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FbTk.bi 'Eine erweiterbare GUI-Engine

Uploader:MitgliedOneCypher
Datum/Zeit:22.10.2008 01:10:02

'FbTk.bi
'Copyright Christian H. 2008
'Dieser Quelltext darf frei weitergegeben oder verändert werden.

Namespace fbtk

    sub dummysub(tmp as any ptr)
    end sub

    'Hiermit kann jede UDT zu einem Toolkit-Objekt werden
    type _tko
        x as integer    'X-Position
        y as integer    'Y-Position
        w as integer    'Breite des Objekts
        h as integer    'Höhe des Objekts
        v as ubyte      'Sichtbar (<>0) = True
        OnClick as sub(tko as any ptr) = @dummysub
        OnMouseDown as sub (tko as any ptr) = @dummysub
        'OnDblClick as sub(tko as any ptr) = @dummysub  'Doppelklick muss erst noch implementiert werden
        PreClick as sub(tko as any ptr) = @dummysub     'Wird ausgeführt bevor OnClick ausgeführt wird
        'PreDblClick as sub(tko as any ptr) = @dummysub 'Doppelklick muss erst noch implementiert werden
        RePaint as sub(tko as any ptr) = @dummysub
    end type

    'Hier werden alle Steuerelemente/Objekte verkettet
    type tko_list
        tko as any ptr
        nx_tko as tko_list ptr
    end type

    dim shared first_tko as tko_list ptr                'Erstes Steuerelement
    dim shared last_tko as tko_list ptr                 'Letztes Steuerelement
    dim shared termsign as ubyte                        'DoEvents beenden

    'Eine Hilfsfunktion zum registrieren von Objekten in die Verkettung
    Function NewTko(tkoptr as any ptr) as any ptr
        if first_tko = 0 then
            first_tko = new tko_list
            first_tko->tko = tkoptr
            last_tko = first_tko
        else
            last_tko->nx_tko = new tko_list
            last_tko = last_tko->nx_tko
            last_tko->tko = tkoptr
        end if
        return tkoptr
    end function

    'Verbindet eine Sub mit einem Event eines Steuerelementes
    Sub OnClick(tko as any ptr, EventSub as sub)
        dim tmp as _tko ptr = tko
        tmp->OnClick = EventSub
    end sub

    Sub OnMouseDown(tko as any ptr, EventSub as sub)
        dim tmp as _tko ptr = tko
        tmp->OnMouseDown = EventSub
    end sub

    'Hier ein integriertes Objekte:

    'Label
    type _label
        tko as _tko             'Es ist ein Toolkit-Objekt
        caption as string       'Labeltext
        rgbcolor as uinteger    'Farbe
        style as ubyte          'Stil (0=normal, 1=umrandet, 2=unterstrichen, 3=umrandet und unterstrichen
    end type

    'Übernimmt das neuzeichnen des Labels
    Sub LabelRepaint(label as _label ptr)
        dim x as integer = label->tko.x
        dim y as integer = label->tko.y
        dim t as string = label->caption
        dim c as uinteger = label->rgbcolor
        select case label->style
        case 0
            draw string (x,y), t, c

        case 1
            draw string (x-1,y), t, c
            draw string (x+1,y), t, c
            draw string (x,y-1), t, c
            draw string (x,y+1), t, c
            draw string (x,y), t, RGB(255,255,255)

        case 2
            draw string (x,y), t, c
            line (x,y+15)-(x+8 * len(t),y+15),RGB(0,0,0)
        case 3

            draw string (x-1,y), t, c
            draw string (x+1,y), t, c
            draw string (x,y-1), t, c
            draw string (x,y+1), t, c
            draw string (x,y), t, RGB(255,255,255)
            line (x,y+15)-(x+8 * len(t),y+15),c
        end select
    end sub

    'Hiermit kann man ein Label hinzufügen
    function AddLabel(x as integer,y as integer, caption as string) as _label ptr
        dim tmp_label as _label ptr = NewTko(new _label)
        tmp_label->tko.x = x
        tmp_label->tko.y = y
        tmp_label->tko.h = 16
        tmp_label->tko.w = 8 * len(caption)
        tmp_label->tko.RePaint = @LabelRepaint
        tmp_label->caption = caption
        return tmp_label
    end function

    'Objekt Ende

    sub ShowSelected(tko as _tko ptr)
        dim x as integer = tko->x-3
        dim y as integer = tko->y-3
        dim x2 as integer = tko->x + tko->w+3
        dim y2 as integer = tko->y + tko->h+3
        line(x,y)-(x2,y),RGB(0,0,0),,21845
        line(x,y)-(x,y2),RGB(0,0,0),,21845
        line(x2,y)-(x2,y2),RGB(0,0,0),,21845
        line(x,y2)-(x2,y2),RGB(0,0,0),,21845
    end sub


    Function DoEvents as ubyte
        dim actual_tko as tko_list ptr = first_tko
        dim mx as integer, my as integer, btn as integer
        dim tko as _tko ptr, in as string
        dim selected as tko_list ptr
        screenlock
        line(0,0)-(800,600),RGB(255,255,255),BF
        while actual_tko <> 0
            in = inkey
            getmouse mx,my, ,btn
            tko = actual_tko->tko
            tko->repaint(actual_tko->tko)

            if in = chr(9) then
                if selected = 0 then
                    selected = first_tko
                else
                    if selected->nx_tko = 0 then
                        selected = first_tko
                    else
                        selected = selected->nx_tko
                    end if
                end if
            end if

            if in = CHR(13) and selected <> 0 then
                pcopy 1,0
                tko = selected->tko
                tko->PreClick(selected->tko)
                screenunlock
                do
                    sleep 50
                    in = inkey
                loop until in <> chr(13)
                tko->OnClick(selected->tko)
                screenlock
            end if

            if actual_tko = selected then Showselected tko

            if btn <> 0 then
                if mx > tko->x and my > tko->y and mx < (tko->x + tko->w) and my < (tko->y + tko->h) then
                    pcopy 1,0
                    tko->PreClick(actual_tko->tko)
                    ShowSelected tko
                    screenunlock
                    do
                        getmouse mx,my, ,btn
                        tko->OnMouseDown(actual_tko->tko)
                    loop until (btn = 0) or (mx < tko->x) or (my < tko->y) or (mx > (tko->x + tko->w)) or (my > (tko->y + tko->h))
                    if mx > tko->x and my > tko->y and mx < (tko->x + tko->w) and my < (tko->y + tko->h) then
                        tko->OnClick(actual_tko->tko)
                    end if
                    screenlock
                    selected = actual_tko
                end if
            end if
            actual_tko = actual_tko->nx_tko
            if actual_tko = 0 and termsign = 0 then
                actual_tko = first_tko
                screenunlock
                pcopy 0,1
                sleep 1
                screenlock
                line(0,0)-(800,600),RGB(255,255,255),BF
            end if

        wend
        screenunlock
        return termsign
    end function

end namespace