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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\Function\FunctionType4; |
| 54 | use Phpdftk\Pdf\Core\Graphics\Pattern\ShadingPattern; |
| 55 | use Phpdftk\Pdf\Core\Graphics\Shading\ShadingType1; |
| 56 | use Phpdftk\Pdf\Core\Graphics\Shading\ShadingType2; |
| 57 | use Phpdftk\Pdf\Core\Graphics\Shading\ShadingType3; |
| 58 | use Phpdftk\Pdf\Core\Annotation\WidgetAnnotation; |
| 59 | use Phpdftk\Pdf\Core\Graphics\XObject\FormXObject; |
| 60 | use Phpdftk\Pdf\Core\Interactive\Form\AcroForm; |
| 61 | use Phpdftk\Pdf\Core\Interactive\Form\ButtonField; |
| 62 | use Phpdftk\Pdf\Core\Interactive\Form\ChoiceField; |
| 63 | use Phpdftk\Pdf\Core\Interactive\Form\SignatureField; |
| 64 | use Phpdftk\Pdf\Core\Interactive\Form\TextField; |
| 65 | use Phpdftk\Pdf\Writer\Form\CheckboxOptions; |
| 66 | use Phpdftk\Pdf\Writer\Form\ChoiceFieldOptions; |
| 67 | use Phpdftk\Pdf\Writer\Form\TextFieldOptions; |
| 68 | use Phpdftk\Pdf\Core\PdfArray; |
| 69 | use Phpdftk\Pdf\Core\PdfDictionary; |
| 70 | use Phpdftk\Pdf\Core\PdfName; |
| 71 | use Phpdftk\Pdf\Core\PdfNumber; |
| 72 | use Phpdftk\Pdf\Core\PdfReference; |
| 73 | use Phpdftk\Pdf\Core\PdfStream; |
| 74 | use Phpdftk\Pdf\Core\PdfString; |
| 75 | use Phpdftk\Pdf\Core\PdfVersion; |
| 76 | |
| 77 | /** |
| 78 | * Level 2 — friendly API over the PDF document object model. |
| 79 | * |
| 80 | * `PdfDoc` wraps a {@see PdfWriter} and exposes one method per "thing |
| 81 | * a user wants to put in a document": pages, outlines, page labels, |
| 82 | * named destinations, info/metadata. Later phases extend this with |
| 83 | * annotation builders, form field builders, file attachments, viewer |
| 84 | * preferences, action factories, layers, gradients, and more. |
| 85 | * |
| 86 | * The split between `PdfDoc` and `PdfWriter` is: |
| 87 | * - `PdfDoc` is about *what is in the document* (Catalog conveniences) |
| 88 | * - `PdfWriter` is about *how bytes get written* (fonts, images, |
| 89 | * content streams, signing, encryption, conformance, save) |
| 90 | * |
| 91 | * Drop down to the underlying {@see PdfWriter} via {@see writer()} |
| 92 | * when you need direct byte/resource control (custom fonts, |
| 93 | * encryption, etc.). |
| 94 | * |
| 95 | * @api |
| 96 | */ |
| 97 | class PdfDoc |
| 98 | { |
| 99 | private PdfWriter $writer; |
| 100 | |
| 101 | /** Lazily-created OCPropertiesDict, shared across {@see addLayer()} calls. */ |
| 102 | private ?OCPropertiesDict $ocPropertiesDict = null; |
| 103 | |
| 104 | /** Lazily-created AcroForm, shared across all form-field builders. */ |
| 105 | private ?AcroForm $acroForm = null; |
| 106 | |
| 107 | public function __construct( |
| 108 | bool $compressStreams = true, |
| 109 | PdfVersion|string $version = PdfFileWriter::DEFAULT_PDF_VERSION, |
| 110 | ) { |
| 111 | $this->writer = new PdfWriter($compressStreams, $version); |
| 112 | } |
| 113 | |
| 114 | /** |
| 115 | * Wrap an existing PdfWriter — typically one already configured |
| 116 | * with conformance, signing, or encryption — and expose the |
| 117 | * friendly API on top of it. |
| 118 | */ |
| 119 | public static function wrap(PdfWriter $writer): self |
| 120 | { |
| 121 | $instance = (new \ReflectionClass(self::class))->newInstanceWithoutConstructor(); |
| 122 | $instance->writer = $writer; |
| 123 | return $instance; |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * Escape hatch: the underlying PdfWriter for byte/resource control. |
| 128 | */ |
| 129 | public function writer(): PdfWriter |
| 130 | { |
| 131 | return $this->writer; |
| 132 | } |
| 133 | |
| 134 | /** |
| 135 | * Add a new page. Friendly wrapper that returns the same |
| 136 | * {@see Page} handle as PdfWriter::addPage(). |
| 137 | */ |
| 138 | public function addPage(Rectangle|float $widthOrRect = 612, float $height = 792): Page |
| 139 | { |
| 140 | return $this->writer->addPage($widthOrRect, $height); |
| 141 | } |
| 142 | |
| 143 | // ----------------------------------------------------------------------- |
| 144 | // Document metadata (Info dict + XMP) |
| 145 | // ----------------------------------------------------------------------- |
| 146 | |
| 147 | public function setInfo(Info $info): self |
| 148 | { |
| 149 | $this->writer->fileWriter()->setInfo($info); |
| 150 | return $this; |
| 151 | } |
| 152 | |
| 153 | public function setTitle(string $title): self |
| 154 | { |
| 155 | $this->ensureInfo()->title = new PdfString($title); |
| 156 | return $this; |
| 157 | } |
| 158 | |
| 159 | public function setAuthor(string $author): self |
| 160 | { |
| 161 | $this->ensureInfo()->author = new PdfString($author); |
| 162 | return $this; |
| 163 | } |
| 164 | |
| 165 | public function setSubject(string $subject): self |
| 166 | { |
| 167 | $this->ensureInfo()->subject = new PdfString($subject); |
| 168 | return $this; |
| 169 | } |
| 170 | |
| 171 | public function setKeywords(string $keywords): self |
| 172 | { |
| 173 | $this->ensureInfo()->keywords = new PdfString($keywords); |
| 174 | return $this; |
| 175 | } |
| 176 | |
| 177 | public function setCreator(string $creator): self |
| 178 | { |
| 179 | $this->ensureInfo()->creator = new PdfString($creator); |
| 180 | return $this; |
| 181 | } |
| 182 | |
| 183 | private function ensureInfo(): Info |
| 184 | { |
| 185 | $info = $this->writer->fileWriter()->getInfo(); |
| 186 | if ($info === null) { |
| 187 | $info = new Info(); |
| 188 | $this->writer->fileWriter()->setInfo($info); |
| 189 | } |
| 190 | return $info; |
| 191 | } |
| 192 | |
| 193 | /** |
| 194 | * Attach an XMP metadata stream to the document catalog. |
| 195 | */ |
| 196 | public function setMetadata(string $xmpXml): self |
| 197 | { |
| 198 | $metadataStream = new MetadataStream($xmpXml); |
| 199 | $this->writer->register($metadataStream); |
| 200 | $this->writer->getCatalog()->metadata = new PdfReference($metadataStream->objectNumber); |
| 201 | return $this; |
| 202 | } |
| 203 | |
| 204 | /** |
| 205 | * Build and attach XMP metadata from the document's Info dictionary. |
| 206 | * |
| 207 | * Syncs Title, Author, Subject, Creator, Producer from the Info |
| 208 | * dict into XMP properties (dc:title, dc:creator, dc:description, |
| 209 | * xmp:CreatorTool, pdf:Producer) and attaches the result as a |
| 210 | * MetadataStream on the Catalog. |
| 211 | */ |
| 212 | public function syncInfoToMetadata(): self |
| 213 | { |
| 214 | $info = $this->writer->fileWriter()->getInfo(); |
| 215 | if ($info === null) { |
| 216 | return $this; |
| 217 | } |
| 218 | |
| 219 | $packet = \Phpdftk\Xmp\XmpPacket::create(); |
| 220 | if ($info->title !== null) { |
| 221 | $packet = $packet->set('dc:title', $info->title->value); |
| 222 | } |
| 223 | if ($info->author !== null) { |
| 224 | $packet = $packet->set('dc:creator', $info->author->value); |
| 225 | } |
| 226 | if ($info->subject !== null) { |
| 227 | $packet = $packet->set('dc:description', $info->subject->value); |
| 228 | } |
| 229 | if ($info->creator !== null) { |
| 230 | $packet = $packet->set('xmp:CreatorTool', $info->creator->value); |
| 231 | } |
| 232 | if ($info->producer !== null) { |
| 233 | $packet = $packet->set('pdf:Producer', $info->producer->value); |
| 234 | } |
| 235 | |
| 236 | $xmpXml = (new \Phpdftk\Xmp\XmpWriter())->serialize($packet); |
| 237 | return $this->setMetadata($xmpXml); |
| 238 | } |
| 239 | |
| 240 | // ----------------------------------------------------------------------- |
| 241 | // Form fields |
| 242 | // ----------------------------------------------------------------------- |
| 243 | |
| 244 | /** |
| 245 | * Add a single-line (or multi-line) text input to the page. The |
| 246 | * field is registered in the document's AcroForm and a Widget |
| 247 | * annotation is attached to the page's `/Annots` array. |
| 248 | * |
| 249 | * Field flags (`/Ff`) are derived from {@see TextFieldOptions}: |
| 250 | * - required → bit 2 (0x0002) |
| 251 | * - readOnly → bit 1 (0x0001) |
| 252 | * - multiline → bit 13 (0x1000) |
| 253 | * - password → bit 14 (0x2000) |
| 254 | */ |
| 255 | public function addTextField( |
| 256 | string $name, |
| 257 | Page|CorePage $page, |
| 258 | Rectangle $rect, |
| 259 | ?TextFieldOptions $options = null, |
| 260 | ): TextField { |
| 261 | $options ??= new TextFieldOptions(); |
| 262 | $field = new TextField(); |
| 263 | $field->t = new PdfString($name); |
| 264 | $field->da = new PdfString($options->defaultAppearance); |
| 265 | $field->ff = $this->computeFieldFlags($options->required, $options->readOnly) |
