- Fixed issue #10830: Automatically shorten labels if not enough space is

  available

17 files changed, 407 insertions, 63 deletions

diff --git a/ChangeLog b/ChangeLog
index 6c7038c..95946a6 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -20,6 +20,8 @@
 - Fixed issue #10846: Division by zero in polygon size reducement algorithm
   for edges with an angle equals 0 degree.
 - Fixed issue #10852: Fixed radar chart documentation
+- Fixed issue #10830: Automatically shorten labels if not enough space is
+  available
 
 1.1beta1 - Monday 07 May 2007
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
diff --git a/src/driver/flash.php b/src/driver/flash.php
index 38c07a2..74de773 100644
--- a/src/driver/flash.php
+++ b/src/driver/flash.php
@@ -309,26 +309,33 @@ class ezcGraphFlashDriver extends ezcGraphDriver
             $size = $this->modifyCoordinate( floor( ( $newsize = $size * ( $result ) ) >= $size ? $size - 1 : $newsize ) );
         }
 
-        if ( is_array( $result ) )
+        if ( !is_array( $result ) )
         {
-            $this->options->font->minimalUsedFont = $this->deModifyCoordinate( $size );
-
-            $this->strings[] = array(
-                'text' => $result,
-                'id' => $id = 'ezcGraphTextBox_' . $this->id++,
-                'position' => $position,
-                'width' => $width,
-                'height' => $height,
-                'align' => $align,
-                'font' => $this->options->font,
-                'rotation' => $rotation,
-            );
-        }
-        else
-        {
-            throw new ezcGraphFontRenderingException( $string, $this->options->font->minFontSize, $width, $height );
+            if ( ( $height >= $this->options->font->minFontSize ) &&
+                 ( $this->options->autoShortenString ) )
+            {
+                $result = $this->tryFitShortenedString( $string, $position, $width, $height, $size = $this->modifyCoordinate( $this->options->font->minFontSize ) );
+            } 
+            else
+            {
+                throw new ezcGraphFontRenderingException( $string, $this->options->font->minFontSize, $width, $height );
+            }
         }
 
+
+        $this->options->font->minimalUsedFont = $this->deModifyCoordinate( $size );
+
+        $this->strings[] = array(
+            'text' => $result,
+            'id' => $id = 'ezcGraphTextBox_' . $this->id++,
+            'position' => $position,
+            'width' => $width,
+            'height' => $height,
+            'align' => $align,
+            'font' => $this->options->font,
+            'rotation' => $rotation,
+        );
+
         return $id;
     }
     
diff --git a/src/driver/gd.php b/src/driver/gd.php
index c398261..a3bea95 100644
--- a/src/driver/gd.php
+++ b/src/driver/gd.php
@@ -426,25 +426,31 @@ class ezcGraphGdDriver extends ezcGraphDriver
             $size = floor( ( $newsize = $size * ( $result ) ) >= $size ? $size - 1 : $newsize );
         }
 
-        if ( is_array( $result ) )
+        if ( !is_array( $result ) )
         {
-            $this->options->font->minimalUsedFont = $size;
-
-            $this->strings[] = array(
-                'text' => $result,
-                'position' => $position,
-                'width' => $width,
-                'height' => $height,
-                'align' => $align,
-                'font' => $this->options->font,
-                'rotation' => $rotation,
-            );
-        }
-        else
-        {
-            throw new ezcGraphFontRenderingException( $string, $this->options->font->minFontSize, $width, $height );
+            if ( ( $height >= $this->options->font->minFontSize ) &&
+                 ( $this->options->autoShortenString ) )
+            {
+                $result = $this->tryFitShortenedString( $string, $position, $width, $height, $size = $this->options->font->minFontSize );
+            } 
+            else
+            {
+                throw new ezcGraphFontRenderingException( $string, $this->options->font->minFontSize, $width, $height );
+            }
         }
 
