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fpc/packages/ncurses/ocrt.pp

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Unit oCrt;
{---------------------------------------------------------------------------
CncWare
(c) Copyright 1999-2000
---------------------------------------------------------------------------
Filename..: ocrt.pp
Programmer: Ken J. Wright, ken@cncware.com
Date......: 03/01/99
Purpose - crt unit replacement plus OOP windows using ncurses.
NOTE: All of the crt procedures & functions have been replaced with ncurses
driven versions. This makes the ncurses library a little easier to use in a
Pascal program and benefits from terminal independence.
-------------------------------<< REVISIONS >>--------------------------------
Ver | Date | Prog| Description
-------+----------+-----+-----------------------------------------------------
1.00 | 03/01/99 | kjw | Initial Release.
| 03/22/99 | kjw | Added nDelWindow(), delwin() does not nil pointer.
1.01 | 11/22/99 | kjw | Added the following: nEcho, ClrEol, ClrBot, InsLine,
| DelLine, Delay, nClrEol, nClrBot, nInsLine, nDelLine,
| nRefresh, nScroll, nDrawBox, nNewWindow, nWinColor,
| nWriteScr, nFrame & some functions for returning
| line drawing character values.
1.02 | 11/26/99 | kjw | Added nKeypressed().
1.03 | 12/01/99 | kjw | Added global boolean nIsActive.
1.04 | 12/03/99 | kjw | 1) Added procedures nHline, nVLine, & nWriteAC.
| 2) Changed all the line draw character functions
| (i.e., nHL, nVL) to return the longint value from
| ncurses rather than the character value (which was
| not very useful!). Now these can be passed to
| nWriteAC() to correctly write the line drawing
| characters.
| 3) Added more of the ACS characters.
1.05 | 12/08/99 | kjw | 1) StartCurses() is now done as part of the unit
| initialization block. EndCurses() is done via an
| exit procedure.
| 2) nIsActive is now a function (safer!).
| 3) Added panel unit for windowing.
| 4) Added tnWindow object.
1.10 | 12/12/99 | kjw | Added nSEdit().
1.11 | 12/12/99 | kjw | Added Special property to tEC object. Now any normal
| character can trigger sedit to exit.
------------------------------------------------------------------------------
2.00 | 12/13/99 | kjw | nCrt renamed to oCrt. A new nCrt has been created
| which is a drop-in replacement for the FPC crt unit.
| oCrt contains all of nCrt plus the OOP extensions.
| All of the common code is in ncrt.inc.
2.01 | 12/15/99 | kjw | 1) A tnWindow object now becomes the target for
| stdout following Init & Show. A Hide will put the
| target back to stdscr.
| 2) Added nSetActiveWin() to manually pick a target
| window for stdout.
2.02 | 12/15/99 | kjw | 1) PutFrame applied keypad to stdscr instead of sub.
| 2) See ncrt.inc
2.03 | 12/16/99 | kjw | 1) See ncrt.inc
| 2) Added shift/f-key constants.
2.04 | 01/04/00 | kjw | See ncrt.inc
2.05 | 01/06/00 | kjw | 1) See ncrt.inc.
| 2) Added boolean internal_fwrite. FWrite was failing
| when trying to write outside of the active window.
| 3) nSEdit was not handling tec.firsttime correctly
| when a tec.special was processed.
2.06 | 01/11/00 | kjw | See ncrt.inc.
2.07 | 01/31/00 | kjw | 1) See ncrt.inc.
| 2) Added getcolor, getframecolor, getheadercolor
| methods to tnWindow.
2.08 | 06/09/00 | kjw | 1) Added Picture property to tEC object. This is
| used for picture input masking in nSEdit.
| 2) Added nCheckPxPicture() function.
| 3) nSEdit() changed to use picture input masking.
| See pxpic.txt for a description of the picture
| string format.
2.08.01 | 06/11/2000 | kjw
| Fixed the spin cycle problem in nCheckPXPicture.
2.09.00 | 06/16/2000 | kjw
| 1) nSEdit renamed to nEdit. Now nSEdit just calls nEdit() for
| compatibility.
| 2) Added overloaded nEdit functions for Integer, LongInt, and
| Real types.
| 3) Changed nEdit() embedding of control characters to preface
| with a ^P. Also now uses a highlight attribute for the control
| characters.
| 4) Added control character cursor control to nEdit().
| 5) Added Esc/1..0 = F1..F10 to nEdit().
| 6) Added '@' to match set in pxpic.inc.
| 7) tnWindow.Align was not positioning properly. Off by one.
| 8) tnWindow.Init used wrong pointer for keypad and intrflush.
| 9) tnWindow.Edit was messing up ec.Special.
2.09.01 | 06/16/2000 | kjw
| 1) nStdScr (tnWindow) added and initialized at unit startup.
| nStdScr can be used for a default full screen window.
| 2) nEdit overloaded to work without a window pointer. It works
| with the currently active window.
2.10.00 | 06/23/2000 | kjw
| 1) Added character mapping to the tEC object. This includes the
| ChMap property and the AddChMap() and ClrChMap() methods.
| 2) Added AppendMode property to the tEC object. The character
| typed in nEdit() is always appended to the current string
| regardless of cursor position. Useful when ExitMode is true.
| 3) tnWindow.Done was not re-assigning an ActiveWn.
| 4) nEdit LeftArrow was allowing < x.
| 5) Added nEditNumber() function.
| 6) Added nEditDate() function.
| 7) I made a command decision and renamed the tEC.FirstTime
| property to tEC.ClearMode as it is more descriptive.
2.11.00 | 1) Cleaned up some loose ends with 2.10.
| 2) Some more overloading
| 3) Removed tnWindow.readln, write, and writeln methods.
| 4) See ncrt.inc.
2.12.00 | 1) Remove the "n" from the tnWindow.editxxx functions for
| consistancy. Procedurals are prefaced with an "n". Object methods
| are not.
| 2) Procedural FWrite renamed to nFWrite.
| 3) tEC object type renamed to tnEC.
| 4) Added nMakeWindow(), a one line procedural wrapper for
| tnWindow.Init and tnWindow.PutHeader.
| 5) Added GetX, GetY, IsFramed methods to tnWindow;
| 6) Fixed nFWrite for too long strings;
| 7) tnWindow.Align was wrong when justify was none.
2.13.00 | 06/30/00 | kjw | See ncrt.inc
2.14.00 | 07/05/00 | kjw | See ncrt.inc
------------------------------------------------------------------------------
}
Interface
Uses linux,ncurses,panel;
Const
{ decimal number format, us or european }
nUS = 0;
nEURO = 1;
nDecFmt : byte = nUS;
{ border styles for text boxes }
btNone : integer = 0;
btSingle : integer = 1;
btDouble : integer = 2;
{ ordinal key codes }
nKeyEnter = 13; { Enter key }
nKeyEsc = 27; { Home key }
nKeyHome = 71; { Home key }
nKeyUp = 72; { Up arrow }
nKeyPgUp = 73; { PgUp key }
nKeyLeft = 75; { Left arrow }
nKeyRight = 77; { Right arrow }
nKeyEnd = 79; { End key }
nKeyDown = 80; { Down arrow }
nKeyPgDn = 81; { PgDn key }
nKeyIns = 82; { Insert key }
nKeyDel = 83; { Delete key }
nKeyCtrlLeft = 115; { Ctrl/left arrow }
nKeyCtrlRight = 116; { Ctrl/right arrow }
nKeyF1 = 59; { f1 key }
nKeyF2 = 60; { f2 key }
nKeyF3 = 61; { f3 key }
nKeyF4 = 62; { f4 key }
nKeyF5 = 63; { f5 key }
nKeyF6 = 64; { f6 key }
nKeyF7 = 65; { f7 key }
nKeyF8 = 66; { f8 key }
nKeyF9 = 67; { f9 key }
nKeyF10 = 68; { f10 key }
nKeyF11 = 84; { shift/f1 key }
nKeyF12 = 85; { shift/f2 key }
nKeyF13 = 86; { shift/f3 key }
nKeyF14 = 87; { shift/f4 key }
nKeyF15 = 88; { shift/f5 key }
nKeyF16 = 89; { shift/f6 key }
nKeyF17 = 90; { shift/f7 key }
nKeyF18 = 91; { shift/f8 key }
nKeyF19 = 92; { shift/f9 key }
nKeyF20 = 93; { shift/f10 key }
{ character mapping }
nMaxChMaps = 255; { maximun index for character mapping }
{ menus }
nMAXMENUITEMS = 23;
Type
{ for scrolling a window }
tnUpDown = (up,down);
{ for window & header positioning }
tnJustify = (none,left,center,right,top,bottom);
{ used for nEC character mapping }
nChMapStr = string[4];
nChMap = array [1..nMaxChMaps] of nChMapStr;
{ used for nSEdit }
{------------------------------------------------------------------------
ClearMode = true : passed string is initialized to ''.
