llx, $lly, $urx, $ury] = $bbox->toArray(); |
| 760 | $bboxArr = new PdfArray([ |
| 761 | new PdfNumber($llx), |
| 762 | new PdfNumber($lly), |
| 763 | new PdfNumber($urx), |
| 764 | new PdfNumber($ury), |
| 765 | ]); |
| 766 | |
| 767 | $cs = new ContentStream(); |
| 768 | $draw($cs); |
| 769 | |
| 770 | $template = new FormXObject($bboxArr, implode("\n", $cs->getOperators())); |
| 771 | // Empty Resources so the placing page contributes shared |
| 772 | // fonts / images via its own resource dict. |
| 773 | $template->resources = new Resources(); |
| 774 | $this->writer->register($template); |
| 775 | return $template; |
| 776 | } |
| 777 | |
| 778 | // ----------------------------------------------------------------------- |
| 779 | // Actions |
| 780 | // ----------------------------------------------------------------------- |
| 781 | |
| 782 | /** |
| 783 | * Set the document's open action — executed by the viewer when |
| 784 | * the document is loaded. Typically used to jump to a specific |
| 785 | * page or run JavaScript on open. The action is registered as an |
| 786 | * indirect object; pass an instance from {@see Action}'s static |
| 787 | * factories. |
| 788 | */ |
| 789 | public function setOpenAction(\Phpdftk\Pdf\Core\Action\Action $action): self |
| 790 | { |
| 791 | $this->writer->register($action); |
| 792 | $this->writer->getCatalog()->openAction = new PdfReference($action->objectNumber); |
| 793 | return $this; |
| 794 | } |
| 795 | |
| 796 | // ----------------------------------------------------------------------- |
| 797 | // Optional content (layers) |
| 798 | // ----------------------------------------------------------------------- |
| 799 | |
| 800 | /** |
| 801 | * Register a new optional-content group (layer). The returned |
| 802 | * `OCG` is referenced from the catalog's `/OCProperties` /OCGs |
| 803 | * array; pass it to {@see Writer\Page::inLayer()} to tag drawing |
| 804 | * operations as belonging to this layer. |
| 805 | * |
| 806 | * `$visible` controls the default state: visible layers go into |
| 807 | * the default config's `/ON` list, hidden ones into `/OFF`. |
| 808 | */ |
| 809 | public function addLayer(string $name, bool $visible = true): OCG |
| 810 | { |
| 811 | $ocg = new OCG($name); |
| 812 | $this->writer->register($ocg); |
| 813 | $ref = new PdfReference($ocg->objectNumber); |
| 814 | |
| 815 | $props = $this->ensureOCPropertiesDict(); |
| 816 | $props->ocgs = new PdfArray([...$props->ocgs->items, $ref]); |
| 817 | |
| 818 | $key = $visible ? 'ON' : 'OFF'; |
| 819 | $list = $props->d->get($key); |
| 820 | $items = $list instanceof PdfArray ? $list->items : []; |
| 821 | $items[] = $ref; |
| 822 | $props->d->set($key, new PdfArray($items)); |
| 823 | |
| 824 | return $ocg; |
| 825 | } |
| 826 | |
| 827 | private function ensureOCPropertiesDict(): OCPropertiesDict |
| 828 | { |
| 829 | if ($this->ocPropertiesDict !== null) { |
| 830 | return $this->ocPropertiesDict; |
| 831 | } |
| 832 | $defaultConfig = new PdfDictionary([ |
| 833 | 'Name' => new PdfString('Default'), |
| 834 | 'BaseState' => new PdfName('ON'), |
| 835 | 'ON' => new PdfArray([]), |
| 836 | 'OFF' => new PdfArray([]), |
| 837 | ]); |
| 838 | $props = new OCPropertiesDict(new PdfArray([]), $defaultConfig); |
| 839 | $this->writer->register($props); |
| 840 | $this->writer->getCatalog()->ocProperties = new PdfReference($props->objectNumber); |
| 841 | $this->ocPropertiesDict = $props; |