+        $this->options->font->minimalUsedFont = $size;
+
+        $this->strings[] = array(
+            'text' => $result,
+            'position' => $position,
+            'width' => $width,
+            'height' => $height,
+            'align' => $align,
+            'font' => $this->options->font,
+            'rotation' => $rotation,
+        );
+
         return array(
             clone $position,
             new ezcGraphCoordinate( $position->x + $width, $position->y ),
diff --git a/src/driver/svg.php b/src/driver/svg.php
index bfbf95c..81e2aed 100644
--- a/src/driver/svg.php
+++ b/src/driver/svg.php
@@ -457,7 +457,15 @@ class ezcGraphSvgDriver extends ezcGraphDriver
         
         if ( !is_array( $result ) )
         {
-            throw new ezcGraphFontRenderingException( $string, $this->options->font->minFontSize, $width, $height );
+            if ( ( $height >= $this->options->font->minFontSize ) &&
+                 ( $this->options->autoShortenString ) )
+            {
+                $result = $this->tryFitShortenedString( $string, $position, $width, $height, $size = $this->options->font->minFontSize );
+            } 
+            else
+            {
+                throw new ezcGraphFontRenderingException( $string, $this->options->font->minFontSize, $width, $height );
+            }
         }
 
         $this->options->font->minimalUsedFont = $size;
diff --git a/src/interfaces/driver.php b/src/interfaces/driver.php
index cb8857a..b9a55dd 100644
--- a/src/interfaces/driver.php
+++ b/src/interfaces/driver.php
@@ -498,6 +498,108 @@ abstract class ezcGraphDriver
     }
 
     /**
+     * If it is allow to shortened the string, this method tries to extract as
+     * many chars as possible to display a decent amount of characters.
+     *
+     * If no complete token (word) does fit, the largest possible amount of 
+     * chars from the first word are taken. If the amount of chars is bigger
+     * then strlen( shortenedStringPostFix ) * 2 the last chars are replace by
+     * the postfix.
+     *
+     * If one complete word fits the box as many words are taken as possible 
+     * including a appended shortenedStringPostFix.
+     * 
+     * @param mixed $string 
+     * @param ezcGraphCoordinate $position 
+     * @param mixed $width 
+     * @param mixed $height 
+     * @param mixed $size 
+     * @access protected
+     * @return void
+     */
+    protected function tryFitShortenedString( $string, ezcGraphCoordinate $position, $width, $height, $size )
+    {
+        $tokens = preg_split( '/\s+/', $string );
+
+        // Try to fit a complete word first
+        $boundings = $this->getTextBoundings( 
+            $size, 
+            $this->options->font, 
+            reset( $tokens ) . ( $postfix = $this->options->autoShortenStringPostFix )
+        );
+
+        if ( $boundings->width > $width )
+        {
+            // Not even one word fits the box
+            $word = reset( $tokens );
+
+            // Test if first character fits the box
+            $boundigs = $this->getTextBoundings(
+                $size,
+                $this->options->font,
+                $hit = $word[0]
+            );
+
+            if ( $boundigs->width > $width )
+            {
+                // That is a really small box.
+                throw new ezcGraphFontRenderingException( $string, $size, $width, $height );
+            }
+
+            // Try to put more charactes in there
+            $postLength = strlen( $postfix );
+            $wordLength = strlen( $word );
+            for ( $i = 2; $i <= $wordLength; ++$i )
+            {
+                $string = substr( $word, 0, $i );
+                if ( strlen( $string ) > ( $postLength << 1 ) )
+                {
+                    $string = substr( $string, 0, -$postLength ) . $postfix;
+                }
+
+                $boundigs = $this->getTextBoundings( $size, $this->options->font, $string );
+
+                if ( $boundigs->width < $width )
+                {
+                    $hit = $string;
+                }
+                else
+                {
+                    // Use last string which fit
+                    break;
+                }
+            }
+        }
+        else
+        {
+            // Try to use as many words as possible
+            $hit = reset( $tokens );
+
+            for ( $i = 2; $i < count( $tokens ); ++$i )
+            {
+                $string = implode( ' ', array_slice( $tokens, 0, $i ) ) . 
+                    $postfix;
+
+                $boundings = $this->getTextBoundings( $size, $this->options->font, $string );
+
+                if ( $boundings->width <= $width )
+                {
+                    $hit .= ' ' . $tokens[$i - 1];
+                }
+                else
+                {
+                    // Use last valid hit
+                    break;
+                }
+            }
+
+            $hit .= $postfix;
+        }
+
+        return array( array( $hit ) );
+    }
+
+    /**
      * Writes text in a box of desired size
      * 
      * @param string $string Text
diff --git a/src/options/driver.php b/src/options/driver.php
index eb353af..b967192 100644
--- a/src/options/driver.php
+++ b/src/options/driver.php
@@ -20,6 +20,10 @@
  *           Percent of font size used for line spacing
  * @property int $font
  *           Font used in the graph.
+ * @property bool $autoShortenString
+ *           Automatically shorten string if it does not fit into a box
+ * @property string $autoShortenStringPostFix
+ *           String to append to shortened strings, if there is enough space
  *
  * @package Graph
  */
@@ -42,6 +46,9 @@ abstract class ezcGraphDriverOptions extends ezcBaseOptions
         $this->properties['font'] = new ezcGraphFontOptions();
         $this->properties['font']->color = ezcGraphColor::fromHex( '#000000' );
 
