mirror of
https://gitlab.com/freepascal.org/fpc/source.git
synced 2025-11-04 07:59:34 +01:00
359 lines
8.5 KiB
ObjectPascal
359 lines
8.5 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 Win32
|
|
|
|
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
|
|
|
|
{$i videoh.inc}
|
|
|
|
implementation
|
|
|
|
uses
|
|
windows,dos;
|
|
|
|
{$i video.inc}
|
|
|
|
var
|
|
OldVideoBuf : PVideoBuf;
|
|
ConsoleInfo : TConsoleScreenBufferInfo;
|
|
ConsoleCursorInfo : TConsoleCursorInfo;
|
|
MaxVideoBufSize : DWord;
|
|
|
|
procedure InitVideo;
|
|
begin
|
|
ScreenColor:=true;
|
|
GetConsoleScreenBufferInfo(TextRec(Output).Handle, ConsoleInfo);
|
|
GetConsoleCursorInfo(TextRec(Output).Handle, ConsoleCursorInfo);
|
|
|
|
with ConsoleInfo.srWindow do
|
|
begin
|
|
ScreenWidth:=right-left+1;
|
|
ScreenHeight:=bottom-top+1;
|
|
end;
|
|
|
|
{ srWindow is sometimes bigger then dwMaximumWindowSize
|
|
this led to wrong ScreenWidth and ScreenHeight values PM }
|
|
{ damned: its also sometimes less !! PM }
|
|
with ConsoleInfo.dwMaximumWindowSize do
|
|
begin
|
|
{if ScreenWidth>X then}
|
|
ScreenWidth:=X;
|
|
{if ScreenHeight>Y then}
|
|
ScreenHeight:=Y;
|
|
end;
|
|
|
|
{ TDrawBuffer only has FVMaxWidth elements
|
|
larger values lead to crashes }
|
|
if ScreenWidth> FVMaxWidth then
|
|
ScreenWidth:=FVMaxWidth;
|
|
|
|
CursorX:=ConsoleInfo.dwCursorPosition.x;
|
|
CursorY:=ConsoleInfo.dwCursorPosition.y;
|
|
if not ConsoleCursorInfo.bvisible then
|
|
CursorLines:=0
|
|
else
|
|
CursorLines:=ConsoleCursorInfo.dwSize;
|
|
|
|
{ allocate back buffer }
|
|
MaxVideoBufSize:= ScreenWidth * ScreenHeight * 2;
|
|
VideoBufSize:=ScreenWidth*ScreenHeight*2;
|
|
|
|
GetMem(VideoBuf,MaxVideoBufSize);
|
|
GetMem(OldVideoBuf,MaxVideoBufSize);
|
|
|
|
{ClearScreen; not needed PM }
|
|
end;
|
|
|
|
|
|
procedure DoneVideo;
|
|
begin
|
|
{ ClearScreen; also not needed PM }
|
|
SetCursorType(crUnderLine);
|
|
{ SetCursorPos(0,0); also not needed PM }
|
|
FreeMem(VideoBuf,MaxVideoBufSize);
|
|
FreeMem(OldVideoBuf,MaxVideoBufSize);
|
|
VideoBufSize:=0;
|
|
end;
|
|
|
|
|
|
function GetCapabilities: Word;
|
|
begin
|
|
GetCapabilities:=cpColor or cpChangeCursor;
|
|
end;
|
|
|
|
|
|
procedure SetCursorPos(NewCursorX, NewCursorY: Word);
|
|
var
|
|
pos : COORD;
|
|
begin
|
|
pos.x:=NewCursorX;
|
|
pos.y:=NewCursorY;
|
|
SetConsoleCursorPosition(TextRec(Output).Handle,pos);
|
|
CursorX:=pos.x;
|
|
CursorY:=pos.y;
|
|
end;
|
|
|
|
|
|
function GetCursorType: Word;
|
|
begin
|
|
GetConsoleCursorInfo(TextRec(Output).Handle,ConsoleCursorInfo);
|
|
if not ConsoleCursorInfo.bvisible then
|
|
GetCursorType:=crHidden
|
|
else
|
|