| 842 | return $props; |
| 843 | } |
| 844 | |
| 845 | // ----------------------------------------------------------------------- |
| 846 | // File attachments |
| 847 | // ----------------------------------------------------------------------- |
| 848 | |
| 849 | /** |
| 850 | * Attach a file from disk. The file's bytes are read via |
| 851 | * {@see LocalFilesystem::readFile()} and embedded as an |
| 852 | * `EmbeddedFile`, wrapped in a `FileSpec`, and appended to the |
| 853 | * catalog's `/AF` (Associated Files) array. |
| 854 | * |
| 855 | * `$relationship` populates `/AFRelationship` — the PDF 2.0 hint |
| 856 | * to viewers about the file's role. ZUGFeRD invoices use |
| 857 | * `Alternative` for the embedded XML; common values are `Source`, |
| 858 | * `Data`, `Alternative`, `Supplement`, `EncryptedPayload`, and |
| 859 | * `FormData`. |
| 860 | */ |
| 861 | public function attachFile( |
| 862 | string $path, |
| 863 | ?string $description = null, |
| 864 | ?string $mimeType = null, |
| 865 | ?string $relationship = null, |
| 866 | ): FileSpec { |
| 867 | $bytes = LocalFilesystem::readFile($path); |
| 868 | $name = basename($path); |
| 869 | return $this->attachBytes($name, $bytes, $description, $mimeType, $relationship); |
| 870 | } |
| 871 | |
| 872 | /** |
| 873 | * Attach a file from in-memory bytes — useful when the source |
| 874 | * isn't on disk (generated XML for ZUGFeRD, downloaded content, |
| 875 | * etc.). |
| 876 | */ |
| 877 | public function attachFileBytes( |
| 878 | string $name, |
| 879 | string $bytes, |
| 880 | ?string $description = null, |
| 881 | ?string $mimeType = null, |
| 882 | ?string $relationship = null, |
| 883 | ): FileSpec { |
| 884 | return $this->attachBytes($name, $bytes, $description, $mimeType, $relationship); |
| 885 | } |
| 886 | |
| 887 | private function attachBytes( |
| 888 | string $name, |
| 889 | string $bytes, |
| 890 | ?string $description, |
| 891 | ?string $mimeType, |
| 892 | ?string $relationship, |
| 893 | ): FileSpec { |
| 894 | $embedded = new EmbeddedFile($bytes, $mimeType); |
| 895 | $this->writer->register($embedded); |
| 896 | |
| 897 | $fileSpec = new FileSpec($name); |
| 898 | $fileSpec->attachEmbeddedFile(new PdfReference($embedded->objectNumber)); |
| 899 | if ($description !== null) { |
| 900 | $fileSpec->desc = new PdfString($description); |
| 901 | } |
| 902 | if ($relationship !== null) { |
| 903 | $fileSpec->afRelationship = new PdfName($relationship); |
| 904 | } |
| 905 | $this->writer->register($fileSpec); |
| 906 | |
| 907 | $catalog = $this->writer->getCatalog(); |
| 908 | $existing = $catalog->af !== null ? $catalog->af->items : []; |
| 909 | $existing[] = new PdfReference($fileSpec->objectNumber); |
| 910 | $catalog->af = new PdfArray($existing); |
| 911 | |
| 912 | return $fileSpec; |
| 913 | } |
| 914 | |
| 915 | // ----------------------------------------------------------------------- |
| 916 | // Viewer preferences |
| 917 | // ----------------------------------------------------------------------- |
| 918 | |
| 919 | /** |
| 920 | * Set the document's viewer preferences. Accepts either a |
| 921 | * pre-constructed {@see ViewerPreferences} object or a closure |
| 922 | * that receives a fresh instance and mutates it. |
| 923 | * |
| 924 | * Closure form: |
| 925 | * $doc->setViewerPreferences(function (ViewerPreferences $vp): void { |
| 926 | * $vp->displayDocTitle = true; |
| 927 | * $vp->fitWindow = true; |
| 928 | * }); |
