mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-04-26 22:43:52 +02:00
912 lines
19 KiB
ObjectPascal
912 lines
19 KiB
ObjectPascal
{
|
||
$Id$
|
||
|
||
This file is part of the Free Pascal run time library.
|
||
Copyright (c) 1999-2000 by Florian Klaempfl
|
||
member of the Free Pascal development team
|
||
|
||
Video unit for linux
|
||
|
||
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 Video;
|
||
|
||
interface
|
||
|
||
{$i videoh.inc}
|
||
|
||
implementation
|
||
|
||
uses
|
||
Unix, Strings, TermInfo;
|
||
|
||
{$i video.inc}
|
||
|
||
var
|
||
LastCursorType : byte;
|
||
TtyFd: Longint;
|
||
Console: Boolean;
|
||
OldVideoBuf: PVideoBuf;
|
||
{$ifdef logging}
|
||
f: file;
|
||
|
||
const
|
||
logstart: string = '';
|
||
nl: char = #10;
|
||
logend: string = #10#10;
|
||
{$endif logging}
|
||
|
||
{$ifdef I386}
|
||
{$ASMMODE ATT}
|
||
{$endif I386}
|
||
|
||
const
|
||
|
||
can_delete_term : boolean = false;
|
||
ACSIn : string = '';
|
||
ACSOut : string = '';
|
||
InACS : boolean =false;
|
||
|
||
function IsACS(var ch,ACSchar : char): boolean;
|
||
begin
|
||
IsACS:=false;
|
||
case ch of
|
||
#24, #30: { }
|
||
ch:='^';
|
||
#25, #31: { }
|
||
ch:='v';
|
||
#26, #16: {Never introduce a ctrl-Z ... }
|
||
ch:='>';
|
||
{#27,needed in Escape sequences} #17: {}
|
||
ch:='<';
|
||
#176, #177, #178: {°±²}
|
||
begin
|
||
IsACS:=true;
|
||
ACSChar:='a';
|
||
end;
|
||
#180, #181, #182, #185: {´µ¶¹}
|
||
begin
|
||
IsACS:=true;
|
||
ACSChar:='u';
|
||
end;
|
||
#183, #184, #187, #191: {·¸»¿}
|
||
begin
|
||
IsACS:=true;
|
||
ACSChar:='k';
|
||
end;
|
||
#188, #189, #190, #217: {¼½¾Ù}
|
||
begin
|
||
IsACS:=true;
|
||
ACSChar:='j';
|
||
end;
|
||
#192, #200, #211, #212: {ÀÈÓÔ}
|
||
begin
|
||
IsACS:=true;
|
||
ACSChar:='m';
|
||
end;
|
||
#193, #202, #207, #208: {ÁÊÏÐ}
|
||
begin
|
||
IsACS:=true;
|
||
ACSChar:='v';
|
||
end;
|
||
#194, #203, #209, #210: {ÂËÑÒ}
|
||
begin
|
||
IsACS:=true;
|
||
ACSChar:='w';
|
||
end;
|
||
#195, #198, #199, #204: {ÃÆÇÌ}
|
||
begin
|
||
IsACS:=true;
|
||
ACSChar:='t';
|
||
end;
|
||
#196, #205: {ÄÍ}
|
||
begin
|
||
IsACS:=true;
|
||
ACSChar:='q';
|
||
end;
|
||
#179, #186: {³º}
|
||
begin
|
||
IsACS:=true;
|
||
ACSChar:='x';
|
||
end;
|
||
#197, #206, #215, #216: {ÅÎ×Ø}
|
||
begin
|
||
IsACS:=true;
|
||
ACSChar:='n';
|
||
end;
|
||
#201, #213, #214, #218: {ÉÕÖÚ}
|
||
begin
|
||
IsACS:=true;
|
||
ACSChar:='l';
|
||
end;
|
||
#254: { þ }
|
||
begin
|
||
ch:='*';
|
||
end;
|
||
{ Shadows for Buttons }
|
||
