<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Barcode
* @subpackage Renderer
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id$
*/
/** @see Zend_Barcode_Renderer_RendererAbstract*/
require_once 'Zend/Barcode/Renderer/RendererAbstract.php';
/**
* Class for rendering the barcode as image
*
* @category Zend
* @package Zend_Barcode
* @copyright Copyright (c) 2005-2014 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Barcode_Renderer_Image extends Zend_Barcode_Renderer_RendererAbstract
{
/**
* List of authorized output format
* @var array
*/
protected $_allowedImageType = array(
'png',
'jpeg',
'gif',
);
/**
* Image format
* @var string
*/
protected $_imageType = 'png';
/**
* Resource for the image
* @var resource
*/
protected $_resource = null;
/**
* Resource for the font and bars color of the image
* @var integer
*/
protected $_imageForeColor = null;
/**
* Resource for the background color of the image
* @var integer
*/
protected $_imageBackgroundColor = null;
/**
* Height of the rendered image wanted by user
* @var integer
*/
protected $_userHeight = 0;
/**
* Width of the rendered image wanted by user
* @var integer
*/
protected $_userWidth = 0;
public function __construct($options = null)
{
if (!function_exists('gd_info')) {
require_once 'Zend/Barcode/Renderer/Exception.php';
throw new Zend_Barcode_Renderer_Exception('Zend_Barcode_Renderer_Image requires the GD extension');
}
parent::__construct($options);
}
/**
* Set height of the result image
* @param null|integer $value
* @return Zend_Image_Barcode_Abstract
* @throw Zend_Image_Barcode_Exception
*/
public function setHeight($value)
{
if (!is_numeric($value) || intval($value) < 0) {
require_once 'Zend/Barcode/Renderer/Exception.php';
throw new Zend_Barcode_Renderer_Exception(
'Image height must be greater than or equals 0'
);
}
$this->_userHeight = intval($value);
return $this;
}
/**
* Get barcode height
*
* @return int
*/
public function getHeight()
{
return $this->_userHeight;
}
/**
* Set barcode width
*
* @param mixed $value
* @return void
*/
public function setWidth($value)
{
if (!is_numeric($value) || intval($value) < 0) {
require_once 'Zend/Barcode/Renderer/Exception.php';
throw new Zend_Barcode_Renderer_Exception(
'Image width must be greater than or equals 0'
);
}
$this->_userWidth = intval($value);
return $this;
}
/**
* Get barcode width
*
* @return int
*/
public function getWidth()
{
return $this->_userWidth;
}
/**
* Set an image resource to draw the barcode inside
*
* @param resource $value
* @return Zend_Barcode_Renderer
* @throw Zend_Barcode_Renderer_Exception
*/
public function setResource($image)
{
if (gettype($image) != 'resource' || get_resource_type($image) != 'gd') {
require_once 'Zend/Barcode/Renderer/Exception.php';
throw new Zend_Barcode_Renderer_Exception(
'Invalid image resource provided to setResource()'
);
}
$this->_resource = $image;
return $this;
}
/**
* Set the image type to produce (png, jpeg, gif)
*
* @param string $value
* @return Zend_Barcode_RendererAbstract
* @throw Zend_Barcode_Renderer_Exception
*/
public function setImageType($value)
{
if ($value == 'jpg') {
$value = 'jpeg';
}
if (!in_array($value, $this->_allowedImageType)) {
require_once 'Zend/Barcode/Renderer/Exception.php';
throw new Zend_Barcode_Renderer_Exception(sprintf(
'Invalid type "%s" provided to setImageType()',
$value
));
}
$this->_imageType = $value;
return $this;
}
/**
* Retrieve the image type to produce
*
* @return string
*/
public function getImageType()
{
return $this->_imageType;
}
/**
* Initialize the image resource
*
* @return void
*/
protected function _initRenderer()
{
if (!extension_loaded('gd')) {
require_once 'Zend/Barcode/Exception.php';
$e = new Zend_Barcode_Exception(
'Gd extension must be loaded to render barcode as image'
);
$e->setIsRenderable(false);
throw $e;
}
$barcodeWidth = $this->_barcode->getWidth(true);
$barcodeHeight = $this->_barcode->getHeight(true);
if ($this->_resource !== null) {
$foreColor = $this->_barcode->getForeColor();
$backgroundColor = $this->_barcode->getBackgroundColor();
$this->_imageBackgroundColor = imagecolorallocate(
$this->_resource,
($backgroundColor & 0xFF0000) >> 16,
($backgroundColor & 0x00FF00) >> 8,
$backgroundColor & 0x0000FF
);
$this->_imageForeColor = imagecolorallocate(
$this->_resource,
($foreColor & 0xFF0000) >> 16,
($foreColor & 0x00FF00) >> 8,
$foreColor & 0x0000FF
);
} else {
$width = $barcodeWidth;
$height = $barcodeHeight;
if ($this->_userWidth && $this->_barcode->getType() != 'error') {
$width = $this->_userWidth;
}
if ($this->_userHeight && $this->_barcode->getType() != 'error') {
$height = $this->_userHeight;
}
$foreColor = $this->_barcode->getForeColor();
$backgroundColor = $this->_barcode->getBackgroundColor();
$this->_resource = imagecreatetruecolor($width, $height);
$this->_imageBackgroundColor = imagecolorallocate(
$this->_resource,
($backgroundColor & 0xFF0000) >> 16,
($backgroundColor & 0x00FF00) >> 8,
$backgroundColor & 0x0000FF
);
$this->_imageForeColor = imagecolorallocate(
