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{
This file is part of the Free Pascal Integrated Development Environment
Copyright (c) 1998-2000 by Pierre Muller
Learn keys routines for the IDE
See the file COPYING.FPC, included in this distribution,
for details about the copyright.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
**********************************************************************}
unit fpkeys;
interface
uses
keyboard, Objects, Drivers, Dialogs, App,
FPViews, WViews;
procedure LearnKeysDialog;
Const
NumWantedKeys = 24;
WantedKeys : Array[1..NumWantedKeys] of word =
(kbF1,kbF2,kbF3,kbF4,
kbF5,kbF6,kbF7,kbF8,
kbF9,kbF10,kbF11,kbF12,
kbLeft,kbRight,kbUp,kbDown,
kbPgUp,kbPgDn,kbIns,kbDel,
kbEnd,kbHome,kbBack,kbShiftTab);
type
PKeyDialog = ^TKeyDialog;
TKeyDialog = object(TCenterDialog)
PSTL : Array [1..NumWantedKeys] of PLabel;
PL : Array [1..NumWantedKeys] of PInputLine;
KeyOK : Array [1..NumWantedKeys] of boolean;
PST,PST2 : PAdvancedStaticText;
Constructor Init(Const ATitle : String);
{Procedure HandleEvent(var E : TEvent);virtual;}
function Execute : Word;Virtual;
end;
Procedure LoadKeys(var S : TStream);
Procedure StoreKeys(var S : TStream);
Procedure SetKnownKeys;
implementation
uses
FVConsts,
WUtils;
{$ifndef NotUseTree}
function GetKey(Const St : String) : word;
var
AChar,AScan : byte;
begin
If FindSequence(St,AChar,Ascan) then
GetKey:=Ascan*$100+AChar
else
GetKey:=0;
end;
Procedure SetKey(Const St : String;key :word);
var
AChar,AScan : byte;
begin
AChar:=key and $ff;
AScan:=key shr 8;
AddSequence(St,AChar,Ascan);
end;
{$endif not NotUseTree}
Const
WantedKeysLabels : Array[1..NumWantedKeys] of String[5] =
('F1 ','F2 ','F3 ','F4 ',
'F5 ','F6 ','F7 ','F8 ',
'F9 ','F10 ','F11 ','F12 ',
'Left ','Right','Up ','Down ',
'PgUp ','PgDn ','Ins ','Del ',
'End ','Home ','Back ','ShTab');
var
KeyEscape : Array[1..NumWantedKeys] of String[10];
Procedure StoreKeys(var S : TStream);
var
i,index : longint;
l : byte;
begin
for i:=1 to NumWantedKeys do
if KeyEscape[i]<>'' then
begin
{ need temporary local var, because write has var argument }
index:=i;
S.Write(index,Sizeof(index));
l:=Length(KeyEscape[i]);
S.Write(l,sizeof(l));
S.Write(KeyEscape[i][1],l);
end;
end;
Procedure LoadKeys(var S : TStream);
var
i : longint;
l : byte;
begin
While S.GetPos<S.GetSize do
begin
S.Read(i,Sizeof(i));
S.Read(l,Sizeof(l));
S.Read(KeyEscape[i][1],l);
KeyEscape[i][0]:=chr(l);
end;
SetKnownKeys;
end;
Procedure SetKnownKeys;
var
i : longint;
begin
{$ifndef NotUseTree}
for i:=1 to NumWantedKeys do
if KeyEscape[i]<>'' then
SetKey(KeyEscape[i],WantedKeys[i]);
{$endif not NotUseTree}
end;
function NiceEscape(Const St : String) : String;
var
s : string;
i : longint;
begin
s:='';
for i:=1 to length(St) do
case ord(St[i]) of
1..26 : s:=s+'^'+chr(ord('A')-1+Ord(St[i]));
27 : s:=s+'Esc';
0,28..31,127..255 : s:=s+'"#'+IntToStr(ord(St[i]))+'"';
else
s:=s+St[i];
end;
NiceEscape:=s;
end;
constructor TKeyDialog.Init(Const ATitle : String);
var
St : String;
D : PCenterDialog;
R : TRect;
E : TEvent;
i,hight,key : longint;
begin
Hight:=(NumWantedKeys + 2) div 3;
R.Assign(0,0,63 + 4,Hight + 4);
Inherited Init(R,ATitle);
for i:=1 to NumWantedKeys do
begin
