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759 lines
28 KiB
ObjectPascal
759 lines
28 KiB
ObjectPascal
{
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This file is part of the Free Pascal run time library.
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Copyright (c) 1999-2000 by Florian Klaempfl
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member of the Free Pascal development team
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Video unit for Win32
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See the file COPYING.FPC, included in this distribution,
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for details about the copyright.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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**********************************************************************}
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unit Video;
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interface
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{$i videoh.inc}
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const
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useunicodefunctions : boolean = false;
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implementation
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uses
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windows,dos;
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{$i video.inc}
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type
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tunicodecharmappingflag = (umf_noinfo,umf_leadbyte,umf_undefined,
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umf_unused);
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punicodecharmapping = ^tunicodecharmapping;
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tunicodecharmapping = record
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unicode : word;
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flag : tunicodecharmappingflag;
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reserved : byte;
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end;
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const
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mapcp850 : array[0..255] of tunicodecharmapping = (
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(unicode : 0; flag : umf_noinfo; reserved : 0),
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(unicode : 1; flag : umf_noinfo; reserved : 0),
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(unicode : 2; flag : umf_noinfo; reserved : 0),
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(unicode : 3; flag : umf_noinfo; reserved : 0),
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(unicode : 4; flag : umf_noinfo; reserved : 0),
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(unicode : 5; flag : umf_noinfo; reserved : 0),
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(unicode : 6; flag : umf_noinfo; reserved : 0),
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(unicode : 7; flag : umf_noinfo; reserved : 0),
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(unicode : 8; flag : umf_noinfo; reserved : 0),
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(unicode : 9; flag : umf_noinfo; reserved : 0),
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(unicode : 10; flag : umf_noinfo; reserved : 0),
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(unicode : 11; flag : umf_noinfo; reserved : 0),
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(unicode : 12; flag : umf_noinfo; reserved : 0),
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(unicode : 13; flag : umf_noinfo; reserved : 0),
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(unicode : 14; flag : umf_noinfo; reserved : 0),
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(unicode : 15; flag : umf_noinfo; reserved : 0),
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(unicode : 16; flag : umf_noinfo; reserved : 0),
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(unicode : 17; flag : umf_noinfo; reserved : 0),
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(unicode : 18; flag : umf_noinfo; reserved : 0),
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(unicode : 19; flag : umf_noinfo; reserved : 0),
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(unicode : 20; flag : umf_noinfo; reserved : 0),
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(unicode : 21; flag : umf_noinfo; reserved : 0),
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(unicode : 22; flag : umf_noinfo; reserved : 0),
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(unicode : 23; flag : umf_noinfo; reserved : 0),
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(unicode : 24; flag : umf_noinfo; reserved : 0),
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(unicode : 25; flag : umf_noinfo; reserved : 0),
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(unicode : 26; flag : umf_noinfo; reserved : 0),
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(unicode : 27; flag : umf_noinfo; reserved : 0),
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(unicode : 28; flag : umf_noinfo; reserved : 0),
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(unicode : 29; flag : umf_noinfo; reserved : 0),
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(unicode : 30; flag : umf_noinfo; reserved : 0),
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(unicode : 31; flag : umf_noinfo; reserved : 0),
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(unicode : 32; flag : umf_noinfo; reserved : 0),
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(unicode : 33; flag : umf_noinfo; reserved : 0),
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(unicode : 34; flag : umf_noinfo; reserved : 0),
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(unicode : 35; flag : umf_noinfo; reserved : 0),
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(unicode : 36; flag : umf_noinfo; reserved : 0),