| 929 | */ |
| 930 | public function setViewerPreferences(ViewerPreferences|\Closure $prefs): self |
| 931 | { |
| 932 | if ($prefs instanceof \Closure) { |
| 933 | $vp = new ViewerPreferences(); |
| 934 | $prefs($vp); |
| 935 | } else { |
| 936 | $vp = $prefs; |
| 937 | } |
| 938 | $this->writer->register($vp); |
| 939 | $this->writer->getCatalog()->viewerPreferences = new PdfReference($vp->objectNumber); |
| 940 | return $this; |
| 941 | } |
| 942 | |
| 943 | // ----------------------------------------------------------------------- |
| 944 | // Annotations |
| 945 | // ----------------------------------------------------------------------- |
| 946 | |
| 947 | /** |
| 948 | * Add a link annotation to a page. |
| 949 | * |
| 950 | * `$target` accepts: |
| 951 | * - **string** — treated as a URI; an inline /A action dict is built. |
| 952 | * - **Destination** — an explicit destination (use the named |
| 953 | * constructors `Destination::fit($pageRef)`, |
| 954 | * `Destination::xyz(...)`, etc.). |
| 955 | * - **PdfReference** — points to a named destination that has been |
| 956 | * registered via {@see setNamedDestinations()}. |
| 957 | */ |
| 958 | public function addLink( |
| 959 | Page|CorePage $page, |
| 960 | Rectangle $rect, |
| 961 | string|Destination|PdfReference $target, |
| 962 | ?BorderStyle $border = null, |
| 963 | ): LinkAnnotation { |
| 964 | $corePage = $page instanceof Page ? $page->corePage() : $page; |
| 965 | |
| 966 | [$llx, $lly, $urx, $ury] = $rect->toArray(); |
| 967 | $rectArray = new PdfArray([ |
| 968 | new PdfNumber($llx), |
| 969 | new PdfNumber($lly), |
| 970 | new PdfNumber($urx), |
| 971 | new PdfNumber($ury), |
| 972 | ]); |
| 973 | |
| 974 | $annotation = new LinkAnnotation($rectArray); |
| 975 | |
| 976 | if (is_string($target)) { |
| 977 | $actionDict = new PdfDictionary(); |
| 978 | $actionDict->set('Type', new PdfName('Action')); |
| 979 | $actionDict->set('S', new PdfName('URI')); |
| 980 | $actionDict->set('URI', new PdfString($target)); |
| 981 | $annotation->a = $actionDict; |
| 982 | } else { |
| 983 | $annotation->dest = $target; |
| 984 | } |
| 985 | |
| 986 | if ($border !== null) { |
| 987 | $annotation->bs = $border; |
| 988 | } |
| 989 | |
| 990 | $this->writer->register($annotation); |
| 991 | $corePage->annots[] = new PdfReference($annotation->objectNumber); |
| 992 | |
| 993 | return $annotation; |
| 994 | } |
| 995 | |
| 996 | /** |
| 997 | * Add a sticky-note ("text") annotation — a small icon that opens |
| 998 | * a popup with `$content` text when clicked. `$point` is the |
| 999 | * lower-left corner; the rect defaults to a 16×16 box around it. |
| 1000 | */ |
| 1001 | public function addStickyNote( |
| 1002 | Page|CorePage $page, |
| 1003 | float $x, |
| 1004 | float $y, |
| 1005 | string $content, |
| 1006 | ?string $iconName = null, |
| 1007 | ): TextAnnotation { |
| 1008 | $rect = new Rectangle($x, $y, 16.0, 16.0); |
| 1009 | $annotation = new TextAnnotation($this->rectToPdfArray($rect)); |
| 1010 | $annotation->contents = new PdfString($content); |
| 1011 | if ($iconName !== null) { |
| 1012 | $annotation->name = new PdfName($iconName); |
| 1013 | } |
| 1014 | return $this->attachAnnotation($page, $annotation); |
| 1015 | } |
| 1016 | |
| 1017 | /** |
| 1018 | * Add a free-text annotation — text drawn directly on the page |
| 1019 | * (rather than in a popup like a sticky note). `$defaultAppearance` |
| 1020 | * is the PDF "default appearance" string controlling font + colour |