IsHidden = true : causes a string of '*' to display in place of
the actual characters typed.
InsMode : toggle for insert/overwrite mode.
ExitMode = true : sedit exits after every keystroke.
= false: sedit only exits when #27,#13, or any extended
key *except* for Home,End,RArrow,LArrow.
Special : If a pressed key is found in this string, then
sedit exits without processing.
Picture : An input mask string. See pxpic.txt for an
explanation of picture strings.
CtrlColor : The highlight color for embedded control characters.
ChMap : An array of character triplets describing a character
that is typed and what it should map to.
------------------------------------------------------------------------}
tnEC = Object
ClearMode,
IsHidden,
InsMode,
ExitMode,
AppendMode : boolean;
Special : string;
Picture : string;
CtrlColor : integer;
ChMap : nChMap;
Constructor Init(ft,ih,im,em,ap : boolean;
s,p : string;
cc : integer;
mp : nChMap);
Destructor Done;
Function AddChMap(mp : nChMapStr) : integer;
Procedure ClrChMap(idx : integer);
End;
pwin = ^Window;
pnWindow = ^tnWindow;
tnWindow = Object
Private
wn : pwindow; { pointer to win or sub to read/write to }
win : pwindow; { pointer to main window record }
sub : pwindow; { sub window if a bordered window }
pan : ppanel; { pointer to panel record }
subp : ppanel; { sub panel if a bordered window }
visible : boolean; { is the window visible? }
hasframe : boolean;
wincolor, { window color }
framecolor, { frame color }
hdrcolor : integer; { header color }
header : string[80]; { header string }
Public
ec : tnEC; { edit control settings }
Constructor Init(x,y,x1,y1,wcolor : integer;
border : boolean;
fcolor : integer);
Destructor Done;
Procedure Active; { make this the current window }
Procedure Show; { display the window }
Procedure Hide; { hide the window }
Procedure ClrScr;
Procedure ClrEol;
Procedure ClrBot;
Procedure InsLine;
Procedure DelLine;
Procedure GotoXY(x,y : integer);
Function WhereX : integer;
Function WhereY : integer;
Function ReadKey : char;
Procedure WriteAC(x,y,att,c : longint);
Procedure FWrite(x,y,att,z : integer; s : string);
Procedure DrawBox(LineStyle,x1,y1,x2,y2,att : Integer);
Function GetHeader : string;
Procedure PutHeader(hdr : string; hcolor : integer; hpos : tnJustify);
Procedure SetColor(att : integer);
Function GetColor : integer;
Function GetFrameColor : integer;
Function GetHeaderColor : integer;
Procedure PutFrame(att : integer);
Procedure Move(x,y : integer);
Procedure Scroll(ln : integer; dir : tnUpDown);
Procedure Align(hpos,vpos : tnJustify);
Function Rows : integer;
Function Cols : integer;
Function GetX : integer;
Function GetY : integer;
Function IsFramed : boolean;
Function Edit(x,y,att,z,CursPos:Integer;es:String;Var ch : Char) : String;
Function Edit(x,y,att,z,CursPos:Integer;es:LongInt;Var ch : Char) : LongInt;
Function Edit(x,y,att,z,CursPos:Integer;es:Real;Var ch : Char) : Real;
Function EditNumber(x,y,att,wid,decm : integer;bgd : string;initv,minv,maxv : real;var esc : boolean) : real;
Function EditNumber(x,y,att,wid,decm : integer;bgd : string;initv,minv,maxv : longint;var esc : boolean) : longint;
Function EditDate(x,y,att : integer;initv : string;var esc : boolean) : string;
End;
Var
nStdScr : tnWindow; { default window created at unit initialization }
nscreen : pwin; { pointer to ncurses stdscr }
nEC : tnEC; { global edit control object }
Procedure nSetActiveWin(win : pwindow);
Procedure nDoNow(donow : boolean);
Function nKeypressed(timeout : word) : boolean;
Procedure nEcho(b : boolean);
Procedure nWindow(var win : pWindow; x,y,x1,y1 : integer);
Procedure nNewWindow(var win : pWindow; x,y,x1,y1 : integer);
Procedure nDelWindow(var win : pWindow);
Procedure nWinColor(win : pWindow; att : integer);
Procedure nClrScr(win : pWindow; att : integer);
Procedure nClrEol(win : pWindow);
Procedure nClrBot(win : pWindow);
Procedure nInsLine(win : pWindow);
Procedure nDelLine(win : pWindow);
Procedure nGotoXY(win : pWindow; x,y : integer);
Function nWhereX(win : pWindow) : integer;
Function nWhereY(win : pWindow) : integer;
Function nReadkey(win : pWindow) : char;
Function nReadln(win : pWindow) : string;
Procedure nWrite(win : pWindow; s : string);
Procedure nWriteln(win : pWindow; s : string);
Procedure nWriteScr(win : pWindow; x,y,att : integer; s : string);
Procedure nRefresh(win : pWindow);
Procedure nScroll(win : pWindow; lines : integer; dir : tnUpDown);
Procedure nDrawBox(win : pWindow; LineStyle,x1,y1,x2,y2,att : Integer);
Procedure nFrame(win : pWindow);
Function nRows(win : pWindow) : integer;
Function nCols(win : pWindow) : integer;
Function nHL : longint; { horizontal line }
Function nVL : longint; { vertical line }
Function nUL : longint; { upper left corner }
Function nLL : longint; { lower loft corner }
Function nUR : longint; { upper right corner }
Function nLR : longint; { lower right corner }
Function nLT : longint; { left tee }
Function nRT : longint; { right tee }
Function nTT : longint; { top tee }
Function nBT : longint; { bottom tee }
Function nPL : longint; { plus, + }
Function nLA : longint; { left arrow }
Function nRA : longint; { right arrow }
Function nUA : longint; { up arror }
Function nDA : longint; { down arrow }
Function nDI : longint; { diamond }
Function nCB : longint; { checkerboard }
Function nDG : longint; { degree }
Function nPM : longint; { plus/minus }
Function nBL : longint; { bullet }
Procedure nHLine(win : pwindow; col,row,attr,x : integer);
Procedure nVLine(win : pwindow; col,row,attr,y : integer);
Procedure nWriteAC(win : pwindow; x,y : integer; att,acs_char : longint);
Function IsBold(att : integer) : boolean;
Function SetColorPair(att : integer) : integer;
Procedure nFWrite(win : pwindow; col,row,attrib : integer; clear : integer; s : string);
Procedure nFWrite(col,row,attrib : integer; clear : integer; s : string);
Function nSEdit(win : pwindow; x,y,att,z,CursPos:Integer;es:String;Var ch : Char) : String;
Function nEdit(win : pwindow; x,y,att,z,CursPos:Integer;es:String;Var ch : Char) : String;
Function nEdit(win : pwindow; x,y,att,z,CursPos:Integer;es:LongInt;Var ch : Char) : LongInt;
Function nEdit(win : pwindow; x,y,att,z,CursPos:Integer;es:Real;Var ch : Char) : Real;
Function nEdit(x,y,att,z,CursPos:Integer;es:String;Var ch : Char) : String;
Function nEdit(x,y,att,z,CursPos:Integer;es:LongInt;Var ch : Char) : LongInt;
Function nEdit(x,y,att,z,CursPos:Integer;es:Real;Var ch : Char) : Real;
Function nEditNumber(win : pwindow; x,y,att,wid,decm : integer;bgd : string;initv,minv,maxv : real;var esc : boolean) : real;
Function nEditNumber(win : pwindow; x,y,att,wid,decm : integer;bgd : string;initv,minv,maxv : longint;var esc : boolean) : longint;
Function nEditNumber(x,y,att,wid,decm : integer;bgd : string;initv,minv,maxv : real;var esc : boolean) : real;
Function nEditNumber(x,y,att,wid,decm : integer;bgd : string;initv,minv,maxv : longint;var esc : boolean) : longint;
Function nEditDate(win : pwindow; x,y,att : integer;initv : string;var esc : boolean) : string;
Function nEditDate(x,y,att : integer;initv : string;var esc : boolean) : string;
Procedure nMakeWindow(var win : tnWindow;x1,y1,x2,y2,ta,ba,ha : integer;hasframe : boolean;hdrpos : tnJustify;hdrtxt : string);
Function nCheckPxPicture(var s, Pic : string; var CPos : integer) : word;
{$i ncrt.inc}
{$i pxpic.inc}
Var
_chmap : nChMap;
{---------------------------------------------------------------------
tnWindow.Init
Create a new window.