+        $this->properties['autoShortenString'] = true;
+        $this->properties['autoShortenStringPostFix'] = '..';
+
         parent::__construct( $options );
     }
 
@@ -106,6 +113,19 @@ abstract class ezcGraphDriverOptions extends ezcBaseOptions
                     throw new ezcBaseValueException( $propertyName, $propertyValue, 'ezcGraphFontOptions' );
                 }
                 break;
+            case 'autoShortenString':
+                if ( is_bool( $propertyValue ) )
+                {
+                    $this->properties['autoShortenString'] = $propertyValue;
+                }
+                else
+                {
+                    throw new ezcBaseValueException( $propertyName, $propertyValue, 'boolean' );
+                }
+                break;
+            case 'autoShortenStringPostFix':
+                $this->properties['autoShortenStringPostFix'] = (string) $propertyValue;
+                break;
             default:
                 throw new ezcBasePropertyNotFoundException( $propertyName );
                 break;
diff --git a/tests/data/compare/ezcGraphFlashDriverTest_testShortenStringMoreChars.swf b/tests/data/compare/ezcGraphFlashDriverTest_testShortenStringMoreChars.swf
new file mode 100644
index 0000000..4ace166
--- /dev/null
+++ b/tests/data/compare/ezcGraphFlashDriverTest_testShortenStringMoreChars.swf
diff --git a/tests/data/compare/ezcGraphGdDriverTest_testShortenStringMoreChars.png b/tests/data/compare/ezcGraphGdDriverTest_testShortenStringMoreChars.png
new file mode 100644
index 0000000..5df0996
--- /dev/null
+++ b/tests/data/compare/ezcGraphGdDriverTest_testShortenStringMoreChars.png
diff --git a/tests/data/compare/ezcGraphSvgDriverTest_testShortenSingleChar.svg b/tests/data/compare/ezcGraphSvgDriverTest_testShortenSingleChar.svg
new file mode 100644
index 0000000..6f62296
--- /dev/null
+++ b/tests/data/compare/ezcGraphSvgDriverTest_testShortenSingleChar.svg
@@ -0,0 +1,2 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg" width="200" height="100" version="1.0" id="ezcGraph"><defs/><g id="ezcGraphChart" color-rendering="optimizeQuality" shape-rendering="geometricPrecision" text-rendering="optimizeLegibility"><g id="ezcGraphTextBox_1"><path d=" M 9.5000,17.0000 L 9.5000,9.5000 L 14.1800,9.5000 L 14.1800,17.0000 L 9.5000,17.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_2"/><text id="ezcGraphTextBox_1_text" x="10.0000" text-length="3.1800px" y="15.1000" style="font-size: 6px; font-family: sans-serif; fill: #000000; fill-opacity: 1.00; stroke: none;">T</text></g></g></svg>
diff --git a/tests/data/compare/ezcGraphSvgDriverTest_testShortenStringFewChars.svg b/tests/data/compare/ezcGraphSvgDriverTest_testShortenStringFewChars.svg
new file mode 100644
index 0000000..0670328
--- /dev/null
+++ b/tests/data/compare/ezcGraphSvgDriverTest_testShortenStringFewChars.svg
@@ -0,0 +1,2 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg" width="200" height="100" version="1.0" id="ezcGraph"><defs/><g id="ezcGraphChart" color-rendering="optimizeQuality" shape-rendering="geometricPrecision" text-rendering="optimizeLegibility"><g id="ezcGraphTextBox_1"><path d=" M 9.5000,17.0000 L 9.5000,9.5000 L 17.3600,9.5000 L 17.3600,17.0000 L 9.5000,17.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_2"/><text id="ezcGraphTextBox_1_text" x="10.0000" text-length="6.3600px" y="15.1000" style="font-size: 6px; font-family: sans-serif; fill: #000000; fill-opacity: 1.00; stroke: none;">Te</text></g></g></svg>
diff --git a/tests/data/compare/ezcGraphSvgDriverTest_testShortenStringManyWordsSplit.svg b/tests/data/compare/ezcGraphSvgDriverTest_testShortenStringManyWordsSplit.svg