#220: { Ü }
|
||
begin
|
||
IsACS:=true;
|
||
ACSChar:='a';
|
||
end;
|
||
#223: { ß }
|
||
begin
|
||
IsACS:=true;
|
||
ACSChar:='a';
|
||
end;
|
||
end;
|
||
end;
|
||
|
||
|
||
function SendEscapeSeqNdx(Ndx: Word) : boolean;
|
||
var
|
||
P,pdelay: PChar;
|
||
begin
|
||
SendEscapeSeqNdx:=false;
|
||
if not assigned(cur_term_Strings) then
|
||
exit{RunError(219)};
|
||
P:=cur_term_Strings^[Ndx];
|
||
if assigned(p) then
|
||
begin { Do not transmit the delays }
|
||
pdelay:=strpos(p,'$<');
|
||
if assigned(pdelay) then
|
||
pdelay^:=#0;
|
||
fdWrite(TTYFd, P^, StrLen(P));
|
||
SendEscapeSeqNdx:=true;
|
||
if assigned(pdelay) then
|
||
pdelay^:='$';
|
||
end;
|
||
end;
|
||
|
||
|
||
procedure SendEscapeSeq(const S: String);
|
||
begin
|
||
fdWrite(TTYFd, S[1], Length(S));
|
||
end;
|
||
|
||
|
||
Function IntStr(l:longint):string;
|
||
var
|
||
s : string;
|
||
begin
|
||
Str(l,s);
|
||
IntStr:=s;
|
||
end;
|
||
|
||
|
||
Function XY2Ansi(x,y,ox,oy:longint):String;
|
||
{
|
||
Returns a string with the escape sequences to go to X,Y on the screen
|
||
}
|
||
Begin
|
||
if y=oy then
|
||
begin
|
||
if x=ox then
|
||
begin
|
||
XY2Ansi:='';
|
||
exit;
|
||
end;
|
||
if x=1 then
|
||
begin
|
||
XY2Ansi:=#13;
|
||
exit;
|
||
end;
|
||
if x>ox then
|
||
begin
|
||
XY2Ansi:=#27'['+IntStr(x-ox)+'C';
|
||
exit;
|
||
end
|
||
else
|
||
begin
|
||
XY2Ansi:=#27'['+IntStr(ox-x)+'D';
|
||
exit;
|
||
end;
|
||
end;
|
||
if x=ox then
|
||
begin
|
||
if y>oy then
|
||
begin
|
||
XY2Ansi:=#27'['+IntStr(y-oy)+'B';
|
||
exit;
|
||
end
|
||
else
|
||
begin
|
||
XY2Ansi:=#27'['+IntStr(oy-y)+'A';
|
||
exit;
|
||
end;
|
||
end;
|
||
if (x=1) and (oy+1=y) then
|
||
XY2Ansi:=#13#10
|
||
else
|
||
XY2Ansi:=#27'['+IntStr(y)+';'+IntStr(x)+'H';
|
||
End;
|
||
|
||
|
||
|
||
const
|
||
AnsiTbl : string[8]='04261537';
|
||
Function Attr2Ansi(Attr,OAttr:longint):string;
|
||
{
|
||
Convert Attr to an Ansi String, the Optimal code is calculate
|
||
with use of the old OAttr
|
||
}
|
||
var
|
||
hstr : string[16];
|
||
OFg,OBg,Fg,Bg : longint;
|
||
|
||
procedure AddSep(ch:char);
|
||
begin
|
||
if length(hstr)>0 then
|
||
hstr:=hstr+';';
|
||
hstr:=hstr+ch;
|
||
end;
|
||
|
||
begin
|
||
if Attr=OAttr then
|
||
begin
|
||
Attr2Ansi:='';
|
||
exit;
|
||
end;
|
||
Hstr:='';
|
||
Fg:=Attr and $f;
|
||
Bg:=Attr shr 4;
|
||
OFg:=OAttr and $f;
|
||
OBg:=OAttr shr 4;
|
||
if (OFg<>7) or (Fg=7) or ((OFg>7) and (Fg<8)) or ((OBg>7) and (Bg<8)) then
|
||
begin
|
||
hstr:='0';
|
||
OFg:=7;
|
||
OBg:=0;