x = upper left corner x, screen relative
y = upper left corner y, screen relative
x1 = lower right corner x, screen relative
y1 = lower right corner y, screen relative
wcolor = window/text color
border = include a frame?
fcolor = frame color
---------------------------------------------------------------------}
Constructor tnWindow.Init(x,y,x1,y1,wcolor : integer;
border : boolean;
fcolor : integer);
Var
mp : nChMap;
Begin
visible := false;
hasframe := false;
wincolor := wcolor;
framecolor := fcolor;
hdrcolor := wcolor;
header := '';
win := nil;
sub := nil;
pan := nil;
subp := nil;
visible := false;
win := newwin(y1-y+1,x1-x+1,y-1,x-1);
pan := new_panel(win);
hide_panel(pan);
If border Then
PutFrame(fcolor)
Else Begin
wn := win;
wbkgd(win,COLOR_PAIR(SetColorPair(wcolor)));
If isbold(wcolor) then wattr_on(win,A_BOLD);
scrollok(win,bool(true));
intrflush(win,bool(false));
keypad(win,bool(true));
End;
FillChar(mp,SizeOf(mp),#0);
ec.Init(false,false,false,false,false,'','',15,mp);
ActiveWn := wn;
End;
{ deallocate the window }
Destructor tnWindow.Done;
Begin
If subp <> nil Then del_panel(subp);
If pan <> nil Then del_panel(pan);
If sub <> nil Then delwin(sub);
If (win <> nil) and (win <> stdscr) Then delwin(win);
ec.Done;
ActiveWn := nscreen;
End;
{ make the window current for all normal crt requests }
Procedure tnWindow.Active;
Begin
ActiveWn := wn;
End;
{ display the window and move to the top }
Procedure tnWindow.Show;
Begin
ActiveWn := wn;
visible := true;
show_panel(pan);
If subp <> nil Then show_panel(subp);
update_panels;
doupdate;
End;
{ hide the window }
Procedure tnWindow.Hide;
Begin
ActiveWn := stdscr;
{ ActiveWn := nStdScr.win;}
visible := false;
If subp <> nil Then hide_panel(subp);
hide_panel(pan);
update_panels;
doupdate;
End;
Procedure tnWindow.ClrScr;
Begin
tmp_b := dorefresh;
dorefresh := visible;
nClrScr(wn,wincolor);
dorefresh := tmp_b;
End;
Procedure tnWindow.ClrEol;
Begin
tmp_b := dorefresh;
dorefresh := visible;
nClrEol(wn);
dorefresh := tmp_b;
End;
Procedure tnWindow.ClrBot;
Begin
tmp_b := dorefresh;
dorefresh := visible;
nClrBot(wn);
dorefresh := tmp_b;
End;
Procedure tnWindow.InsLine;
Begin
tmp_b := dorefresh;
dorefresh := visible;
nInsLine(wn);
dorefresh := tmp_b;
End;
Procedure tnWindow.DelLine;
Begin
tmp_b := dorefresh;
dorefresh := visible;
nDelLine(wn);
dorefresh := tmp_b;
End;
{ return the window border header string }
Function tnWindow.GetHeader : string;
Begin
GetHeader := header;
End;
{----------------------------------------------------------------------
put/replace a header string at the top of a bordered window
hdr = header string (top line of window, only if hasframe = true)
hcolor = header line color
hpos = justfication of header string, left, center, or right
----------------------------------------------------------------------}
Procedure tnWindow.PutHeader(hdr : string; hcolor : integer; hpos : tnJustify);
Var
cp,
hx,
len : integer;
att,
mx,my : longint;
Begin
If Hasframe Then Begin
If hdr <> '' Then Begin
header := hdr;
hdrcolor := hcolor;
getmaxyx(win,my,mx);
nHline(win,2,1,framecolor,mx-1);
len := mx-2;
hdr := Copy(hdr,1,len);
len := Length(hdr);
Case hpos of
left : hx := 1;
center : hx := (mx - len) div 2;
right : hx := (mx - len) - 1;
End;
mvwaddstr(win,0,hx,StrPCopy(ps,hdr));
cp := SetColorPair(hcolor);
If IsBold(hcolor) Then
att := A_BOLD
Else
att := A_NORMAL;
mvwchgat(win,0,hx,len,att,cp,0);
End;
End;
End;
{ set the the color of the writable window }
Procedure tnWindow.SetColor(att : integer);
Begin
wbkgd(wn,COLOR_PAIR(SetColorPair(att)));
If isbold(att) then wattr_set(wn,A_BOLD);
wincolor := att;
If visible Then wrefresh(wn);
End;
{ get the writeable window color }
Function tnWindow.GetColor : integer;
Begin
GetColor := wincolor;
End;
{ get the frame color }
Function tnWindow.GetFrameColor : integer;
Begin
GetFrameColor := framecolor;
End;
{ get the header color }
Function tnWindow.GetHeaderColor : integer;
Begin
GetHeaderColor := hdrcolor;
End;
{ frame an un-framed window, or update the frame color of a framed window }
Procedure tnWindow.PutFrame(att : integer);
Var
x,y,
mx,my,
atts : longint;
Begin
wbkgd(win,COLOR_PAIR(SetColorPair(att)));
atts := wattr_get(win);
If isbold(att) then wattr_on(win,atts or A_BOLD);
box(win,ACS_VLINE,ACS_HLINE);
framecolor := att;
If framecolor = -1 Then framecolor := wincolor;
hasframe := true;
If sub = nil Then Begin
getbegyx(win,y,x);
getmaxyx(win,my,mx);
sub := newwin(my-2,mx-2,y+1,x+1);
If sub <> nil Then Begin
subp := new_panel(sub);
hide_panel(subp);
wbkgd(sub,COLOR_PAIR(SetColorPair(wincolor)));
If isbold(wincolor) then wattr_on(sub,A_BOLD);
scrollok(sub,bool(true));
intrflush(sub,bool(false));
keypad(sub,bool(true));
wn := sub;
End;
End;
touchwin(sub);
If visible Then Begin
wrefresh(win);
wrefresh(sub);
End;
End;
{ move the window }
Procedure tnWindow.Move(x,y : integer);
Begin
move_panel(pan,y-1,x-1);
If subp <> nil Then move_panel(subp,y,x);
If visible Then Begin
update_panels;
doupdate;
End;
End;
Procedure tnWindow.Align(hpos,vpos : tnJustify);
Var
x,y,
bx,by : longint;
Begin
getmaxyx(win,y,x);
getbegyx(win,by,bx);
Case hpos of
none : x := bx;
left : x := 1;
right : x := MaxCols - x;
center : x := (MaxCols - x) div 2;
End;
Case vpos of
none : y := by;
top : y := 1;
bottom : y := MaxRows - y;
center : y := (MaxRows - y) div 2;
End;
move(x+1,y+1);
End;
Procedure tnWindow.Scroll(ln : integer; dir : tnUpDown);
Begin
nScroll(wn,ln,dir);
End;
Procedure tnWindow.GotoXY(x,y : integer);
Begin
tmp_b := dorefresh;
