463 lines
14 KiB
PHP
463 lines
14 KiB
PHP
<?php
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/**
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* Zend Framework
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*
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* LICENSE
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*
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* This source file is subject to the new BSD license that is bundled
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* with this package in the file LICENSE.txt.
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* It is also available through the world-wide-web at this URL:
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* http://framework.zend.com/license/new-bsd
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* If you did not receive a copy of the license and are unable to
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* obtain it through the world-wide-web, please send an email
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* to license@zend.com so we can send you a copy immediately.
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*
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* @category Zend
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* @package Zend_Barcode
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* @subpackage Renderer
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* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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* @version $Id$
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*/
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/** @see Zend_Barcode_Renderer_RendererAbstract*/
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/**
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* Class for rendering the barcode as image
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*
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* @category Zend
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* @package Zend_Barcode
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* @copyright Copyright (c) 2005-2015 Zend Technologies USA Inc. (http://www.zend.com)
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* @license http://framework.zend.com/license/new-bsd New BSD License
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*/
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class Zend_Barcode_Renderer_Image extends Zend_Barcode_Renderer_RendererAbstract
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{
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/**
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* List of authorized output format
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* @var array
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*/
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protected $_allowedImageType = array(
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'png',
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'jpeg',
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'gif',
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);
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/**
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* Image format
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* @var string
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*/
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protected $_imageType = 'png';
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/**
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* Resource for the image
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* @var resource
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*/
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protected $_resource = null;
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/**
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* Resource for the font and bars color of the image
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* @var integer
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*/
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protected $_imageForeColor = null;
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/**
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* Resource for the background color of the image
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* @var integer
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*/
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protected $_imageBackgroundColor = null;
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/**
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* Height of the rendered image wanted by user
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* @var integer
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*/
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protected $_userHeight = 0;
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/**
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* Width of the rendered image wanted by user
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* @var integer
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*/
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protected $_userWidth = 0;
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public function __construct($options = null)
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{
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if (!function_exists('gd_info')) {
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throw new Zend_Barcode_Renderer_Exception('Zend_Barcode_Renderer_Image requires the GD extension');
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}
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parent::__construct($options);
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}
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/**
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* Set height of the result image
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*
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* @param null|integer $value
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* @return Zend_Image_Barcode_Abstract
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* @throws Zend_Barcode_Renderer_Exception
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*/
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public function setHeight($value)
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{
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if (!is_numeric($value) || intval($value) < 0) {
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throw new Zend_Barcode_Renderer_Exception(
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'Image height must be greater than or equals 0'
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);
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}
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$this->_userHeight = intval($value);
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return $this;
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}
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/**
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* Get barcode height
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*
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* @return int
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*/
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public function getHeight()
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{
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return $this->_userHeight;
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}
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/**
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* Set barcode width
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*
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* @param mixed $value
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* @return self
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* @throws Zend_Barcode_Renderer_Exception
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*/
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public function setWidth($value)
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{
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if (!is_numeric($value) || intval($value) < 0) {
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throw new Zend_Barcode_Renderer_Exception(
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'Image width must be greater than or equals 0'
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);
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}
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$this->_userWidth = intval($value);
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return $this;
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}
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/**
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* Get barcode width
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*
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* @return int
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*/
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public function getWidth()
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{
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return $this->_userWidth;
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}
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/**
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* Set an image resource to draw the barcode inside
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*
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* @param $image
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* @return Zend_Barcode_Renderer
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* @throws Zend_Barcode_Renderer_Exception
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*/
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public function setResource($image)
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{
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if (gettype($image) != 'resource' || get_resource_type($image) != 'gd') {
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throw new Zend_Barcode_Renderer_Exception(
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'Invalid image resource provided to setResource()'
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);
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}
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$this->_resource = $image;
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return $this;