|
||
end;
|
||
if (Fg>7) and (OFg<8) then
|
||
begin
|
||
AddSep('1');
|
||
OFg:=OFg or 8;
|
||
end;
|
||
if (Bg and 8)<>(OBg and 8) then
|
||
begin
|
||
AddSep('5');
|
||
OBg:=OBg or 8;
|
||
end;
|
||
if (Fg<>OFg) then
|
||
begin
|
||
AddSep('3');
|
||
hstr:=hstr+AnsiTbl[(Fg and 7)+1];
|
||
end;
|
||
if (Bg<>OBg) then
|
||
begin
|
||
AddSep('4');
|
||
hstr:=hstr+AnsiTbl[(Bg and 7)+1];
|
||
end;
|
||
if hstr='0' then
|
||
hstr:='';
|
||
Attr2Ansi:=#27'['+hstr+'m';
|
||
end;
|
||
|
||
procedure TransformUsingACS(var st : string);
|
||
var
|
||
res : string;
|
||
i : longint;
|
||
ch,ACSch : char;
|
||
begin
|
||
res:='';
|
||
for i:=1 to length(st) do
|
||
begin
|
||
ch:=st[i];
|
||
if IsACS(ch,ACSch) then
|
||
begin
|
||
if not InACS then
|
||
begin
|
||
res:=res+ACSIn;
|
||
InACS:=true;
|
||
end;
|
||
res:=res+ACSch;
|
||
end
|
||
else
|
||
begin
|
||
if InACS then
|
||
begin
|
||
res:=res+ACSOut;
|
||
InACS:=false;
|
||
end;
|
||
res:=res+ch;
|
||
end;
|
||
end;
|
||
st:=res;
|
||
end;
|
||
|
||
|
||
procedure UpdateTTY(Force:boolean);
|
||
type
|
||
tchattr=packed record
|
||
{$ifdef ENDIAN_LITTLE}
|
||
ch : char;
|
||
attr : byte;
|
||
{$else}
|
||
attr : byte;
|
||
ch : char;
|
||
{$endif}
|
||
end;
|
||
var
|
||
outbuf : array[0..1023+255] of char;
|
||
chattr : tchattr;
|
||
skipped : boolean;
|
||
outptr,
|
||
spaces,
|
||
eol,
|
||
x,y,
|
||
LastX,LastY,
|
||
SpaceAttr,
|
||
LastAttr : longint;
|
||
p,pold : pvideocell;
|
||
|
||
procedure outdata(hstr:string);
|
||
begin
|
||
while (eol>0) do
|
||
begin
|
||
hstr:=#13#10+hstr;
|
||
dec(eol);
|
||
end;
|
||
if NoExtendedFrame and (ACSIn<>'') and (ACSOut<>'') then
|
||
TransformUsingACS(Hstr);
|
||
move(hstr[1],outbuf[outptr],length(hstr));
|
||
inc(outptr,length(hstr));
|
||
if outptr>=1024 then
|
||
begin
|
||
{$ifdef logging}
|
||
blockwrite(f,logstart[1],length(logstart));
|
||
blockwrite(f,nl,1);
|
||
blockwrite(f,outptr,sizeof(outptr));
|
||
blockwrite(f,nl,1);
|
||
blockwrite(f,outbuf,outptr);
|
||
blockwrite(f,nl,1);
|
||
{$endif logging}
|
||
fdWrite(TTYFd,outbuf,outptr);
|
||
outptr:=0;
|
||
end;
|
||
end;
|
||
|
||
procedure OutClr(c:byte);
|
||
begin
|
||
if c=LastAttr then
|
||
exit;
|
||
OutData(Attr2Ansi(c,LastAttr));
|
||
LastAttr:=c;
|
||
end;
|
||
|
||
procedure OutSpaces;
|
||
begin
|
||
if (Spaces=0) then
|
||
exit;
|
||
OutClr(SpaceAttr);
|
||
OutData(Space(Spaces));
|
||
LastX:=x;
|
||
LastY:=y;
|
||
Spaces:=0;
|
||
end;
|
||
|
||
begin
|
||
OutPtr:=0;
|
||
Eol:=0;
|
||
skipped:=true;