| 1021 | * (e.g. `/Helv 10 Tf 0 0 0 rg`). |
| 1022 | */ |
| 1023 | public function addFreeText( |
| 1024 | Page|CorePage $page, |
| 1025 | Rectangle $rect, |
| 1026 | string $content, |
| 1027 | string $defaultAppearance = '/Helv 10 Tf 0 0 0 rg', |
| 1028 | ): FreeTextAnnotation { |
| 1029 | $annotation = new FreeTextAnnotation( |
| 1030 | $this->rectToPdfArray($rect), |
| 1031 | new PdfString($defaultAppearance), |
| 1032 | ); |
| 1033 | $annotation->contents = new PdfString($content); |
| 1034 | return $this->attachAnnotation($page, $annotation); |
| 1035 | } |
| 1036 | |
| 1037 | /** |
| 1038 | * Add a text-highlight annotation. `$quads` is a list of |
| 1039 | * `Rectangle`s — one per highlighted span (typically each text |
| 1040 | * line). The annotation's bounding rect is the union of all quads. |
| 1041 | * |
| 1042 | * @param list<Rectangle> $quads |
| 1043 | */ |
| 1044 | public function addHighlight(Page|CorePage $page, array $quads): HighlightAnnotation |
| 1045 | { |
| 1046 | [$rectArr, $quadArr] = $this->quadsToArrays($quads); |
| 1047 | $annotation = new HighlightAnnotation($rectArr, $quadArr); |
| 1048 | return $this->attachAnnotation($page, $annotation); |
| 1049 | } |
| 1050 | |
| 1051 | /** |
| 1052 | * Add an underline annotation — visually similar to highlight but |
| 1053 | * draws a line under each text span. `$quads` is one rect per span. |
| 1054 | * |
| 1055 | * @param list<Rectangle> $quads |
| 1056 | */ |
| 1057 | public function addUnderlineAnnotation(Page|CorePage $page, array $quads): UnderlineAnnotation |
| 1058 | { |
| 1059 | [$rectArr, $quadArr] = $this->quadsToArrays($quads); |
| 1060 | $annotation = new UnderlineAnnotation($rectArr); |
| 1061 | $annotation->quadPoints = $quadArr; |
| 1062 | return $this->attachAnnotation($page, $annotation); |
| 1063 | } |
| 1064 | |
| 1065 | /** |
| 1066 | * Add a squiggly-underline annotation — wavy line below each text span. |
| 1067 | * |
| 1068 | * @param list<Rectangle> $quads |
| 1069 | */ |
| 1070 | public function addSquiggly(Page|CorePage $page, array $quads): SquigglyAnnotation |
| 1071 | { |
| 1072 | [$rectArr, $quadArr] = $this->quadsToArrays($quads); |
| 1073 | $annotation = new SquigglyAnnotation($rectArr); |
| 1074 | $annotation->quadPoints = $quadArr; |
| 1075 | return $this->attachAnnotation($page, $annotation); |
| 1076 | } |
| 1077 | |
| 1078 | /** |
| 1079 | * Add a strikeout annotation — line through each text span. |
| 1080 | * |
| 1081 | * @param list<Rectangle> $quads |
| 1082 | */ |
| 1083 | public function addStrikeout(Page|CorePage $page, array $quads): StrikeOutAnnotation |
| 1084 | { |
| 1085 | [$rectArr, $quadArr] = $this->quadsToArrays($quads); |
| 1086 | $annotation = new StrikeOutAnnotation($rectArr); |
| 1087 | $annotation->quadPoints = $quadArr; |
| 1088 | return $this->attachAnnotation($page, $annotation); |
| 1089 | } |
| 1090 | |
| 1091 | /** |
| 1092 | * Add a caret annotation — small upward-pointing wedge typically |
| 1093 | * used to mark an insertion point. |
| 1094 | */ |
| 1095 | public function addCaret(Page|CorePage $page, Rectangle $rect): CaretAnnotation |
| 1096 | { |
| 1097 | $annotation = new CaretAnnotation($this->rectToPdfArray($rect)); |
| 1098 | return $this->attachAnnotation($page, $annotation); |
| 1099 | } |
| 1100 | |
| 1101 | /** |
| 1102 | * Add a free-form ink annotation. `$paths` is a list of strokes, |
| 1103 | * each stroke a flat list of `[x0, y0, x1, y1, ...]` points. |