dorefresh := visible;
nGotoXY(wn,x,y);
dorefresh := tmp_b;
End;
Function tnWindow.WhereX : integer;
Begin
WhereX := nWhereX(wn);
End;
Function tnWindow.WhereY : integer;
Begin
WhereY := nWhereY(wn);
End;
Function tnWindow.ReadKey : char;
Begin
ReadKey := nReadKey(wn);
End;
Procedure tnWindow.WriteAC(x,y,att,c : longint);
Begin
tmp_b := dorefresh;
dorefresh := visible;
nWriteAC(wn,x,y,att,c);
dorefresh := tmp_b;
End;
Procedure tnWindow.FWrite(x,y,att,z : integer; s : string);
Begin
tmp_b := dorefresh;
dorefresh := visible;
nFWrite(wn,x,y,att,z,s);
dorefresh := tmp_b;
End;
Procedure tnWindow.DrawBox(LineStyle,x1,y1,x2,y2,att : Integer);
Begin
tmp_b := dorefresh;
dorefresh := visible;
nDrawBox(wn,LineStyle,x1,y1,x2,y2,att);
dorefresh := tmp_b;
End;
Function tnWindow.Rows : integer;
Begin
Rows := nRows(wn);
End;
Function tnWindow.Cols : integer;
Begin
Cols := nCols(wn);
End;
Function tnWindow.GetX : integer;
Var
x,y : longint;
Begin
getbegyx(win,y,x);
GetX := x+1;
End;
Function tnWindow.GetY : integer;
Var
x,y : longint;
Begin
getbegyx(win,y,x);
GetY := y+1;
End;
Function tnWindow.IsFramed : boolean;
Begin
IsFramed := hasframe;
End;
Function tnWindow.Edit(x,y,att,z,CursPos:Integer;es:String;Var ch : Char) : String;
var
tmp_ec : tnec;
Begin
{ save global ec}
tmp_ec := nEC;
{ init global ec to window ec }
nEC := ec;
Edit := nEdit(wn,x,y,att,z,CursPos,es,ch);
{ re-init window ec to possible changed values }
ec.ClearMode := nEC.ClearMode;
ec.InsMode := nEC.InsMode;
{ init global ec to saved }
nEC := tmp_ec;
End;
{ overload for longint }
Function tnWindow.Edit(x,y,att,z,CursPos:Integer;es:LongInt;Var ch : Char) : LongInt;
var
tmp_ec : tnec;
Begin
tmp_ec := nEC;
nEC := ec;
Edit := nEdit(wn,x,y,att,z,CursPos,es,ch);
ec.ClearMode := nEC.ClearMode;
ec.InsMode := nEC.InsMode;
nEC := tmp_ec;
End;
{ overload for real }
Function tnWindow.Edit(x,y,att,z,CursPos:Integer;es:Real;Var ch : Char) : Real;
var
tmp_ec : tnec;
Begin
tmp_ec := nEC;
nEC := ec;
Edit := nEdit(wn,x,y,att,z,CursPos,es,ch);
ec.ClearMode := nEC.ClearMode;
ec.InsMode := nEC.InsMode;
nEC := tmp_ec;
End;
Function tnWindow.EditNumber(x,y,att,wid,decm : integer;bgd : string;initv,minv,maxv : real;var esc : boolean) : real;
var
tmp_ec : tnec;
Begin
tmp_ec := nEC;
nEC := ec;
EditNumber := nEditNumber(wn,x,y,att,wid,decm,bgd,initv,minv,maxv,esc);
ec.ClearMode := nEC.ClearMode;
ec.InsMode := nEC.InsMode;
nEC := tmp_ec;
End;
Function tnWindow.EditNumber(x,y,att,wid,decm : integer;bgd : string;initv,minv,maxv : longint;var esc : boolean) : longint;
var
tmp_ec : tnec;
Begin
tmp_ec := nEC;
nEC := ec;
EditNumber := nEditNumber(wn,x,y,att,wid,decm,bgd,initv,minv,maxv,esc);
ec.ClearMode := nEC.ClearMode;
ec.InsMode := nEC.InsMode;
nEC := tmp_ec;
End;
Function tnWindow.EditDate(x,y,att : integer;initv : string;var esc : boolean) : string;
var
tmp_ec : tnec;
Begin
tmp_ec := nEC;
nEC := ec;
EditDate := nEditDate(wn,x,y,att,initv,esc);
ec.ClearMode := nEC.ClearMode;
ec.InsMode := nEC.InsMode;
nEC := tmp_ec;
End;
{--------------------------- tnEC -------------------------------}
Constructor tnEC.Init(ft,ih,im,em,ap : boolean;
s,p : string;
cc : integer;
mp : nChMap);
Begin
ClearMode := ft;
IsHidden := ih;
InsMode := im;
ExitMode := em;
AppendMode := ap;
Special := s;
Picture := p;
CtrlColor := cc;
ChMap := mp;
End;
Destructor tnEC.Done;
Begin
End;
{ Add or replace a character map }
Function tnEC.AddChMap(mp : nChMapStr) : integer;
Var
i : integer;
Begin
i := 0;
Repeat
inc(i);
Until (i > nMaxChMaps) or (Copy(ChMap[i],1,2) = Copy(mp,1,2)) or (ChMap[i] = '');
If i <= nMaxChMaps Then Begin
AddChMap := i;
ChMap[i] := mp;
End Else
AddChMap := 0;
End;
Procedure tnEC.ClrChMap(idx : integer);
Begin
Case idx of
0 : FillChar(ChMap,SizeOf(ChMap),#0);
1..nMaxChMaps : ChMap[idx] := '';
End;
End;
{==========================================================================}
{ set the active window for write(ln), read(ln) }
Procedure nSetActiveWin(win : pwindow);
Begin
ActiveWn := win;
End;
{----------------------------------------------------------------
Set the refresh toggle.
If true, then all changes to a window are immediate. If false,
then changes appear following the next call to nRefresh.
----------------------------------------------------------------}
Procedure nDoNow(donow : boolean);
Begin
dorefresh := donow;
End;
{-----------------------------------------------------
Set the echo flag.
This determines whether or not, characters are
echoed to the display when entered via the keyboard.
-----------------------------------------------------}
Procedure nEcho(b : boolean);
Begin
Case b of
true : echo;
false: noecho;
End;
isEcho := b;
End;
{ create a new subwindow of stdscr }
Procedure nWindow(var win : pWindow; x,y,x1,y1 : integer);
Begin
nDelWindow(win);
win := subwin(stdscr,y1-y+1,x1-x+1,y-1,x-1);
If win = nil then Exit;
intrflush(win,bool(false));
keypad(win,bool(true));
scrollok(win,bool(true));
ActiveWn := win;
End;
{ create a new window }
Procedure nNewWindow(var win : pWindow; x,y,x1,y1 : integer);
Begin
nDelWindow(win);
win := newwin(y1-y+1,x1-x+1,y-1,x-1);
If win = nil then Exit;
intrflush(win,bool(false));
keypad(win,bool(true));
scrollok(win,bool(true));
ActiveWn := win;
End;
{ repaint a window }
Procedure nRefresh(win : pWindow);
Begin
touchwin(win);
wrefresh(win);
End;
{----------------------------------------------
Wait for a key to be pressed, with a timeout.
If a key is pressed, then nKeypressed returns
immediately as true, otherwise it return as
false after the timeout period.
