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| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * This file is part of PHPWord - A pure PHP library for reading and writing |
| 5 | * word processing documents. |
| 6 | * |
| 7 | * PHPWord is free software distributed under the terms of the GNU Lesser |
| 8 | * General Public License version 3 as published by the Free Software Foundation. |
| 9 | * |
| 10 | * For the full copyright and license information, please read the LICENSE |
| 11 | * file that was distributed with this source code. For the full list of |
| 12 | * contributors, visit https://github.com/PHPOffice/PHPWord/contributors. |
| 13 | * |
| 14 | * @see https://github.com/PHPOffice/PHPWord |
| 15 | * |
| 16 | * @license http://www.gnu.org/licenses/lgpl.txt LGPL version 3 |
| 17 | */ |
| 18 | |
| 19 | namespace PhpOffice\PhpWord\Element; |
| 20 | |
| 21 | use PhpOffice\PhpWord\Exception\CreateTemporaryFileException; |
| 22 | use PhpOffice\PhpWord\Exception\InvalidImageException; |
| 23 | use PhpOffice\PhpWord\Exception\UnsupportedImageTypeException; |
| 24 | use PhpOffice\PhpWord\Settings; |
| 25 | use PhpOffice\PhpWord\Shared\Metafile; |
| 26 | use PhpOffice\PhpWord\Shared\ZipArchive; |
| 27 | use PhpOffice\PhpWord\Style\Image as ImageStyle; |
| 28 | use RuntimeException; |
| 29 | |
| 30 | /** |
| 31 | * Image element. |
| 32 | */ |
| 33 | class Image extends AbstractElement |
| 34 | { |
| 35 | /** |
| 36 | * Image source type constants. |
| 37 | */ |
| 38 | const SOURCE_LOCAL = 'local'; // Local images |
| 39 | const SOURCE_GD = 'gd'; // Generated using GD |
| 40 | const SOURCE_ARCHIVE = 'archive'; // Image in archives zip://$archive#$image |
| 41 | const SOURCE_STRING = 'string'; // Image from string |
| 42 | |
| 43 | /** |
| 44 | * Image source. |
| 45 | * |
| 46 | * @var string |
| 47 | */ |
| 48 | private $source; |
| 49 | |
| 50 | /** |
| 51 | * Source type: local|gd|archive. |
| 52 | * |
| 53 | * @var string |
| 54 | */ |
| 55 | private $sourceType; |
| 56 | |
| 57 | /** |
| 58 | * Image style. |
| 59 | * |
| 60 | * @var ?ImageStyle |
| 61 | */ |
| 62 | private $style; |
| 63 | |
| 64 | /** |
| 65 | * Is watermark. |
| 66 | * |
| 67 | * @var bool |
| 68 | */ |
| 69 | private $watermark; |
| 70 | |
| 71 | /** |
| 72 | * Name of image. |
| 73 | * |
| 74 | * @var null|string |
| 75 | */ |
| 76 | private $name; |
| 77 | |
| 78 | /** |
| 79 | * Image alt text. |
| 80 | * |
| 81 | * @var null|string |
| 82 | */ |
| 83 | private $altText; |
| 84 | |
| 85 | /** |
| 86 | * Image type. |
| 87 | * |
| 88 | * @var string |
| 89 | */ |
| 90 | private $imageType; |
| 91 | |
| 92 | /** |
| 93 | * Image create function. |
| 94 | * |
| 95 | * @var string |
| 96 | */ |
| 97 | private $imageCreateFunc; |
| 98 | |
| 99 | /** |
| 100 | * Image function. |
| 101 | * |
| 102 | * @var null|callable(resource): void |
| 103 | */ |
| 104 | private $imageFunc; |
| 105 | |
| 106 | /** |
| 107 | * Image extension. |
| 108 | * |
| 109 | * @var string |
| 110 | */ |
| 111 | private $imageExtension; |
| 112 | |
| 113 | /** |
| 114 | * Image quality. |
| 115 | * |
| 116 | * Functions imagepng() and imagejpeg() have an optional parameter for |
| 117 | * quality. |
| 118 | * |
| 119 | * @var null|int |
| 120 | */ |
| 121 | private $imageQuality; |
| 122 | |
| 123 | /** |
| 124 | * Is memory image. |
| 125 | * |
| 126 | * @var bool |
| 127 | */ |