| 266 | | ($options->multiline ? 1 << 12 : 0) |
| 267 | | ($options->password ? 1 << 13 : 0); |
| 268 | if ($options->maxLength !== null) { |
| 269 | $field->maxLen = $options->maxLength; |
| 270 | } |
| 271 | if ($options->defaultValue !== null) { |
| 272 | $field->v = new PdfString($options->defaultValue); |
| 273 | $field->dv = new PdfString($options->defaultValue); |
| 274 | } |
| 275 | $this->attachFieldWidget($page, $rect, $field); |
| 276 | return $field; |
| 277 | } |
| 278 | |
| 279 | /** |
| 280 | * Add a checkbox to the page. The export value (the string |
| 281 | * recorded as the field's `/V` when checked) defaults to `Yes`. |
| 282 | */ |
| 283 | public function addCheckbox( |
| 284 | string $name, |
| 285 | Page|CorePage $page, |
| 286 | Rectangle $rect, |
| 287 | ?CheckboxOptions $options = null, |
| 288 | ): ButtonField { |
| 289 | $options ??= new CheckboxOptions(); |
| 290 | $field = new ButtonField(); |
| 291 | $field->t = new PdfString($name); |
| 292 | $field->ff = $this->computeFieldFlags($options->required, $options->readOnly); |
| 293 | if ($options->defaultChecked) { |
| 294 | $field->v = new PdfName($options->onValue); |
| 295 | $field->dv = new PdfName($options->onValue); |
| 296 | } else { |
| 297 | $field->v = new PdfName('Off'); |
| 298 | $field->dv = new PdfName('Off'); |
| 299 | } |
| 300 | $this->attachFieldWidget($page, $rect, $field); |
| 301 | return $field; |
| 302 | } |
| 303 | |
| 304 | /** |
| 305 | * Add a drop-down (combo) or list-box choice field. `$options` |
| 306 | * carries the list of allowed `[value, label]` choices and the |
| 307 | * usual required / read-only flags. |
| 308 | */ |
| 309 | public function addChoiceField( |
| 310 | string $name, |
| 311 | Page|CorePage $page, |
| 312 | Rectangle $rect, |
| 313 | ChoiceFieldOptions $options, |
| 314 | ): ChoiceField { |
| 315 | $field = new ChoiceField(); |
| 316 | $field->t = new PdfString($name); |
| 317 | $field->ff = $this->computeFieldFlags($options->required, $options->readOnly) |
| 318 | | ($options->combo ? 1 << 17 : 0) |
| 319 | | ($options->editable ? 1 << 18 : 0) |
| 320 | | ($options->sort ? 1 << 19 : 0) |
| 321 | | ($options->multiSelect ? 1 << 21 : 0); |
| 322 | |
| 323 | $optItems = []; |
| 324 | foreach ($options->choices as $choice) { |
| 325 | if (is_array($choice)) { |
| 326 | $optItems[] = new PdfArray([ |
| 327 | new PdfString($choice[0]), |
| 328 | new PdfString($choice[1]), |
| 329 | ]); |
| 330 | } else { |
| 331 | $optItems[] = new PdfString($choice); |
| 332 | } |
| 333 | } |
| 334 | $field->opt = new PdfArray($optItems); |
| 335 | if ($options->defaultValue !== null) { |
| 336 | $field->v = new PdfString($options->defaultValue); |
| 337 | $field->dv = new PdfString($options->defaultValue); |
| 338 | } |
| 339 | $this->attachFieldWidget($page, $rect, $field); |
| 340 | return $field; |
| 341 | } |
| 342 | |
| 343 | /** |
| 344 | * Add a signature field placeholder. Pair with |
| 345 | * {@see PdfWriter::setSigner()} to actually sign the document at |
| 346 | * generate time. |
| 347 | */ |
| 348 | public function addSignatureField( |
| 349 | string $name, |
| 350 | Page|CorePage $page, |
| 351 | Rectangle $rect, |
| 352 | ): SignatureField { |
| 353 | $field = new SignatureField(); |
| 354 | $field->t = new PdfString($name); |
| 355 | $this->attachFieldWidget($page, $rect, $field); |
| 356 | |
| 357 | // Ensure the AcroForm declares /SigFlags = 3 (SignaturesExist |
| 358 | // + AppendOnly) so viewers handle the file as signed-ready. |
| 359 | $acroForm = $this->ensureAcroForm(); |
| 360 | $acroForm->sigFlags = ($acroForm->sigFlags ?? 0) | 3; |
| 361 | return $field; |
| 362 | } |
| 363 | |
| 364 | private function computeFieldFlags(bool $required, bool $readOnly): int |
| 365 | { |
| 366 | return ($readOnly ? 1 : 0) | ($required ? 2 : 0); |
| 367 | } |
| 368 | |
| 369 | /** |
| 370 | * Wire a field into both the AcroForm fields list and a Widget |
| 371 | * annotation on the page. The Widget references the field as its |
| 372 | * /Parent; the field's /Kids list points back at the widget. |
| 373 | */ |
| 374 | private function attachFieldWidget( |
| 375 | Page|CorePage $page, |
| 376 | Rectangle $rect, |
| 377 | \Phpdftk\Pdf\Core\Interactive\Form\Field $field, |
| 378 | ): void { |
| 379 | $widget = new WidgetAnnotation($this->rectToPdfArray($rect)); |
| 380 | $this->writer->register($widget); |
| 381 | $this->writer->register($field); |
| 382 | |
| 383 | $field->kids[] = new PdfReference($widget->objectNumber); |
| 384 | $widget->parent = new PdfReference($field->objectNumber); |
| 385 | |
| 386 | $corePage = $page instanceof Page ? $page->corePage() : $page; |
| 387 | $corePage->annots[] = new PdfReference($widget->objectNumber); |
| 388 | |
| 389 | $acroForm = $this->ensureAcroForm(); |
| 390 | $acroForm->fields[] = new PdfReference($field->objectNumber); |
| 391 | } |
| 392 | |
| 393 | private function ensureAcroForm(): AcroForm |
| 394 | { |
| 395 | if ($this->acroForm !== null) { |
| 396 | return $this->acroForm; |
| 397 | } |
| 398 | $form = new AcroForm(); |
| 399 | // NeedAppearances asks viewers to generate widget appearances |
| 400 | // on open — appropriate when the writer doesn't pre-build /AP. |
| 401 | $form->needAppearances = true; |
| 402 | $this->writer->register($form); |
| 403 | $this->writer->getCatalog()->acroForm = new PdfReference($form->objectNumber); |
| 404 | $this->acroForm = $form; |
| 405 | return $form; |
| 406 | } |
| 407 | |
| 408 | // ----------------------------------------------------------------------- |
| 409 | // Gradients |
| 410 | // ----------------------------------------------------------------------- |
| 411 | |
| 412 | /** |
| 413 | * Register a two-stop axial (linear) gradient. The returned |
| 414 | * {@see ShadingPattern} can be used as a fill via |
| 415 | * {@see Writer\Page::useGradient()}. |
| 416 | * |
| 417 | * @param array{float,float,float} $startRgb RGB at gradient origin. |
| 418 | * @param array{float,float,float} $endRgb RGB at gradient end. |
| 419 | */ |
| 420 | public function addLinearGradient( |
| 421 | Point $from, |
| 422 | Point $to, |
| 423 | array $startRgb, |
| 424 | array $endRgb, |
| 425 | bool $extend = false, |
| 426 | ): ShadingPattern { |
| 427 | $fn = $this->buildRgbFunction($startRgb, $endRgb); |
| 428 | $shading = new ShadingType2( |
| 429 | new PdfName('DeviceRGB'), |
| 430 | new PdfArray([ |
| 431 | new PdfNumber($from->x), |
| 432 | new PdfNumber($from->y), |
| 433 | new PdfNumber($to->x), |
| 434 | new PdfNumber($to->y), |
| 435 | ]), |
| 436 | new PdfReference($fn->objectNumber), |
| 437 | ); |
| 438 | if ($extend) { |
| 439 | $shading->extend = self::extendBothEnds(); |
| 440 | } |
| 441 | $this->writer->register($shading); |
| 442 | |
| 443 | $pattern = new ShadingPattern(new PdfReference($shading->objectNumber)); |
| 444 | $this->writer->register($pattern); |
| 445 | return $pattern; |
| 446 | } |
| 447 | |
| 448 | /** |
| 449 | * Register a two-stop radial gradient. `$inner` / `$outer` are |
| 450 | * concentric (or non-concentric) circles defining the gradient |
| 451 | * boundary. |
| 452 | * |
| 453 | * @param array{float,float,float} $startRgb RGB at inner radius. |
| 454 | * @param array{float,float,float} $endRgb RGB at outer radius. |
| 455 | */ |
| 456 | public function addRadialGradient( |
| 457 | Point $innerCenter, |
| 458 | float $innerRadius, |
| 459 | Point $outerCenter, |
| 460 | float $outerRadius, |
| 461 | array $startRgb, |
| 462 | array $endRgb, |
| 463 | bool $extend = false, |
| 464 | ): ShadingPattern { |
| 465 | $fn = $this->buildRgbFunction($startRgb, $endRgb); |
| 466 | $shading = new ShadingType3( |
| 467 | new PdfName('DeviceRGB'), |
| 468 | new PdfArray([ |
| 469 | new PdfNumber($innerCenter->x), |
| 470 | new PdfNumber($innerCenter->y), |
| 471 | new PdfNumber($innerRadius), |
| 472 | new PdfNumber($outerCenter->x), |
| 473 | new PdfNumber($outerCenter->y), |
| 474 | new PdfNumber($outerRadius), |
| 475 | ]), |
| 476 | new PdfReference($fn->objectNumber), |
| 477 | ); |
| 478 | if ($extend) { |
| 479 | $shading->extend = self::extendBothEnds(); |
| 480 | } |
| 481 | $this->writer->register($shading); |
| 482 | |
| 483 | $pattern = new ShadingPattern(new PdfReference($shading->objectNumber)); |
| 484 | $this->writer->register($pattern); |
| 485 | return $pattern; |
| 486 | } |
| 487 | |
| 488 | /** |
| 489 | * Register an N-stop axial (linear) gradient. Each stop is a |
| 490 | * `{offset, rgb}` pair with `offset` in [0, 1]. Stops must be |