----------------------------------------------}
function nKeypressed(timeout : word) : boolean;
var
fds : FDSet;
maxFD : longint;
Begin
FD_Zero(fds);
maxFD := 1;
{ turn on stdin bit }
If not FD_IsSet(STDIN,fds) Then FD_Set(STDIN,fds);
{ wait for some input }
If Select(maxFD,@fds,nil,nil,timeout) > 0 Then
nKeypressed := TRUE
Else
nKeypressed := FALSE;
End;
{---------------------------------
read input string from a window
---------------------------------}
Function nReadln(win : pWindow) : string;
Begin
wgetstr(win,ps);
nReadln := StrPas(ps);
End;
{ write a string to a window without refreshing screen }
Procedure nWriteScr(win : pWindow; x,y,att : integer; s : string);
Var
tmp : pwindow;
Begin
tmp := ActiveWn;
tmp_b := doRefresh;
ActiveWn := win;
doRefresh := false;
nFWrite(win,x,y,att,0,s);
ActiveWn := tmp;
doRefresh := tmp_b;
End;
{----------------------------------------------------------
Scroll a window, up or down, a specified number of lines.
lines = number of lines to scroll.
dir = direction, up or down.
----------------------------------------------------------}
Procedure nScroll(win : pWindow; lines : integer; dir : tnUpDown);
Begin
ScrollOk(win,bool(True));
Case dir of
up : lines := abs(lines);
down : lines := abs(lines) * (-1);
End;
wscrl(win,lines);
If doRefresh Then wRefresh(win);
End;
{ draw a colored box, with or without a border }
Procedure nDrawBox(win : pWindow; LineStyle,x1,y1,x2,y2,att : Integer);
Var
sub : pWindow;
x,y : longint;
Begin
getbegyx(win,y,x);
sub := subwin(win,y2-y1+1,x2-x1+1,y+y1-1,x+x1-1);
If sub = nil Then exit;
wbkgd(sub,CursesAtts(att));
werase(sub);
case LineStyle of
1,2 : box(sub, ACS_VLINE, ACS_HLINE);
End;
If doRefresh Then wrefresh(sub);
nDelWindow(sub);
End;
{---------------------------
add a border to a window,
waits for a refresh
---------------------------}
Procedure nFrame(win : pWindow);
Begin
box(win, ACS_VLINE, ACS_HLINE);
End;
{-----------------------------------------------------------
write a string to a window at the current cursor position
followed by a newline
-----------------------------------------------------------}
Procedure nWriteln(win : pWindow; s : string);
Begin
waddstr(win,StrPCopy(ps,s+#10));
If doRefresh Then wrefresh(win);
End;
{ return then number of rows in a window }
Function nRows(win : pWindow) : integer;
Var
x,y : longint;
Begin
getmaxyx(win,y,x);
nRows := y;
End;
{ return then number of columns in a window }
Function nCols(win : pWindow) : integer;
Var
x,y : longint;
Begin
getmaxyx(win,y,x);
nCols := x;
End;
{-------------------------------------------------------
Line drawing characters have to be handled specially.
Use nWriteAC() to write these characters. They cannot
be simply included as characters in a string.
-------------------------------------------------------}
{ returns horizontal line character }
Function nHL : longint;
Begin
nHL := ACS_HLINE;
End;
{ returns vertical line character }
Function nVL : longint;
Begin
nVL := ACS_VLINE;
End;
{ returns upper left corner character }
Function nUL : longint;
Begin
nUL := ACS_ULCORNER;
End;
{ returns lower left corner character }
Function nLL : longint;
Begin
nLL := ACS_LLCORNER;
End;
{ returns upper right corner character }
Function nUR : longint;
Begin
nUR := ACS_URCORNER;
End;
{ returns lower right corner character }
Function nLR : longint;
Begin
nLR := ACS_LRCORNER;
End;
{ returns left tee character }
Function nLT : longint;
Begin
nLT := ACS_LTEE;
End;
{ returns right tee character }
Function nRT : longint;
Begin
nRT := ACS_RTEE;
End;
{ returns top tee character }
Function nTT : longint;
Begin
nTT := ACS_TTEE;
End;
{ returns bottom tee character }
Function nBT : longint;
Begin
nBT := ACS_BTEE;
End;
{ returns plus/cross character }
Function nPL : longint;
Begin
nPL := ACS_PLUS;
End;
{ returns left arrow character }
Function nLA : longint;
Begin
nLA := ACS_LARROW;
End;
{ returns right arrow character }
Function nRA : longint;
Begin
nRA := ACS_RARROW;
End;
{ returns up arrow character }
Function nUA : longint;
Begin
nUA := ACS_UARROW;
End;
{ returns down arrow character }
Function nDA : longint;
Begin
nDA := ACS_DARROW;
End;
{ returns diamond character }
Function nDI : longint;
Begin
nDI := ACS_DIAMOND;
End;
{ returns checkerboard character }
Function nCB : longint;
Begin
nCB := ACS_CKBOARD;
End;
{ returns degree character }
Function nDG : longint;
Begin
nDG := ACS_DEGREE;
End;
{ returns plus/minus character }
Function nPM : longint;
Begin
nPM := ACS_PLMINUS;
End;
{ returns bullet character }
Function nBL : longint;
Begin
nBL := ACS_BULLET;
End;
{ draw a horizontal line with color and a start & end position }
Procedure nHLine(win : pwindow; col,row,attr,x : integer);
var
sub : pwindow;
bx,by : longint;
Begin
getbegyx(win,by,bx);
sub := subwin(win,1,x-col+1,by+row-1,bx+col-1);
If sub = nil Then Exit;
x := getmaxx(sub);
wbkgd(sub,CursesAtts(attr));
mvwhline(sub,0,0,ACS_HLINE,x);
If doRefresh Then wrefresh(sub);
delwin(sub);
End;
{ draw a vertical line with color and a start & end position }
Procedure nVLine(win : pwindow; col,row,attr,y : integer);
var sub : pwindow;
Begin
sub := subwin(win,y-row+1,1,row-1,col-1);
If sub = nil Then Exit;
wbkgd(sub,CursesAtts(attr));
mvwvline(sub,0,0,ACS_VLINE,y);
If doRefresh Then wrefresh(sub);
delwin(sub);
End;
{----------------------------------------------------------------
Write a character from the alternate character set. A normal
value from the alternate character set is larger than $400000.
If the value passed here is 128..255, then we assume it to be
the ordinal value from the IBM extended character set, and try
to map it to curses correctly. If it does not map, then we just
make it an alternate character and hope the output is what the
programmer expected. Note: this will work on the Linux console
just fine, but for other terminals the passed value must match
the termcap definition for the alternate character.
Note: The cursor returns to it's original position.