|
||
p:=PVideoCell(VideoBuf);
|
||
pold:=PVideoCell(OldVideoBuf);
|
||
{ init Attr and X,Y }
|
||
SendEscapeSeq(#27'[m'{#27'[H'});
|
||
LastAttr:=7;
|
||
LastX:=-1;
|
||
LastY:=-1;
|
||
for y:=1 to ScreenHeight do
|
||
begin
|
||
SpaceAttr:=0;
|
||
Spaces:=0;
|
||
for x:=1 to ScreenWidth do
|
||
begin
|
||
if (not force) and (p^=pold^) then
|
||
begin
|
||
if (Spaces>0) then
|
||
OutSpaces;
|
||
skipped:=true;
|
||
end
|
||
else
|
||
begin
|
||
if skipped then
|
||
begin
|
||
OutData(XY2Ansi(x,y,LastX,LastY));
|
||
LastX:=x;
|
||
LastY:=y;
|
||
skipped:=false;
|
||
end;
|
||
chattr:=tchattr(p^);
|
||
if chattr.ch in [#0,#255] then
|
||
chattr.ch:=' ';
|
||
if chattr.ch=' ' then
|
||
begin
|
||
if Spaces=0 then
|
||
SpaceAttr:=chattr.Attr;
|
||
if (chattr.attr and $f0)=(spaceattr and $f0) then
|
||
chattr.Attr:=SpaceAttr
|
||
else
|
||
begin
|
||
OutSpaces;
|
||
SpaceAttr:=chattr.Attr;
|
||
end;
|
||
inc(Spaces);
|
||
end
|
||
else
|
||
begin
|
||
if (Spaces>0) then
|
||
OutSpaces;
|
||
if ord(chattr.ch)<32 then
|
||
begin
|
||
Chattr.Attr:= $ff xor Chattr.Attr;
|
||
ChAttr.ch:= chr(ord(chattr.ch)+ord('A')-1);
|
||
end;
|
||
if LastAttr<>chattr.Attr then
|
||
OutClr(chattr.Attr);
|
||
OutData(chattr.ch);
|
||
LastX:=x+1;
|
||
LastY:=y;
|
||
end;
|
||
p^:=tvideocell(chattr);
|
||
end;
|
||
inc(p);
|
||
inc(pold);
|
||
end;
|
||
if (Spaces>0) then
|
||
OutSpaces;
|
||
if force then
|
||
inc(eol)
|
||
else
|
||
skipped:=true;
|
||
end;
|
||
eol:=0;
|
||
OutData(XY2Ansi(CursorX,CursorY,LastX,LastY));
|
||
{$ifdef logging}
|
||
blockwrite(f,logstart[1],length(logstart));
|
||
blockwrite(f,nl,1);
|
||
blockwrite(f,outptr,sizeof(outptr));
|
||
blockwrite(f,nl,1);
|
||
blockwrite(f,outbuf,outptr);
|
||
blockwrite(f,nl,1);
|
||
{$endif logging}
|
||
fdWrite(TTYFd,outbuf,outptr);
|
||
if InACS then
|
||
SendEscapeSeqNdx(exit_alt_charset_mode);
|
||
end;
|
||
|
||
var
|
||
InitialVideoTio, preInitVideoTio, postInitVideoTio: Unix.termios;
|
||
inputRaw, outputRaw: boolean;
|
||
|
||
procedure saveRawSettings(const tio: Unix.termios);
|
||
Begin
|
||
with tio do
|
||
begin
|
||
inputRaw :=
|
||
((c_iflag and (IGNBRK or BRKINT or PARMRK or ISTRIP or
|
||
INLCR or IGNCR or ICRNL or IXON)) = 0) and
|
||
((c_lflag and (ECHO or ECHONL or ICANON or ISIG or IEXTEN)) = 0);
|
||
outPutRaw :=
|
||
((c_oflag and OPOST) = 0) and
|
||
((c_cflag and (CSIZE or PARENB)) = 0) and
|
||
((c_cflag and CS8) <> 0);
|
||
end;
|
||
end;
|
||
|
||
procedure restoreRawSettings(tio: Unix.termios);