| 491 | * sorted ascending and start at 0 / end at 1 (the caller is |
| 492 | * responsible for normalising — typical CSS gradient resolution |
| 493 | * already does this). Two-stop input falls through to the same |
| 494 | * Type-2 function as `addLinearGradient`; three-or-more produces |
| 495 | * a Type-3 stitching function with N-1 Type-2 sub-functions. |
| 496 | * |
| 497 | * @param list<array{offset: float, rgb: array{float, float, float}, alpha?: float}> $stops |
| 498 | */ |
| 499 | public function addLinearGradientStops( |
| 500 | Point $from, |
| 501 | Point $to, |
| 502 | array $stops, |
| 503 | bool $extend = false, |
| 504 | ): ShadingPattern { |
| 505 | $fn = $this->buildRgbStopFunction($stops); |
| 506 | $shading = new ShadingType2( |
| 507 | new PdfName('DeviceRGB'), |
| 508 | new PdfArray([ |
| 509 | new PdfNumber($from->x), |
| 510 | new PdfNumber($from->y), |
| 511 | new PdfNumber($to->x), |
| 512 | new PdfNumber($to->y), |
| 513 | ]), |
| 514 | new PdfReference($fn->objectNumber), |
| 515 | ); |
| 516 | if ($extend) { |
| 517 | $shading->extend = self::extendBothEnds(); |
| 518 | } |
| 519 | $this->writer->register($shading); |
| 520 | |
| 521 | $pattern = new ShadingPattern(new PdfReference($shading->objectNumber)); |
| 522 | $this->writer->register($pattern); |
| 523 | return $pattern; |
| 524 | } |
| 525 | |
| 526 | /** |
| 527 | * Register an N-stop radial gradient. Same stop semantics as |
| 528 | * {@see addLinearGradientStops()}. |
| 529 | * |
| 530 | * @param list<array{offset: float, rgb: array{float, float, float}, alpha?: float}> $stops |
| 531 | */ |
| 532 | public function addRadialGradientStops( |
| 533 | Point $innerCenter, |
| 534 | float $innerRadius, |
| 535 | Point $outerCenter, |
| 536 | float $outerRadius, |
| 537 | array $stops, |
| 538 | bool $extend = false, |
| 539 | ): ShadingPattern { |
| 540 | $fn = $this->buildRgbStopFunction($stops); |
| 541 | $shading = new ShadingType3( |
| 542 | new PdfName('DeviceRGB'), |
| 543 | new PdfArray([ |
| 544 | new PdfNumber($innerCenter->x), |
| 545 | new PdfNumber($innerCenter->y), |
| 546 | new PdfNumber($innerRadius), |
| 547 | new PdfNumber($outerCenter->x), |
| 548 | new PdfNumber($outerCenter->y), |
| 549 | new PdfNumber($outerRadius), |
| 550 | ]), |
| 551 | new PdfReference($fn->objectNumber), |
| 552 | ); |
| 553 | if ($extend) { |
| 554 | $shading->extend = self::extendBothEnds(); |
| 555 | } |
| 556 | $this->writer->register($shading); |
| 557 | |
| 558 | $pattern = new ShadingPattern(new PdfReference($shading->objectNumber)); |
| 559 | $this->writer->register($pattern); |
| 560 | return $pattern; |
| 561 | } |
| 562 | |
| 563 | /** |
| 564 | * Register a CSS `conic-gradient()` as a function-based shading |
| 565 | * (ShadingType 1, ISO 32000-2 §8.7.4.5.2) driven by a PostScript |
| 566 | * calculator function (FunctionType 4) that maps each point (x, y) |
| 567 | * to its sweep angle around `$center` and interpolates the stop list. |
| 568 | * |
| 569 | * PDF has no native angular shading, so the calculator computes the |
| 570 | * CSS angle `atan2(x - cx, y - cy)` (0° at 12 o'clock, increasing |
| 571 | * clockwise in the PDF y-up space), subtracts the `from` angle, wraps |
| 572 | * to [0, 1), then walks the stop segments. Coordinates are absolute |
| 573 | * page-space (the `$domain` rect), with an identity pattern matrix — |
| 574 | * mirroring the linear path so pattern anchoring is CTM-independent. |
| 575 | * |
| 576 | * @param list<array{offset: float, rgb: array{float, float, float}, alpha?: float}> $stops |
| 577 | * Resolved stops, offsets in [0, 1] ascending, first at 0 / last at 1. |
| 578 | * @param array{float, float, float, float} $domain [x0, x1, y0, y1] box rect. |
| 579 | */ |
| 580 | public function addConicShadingStops( |
| 581 | Point $center, |
| 582 | float $fromAngleDeg, |
| 583 | array $stops, |
| 584 | array $domain, |
| 585 | bool $repeating = false, |
| 586 | ): ShadingPattern { |
| 587 | $postScript = $this->buildConicPostScript( |
| 588 | $center->x, |
| 589 | $center->y, |
| 590 | $fromAngleDeg, |
| 591 | $stops, |
| 592 | $repeating, |
| 593 | ); |
| 594 | $fn = new FunctionType4( |
| 595 | new PdfArray([ |
| 596 | new PdfNumber($domain[0]), |
| 597 | new PdfNumber($domain[1]), |
| 598 | new PdfNumber($domain[2]), |
| 599 | new PdfNumber($domain[3]), |
| 600 | ]), |
| 601 | new PdfArray([ |
| 602 | new PdfNumber(0.0), new PdfNumber(1.0), |
| 603 | new PdfNumber(0.0), new PdfNumber(1.0), |
| 604 | new PdfNumber(0.0), new PdfNumber(1.0), |
| 605 | ]), |
| 606 | $postScript, |
| 607 | ); |
| 608 | $this->writer->register($fn); |
| 609 | $shading = new ShadingType1( |
| 610 | new PdfName('DeviceRGB'), |
| 611 | new PdfReference($fn->objectNumber), |
| 612 | ); |
| 613 | $shading->domain = new PdfArray([ |
| 614 | new PdfNumber($domain[0]), |
| 615 | new PdfNumber($domain[1]), |
| 616 | new PdfNumber($domain[2]), |
| 617 | new PdfNumber($domain[3]), |
| 618 | ]); |
| 619 | $this->writer->register($shading); |
| 620 | |
| 621 | $pattern = new ShadingPattern(new PdfReference($shading->objectNumber)); |
| 622 | $this->writer->register($pattern); |
| 623 | return $pattern; |
| 624 | } |
| 625 | |
| 626 | /** |
| 627 | * Emit the PostScript calculator body for {@see addConicShadingStops()}. |
| 628 | * Consumes `x y` from the stack, leaves `r g b`. |
| 629 | * |
| 630 | * @param list<array{offset: float, rgb: array{float, float, float}, alpha?: float}> $stops |
| 631 | */ |
| 632 | private function buildConicPostScript( |
| 633 | float $cx, |
| 634 | float $cy, |
| 635 | float $fromAngleDeg, |
| 636 | array $stops, |
| 637 | bool $repeating, |
| 638 | ): string { |
| 639 | $n = static fn(float $v): string => rtrim(rtrim(sprintf('%.6f', $v), '0'), '.') ?: '0'; |
| 640 | // Segments between consecutive distinct-offset stops; zero-width |
| 641 | // pairs (hard stops) are skipped so adjacent solid bands abut. |
| 642 | $segments = []; |
| 643 | $count = count($stops); |
| 644 | for ($i = 0; $i < $count - 1; $i++) { |
| 645 | $o0 = $stops[$i]['offset']; |
| 646 | $o1 = $stops[$i + 1]['offset']; |
| 647 | if ($o1 <= $o0) { |
| 648 | continue; |
| 649 | } |
| 650 | $segments[] = [$o0, $o1, $stops[$i]['rgb'], $stops[$i + 1]['rgb']]; |
| 651 | } |
| 652 | if ($segments === []) { |
| 653 | // Degenerate (all stops coincident) — emit a solid fill. |
| 654 | $rgb = $stops[0]['rgb']; |
| 655 | return sprintf('{ pop pop %s %s %s }', $n($rgb[0]), $n($rgb[1]), $n($rgb[2])); |
| 656 | } |
| 657 | // Angle → t ∈ [0,1). Stack in: x y. |
| 658 | $ps = '{ '; |
| 659 | // exch cx sub exch cy sub → dx dy ; atan → CSS angle [0,360) |
| 660 | $ps .= sprintf('exch %s sub exch %s sub atan ', $n($cx), $n($cy)); |
| 661 | // (angle - from) wrapped to [0, 360) — Type-4 `mod` is integer-only, |
| 662 | // so one conditional subtract does the wrap (value ∈ (0, 720)). |
| 663 | $ps .= sprintf('%s sub 360 add dup 360 ge { 360 sub } if 360 div ', $n($fromAngleDeg)); |
| 664 | if ($repeating) { |
| 665 | // Wrap into one cycle = last segment offset, then rescale so the |
| 666 | // stop list (authored over [0, cycle]) tiles the full sweep. |
| 667 | $cycle = $segments[count($segments) - 1][1]; |
| 668 | if ($cycle > 0.0 && $cycle < 1.0) { |
| 669 | $ps .= sprintf('%s div dup floor sub %s mul ', $n($cycle), $n($cycle)); |
| 670 | } |
| 671 | } |
| 672 | // t is on the stack. Build the nested ifelse over segments. |
| 673 | $ps .= $this->buildConicSegmentChain($segments, 0, $n); |
| 674 | $ps .= ' }'; |
| 675 | return $ps; |
| 676 | } |
| 677 | |
| 678 | /** |
| 679 | * Recursively build the `dup <o1> le { interp } { rest } ifelse` chain |
| 680 | * that interpolates the conic stop segments. Consumes `t`, leaves |
| 681 | * `r g b`. |
| 682 | * |
| 683 | * @param list<array{float, float, array{float,float,float}, array{float,float,float}}> $segments |
| 684 | * @param \Closure(float): string $n number formatter |
| 685 | */ |
| 686 | private function buildConicSegmentChain(array $segments, int $i, \Closure $n): string |
| 687 | { |
| 688 | $last = count($segments) - 1; |
| 689 | [$o0, $o1, $c0, $c1] = $segments[$i]; |
| 690 | $span = $o1 - $o0; |
| 691 | $invSpan = $span > 0.0 ? 1.0 / $span : 0.0; |
| 692 | // frac = (t - o0) / span ; then R G B = c0 + frac*(c1 - c0). |
| 693 | $interp = sprintf('%s sub %s mul ', $n($o0), $n($invSpan)) |
| 694 | . sprintf('dup %s mul %s add exch ', $n($c1[0] - $c0[0]), $n($c0[0])) |
| 695 | . sprintf('dup %s mul %s add exch ', $n($c1[1] - $c0[1]), $n($c0[1])) |