| 1104 | * |
| 1105 | * @param list<list<float>> $paths |
| 1106 | */ |
| 1107 | public function addInk(Page|CorePage $page, array $paths): InkAnnotation |
| 1108 | { |
| 1109 | $minX = PHP_FLOAT_MAX; |
| 1110 | $minY = PHP_FLOAT_MAX; |
| 1111 | $maxX = -PHP_FLOAT_MAX; |
| 1112 | $maxY = -PHP_FLOAT_MAX; |
| 1113 | $inkPaths = []; |
| 1114 | foreach ($paths as $path) { |
| 1115 | $pdfPath = []; |
| 1116 | $count = count($path); |
| 1117 | for ($i = 0; $i + 1 < $count; $i += 2) { |
| 1118 | $x = (float) $path[$i]; |
| 1119 | $y = (float) $path[$i + 1]; |
| 1120 | $minX = min($minX, $x); |
| 1121 | $minY = min($minY, $y); |
| 1122 | $maxX = max($maxX, $x); |
| 1123 | $maxY = max($maxY, $y); |
| 1124 | $pdfPath[] = new PdfNumber($x); |
| 1125 | $pdfPath[] = new PdfNumber($y); |
| 1126 | } |
| 1127 | $inkPaths[] = new PdfArray($pdfPath); |
| 1128 | } |
| 1129 | if ($minX === PHP_FLOAT_MAX) { |
| 1130 | $minX = $minY = $maxX = $maxY = 0.0; |
| 1131 | } |
| 1132 | $rectArr = new PdfArray([ |
| 1133 | new PdfNumber($minX), |
| 1134 | new PdfNumber($minY), |
| 1135 | new PdfNumber($maxX), |
| 1136 | new PdfNumber($maxY), |
| 1137 | ]); |
| 1138 | $annotation = new InkAnnotation($rectArr, new PdfArray($inkPaths)); |
| 1139 | return $this->attachAnnotation($page, $annotation); |
| 1140 | } |
| 1141 | |
| 1142 | /** |
| 1143 | * Add a line annotation between two points. |
| 1144 | */ |
| 1145 | public function addLineAnnotation( |
| 1146 | Page|CorePage $page, |
| 1147 | float $x1, |
| 1148 | float $y1, |
| 1149 | float $x2, |
| 1150 | float $y2, |
| 1151 | ): LineAnnotation { |
| 1152 | $rectArr = new PdfArray([ |
| 1153 | new PdfNumber(min($x1, $x2)), |
| 1154 | new PdfNumber(min($y1, $y2)), |
| 1155 | new PdfNumber(max($x1, $x2)), |
| 1156 | new PdfNumber(max($y1, $y2)), |
| 1157 | ]); |
| 1158 | $annotation = new LineAnnotation($rectArr); |
| 1159 | $annotation->l = new PdfArray([ |
| 1160 | new PdfNumber($x1), |
| 1161 | new PdfNumber($y1), |
| 1162 | new PdfNumber($x2), |
| 1163 | new PdfNumber($y2), |
| 1164 | ]); |
| 1165 | return $this->attachAnnotation($page, $annotation); |
| 1166 | } |
| 1167 | |
| 1168 | /** |
| 1169 | * Add a polygon annotation. `$points` is a list of `[x, y]` pairs; |
| 1170 | * the polygon is implicitly closed back to the first vertex. |
| 1171 | * |
| 1172 | * @param list<array{float,float}> $points |
| 1173 | */ |
| 1174 | public function addPolygon(Page|CorePage $page, array $points): PolygonAnnotation |
| 1175 | { |
| 1176 | [$rectArr, $vertices] = $this->pointsToRectAndArray($points); |
| 1177 | $annotation = new PolygonAnnotation($rectArr); |
| 1178 | $annotation->vertices = $vertices; |
| 1179 | return $this->attachAnnotation($page, $annotation); |
| 1180 | } |
| 1181 | |
| 1182 | /** |
| 1183 | * Add a polyline annotation — like a polygon but open (last point |
| 1184 | * does not connect back to the first). |
| 1185 | * |
| 1186 | * @param list<array{float,float}> $points |
| 1187 | */ |
| 1188 | public function addPolyline(Page|CorePage $page, array $points): PolyLineAnnotation |
| 1189 | { |
| 1190 | [$rectArr, $vertices] = $this->pointsToRectAndArray($points); |
| 1191 | $annotation = new PolyLineAnnotation($rectArr); |
| 1192 | $annotation->vertices = $vertices; |
| 1193 | return $this->attachAnnotation($page, $annotation); |
| 1194 | } |
| 1195 | |
| 1196 | /** |
| 1197 | * Add a rectangular shape annotation — visible as a stroked |
