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{
System dependent system messages for unix
Copyright (c) 2002 by Pierre Muller
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library 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. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
}
{ This file is still a dummy,
it should use ioctl to get information about resizing of windows }
uses
{$ifdef VER1_0}
linux;
{$else}
BaseUnix,termio;
{$endif}
Const
SystemEventActive : Boolean = false;
var
lastxsize,lastysize : longint;
procedure InitSystemMsg;
var
WinSize : TWinSize;
begin
If SystemEventActive then
exit;
{ Code to enable size tracking should go here }
PendingSystemHead:=@PendingSystemEvent;
PendingSystemTail:=@PendingSystemEvent;
PendingSystemEvents:=0;
FillChar(LastSystemEvent,sizeof(TSystemEvent),0);
FillChar(WinSize,sizeof(WinSize),0);
{$ifdef VER1_0}
ioctl(stdinputhandle,TIOCGWINSZ,@winsize);
{$else}
fpioctl(stdinputhandle,TIOCGWINSZ,@winsize);
{$endif}
LastXSize:=WinSize.ws_row;
LastYSize:=WinSize.ws_col;
If LastXSize=0 then
LastXSize:=80;
If LastYSize=0 then
LastYSize:=25;
SystemEventActive:=true;
end;
procedure DoneSystemMsg;
begin
if not SystemEventActive then
exit;
{ Code to disable size tracking should go here }
SystemEventActive:=false;
end;
procedure GetSystemEvent(var SystemEvent: TSystemEvent);
begin
if PendingSystemEvents=0 then
PollSystemEvent(SystemEvent);
if PendingSystemEvents=0 then
exit;
SystemEvent:=PendingSystemHead^;
inc(PendingSystemHead);
if longint(PendingSystemHead)=longint(@PendingSystemEvent)+sizeof(PendingSystemEvent) then
PendingSystemHead:=@PendingSystemEvent;
dec(PendingSystemEvents);
LastSystemEvent:=SystemEvent;
end;
function PollSystemEvent(var SystemEvent: TSystemEvent):boolean;
var
CloseState : word;
WinSize : TWinSize;
begin
SystemEvent.typ:=SysNothing;
if not SystemEventActive then
exit(false);
if PendingSystemEvents>0 then
begin
SystemEvent:=PendingSystemHead^;
PollSystemEvent:=true;
end
else
begin
FillChar(WinSize,sizeof(WinSize),0);
{$ifdef VER1_0}
ioctl(stdinputhandle,TIOCGWINSZ,@winsize);
{$else}
fpioctl(stdinputhandle,TIOCGWINSZ,@winsize);
{$endif}
if (winsize.ws_col<>0) and (winsize.ws_row<>0) and
((winsize.ws_row<>lastxsize) or (winsize.ws_col<>lastysize)) then
begin
SystemEvent.typ:=SysResize;
SystemEvent.x:=WinSize.ws_col;
SystemEvent.y:=WinSize.ws_row;
PutSystemEvent(SystemEvent);
LastXSize:=WinSize.ws_row;
LastYSize:=WinSize.ws_col;
PollSystemEvent:=true;
end
else
PollSystemEvent:=false;
end;
end;
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