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(unicode : 37; flag : umf_noinfo; reserved : 0),
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(unicode : 38; flag : umf_noinfo; reserved : 0),
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(unicode : 39; flag : umf_noinfo; reserved : 0),
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(unicode : 40; flag : umf_noinfo; reserved : 0),
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(unicode : 41; flag : umf_noinfo; reserved : 0),
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(unicode : 42; flag : umf_noinfo; reserved : 0),
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(unicode : 43; flag : umf_noinfo; reserved : 0),
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(unicode : 44; flag : umf_noinfo; reserved : 0),
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(unicode : 45; flag : umf_noinfo; reserved : 0),
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(unicode : 46; flag : umf_noinfo; reserved : 0),
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(unicode : 47; flag : umf_noinfo; reserved : 0),
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(unicode : 48; flag : umf_noinfo; reserved : 0),
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(unicode : 49; flag : umf_noinfo; reserved : 0),
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(unicode : 50; flag : umf_noinfo; reserved : 0),
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(unicode : 51; flag : umf_noinfo; reserved : 0),
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(unicode : 52; flag : umf_noinfo; reserved : 0),
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(unicode : 53; flag : umf_noinfo; reserved : 0),
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(unicode : 54; flag : umf_noinfo; reserved : 0),
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(unicode : 55; flag : umf_noinfo; reserved : 0),
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(unicode : 56; flag : umf_noinfo; reserved : 0),
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(unicode : 57; flag : umf_noinfo; reserved : 0),
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(unicode : 58; flag : umf_noinfo; reserved : 0),
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(unicode : 59; flag : umf_noinfo; reserved : 0),
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(unicode : 60; flag : umf_noinfo; reserved : 0),
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(unicode : 61; flag : umf_noinfo; reserved : 0),
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(unicode : 62; flag : umf_noinfo; reserved : 0),
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(unicode : 63; flag : umf_noinfo; reserved : 0),
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(unicode : 64; flag : umf_noinfo; reserved : 0),
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(unicode : 65; flag : umf_noinfo; reserved : 0),
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(unicode : 66; flag : umf_noinfo; reserved : 0),
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(unicode : 67; flag : umf_noinfo; reserved : 0),
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(unicode : 68; flag : umf_noinfo; reserved : 0),
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(unicode : 69; flag : umf_noinfo; reserved : 0),
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(unicode : 70; flag : umf_noinfo; reserved : 0),
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(unicode : 71; flag : umf_noinfo; reserved : 0),
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(unicode : 72; flag : umf_noinfo; reserved : 0),
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(unicode : 73; flag : umf_noinfo; reserved : 0),
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(unicode : 74; flag : umf_noinfo; reserved : 0),
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(unicode : 75; flag : umf_noinfo; reserved : 0),
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(unicode : 76; flag : umf_noinfo; reserved : 0),
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(unicode : 77; flag : umf_noinfo; reserved : 0),
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(unicode : 78; flag : umf_noinfo; reserved : 0),
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(unicode : 79; flag : umf_noinfo; reserved : 0),
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(unicode : 80; flag : umf_noinfo; reserved : 0),
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(unicode : 81; flag : umf_noinfo; reserved : 0),
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(unicode : 82; flag : umf_noinfo; reserved : 0),
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(unicode : 83; flag : umf_noinfo; reserved : 0),
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(unicode : 84; flag : umf_noinfo; reserved : 0),
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(unicode : 85; flag : umf_noinfo; reserved : 0),
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(unicode : 86; flag : umf_noinfo; reserved : 0),
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(unicode : 87; flag : umf_noinfo; reserved : 0),
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(unicode : 88; flag : umf_noinfo; reserved : 0),
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(unicode : 89; flag : umf_noinfo; reserved : 0),
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(unicode : 90; flag : umf_noinfo; reserved : 0),
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(unicode : 91; flag : umf_noinfo; reserved : 0),
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(unicode : 92; flag : umf_noinfo; reserved : 0),
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(unicode : 93; flag : umf_noinfo; reserved : 0),
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(unicode : 94; flag : umf_noinfo; reserved : 0),
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(unicode : 95; flag : umf_noinfo; reserved : 0),
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(unicode : 96; flag : umf_noinfo; reserved : 0),
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(unicode : 97; flag : umf_noinfo; reserved : 0),