| 1198 | * rectangle on the page. |
| 1199 | */ |
| 1200 | public function addSquare(Page|CorePage $page, Rectangle $rect): SquareAnnotation |
| 1201 | { |
| 1202 | $annotation = new SquareAnnotation($this->rectToPdfArray($rect)); |
| 1203 | return $this->attachAnnotation($page, $annotation); |
| 1204 | } |
| 1205 | |
| 1206 | /** |
| 1207 | * Add a circular / elliptical shape annotation — visible as a |
| 1208 | * stroked ellipse inscribed in the rectangle. |
| 1209 | */ |
| 1210 | public function addCircleAnnotation(Page|CorePage $page, Rectangle $rect): CircleAnnotation |
| 1211 | { |
| 1212 | $annotation = new CircleAnnotation($this->rectToPdfArray($rect)); |
| 1213 | return $this->attachAnnotation($page, $annotation); |
| 1214 | } |
| 1215 | |
| 1216 | /** |
| 1217 | * Add a rubber-stamp annotation. `$stampName` is the standard |
| 1218 | * stamp identifier (`Approved`, `Confidential`, `Draft`, etc.). |
| 1219 | */ |
| 1220 | public function addStamp( |
| 1221 | Page|CorePage $page, |
| 1222 | Rectangle $rect, |
| 1223 | string $stampName = 'Draft', |
| 1224 | ): StampAnnotation { |
| 1225 | $annotation = new StampAnnotation($this->rectToPdfArray($rect)); |
| 1226 | $annotation->name = new PdfName($stampName); |
| 1227 | return $this->attachAnnotation($page, $annotation); |
| 1228 | } |
| 1229 | |
| 1230 | /** |
| 1231 | * Add a watermark annotation — fixed page-level overlay that |
| 1232 | * doesn't print by default (PDF 1.7). |
| 1233 | */ |
| 1234 | public function addWatermarkAnnotation(Page|CorePage $page, Rectangle $rect): WatermarkAnnotation |
| 1235 | { |
| 1236 | $annotation = new WatermarkAnnotation($this->rectToPdfArray($rect)); |
| 1237 | return $this->attachAnnotation($page, $annotation); |
| 1238 | } |
| 1239 | |
| 1240 | /** |
| 1241 | * Add a sound annotation. Caller supplies a pre-constructed |
| 1242 | * {@see \Phpdftk\Pdf\Core\Multimedia\Sound} stream (with sample |
| 1243 | * rate + bytes). Deprecated in PDF 2.0 — prefer Rich Media for |
| 1244 | * new documents. |
| 1245 | */ |
| 1246 | public function addSoundAnnotation( |
| 1247 | Page|CorePage $page, |
| 1248 | Rectangle $rect, |
| 1249 | \Phpdftk\Pdf\Core\Multimedia\Sound $sound, |
| 1250 | ): SoundAnnotation { |
| 1251 | $this->writer->register($sound); |
| 1252 | $annotation = new SoundAnnotation($this->rectToPdfArray($rect)); |
| 1253 | $annotation->sound = new PdfReference($sound->objectNumber); |
| 1254 | return $this->attachAnnotation($page, $annotation); |
| 1255 | } |
| 1256 | |
| 1257 | /** |
| 1258 | * Add a movie annotation. Deprecated in PDF 2.0 in favour of |
| 1259 | * Rich Media / Screen annotations; provided for legacy workflows. |
| 1260 | */ |
| 1261 | public function addMovieAnnotation( |
| 1262 | Page|CorePage $page, |
| 1263 | Rectangle $rect, |
| 1264 | \Phpdftk\Pdf\Core\Multimedia\Movie $movie, |
| 1265 | ): MovieAnnotation { |
| 1266 | $this->writer->register($movie); |
| 1267 | $annotation = new MovieAnnotation($this->rectToPdfArray($rect)); |
| 1268 | $annotation->movie = new PdfReference($movie->objectNumber); |
| 1269 | return $this->attachAnnotation($page, $annotation); |
| 1270 | } |
| 1271 | |
| 1272 | /** |
| 1273 | * Add a 3D annotation. Caller supplies a pre-constructed |
| 1274 | * {@see \Phpdftk\Pdf\Core\ThreeD\ThreeDStream} containing the U3D |
| 1275 | * or PRC payload. |
| 1276 | */ |
| 1277 | public function add3DAnnotation( |
| 1278 | Page|CorePage $page, |
| 1279 | Rectangle $rect, |