| 696 | . sprintf('%s mul %s add', $n($c1[2] - $c0[2]), $n($c0[2])); |
| 697 | if ($i === $last) { |
| 698 | // Final segment is the catch-all else branch (t already on stack). |
| 699 | return $interp; |
| 700 | } |
| 701 | return sprintf('dup %s le { %s } { %s } ifelse', $n($o1), $interp, $this->buildConicSegmentChain($segments, $i + 1, $n)); |
| 702 | } |
| 703 | |
| 704 | /** |
| 705 | * Build a Function object that maps [0,1] → RGB through the given |
| 706 | * stop list. Two stops produce a Type-2 (exponential, n=1, linear |
| 707 | * interpolation). Three or more stops produce a Type-3 stitching |
| 708 | * function: bounds at the intermediate stop offsets, N-1 child |
| 709 | * Type-2 functions each linearly interpolating one segment. |
| 710 | * |
| 711 | * @param list<array{offset: float, rgb: array{float, float, float}, alpha?: float}> $stops |
| 712 | */ |
| 713 | private function buildRgbStopFunction(array $stops): FunctionType2|FunctionType3 |
| 714 | { |
| 715 | if (count($stops) < 2) { |
| 716 | throw new \InvalidArgumentException('Gradient requires at least 2 stops.'); |
| 717 | } |
| 718 | if (count($stops) === 2) { |
| 719 | return $this->buildRgbFunction($stops[0]['rgb'], $stops[1]['rgb']); |
| 720 | } |
| 721 | // Build N-1 segment functions linearly interpolating between |
| 722 | // adjacent stops. |
| 723 | $subFunctions = []; |
| 724 | $bounds = []; |
| 725 | $encode = []; |
| 726 | $count = count($stops); |
| 727 | for ($i = 0; $i < $count - 1; $i++) { |
| 728 | $segment = $this->buildRgbFunction($stops[$i]['rgb'], $stops[$i + 1]['rgb']); |
| 729 | $subFunctions[] = new PdfReference($segment->objectNumber); |
| 730 | if ($i > 0) { |
| 731 | $bounds[] = new PdfNumber($stops[$i]['offset']); |
| 732 | } |
| 733 | // Each segment consumes its full [0, 1] domain. |
| 734 | $encode[] = new PdfNumber(0.0); |
| 735 | $encode[] = new PdfNumber(1.0); |
| 736 | } |
| 737 | $fn = new FunctionType3( |
| 738 | domain: new PdfArray([new PdfNumber(0.0), new PdfNumber(1.0)]), |
| 739 | functions: new PdfArray($subFunctions), |
| 740 | bounds: new PdfArray($bounds), |
| 741 | encode: new PdfArray($encode), |
| 742 | ); |
| 743 | $fn->range = new PdfArray([ |
| 744 | new PdfNumber(0.0), new PdfNumber(1.0), |
| 745 | new PdfNumber(0.0), new PdfNumber(1.0), |
| 746 | new PdfNumber(0.0), new PdfNumber(1.0), |
| 747 | ]); |
| 748 | $this->writer->register($fn); |
| 749 | return $fn; |
| 750 | } |
| 751 | |
| 752 | /** |
| 753 | * @param array{float,float,float} $startRgb |
| 754 | * @param array{float,float,float} $endRgb |
| 755 | */ |
| 756 | private function buildRgbFunction(array $startRgb, array $endRgb): FunctionType2 |
| 757 | { |
| 758 | $fn = new FunctionType2( |
| 759 | domain: new PdfArray([new PdfNumber(0.0), new PdfNumber(1.0)]), |
| 760 | c0: new PdfArray([ |
| 761 | new PdfNumber($startRgb[0]), |
| 762 | new PdfNumber($startRgb[1]), |
| 763 | new PdfNumber($startRgb[2]), |
| 764 | ]), |
| 765 | c1: new PdfArray([ |
| 766 | new PdfNumber($endRgb[0]), |
| 767 | new PdfNumber($endRgb[1]), |
| 768 | new PdfNumber($endRgb[2]), |
| 769 | ]), |
| 770 | n: 1.0, |
| 771 | ); |
| 772 | $fn->range = new PdfArray([ |
| 773 | new PdfNumber(0.0), new PdfNumber(1.0), |
| 774 | new PdfNumber(0.0), new PdfNumber(1.0), |
| 775 | new PdfNumber(0.0), new PdfNumber(1.0), |
| 776 | ]); |
| 777 | $this->writer->register($fn); |
| 778 | return $fn; |
| 779 | } |
| 780 | |
| 781 | /** |
| 782 | * Register a linear DeviceGray shading whose gray value at each |
| 783 | * offset equals the *alpha* of the corresponding gradient stop |
| 784 | * (0 → black → fully transparent, 1 → white → fully opaque). Painted |
| 785 | * with the `sh` operator inside a transparency group, it becomes the |
| 786 | * `/G` of a Luminosity soft mask (ISO 32000-2 §11.6.5.2) that |
| 787 | * modulates a colour gradient's per-stop opacity — the CSS |
| 788 | * `linear-gradient(rgba(c,0), rgba(c,1))` case, which the colour |
| 789 | * shading alone cannot express (PDF shadings carry no alpha). |
| 790 | * |
| 791 | * @param list<array{offset: float, gray: float}> $stops |
| 792 | */ |
| 793 | public function addLinearAlphaShading( |
| 794 | Point $from, |
| 795 | Point $to, |
| 796 | array $stops, |
| 797 | bool $extend = true, |
| 798 | ): ShadingType2 { |
| 799 | $fn = $this->buildGrayStopFunction($stops); |
| 800 | $shading = new ShadingType2( |
| 801 | new PdfName('DeviceGray'), |
| 802 | new PdfArray([ |
| 803 | new PdfNumber($from->x), |
| 804 | new PdfNumber($from->y), |
| 805 | new PdfNumber($to->x), |
| 806 | new PdfNumber($to->y), |
| 807 | ]), |
| 808 | new PdfReference($fn->objectNumber), |
| 809 | ); |
| 810 | if ($extend) { |
| 811 | $shading->extend = self::extendBothEnds(); |
| 812 | } |
| 813 | $this->writer->register($shading); |
| 814 | return $shading; |
| 815 | } |
| 816 | |
| 817 | /** |
| 818 | * Radial counterpart to {@see addLinearAlphaShading()} — a |
| 819 | * DeviceGray Type-3 shading carrying the gradient's per-stop alpha |
| 820 | * as gray, for use as a Luminosity soft-mask `/G` form. |
| 821 | * |
| 822 | * @param list<array{offset: float, gray: float}> $stops |
| 823 | */ |
| 824 | public function addRadialAlphaShading( |
| 825 | Point $innerCenter, |
| 826 | float $innerRadius, |
| 827 | Point $outerCenter, |
| 828 | float $outerRadius, |
| 829 | array $stops, |
| 830 | bool $extend = true, |
| 831 | ): ShadingType3 { |
| 832 | $fn = $this->buildGrayStopFunction($stops); |
| 833 | $shading = new ShadingType3( |
| 834 | new PdfName('DeviceGray'), |
| 835 | new PdfArray([ |
| 836 | new PdfNumber($innerCenter->x), |
| 837 | new PdfNumber($innerCenter->y), |
| 838 | new PdfNumber($innerRadius), |
| 839 | new PdfNumber($outerCenter->x), |
| 840 | new PdfNumber($outerCenter->y), |
| 841 | new PdfNumber($outerRadius), |
| 842 | ]), |
| 843 | new PdfReference($fn->objectNumber), |
| 844 | ); |
| 845 | if ($extend) { |
| 846 | $shading->extend = self::extendBothEnds(); |
| 847 | } |
| 848 | $this->writer->register($shading); |
| 849 | return $shading; |
| 850 | } |
| 851 | |
| 852 | /** |
| 853 | * DeviceGray analogue of {@see buildRgbStopFunction()} — maps |
| 854 | * [0,1] → a single gray component through the stop list, for |
| 855 | * alpha soft-mask shadings. |
| 856 | * |
| 857 | * @param list<array{offset: float, gray: float}> $stops |
| 858 | */ |
| 859 | private function buildGrayStopFunction(array $stops): FunctionType2|FunctionType3 |
| 860 | { |
| 861 | if (count($stops) < 2) { |
| 862 | throw new \InvalidArgumentException('Alpha shading requires at least 2 stops.'); |
| 863 | } |
| 864 | if (count($stops) === 2) { |
| 865 | return $this->buildGrayFunction($stops[0]['gray'], $stops[1]['gray']); |
| 866 | } |
| 867 | $subFunctions = []; |
| 868 | $bounds = []; |
| 869 | $encode = []; |
| 870 | $count = count($stops); |
| 871 | for ($i = 0; $i < $count - 1; $i++) { |
| 872 | $segment = $this->buildGrayFunction($stops[$i]['gray'], $stops[$i + 1]['gray']); |
| 873 | $subFunctions[] = new PdfReference($segment->objectNumber); |
| 874 | if ($i > 0) { |
| 875 | $bounds[] = new PdfNumber($stops[$i]['offset']); |
| 876 | } |
| 877 | $encode[] = new PdfNumber(0.0); |
| 878 | $encode[] = new PdfNumber(1.0); |
| 879 | } |
| 880 | $fn = new FunctionType3( |
| 881 | domain: new PdfArray([new PdfNumber(0.0), new PdfNumber(1.0)]), |
| 882 | functions: new PdfArray($subFunctions), |
| 883 | bounds: new PdfArray($bounds), |
| 884 | encode: new PdfArray($encode), |
| 885 | ); |
| 886 | $fn->range = new PdfArray([new PdfNumber(0.0), new PdfNumber(1.0)]); |
| 887 | $this->writer->register($fn); |
| 888 | return $fn; |
| 889 | } |
| 890 | |
| 891 | private function buildGrayFunction(float $startGray, float $endGray): FunctionType2 |
| 892 | { |
| 893 | $fn = new FunctionType2( |
| 894 | domain: new PdfArray([new PdfNumber(0.0), new PdfNumber(1.0)]), |
| 895 | c0: new PdfArray([new PdfNumber($startGray)]), |
| 896 | c1: new PdfArray([new PdfNumber($endGray)]), |
| 897 | n: 1.0, |
| 898 | ); |
| 899 | $fn->range = new PdfArray([new PdfNumber(0.0), new PdfNumber(1.0)]); |
| 900 | $this->writer->register($fn); |
| 901 | return $fn; |
| 902 | } |
| 903 | |
| 904 | /** |
| 905 | * Build `/Extend [true true]` — used by the `addLinearGradient*` / |
| 906 | * `addRadialGradient*` registration helpers when the caller opts |
| 907 | * into endpoint-pad semantics on a Type 2 / Type 3 shading. |
| 908 | */ |
| 909 | private static function extendBothEnds(): PdfArray |
| 910 | { |
| 911 | return new PdfArray([true, true]); |