new file mode 100644
index 0000000..28b0bf9
--- /dev/null
+++ b/tests/data/compare/ezcGraphSvgDriverTest_testShortenStringManyWordsSplit.svg
@@ -0,0 +1,2 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg" width="200" height="100" version="1.0" id="ezcGraph"><defs/><g id="ezcGraphChart" color-rendering="optimizeQuality" shape-rendering="geometricPrecision" text-rendering="optimizeLegibility"><g id="ezcGraphTextBox_1"><path d=" M 9.5000,17.0000 L 9.5000,9.5000 L 65.0600,9.5000 L 65.0600,17.0000 L 9.5000,17.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_2"/><text id="ezcGraphTextBox_1_text" x="10.0000" text-length="54.0600px" y="15.1000" style="font-size: 6px; font-family: sans-serif; fill: #000000; fill-opacity: 1.00; stroke: none;">foo bar foo bar..</text></g></g></svg>
diff --git a/tests/data/compare/ezcGraphSvgDriverTest_testShortenStringMoreChars.svg b/tests/data/compare/ezcGraphSvgDriverTest_testShortenStringMoreChars.svg
new file mode 100644
index 0000000..91b7aa6
--- /dev/null
+++ b/tests/data/compare/ezcGraphSvgDriverTest_testShortenStringMoreChars.svg
@@ -0,0 +1,2 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg" width="200" height="100" version="1.0" id="ezcGraph"><defs/><g id="ezcGraphChart" color-rendering="optimizeQuality" shape-rendering="geometricPrecision" text-rendering="optimizeLegibility"><g id="ezcGraphTextBox_1"><path d=" M 9.5000,17.0000 L 9.5000,9.5000 L 33.2600,9.5000 L 33.2600,17.0000 L 9.5000,17.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_2"/><text id="ezcGraphTextBox_1_text" x="10.0000" text-length="22.2600px" y="15.1000" style="font-size: 6px; font-family: sans-serif; fill: #000000; fill-opacity: 1.00; stroke: none;">Tests..</text></g></g></svg>
diff --git a/tests/data/compare/ezcGraphSvgDriverTest_testShortenStringWordSplit.svg b/tests/data/compare/ezcGraphSvgDriverTest_testShortenStringWordSplit.svg
new file mode 100644
index 0000000..1feb931
--- /dev/null
+++ b/tests/data/compare/ezcGraphSvgDriverTest_testShortenStringWordSplit.svg
@@ -0,0 +1,2 @@
+<?xml version="1.0"?>
+<svg xmlns="http://www.w3.org/2000/svg" width="200" height="100" version="1.0" id="ezcGraph"><defs/><g id="ezcGraphChart" color-rendering="optimizeQuality" shape-rendering="geometricPrecision" text-rendering="optimizeLegibility"><g id="ezcGraphTextBox_1"><path d=" M 9.5000,17.0000 L 9.5000,9.5000 L 49.1600,9.5000 L 49.1600,17.0000 L 9.5000,17.0000 z " style="fill: #ffffff; fill-opacity: 0.00; stroke: none;" id="ezcGraphPolygon_2"/><text id="ezcGraphTextBox_1_text" x="10.0000" text-length="38.1600px" y="15.1000" style="font-size: 6px; font-family: sans-serif; fill: #000000; fill-opacity: 1.00; stroke: none;">Teststring..</text></g></g></svg>
diff --git a/tests/driver_flash_test.php b/tests/driver_flash_test.php
index 409475f..d9b4287 100644
--- a/tests/driver_flash_test.php
+++ b/tests/driver_flash_test.php
@@ -1274,15 +1274,15 @@ class ezcGraphFlashDriverTest extends ezcGraphTestCase
 
     public function testDrawTooLongTextException()
     {
-        $filename = $this->tempDir . __FUNCTION__ . '.png';
+        $filename = $this->tempDir . __FUNCTION__ . '.swf';
 
         try
         {
             $this->driver->drawTextBox(
-                'This is very long text which is not supposed to fit in the bounding box.',
+                'Teststring foo',
                 new ezcGraphCoordinate( 10, 10 ),
-                50,
-                20,
+                1,
+                6,
                 ezcGraph::LEFT
             );
 