case ConsoleCursorInfo.dwSize of
|
|
1..30:
|
|
GetCursorType:=crUnderline;
|
|
31..70:
|
|
GetCursorType:=crHalfBlock;
|
|
71..100:
|
|
GetCursorType:=crBlock;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure SetCursorType(NewType: Word);
|
|
begin
|
|
GetConsoleCursorInfo(TextRec(Output).Handle,ConsoleCursorInfo);
|
|
if newType=crHidden then
|
|
ConsoleCursorInfo.bvisible:=false
|
|
else
|
|
begin
|
|
ConsoleCursorInfo.bvisible:=true;
|
|
case NewType of
|
|
crUnderline:
|
|
ConsoleCursorInfo.dwSize:=10;
|
|
|
|
crHalfBlock:
|
|
ConsoleCursorInfo.dwSize:=50;
|
|
|
|
crBlock:
|
|
ConsoleCursorInfo.dwSize:=99;
|
|
end
|
|
end;
|
|
SetConsoleCursorInfo(TextRec(Output).Handle,ConsoleCursorInfo);
|
|
end;
|
|
|
|
|
|
function DefaultVideoModeSelector(const VideoMode: TVideoMode; Params: Longint): Boolean;
|
|
begin
|
|
end;
|
|
|
|
|
|
procedure ClearScreen;
|
|
begin
|
|
FillWord(VideoBuf^,VideoBufSize div 2,$0720);
|
|
UpdateScreen(true);
|
|
end;
|
|
|
|
|
|
{$IFDEF FPC}
|
|
function WriteConsoleOutput(hConsoleOutput:HANDLE; lpBuffer:pointer; dwBufferSize:COORD; dwBufferCoord:COORD;
|
|
var lpWriteRegion:SMALL_RECT):WINBOOL; external 'kernel32' name 'WriteConsoleOutputA';
|
|
{$ENDIF}
|
|
|
|
procedure UpdateScreen(Force: Boolean);
|
|
type TmpRec = Array[0..(1024*32) - 1] of TCharInfo;
|
|
|
|
type WordRec = record
|
|
One, Two: Byte;
|
|
end; { wordrec }
|
|
|
|
var
|
|
BufSize,
|
|
BufCoord : COORD;
|
|
WriteRegion : SMALL_RECT;
|
|
LineBuf : ^TmpRec;
|
|
BufCounter : Longint;
|
|
LineCounter,
|
|
ColCounter : Longint;
|
|
smallforce : boolean;
|
|
{
|
|
begin
|
|
if LockUpdateScreen<>0 then
|
|
exit;
|
|
if not force then
|
|
begin
|
|
asm
|
|
movl VideoBuf,%esi
|
|
movl OldVideoBuf,%edi
|
|
movl VideoBufSize,%ecx
|
|
shrl $2,%ecx
|
|
repe
|
|
cmpsl
|
|
setne force
|
|
end;
|
|
end;
|
|
if Force then
|
|
begin
|
|
BufSize.X := ScreenWidth;
|
|
BufSize.Y := ScreenHeight;
|
|
|
|
BufCoord.X := 0;
|
|
BufCoord.Y := 0;
|
|
with WriteRegion do
|
|
begin
|
|
Top :=0;
|
|
Left :=0;
|
|
Bottom := ScreenHeight-1;
|
|
Right := ScreenWidth-1;
|
|
end;
|
|
New(LineBuf);
|
|
BufCounter := 0;
|
|
|
|
for LineCounter := 1 to ScreenHeight do
|
|
begin
|
|
for ColCounter := 1 to ScreenWidth do
|
|
begin
|
|
LineBuf^[BufCounter].UniCodeChar := WordRec(VideoBuf^[BufCounter]).One;
|
|
LineBuf^[BufCounter].Attributes := WordRec(VideoBuf^[BufCounter]).Two;
|
|
|
|
Inc(BufCounter);
|
|
end; { for }
|
|
end; { for }
|
|
|
|
WriteConsoleOutput(TextRec(Output).Handle, LineBuf, BufSize, BufCoord, WriteRegion);
|
|
Dispose(LineBuf);
|
|
|
|
move(VideoBuf^,OldVideoBuf^,VideoBufSize);
|
|
end;
|
|
end;
|
|
}
|
|
var
|
|
x1,y1,x2,y2 : longint;