| 912 | } |
| 913 | |
| 914 | // ----------------------------------------------------------------------- |
| 915 | // Spot colors |
| 916 | // ----------------------------------------------------------------------- |
| 917 | |
| 918 | /** |
| 919 | * Register a spot color (a {@see Separation} color space). The |
| 920 | * `$cmykTint` parameter specifies the device-CMYK approximation |
| 921 | * used by viewers that don't have the spot ink — values are 0–1. |
| 922 | * |
| 923 | * Use the returned `Separation` with |
| 924 | * {@see Writer\Page::useSpotColor()} to attach it to a page's |
| 925 | * resources and obtain the resource name for content-stream ops: |
| 926 | * |
| 927 | * $sep = $doc->registerSpotColor('Pantone 185 C', [0, 0.85, 0.6, 0]); |
| 928 | * $name = $page->useSpotColor($sep); |
| 929 | * $page->contentStream() |
| 930 | * ->setFillColorSpace($name) |
| 931 | * ->setFillColor(1.0) // full tint |
| 932 | * ->rectangle(72, 600, 200, 80) |
| 933 | * ->fill(); |
| 934 | * |
| 935 | * @param array{float,float,float,float} $cmykTint |
| 936 | */ |
| 937 | public function registerSpotColor(string $name, array $cmykTint): SpotColor |
| 938 | { |
| 939 | $tintFn = new FunctionType2( |
| 940 | domain: new PdfArray([new PdfNumber(0.0), new PdfNumber(1.0)]), |
| 941 | c0: new PdfArray([ |
| 942 | new PdfNumber(0.0), |
| 943 | new PdfNumber(0.0), |
| 944 | new PdfNumber(0.0), |
| 945 | new PdfNumber(0.0), |
| 946 | ]), |
| 947 | c1: new PdfArray([ |
| 948 | new PdfNumber($cmykTint[0]), |
| 949 | new PdfNumber($cmykTint[1]), |
| 950 | new PdfNumber($cmykTint[2]), |
| 951 | new PdfNumber($cmykTint[3]), |
| 952 | ]), |
| 953 | n: 1.0, |
| 954 | ); |
| 955 | $tintFn->range = new PdfArray([ |
| 956 | new PdfNumber(0.0), |
| 957 | new PdfNumber(1.0), |
| 958 | new PdfNumber(0.0), |
| 959 | new PdfNumber(1.0), |
| 960 | new PdfNumber(0.0), |
| 961 | new PdfNumber(1.0), |
| 962 | new PdfNumber(0.0), |
| 963 | new PdfNumber(1.0), |
| 964 | ]); |
| 965 | $this->writer->register($tintFn); |
| 966 | |
| 967 | $separation = new Separation( |
| 968 | new PdfName($name), |
| 969 | new PdfName('DeviceCMYK'), |
| 970 | new PdfReference($tintFn->objectNumber), |
| 971 | ); |
| 972 | // `Separation` is a value type (implements Serializable) — it's |
| 973 | // inlined into the page's /Resources /ColorSpace entry rather |
| 974 | // than registered as an indirect object. |
| 975 | return new SpotColor($name, $separation); |
| 976 | } |
| 977 | |
| 978 | // ----------------------------------------------------------------------- |
| 979 | // Barcodes |
| 980 | // ----------------------------------------------------------------------- |
| 981 | |
| 982 | /** |
| 983 | * Build a reusable {@see FormXObject} containing a barcode |
| 984 | * rendering. The resulting template can be placed on multiple |
| 985 | * pages via `Writer\Page::drawTemplate()`. |
| 986 | * |
| 987 | * Only `Symbology::Code128` is implemented in v1; other cases |
| 988 | * throw at render time. |
| 989 | */ |
| 990 | public function createBarcode( |
| 991 | Symbology $symbology, |
| 992 | string $data, |
| 993 | ?BarcodeOptions $options = null, |
| 994 | ): FormXObject { |
| 995 | $options ??= new BarcodeOptions(); |
| 996 | $bitmap = BarcodeRenderer::render($symbology, $data, $options); |
| 997 | |
| 998 | return $this->createTemplate( |
| 999 | new Rectangle(0.0, 0.0, $bitmap->totalWidth(), $bitmap->totalHeight()), |
| 1000 | function (ContentStream $cs) use ($bitmap): void { |
| 1001 | BarcodeRendering::renderInto($cs, $bitmap); |
| 1002 | }, |
| 1003 | ); |
| 1004 | } |
| 1005 | |
| 1006 | |
| 1007 | /** |
| 1008 | * Build a reusable Form XObject — a self-contained content stream |
| 1009 | * that can be placed on multiple pages without re-emitting the |
| 1010 | * underlying operators. |
| 1011 | * |
| 1012 | * The closure receives a fresh {@see ContentStream} sized to |
| 1013 | * `$bbox` (origin at `bbox->x, bbox->y`). Any drawing operators |
| 1014 | * the closure adds are captured into the FormXObject's stream; |
| 1015 | * resources (fonts, images) used inside the template must be |
| 1016 | * registered on the FormXObject's own resource dict — for v1, the |
| 1017 | * caller passes pre-registered Font handles into the closure if |
| 1018 | * needed and accepts that the template inherits resources from |
| 1019 | * the placing page. |
| 1020 | * |
| 1021 | * @param \Closure(ContentStream): void $draw |
| 1022 | */ |
| 1023 | public function createTemplate(Rectangle $bbox, \Closure $draw): FormXObject |
| 1024 | { |
| 1025 | [$llx, $lly, $urx, $ury] = $bbox->toArray(); |
| 1026 | $bboxArr = new PdfArray([ |
| 1027 | new PdfNumber($llx), |
| 1028 | new PdfNumber($lly), |
| 1029 | new PdfNumber($urx), |
| 1030 | new PdfNumber($ury), |
| 1031 | ]); |
| 1032 | |
| 1033 | $cs = new ContentStream(); |
| 1034 | $draw($cs); |
| 1035 | |
| 1036 | $template = new FormXObject($bboxArr, implode("\n", $cs->getOperators())); |
| 1037 | // Empty Resources so the placing page contributes shared |
| 1038 | // fonts / images via its own resource dict. |
| 1039 | $template->resources = new Resources(); |
| 1040 | $this->writer->register($template); |
| 1041 | return $template; |
| 1042 | } |
| 1043 | |
| 1044 | /** |
| 1045 | * Create a registered transparency-group Form XObject — a |
| 1046 | * {@see createTemplate()} whose content is drawn inside an isolated |
| 1047 | * `/Group << /S /Transparency /CS /DeviceRGB /I true >>` so it can |
| 1048 | * serve as the `/G` of an ExtGState soft mask (ISO 32000-2 §11.6.5). |
| 1049 | * The group carries its OWN {@see Resources} so a caller can register |
| 1050 | * shading patterns / images used only by the mask content on it. |
| 1051 | * |
| 1052 | * @param \Closure(ContentStream, Resources): void $draw receives the |
| 1053 | * group's content stream and its resource dict. |
| 1054 | */ |
| 1055 | public function createTransparencyGroup(Rectangle $bbox, \Closure $draw): FormXObject |
| 1056 | { |
| 1057 | [$llx, $lly, $urx, $ury] = $bbox->toArray(); |
| 1058 | $bboxArr = new PdfArray([ |
| 1059 | new PdfNumber($llx), |
| 1060 | new PdfNumber($lly), |
| 1061 | new PdfNumber($urx), |
| 1062 | new PdfNumber($ury), |
| 1063 | ]); |
| 1064 | |
| 1065 | $resources = new Resources(); |
| 1066 | $cs = new ContentStream(); |
| 1067 | $draw($cs, $resources); |
| 1068 | |
| 1069 | $group = new FormXObject($bboxArr, implode("\n", $cs->getOperators())); |
| 1070 | $group->resources = $resources; |
| 1071 | $groupAttrs = new \Phpdftk\Pdf\Core\Document\GroupAttributes('Transparency'); |
| 1072 | $groupAttrs->cs = new \Phpdftk\Pdf\Core\PdfName('DeviceRGB'); |
| 1073 | $groupAttrs->i = new \Phpdftk\Pdf\Core\PdfBoolean(true); |
| 1074 | $group->group = $groupAttrs; |
| 1075 | $this->writer->register($group); |
| 1076 | return $group; |
| 1077 | } |
| 1078 | |
| 1079 | // ----------------------------------------------------------------------- |
| 1080 | // Actions |
| 1081 | // ----------------------------------------------------------------------- |
| 1082 | |
| 1083 | /** |
| 1084 | * Set the document's open action — executed by the viewer when |
| 1085 | * the document is loaded. Typically used to jump to a specific |
| 1086 | * page or run JavaScript on open. The action is registered as an |
| 1087 | * indirect object; pass an instance from {@see Action}'s static |
| 1088 | * factories. |
| 1089 | */ |
| 1090 | public function setOpenAction(\Phpdftk\Pdf\Core\Action\Action $action): self |
| 1091 | { |
| 1092 | $this->writer->register($action); |
| 1093 | $this->writer->getCatalog()->openAction = new PdfReference($action->objectNumber); |
| 1094 | return $this; |
| 1095 | } |
| 1096 | |
| 1097 | // ----------------------------------------------------------------------- |
| 1098 | // Optional content (layers) |
| 1099 | // ----------------------------------------------------------------------- |
| 1100 | |
| 1101 | /** |
| 1102 | * Register a new optional-content group (layer). The returned |
| 1103 | * `OCG` is referenced from the catalog's `/OCProperties` /OCGs |
| 1104 | * array; pass it to {@see Writer\Page::inLayer()} to tag drawing |
| 1105 | * operations as belonging to this layer. |
| 1106 | * |
| 1107 | * `$visible` controls the default state: visible layers go into |
| 1108 | * the default config's `/ON` list, hidden ones into `/OFF`. |
| 1109 | */ |
| 1110 | public function addLayer(string $name, bool $visible = true): OCG |
| 1111 | { |
| 1112 | $ocg = new OCG($name); |
| 1113 | $this->writer->register($ocg); |