|
||
begin
|
||
with tio do
|
||
begin
|
||
if inputRaw then
|
||
begin
|
||
c_iflag := c_iflag and (not (IGNBRK or BRKINT or PARMRK or ISTRIP or
|
||
INLCR or IGNCR or ICRNL or IXON));
|
||
c_lflag := c_lflag and
|
||
(not (ECHO or ECHONL or ICANON or ISIG or IEXTEN));
|
||
end;
|
||
if outPutRaw then
|
||
begin
|
||
c_oflag := c_oflag and not(OPOST);
|
||
c_cflag := c_cflag and not(CSIZE or PARENB) or CS8;
|
||
end;
|
||
end;
|
||
TCSetAttr(1,TCSANOW,tio);
|
||
end;
|
||
|
||
procedure TargetEntry;
|
||
begin
|
||
TCGetAttr(1,InitialVideoTio);
|
||
end;
|
||
|
||
procedure TargetExit;
|
||
begin
|
||
TCSetAttr(1,TCSANOW,InitialVideoTio);
|
||
end;
|
||
|
||
procedure prepareInitVideo;
|
||
begin
|
||
TCGetAttr(1,preInitVideoTio);
|
||
saveRawSettings(preInitVideoTio);
|
||
end;
|
||
|
||
procedure videoInitDone;
|
||
begin
|
||
TCGetAttr(1,postInitVideoTio);
|
||
restoreRawSettings(postInitVideoTio);
|
||
end;
|
||
|
||
procedure prepareDoneVideo;
|
||
var
|
||
tio: Unix.termios;
|
||
begin
|
||
TCGetAttr(1,tio);
|
||
saveRawSettings(tio);
|
||
TCSetAttr(1,TCSANOW,postInitVideoTio);
|
||
end;
|
||
|
||
procedure doneVideoDone;
|
||
begin
|
||
restoreRawSettings(preInitVideoTio);
|
||
end;
|
||
|
||
procedure SysInitVideo;
|
||
const
|
||
fontstr : string[3]=#27'(K';
|
||
var
|
||
ThisTTY: String[30];
|
||
FName: String;
|
||
WS: packed record
|
||
ws_row, ws_col, ws_xpixel, ws_ypixel: Word;
|
||
end;
|
||
Err: Longint;
|
||
prev_term : TerminalCommon_ptr1;
|
||
begin
|
||
{$ifndef CPUI386}
|
||
LowAscii:=false;
|
||
{$endif CPUI386}
|
||
if VideoBufSize<>0 then
|
||
begin
|
||
clearscreen;
|
||
if Console then
|
||
SetCursorPos(1,1)
|
||
else
|
||
begin
|
||
if not SendEscapeSeqNdx(cursor_home) then
|
||
SendEscapeSeq(#27'[H');
|
||
end;
|
||
exit;
|
||
end;
|
||
{ check for tty }
|
||
ThisTTY:=TTYName(stdinputhandle);
|
||
if IsATTY(stdinputhandle) then
|
||
begin
|
||
{ save current terminal characteristics and remove rawness }
|
||
prepareInitVideo;
|
||
{ write code to set a correct font }
|
||
fdWrite(stdoutputhandle,fontstr[1],length(fontstr));
|
||
{ running on a tty, find out whether locally or remotely }
|
||
if (Copy(ThisTTY, 1, 8) = '/dev/tty') and
|
||
(ThisTTY[9] >= '0') and (ThisTTY[9] <= '9') then
|
||
begin
|
||
{ running on the console }
|
||
FName:='/dev/vcsa' + ThisTTY[9];
|
||
TTYFd:=fdOpen(FName, Octal(666), Open_RdWr); { open console }
|
||
end
|
||
else
|
||
TTYFd:=-1;
|
||
if TTYFd<>-1 then
|
||
Console:=true
|
||
else
|
||
