Edit control line tracking sidebar

[therks 16]

Okay, so I've got this editor application and I wanted a line tracking column like Scite has. I've clipped this repro from the full application:

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#include <GUIConstants.au3>
#include <WindowsConstants.au3>
#include <GUIEdit.au3>

Global Const $EDIT_MAX_LIMIT = 2^31-1 ; 0x7fffffff, 2147483647
Global $sLineCount = ''
For $i = 1 to 2000
    $sLineCount &= $i & @CRLF
Next

$hGUI = GUICreate('', 400, 300, Default, Default, $WS_OVERLAPPEDWINDOW)
$ed_Lines = GUICtrlCreateEdit('1', 0, 0, 50, 300, BitOR($ES_READONLY, $ES_RIGHT))
    GUICtrlSetResizing(-1, BitXOR($GUI_DOCKBORDERS, $GUI_DOCKRIGHT, $GUI_DOCKWIDTH))
    _GUICtrlEdit_SetLimitText($ed_Lines, $EDIT_MAX_LIMIT)
$ed_Content = GUICtrlCreateEdit('Hello!', 50, 0, 350, 300)
    GUICtrlSetResizing(-1, $GUI_DOCKBORDERS)
    _GUICtrlEdit_SetLimitText($ed_Content, $EDIT_MAX_LIMIT)
GUISetState()

GUIRegisterMsg($WM_CTLCOLOREDIT, 'WM_CTLCOLOREDIT')

While 1
    $gm = GUIGetMsg()
    Switch $gm
        Case $GUI_EVENT_CLOSE
            ExitLoop
    EndSwitch
WEnd


Func WM_CTLCOLOREDIT($hWnd, $iMsg, $iWParam, $iLParam)
    If $iLParam = GUICtrlGetHandle($ed_Content) Then
        _GUICtrlEdit_BeginUpdate($ed_Lines)

        If Not IsDeclared('STATIC___iLineCountMem') Then Global $STATIC___iLineCountMem = -1
        Local $iLineCount = _GUICtrlEdit_GetLineCount($ed_Content)
        If $iLineCount <> $STATIC___iLineCountMem then
            Local $iCutOff = StringInStr($sLineCount, @CRLF, 0, $iLineCount)
            If $iCutOff = 0 Then
                Global $sLineCount = ''
                For $i = 1 to $iLineCount + 100
                    $sLineCount &= $i & @CRLF
                Next
                $iCutOff = StringInStr($sLineCount, @CRLF, 0, $iLineCount)
            EndIf

            GUICtrlSetData($ed_Lines, StringLeft($sLineCount, $iCutOff+1))
            $STATIC___iLineCountMem = $iLineCount
        EndIf

        If Not IsDeclared('STATIC___iLineVisMem') Then Global $STATIC___iLineVisMem = -1
        Local $iLineVis = _GUICtrlEdit_GetFirstVisibleLine($ed_Content)
        If $iLineVis <> $STATIC___iLineVisMem Then
            _GUICtrlEdit_LineScroll($ed_Lines, 0, -$iLineCount)
            _GUICtrlEdit_LineScroll($ed_Lines, 0, $iLineVis)
        EndIf
        _GUICtrlEdit_EndUpdate($ed_Lines)
    EndIf
    Return $GUI_RUNDEFMSG
EndFunc

Now it works, and it works pretty good, but in instances where I paste a large amount of text in, it's rather slow to respond. A 1000 line script I have for instance takes almost 3 seconds before it appears, also resizing and scrolling when there's lots of text is choppy as well.

I'm hoping someone with better GUI knowledge than I (which shouldn't be hard) will weigh in here with some advice on ways I could make this run faster. Maybe a better strategy for filling the lines column? Maybe even a better message to hook into. I'm not sure WM_CTLCOLOREDIT is the best, but it triggers whenever the edit is scrolled, resized, or changed so it fit my purpose.

Thanks for reading.

*Edit: Edited the title, it was too long.

Edited April 21, 2010 by therks

[PsaltyDS 28]

I can't reproduce the problem. I pasted multiple copies of your code into the running editor until there was over 1000 lines, then cut and pasted it in/out a few times and the update was near instantaneous every time. This is a pretty beefy box (AutoIt 3.3.6.1, Vista Busi 32bit, on Q8300 quad 2.5GHz, 4GB) and I'm sure that helps.

What are you running it on?

[therks 16]

WinXP Pro, 2.31GHz, 2GB RAM. I just updated to AutoIt 3.3.6.1 (was running the latest Beta, I always forget to check the release version to see what's newer haha) and still runs the same way. Thanks for checking it out though Psalty, glad it works well for you.

Any ideas that can increase performance anyway? Or does everything already seem up to snuff?