| 1280 | \Phpdftk\Pdf\Core\ThreeD\ThreeDStream $stream, |
| 1281 | ): ThreeDAnnotation { |
| 1282 | $this->writer->register($stream); |
| 1283 | $annotation = new ThreeDAnnotation($this->rectToPdfArray($rect)); |
| 1284 | $annotation->dd = new PdfReference($stream->objectNumber); |
| 1285 | return $this->attachAnnotation($page, $annotation); |
| 1286 | } |
| 1287 | |
| 1288 | /** |
| 1289 | * @template T of CoreAnnotation |
| 1290 | * @param T $annotation |
| 1291 | * @return T |
| 1292 | */ |
| 1293 | private function attachAnnotation(Page|CorePage $page, CoreAnnotation $annotation): CoreAnnotation |
| 1294 | { |
| 1295 | $corePage = $page instanceof Page ? $page->corePage() : $page; |
| 1296 | $this->writer->register($annotation); |
| 1297 | $corePage->annots[] = new PdfReference($annotation->objectNumber); |
| 1298 | return $annotation; |
| 1299 | } |
| 1300 | |
| 1301 | private function rectToPdfArray(Rectangle $rect): PdfArray |
| 1302 | { |
| 1303 | [$llx, $lly, $urx, $ury] = $rect->toArray(); |
| 1304 | return new PdfArray([ |
| 1305 | new PdfNumber($llx), |
| 1306 | new PdfNumber($lly), |
| 1307 | new PdfNumber($urx), |
| 1308 | new PdfNumber($ury), |
| 1309 | ]); |
| 1310 | } |
| 1311 | |
| 1312 | /** |
| 1313 | * Convert a list of Rectangles representing text-markup spans |
| 1314 | * into the bounding rect + quad-points array required by |
| 1315 | * highlight / underline / squiggly / strikeout annotations. |
| 1316 | * |
| 1317 | * @param list<Rectangle> $quads |
| 1318 | * @return array{0: PdfArray, 1: PdfArray} |
| 1319 | */ |
| 1320 | private function quadsToArrays(array $quads): array |
| 1321 | { |
| 1322 | if ($quads === []) { |
| 1323 | throw new \InvalidArgumentException('At least one quad rectangle is required.'); |
| 1324 | } |
| 1325 | $minX = PHP_FLOAT_MAX; |
| 1326 | $minY = PHP_FLOAT_MAX; |
| 1327 | $maxX = -PHP_FLOAT_MAX; |
| 1328 | $maxY = -PHP_FLOAT_MAX; |
| 1329 | $quadPoints = []; |
| 1330 | foreach ($quads as $q) { |
| 1331 | [$llx, $lly, $urx, $ury] = $q->toArray(); |
| 1332 | $minX = min($minX, $llx); |
| 1333 | $minY = min($minY, $lly); |
| 1334 | $maxX = max($maxX, $urx); |
| 1335 | $maxY = max($maxY, $ury); |
| 1336 | // PDF QuadPoints order: ULx ULy URx URy LLx LLy LRx LRy. |
| 1337 | array_push( |
| 1338 | $quadPoints, |
| 1339 | new PdfNumber($llx), |
| 1340 | new PdfNumber($ury), |
| 1341 | new PdfNumber($urx), |
| 1342 | new PdfNumber($ury), |
| 1343 | new PdfNumber($llx), |
| 1344 | new PdfNumber($lly), |
| 1345 | new PdfNumber($urx), |
| 1346 | new PdfNumber($lly), |
| 1347 | ); |
| 1348 | } |
| 1349 | $rectArr = new PdfArray([ |
| 1350 | new PdfNumber($minX), |
| 1351 | new PdfNumber($minY), |
| 1352 | new PdfNumber($maxX), |
| 1353 | new PdfNumber($maxY), |
| 1354 | ]); |
| 1355 | return [$rectArr, new PdfArray($quadPoints)]; |
| 1356 | } |
| 1357 | |
| 1358 | /** |
| 1359 | * @param list<array{float,float}> $points |
| 1360 | * @return array{0: PdfArray, 1: PdfArray} |
| 1361 | */ |
| 1362 | private function pointsToRectAndArray(array $points): array |
| 1363 | { |
| 1364 | if ($points === []) { |
| 1365 | throw new \InvalidArgumentException('At least one point is required.'); |
| 1366 | } |
| 1367 | $minX = PHP_FLOAT_MAX; |
| 1368 | $minY = PHP_FLOAT_MAX; |
| 1369 | $maxX = -PHP_FLOAT_MAX; |
| 1370 | $maxY = -PHP_FLOAT_MAX; |
| 1371 | $flat = []; |
| 1372 | foreach ($points as [$x, $y]) { |
| 1373 | $minX = min($minX, $x); |
| 1374 | $minY = min($minY, $y); |