GetExtent(R);
R.Grow(-1,-1);
R.A.Y:=R.A.Y + ((i-1) mod Hight);
R.A.X:=R.A.X + 21 * ((i-1) div Hight);
R.B.Y:=R.A.Y+1;
R.B.X:=R.A.X + 10;
St:=WantedKeysLabels[i]+' key';
KeyOK[i]:=false;
New(PSTL[i],Init(R,St,nil));
Insert(PSTL[i]);
R.A.X:=R.B.X+1;
R.B.X:=R.B.X+11;
New(PL[i],Init(R,20));
St:=NiceEscape(KeyEscape[i]);
PL[i]^.SetData(St);
Insert(PL[i]);
PSTL[i]^.Link:=PL[i];
end;
GetExtent(R);
R.Grow(-1,-1);
Dec(R.B.Y);
R.A.Y:=R.B.Y-1;
New(PST,init(R,'Press all listed keys'));
Insert(PST);
GetExtent(R);
R.Grow(-1,-1);
R.A.Y:=R.B.Y-1;
New(PST2,init(R,'Alt prefix "'+NiceEscape(chr(AltPrefix))+'" Shift prefix = "'+
NiceEscape(chr(ShiftPrefix))+'" Ctrl prefix = "'+NiceEscape(chr(CtrlPrefix))+'"'));
Insert(PST2);
InsertButtons(@Self);
end;
function TKeyDialog.Execute : Word;
var
APL : PInputLine;
i,j : longint;
St : String;
E : TEvent;
OldKey : word;
keyfound : boolean;
begin
{$ifndef NotUseTree}
repeat
EndState := 0;
repeat
if TypeOf(Current^)=Typeof(TInputLine) then
APL:=PInputLine(Current)
else if TypeOf(Current^)=Typeof(TLabel) then
APL:=PInputLine(Plabel(Current)^.Link)
else
APL:=nil;
FillChar(E,SizeOf(E),#0);
if Keyboard.KeyPressed then
St:=RawReadString
else
begin
St:='';
Application^.GetEvent(E);
end;
if E.What= evNothing then
begin
if St<>'' then
begin
if GetKey(St)<>0 then
begin
E.What:=evKeyDown;
E.KeyCode:=GetKey(St);
end
else if St=#9 then
begin
E.What:=evKeyDown;
E.KeyCode:=kbTab;
end
else if St=#27 then
begin
E.What:=evKeyDown;
E.KeyCode:=kbEsc;
end
else if St=#13 then
begin
E.What:=evKeyDown;
E.KeyCode:=kbEnter;
end;
end;
end;
keyFound:=false;
if (E.What=evKeyDown) and not assigned(APL) then
begin
for i:=1 to NumWantedKeys do
if E.Keycode=WantedKeys[i] then
begin
DisposeStr(PSTL[i]^.Text);
PSTL[i]^.Text:=NewStr(WantedKeysLabels[i]+' OK ');
keyFound:=true;
keyOK[i]:=true;
KeyEscape[i]:=St;
St:=NiceEscape(St);
PL[i]^.SetData(St);
ClearEvent(E);
ReDraw;
end;
end;
if (St<>'') and not keyfound and
((E.What<>evKeyDown) or
((E.KeyCode<>kbTab) and (E.Keycode<>kbEnter) and (E.Keycode<>kbEsc))) then
begin
PST^.SetText('"'+NiceEscape(St)+'"');
if Assigned(APL) then
begin
j:=-1;
for i:=1 to NumWantedKeys do
if APL=PL[i] then
j:=i;
if (j>0) and (j<=NumWantedKeys) then
begin
OldKey:=GetKey(St);
if OldKey<>0 then
begin
for i:=1 to NumWantedKeys do
if (OldKey=WantedKeys[i]) and (i<>j) then
begin
If ConfirmBox('"'+St+'" is used for'+#13+
'key $'+hexstr(oldKey,4)+' '+WantedKeysLabels[i]+#13+
'Change it to '+WantedKeysLabels[j],nil,true)=cmYes then
begin
KeyEscape[i]:='';
PL[i]^.SetData(KeyEscape[i]);
end
else
begin
St:='';
end;
end;
end;
if St<>'' then
Begin
SetKey(St,WantedKeys[j]);
KeyEscape[j]:=St;
St:=NiceEscape(St);
APL^.SetData(St);
end;
end;
ClearEvent(E);
end;
end;
if (E.What<>evNothing) then
HandleEvent(E);
if E.What <> evNothing then EventError(E);
until EndState <> 0;
until Valid(EndState);
Execute := EndState;
{$else NotUseTree}
Execute:=cmCancel;
{$endif NotUseTree}
end;
procedure LearnKeysDialog;
var
D : PKeyDialog;
begin
{$ifdef NotUseTree}
NotImplemented;
{$else not NotUseTree}
New(D,Init('Learn keys'));
Application^.ExecuteDialog(D,nil);
{$endif not NotUseTree}
end;
end.
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