I was wondering if someone would like to partner up with me to get this code optimized and working properly that understnads this code just by looking at it. What it does is it colors a Perl script in a richtextbox when its opened as well as when they type. Its not working all that great right now becuase I've had to chnage a large amount of my own code to get it to color perl correctly. Its extremly slow as well as sluggish and I need to know if theres a better way to do this..
Code:Public Keywords As String
Public Declare Function LockWindowUpdate Lib "user32" (ByVal hwndLock As Long) As Long
Public Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long
Public Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long
Public Declare Function SendMessageByNum Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Long) As Long
Public Declare Function SelectObject Lib "gdi32" (ByVal hdc As Long, ByVal hObject As Long) As Long
Public Declare Function GetTextMetrics Lib "gdi32" Alias "GetTextMetricsA" (ByVal hdc As Long, lpMetrics As TEXTMETRIC) As Long
Public Declare Function ReleaseDC Lib "user32" (ByVal hwnd As Long, ByVal hdc As Long) As Long
'// Win API Const
Private Const EM_GETFIRSTVISIBLELINE = &HCE
Private Const EM_LINEINDEX = &HBB
Private Const EM_GETRECT = &HB2
Private Const WM_GETFONT = &H31
'// Variables
'//Variables for FirstVisible/LastVisibles
Dim FirstVisibleLine As Long
Dim LastVisibleLine As Long
Private Type RECT
Left As Long
Top As Long
Right As Long
Bottom As Long
End Type
Private Type TEXTMETRIC
tmHeight As Long
tmAscent As Long
tmDescent As Long
tmInternalLeading As Long
tmExternalLeading As Long
tmAveCharWidth As Long
tmMaxCharWidth As Long
tmWeight As Long
tmOverhang As Long
tmDigitizedAspectX As Long
tmDigitizedAspectY As Long
tmFirstChar As Byte
tmLastChar As Byte
tmDefaultChar As Byte
tmBreakChar As Byte
tmItalic As Byte
tmUnderlined As Byte
tmStruckOut As Byte
tmPitchAndFamily As Byte
tmCharSet As Byte
End Type
Public Sub Colorize(RTFBox As RichTextBox, CommentColor As Long, ScriptColor As Long, StringColor As Long, Optional All As Boolean = False)
Dim lTextSelPos As Long, lTextSelLen As Long
'// Save the cursor position
lTextSelPos = RTFBox.SelStart
lTextSelLen = RTFBox.SelLength
'// Lock the WindowUpdate of the ReichTextBox
LockWindowUpdate RTFBox.hwnd
' On Error GoTo ErrHandler
Dim i As Long
Dim sBuffer As String, lBufferLen As Long
Dim lSelPos As Long, lSelLen As Long
Dim sTempBuffer As String
Dim sSearchChar As String, lSearchCharLen As Long
Dim SelectColor As Long
With RTFBox
sBuffer = .Text & " "
lBufferLen = Len(sBuffer)
.SelColor = vbBlack
If All = True Then
.SelStart = 1
End If
For i = FirstVisibleChar(RTFBox, All) To LastVisibleChar(RTFBox, lBufferLen, All)
Select Case Asc(Mid(sBuffer, i, 1))
Case 34 'Umm stuff in " "
If InStr(i + 1, sBuffer, """", 1) > 0 Then
.SelStart = i - 1
i = InStr(i + 1, sBuffer, """", 1)
.SelLength = i - .SelStart
.SelColor = vbBlack
Else
.SelColor = vbBlack
End If
Case 39
If InStr(i + 1, sBuffer, "'", 1) > 0 Then
.SelStart = i - 1
i = InStr(i + 1, sBuffer, "'", 1) 'stuff in ' '
.SelLength = i - .SelStart
.SelColor = vbBlack
Else
.SelColor = vbBlack
End If
Case 47, 39, 60, 35
If Mid(sBuffer, i, 2) = "/*" Then '// C++ Comment
sSearchChar = "*/"
lSearchCharLen = 2
SelectColor = CommentColor
ElseIf Mid(sBuffer, i, 2) = "//" Then
If Mid(sBuffer, i - 1, 3) = "://" Then
SelectColor = vbBlack
Else
sSearchChar = vbCrLf
lSearchCharLen = 0
SelectColor = CommentColor
End If
ElseIf Mid(sBuffer, i, 4) = "<!--" Then '// HTML Comment
sSearchChar = "-->"
lSearchCharLen = 3
SelectColor = CommentColor
' ElseIf Mid(sBuffer, i, 1) = "<" Then '//HTML
' sSearchChar = ">"
' lSearchCharLen = 1
' SelectColor = StringColor
ElseIf Mid(sBuffer, i, 1) = "#" Then '//Perl Comment
sSearchChar = vbCrLf
lSearchCharLen = 0
'//All the extra below just makes sure the comment is not on the same line
'as the code is because of html in the script...