| 128 | private $memoryImage; |
| 129 | |
| 130 | /** |
| 131 | * Image target file name. |
| 132 | * |
| 133 | * @var string |
| 134 | */ |
| 135 | private $target; |
| 136 | |
| 137 | /** |
| 138 | * Image media index. |
| 139 | * |
| 140 | * @var int |
| 141 | */ |
| 142 | private $mediaIndex; |
| 143 | |
| 144 | /** |
| 145 | * Has media relation flag; true for Link, Image, and Object. |
| 146 | * |
| 147 | * @var bool |
| 148 | */ |
| 149 | protected $mediaRelation = true; |
| 150 | |
| 151 | /** |
| 152 | * Create new image element. |
| 153 | * |
| 154 | * @param string $source |
| 155 | * @param mixed $style |
| 156 | * @param bool $watermark |
| 157 | * @param null|string $name |
| 158 | * @param null|string $altText |
| 159 | */ |
| 160 | public function __construct($source, $style = null, $watermark = false, $name = null, $altText = null) |
| 161 | { |
| 162 | $this->source = $source; |
| 163 | $this->style = $this->setNewStyle(new ImageStyle(), $style, true); |
| 164 | $this->setIsWatermark($watermark); |
| 165 | $this->setName($name); |
| 166 | $this->setAltText($altText); |
| 167 | |
| 168 | $this->checkImage(); |
| 169 | } |
| 170 | |
| 171 | /** |
| 172 | * Get Image style. |
| 173 | * |
| 174 | * @return ?ImageStyle |
| 175 | */ |
| 176 | public function getStyle() |
| 177 | { |
| 178 | return $this->style; |
| 179 | } |
| 180 | |
| 181 | /** |
| 182 | * Get image source. |
| 183 | * |
| 184 | * @return string |
| 185 | */ |
| 186 | public function getSource() |
| 187 | { |
| 188 | return $this->source; |
| 189 | } |
| 190 | |
| 191 | /** |
| 192 | * Get image source type. |
| 193 | * |
| 194 | * @return string |
| 195 | */ |
| 196 | public function getSourceType() |
| 197 | { |
| 198 | return $this->sourceType; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * Sets the image name. |
| 203 | * |
| 204 | * @param null|string $value |
| 205 | */ |
| 206 | public function setName($value): void |
| 207 | { |
| 208 | $this->name = $value; |
| 209 | } |
| 210 | |
| 211 | /** |
| 212 | * Get image alt text. |
| 213 | */ |
| 214 | public function getAltText(): ?string |
| 215 | { |
| 216 | return $this->altText; |
| 217 | } |
| 218 | |
| 219 | /** |
| 220 | * Sets the image alt text. |
| 221 | */ |
| 222 | public function setAltText(?string $value): void |
| 223 | { |
| 224 | $this->altText = $value; |
| 225 | } |
| 226 | |
| 227 | /** |
| 228 | * Get image name. |
| 229 | * |
| 230 | * @return null|string |
| 231 | */ |
| 232 | public function getName() |
| 233 | { |
| 234 | return $this->name; |
| 235 | } |
| 236 | |
| 237 | /** |
| 238 | * Get image media ID. |
| 239 | * |
| 240 | * @return string |
| 241 | */ |
| 242 | public function getMediaId() |
| 243 | { |
| 244 | return md5($this->source); |
| 245 | } |
| 246 | |
| 247 | /** |
| 248 | * Get is watermark. |
| 249 | * |
| 250 | * @return bool |
| 251 | */ |
| 252 | public function isWatermark() |
| 253 | { |
| 254 | return $this->watermark; |
| 255 | } |
| 256 | |
| 257 | /** |
| 258 | * Set is watermark. |
| 259 | * |
| 260 | * @param bool $value |
| 261 | */ |
| 262 | public function setIsWatermark($value): void |
| 263 | { |
| 264 | $this->watermark = $value; |
| 265 | } |
| 266 | |
| 267 | /** |
| 268 | * Get image type. |
| 269 | * |
| 270 | * @return string |
| 271 | */ |
| 272 | public function getImageType() |
| 273 | { |
| 274 | return $this->imageType; |