| 1375 | $maxX = max($maxX, $x); |
| 1376 | $maxY = max($maxY, $y); |
| 1377 | $flat[] = new PdfNumber($x); |
| 1378 | $flat[] = new PdfNumber($y); |
| 1379 | } |
| 1380 | $rectArr = new PdfArray([ |
| 1381 | new PdfNumber($minX), |
| 1382 | new PdfNumber($minY), |
| 1383 | new PdfNumber($maxX), |
| 1384 | new PdfNumber($maxY), |
| 1385 | ]); |
| 1386 | return [$rectArr, new PdfArray($flat)]; |
| 1387 | } |
| 1388 | |
| 1389 | // ----------------------------------------------------------------------- |
| 1390 | // Navigation: outlines, page labels, named destinations |
| 1391 | // ----------------------------------------------------------------------- |
| 1392 | |
| 1393 | /** |
| 1394 | * Register an Outline root and wire it to the Catalog. Returns the |
| 1395 | * Outline for further configuration (setting First/Last/Count). |
| 1396 | */ |
| 1397 | public function setOutline(Outline $outline): Outline |
| 1398 | { |
| 1399 | $this->writer->register($outline); |
| 1400 | $this->writer->getCatalog()->outlines = new PdfReference($outline->objectNumber); |
| 1401 | return $outline; |
| 1402 | } |
| 1403 | |
| 1404 | /** |
| 1405 | * Register an OutlineItem and return a reference to it. Callers |
| 1406 | * are responsible for linking Prev/Next/First/Last/Parent. |
| 1407 | */ |
| 1408 | public function addOutlineItem(OutlineItem $item): PdfReference |
| 1409 | { |
| 1410 | return $this->writer->register($item); |
| 1411 | } |
| 1412 | |
| 1413 | /** |
| 1414 | * Set a flat page-labels number tree on the Catalog. Pass an |
| 1415 | * associative array of zero-based page index => PageLabel. |
| 1416 | * |
| 1417 | * Example: [0 => $frontMatter, 4 => $mainContent] |
| 1418 | * |
| 1419 | * @param array<int, PageLabel> $labels |
| 1420 | */ |
| 1421 | public function setPageLabels(array $labels): self |
| 1422 | { |
| 1423 | $nums = []; |
| 1424 | ksort($labels); |
| 1425 | foreach ($labels as $pageIndex => $label) { |
| 1426 | $this->writer->register($label); |
| 1427 | $nums[] = new PdfNumber($pageIndex); |
| 1428 | $nums[] = new PdfReference($label->objectNumber); |
| 1429 | } |
| 1430 | |
| 1431 | $tree = new PdfDictionary(['Nums' => new PdfArray($nums)]); |
| 1432 | $treeStream = new PdfStream($tree, ''); |
| 1433 | $this->writer->register($treeStream); |
| 1434 | $this->writer->getCatalog()->pageLabels = new PdfReference($treeStream->objectNumber); |
| 1435 | return $this; |
| 1436 | } |
| 1437 | |
| 1438 | /** |
| 1439 | * Set named destinations on the document. Pass an associative |
| 1440 | * array of name => Destination. |
| 1441 | * |
| 1442 | * @param array<string, Destination> $destinations |
| 1443 | */ |
| 1444 | public function setNamedDestinations(array $destinations): self |
| 1445 | { |
| 1446 | ksort($destinations); |
| 1447 | $namesArray = []; |
| 1448 | foreach ($destinations as $name => $dest) { |
| 1449 | $namesArray[] = new PdfString($name); |
| 1450 | $namesArray[] = $dest; |
| 1451 | } |
| 1452 | |
| 1453 | $nameTree = new NameTree(); |
| 1454 | $nameTree->names = new PdfArray($namesArray); |
| 1455 | $this->writer->register($nameTree); |
| 1456 | |
| 1457 | $namesDict = new PdfDictionary(['Dests' => new PdfReference($nameTree->objectNumber)]); |
| 1458 | $namesDictObj = new PdfStream($namesDict, ''); |
| 1459 | $this->writer->register($namesDictObj); |
| 1460 | $this->writer->getCatalog()->names = new PdfReference($namesDictObj->objectNumber); |
| 1461 | return $this; |
| 1462 | } |
| 1463 | } |