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(unicode : 98; flag : umf_noinfo; reserved : 0),
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(unicode : 99; flag : umf_noinfo; reserved : 0),
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(unicode : 100; flag : umf_noinfo; reserved : 0),
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(unicode : 101; flag : umf_noinfo; reserved : 0),
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(unicode : 102; flag : umf_noinfo; reserved : 0),
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(unicode : 103; flag : umf_noinfo; reserved : 0),
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(unicode : 104; flag : umf_noinfo; reserved : 0),
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(unicode : 105; flag : umf_noinfo; reserved : 0),
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(unicode : 106; flag : umf_noinfo; reserved : 0),
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(unicode : 107; flag : umf_noinfo; reserved : 0),
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(unicode : 108; flag : umf_noinfo; reserved : 0),
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(unicode : 109; flag : umf_noinfo; reserved : 0),
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(unicode : 110; flag : umf_noinfo; reserved : 0),
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(unicode : 111; flag : umf_noinfo; reserved : 0),
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(unicode : 112; flag : umf_noinfo; reserved : 0),
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(unicode : 113; flag : umf_noinfo; reserved : 0),
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(unicode : 114; flag : umf_noinfo; reserved : 0),
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(unicode : 115; flag : umf_noinfo; reserved : 0),
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(unicode : 116; flag : umf_noinfo; reserved : 0),
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(unicode : 117; flag : umf_noinfo; reserved : 0),
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(unicode : 118; flag : umf_noinfo; reserved : 0),
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(unicode : 119; flag : umf_noinfo; reserved : 0),
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(unicode : 120; flag : umf_noinfo; reserved : 0),
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(unicode : 121; flag : umf_noinfo; reserved : 0),
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(unicode : 122; flag : umf_noinfo; reserved : 0),
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(unicode : 123; flag : umf_noinfo; reserved : 0),
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(unicode : 124; flag : umf_noinfo; reserved : 0),
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(unicode : 125; flag : umf_noinfo; reserved : 0),
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(unicode : 126; flag : umf_noinfo; reserved : 0),
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(unicode : 127; flag : umf_noinfo; reserved : 0),
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(unicode : 199; flag : umf_noinfo; reserved : 0),
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(unicode : 252; flag : umf_noinfo; reserved : 0),
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(unicode : 233; flag : umf_noinfo; reserved : 0),
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(unicode : 226; flag : umf_noinfo; reserved : 0),
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(unicode : 228; flag : umf_noinfo; reserved : 0),
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(unicode : 224; flag : umf_noinfo; reserved : 0),
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(unicode : 229; flag : umf_noinfo; reserved : 0),
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(unicode : 231; flag : umf_noinfo; reserved : 0),
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(unicode : 234; flag : umf_noinfo; reserved : 0),
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(unicode : 235; flag : umf_noinfo; reserved : 0),
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(unicode : 232; flag : umf_noinfo; reserved : 0),
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(unicode : 239; flag : umf_noinfo; reserved : 0),
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(unicode : 238; flag : umf_noinfo; reserved : 0),
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(unicode : 236; flag : umf_noinfo; reserved : 0),
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(unicode : 196; flag : umf_noinfo; reserved : 0),
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(unicode : 197; flag : umf_noinfo; reserved : 0),
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(unicode : 201; flag : umf_noinfo; reserved : 0),
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(unicode : 230; flag : umf_noinfo; reserved : 0),
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(unicode : 198; flag : umf_noinfo; reserved : 0),
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(unicode : 244; flag : umf_noinfo; reserved : 0),
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(unicode : 246; flag : umf_noinfo; reserved : 0),
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(unicode : 242; flag : umf_noinfo; reserved : 0),
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(unicode : 251; flag : umf_noinfo; reserved : 0),
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(unicode : 249; flag : umf_noinfo; reserved : 0),
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(unicode : 255; flag : umf_noinfo; reserved : 0),
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(unicode : 214; flag : umf_noinfo; reserved : 0),
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(unicode : 220; flag : umf_noinfo; reserved : 0),
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(unicode : 248; flag : umf_noinfo; reserved : 0),
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(unicode : 163; flag : umf_noinfo; reserved : 0),
