Archived:JSR-226 - SVGLocatableElement.getBBox() returns wrong value when a transformation is applied for the inner elements (Known Issue)

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Compatibility

Platform(s): S60 3rd Edition, FP1 MIDP SDK

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Article

Created: User:Technical writer 1 (14 Sep 2007)

Last edited: hamishwillee (28 Jun 2012)

Overview

When using the Scalable 2D Vector Graphics API, the method SVGLocatableElement.getBBox() returns a wrong value when a transformation is applied. The bounding box for an element is in that element's user space, which does not take the transformation of the element into account.

Description

The correct value for the group’s bounding box is the one that does not take the transformation of inner elements into account.

How to reproduce

This issue affects JSR-226 when running on the emulator.

  <g id="group1" transform="translate(10, 20)" fill="red" > 
   <rect id="rect1" transform="scale(2)" x="10" y="10" width="50" height="50"/> 
   <rect id="rect2" x="10" y="10" width="100" height="100"/> 
   <g id="group2" transform="translate(10, 20)" > 
     <rect id="rect3" x="0" y="10" width="150" height="50"/> 
     <circle id="circle1" cx="20" cy="20" r="100" /> 
   </g> 
  </g>

  SVGLocatableElement group1Elem = (SVGLocatableElement)
           svgImage.getDocument().getElementById(group1);
 
  SVGRect group1BBox = group1Elem.getBBox();
 
  group1BBox = [-80, -80, 230, 200]
  The correct value is: [-70, -60, 230, 200]

Solution

This issue is fixed in S60 3rd Edition, FP2 MIDP SDK.