begin
|
||
{ running on a remote terminal, no error with /dev/vcsa }
|
||
Console:=False;
|
||
LowAscii:=false;
|
||
TTYFd:=stdoutputhandle;
|
||
end;
|
||
ioctl(stdinputhandle, TIOCGWINSZ, @WS);
|
||
if WS.ws_Col=0 then
|
||
WS.ws_Col:=80;
|
||
if WS.ws_Row=0 then
|
||
WS.ws_Row:=25;
|
||
ScreenWidth:=WS.ws_Col;
|
||
{ TDrawBuffer only has FVMaxWidth elements
|
||
larger values lead to crashes }
|
||
if ScreenWidth> FVMaxWidth then
|
||
ScreenWidth:=FVMaxWidth;
|
||
ScreenHeight:=WS.ws_Row;
|
||
CursorX:=1;
|
||
CursorY:=1;
|
||
ScreenColor:=True;
|
||
{ allocate pmode memory buffer }
|
||
VideoBufSize:=ScreenWidth*ScreenHeight*2;
|
||
GetMem(VideoBuf,VideoBufSize);
|
||
GetMem(OldVideoBuf,VideoBufSize);
|
||
{ Start with a clear screen }
|
||
if not Console then
|
||
begin
|
||
prev_term:=cur_term;
|
||
setupterm(nil, stdoutputhandle, err);
|
||
can_delete_term:=assigned(prev_term) and (prev_term<>cur_term);
|
||
SendEscapeSeqNdx(cursor_home);
|
||
SendEscapeSeqNdx(cursor_normal);
|
||
SendEscapeSeqNdx(cursor_visible);
|
||
SendEscapeSeqNdx(enter_ca_mode);
|
||
SetCursorType(crUnderLine);
|
||
end
|
||
else if not assigned(cur_term) then
|
||
begin
|
||
setupterm(nil, stdoutputhandle, err);
|
||
can_delete_term:=false;
|
||
end;
|
||
if assigned(cur_term_Strings) then
|
||
begin
|
||
ACSIn:=StrPas(cur_term_Strings^[enter_alt_charset_mode]);
|
||
ACSOut:=StrPas(cur_term_Strings^[exit_alt_charset_mode]);
|
||
if (ACSIn<>'') and (ACSOut<>'') then
|
||
SendEscapeSeqNdx(ena_acs);
|
||
if pos('$<',ACSIn)>0 then
|
||
ACSIn:=Copy(ACSIn,1,Pos('$<',ACSIn)-1);
|
||
if pos('$<',ACSOut)>0 then
|
||
ACSOut:=Copy(ACSOut,1,Pos('$<',ACSOut)-1);
|
||
end
|
||
else
|
||
begin
|
||
ACSIn:='';
|
||
ACSOut:='';
|
||
end;
|
||
ClearScreen;
|
||
{$ifdef logging}
|
||
assign(f,'video.log');
|
||
rewrite(f,1);
|
||
{$endif logging}
|
||
{ save new terminal characteristics and possible restore rawness }
|
||
videoInitDone;
|
||
end
|
||
else
|
||
ErrorCode:=errVioInit; { not a TTY }
|
||
end;
|
||
|
||
procedure SysDoneVideo;
|
||
begin
|
||
if VideoBufSize=0 then
|
||
exit;
|
||
prepareDoneVideo;
|
||
ClearScreen;
|
||
if Console then
|
||
SetCursorPos(1,1)
|
||
else
|
||
begin
|
||
SendEscapeSeqNdx(exit_ca_mode);
|
||
SendEscapeSeqNdx(cursor_home);
|
||
SendEscapeSeqNdx(cursor_normal);
|
||
SendEscapeSeqNdx(cursor_visible);
|
||
SetCursorType(crUnderLine);
|
||
SendEscapeSeq(#27'[H');
|
||
end;
|
||
FreeMem(VideoBuf,VideoBufSize);
|
||
FreeMem(OldVideoBuf,VideoBufSize);
|
||