| 275 | } |
| 276 | |
| 277 | /** |
| 278 | * Get image create function. |
| 279 | * |
| 280 | * @return string |
| 281 | */ |
| 282 | public function getImageCreateFunction() |
| 283 | { |
| 284 | return $this->imageCreateFunc; |
| 285 | } |
| 286 | |
| 287 | /** |
| 288 | * Get image function. |
| 289 | * |
| 290 | * @return null|callable(resource): void |
| 291 | */ |
| 292 | public function getImageFunction(): ?callable |
| 293 | { |
| 294 | return $this->imageFunc; |
| 295 | } |
| 296 | |
| 297 | /** |
| 298 | * Get image quality. |
| 299 | */ |
| 300 | public function getImageQuality(): ?int |
| 301 | { |
| 302 | return $this->imageQuality; |
| 303 | } |
| 304 | |
| 305 | /** |
| 306 | * Get image extension. |
| 307 | * |
| 308 | * @return string |
| 309 | */ |
| 310 | public function getImageExtension() |
| 311 | { |
| 312 | return $this->imageExtension; |
| 313 | } |
| 314 | |
| 315 | /** |
| 316 | * Get is memory image. |
| 317 | * |
| 318 | * @return bool |
| 319 | */ |
| 320 | public function isMemImage() |
| 321 | { |
| 322 | return $this->memoryImage; |
| 323 | } |
| 324 | |
| 325 | /** |
| 326 | * Get target file name. |
| 327 | * |
| 328 | * @return string |
| 329 | */ |
| 330 | public function getTarget() |
| 331 | { |
| 332 | return $this->target; |
| 333 | } |
| 334 | |
| 335 | /** |
| 336 | * Set target file name. |
| 337 | * |
| 338 | * @param string $value |
| 339 | */ |
| 340 | public function setTarget($value): void |
| 341 | { |
| 342 | $this->target = $value; |
| 343 | } |
| 344 | |
| 345 | /** |
| 346 | * Get media index. |
| 347 | * |
| 348 | * @return int |
| 349 | */ |
| 350 | public function getMediaIndex() |
| 351 | { |
| 352 | return $this->mediaIndex; |
| 353 | } |
| 354 | |
| 355 | /** |
| 356 | * Set media index. |
| 357 | * |
| 358 | * @param int $value |
| 359 | */ |
| 360 | public function setMediaIndex($value): void |
| 361 | { |
| 362 | $this->mediaIndex = $value; |
| 363 | } |
| 364 | |
| 365 | /** |
| 366 | * Get image string. |
| 367 | */ |
| 368 | public function getImageString(): ?string |
| 369 | { |
| 370 | $source = $this->source; |
| 371 | $actualSource = null; |
| 372 | $imageBinary = null; |
| 373 | $isTemp = false; |
| 374 | |
| 375 | // Get actual source from archive image or other source |
| 376 | // Return null if not found |
| 377 | if ($this->sourceType == self::SOURCE_ARCHIVE) { |
| 378 | $source = substr($source, 6); |
| 379 | [$zipFilename, $imageFilename] = explode('#', $source); |
| 380 | |
| 381 | $zip = new ZipArchive(); |
| 382 | if ($zip->open($zipFilename) !== false) { |
| 383 | if ($zip->locateName($imageFilename) !== false) { |
| 384 | $isTemp = true; |
| 385 | $zip->extractTo(Settings::getTempDir(), $imageFilename); |
| 386 | $actualSource = Settings::getTempDir() . DIRECTORY_SEPARATOR . $imageFilename; |
| 387 | } |
| 388 | } |
| 389 | $zip->close(); |
| 390 | } else { |
| 391 | $actualSource = $source; |
| 392 | } |
| 393 | |
| 394 | // Can't find any case where $actualSource = null hasn't captured by |
| 395 | // preceding exceptions. Please uncomment when you find the case and |
| 396 | // put the case into Element\ImageTest. |
| 397 | // if ($actualSource === null) { |
| 398 | // return null; |
| 399 | // } |
| 400 | |
| 401 | // Read image binary data and convert to hex/base64 string |
| 402 | if ($this->sourceType == self::SOURCE_GD) { |