|
|
|
|
begin
|
|
if LockUpdateScreen<>0 then
|
|
exit;
|
|
if force then
|
|
smallforce:=true
|
|
else
|
|
begin
|
|
asm
|
|
movl VideoBuf,%esi
|
|
movl OldVideoBuf,%edi
|
|
movl VideoBufSize,%ecx
|
|
shrl $2,%ecx
|
|
repe
|
|
cmpsl
|
|
orl %ecx,%ecx
|
|
jz .Lno_update
|
|
movb $1,smallforce
|
|
.Lno_update:
|
|
end;
|
|
end;
|
|
if SmallForce then
|
|
begin
|
|
BufSize.X := ScreenWidth;
|
|
BufSize.Y := ScreenHeight;
|
|
|
|
BufCoord.X := 0;
|
|
BufCoord.Y := 0;
|
|
with WriteRegion do
|
|
begin
|
|
Top :=0;
|
|
Left :=0;
|
|
Bottom := ScreenHeight-1;
|
|
Right := ScreenWidth-1;
|
|
end;
|
|
New(LineBuf);
|
|
BufCounter := 0;
|
|
x1:=ScreenWidth+1;
|
|
x2:=-1;
|
|
y1:=ScreenHeight+1;
|
|
y2:=-1;
|
|
for LineCounter := 1 to ScreenHeight do
|
|
begin
|
|
for ColCounter := 1 to ScreenWidth do
|
|
begin
|
|
if (WordRec(VideoBuf^[BufCounter]).One<>WordRec(OldVideoBuf^[BufCounter]).One) or
|
|
(WordRec(VideoBuf^[BufCounter]).Two<>WordRec(OldVideoBuf^[BufCounter]).Two) then
|
|
begin
|
|
if ColCounter<x1 then
|
|
x1:=ColCounter;
|
|
if ColCounter>x2 then
|
|
x2:=ColCounter;
|
|
if LineCounter<y1 then
|
|
y1:=LineCounter;
|
|
if LineCounter>y2 then
|
|
y2:=LineCounter;
|
|
end;
|
|
LineBuf^[BufCounter].UniCodeChar := WordRec(VideoBuf^[BufCounter]).One;
|
|
{ If (WordRec(VideoBuf^[BufCounter]).Two and $80)<>0 then
|
|
LineBuf^[BufCounter].Attributes := $100+WordRec(VideoBuf^[BufCounter]).Two
|
|
else }
|
|
LineBuf^[BufCounter].Attributes := WordRec(VideoBuf^[BufCounter]).Two;
|
|
|
|
Inc(BufCounter);
|
|
end; { for }
|
|
end; { for }
|
|
BufSize.X := ScreenWidth;
|
|
BufSize.Y := ScreenHeight;
|
|
|
|
with WriteRegion do
|
|
begin
|
|
if force then
|
|
begin
|
|
Top := 0;
|
|
Left :=0;
|
|
Bottom := ScreenHeight-1;
|
|
Right := ScreenWidth-1;
|
|
BufCoord.X := 0;
|
|
BufCoord.Y := 0;
|
|
end
|
|
else
|
|
begin
|
|
Top := y1-1;
|
|
Left :=x1-1;
|
|
Bottom := y2-1;
|
|
Right := x2-1;
|
|
BufCoord.X := x1-1;
|
|
BufCoord.Y := y1-1;
|
|
end;
|
|
end;
|
|
{
|
|
writeln('X1: ',x1);
|
|
writeln('Y1: ',y1);
|
|
writeln('X2: ',x2);
|
|
writeln('Y2: ',y2);
|
|
}
|
|
WriteConsoleOutput(TextRec(Output).Handle, LineBuf, BufSize, BufCoord, WriteRegion);
|
|
Dispose(LineBuf);
|
|
|
|
move(VideoBuf^,OldVideoBuf^,VideoBufSize);
|
|
end;
|
|
end;
|
|
|
|
procedure RegisterVideoModes;
|
|
begin
|
|
{ don't know what to do for win32 (FK) }
|
|
RegisterVideoMode(80, 25, True, @DefaultVideoModeSelector, $00000003);
|
|
end;
|
|
|
|
|
|
initialization
|
|
RegisterVideoModes;
|
|
|
|
finalization
|
|
UnRegisterVideoModes;
|
|
end.
|
|
{
|
|
$Log$
|
|
Revision 1.1 2001-01-13 11:03:59 peter
|
|
* API 2 RTL commit
|
|
|
|
}
|
|
|