$this->_resource,
($foreColor & 0xFF0000) >> 16,
($foreColor & 0x00FF00) >> 8,
$foreColor & 0x0000FF
);
$white = imagecolorallocate($this->_resource, 255, 255, 255);
imagefilledrectangle($this->_resource, 0, 0, $width - 1, $height - 1, $white);
}
$this->_adjustPosition(imagesy($this->_resource), imagesx($this->_resource));
imagefilledrectangle(
$this->_resource,
$this->_leftOffset,
$this->_topOffset,
$this->_leftOffset + $barcodeWidth - 1,
$this->_topOffset + $barcodeHeight - 1,
$this->_imageBackgroundColor
);
}
/**
* Check barcode parameters
*
* @return void
*/
protected function _checkParams()
{
$this->_checkDimensions();
}
/**
* Check barcode dimensions
*
* @return void
*/
protected function _checkDimensions()
{
if ($this->_resource !== null) {
if (imagesy($this->_resource) < $this->_barcode->getHeight(true)) {
require_once 'Zend/Barcode/Renderer/Exception.php';
throw new Zend_Barcode_Renderer_Exception(
'Barcode is define outside the image (height)'
);
}
} else {
if ($this->_userHeight) {
$height = $this->_barcode->getHeight(true);
if ($this->_userHeight < $height) {
require_once 'Zend/Barcode/Renderer/Exception.php';
throw new Zend_Barcode_Renderer_Exception(sprintf(
"Barcode is define outside the image (calculated: '%d', provided: '%d')",
$height,
$this->_userHeight
));
}
}
}
if ($this->_resource !== null) {
if (imagesx($this->_resource) < $this->_barcode->getWidth(true)) {
require_once 'Zend/Barcode/Renderer/Exception.php';
throw new Zend_Barcode_Renderer_Exception(
'Barcode is define outside the image (width)'
);
}
} else {
if ($this->_userWidth) {
$width = $this->_barcode->getWidth(true);
if ($this->_userWidth < $width) {
require_once 'Zend/Barcode/Renderer/Exception.php';
throw new Zend_Barcode_Renderer_Exception(sprintf(
"Barcode is define outside the image (calculated: '%d', provided: '%d')",
$width,
$this->_userWidth
));
}
}
}
}
/**
* Draw and render the barcode with correct headers
*
* @return mixed
*/
public function render()
{
$this->draw();
header("Content-Type: image/" . $this->_imageType);
$functionName = 'image' . $this->_imageType;
call_user_func($functionName, $this->_resource);
@imagedestroy($this->_resource);
}
/**
* Draw a polygon in the image resource
*
* @param array $points
* @param integer $color
* @param boolean $filled
*/
protected function _drawPolygon($points, $color, $filled = true)
{
$newPoints = array(
$points[0][0] + $this->_leftOffset,
$points[0][1] + $this->_topOffset,
$points[1][0] + $this->_leftOffset,
$points[1][1] + $this->_topOffset,
$points[2][0] + $this->_leftOffset,
$points[2][1] + $this->_topOffset,
$points[3][0] + $this->_leftOffset,
$points[3][1] + $this->_topOffset,
);
$allocatedColor = imagecolorallocate(
$this->_resource,
($color & 0xFF0000) >> 16,
($color & 0x00FF00) >> 8,
$color & 0x0000FF
);
if ($filled) {
imagefilledpolygon($this->_resource, $newPoints, 4, $allocatedColor);
} else {
imagepolygon($this->_resource, $newPoints, 4, $allocatedColor);
}
}
/**
* Draw a polygon in the image resource
*
* @param string $text
* @param float $size
* @param array $position
* @param string $font
* @param integer $color
* @param string $alignment
* @param float $orientation
*/
protected function _drawText($text, $size, $position, $font, $color, $alignment = 'center', $orientation = 0)
{
$allocatedColor = imagecolorallocate(
$this->_resource,
($color & 0xFF0000) >> 16,
($color & 0x00FF00) >> 8,
$color & 0x0000FF
);
if ($font == null) {
$font = 3;
}
$position[0] += $this->_leftOffset;
$position[1] += $this->_topOffset;
if (is_numeric($font)) {
if ($orientation) {
/**
* imagestring() doesn't allow orientation, if orientation
* needed: a TTF font is required.
* Throwing an exception here, allow to use automaticRenderError
* to informe user of the problem instead of simply not drawing
* the text
*/
require_once 'Zend/Barcode/Renderer/Exception.php';
throw new Zend_Barcode_Renderer_Exception(
'No orientation possible with GD internal font'
);
}
$fontWidth = imagefontwidth($font);
$positionY = $position[1] - imagefontheight($font) + 1;
switch ($alignment) {
case 'left':
$positionX = $position[0];
break;
case 'center':
$positionX = $position[0] - ceil(($fontWidth * strlen($text)) / 2);
break;
case 'right':
$positionX = $position[0] - ($fontWidth * strlen($text));
break;
}
imagestring($this->_resource, $font, $positionX, $positionY, $text, $color);
} else {
if (!function_exists('imagettfbbox')) {
require_once 'Zend/Barcode/Renderer/Exception.php';
throw new Zend_Barcode_Renderer_Exception(
'A font was provided, but this instance of PHP does not have TTF (FreeType) support'
);
}
$box = imagettfbbox($size, 0, $font, $text);
switch ($alignment) {
case 'left':
$width = 0;
break;
case 'center':
$width = ($box[2] - $box[0]) / 2;
break;
case 'right':
$width = ($box[2] - $box[0]);
break;
}
imagettftext(
$this->_resource,
$size,
$orientation,
$position[0] - ($width * cos(pi() * $orientation / 180)),
$position[1] + ($width * sin(pi() * $orientation / 180)),
$allocatedColor,
$font,
$text
);
}
}
}