----------------------------------------------------------------}
Procedure nWriteAC(win : pwindow; x,y : integer; att,acs_char : longint);
var
xx,yy,
cp : longint;
Begin
If acs_char in [0..255] Then Begin
Case acs_char of
176 : acs_char := ACS_CKBOARD;
179 : acs_char := ACS_VLINE;
180 : acs_char := ACS_RTEE;
191 : acs_char := ACS_URCORNER;
192 : acs_char := ACS_LLCORNER;
193 : acs_char := ACS_BTEE;
194 : acs_char := ACS_TTEE;
195 : acs_char := ACS_LTEE;
196 : acs_char := ACS_HLINE;
197 : acs_char := ACS_PLUS;
218 : acs_char := ACS_ULCORNER;
217 : acs_char := ACS_LRCORNER;
241 : acs_char := ACS_PLMINUS;
248 : acs_char := ACS_DEGREE;
249 : acs_char := ACS_BULLET;
else acs_char := acs_char or A_ALTCHARSET;
End;
End;
{ save the current cursor position }
getyx(win,yy,xx);
cp := SetColorPair(att);
{ write character with current attributes }
mvwaddch(win,y-1,x-1,acs_char);
{ update with new attributes }
If IsBold(att) Then
att := A_BOLD or A_ALTCHARSET
Else
att := A_NORMAL or A_ALTCHARSET;
mvwchgat(win,y-1,x-1,1,att,cp,0);
{ return cursor to saved position }
wmove(win,yy,xx);
If doRefresh Then wrefresh(win);
End;
{-------------------------------------------------------------------
write a string to stdscr with color, without moving the cursor
Col = x start position
Row = y start position
Attrib = color (0..127), note color = (background*16)+foreground
Clear = clear line up to x position
s = string to write
-------------------------------------------------------------------}
Procedure nFWrite(win : pwindow; col,row,attrib : integer; clear : integer; s : string);
var
clr : array [0..255] of char;
cs : string;
sub : pWindow;
x,y,
mx,my,
xx,yy : longint;
ctrl : boolean;
Begin
if Clear > 0 Then Begin
FillChar(clr,SizeOf(clr),' ');
clr[SizeOf(clr)-1] := #0;
If Clear > MaxCols Then Clear := MaxCols;
cs := Copy(StrPas(clr),1,(Clear-Col)-Length(s)+1);
End Else
cs := '';
s := s+cs;
If s = '' Then Exit;
getyx(win,yy,xx);
getbegyx(win,y,x);
getmaxyx(win,my,mx);
If Length(s) > mx Then s := Copy(s,1,mx);
sub := subwin(win,1,Length(s),y+row-1,x+col-1);
If sub = nil Then Exit;
cs := s;
ctrl := false;
{ look for embedded control characters }
For x := 1 to Length(s) Do Begin
If s[x] in [#0..#31] Then Begin
s[x] := ' ';
ctrl := true;
End;
End;
wbkgd(sub,COLOR_PAIR(SetColorPair(Attrib)));
If isbold(Attrib) then
wattr_on(sub,A_BOLD);
mvwaddstr(sub,0,0,StrPCopy(ps,s));
{ highlight the embedded control characters substitutes }
If ctrl Then Begin
{ nEC is always the current edit control object }
If Attrib <> nEC.CtrlColor Then
nWinColor(sub,nEC.CtrlColor)
Else Begin
{ reverse the highlight color if same as current attribute }
bg := nEC.CtrlColor div 16;
fg := nEC.CtrlColor - (bg * 16);
While bg > 7 Do dec(bg,8);
While fg > 7 Do dec(fg,8);
nWinColor(sub,(fg*16)+bg);
End;
For x := 1 to Length(cs) Do Begin
If cs[x] in [#0..#31] Then
mvwaddch(sub,0,x-1,ord(cs[x])+64);
End;
End;
If doRefresh Then wrefresh(sub);
delwin(sub);
wmove(win,yy,xx);
End;
{ overload - no pointer }
Procedure nFWrite(col,row,attrib : integer; clear : integer; s : string);
Begin
nFWrite(ActiveWn,col,row,attrib,clear,s);
End;
{ compatibility for the old function name }
Function nSEdit(win : pwindow; x,y,att,z,CursPos:integer;
es:string;var ch : char) : string;
Var
s : string;
Begin
s := nEdit(win,x,y,att,z,CursPos,es,ch);
nSEdit := s;
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
{ String Editor }
Function nEdit(win : pwindow; x,y,att,z,CursPos:integer;
es:string;var ch : char) : string;
Var
ZMode,
AppendMode,
SEditExit : boolean;
prvx,
prvy,
pidx,
pres,
Index : integer;
ts,
hes : string;
isextended : boolean;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure NewString;
BEGIN
nEdit := es;
hes := es;
FillChar(hes[1],Length(hes),'*');
END;
Procedure WriteString;
Var
xx,yy : integer;
Begin
xx := nWhereX(win);
yy := nWhereY(win);
If nEC.IsHidden Then
nFWrite(win,x,y,att,z,hes)
Else
nFWrite(win,x,y,att,z,es);
nGotoXY(win,xx,yy);
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure EInsMode;
Begin
nEC.InsMode := (not nEC.InsMode)
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure WriteChar;
var s : string;
Begin
ts := es;
If AppendMode Then Begin
es := es + ' ';
Index := Length(es);
End Else Begin
If nWhereX(win) >= Length(es)+x Then Repeat
es := es + ' ';
Until Length(es)+x-1 = nWhereX(win);
If es = '' Then es := ' ';
If Length(es)+x-1 = nWhereX(win) Then Index := Length(es);
End;
es[Index] := ch;
s := Copy(es,1,Index);
If nCheckPxPicture(s,nEC.Picture,pidx) <> 0 Then Begin
{ no error, picture satisfied }
If (Length(s) > Length(es)) or
((Length(s) = Length(es)) and (s <> es)) Then Begin
{ expanded/changed by picture }
es := s;
End;
If pidx > Index Then Begin
If pidx > Length(es) Then pidx := Length(es);
If pidx > Index Then Index := pidx;
End;
End Else Begin
{ error, did not fit the picture }
Sound(1000);
Delay(50);
NoSound;
es := ts;
Dec(Index);
End;
NewString;
WriteString;
If (Index < z-x+1) or not ZMode Then Begin
Index := Index+1;
nGotoXY(win,x+Index-1,y);
End;
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure EInsert; { Insert }
Begin
If Length(es) < Z-X+1 Then Begin
ts := es;
Insert(' ',es,Index);
If nCheckPXPicture(es,nEC.Picture,pidx) = 0 Then Begin
Sound(1000);
Delay(50);
NoSound;
es := ts;
ch := #255;
End;
NewString;
WriteString;
End;
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure EDelete; { Delete }
Begin
ts := es;
Delete(es,Index,1);
If nCheckPXPicture(es,nEC.Picture,pidx) = 0 Then Begin
Sound(1000);
Delay(50);
NoSound;
es := ts;
ch := #255;
End;
NewString;
WriteString;
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure ECtrlEnd; { <CTRL> End }
Begin
Delete(es,Index,Length(es));
NewString;
WriteString;
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure EHome; { Home }
Begin
Index := 1;
nGotoXY(win,x,y);
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure ELeftArrow; { Left Arrow }
Begin
If nWhereX(win) > x Then Begin
dec(Index);
nGotoXY(win,nWhereX(win)-1,nWhereY(win));
End;
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure ERightArrow; { Right Arrow }
Begin
If Index < z-x+1 Then Begin
nGotoXY(win,nWhereX(win)+1,nWhereY(win));
Index := Index + 1;
End;
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure EEnd; { End }
Begin
Index := Length(es)+1;
If Index > z-x+1 Then Index := Length(es);
If Index < 1 Then Index := 1;
If Index > MaxCols Then Index := MaxCols;
nGotoXY(win,x+(Index-1),y);
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure EBackSpace; { Backspace }
Begin
Index := Index - 1;
If Index < 1 Then Begin
Index := 1;
Exit;
End Else
If nWhereX(win) > x Then nGotoXY(win,nWhereX(win) - 1,nWhereY(win));
Delete(es,Index,1);
NewString;
WriteString;
nGotoXY(win,x+(Index-1),y);
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure ETurboBackSpace; { Ctrl/Backspace }
Begin
If Index = 1 Then Exit;
Delete(es,1,Index-1);
NewString;
Index := 1;
If nWhereX(win) > x Then nGotoXY(win,1,nWhereY(win));