VideoBufSize:=0;
|
||
ACSIn:='';
|
||
ACSOut:='';
|
||
doneVideoDone;
|
||
if can_delete_term then
|
||
begin
|
||
del_curterm(cur_term);
|
||
can_delete_term:=false;
|
||
end;
|
||
{$ifdef logging}
|
||
close(f);
|
||
{$endif logging}
|
||
end;
|
||
|
||
|
||
procedure SysClearScreen;
|
||
begin
|
||
FillWord(VideoBuf^,VideoBufSize shr 1,$0720);
|
||
if Console then
|
||
UpdateScreen(true)
|
||
else
|
||
begin
|
||
SendEscapeSeq(#27'[0m');
|
||
SendEscapeSeqNdx(clear_screen);
|
||
end;
|
||
end;
|
||
|
||
|
||
procedure SysUpdateScreen(Force: Boolean);
|
||
var
|
||
DoUpdate : boolean;
|
||
i : longint;
|
||
p1,p2 : plongint;
|
||
begin
|
||
if not force then
|
||
begin
|
||
{$ifdef i386}
|
||
asm
|
||
movl VideoBuf,%esi
|
||
movl OldVideoBuf,%edi
|
||
movl VideoBufSize,%ecx
|
||
shrl $2,%ecx
|
||
repe
|
||
cmpsl
|
||
setne DoUpdate
|
||
end;
|
||
{$else not i386}
|
||
p1:=plongint(VideoBuf);
|
||
p2:=plongint(OldVideoBuf);
|
||
for i:=0 to VideoBufSize div 2 do
|
||
if (p1^<>p2^) then
|
||
begin
|
||
DoUpdate:=true;
|
||
break;
|
||
end
|
||
else
|
||
begin
|
||
{ Inc does add sizeof(longint) to both pointer values }
|
||
inc(p1);
|
||
inc(p2);
|
||
end;
|
||
{$endif not i386}
|
||
end
|
||
else
|
||
DoUpdate:=true;
|
||
if not DoUpdate then
|
||
exit;
|
||
if Console then
|
||
begin
|
||
fdSeek(TTYFd, 4, Seek_Set);
|
||
fdWrite(TTYFd, VideoBuf^,VideoBufSize);
|
||
end
|
||
else
|
||
begin
|
||
UpdateTTY(force);
|
||
end;
|
||
Move(VideoBuf^, OldVideoBuf^, VideoBufSize);
|
||
end;
|
||
|
||
|
||
function SysGetCapabilities: Word;
|
||
begin
|
||
{ about cpColor... we should check the terminfo database... }
|
||
SysGetCapabilities:=cpUnderLine + cpBlink + cpColor;
|
||
end;
|
||
|
||
|
||
procedure SysSetCursorPos(NewCursorX, NewCursorY: Word);
|
||
var
|
||
Pos : array [1..2] of Byte;
|
||
begin
|
||
if Console then
|
||
begin
|
||
fdSeek(TTYFd, 2, Seek_Set);
|
||
Pos[1]:=NewCursorX;
|
||
Pos[2]:=NewCursorY;
|
||
fdWrite(TTYFd, Pos, 2);
|
||
end
|
||
else
|
||
begin
|
||
{ newcursorx,y is 0 based ! }
|
||
SendEscapeSeq(XY2Ansi(NewCursorX+1,NewCursorY+1,0,0));
|
||
end;
|
||
CursorX:=NewCursorX+1;
|
||
CursorY:=NewCursorY+1;
|
||
end;
|
||
|
||
|
||
function SysGetCursorType: Word;
|
||
begin
|
||
SysGetCursorType:=LastCursorType;
|
||
end;
|
||
|
||
|
||
procedure SysSetCursorType(NewType: Word);
|
||
begin
|
||
LastCursorType:=NewType;
|
||
case NewType of
|
||
crBlock :
|
||
Begin
|
||
If not SendEscapeSeqNdx(cursor_visible) then
|
||
SendEscapeSeq(#27'[?17;0;64c');
