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<?php |
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namespace floor12\imagenator; |
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use floor12\imagenator\exception\FontNotFoundException; |
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use floor12\imagenator\exception\ImageNotFoundException; |
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use floor12\imagenator\exception\InvalidFontSizeException as InvalidFontSizeExceptionAlias; |
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use floor12\imagenator\exception\InvalidHexColorException; |
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use floor12\imagenator\exception\InvalidPositionValueException; |
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use floor12\imagenator\exception\InvalidRowHeightException; |
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use floor12\imagenator\exception\InvalidWordPerPageException; |
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class Imagenator |
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{ |
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const DEFAULT_IMAGE = __DIR__ . '/../assets/default.png'; |
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/** |
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* @var string Path to TTF font file |
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*/ |
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protected $font = __DIR__ . '/../assets/Rubik.ttf'; |
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/** |
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* @var string |
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*/ |
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protected $text = "Dont forget to put some text here :-)"; |
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/** |
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* @var false|resource |
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*/ |
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protected $image; |
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/** |
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* @var int |
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*/ |
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protected $imageWidth; |
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/** |
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* @var int |
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*/ |
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protected $imageHeight; |
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/** |
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* @var int |
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*/ |
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protected $wordsPerRow = 7; |
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/** |
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* @var int |
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*/ |
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protected $rowHeight = 8; |
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/** |
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* @var int |
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*/ |
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protected $textPositionPercentY = 50; |
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/** |
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* @var int |
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*/ |
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protected $textPositionPercentX = 5; |
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/** |
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* @var int Default color is white |
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*/ |
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private $textColor = '16777215'; |
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/** |
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* @var int |
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*/ |
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private $fontSizeInPercents = 5; |
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/** |
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* Imagenator constructor. |
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* @param string $backgroundImagePath |
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* @throws ImageNotFoundException |
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*/ |
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public function __construct(string $backgroundImagePath = self::DEFAULT_IMAGE) |
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{ |
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$this->loadImage($backgroundImagePath); |
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} |
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/** |
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* @param string $backgroundImagePath |
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* @throws ImageNotFoundException |
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*/ |
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protected function loadImage(string $backgroundImagePath) |
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{ |
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if (!file_exists($backgroundImagePath)) |
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throw new ImageNotFoundException(); |
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$this->image = imagecreatefrompng($backgroundImagePath); |
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list($this->imageWidth, $this->imageHeight) = getimagesize($backgroundImagePath); |
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} |
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/** |
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* @param string $resultImagePath |
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* @return bool |
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* @throws FontNotFoundException |
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*/ |
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public function generate(string $resultImagePath): bool |
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{ |
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$this->putTextToImage(); |
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return $this->saveImage($resultImagePath); |
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} |
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/** |
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* @param string $pathToSave |
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* @return bool |
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*/ |
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protected function saveImage(string $pathToSave): bool |
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{ |
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return imagepng($this->image, $pathToSave) && imagedestroy($this->image); |
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} |
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/** |
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* @throws FontNotFoundException |
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*/ |
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protected function putTextToImage(): void |
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{ |
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if (!file_exists($this->font)) |
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throw new FontNotFoundException(); |
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$wordsArray = explode(' ', $this->text); |
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$rows = array_chunk($wordsArray, $this->wordsPerRow); |
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$positionStartY = $this->imageHeight / 100 * $this->textPositionPercentY; |
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$rowHeightInPx = $this->imageHeight / 100 * $this->rowHeight; |
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$fontSizeInPx = $this->imageHeight / 100 * $this->fontSizeInPercents; |
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$positionX = $this->imageWidth / 100 * $this->textPositionPercentX; |
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$lastRowNumber = sizeof($rows) - 1; |
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$wordToWrap = ''; |
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foreach ($rows as $stringNumber => $wordsArray) { |
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$lastWordInRow = $wordsArray[sizeof($wordsArray) - 1]; |
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$lastWordInRowLength = strlen($lastWordInRow); |
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if (!empty($wordToWrap)) { |
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array_unshift($wordsArray, $wordToWrap); |
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$wordToWrap = ''; |
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} |
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if ($lastWordInRowLength <= 2 && $stringNumber != $lastRowNumber) { |
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$wordToWrap = array_pop($wordsArray); |
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} |
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$string = implode(' ', $wordsArray); |
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$positionY = $positionStartY + $stringNumber * $rowHeightInPx; |
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imagettftext($this->image, $fontSizeInPx, 0, $positionX, $positionY, $this->textColor, $this->font, $string); |
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} |
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} |
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/** |
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* @param string $text |
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* @return self |
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*/ |
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public function setText(string $text): self |
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{ |
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$this->text = $text; |
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return $this; |
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} |
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/** |
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* @param string $font |
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* @return self |
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*/ |
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public function setFont(string $font): self |
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{ |
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$this->font = $font; |
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return $this; |
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} |
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/** |
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* @param string $colorInHex |
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* @return self |
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* @throws InvalidHexColorException |
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*/ |
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public function setColor(string $colorInHex): self |
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{ |
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$colorInHex = str_replace('#', '', $colorInHex); |
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if (!ctype_xdigit($colorInHex) || strlen($colorInHex) !== 6) |
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throw new InvalidHexColorException(); |
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$red = hexdec(substr($colorInHex, 0, 2)); |
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$green = hexdec(substr($colorInHex, 2, 2)); |
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$blue = hexdec(substr($colorInHex, 4, 2)); |
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$this->textColor = imagecolorallocate($this->image, $red, $green, $blue); |
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return $this; |
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} |
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/** |
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* @param int $size |
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* @return Imagenator |
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* @throws InvalidFontSizeExceptionAlias |
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*/ |
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public function setFontSize(int $size) |
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{ |
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if ($size < 1 || $size > 20) |
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throw new InvalidFontSizeExceptionAlias(); |
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$this->fontSizeInPercents = $size; |
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return $this; |
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} |
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/** |
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* @param int $wordsPerRow |
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* @return Imagenator |
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* @throws InvalidWordPerPageException |
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*/ |
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public function setWordsPerRow(int $wordsPerRow) |
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{ |
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if ($wordsPerRow < 1 || $wordsPerRow > 30) |
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throw new InvalidWordPerPageException(); |
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$this->wordsPerRow = $wordsPerRow; |
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return $this; |
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} |
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/** |
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* @param int $percent |
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* @return Imagenator |
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* @throws InvalidPositionValueException |
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*/ |
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public function setPositionX(int $percent) |
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{ |
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if ($percent < 1 || $percent > 100) |
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throw new InvalidPositionValueException(); |
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$this->textPositionPercentX = $percent; |
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return $this; |
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} |
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/** |
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* @param int $percent |
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* @return Imagenator |
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* @throws InvalidPositionValueException |
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*/ |
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public function setPositionY(int $percent) |
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{ |
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if ($percent < 1 || $percent > 100) |
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throw new InvalidPositionValueException(); |
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$this->textPositionPercentY = $percent; |
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return $this; |
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} |
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/** |
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* @param int $percent |
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* @return Imagenator |
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* @throws InvalidRowHeightException |
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*/ |
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public function setRowHeight(int $percent) |
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{ |
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if ($percent < 1 || $percent > 30) |
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throw new InvalidRowHeightException(); |
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$this->rowHeight = $percent; |
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return $this; |
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} |
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} |
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