| 403 | if (!extension_loaded('gd')) { |
| 404 | throw new RuntimeException('The GD extension is required to process GD images.'); |
| 405 | } |
| 406 | $imageResource = call_user_func($this->imageCreateFunc, $actualSource); |
| 407 | if ($this->imageType === 'image/png') { |
| 408 | // PNG images need to preserve alpha channel information |
| 409 | imagesavealpha($imageResource, true); |
| 410 | } |
| 411 | ob_start(); |
| 412 | $callback = $this->imageFunc; |
| 413 | $callback($imageResource); |
| 414 | $imageBinary = ob_get_contents(); |
| 415 | ob_end_clean(); |
| 416 | } elseif ($this->sourceType == self::SOURCE_STRING) { |
| 417 | $imageBinary = $this->source; |
| 418 | } else { |
| 419 | $fileHandle = fopen($actualSource, 'rb', false); |
| 420 | $fileSize = filesize($actualSource); |
| 421 | if ($fileHandle !== false && $fileSize > 0) { |
| 422 | $imageBinary = fread($fileHandle, $fileSize); |
| 423 | fclose($fileHandle); |
| 424 | } |
| 425 | } |
| 426 | |
| 427 | // Delete temporary file if necessary |
| 428 | if ($isTemp === true) { |
| 429 | @unlink($actualSource); |
| 430 | } |
| 431 | |
| 432 | return $imageBinary; |
| 433 | } |
| 434 | |
| 435 | /** |
| 436 | * Is a Windows metafile (WMF, EMF or EMF+). |
| 437 | */ |
| 438 | public function isMetafile(): bool |
| 439 | { |
| 440 | return Metafile::isMimeType($this->imageType); |
| 441 | } |
| 442 | |
| 443 | /** |
| 444 | * Get image string, converted to PNG if the image is a Windows metafile. |
| 445 | * |
| 446 | * Used by the writers whose output doesn't support metafiles (like HTML). |
| 447 | */ |
| 448 | public function getImageStringForRendering(): ?string |
| 449 | { |
| 450 | $imageBinary = $this->getImageString(); |
| 451 | if ($imageBinary === null || !$this->isMetafile()) { |
| 452 | return $imageBinary; |
| 453 | } |
| 454 | |
| 455 | return Metafile::convertToPng($imageBinary); |
| 456 | } |
| 457 | |
| 458 | /** |
| 459 | * Get image type of the image string returned by getImageStringForRendering(). |
| 460 | */ |
| 461 | public function getImageTypeForRendering(): string |
| 462 | { |
| 463 | return $this->isMetafile() ? 'image/png' : $this->imageType; |
| 464 | } |
| 465 | |
| 466 | /** |
| 467 | * Get image string data. |
| 468 | * |
| 469 | * @param bool $base64 |
| 470 | * |
| 471 | * @return null|string |
| 472 | * |
| 473 | * @since 0.11.0 |
| 474 | */ |
| 475 | public function getImageStringData($base64 = false) |
| 476 | { |
| 477 | $imageBinary = $this->getImageString(); |
| 478 | if ($imageBinary === null) { |
| 479 | return null; |
| 480 | } |
| 481 | |
| 482 | if ($base64) { |
| 483 | return base64_encode($imageBinary); |
| 484 | } |
| 485 | |
| 486 | return bin2hex($imageBinary); |
| 487 | } |
| 488 | |
| 489 | /** |
| 490 | * Check memory image, supported type, image functions, and proportional width/height. |
| 491 | */ |
| 492 | private function checkImage(): void |
| 493 | { |
| 494 | $this->setSourceType(); |
| 495 | |
| 496 | // Check image data |
| 497 | if ($this->sourceType == self::SOURCE_ARCHIVE) { |
| 498 | $imageData = $this->getArchiveImageSize($this->source); |
| 499 | } elseif ($this->sourceType == self::SOURCE_STRING) { |
| 500 | $imageData = @getimagesizefromstring($this->source); |
| 501 | } else { |
| 502 | $imageData = @getimagesize($this->source); |
| 503 | } |
| 504 | if (!is_array($imageData) && $this->sourceType != self::SOURCE_GD) { |
