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How to convert offset values into text range in the WinForms SyntaxEditor (EditControl)?
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Convert offset values into text range
In other words, this article explains how to get the associated CoordinatePoint values from text offset values. You would have to convert offset values into VirtualPoints and then VirtualPoints to ParsePoints before converting them to CoordinatePoints. Please refer to the code snippets below that illustrate this.
C#
// Starting offset converted to virtual point Point startVirtualPoint = this.editControl1.ConvertOffsetToVirtualPosition(startOffsetValue); // Ending offset converted to virtual point Point endVirtualPoint = this.editControl1.ConvertOffsetToVirtualPosition(endOffsetValue); // Converting the VirtualPoints to ParsePoints ParsePoint startParsePoint = new ParsePoint(startVirtualPoint.Y, startVirtualPoint.X, 0); ParsePoint endParsePoint = new ParsePoint(endVirtualPoint.Y, endVirtualPoint.X, 0); // Creating the associated CoordinatePoints that indicate the text range CoordinatePoint startCoordinatePoint = new CoordinatePoint(this.editControl1.Parser as ILexemParser, startParsePoint, startVirtualPoint.Y, startVirtualPoint.X, true); CoordinatePoint endCoordinatePoint = new CoordinatePoint(this.editControl1.Parser as ILexemParser, endParsePoint, endVirtualPoint.Y, endVirtualPoint.X, true);
VB
' Starting offset converted to virtual point Dim startVirtualPoint As Point = Me.editControl1.ConvertOffsetToVirtualPosition(startOffsetValue) ' Ending offset converted to virtual point Dim endVirtualPoint As Point = Me.editControl1.ConvertOffsetToVirtualPosition(endOffsetValue) ' Converting the VirtualPoints to ParsePoints Dim startParsePoint As New ParsePoint(startVirtualPoint.Y, startVirtualPoint.X, 0) Dim endParsePoint As New ParsePoint(endVirtualPoint.Y, endVirtualPoint.X, 0) ' Creating the associated CoordinatePoints that indicate the text range Dim startCoordinatePoint As New CoordinatePoint(CType(Me.editControl1.Parser, ILexemParser), startParsePoint, startVirtualPoint.Y, startVirtualPoint.X, True) Dim endCoordinatePoint As New CoordinatePoint(CType(Me.editControl1.Parser, ILexemParser), endParsePoint, endVirtualPoint.Y, endVirtualPoint.X, True)