WriteString;
nGotoXY(win,x,y);
END;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure ECtrlLeftArrow;{ Ctrl Left Arrow }
Begin
If nEC.IsHidden Then Begin
EHome;
Exit;
End;
If es[Index-1] = ' ' Then Index := Index-1;
If es[Index] <> ' ' Then Begin
While (Index > 1) And (es[Index] <> ' ') Do
Index := Index-1;
End Else
If es[Index] = ' ' Then Begin
While (Index > 1) And (es[Index] = ' ') Do
Index := Index-1;
While (Index > 1) And (es[Index] <> ' ') Do
Index := Index-1;
End;
If Index = 1 Then
nGotoXY(win,x,y)
Else Begin
nGotoXY(win,x+Index,y);
Index := Index+1;
End;
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure ECtrlRightArrow;{ Ctrl Right Arrow }
Begin
If nEC.IsHidden Then Begin
EEnd;
Exit;
End;
While (Index < Length(es)) And (es[Index] <> ' ') Do
Begin
Index := Index+1;
End;
While (Index < Length(es)) And (es[Index] = ' ') Do
Begin
Index := Index+1;
End;
nGotoXY(win,x+Index-1,y);
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure CheckForWriteChar(embed : boolean);
Begin
If embed or Not (Ch In [#27,#255]) Then Begin
If (ch in [#10,#13]) and (not embed) {and not ControlKey} Then exit;
If nEC.ClearMode Then Begin
es := '';
WriteString;
nGotoXY(win,X,Y);
Index := 1;
WriteChar;
nEC.ClearMode := False;
End Else Begin
If nEC.InsMode Then Begin
EInsert;
WriteChar;
End Else WriteChar;
End;
End;
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure ProcessSpecialKey;
begin
If ch = #129 Then ch := #68; { Linux, map Esc/0 to F10 }
Case ch of
#16..#25,
#30..#38,
#44..#50,
#59..#68,
#84..#90,
#92..#113,
#118,
#132,
#72,
#73,
#80,
#81 : Begin SEditExit:=True;Exit;End;
#71 : EHome;
#75 : ELeftArrow;
#77 : ERightArrow;
#79 : EEnd;
#82 : EInsMode;
#83 : EDelete;
#15,
#115 : ECtrlLeftArrow;
#116 : ECtrlRightArrow;
#117 : ECtrlEnd;
End;
End;
{~~~~~~~~~~~~~~~~~~~~~~~~~~~~}
Procedure ProcessNormalKey;
Var
i : integer;
ctrl : boolean;
begin
For i := 1 to Length(nEC.Special) Do Begin
If ch = nEC.Special[i] Then Begin
SEditExit:=True;
Exit;
End;
End;
ctrl := false;
case ch of
#0..#15,
#17..#31 : Begin
nEC.ClearMode := False;
Case ch of
#1 : EHome;
#5 : EEnd;
#2 : ELeftArrow;
#6 : ERightArrow;
#19 : ECtrlLeftArrow;
#4 : ECtrlRightArrow;
#7 : EDelete;
#9 : EInsMode;
#8 : EBackSpace;
#10 : ch := #13;
#13 : Begin
pres := nCheckPxPicture(es,nEC.Picture,pidx);
If pres <> 2 Then Begin
Sound(1000);
Delay(50);
NoSound;
ch := #255;
End;
End;
#27 : If KeyPressed Then Begin
{ covers up a Linux peculiarity where the next }
{ character typed bleeds through with esc/1..9 }
nGotoXY(win,prvx,prvy);
WriteString;
ch := ReadKey;
{ make it a function key }
If ch in ['1'..'9'] Then
ch := Char(Ord(ch)+10)
Else ch := #27;
SEditExit := true;
End;
End;
Exit;
End;
#16 : Begin
{ embed control characters in the string }
ch := UpCase(ReadKey);
If ch in ['@','2','A'..'Z'] Then Begin
ctrl := true;
If ch = '2' Then ch := '@';
ch := Char(Ord(ch)-64);
End;
End;
#127 : Begin nEC.ClearMode := False;ETurboBackSpace;Exit;End;
end;
CheckForWriteChar(ctrl);
ch := #0;
end;
{-----------------------------------------------------------------------
Map a keystroke to another character, normal or extended.
The maps are 4 character strings interpreted as 2 sets of character
pairs that represent the following:
1st char - If it is #0 then it is an extended char. Use the 2nd
character to identify.
2nd char - Only used if 1st char is #0.
The first pair of the string is the actual key pressed.
The second pair is what that key should be become.
#0#59 = F1, extended key
#59#0 = ; , normal key
So a map of #0#59#59#0 maps the F1 key to the ; key,
and #0#59#0#60 maps the F1 key to the F2 key,
and #0#59#0#0 maps the F1 key to a null.
Examples:
#0#59#0#60 = map F1 to F2
#1#0#0#59 = map ^A to F1
#0#59#1#0 = map F1 to ^A
#0#59#0#0 = map F1 to ^@ (null)
#0#0#0#59 = map ^@ to F1
#97#0#65#0 = map a to A
}
Procedure MapKey(var ch : char;var eflag : boolean);
Var
i : integer;
s2 : string[2];
s4 : string[4];
Begin
{ look for a character map assignment }
i := 0;
s4 := #0#0#0#0;
Case eflag of
true : s2 := #0+ch;
false : s2 := ch+#0;
End;
Repeat
inc(i);
Until (i > nMaxChMaps) or (pos(s2,nEC.ChMap[i]) = 1);
{ if found, then re-assign ch to the mapped key }
If i <= nMaxChMaps Then Begin
system.Move(nEC.ChMap[i,1],s4[1],Length(nEC.ChMap[i]));
s2 := Copy(s4,3,2);
eflag := (s2[1] = #0);
Case eflag of
true : ch := s2[2];
false : ch := s2[1];
End;
If ch = #0 Then eflag := false;
End;
End;
{============================================================================}
Begin
SEditExit := nEC.ExitMode;
AppendMode := nEC.AppendMode;
ZMode := z <> 0;
If CursPos > Length(es)+x Then
Index := Length(es)+1 { End Of String }
Else Index := CursPos+1-x; { Inside Of String }
If Not ZMode then z := x+length(es);
Newstring;
WriteString;
nGotoXY(win,CursPos,y);
Repeat
prvx := nWhereX(win); { save for ProcessNormalKey }
prvy := nWhereY(win);
If Not ZMode then z := x+length(es);
ch := ReadKey;
isextended := (ch = #0);
If isextended Then
ch := ReadKey;
MapKey(ch,isextended);
If isextended Then
ProcessSpecialKey
Else
ProcessNormalKey;
Until (ch In [#13,#27]) or SEditExit;
nEC.ClearMode := False;
NewString;
End;{ of nEdit }
{ nEdit using currently active window }
Function nEdit(x,y,att,z,CursPos:integer;
es:string;var ch : char) : string;
Begin
nEdit := nEdit(ActiveWn,x,y,att,z,CursPos,es,ch);
End;
{ overload for longint type }
Function nEdit(x,y,att,z,CursPos:integer;
es:longint;var ch : char) : longint;
Begin
nEdit := nEdit(ActiveWn,x,y,att,z,CursPos,es,ch);
End;
{ with pointer }
Function nEdit(win : pwindow; x,y,att,z,CursPos:integer;
es:LongInt;var ch : char) : LongInt;
Var
savpic,
ess : string;
esv,
err : longint;
Begin
Str(es:0,ess);
savpic := nEC.Picture;
If savpic = '' Then nEC.Picture := '[-]#*#';
ess := nEdit(win,x,y,att,z,CursPos,ess,ch);
nEC.Picture := savpic;
val(ess,esv,err);
nEdit := esv;
End;
{ overload for real type }
Function nEdit(x,y,att,z,CursPos:integer;
es:real;var ch : char) : real;
Begin
nEdit := nEdit(ActiveWn,x,y,att,z,CursPos,es,ch);
End;
{ with pointer }
Function nEdit(win : pwindow; x,y,att,z,CursPos:integer;
es:Real;var ch : char) : Real;
Var
savpic,
ess : string;
esv : real;
i,
err : Integer;
Begin
Str(es:0:12,ess);
While ess[Length(ess)] = '0' Do Delete(ess,Length(ess),1);
savpic := nEC.Picture;
If savpic = '' Then Begin
Case nDecFmt of
nUS : nEC.Picture := '[+,-]#*#[[.*#][{E,e}[+,-]#[#][#][#]]]';
nEURO : Begin
nEC.Picture := '[+,-]#*#[[;,*#][{E,e}[+,-]#[#][#][#]]]';
For i := 1 to Length(ess) Do
If ess[i] = '.' Then ess[i] := ',';
End;
End;
End;
ess := nEdit(win,x,y,att,z,CursPos,ess,ch);
nEC.Picture := savpic;
For i := 1 to Length(ess) Do If ess[i] = ',' Then ess[i] := '.';
val(ess,esv,err);
nEdit := esv;
End;
{ And now some sugar for Rainer Hantsch! }
{------------------------------------------------------------------------
This is a right justified number editor. As a digit is typed, the
existing number string gets pushed left and the new digit is appended.