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}
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/**
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* Set the image type to produce (png, jpeg, gif)
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*
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* @param string $value
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* @return Zend_Barcode_RendererAbstract
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* @throws Zend_Barcode_Renderer_Exception
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*/
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public function setImageType($value)
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{
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if ($value == 'jpg') {
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$value = 'jpeg';
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}
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if (!in_array($value, $this->_allowedImageType)) {
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throw new Zend_Barcode_Renderer_Exception(sprintf(
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'Invalid type "%s" provided to setImageType()',
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$value
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));
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}
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$this->_imageType = $value;
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return $this;
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}
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/**
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* Retrieve the image type to produce
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*
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* @return string
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*/
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public function getImageType()
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{
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return $this->_imageType;
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}
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/**
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* Initialize the image resource
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*
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* @return void
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* @throws Zend_Barcode_Exception
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*/
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protected function _initRenderer()
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{
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if (!extension_loaded('gd')) {
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$e = new Zend_Barcode_Exception(
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'Gd extension must be loaded to render barcode as image'
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);
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$e->setIsRenderable(false);
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throw $e;
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}
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$barcodeWidth = $this->_barcode->getWidth(true);
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$barcodeHeight = $this->_barcode->getHeight(true);
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if ($this->_resource !== null) {
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$foreColor = $this->_barcode->getForeColor();
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$backgroundColor = $this->_barcode->getBackgroundColor();
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$this->_imageBackgroundColor = imagecolorallocate(
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$this->_resource,
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($backgroundColor & 0xFF0000) >> 16,
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($backgroundColor & 0x00FF00) >> 8,
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$backgroundColor & 0x0000FF
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);
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$this->_imageForeColor = imagecolorallocate(
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$this->_resource,
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($foreColor & 0xFF0000) >> 16,
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($foreColor & 0x00FF00) >> 8,
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$foreColor & 0x0000FF
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);
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} else {
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$width = $barcodeWidth;
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$height = $barcodeHeight;
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if ($this->_userWidth && $this->_barcode->getType() != 'error') {
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$width = $this->_userWidth;
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}
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if ($this->_userHeight && $this->_barcode->getType() != 'error') {
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$height = $this->_userHeight;
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}
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$foreColor = $this->_barcode->getForeColor();
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$backgroundColor = $this->_barcode->getBackgroundColor();
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$this->_resource = imagecreatetruecolor($width, $height);
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$this->_imageBackgroundColor = imagecolorallocate(
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$this->_resource,
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($backgroundColor & 0xFF0000) >> 16,
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($backgroundColor & 0x00FF00) >> 8,
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$backgroundColor & 0x0000FF
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);
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$this->_imageForeColor = imagecolorallocate(
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$this->_resource,
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($foreColor & 0xFF0000) >> 16,
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($foreColor & 0x00FF00) >> 8,
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$foreColor & 0x0000FF
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);
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$white = imagecolorallocate($this->_resource, 255, 255, 255);
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imagefilledrectangle($this->_resource, 0, 0, $width - 1, $height - 1, $white);
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}
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$this->_adjustPosition(imagesy($this->_resource), imagesx($this->_resource));
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imagefilledrectangle(
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$this->_resource,
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$this->_leftOffset,
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$this->_topOffset,
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$this->_leftOffset + $barcodeWidth - 1,
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$this->_topOffset + $barcodeHeight - 1,
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$this->_imageBackgroundColor
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);
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}
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/**
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* Check barcode parameters
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*
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* @return void
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*/
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protected function _checkParams()
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{
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$this->_checkDimensions();
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}
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/**
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* Check barcode dimensions
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*
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* @return void
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* @throws Zend_Barcode_Renderer_Exception
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*/
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protected function _checkDimensions()
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{
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if ($this->_resource !== null) {
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if (imagesy($this->_resource) < $this->_barcode->getHeight(true)) {
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throw new Zend_Barcode_Renderer_Exception(
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'Barcode is define outside the image (height)'
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);
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}
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} else {
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if ($this->_userHeight) {
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$height = $this->_barcode->getHeight(true);
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if ($this->_userHeight < $height) {
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throw new Zend_Barcode_Renderer_Exception(sprintf(
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"Barcode is define outside the image (calculated: '%d', provided: '%d')",
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$height,
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$this->_userHeight
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));
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}
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}
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}
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if ($this->_resource !== null) {
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if (imagesx($this->_resource) < $this->_barcode->getWidth(true)) {
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throw new Zend_Barcode_Renderer_Exception(
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'Barcode is define outside the image (width)'
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);