| 1114 | $ref = new PdfReference($ocg->objectNumber); |
| 1115 | |
| 1116 | $props = $this->ensureOCPropertiesDict(); |
| 1117 | $props->ocgs = new PdfArray([...$props->ocgs->items, $ref]); |
| 1118 | |
| 1119 | $key = $visible ? 'ON' : 'OFF'; |
| 1120 | $list = $props->d->get($key); |
| 1121 | $items = $list instanceof PdfArray ? $list->items : []; |
| 1122 | $items[] = $ref; |
| 1123 | $props->d->set($key, new PdfArray($items)); |
| 1124 | |
| 1125 | return $ocg; |
| 1126 | } |
| 1127 | |
| 1128 | private function ensureOCPropertiesDict(): OCPropertiesDict |
| 1129 | { |
| 1130 | if ($this->ocPropertiesDict !== null) { |
| 1131 | return $this->ocPropertiesDict; |
| 1132 | } |
| 1133 | $defaultConfig = new PdfDictionary([ |
| 1134 | 'Name' => new PdfString('Default'), |
| 1135 | 'BaseState' => new PdfName('ON'), |
| 1136 | 'ON' => new PdfArray([]), |
| 1137 | 'OFF' => new PdfArray([]), |
| 1138 | ]); |
| 1139 | $props = new OCPropertiesDict(new PdfArray([]), $defaultConfig); |
| 1140 | $this->writer->register($props); |
| 1141 | $this->writer->getCatalog()->ocProperties = new PdfReference($props->objectNumber); |
| 1142 | $this->ocPropertiesDict = $props; |
| 1143 | return $props; |
| 1144 | } |
| 1145 | |
| 1146 | // ----------------------------------------------------------------------- |
| 1147 | // File attachments |
| 1148 | // ----------------------------------------------------------------------- |
| 1149 | |
| 1150 | /** |
| 1151 | * Attach a file from disk. The file's bytes are read via |
| 1152 | * {@see LocalFilesystem::readFile()} and embedded as an |
| 1153 | * `EmbeddedFile`, wrapped in a `FileSpec`, and appended to the |
| 1154 | * catalog's `/AF` (Associated Files) array. |
| 1155 | * |
| 1156 | * `$relationship` populates `/AFRelationship` — the PDF 2.0 hint |
| 1157 | * to viewers about the file's role. ZUGFeRD invoices use |
| 1158 | * `Alternative` for the embedded XML; common values are `Source`, |
| 1159 | * `Data`, `Alternative`, `Supplement`, `EncryptedPayload`, and |
| 1160 | * `FormData`. |
| 1161 | */ |
| 1162 | public function attachFile( |
| 1163 | string $path, |
| 1164 | ?string $description = null, |
| 1165 | ?string $mimeType = null, |
| 1166 | ?string $relationship = null, |
| 1167 | ): FileSpec { |
| 1168 | $bytes = LocalFilesystem::readFile($path); |
| 1169 | $name = basename($path); |
| 1170 | return $this->attachBytes($name, $bytes, $description, $mimeType, $relationship); |
| 1171 | } |
| 1172 | |
| 1173 | /** |
| 1174 | * Attach a file from in-memory bytes — useful when the source |
| 1175 | * isn't on disk (generated XML for ZUGFeRD, downloaded content, |
| 1176 | * etc.). |
| 1177 | */ |
| 1178 | public function attachFileBytes( |
| 1179 | string $name, |
| 1180 | string $bytes, |
| 1181 | ?string $description = null, |
| 1182 | ?string $mimeType = null, |
| 1183 | ?string $relationship = null, |
| 1184 | ): FileSpec { |
| 1185 | return $this->attachBytes($name, $bytes, $description, $mimeType, $relationship); |
| 1186 | } |
| 1187 | |
| 1188 | private function attachBytes( |
| 1189 | string $name, |
| 1190 | string $bytes, |
| 1191 | ?string $description, |
| 1192 | ?string $mimeType, |
| 1193 | ?string $relationship, |
| 1194 | ): FileSpec { |
| 1195 | $embedded = new EmbeddedFile($bytes, $mimeType); |
| 1196 | $this->writer->register($embedded); |
| 1197 | |
| 1198 | $fileSpec = new FileSpec($name); |
| 1199 | $fileSpec->attachEmbeddedFile(new PdfReference($embedded->objectNumber)); |
| 1200 | if ($description !== null) { |
| 1201 | $fileSpec->desc = new PdfString($description); |
| 1202 | } |
| 1203 | if ($relationship !== null) { |
| 1204 | $fileSpec->afRelationship = new PdfName($relationship); |
| 1205 | } |
| 1206 | $this->writer->register($fileSpec); |
| 1207 | |
| 1208 | $catalog = $this->writer->getCatalog(); |
| 1209 | $existing = $catalog->af !== null ? $catalog->af->items : []; |
| 1210 | $existing[] = new PdfReference($fileSpec->objectNumber); |
| 1211 | $catalog->af = new PdfArray($existing); |
| 1212 | |
| 1213 | return $fileSpec; |
| 1214 | } |
| 1215 | |
| 1216 | // ----------------------------------------------------------------------- |
| 1217 | // Viewer preferences |
| 1218 | // ----------------------------------------------------------------------- |
| 1219 | |
| 1220 | /** |
| 1221 | * Set the document's viewer preferences. Accepts either a |
| 1222 | * pre-constructed {@see ViewerPreferences} object or a closure |
| 1223 | * that receives a fresh instance and mutates it. |
| 1224 | * |
| 1225 | * Closure form: |
| 1226 | * $doc->setViewerPreferences(function (ViewerPreferences $vp): void { |
| 1227 | * $vp->displayDocTitle = true; |
| 1228 | * $vp->fitWindow = true; |
| 1229 | * }); |
| 1230 | */ |
| 1231 | public function setViewerPreferences(ViewerPreferences|\Closure $prefs): self |
| 1232 | { |
| 1233 | if ($prefs instanceof \Closure) { |
| 1234 | $vp = new ViewerPreferences(); |
| 1235 | $prefs($vp); |
| 1236 | } else { |
| 1237 | $vp = $prefs; |
| 1238 | } |
| 1239 | $this->writer->register($vp); |
| 1240 | $this->writer->getCatalog()->viewerPreferences = new PdfReference($vp->objectNumber); |
| 1241 | return $this; |
| 1242 | } |
| 1243 | |
| 1244 | // ----------------------------------------------------------------------- |
| 1245 | // Annotations |
| 1246 | // ----------------------------------------------------------------------- |
| 1247 | |
| 1248 | /** |
| 1249 | * Add a link annotation to a page. |
| 1250 | * |
| 1251 | * `$target` accepts: |
| 1252 | * - **string** — treated as a URI; an inline /A action dict is built. |
| 1253 | * - **Destination** — an explicit destination (use the named |
| 1254 | * constructors `Destination::fit($pageRef)`, |
| 1255 | * `Destination::xyz(...)`, etc.). |
| 1256 | * - **PdfReference** — points to a named destination that has been |
| 1257 | * registered via {@see setNamedDestinations()}. |
| 1258 | */ |
| 1259 | public function addLink( |
| 1260 | Page|CorePage $page, |
| 1261 | Rectangle $rect, |
| 1262 | string|Destination|PdfReference $target, |
| 1263 | ?BorderStyle $border = null, |
| 1264 | ): LinkAnnotation { |
| 1265 | $corePage = $page instanceof Page ? $page->corePage() : $page; |
| 1266 | |
| 1267 | [$llx, $lly, $urx, $ury] = $rect->toArray(); |
| 1268 | $rectArray = new PdfArray([ |
| 1269 | new PdfNumber($llx), |
| 1270 | new PdfNumber($lly), |
| 1271 | new PdfNumber($urx), |
| 1272 | new PdfNumber($ury), |
| 1273 | ]); |
| 1274 | |
| 1275 | $annotation = new LinkAnnotation($rectArray); |
| 1276 | |
| 1277 | if (is_string($target)) { |
| 1278 | $actionDict = new PdfDictionary(); |
| 1279 | $actionDict->set('Type', new PdfName('Action')); |
| 1280 | $actionDict->set('S', new PdfName('URI')); |
| 1281 | $actionDict->set('URI', new PdfString($target)); |
| 1282 | $annotation->a = $actionDict; |
| 1283 | } else { |
| 1284 | $annotation->dest = $target; |
| 1285 | } |
| 1286 | |
| 1287 | if ($border !== null) { |
| 1288 | $annotation->bs = $border; |
| 1289 | } |
| 1290 | |
| 1291 | $this->writer->register($annotation); |
| 1292 | $corePage->annots[] = new PdfReference($annotation->objectNumber); |
| 1293 | |
| 1294 | return $annotation; |
| 1295 | } |
| 1296 | |
| 1297 | /** |
| 1298 | * Add a sticky-note ("text") annotation — a small icon that opens |
| 1299 | * a popup with `$content` text when clicked. `$point` is the |
| 1300 | * lower-left corner; the rect defaults to a 16×16 box around it. |
| 1301 | */ |
| 1302 | public function addStickyNote( |
| 1303 | Page|CorePage $page, |
| 1304 | float $x, |
| 1305 | float $y, |
| 1306 | string $content, |
| 1307 | ?string $iconName = null, |
| 1308 | ): TextAnnotation { |
| 1309 | $rect = new Rectangle($x, $y, 16.0, 16.0); |
| 1310 | $annotation = new TextAnnotation($this->rectToPdfArray($rect)); |
| 1311 | $annotation->contents = new PdfString($content); |
| 1312 | if ($iconName !== null) { |
| 1313 | $annotation->name = new PdfName($iconName); |
| 1314 | } |
| 1315 | return $this->attachAnnotation($page, $annotation); |
| 1316 | } |
| 1317 | |
| 1318 | /** |
| 1319 | * Add a free-text annotation — text drawn directly on the page |
| 1320 | * (rather than in a popup like a sticky note). `$defaultAppearance` |
| 1321 | * is the PDF "default appearance" string controlling font + colour |
| 1322 | * (e.g. `/Helv 10 Tf 0 0 0 rg`). |
| 1323 | */ |
| 1324 | public function addFreeText( |
| 1325 | Page|CorePage $page, |
| 1326 | Rectangle $rect, |
| 1327 | string $content, |
| 1328 | string $defaultAppearance = '/Helv 10 Tf 0 0 0 rg', |
