HeaderFooterDrawing.php

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<?php
class PHPExcel_Worksheet_HeaderFooterDrawing extends PHPExcel_Worksheet_Drawing implements PHPExcel_IComparable
{
        private $_path;

        protected $_name;

        protected $_offsetX;

        protected $_offsetY;

        protected $_width;

        protected $_height;

        protected $_resizeProportional;

    public function __construct()
    {
        // Initialise values
        $this->_path                            = '';
        $this->_name                            = '';
        $this->_offsetX                         = 0;
        $this->_offsetY                         = 0;
        $this->_width                           = 0;
        $this->_height                          = 0;
        $this->_resizeProportional      = true;
    }

    public function getName() {
        return $this->_name;
    }

    public function setName($pValue = '') {
        $this->_name = $pValue;
        return $this;
    }

    public function getOffsetX() {
        return $this->_offsetX;
    }

    public function setOffsetX($pValue = 0) {
        $this->_offsetX = $pValue;
        return $this;
    }

    public function getOffsetY() {
        return $this->_offsetY;
    }

    public function setOffsetY($pValue = 0) {
        $this->_offsetY = $pValue;
        return $this;
    }

    public function getWidth() {
        return $this->_width;
    }

    public function setWidth($pValue = 0) {
        // Resize proportional?
        if ($this->_resizeProportional && $pValue != 0) {
                $ratio = $this->_width / $this->_height;
                $this->_height = round($ratio * $pValue);
        }

        // Set width
        $this->_width = $pValue;

        return $this;
    }

    public function getHeight() {
        return $this->_height;
    }

    public function setHeight($pValue = 0) {
        // Resize proportional?
        if ($this->_resizeProportional && $pValue != 0) {
                $ratio = $this->_width / $this->_height;
                $this->_width = round($ratio * $pValue);
        }

        // Set height
        $this->_height = $pValue;

        return $this;
    }

        public function setWidthAndHeight($width = 0, $height = 0) {
                $xratio = $width / $this->_width;
                $yratio = $height / $this->_height;
                if ($this->_resizeProportional && !($width == 0 || $height == 0)) {
                        if (($xratio * $this->_height) < $height) {
                                $this->_height = ceil($xratio * $this->_height);
                                $this->_width  = $width;
                        } else {
                                $this->_width   = ceil($yratio * $this->_width);
                                $this->_height  = $height;
                        }
                }
                return $this;
        }

    public function getResizeProportional() {
        return $this->_resizeProportional;
    }

    public function setResizeProportional($pValue = true) {
        $this->_resizeProportional = $pValue;
        return $this;
    }

    public function getFilename() {
        return basename($this->_path);
    }

    public function getExtension() {
        $parts = explode(".", basename($this->_path));
        return end($parts);
    }

    public function getPath() {
        return $this->_path;
    }

    public function setPath($pValue = '', $pVerifyFile = true) {
        if ($pVerifyFile) {
                if (file_exists($pValue)) {
                        $this->_path = $pValue;

                        if ($this->_width == 0 && $this->_height == 0) {
                                // Get width/height
                                list($this->_width, $this->_height) = getimagesize($pValue);
                        }
                } else {
                        throw new Exception("File $pValue not found!");
                }
        } else {
                $this->_path = $pValue;
        }
        return $this;
    }

        public function getHashCode() {
        return md5(
                  $this->_path
                . $this->_name
                . $this->_offsetX
                . $this->_offsetY
                . $this->_width
                . $this->_height
                . __CLASS__
        );
    }

        public function __clone() {
                $vars = get_object_vars($this);
                foreach ($vars as $key => $value) {
                        if (is_object($value)) {
                                $this->$key = clone $value;
                        } else {
                                $this->$key = $value;
                        }
                }
        }
}