New Post: Prototype Lexer/Highlighter Available

I'm using a Modified for of PwerLexer converted to VB

Dragging the Virtical Scroll Bar Freezes the Application till it catches up... Arrow Keys,MouseWheel and Scroll Buttons are smooth scrolling.

Is there any way To Fix the Scroll Drag so its smoother?

Imports System.Text
Imports System.Drawing
Imports System.Text.RegularExpressions
Imports ScintillaNET
Imports DSeX.ConfigStructs
Public Class PwrLexer

    Private Shared Lock As Boolean = False
    ' Origional Thread for this class
    'http://scintillanet.codeplex.com/discussions/42949
    Private Const ST_DEFAULT As Integer = 32
    Private Const ST_STRING_VAR As Integer = 11
    Private Const ST_NUM_VAR As Integer = 12
    Private Const ST_STRING As Integer = 13
    Private Const ST_ID As Integer = 14
    Private Const ST_NUMBER As Integer = 15
    Private Const ST_COMMENT As Integer = 16
    Private Const ST_HEADER As Integer = 17

    Private Shared HEADER As String = KeysIni.GetKeyValue("MS-General", "Header")
    Private Shared RegWhiteSpace As New Regex("^\s+") '\s+
    Private Shared RegStrVar As New Regex("^~([A-Za-z0-9_]+)", RegexOptions.IgnoreCase)
    Private Shared RegNumVar As New Regex("^%([A-Za-z0-9_]+)", RegexOptions.IgnoreCase)
    Private Shared RegString As New Regex("^\{(.*?)\}")
    Private Shared RegLineID As New Regex("^\(([0-9]*)\:([0-9]*)\)")
    Private Shared RegNumber As New Regex("^([0-9#]+)")
    Private Shared RegHeader As New Regex("^(" + HEADER + ")", RegexOptions.IgnoreCase)

    Public Shared Sub Init(scintilla As Scintilla)
        scintilla.Indentation.SmartIndentType = SmartIndent.None
        scintilla.ConfigurationManager.Language = [String].Empty
        scintilla.Lexing.LexerName = "container"
        scintilla.Lexing.Lexer = Lexer.Container

        scintilla.Styles(ST_DEFAULT).ForeColor = Color.Black
        scintilla.Styles(ST_STRING_VAR).ForeColor = EditSettings.StringVariableColor
        scintilla.Styles(ST_NUM_VAR).ForeColor = EditSettings.VariableColor
        scintilla.Styles(ST_STRING).ForeColor = EditSettings.StringColor
        scintilla.Styles(ST_COMMENT).ForeColor = EditSettings.CommentColor
        scintilla.Styles(ST_ID).ForeColor = EditSettings.IDColor
        scintilla.Styles(ST_NUMBER).ForeColor = EditSettings.NumberColor
        scintilla.Styles(ST_HEADER).ForeColor = Color.Green
        scintilla.Styles(ST_HEADER).Bold = True
    End Sub

    Public Shared Sub StyleNeeded(ByRef scintilla As Scintilla, ByRef range As Range)

        Dim start As Integer = range.StartingLine.StartPosition
        Dim [end] As Integer = start
        Dim max As Integer = scintilla.Lines(scintilla.Lines.Count - 1).StartPosition + scintilla.Lines(scintilla.Lines.Count - 1).Length
        Debug.Print("StyleNeededEventArgs()")
        'we'll get the whole update range at once
        'we also get the maximum editor range, incase a new comment goes to the end of the file
        'Dim curr As Line = range.StartingLine
        'While curr.Number <= range.EndingLine.Number
        '    [end] += curr.Length
        '    curr = curr.[Next]
        'End While
        Dim test As String = range.Text
        [end] += test.Length
        StyleSection(scintilla, start, [end], max, test)

    End Sub

    Public Shared Sub StyleSection(ByRef scintilla As Scintilla, ByRef start As Integer, ByRef [end] As Integer, ByRef max As Integer, ByRef Txt As String)
        Dim pos As Integer = start
        Dim i As Integer = 0
        While pos < [end]

            Dim curr As String = scintilla.GetRange(pos, [end]).Text

            'make a couple of direct checks for special handling (comments/string literals) pass the rest to a RegEx handler
            'If (curr.Length > 1)' AndAlso (curr(0) = "*"c) Then
            ' pos += StyleCommentSingle(scintilla, pos, [end], max)
            If RegHeader.IsMatch(curr) Then
                pos += StyleRegExWhole(scintilla, curr, RegHeader, ST_HEADER, pos, [end], max)

                'ElseIf (curr(0) = "{"c) Then
                '    pos += StyleString(scintilla, curr, pos, [end], max)

                'ElseIf RegStrVar.IsMatch(curr) Then
                '    pos += StyleRegExWhole(scintilla, curr, RegStrVar, ST_STRING_VAR, pos, [end], max)

