[FLEX-35047] DataGrid MouseOver issue when scaled

• Type: Bug
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: Apache Flex 4.14.1
• Component/s: Advanced Data Grid, Spark: DataGrid
• Labels: DataGrid GridColumnHeaderView GridView MouseOver containsMouseEvent
• Assignee: Unassigned
• Reporter: Jan F. Weber
• Created: 11/Mar/16 08:05
• Updated: 11/Mar/16 08:05

Description

Setting scaleX and/or scaleY on a spark DataGrid does not handle mouse over events correctly.

This is issue is related to the functions "containsMouseEvent" located in class GridView.as and GridColumnHeaderView.as.

These functions do state:

/**

• True if this GridColumnHeaderView's bounds contain the event.
  *
• Currently this method does not account for the possibility that this GridColumnHeaderView has been
• rotated or scaled.
  */

/**

• True if this GridView's bounds contain the event.
  *
• Currently this method does not account for the possibility that this GridView has been
• rotated or scaled.
  */

A possible fix (as suggested by user "y-tanaka") would be the following modification to these functions:

public function containsMouseEvent(event:MouseEvent):Boolean

{ const eventStageX:Number = event.stageX; const eventStageY:Number = event.stageY; const origin:Point = localToGlobal(zeroPoint); // origin.x += horizontalScrollPosition; // if (layoutDirection == LayoutDirection.RTL) // origin.x -= width; // // origin.y += verticalScrollPosition; // // return (eventStageX >= origin.x) && (eventStageY >= origin.y) && // (eventStageX < (origin.x + width)) && (eventStageY < (origin.y + height)); return hitTestPoint(eventStageX, eventStageY, true); }