If decimal columns are specified, then pressing <space> will enter the
decimal character (. or ,). A background string can be specified that
fills the empty spaces.
------------------------------------------------------------------------}
Function nEditNumber(
win : pwindow;
x, { edit field start column }
y, { edit field start row }
att, { edit field color attribute }
wid, { edit field width }
decm : integer; { number of decimal columns }
bgd : string; { background string -
if bgd = '', then no background
if bgd = a single character, then is used as the
background fill character.
if bgd length is longer than wid, then the entire
bgd string is used as the background.}
initv, { initial value }
minv, { range minimum value }
maxv : real; { range maximum value }
var esc : boolean { if Esc key pressed = true, else = false }
) : real;
Const
{ up to 12 decimal places }
decs : string = '[#][#][#][#][#][#][#][#][#][#][#][#]';
Var
r : real;
s,s1,s2 : string;
i,
e,
bc,
bx : integer;
ch : char;
fill : array [0..255] of char;
tmp_ec : tnEC;
Begin
tmp_ec := nEC;
nEC.ExitMode := true;
nEC.AppendMode := true;
nEC.ClrChMap(0);
nEC.AddChMap(#7#0#0+Char(nKeyDel));
nEC.AddChMap(#8#0#0+Char(nKeyDel));
If decm > (Length(decs) div 3) Then
decm := (Length(decs) div 3);
If decm >= wid Then decm := (wid - 1);
If decm > 0 Then Begin
nEC.Picture := '[-]*#[{.}'+Copy(decs,1,(decm*3))+']';
If nDecFmt = nEURO Then Begin
nEC.Picture[8] := ',';
Insert(';',nEC.Picture,8);
nEC.AddChMap('.'+#0+','+#0);
End;
End Else
nEC.Picture := '[-]*#';
If bgd = '' Then Begin
bgd := ' ';
bc := att;
End Else
bc := nEC.CtrlColor;
If Length(bgd) < wid Then Begin
FillChar(fill,wid,bgd[1]);
fill[wid] := #0;
bgd := StrPas(fill);
End;
bx := x;
If Length(bgd) > wid Then inc(x);
str(initv:wid:decm,s);
While s[1] = ' ' Do Delete(s,1,1);
If Pos('.',s) <> 0 Then
While s[Length(s)] = '0' Do Delete(s,Length(s),1);
If decm = 0 Then Delete(s,Pos('.',s),1);
If nDecFmt = nEURO Then For i := 1 to Length(s) Do
If s[i] = '.' Then s[i] := ',';
Repeat
nFWrite(win,bx,y,bc,bx+Length(bgd)-(x-bx),copy(bgd,1,wid-length(s)+(x-bx)));
If x > bx Then
nFWrite(win,x+wid,y,bc,0,copy(bgd,wid+2,length(bgd)));
s1 := nEdit(win,x+wid-Length(s),y,att,x+wid-1,x+wid-1,s,ch);
s2 := s1;
If nDecFmt = nEURO Then For i := 1 to Length(s2) Do
If s2[i] = ',' Then s2[i] := '.';
val(s2,r,e);
If (s1 = '') or ((e = 0) and (r >= minv) and (r <= maxv)) Then
s := s1
Else
If ch <> #27 then Begin
ch := #0;
Sound(1000);
Delay(50);
NoSound;
End;
nEC.AppendMode := Length(s) < wid;
Until ch in [#13,#27];
esc := (ch = #27);
nEditNumber := r;
nEC := tmp_ec;
End;
{ overload - real, no pointer }
Function nEditNumber(
x,y,att,wid,decm : integer;
bgd : string;
initv,
minv,
maxv : real;
var esc : boolean) : real;
Begin
nEditNumber := nEditNumber(ActiveWn,x,y,att,wid,decm,bgd,initv,minv,maxv,esc);
End;
{ overload for longint }
Function nEditNumber(
win : pwindow;
x,y,att,wid,decm : integer;
bgd : string;
initv,
minv,
maxv : longint;
var esc : boolean) : longint;
Var
r : real;
Begin
r := nEditNumber(win,x,y,att,wid,0,bgd,Real(initv),Real(minv),Real(maxv),esc);
nEditNumber := Trunc(r);
End;
{ overload - longint, no pointer }
Function nEditNumber(
x,y,att,wid,decm : integer;
bgd : string;
initv,
minv,
maxv : longint;
var esc : boolean) : longint;
Var
r : real;
Begin
r := nEditNumber(ActiveWn,x,y,att,wid,0,bgd,Real(initv),Real(minv),Real(maxv),esc);
nEditNumber := Trunc(r);
End;
{ More sugar for Rainer }
{------------------------------------------------------------------------
A date string editor.
------------------------------------------------------------------------}
Function nEditDate(
win : pwindow;
x, { edit field start column }
y, { edit field start row }
att : integer; { edit field color attribute }
init : string; { initial value }
var esc : boolean { if Esc key pressed = true, else = false }
) : string;
Const
wid = 10;
Var
s : string;
i : integer;
ch : char;
tmp_ec : tnEC;
Begin
tmp_ec := nEC;
nEC.InsMode := false;
nEC.ClearMode := false;
nEC.ExitMode := false;
nEC.AppendMode := false;
Case nDecFmt of
nUS : Begin
nEC.Picture := '{#,m,M}{#,m,M}/{#,d,D}{#,d,D}/{#,y,Y}{#,y,Y}{#,y,Y}{#,y,Y}';
s := 'mm/dd/yyyy';
End;
nEURO : Begin
nEC.Picture := '{#,d,D}{#,d,D}/{#,m,M}{#,m,M}/{#,y,Y}{#,y,Y}{#,y,Y}{#,y,Y}';
s := 'dd/mm/yyyy';
End;
End;
If nCheckPxPicture(init,nEC.Picture,i) <> 0 Then
system.move(init[1],s[1],Length(init));
nEC.AddChMap(#7#0#0+Char(nKeyLeft));
nEC.AddChMap(#8#0#0+Char(nKeyLeft));
nEC.AddChMap(#0+Char(nKeyDel)+#0+Char(nKeyLeft));
Repeat
s := nEdit(x,y,att,x+9,x,s,ch);
If ch = #13 Then Begin
For i := 1 to Length(s) Do
If s[i] in ['m','d','y'] Then ch := #0;
End;
Until ch in [#13,#27];
esc := (ch = #27);
nEditDate := s;
nEC := tmp_ec;
End;
{ overload - no pointer }
Function nEditDate(x,y,att : integer;initv : string;var esc : boolean) : string;
Begin
nEditDate := nEditDate(ActiveWn,x,y,att,initv,esc);
End;
{ A one-line procedural wrapper }
Procedure nMakeWindow(
var win : tnWindow;
x1,y1,
x2,y2,
ta,ba,ha : integer;
hasframe : boolean;
hdrpos : tnJustify;
hdrtxt : string);
Begin
win.init(x1,y1,x2,y2,ta,hasframe,ba);
If hdrtxt <> '' Then win.PutHeader(hdrtxt,ha,hdrpos);
End;
{----------------------- initialize the unit!------------------------- }
Begin
FillChar(_chmap,SizeOf(_chmap),#0);
nEC.Init(false,false,false,false,false,'','',15,_chmap);
{ load the color pairs array with color pair indices (0..63) }
For bg := 0 to 7 Do For fg := 0 to 7 do cp[bg,fg] := (bg*8)+fg;
{ initialize ncurses }
If StartCurses(ActiveWn) Then Begin
{ save pointer to ncurses stdscr }
nscreen := ActiveWn;
{ create the default full screen window object }
nStdScr.Init(1,1,MaxCols,MaxRows,7,false,0);
End Else
Halt;
{ crtassign }
nInit;
{ set the unit exit procedure }
ExitSave := ExitProc;
ExitProc := @nExit;
End. { of Unit nCrt }
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