/library/Zend/Barcode/Renderer/Image.php
PHP | 470 lines | 292 code | 35 blank | 143 comment | 41 complexity | bbc01d32aadd492928932e7a29bbc201 MD5 | raw file
- <?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) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
- * @license http://framework.zend.com/license/new-bsd New BSD License
- * @version $Id: Image.php 23775 2011-03-01 17:25:24Z ralph $
- */
- /** @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) 2005-2011 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
- );
- }
- }
- }