| 505 | $imageData = $this->getMetafileImageSize(); |
| 506 | } |
| 507 | if (!is_array($imageData)) { |
| 508 | throw new InvalidImageException(sprintf('Invalid image: %s', $this->source)); |
| 509 | } |
| 510 | [$actualWidth, $actualHeight, $imageType] = $imageData; |
| 511 | |
| 512 | // Windows metafiles (WMF, EMF, EMF+) |
| 513 | if (Metafile::isMimeType($imageType)) { |
| 514 | $this->imageType = $imageType; |
| 515 | $this->imageExtension = Metafile::getExtension($imageType); |
| 516 | $this->setProportionalSize($actualWidth, $actualHeight); |
| 517 | |
| 518 | return; |
| 519 | } |
| 520 | |
| 521 | // Check image type support |
| 522 | $supportedTypes = [IMAGETYPE_JPEG, IMAGETYPE_GIF, IMAGETYPE_PNG]; |
| 523 | if ($this->sourceType != self::SOURCE_GD && $this->sourceType != self::SOURCE_STRING) { |
| 524 | $supportedTypes = array_merge($supportedTypes, [IMAGETYPE_BMP, IMAGETYPE_TIFF_II, IMAGETYPE_TIFF_MM]); |
| 525 | } |
| 526 | if (!in_array($imageType, $supportedTypes)) { |
| 527 | throw new UnsupportedImageTypeException(); |
| 528 | } |
| 529 | |
| 530 | // Define image functions |
| 531 | $this->imageType = image_type_to_mime_type($imageType); |
| 532 | $this->setFunctions(); |
| 533 | $this->setProportionalSize($actualWidth, $actualHeight); |
| 534 | } |
| 535 | |
| 536 | /** |
| 537 | * Set source type. |
| 538 | */ |
| 539 | private function setSourceType(): void |
| 540 | { |
| 541 | if (stripos(strrev($this->source), strrev('.php')) === 0) { |
| 542 | $this->memoryImage = true; |
| 543 | $this->sourceType = self::SOURCE_GD; |
| 544 | } elseif (strpos($this->source, 'zip://') !== false) { |
| 545 | $this->memoryImage = false; |
| 546 | $this->sourceType = self::SOURCE_ARCHIVE; |
| 547 | } elseif (filter_var($this->source, FILTER_VALIDATE_URL) !== false) { |
| 548 | $this->memoryImage = true; |
| 549 | if (strpos($this->source, 'https') === 0) { |
| 550 | $fileContent = file_get_contents($this->source); |
| 551 | $this->source = $fileContent; |
| 552 | $this->sourceType = self::SOURCE_STRING; |
| 553 | } else { |
| 554 | $this->sourceType = self::SOURCE_GD; |
| 555 | } |
| 556 | } elseif ((strpos($this->source, chr(0)) === false) && @file_exists($this->source)) { |
| 557 | $this->memoryImage = false; |
| 558 | $this->sourceType = self::SOURCE_LOCAL; |
| 559 | } else { |
| 560 | $this->memoryImage = true; |
| 561 | $this->sourceType = self::SOURCE_STRING; |
| 562 | } |
| 563 | } |
| 564 | |
| 565 | /** |
| 566 | * Get image size from archive. |
| 567 | * |
| 568 | * @since 0.12.0 Throws CreateTemporaryFileException. |
| 569 | * |
| 570 | * @param string $source |
| 571 | * |
| 572 | * @return null|array |
| 573 | */ |
| 574 | private function getArchiveImageSize($source) |
| 575 | { |
| 576 | $imageData = null; |
| 577 | $source = substr($source, 6); |
| 578 | [$zipFilename, $imageFilename] = explode('#', $source); |
| 579 | |
| 580 | $tempFilename = tempnam(Settings::getTempDir(), 'PHPWordImage'); |
| 581 | if (false === $tempFilename) { |
| 582 | throw new CreateTemporaryFileException(); // @codeCoverageIgnore |
| 583 | } |
| 584 | |
| 585 | $zip = new ZipArchive(); |
| 586 | if ($zip->open($zipFilename) !== false) { |
| 587 | if ($zip->locateName($imageFilename) !== false) { |
| 588 | $imageContent = $zip->getFromName($imageFilename); |
| 589 | if ($imageContent !== false) { |
| 590 | file_put_contents($tempFilename, $imageContent); |