@@ -1296,6 +1296,26 @@ class ezcGraphFlashDriverTest extends ezcGraphTestCase
         $this->fail( 'Expected ezcGraphFontRenderingException.' );
     }
 
+    public function testShortenStringMoreChars()
+    {
+        $filename = $this->tempDir . __FUNCTION__ . '.swf';
+
+        $this->driver->drawTextBox(
+            'Teststring foo',
+            new ezcGraphCoordinate( 10, 10 ),
+            24,
+            6,
+            ezcGraph::LEFT
+        );
+
+        $this->driver->render( $filename );
+
+        $this->swfCompare( 
+            $filename,
+            $this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.swf'
+        );
+    }
+
     public function testDrawCircleRadialFill()
     {
         $filename = $this->tempDir . __FUNCTION__ . '.swf';
diff --git a/tests/driver_gd_test.php b/tests/driver_gd_test.php
index a11d38d..07690c0 100644
--- a/tests/driver_gd_test.php
+++ b/tests/driver_gd_test.php
@@ -1934,7 +1934,7 @@ class ezcGraphGdDriverTest extends ezcTestImageCase
             $this->driver->drawTextBox(
                 'This is very long text which is not supposed to fit in the bounding box.',
                 new ezcGraphCoordinate( 10, 10 ),
-                50,
+                1,
                 20,
                 ezcGraph::LEFT
             );
@@ -2225,6 +2225,28 @@ class ezcGraphGdDriverTest extends ezcTestImageCase
         );
     }
 
+    public function testShortenStringMoreChars()
+    {
+        $filename = $this->tempDir . __FUNCTION__ . '.png';
+
+        $this->driver->drawTextBox(
+            'Teststring foo',
+            new ezcGraphCoordinate( 10, 10 ),
+            24,
+            6,
+            ezcGraph::LEFT
+        );
+
+        $this->driver->render( $filename );
+
+        $this->assertImageSimilar( 
+            $filename,
+            $this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.png',
+            'Image does not look as expected.',
+            2000
+        );
+    }
+
     public function testDrawJpeg()
     {
         $filename = $this->tempDir . __FUNCTION__ . '.jpg';
diff --git a/tests/driver_options_test.php b/tests/driver_options_test.php
index 705ade6..e544648 100644
--- a/tests/driver_options_test.php
+++ b/tests/driver_options_test.php
@@ -171,6 +171,53 @@ class ezcGraphDriverOptionsTest extends ezcTestImageCase
         $this->fail( 'Expected ezcBaseValueException.' );
     }
 
+    public function testDriverOptionsPropertyAutoShortenString()
+    {
+        $options = new ezcGraphSvgDriverOptions();
+
+        $this->assertSame(
+            true,
+            $options->autoShortenString,
+            'Wrong default value for property autoShortenString in class ezcGraphDriverOptions'
+        );
+
+        $options->autoShortenString = false;
+        $this->assertSame(
+            false,
+            $options->autoShortenString,
+            'Setting property value did not work for property autoShortenString in class ezcGraphDriverOptions'
+        );
+
+        try
+        {
+            $options->autoShortenString = 42;
+        }
+        catch ( ezcBaseValueException $e )
+        {
+            return true;
+        }
+
+        $this->fail( 'Expected ezcBaseValueException.' );
+    }
+
+    public function testDriverOptionsPropertyAutoShortenStringPostFix()
+    {
+        $options = new ezcGraphSvgDriverOptions();
+
+        $this->assertSame(
+            '..',
+            $options->autoShortenStringPostFix,
+            'Wrong default value for property autoShortenStringPostFix in class ezcGraphDriverOptions'
+        );
+
+        $options->autoShortenStringPostFix = ' ...';
+        $this->assertSame(
+            ' ...',
+            $options->autoShortenStringPostFix,
+            'Setting property value did not work for property autoShortenStringPostFix in class ezcGraphDriverOptions'
+        );
+    }
+
     public function testPropertyNotFoundException()
     {
         $options = new ezcGraphSvgDriverOptions();
diff --git a/tests/driver_svg_test.php b/tests/driver_svg_test.php
index 67e0096..e9dffa8 100644
--- a/tests/driver_svg_test.php
+++ b/tests/driver_svg_test.php
@@ -1433,30 +1433,6 @@ class ezcGraphSvgDriverTest extends ezcGraphTestCase
         );
     }
 