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}
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} else {
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if ($this->_userWidth) {
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$width = $this->_barcode->getWidth(true);
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if ($this->_userWidth < $width) {
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throw new Zend_Barcode_Renderer_Exception(sprintf(
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"Barcode is define outside the image (calculated: '%d', provided: '%d')",
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$width,
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$this->_userWidth
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));
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}
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}
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}
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}
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/**
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* Draw and render the barcode with correct headers
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*
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* @return mixed
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*/
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public function render()
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{
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$this->draw();
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header("Content-Type: image/" . $this->_imageType);
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$functionName = 'image' . $this->_imageType;
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call_user_func($functionName, $this->_resource);
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@imagedestroy($this->_resource);
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}
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/**
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* Draw a polygon in the image resource
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*
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* @param array $points
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* @param integer $color
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* @param boolean $filled
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*/
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protected function _drawPolygon($points, $color, $filled = true)
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{
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$newPoints = array(
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$points[0][0] + $this->_leftOffset,
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$points[0][1] + $this->_topOffset,
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$points[1][0] + $this->_leftOffset,
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$points[1][1] + $this->_topOffset,
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$points[2][0] + $this->_leftOffset,
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$points[2][1] + $this->_topOffset,
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$points[3][0] + $this->_leftOffset,
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$points[3][1] + $this->_topOffset,
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);
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$allocatedColor = imagecolorallocate(
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$this->_resource,
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($color & 0xFF0000) >> 16,
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($color & 0x00FF00) >> 8,
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$color & 0x0000FF
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);
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if ($filled) {
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imagefilledpolygon($this->_resource, $newPoints, 4, $allocatedColor);
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} else {
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imagepolygon($this->_resource, $newPoints, 4, $allocatedColor);
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}
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}
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/**
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* Draw a polygon in the image resource
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*
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* @param string $text
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* @param float $size
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* @param array $position
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* @param string $font
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* @param integer $color
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* @param string $alignment
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* @param float|int $orientation
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* @throws Zend_Barcode_Renderer_Exception
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*/
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protected function _drawText($text, $size, $position, $font, $color, $alignment = 'center', $orientation = 0)
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{
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$allocatedColor = imagecolorallocate(
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$this->_resource,
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($color & 0xFF0000) >> 16,
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($color & 0x00FF00) >> 8,
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$color & 0x0000FF
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);
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if ($font == null) {
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$font = 3;
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}
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$position[0] += $this->_leftOffset;
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$position[1] += $this->_topOffset;
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if (is_numeric($font)) {
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if ($orientation) {
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/**
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* imagestring() doesn't allow orientation, if orientation
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* needed: a TTF font is required.
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* Throwing an exception here, allow to use automaticRenderError
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* to informe user of the problem instead of simply not drawing
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* the text
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*/
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throw new Zend_Barcode_Renderer_Exception(
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'No orientation possible with GD internal font'
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);
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}
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$fontWidth = imagefontwidth($font);
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$positionY = $position[1] - imagefontheight($font) + 1;
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switch ($alignment) {
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case 'left':
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$positionX = $position[0];
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break;
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case 'center':
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$positionX = $position[0] - ceil(($fontWidth * strlen($text)) / 2);
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break;
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case 'right':
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$positionX = $position[0] - ($fontWidth * strlen($text));
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break;
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}
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imagestring($this->_resource, $font, $positionX, $positionY, $text, $color);
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} else {
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if (!function_exists('imagettfbbox')) {
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throw new Zend_Barcode_Renderer_Exception(
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'A font was provided, but this instance of PHP does not have TTF (FreeType) support'
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);
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}
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$box = imagettfbbox($size, 0, $font, $text);
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switch ($alignment) {
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case 'left':
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$width = 0;
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break;
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case 'center':
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$width = ($box[2] - $box[0]) / 2;
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break;
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case 'right':
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$width = ($box[2] - $box[0]);
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break;
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}
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imagettftext(
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$this->_resource,
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$size,
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$orientation,
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$position[0] - ($width * cos(pi() * $orientation / 180)),
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$position[1] + ($width * sin(pi() * $orientation / 180)),
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$allocatedColor,
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$font,
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$text
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);
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}
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}
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}
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