| 591 | $imageData = getimagesize($tempFilename); |
| 592 | unlink($tempFilename); |
| 593 | } |
| 594 | } |
| 595 | $zip->close(); |
| 596 | } |
| 597 | |
| 598 | return $imageData; |
| 599 | } |
| 600 | |
| 601 | /** |
| 602 | * Get size and mime type of a Windows metafile (WMF, EMF, EMF+) : [width, height, mimeType]. |
| 603 | * |
| 604 | * @return null|array{0: int, 1: int, 2: string} |
| 605 | */ |
| 606 | private function getMetafileImageSize(): ?array |
| 607 | { |
| 608 | $imageBinary = $this->getImageString(); |
| 609 | if (empty($imageBinary)) { |
| 610 | return null; |
| 611 | } |
| 612 | |
| 613 | return Metafile::getImageSize($imageBinary); |
| 614 | } |
| 615 | |
| 616 | /** |
| 617 | * Set image functions and extensions. |
| 618 | */ |
| 619 | private function setFunctions(): void |
| 620 | { |
| 621 | switch ($this->imageType) { |
| 622 | case 'image/png': |
| 623 | $this->imageCreateFunc = $this->sourceType == self::SOURCE_STRING ? 'imagecreatefromstring' : 'imagecreatefrompng'; |
| 624 | $this->imageFunc = function ($resource): void { |
| 625 | imagepng($resource, null, $this->imageQuality); |
| 626 | }; |
| 627 | $this->imageExtension = 'png'; |
| 628 | $this->imageQuality = -1; |
| 629 | |
| 630 | break; |
| 631 | case 'image/gif': |
| 632 | $this->imageCreateFunc = $this->sourceType == self::SOURCE_STRING ? 'imagecreatefromstring' : 'imagecreatefromgif'; |
| 633 | $this->imageFunc = function ($resource): void { |
| 634 | imagegif($resource); |
| 635 | }; |
| 636 | $this->imageExtension = 'gif'; |
| 637 | $this->imageQuality = null; |
| 638 | |
| 639 | break; |
| 640 | case 'image/jpeg': |
| 641 | case 'image/jpg': |
| 642 | $this->imageCreateFunc = $this->sourceType == self::SOURCE_STRING ? 'imagecreatefromstring' : 'imagecreatefromjpeg'; |
| 643 | $this->imageFunc = function ($resource): void { |
| 644 | imagejpeg($resource, null, $this->imageQuality); |
| 645 | }; |
| 646 | $this->imageExtension = 'jpg'; |
| 647 | $this->imageQuality = 100; |
| 648 | |
| 649 | break; |
| 650 | case 'image/bmp': |
| 651 | case 'image/x-ms-bmp': |
| 652 | $this->imageType = 'image/bmp'; |
| 653 | $this->imageFunc = null; |
| 654 | $this->imageExtension = 'bmp'; |
| 655 | $this->imageQuality = null; |
| 656 | |
| 657 | break; |
| 658 | case 'image/tiff': |
| 659 | $this->imageType = 'image/tiff'; |
| 660 | $this->imageFunc = null; |
| 661 | $this->imageExtension = 'tif'; |
| 662 | $this->imageQuality = null; |
| 663 | |
| 664 | break; |
| 665 | } |
| 666 | } |
| 667 | |
| 668 | /** |
| 669 | * Set proportional width/height if one dimension not available. |
| 670 | * |
| 671 | * @param int $actualWidth |
| 672 | * @param int $actualHeight |
| 673 | */ |
| 674 | private function setProportionalSize($actualWidth, $actualHeight): void |
| 675 | { |
| 676 | $styleWidth = $this->style->getWidth(); |
| 677 | $styleHeight = $this->style->getHeight(); |
| 678 | if (!($styleWidth && $styleHeight)) { |
| 679 | if ($styleWidth == null && $styleHeight == null) { |
| 680 | $this->style->setWidth($actualWidth); |
| 681 | $this->style->setHeight($actualHeight); |
| 682 | } elseif ($styleWidth) { |
| 683 | $this->style->setHeight($actualHeight * ($styleWidth / $actualWidth)); |
| 684 | } else { |
| 685 | $this->style->setWidth($actualWidth * ($styleHeight / $actualHeight)); |
| 686 | } |
| 687 | } |
| 688 | } |
| 689 | } |