|
||
End;
|
||
crHidden :
|
||
Begin
|
||
If not SendEscapeSeqNdx(cursor_invisible) then
|
||
SendEscapeSeq(#27'[?1c');
|
||
End;
|
||
else
|
||
begin
|
||
If not SendEscapeSeqNdx(cursor_normal) then
|
||
SendEscapeSeq(#27'[?2c');
|
||
end;
|
||
end;
|
||
end;
|
||
|
||
|
||
function DefaultVideoModeSelector(const VideoMode: TVideoMode; Params: Longint): Boolean;
|
||
begin
|
||
DefaultVideoModeSelector:=false;
|
||
end;
|
||
|
||
|
||
procedure RegisterVideoModes;
|
||
begin
|
||
end;
|
||
|
||
Const
|
||
SysVideoDriver : TVideoDriver = (
|
||
InitDriver : @SysInitVideo;
|
||
DoneDriver : @SysDoneVideo;
|
||
UpdateScreen : @SysUpdateScreen;
|
||
ClearScreen : @SysClearScreen;
|
||
SetVideoMode : Nil;
|
||
HasVideoMode : Nil;
|
||
SetCursorPos : @SysSetCursorPos;
|
||
GetCursorType : @SysGetCursorType;
|
||
SetCursorType : @SysSetCursorType;
|
||
GetCapabilities : @SysGetCapabilities
|
||
);
|
||
|
||
initialization
|
||
SetVideoDriver(SysVideoDriver);
|
||
RegisterVideoModes;
|
||
|
||
finalization
|
||
UnRegisterVideoModes;
|
||
end.
|
||
{
|
||
$Log$
|
||
Revision 1.8 2001-09-21 19:50:19 michael
|
||
+ Merged driver support from fixbranch
|
||
|
||
Revision 1.7 2001/08/30 20:55:08 peter
|
||
* v10 merges
|
||
|
||
Revision 1.6 2001/08/01 21:42:05 peter
|
||
* m68k warning fix (merged)
|
||
|
||
Revision 1.5 2001/07/31 19:33:46 peter
|
||
* make tchattr record endian dependant (merged)
|
||
|
||
Revision 1.4 2001/07/30 21:38:55 peter
|
||
* m68k updates merged
|
||
|
||
Revision 1.2.2.8 2001/09/21 18:42:09 michael
|
||
+ Implemented support for custom video drivers.
|
||
|
||
Revision 1.2.2.7 2001/08/28 12:23:15 pierre
|
||
* set skipped to true if changing line and force is false to avoid problems if terminal reports less columns as available
|
||
|
||
Revision 1.2.2.6 2001/08/01 10:50:59 pierre
|
||
* avoid warning for m68k cpu
|
||
|
||
Revision 1.2.2.5 2001/07/30 23:34:51 pierre
|
||
* make tchattr record endian dependant
|
||
|
||
Revision 1.2.2.4 2001/07/29 20:25:18 pierre
|
||
* fix wrong deref in generic compare code
|
||
|
||
Revision 1.2.2.3 2001/07/13 14:49:08 pierre
|
||
+ implement videobuf comparaison for non i386 cpus
|
||
|
||
Revision 1.2.2.2 2001/01/30 22:23:44 peter
|
||
* unix back to linux
|
||
|
||
Revision 1.3 2001/07/13 22:05:09 peter
|
||
* cygwin updates
|
||
|
||
Revision 1.2 2001/01/21 20:21:41 marco
|
||
* Rename fest II. Rtl OK
|
||
|
||
Revision 1.1 2001/01/13 11:03:58 peter
|
||
* API 2 RTL commit
|
||
|
||
}
|
||
|