-    public function testDrawTooLongTextException()
-    {
-        $filename = $this->tempDir . __FUNCTION__ . '.png';
-
-        try
-        {
-            $this->driver->drawTextBox(
-                'This is very long text which is not supposed to fit in the bounding box.',
-                new ezcGraphCoordinate( 10, 10 ),
-                50,
-                20,
-                ezcGraph::LEFT
-            );
-
-            $this->driver->render( $filename );
-        }
-        catch ( ezcGraphFontRenderingException $e )
-        {
-            return true;
-        }
-
-        $this->fail( 'Expected ezcGraphFontRenderingException.' );
-    }
-
     public function testSvgDriverOptionsPropertyAssumedNumericCharacterWidth()
     {
         $options = new ezcGraphSvgDriverOptions();
@@ -1816,5 +1792,129 @@ class ezcGraphSvgDriverTest extends ezcGraphTestCase
             $this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.svg'
         );
     }
+
+    public function testShortenStringFailure()
+    {
+        $filename = $this->tempDir . __FUNCTION__ . '.svg';
+
+        try
+        {
+            $this->driver->drawTextBox(
+                'Test string',
+                new ezcGraphCoordinate( 10, 10 ),
+                1,
+                6,
+                ezcGraph::LEFT
+            );
+
+            $this->driver->render( $filename );
+        }
+        catch ( ezcGraphFontRenderingException $e )
+        {
+            return true;
+        }
+
+        $this->fail( 'Expected ezcGraphFontRenderingException.' );
+    }
+
+    public function testShortenSingleChar()
+    {
+        $filename = $this->tempDir . __FUNCTION__ . '.svg';
+
+        $this->driver->drawTextBox(
+            'Teststring foo',
+            new ezcGraphCoordinate( 10, 10 ),
+            4,
+            6,
+            ezcGraph::LEFT
+        );
+
+        $this->driver->render( $filename );
+
+        $this->compare( 
+            $filename,
+            $this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.svg'
+        );
+    }
+
+    public function testShortenStringFewChars()
+    {
+        $filename = $this->tempDir . __FUNCTION__ . '.svg';
+
+        $this->driver->drawTextBox(
+            'Teststring foo',
+            new ezcGraphCoordinate( 10, 10 ),
+            8,
+            6,
+            ezcGraph::LEFT
+        );
+
+        $this->driver->render( $filename );
+
+        $this->compare( 
+            $filename,
+            $this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.svg'
+        );
+    }
+
+    public function testShortenStringMoreChars()
+    {
+        $filename = $this->tempDir . __FUNCTION__ . '.svg';
+
+        $this->driver->drawTextBox(
+            'Teststring foo',
+            new ezcGraphCoordinate( 10, 10 ),
+            24,
+            6,
+            ezcGraph::LEFT
+        );
+
+        $this->driver->render( $filename );
+
+        $this->compare( 
+            $filename,
+            $this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.svg'
+        );
+    }
+
+    public function testShortenStringWordSplit()
+    {
+        $filename = $this->tempDir . __FUNCTION__ . '.svg';
+
+        $this->driver->drawTextBox(
+            'Teststring foo',
+            new ezcGraphCoordinate( 10, 10 ),
+            40,
+            6,
+            ezcGraph::LEFT
+        );
+
+        $this->driver->render( $filename );
+
+        $this->compare( 
+            $filename,
+            $this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.svg'
+        );
+    }
+
+    public function testShortenStringManyWordsSplit()
+    {
+        $filename = $this->tempDir . __FUNCTION__ . '.svg';
+
+        $this->driver->drawTextBox(
+            'foo bar foo bar foo bar foo bar',
+            new ezcGraphCoordinate( 10, 10 ),
+            60,
+            6,
+            ezcGraph::LEFT
+        );
+
+        $this->driver->render( $filename );
+
+        $this->compare( 
+            $filename,
+            $this->basePath . 'compare/' . __CLASS__ . '_' . __FUNCTION__ . '.svg'
+        );
+    }
 }
 ?>