Dim Buffer As Variant
If InStrRev(sBuffer, vbCrLf, i) > 0 Then
Buffer = Right(sBuffer, Len(sBuffer) - InStrRev(sBuffer, vbCrLf, i))
Buffer = Left(Buffer, InStr(Buffer, vbCrLf))
If Not Buffer = "" Then Buffer = Left(Buffer, InStr(Buffer, "#") - 1)
End If
If Buffer = "" Or InStr(LCase(Buffer), "color:") = 0 And InStr(LCase(Buffer), "color=") = 0 _
And InStr(LCase(Buffer), "alink=") = 0 And InStr(LCase(Buffer), "vlink=") = 0 _
And InStr(LCase(Buffer), "link=") = 0 And InStr(LCase(Right(Buffer, 2)), """") = 0 Then
If i = 1 Then
SelectColor = &H800080
Else
SelectColor = CommentColor
End If
Else
SelectColor = vbBlack
End If
Else '// None
GoTo ExitComment
End If
'// Kill TempBuffer
sTempBuffer = ""
'// Colorize the comment string
.SelStart = i - 1
lSelLen = InStr(i, sBuffer, sSearchChar) + lSearchCharLen
If lSelLen <> lSearchCharLen Then '// FileEnd ?
lSelLen = lSelLen - i
Else
lSelLen = lBufferLen - i
End If
.SelLength = lSelLen
.SelColor = SelectColor
i = .SelStart + .SelLength
ExitComment:
'--------------------Color Script
Case 97 To 122, 65 To 90, 35, 92
'// a to z , A to Z , # , \
If sTempBuffer = "" Then lSelPos = i
sTempBuffer = sTempBuffer & Mid(sBuffer, i, 1)
Case Else
If Trim(sTempBuffer) <> "" Then
If InStr(1, Keywords, "|" & sTempBuffer & "|", 1) <> 0 Then
.SelStart = lSelPos - 1
.SelLength = Len(sTempBuffer)
.SelColor = ScriptColor
End If
End If
sTempBuffer = ""
End Select
Next
End With
ErrHandler:
'// Set the Cursor to the old position
RTFBox.SelStart = lTextSelPos
RTFBox.SelLength = lTextSelLen
If All = True Then
'frmMain.StatusBar.Panels(1).Text = "Scanning Complete!"
End If
'// Unlock the WindoUpdate-Lock
LockWindowUpdate 0
End Sub
Private Function FirstVisibleChar(RTFBox As RichTextBox, Optional All As Boolean = False) As Long
FirstVisibleLine = SendMessage(RTFBox.hwnd, EM_GETFIRSTVISIBLELINE, 0, 0&)
FirstVisibleChar = SendMessageByNum(RTFBox.hwnd, EM_LINEINDEX, FirstVisibleLine, 0&)
If FirstVisibleChar = 0 Then FirstVisibleChar = 1
End Function
Private Function LastVisibleChar(RTFBox As RichTextBox, LenFile As Long, All As Boolean) As Long
Dim rc As RECT
Dim tm As TEXTMETRIC
Dim hdc As Long
Dim lFont As Long
Dim OldFont As Long
Dim di As Long
Dim lc As Long
Dim VisibleLines As Long
lc = SendMessage(RTFBox.hwnd, EM_GETRECT, 0, rc)
lFont = SendMessage(RTFBox.hwnd, WM_GETFONT, 0, 0)
hdc = GetDC(RTFBox.hwnd)
If lFont <> 0 Then OldFont = SelectObject(hdc, lFont)
di = GetTextMetrics(hdc, tm)
If lFont <> 0 Then lFont = SelectObject(hdc, OldFont)
If All = True Then
VisibleLines = Len(RTFBox.Text)
Else
VisibleLines = (rc.Bottom - rc.Top) / tm.tmHeight + 50
End If
di = ReleaseDC(RTFBox.hwnd, hdc)
LastVisibleLine = SendMessage(RTFBox.hwnd, EM_GETFIRSTVISIBLELINE, 0, 0&)
LastVisibleLine = LastVisibleLine + VisibleLines
LastVisibleChar = SendMessageByNum(RTFBox.hwnd, EM_LINEINDEX, LastVisibleLine, 0&)
If LastVisibleChar = -1 Or LastVisibleChar = 0 Then LastVisibleChar = LenFile
End Function
