Added Line Spacing to RichText Paragraphs

src/PhpPowerpoint/Shape/RichText/Paragraph.php

@@ -21,6 +21,7 @@
 use PhpOffice\PhpPowerpoint\Style\Alignment;
 use PhpOffice\PhpPowerpoint\Style\Bullet;
 use PhpOffice\PhpPowerpoint\Style\Font;
+use PhpOffice\PhpPowerpoint\Style\Spacing;
 
 /**
  * \PhpOffice\PhpPowerpoint\Shape\RichText\Paragraph
@@ -48,6 +49,13 @@ class Paragraph implements ComparableInterface
      */
     private $font;
 
+    /**
+     * Spacing
+     *
+     * @var \PhpOffice\PhpPowerpoint\Style\Spacing
+     */
+    private $spacing;
+
     /**
      * Bullet style
      *
@@ -71,6 +79,7 @@ public function __construct()
         $this->richTextElements = array();
         $this->alignment        = new Alignment();
         $this->font             = new Font();
+        $this->spacing          = new Spacing();
         $this->bulletStyle      = new Bullet();
     }
 
@@ -121,6 +130,30 @@ public function setFont(Font $pFont = null)
         return $this;
     }
 
+    /**
+     * Get spacing
+     *
+     * @return \PhpOffice\PhpPowerpoint\Style\Spacing
+     */
+    public function getSpacing()
+    {
+        return $this->spacing;
+    }
+
+    /**
+     * Set spacing
+     *
+     * @param  \PhpOffice\PhpPowerpoint\Style\Spacing               $pFont Spacing
+     * @throws \Exception
+     * @return \PhpOffice\PhpPowerpoint\Shape\RichText\Paragraph
+     */
+    public function setSpacing(Spacing $pSpacing = null)
+    {
+        $this->spacing = $pSpacing;
+
+        return $this;
+    }
+
     /**
      * Get bullet style
      *

src/PhpPowerpoint/Style/Spacing.php

@@ -0,0 +1,114 @@
+<?php
+/**
+* This file is part of PHPPowerPoint - A pure PHP library for reading and writing
+* presentations documents.
+*
+* PHPPowerPoint is free software distributed under the terms of the GNU Lesser
+* General Public License version 3 as published by the Free Software Foundation.
+*
+* For the full copyright and license information, please read the LICENSE
+* file that was distributed with this source code. For the full list of
+* contributors, visit https://github.com/PHPOffice/PHPWord/contributors.
+*
+* @link        https://github.com/PHPOffice/PHPPowerPoint
+* @copyright   2009-2014 PHPPowerPoint contributors
+* @license     http://www.gnu.org/licenses/lgpl.txt LGPL version 3
+*/
+
+namespace PhpOffice\PhpPowerpoint\Style;
+
+use PhpOffice\PhpPowerpoint\ComparableInterface;
+
+/**
+* \PhpOffice\PhpPowerpoint\Style\Spacing
+*/
+class Spacing implements ComparableInterface
+{
+    /* Line Heights */
+    const HEIGHT_SINGLE		  = 100000;
+    const HEIGHT_SESQUISINGLE = 150000;
+    const HEIGHT_DOUBLE		  = 200000;
+
+    /**
+    * Line Height
+    *
+    * @var int
+    */
+    private $lineHeight;
+
+    /**
+    * Hash index
+    *
+    * @var string
+    */
+    private $hashIndex;
+
+    /**
+    * Create a new \PhpOffice\PhpPowerpoint\Style\Spacing
+    */
+    public function __construct()
+    {
+        // Initialise values
+        $this->lineHeight = self::HEIGHT_SINGLE;
+    }
+
+    /**
+    * Get Spacing
+    *
+    * @return int
+    */
+    public function getSpacing()
+    {
+        return $this->lineHeight;
+    }
+    /**
+    * Set Spacing
+    *
+    * @param  int                   $pValue
+    * @return \PhpOffice\PhpPowerpoint\Style\Spacing
+    */
+    public function setSpacing($pValue = self::HEIGHT_SINGLE)
+    {
+        if ( !is_numeric( $pValue ) ) {
+            $pValue = self::HEIGHT_SINGLE;
+        }
+        $this->lineHeight = $pValue;
+
+        return $this;
+    }
+    /**
+    * Get hash code
+    *
+    * @return string Hash code
+    */
+    public function getHashCode()
+    {
+        return md5($this->lineHeight . __CLASS__);
+    }
+
+    /**
+    * Get hash index
+    *
+    * Note that this index may vary during script execution! Only reliable moment is
+    * while doing a write of a workbook and when changes are not allowed.
+    *
+    * @return string Hash index
+    */
+    public function getHashIndex()
+    {
+        return $this->hashIndex;
+    }
+
+    /**
+    * Set hash index
+    *
+    * Note that this index may vary during script execution! Only reliable moment is
+    * while doing a write of a workbook and when changes are not allowed.
+    *
+    * @param string $value Hash index
+    */
+    public function setHashIndex($value)
+    {
+        $this->hashIndex = $value;
+    }
+}

src/PhpPowerpoint/Writer/PowerPoint2007/Slide.php

@@ -827,6 +827,12 @@ private function writeParagraphs(XMLWriter $objWriter, $paragraphs)
             $objWriter->writeAttribute('indent', SharedDrawing::pixelsToEmu($paragraph->getAlignment()->getIndent()));
             $objWriter->writeAttribute('lvl', $paragraph->getAlignment()->getLevel());
 
+            $objWriter->startElement('a:lnSpc');
+            $objWriter->startElement('a:spcPct');
+            $objWriter->writeAttribute('val', $paragraph->getSpacing()->getSpacing());
+            $objWriter->endElement();
+            $objWriter->endElement();
+
             // Bullet type specified?
             if ($paragraph->getBulletStyle()->getBulletType() != Bullet::TYPE_NONE) {
                 // a:buFont