                'ElseIf RegNumVar.IsMatch(curr) Then
                '    pos += StyleRegExWhole(scintilla, curr, RegNumVar, ST_NUM_VAR, pos, [end], max)

                'ElseIf RegLineID.IsMatch(curr) Then
                '    pos += StyleRegExWhole(scintilla, curr, RegLineID, ST_ID, pos, [end], max)

                'ElseIf RegNumber.IsMatch(curr) Then
                '    pos += StyleRegExWhole(scintilla, curr, RegNumber, ST_NUMBER, pos, [end], max)

                'ElseIf RegWhiteSpace.IsMatch(curr) Then
                '    pos += StyleRegExWhole(scintilla, curr, RegWhiteSpace, ST_DEFAULT, pos, [end], max)
            Else

                Select Case curr(0)
                    'Case vbLf
                    '    pos += 1
                    'Case vbCr
                    '    pos += 1
                    Case "*"c
                        i = StyleCommentSingle(scintilla, pos, [end], max)
                    Case "("c
                        i = StyleRegExWhole(scintilla, curr, RegLineID, ST_ID, pos, [end], max)

                    Case "%"c
                        i = StyleRegExWhole(scintilla, curr, RegNumVar, ST_STRING_VAR, pos, [end], max)

                    Case "0"c To "9"c
                        i = StyleRegExWhole(scintilla, curr, RegNumber, ST_NUMBER, pos, [end], max)
                    Case "{"c
                        i = StyleString(scintilla, curr, pos, [end], max)
                    Case "~"c
                        i = StyleRegExWhole(scintilla, curr, RegStrVar, ST_STRING_VAR, pos, [end], max)

                    Case Else
                        i = 0
                End Select
                If i = 0 Then
                    DirectCast(scintilla, INativeScintilla).StartStyling(pos, &H1F)
                    DirectCast(scintilla, INativeScintilla).SetStyling(1, ST_DEFAULT)
                    pos += 1
                Else
                    pos += i
                End If
            End If
        End While
    End Sub

    Public Shared Function StyleHeader(ByRef scintilla As Scintilla, ByRef start As Integer, ByRef [end] As Integer, ByRef max As Integer) As Integer
        Dim full As String = scintilla.GetRange(start, max).Text.ToUpper()
        Dim offset As Integer = 0
        While (full(offset) <> ControlChars.Cr) AndAlso (full(offset) <> ControlChars.Lf) AndAlso (start + offset < max)
            offset += 1
        End While
        DirectCast(scintilla, INativeScintilla).StartStyling(start, &H1F)
        DirectCast(scintilla, INativeScintilla).SetStyling(offset, ST_HEADER)
        Return offset
    End Function
    Public Shared Function StyleCommentSingle(ByRef scintilla As Scintilla, ByRef start As Integer, ByRef [end] As Integer, ByRef max As Integer) As Integer
        Dim full As String = scintilla.GetRange(start, max).Text.ToUpper()
        Dim offset As Integer = 0
        While (full(offset) <> ControlChars.Cr) AndAlso (full(offset) <> ControlChars.Lf) AndAlso (start + offset < max - 1)
            offset += 1
        End While
        DirectCast(scintilla, INativeScintilla).StartStyling(start, &H1F)
        DirectCast(scintilla, INativeScintilla).SetStyling(offset, ST_COMMENT)
        Return offset
    End Function

    Public Shared Function StyleString(ByRef scintilla As Scintilla, ByRef text As String, ByRef start As Integer, ByRef [end] As Integer, ByRef max As Integer) As Integer
        Dim full As String = scintilla.GetRange(start, max).Text.ToUpper()
        Dim offset As Integer = 1
        While (full(offset) <> ControlChars.Cr) AndAlso (full(offset) <> ControlChars.Lf) AndAlso (full(offset) <> "}"c) AndAlso (start + offset < max - 1)
            offset += 1
        End While
        offset += 1
        DirectCast(scintilla, INativeScintilla).StartStyling(start, &H1F)
        DirectCast(scintilla, INativeScintilla).SetStyling(offset, ST_STRING)
        Return offset
    End Function

    Public Shared Function StyleRegExWhole(ByRef scintilla As Scintilla, ByRef text As String, ByRef reg As Regex, ByRef style As Integer, ByRef start As Integer, ByRef [end] As Integer, _
     ByRef max As Integer) As Integer
        'match & style an entire regex
        Dim match As String = reg.Match(text).Value
        DirectCast(scintilla, INativeScintilla).StartStyling(start, &H1F)
        DirectCast(scintilla, INativeScintilla).SetStyling(match.Length, style)
        Return match.Length
    End Function

    Private Shared Function InlineAssignHelper(Of T)(ByRef target As T, value As T) As T
        target = value
        Return value
    End Function
End Class