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<?php |
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namespace Posprint\Graphics; |
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/** |
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* Basic method for graphics classes |
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* |
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* @category NFePHP |
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* @package Posprint |
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* @copyright Copyright (c) 2016 |
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* @license http://www.gnu.org/licenses/lesser.html LGPL v3 |
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* @author Roberto L. Machado <linux dot rlm at gmail dot com> |
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* @link http://github.com/nfephp-org/posprint for the canonical source repository |
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*/ |
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abstract class Basic |
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{ |
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/** |
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* Image GD |
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* @var resource |
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*/ |
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protected $img; |
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/** |
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* Image Height |
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* @var int |
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*/ |
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protected $imgHeight = 0; |
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/** |
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* Image Width |
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* @var int |
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*/ |
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protected $imgWidth = 0; |
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/** |
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* @return int height of the image in pixels |
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*/ |
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public function getHeight() |
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{ |
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return $this->imgHeight; |
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} |
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/** |
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* @return int Number of bytes to represent a row of this image |
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*/ |
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public function getHeightBytes() |
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{ |
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return (int)(($this->imgHeight + 7) / 8); |
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} |
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/** |
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* @return int Width of the image |
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*/ |
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public function getWidth() |
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{ |
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return $this->imgWidth; |
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} |
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/** |
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* @return int Number of bytes to represent a row of this image |
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*/ |
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public function getWidthBytes() |
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{ |
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return (int)(($this->imgWidth + 7) / 8); |
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} |
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/** |
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* zGetDimImage |
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* Get width and height of resource image |
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* and save in properties |
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* @return array with dimentions of image |
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*/ |
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protected function getDimImage() |
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{ |
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if (!is_resource($this->img)) { |
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return; |
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} |
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$this->imgHeight = imagesy($this->img); |
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$this->imgWidth = imagesx($this->img); |
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return ['height' => $this->imgHeight, 'width' => $this->imgWidth]; |
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} |
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/** |
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* @return boolean True if GD is supported, false otherwise (a wrapper for the version, for mocking in tests) |
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*/ |
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protected function isGdSupported() |
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{ |
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return $this->isGdLoaded(); |
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} |
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/** |
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* @return boolean True if GD is loaded, false otherwise |
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*/ |
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protected function isGdLoaded() |
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{ |
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$this->gdImgProcessing = extension_loaded('gd'); |
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return $this->gdImgProcessing; |
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} |
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/** |
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* identifyImg |
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* Identifies image file type |
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* @param string $filename |
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* @return string |
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*/ |
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protected function identifyImg($filename) |
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{ |
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$imgtype = exif_imagetype($filename); |
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$aImgTypes = [ |
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0 => 'NULL', |
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1 => 'GIF', |
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2 => 'JPEG', |
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3 => 'PNG', |
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4 => 'SWF', |
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5 => 'PSD', |
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6 => 'BMP', |
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7 => 'TIFF_II', |
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8 => 'TIFF_MM', |
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9 => 'JPC', |
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10 => 'JP2', |
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11 => 'JPX', |
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12 => 'JB2', |
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13 => 'SWC', |
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14 => 'IFF', |
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15 => 'WBMP', |
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16 => 'XBM', |
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17 => 'ICO']; |
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return $aImgTypes[$imgtype]; |
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} |
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} |
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nfephp-org /
posprint
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: