<?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

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

/**

 * Class for rendering the barcode

 *

 * @category   Zend

 * @package    Zend_Barcode

 * @license    http://framework.zend.com/license/new-bsd     New BSD License

 */

abstract class Zend_Barcode_Renderer_RendererAbstract

{

    /**

     * Namespace of the renderer for autoloading

     * @var string

     */

    protected $_rendererNamespace = 'Zend_Barcode_Renderer';

    /**

     * Renderer type

     * @var string

     */

    protected $_type = null;

    /**

     * Activate/Deactivate the automatic rendering of exception

     * @var boolean

     */

    protected $_automaticRenderError = false;

    /**

     * Offset of the barcode from the top of the rendering resource

     * @var integer

     */

    protected $_topOffset = 0;

    /**

     * Offset of the barcode from the left of the rendering resource

     * @var integer

     */

    protected $_leftOffset = 0;

    /**

     * Horizontal position of the barcode in the rendering resource

     * @var integer

     */

    protected $_horizontalPosition = 'left';

    /**

     * Vertical position of the barcode in the rendering resource

     * @var integer

     */

    protected $_verticalPosition = 'top';

    /**

     * Module size rendering

     * @var float

     */

    protected $_moduleSize = 1;

    /**

     * Barcode object

     * @var Zend_Barcode_Object_ObjectAbstract

     */

    protected $_barcode;

    /**

     * Drawing resource

     */

    protected $_resource;

    /**

     * Constructor

     * @param array|Zend_Config $options

     */

    public function __construct($options = null)

    {

        if ($options instanceof Zend_Config) {

            $options = $options->toArray();

        }

        if (is_array($options)) {

            $this->setOptions($options);

        }

        $this->_type = strtolower(substr(

            get_class($this),

            strlen($this->_rendererNamespace) + 1

        ));

    }

    /**

     * Set renderer state from options array

     * @param  array $options

     * @return Zend_Renderer_Object

     */

    public function setOptions($options)

    {

        foreach ($options as $key => $value) {

            $method = 'set' . $key;

            if (method_exists($this, $method)) {

                $this->$method($value);

            }

        }

        return $this;

    }

    /**

     * Set renderer state from config object

     * @param Zend_Config $config

     * @return Zend_Renderer_Object

     */

    public function setConfig(Zend_Config $config)

    {

        return $this->setOptions($config->toArray());

    }

    /**

     * Set renderer namespace for autoloading

     *

     * @param string $namespace

     * @return Zend_Renderer_Object

     */

    public function setRendererNamespace($namespace)

    {

        $this->_rendererNamespace = $namespace;

        return $this;

    }

    /**

     * Retrieve renderer namespace

     *

     * @return string

     */

    public function getRendererNamespace()

    {

        return $this->_rendererNamespace;

    }

    /**

     * Retrieve renderer type

     * @return string

     */

    public function getType()

    {

        return $this->_type;

    }

    /**

     * Manually adjust top position

     * @param integer $value

     * @return Zend_Barcode_Renderer

     */

    public function setTopOffset($value)

    {

        if (!is_numeric($value) || intval($value) < 0) {

            require_once 'Zend/Barcode/Renderer/Exception.php';

            throw new Zend_Barcode_Renderer_Exception(

                'Vertical position must be greater than or equals 0'

            );

        }

        $this->_topOffset = intval($value);

        return $this;

    }

    /**

     * Retrieve vertical adjustment

     * @return integer

     */

    public function getTopOffset()

    {

        return $this->_topOffset;

    }

    /**

     * Manually adjust left position

     * @param integer $value

     * @return Zend_Barcode_Renderer

     */

    public function setLeftOffset($value)

    {

        if (!is_numeric($value) || intval($value) < 0) {

            require_once 'Zend/Barcode/Renderer/Exception.php';

            throw new Zend_Barcode_Renderer_Exception(

                'Horizontal position must be greater than or equals 0'

            );

        }

        $this->_leftOffset = intval($value);

        return $this;

    }

    /**

     * Retrieve vertical adjustment

     * @return integer

     */

    public function getLeftOffset()

    {

        return $this->_leftOffset;

    }

    /**

     * Activate/Deactivate the automatic rendering of exception

     * @param boolean $value

     */

    public function setAutomaticRenderError($value)

    {

        $this->_automaticRenderError = (bool) $value;

        return $this;

    }

    /**

     * Horizontal position of the barcode in the rendering resource

     * @param string $value

     * @return Zend_Barcode_Renderer

     */

    public function setHorizontalPosition($value)

    {

        if (!in_array($value, array('left' , 'center' , 'right'))) {

            require_once 'Zend/Barcode/Renderer/Exception.php';

            throw new Zend_Barcode_Renderer_Exception(

                "Invalid barcode position provided must be 'left', 'center' or 'right'"

            );

        }

        $this->_horizontalPosition = $value;

        return $this;

    }

    /**

     * Horizontal position of the barcode in the rendering resource

     * @return string

     */

    public function getHorizontalPosition()

    {

        return $this->_horizontalPosition;

    }

    /**

     * Vertical position of the barcode in the rendering resource

     * @param string $value

     */

    public function setVerticalPosition($value)

    {

        if (!in_array($value, array('top' , 'middle' , 'bottom'))) {

            require_once 'Zend/Barcode/Renderer/Exception.php';

            throw new Zend_Barcode_Renderer_Exception(

                "Invalid barcode position provided must be 'top', 'middle' or 'bottom'"

            );

        }

        $this->_verticalPosition = $value;

        return $this;

    }

    /**

     * Vertical position of the barcode in the rendering resource

     * @return string

     */

    public function getVerticalPosition()

    {

        return $this->_verticalPosition;

    }

    /**

     * Set the size of a module

     * @param float $value

     * @return Zend_Barcode_Renderer

     */

    public function setModuleSize($value)

    {

        if (!is_numeric($value) || floatval($value) <= 0) {

            require_once 'Zend/Barcode/Renderer/Exception.php';

            throw new Zend_Barcode_Renderer_Exception(

                'Float size must be greater than 0'

            );

        }

        $this->_moduleSize = floatval($value);

        return $this;

    }

    /**

     * Set the size of a module

     * @return float

     */

    public function getModuleSize()

    {

        return $this->_moduleSize;

    }

    /**

     * Retrieve the automatic rendering of exception

     * @return boolean

     */

    public function getAutomaticRenderError()

    {

        return $this->_automaticRenderError;

    }

    /**

     * Set the barcode object

     * @param Zend_Barcode_Object $barcode

     * @return Zend_Barcode_Renderer

     */

    public function setBarcode($barcode)

    {

        if (!$barcode instanceof Zend_Barcode_Object_ObjectAbstract) {

            require_once 'Zend/Barcode/Renderer/Exception.php';

            throw new Zend_Barcode_Renderer_Exception(

                'Invalid barcode object provided to setBarcode()'

            );

        }

        $this->_barcode = $barcode;

        return $this;

    }

    /**

     * Retrieve the barcode object

     * @return Zend_Barcode_Object

     */

    public function getBarcode()

    {

        return $this->_barcode;

    }

    /**

     * Checking of parameters after all settings

     * @return boolean

     */

    public function checkParams()

    {

        $this->_checkBarcodeObject();

        $this->_checkParams();

        return true;

    }

    /**

     * Check if a barcode object is correctly provided

     * @return void

     */

    protected function _checkBarcodeObject()

    {

        if ($this->_barcode === null) {

            /**

             * @see Zend_Barcode_Renderer_Exception

             */

            require_once 'Zend/Barcode/Renderer/Exception.php';

            throw new Zend_Barcode_Renderer_Exception(

                'No barcode object provided'

            );

        }

    }

    /**

     * Calculate the left and top offset of the barcode in the

     * rendering support

     *

     * @param float $supportHeight

     * @param float $supportWidth

     * @return void

     */

    protected function _adjustPosition($supportHeight, $supportWidth)

    {

        $barcodeHeight = $this->_barcode->getHeight(true) * $this->_moduleSize;

        if ($barcodeHeight != $supportHeight && $this->_topOffset == 0) {

            switch ($this->_verticalPosition) {

                case 'middle':

                    $this->_topOffset = floor(

                            ($supportHeight - $barcodeHeight) / 2);

                    break;

                case 'bottom':

                    $this->_topOffset = $supportHeight - $barcodeHeight;

                    break;

                case 'top':

                default:

                    $this->_topOffset = 0;

                    break;

            }

        }

        $barcodeWidth = $this->_barcode->getWidth(true) * $this->_moduleSize;

        if ($barcodeWidth != $supportWidth && $this->_leftOffset == 0) {

            switch ($this->_horizontalPosition) {

                case 'center':

                    $this->_leftOffset = floor(

                            ($supportWidth - $barcodeWidth) / 2);

                    break;

                case 'right':

                    $this->_leftOffset = $supportWidth - $barcodeWidth;

                    break;

                case 'left':

                default:

                    $this->_leftOffset = 0;

                    break;

            }

        }

    }

    /**

     * Draw the barcode in the rendering resource

     * @return mixed

     */

    public function draw()

    {

        try {

            $this->checkParams();

            $this->_initRenderer();

            $this->_drawInstructionList();

        } catch (Zend_Exception $e) {

            $renderable = false;

            if ($e instanceof Zend_Barcode_Exception) {

                $renderable = $e->isRenderable();

            }

            if ($this->_automaticRenderError && $renderable) {

                $barcode = Zend_Barcode::makeBarcode(

                    'error',

                    array('text' => $e->getMessage())

                );

                $this->setBarcode($barcode);

                $this->_resource = null;

                $this->_initRenderer();