| 1329 | ): FreeTextAnnotation { |
| 1330 | $annotation = new FreeTextAnnotation( |
| 1331 | $this->rectToPdfArray($rect), |
| 1332 | new PdfString($defaultAppearance), |
| 1333 | ); |
| 1334 | $annotation->contents = new PdfString($content); |
| 1335 | return $this->attachAnnotation($page, $annotation); |
| 1336 | } |
| 1337 | |
| 1338 | /** |
| 1339 | * Add a text-highlight annotation. `$quads` is a list of |
| 1340 | * `Rectangle`s — one per highlighted span (typically each text |
| 1341 | * line). The annotation's bounding rect is the union of all quads. |
| 1342 | * |
| 1343 | * @param list<Rectangle> $quads |
| 1344 | */ |
| 1345 | public function addHighlight(Page|CorePage $page, array $quads): HighlightAnnotation |
| 1346 | { |
| 1347 | [$rectArr, $quadArr] = $this->quadsToArrays($quads); |
| 1348 | $annotation = new HighlightAnnotation($rectArr, $quadArr); |
| 1349 | return $this->attachAnnotation($page, $annotation); |
| 1350 | } |
| 1351 | |
| 1352 | /** |
| 1353 | * Add an underline annotation — visually similar to highlight but |
| 1354 | * draws a line under each text span. `$quads` is one rect per span. |
| 1355 | * |
| 1356 | * @param list<Rectangle> $quads |
| 1357 | */ |
| 1358 | public function addUnderlineAnnotation(Page|CorePage $page, array $quads): UnderlineAnnotation |
| 1359 | { |
| 1360 | [$rectArr, $quadArr] = $this->quadsToArrays($quads); |
| 1361 | $annotation = new UnderlineAnnotation($rectArr); |
| 1362 | $annotation->quadPoints = $quadArr; |
| 1363 | return $this->attachAnnotation($page, $annotation); |
| 1364 | } |
| 1365 | |
| 1366 | /** |
| 1367 | * Add a squiggly-underline annotation — wavy line below each text span. |
| 1368 | * |
| 1369 | * @param list<Rectangle> $quads |
| 1370 | */ |
| 1371 | public function addSquiggly(Page|CorePage $page, array $quads): SquigglyAnnotation |
| 1372 | { |
| 1373 | [$rectArr, $quadArr] = $this->quadsToArrays($quads); |
| 1374 | $annotation = new SquigglyAnnotation($rectArr); |
| 1375 | $annotation->quadPoints = $quadArr; |
| 1376 | return $this->attachAnnotation($page, $annotation); |
| 1377 | } |
| 1378 | |
| 1379 | /** |
| 1380 | * Add a strikeout annotation — line through each text span. |
| 1381 | * |
| 1382 | * @param list<Rectangle> $quads |
| 1383 | */ |
| 1384 | public function addStrikeout(Page|CorePage $page, array $quads): StrikeOutAnnotation |
| 1385 | { |
| 1386 | [$rectArr, $quadArr] = $this->quadsToArrays($quads); |
| 1387 | $annotation = new StrikeOutAnnotation($rectArr); |
| 1388 | $annotation->quadPoints = $quadArr; |
| 1389 | return $this->attachAnnotation($page, $annotation); |
| 1390 | } |
| 1391 | |
| 1392 | /** |
| 1393 | * Add a caret annotation — small upward-pointing wedge typically |
| 1394 | * used to mark an insertion point. |
| 1395 | */ |
| 1396 | public function addCaret(Page|CorePage $page, Rectangle $rect): CaretAnnotation |
| 1397 | { |
| 1398 | $annotation = new CaretAnnotation($this->rectToPdfArray($rect)); |
| 1399 | return $this->attachAnnotation($page, $annotation); |
| 1400 | } |
| 1401 | |
| 1402 | /** |
| 1403 | * Add a free-form ink annotation. `$paths` is a list of strokes, |
| 1404 | * each stroke a flat list of `[x0, y0, x1, y1, ...]` points. |
| 1405 | * |
| 1406 | * @param list<list<float>> $paths |
| 1407 | */ |
| 1408 | public function addInk(Page|CorePage $page, array $paths): InkAnnotation |
| 1409 | { |
| 1410 | $minX = PHP_FLOAT_MAX; |
| 1411 | $minY = PHP_FLOAT_MAX; |
| 1412 | $maxX = -PHP_FLOAT_MAX; |
| 1413 | $maxY = -PHP_FLOAT_MAX; |
| 1414 | $inkPaths = []; |
| 1415 | foreach ($paths as $path) { |
| 1416 | $pdfPath = []; |
| 1417 | $count = count($path); |
| 1418 | for ($i = 0; $i + 1 < $count; $i += 2) { |
| 1419 | $x = (float) $path[$i]; |
| 1420 | $y = (float) $path[$i + 1]; |
| 1421 | $minX = min($minX, $x); |
| 1422 | $minY = min($minY, $y); |
| 1423 | $maxX = max($maxX, $x); |
| 1424 | $maxY = max($maxY, $y); |
| 1425 | $pdfPath[] = new PdfNumber($x); |
| 1426 | $pdfPath[] = new PdfNumber($y); |
| 1427 | } |
| 1428 | $inkPaths[] = new PdfArray($pdfPath); |
| 1429 | } |
| 1430 | if ($minX === PHP_FLOAT_MAX) { |
| 1431 | $minX = $minY = $maxX = $maxY = 0.0; |
| 1432 | } |
| 1433 | $rectArr = new PdfArray([ |
| 1434 | new PdfNumber($minX), |
| 1435 | new PdfNumber($minY), |
| 1436 | new PdfNumber($maxX), |
| 1437 | new PdfNumber($maxY), |
| 1438 | ]); |
| 1439 | $annotation = new InkAnnotation($rectArr, new PdfArray($inkPaths)); |
| 1440 | return $this->attachAnnotation($page, $annotation); |
| 1441 | } |
| 1442 | |
| 1443 | /** |
| 1444 | * Add a line annotation between two points. |
| 1445 | */ |
| 1446 | public function addLineAnnotation( |
| 1447 | Page|CorePage $page, |
| 1448 | float $x1, |
| 1449 | float $y1, |
| 1450 | float $x2, |
| 1451 | float $y2, |
| 1452 | ): LineAnnotation { |
| 1453 | $rectArr = new PdfArray([ |
| 1454 | new PdfNumber(min($x1, $x2)), |
| 1455 | new PdfNumber(min($y1, $y2)), |
| 1456 | new PdfNumber(max($x1, $x2)), |
| 1457 | new PdfNumber(max($y1, $y2)), |
| 1458 | ]); |
| 1459 | $annotation = new LineAnnotation($rectArr); |
| 1460 | $annotation->l = new PdfArray([ |
| 1461 | new PdfNumber($x1), |
| 1462 | new PdfNumber($y1), |
| 1463 | new PdfNumber($x2), |
| 1464 | new PdfNumber($y2), |
| 1465 | ]); |
| 1466 | return $this->attachAnnotation($page, $annotation); |
| 1467 | } |
| 1468 | |
| 1469 | /** |
| 1470 | * Add a polygon annotation. `$points` is a list of `[x, y]` pairs; |
| 1471 | * the polygon is implicitly closed back to the first vertex. |
| 1472 | * |
| 1473 | * @param list<array{float,float}> $points |
| 1474 | */ |
| 1475 | public function addPolygon(Page|CorePage $page, array $points): PolygonAnnotation |
| 1476 | { |
| 1477 | [$rectArr, $vertices] = $this->pointsToRectAndArray($points); |
| 1478 | $annotation = new PolygonAnnotation($rectArr); |
| 1479 | $annotation->vertices = $vertices; |
| 1480 | return $this->attachAnnotation($page, $annotation); |
| 1481 | } |
| 1482 | |
| 1483 | /** |
| 1484 | * Add a polyline annotation — like a polygon but open (last point |
| 1485 | * does not connect back to the first). |
| 1486 | * |
| 1487 | * @param list<array{float,float}> $points |
| 1488 | */ |
| 1489 | public function addPolyline(Page|CorePage $page, array $points): PolyLineAnnotation |
| 1490 | { |
| 1491 | [$rectArr, $vertices] = $this->pointsToRectAndArray($points); |
| 1492 | $annotation = new PolyLineAnnotation($rectArr); |
| 1493 | $annotation->vertices = $vertices; |
| 1494 | return $this->attachAnnotation($page, $annotation); |
| 1495 | } |
| 1496 | |
| 1497 | /** |
| 1498 | * Add a rectangular shape annotation — visible as a stroked |
| 1499 | * rectangle on the page. |
| 1500 | */ |
| 1501 | public function addSquare(Page|CorePage $page, Rectangle $rect): SquareAnnotation |
| 1502 | { |
| 1503 | $annotation = new SquareAnnotation($this->rectToPdfArray($rect)); |
| 1504 | return $this->attachAnnotation($page, $annotation); |
| 1505 | } |
| 1506 | |
| 1507 | /** |
| 1508 | * Add a circular / elliptical shape annotation — visible as a |
| 1509 | * stroked ellipse inscribed in the rectangle. |
| 1510 | */ |
| 1511 | public function addCircleAnnotation(Page|CorePage $page, Rectangle $rect): CircleAnnotation |
| 1512 | { |
| 1513 | $annotation = new CircleAnnotation($this->rectToPdfArray($rect)); |
| 1514 | return $this->attachAnnotation($page, $annotation); |
| 1515 | } |
| 1516 | |
| 1517 | /** |
| 1518 | * Add a rubber-stamp annotation. `$stampName` is the standard |
| 1519 | * stamp identifier (`Approved`, `Confidential`, `Draft`, etc.). |
| 1520 | */ |
| 1521 | public function addStamp( |
| 1522 | Page|CorePage $page, |
| 1523 | Rectangle $rect, |
| 1524 | string $stampName = 'Draft', |
| 1525 | ): StampAnnotation { |
| 1526 | $annotation = new StampAnnotation($this->rectToPdfArray($rect)); |
| 1527 | $annotation->name = new PdfName($stampName); |
| 1528 | return $this->attachAnnotation($page, $annotation); |
| 1529 | } |
| 1530 | |
| 1531 | /** |
| 1532 | * Add a watermark annotation — fixed page-level overlay that |
| 1533 | * doesn't print by default (PDF 1.7). |
| 1534 | */ |
| 1535 | public function addWatermarkAnnotation(Page|CorePage $page, Rectangle $rect): WatermarkAnnotation |
| 1536 | { |
| 1537 | $annotation = new WatermarkAnnotation($this->rectToPdfArray($rect)); |
| 1538 | return $this->attachAnnotation($page, $annotation); |
| 1539 | } |
| 1540 | |
| 1541 | /** |
| 1542 | * Add a sound annotation. Caller supplies a pre-constructed |
