#013634: Make Offset of ezcGraphAxisRotatedLabelRenderer optional

When using the ezcGraphAxisRotatedLabelRenderer an angle such 45, an offset is calculated and Data as well as the labels will be moved to the right to accommodate the rotated label size. This however causes an ugly (large) space between the Y Axis line and the start of the Data.

If the Offset is disabled, the Label would enter into the Y Axis Space. I think however that this is acceptable (as well as desirable) in certain situations, hence i request that the offset calculation be made optional.

The following code modification of the axis_label_rotated.php would add an additional property called 'allowOffset' that would allow the above to be controlled:

renderer/axis_label_rotated.php
===================================================================
renderer/axis_label_rotated.php    (base)
renderer/axis_label_rotated.php    (suggestion)
@@ -70,6 +70,7 @@
     {
         parent::__construct( $options );
         $this->properties['angle'] = null;
+        $this->properties['allowOffset'] = true;
     }
 
     /**
@@ -97,6 +98,9 @@
                 $reducement = (int) ( $propertyValue - $propertyValue % 360 );
                 $this->properties['angle'] = (float) $propertyValue - $reducement;
                 break;
+            case 'allowOffset':
+                $this->properties['allowOffset'] = ($propertyValue?true:false);
+                break;
             default:
                 return parent::__set( $propertyName, $propertyValue );
         }
@@ -193,10 +197,13 @@
             $degTextAngle += 360.;
         }
 
-        $this->offset =
-            ( $this->angle < 0 ? -1 : 1 ) *
-            ( $axis->position & ( ezcGraph::TOP | ezcGraph::LEFT ) ? 1 : -1 ) *
-            ( 1 - cos( deg2rad( $this->angle * 2 ) ) );
+        if($this->properties['allowOffset'])
+        {
+            $this->offset =
+                ( $this->angle < 0 ? -1 : 1 ) *
+                ( $axis->position & ( ezcGraph::TOP | ezcGraph::LEFT ) ? 1 : -1 ) *
+                ( 1 - cos( deg2rad( $this->angle * 2 ) ) );
+        }
 
         $axisSpaceFactor = abs(
             ( $this->direction->x == 0 ? 0 :

Operating System: All
PHP Version: All
Database and version:
Browser (and version): All

Create a Line Graph with a RotatedLabelRenderer, set the Angle to 45. A Large Gap is created between the y Axis Line and the start of the first data point.