| 1543 | * {@see \Phpdftk\Pdf\Core\Multimedia\Sound} stream (with sample |
| 1544 | * rate + bytes). Deprecated in PDF 2.0 — prefer Rich Media for |
| 1545 | * new documents. |
| 1546 | */ |
| 1547 | public function addSoundAnnotation( |
| 1548 | Page|CorePage $page, |
| 1549 | Rectangle $rect, |
| 1550 | \Phpdftk\Pdf\Core\Multimedia\Sound $sound, |
| 1551 | ): SoundAnnotation { |
| 1552 | $this->writer->register($sound); |
| 1553 | $annotation = new SoundAnnotation($this->rectToPdfArray($rect)); |
| 1554 | $annotation->sound = new PdfReference($sound->objectNumber); |
| 1555 | return $this->attachAnnotation($page, $annotation); |
| 1556 | } |
| 1557 | |
| 1558 | /** |
| 1559 | * Add a movie annotation. Deprecated in PDF 2.0 in favour of |
| 1560 | * Rich Media / Screen annotations; provided for legacy workflows. |
| 1561 | */ |
| 1562 | public function addMovieAnnotation( |
| 1563 | Page|CorePage $page, |
| 1564 | Rectangle $rect, |
| 1565 | \Phpdftk\Pdf\Core\Multimedia\Movie $movie, |
| 1566 | ): MovieAnnotation { |
| 1567 | $this->writer->register($movie); |
| 1568 | $annotation = new MovieAnnotation($this->rectToPdfArray($rect)); |
| 1569 | $annotation->movie = new PdfReference($movie->objectNumber); |
| 1570 | return $this->attachAnnotation($page, $annotation); |
| 1571 | } |
| 1572 | |
| 1573 | /** |
| 1574 | * Add a 3D annotation. Caller supplies a pre-constructed |
| 1575 | * {@see \Phpdftk\Pdf\Core\ThreeD\ThreeDStream} containing the U3D |
| 1576 | * or PRC payload. |
| 1577 | */ |
| 1578 | public function add3DAnnotation( |
| 1579 | Page|CorePage $page, |
| 1580 | Rectangle $rect, |
| 1581 | \Phpdftk\Pdf\Core\ThreeD\ThreeDStream $stream, |
| 1582 | ): ThreeDAnnotation { |
| 1583 | $this->writer->register($stream); |
| 1584 | $annotation = new ThreeDAnnotation($this->rectToPdfArray($rect)); |
| 1585 | $annotation->dd = new PdfReference($stream->objectNumber); |
| 1586 | return $this->attachAnnotation($page, $annotation); |
| 1587 | } |
| 1588 | |
| 1589 | /** |
| 1590 | * @template T of CoreAnnotation |
| 1591 | * @param T $annotation |
| 1592 | * @return T |
| 1593 | */ |
| 1594 | private function attachAnnotation(Page|CorePage $page, CoreAnnotation $annotation): CoreAnnotation |
| 1595 | { |
| 1596 | $corePage = $page instanceof Page ? $page->corePage() : $page; |
| 1597 | $this->writer->register($annotation); |
| 1598 | $corePage->annots[] = new PdfReference($annotation->objectNumber); |
| 1599 | return $annotation; |
| 1600 | } |
| 1601 | |
| 1602 | private function rectToPdfArray(Rectangle $rect): PdfArray |
| 1603 | { |
| 1604 | [$llx, $lly, $urx, $ury] = $rect->toArray(); |
| 1605 | return new PdfArray([ |
| 1606 | new PdfNumber($llx), |
| 1607 | new PdfNumber($lly), |
| 1608 | new PdfNumber($urx), |
| 1609 | new PdfNumber($ury), |
| 1610 | ]); |
| 1611 | } |
| 1612 | |
| 1613 | /** |
| 1614 | * Convert a list of Rectangles representing text-markup spans |
| 1615 | * into the bounding rect + quad-points array required by |
| 1616 | * highlight / underline / squiggly / strikeout annotations. |
| 1617 | * |
| 1618 | * @param list<Rectangle> $quads |
| 1619 | * @return array{0: PdfArray, 1: PdfArray} |
| 1620 | */ |
| 1621 | private function quadsToArrays(array $quads): array |
| 1622 | { |
| 1623 | if ($quads === []) { |
| 1624 | throw new \InvalidArgumentException('At least one quad rectangle is required.'); |
| 1625 | } |
| 1626 | $minX = PHP_FLOAT_MAX; |
| 1627 | $minY = PHP_FLOAT_MAX; |
| 1628 | $maxX = -PHP_FLOAT_MAX; |
| 1629 | $maxY = -PHP_FLOAT_MAX; |
| 1630 | $quadPoints = []; |
| 1631 | foreach ($quads as $q) { |
| 1632 | [$llx, $lly, $urx, $ury] = $q->toArray(); |
| 1633 | $minX = min($minX, $llx); |
| 1634 | $minY = min($minY, $lly); |
| 1635 | $maxX = max($maxX, $urx); |
| 1636 | $maxY = max($maxY, $ury); |
| 1637 | // PDF QuadPoints order: ULx ULy URx URy LLx LLy LRx LRy. |
| 1638 | array_push( |
| 1639 | $quadPoints, |
| 1640 | new PdfNumber($llx), |
| 1641 | new PdfNumber($ury), |
| 1642 | new PdfNumber($urx), |
| 1643 | new PdfNumber($ury), |
| 1644 | new PdfNumber($llx), |
| 1645 | new PdfNumber($lly), |
| 1646 | new PdfNumber($urx), |
| 1647 | new PdfNumber($lly), |
| 1648 | ); |
| 1649 | } |
| 1650 | $rectArr = new PdfArray([ |
| 1651 | new PdfNumber($minX), |
| 1652 | new PdfNumber($minY), |
| 1653 | new PdfNumber($maxX), |
| 1654 | new PdfNumber($maxY), |
| 1655 | ]); |
| 1656 | return [$rectArr, new PdfArray($quadPoints)]; |
| 1657 | } |
| 1658 | |
| 1659 | /** |
| 1660 | * @param list<array{float,float}> $points |
| 1661 | * @return array{0: PdfArray, 1: PdfArray} |
| 1662 | */ |
| 1663 | private function pointsToRectAndArray(array $points): array |
| 1664 | { |
| 1665 | if ($points === []) { |
| 1666 | throw new \InvalidArgumentException('At least one point is required.'); |
| 1667 | } |
| 1668 | $minX = PHP_FLOAT_MAX; |
| 1669 | $minY = PHP_FLOAT_MAX; |
| 1670 | $maxX = -PHP_FLOAT_MAX; |
| 1671 | $maxY = -PHP_FLOAT_MAX; |
| 1672 | $flat = []; |
| 1673 | foreach ($points as [$x, $y]) { |
| 1674 | $minX = min($minX, $x); |
| 1675 | $minY = min($minY, $y); |
| 1676 | $maxX = max($maxX, $x); |
| 1677 | $maxY = max($maxY, $y); |
| 1678 | $flat[] = new PdfNumber($x); |
| 1679 | $flat[] = new PdfNumber($y); |
| 1680 | } |
| 1681 | $rectArr = new PdfArray([ |
| 1682 | new PdfNumber($minX), |
| 1683 | new PdfNumber($minY), |
| 1684 | new PdfNumber($maxX), |
| 1685 | new PdfNumber($maxY), |
| 1686 | ]); |
| 1687 | return [$rectArr, new PdfArray($flat)]; |
| 1688 | } |
| 1689 | |
| 1690 | // ----------------------------------------------------------------------- |
| 1691 | // Navigation: outlines, page labels, named destinations |
| 1692 | // ----------------------------------------------------------------------- |
| 1693 | |
| 1694 | /** |
| 1695 | * Register an Outline root and wire it to the Catalog. Returns the |
| 1696 | * Outline for further configuration (setting First/Last/Count). |
| 1697 | */ |
| 1698 | public function setOutline(Outline $outline): Outline |
| 1699 | { |
| 1700 | $this->writer->register($outline); |
| 1701 | $this->writer->getCatalog()->outlines = new PdfReference($outline->objectNumber); |
| 1702 | return $outline; |
| 1703 | } |
| 1704 | |
| 1705 | /** |
| 1706 | * Register an OutlineItem and return a reference to it. Callers |
| 1707 | * are responsible for linking Prev/Next/First/Last/Parent. |
| 1708 | */ |
| 1709 | public function addOutlineItem(OutlineItem $item): PdfReference |
| 1710 | { |
| 1711 | return $this->writer->register($item); |
| 1712 | } |
| 1713 | |
| 1714 | /** |
| 1715 | * Set a flat page-labels number tree on the Catalog. Pass an |
| 1716 | * associative array of zero-based page index => PageLabel. |
| 1717 | * |
| 1718 | * Example: [0 => $frontMatter, 4 => $mainContent] |
| 1719 | * |
| 1720 | * @param array<int, PageLabel> $labels |
| 1721 | */ |
| 1722 | public function setPageLabels(array $labels): self |
| 1723 | { |
| 1724 | $nums = []; |
| 1725 | ksort($labels); |
| 1726 | foreach ($labels as $pageIndex => $label) { |
| 1727 | $this->writer->register($label); |
| 1728 | $nums[] = new PdfNumber($pageIndex); |
| 1729 | $nums[] = new PdfReference($label->objectNumber); |
| 1730 | } |
| 1731 | |
| 1732 | $tree = new PdfDictionary(['Nums' => new PdfArray($nums)]); |
| 1733 | $treeStream = new PdfStream($tree, ''); |
| 1734 | $this->writer->register($treeStream); |
| 1735 | $this->writer->getCatalog()->pageLabels = new PdfReference($treeStream->objectNumber); |
| 1736 | return $this; |
| 1737 | } |
| 1738 | |
| 1739 | /** |
| 1740 | * Set named destinations on the document. Pass an associative |
| 1741 | * array of name => Destination. |
| 1742 | * |
| 1743 | * @param array<string, Destination> $destinations |
| 1744 | */ |
| 1745 | public function setNamedDestinations(array $destinations): self |
| 1746 | { |
| 1747 | ksort($destinations); |
| 1748 | $namesArray = []; |
| 1749 | foreach ($destinations as $name => $dest) { |
| 1750 | $namesArray[] = new PdfString($name); |
| 1751 | $namesArray[] = $dest; |
| 1752 | } |
| 1753 | |
| 1754 | $nameTree = new NameTree(); |
| 1755 | $nameTree->names = new PdfArray($namesArray); |
| 1756 | $this->writer->register($nameTree); |
| 1757 | |
| 1758 | $namesDict = new PdfDictionary(['Dests' => new PdfReference($nameTree->objectNumber)]); |
| 1759 | $namesDictObj = new PdfStream($namesDict, ''); |
| 1760 | $this->writer->register($namesDictObj); |
| 1761 | $this->writer->getCatalog()->names = new PdfReference($namesDictObj->objectNumber); |
| 1762 | return $this; |
| 1763 | } |
| 1764 | } |