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(unicode : 216; flag : umf_noinfo; reserved : 0),
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(unicode : 215; flag : umf_noinfo; reserved : 0),
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(unicode : 402; flag : umf_noinfo; reserved : 0),
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(unicode : 225; flag : umf_noinfo; reserved : 0),
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(unicode : 237; flag : umf_noinfo; reserved : 0),
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(unicode : 243; flag : umf_noinfo; reserved : 0),
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(unicode : 250; flag : umf_noinfo; reserved : 0),
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(unicode : 241; flag : umf_noinfo; reserved : 0),
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(unicode : 209; flag : umf_noinfo; reserved : 0),
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(unicode : 170; flag : umf_noinfo; reserved : 0),
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(unicode : 186; flag : umf_noinfo; reserved : 0),
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(unicode : 191; flag : umf_noinfo; reserved : 0),
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(unicode : 174; flag : umf_noinfo; reserved : 0),
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(unicode : 172; flag : umf_noinfo; reserved : 0),
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(unicode : 189; flag : umf_noinfo; reserved : 0),
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(unicode : 188; flag : umf_noinfo; reserved : 0),
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(unicode : 161; flag : umf_noinfo; reserved : 0),
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(unicode : 171; flag : umf_noinfo; reserved : 0),
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(unicode : 187; flag : umf_noinfo; reserved : 0),
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(unicode : 9617; flag : umf_noinfo; reserved : 0),
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(unicode : 9618; flag : umf_noinfo; reserved : 0),
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(unicode : 9619; flag : umf_noinfo; reserved : 0),
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(unicode : 9474; flag : umf_noinfo; reserved : 0),
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(unicode : 9508; flag : umf_noinfo; reserved : 0),
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(unicode : 193; flag : umf_noinfo; reserved : 0),
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(unicode : 194; flag : umf_noinfo; reserved : 0),
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(unicode : 192; flag : umf_noinfo; reserved : 0),
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(unicode : 169; flag : umf_noinfo; reserved : 0),
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(unicode : 9571; flag : umf_noinfo; reserved : 0),
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(unicode : 9553; flag : umf_noinfo; reserved : 0),
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(unicode : 9559; flag : umf_noinfo; reserved : 0),
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(unicode : 9565; flag : umf_noinfo; reserved : 0),
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(unicode : 162; flag : umf_noinfo; reserved : 0),
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(unicode : 165; flag : umf_noinfo; reserved : 0),
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(unicode : 9488; flag : umf_noinfo; reserved : 0),
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(unicode : 9492; flag : umf_noinfo; reserved : 0),
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(unicode : 9524; flag : umf_noinfo; reserved : 0),
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(unicode : 9516; flag : umf_noinfo; reserved : 0),
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(unicode : 9500; flag : umf_noinfo; reserved : 0),
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(unicode : 9472; flag : umf_noinfo; reserved : 0),
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(unicode : 9532; flag : umf_noinfo; reserved : 0),
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(unicode : 227; flag : umf_noinfo; reserved : 0),
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(unicode : 195; flag : umf_noinfo; reserved : 0),
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(unicode : 9562; flag : umf_noinfo; reserved : 0),
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(unicode : 9556; flag : umf_noinfo; reserved : 0),
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(unicode : 9577; flag : umf_noinfo; reserved : 0),
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(unicode : 9574; flag : umf_noinfo; reserved : 0),
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(unicode : 9568; flag : umf_noinfo; reserved : 0),
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(unicode : 9552; flag : umf_noinfo; reserved : 0),
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(unicode : 9580; flag : umf_noinfo; reserved : 0),
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(unicode : 164; flag : umf_noinfo; reserved : 0),
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(unicode : 240; flag : umf_noinfo; reserved : 0),
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(unicode : 208; flag : umf_noinfo; reserved : 0),
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(unicode : 202; flag : umf_noinfo; reserved : 0),
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(unicode : 203; flag : umf_noinfo; reserved : 0),
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(unicode : 200; flag : umf_noinfo; reserved : 0),
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(unicode : 305; flag : umf_noinfo; reserved : 0),
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(unicode : 205; flag : umf_noinfo; reserved : 0),
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(unicode : 206; flag : umf_noinfo; reserved : 0),
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(unicode : 207; flag : umf_noinfo; reserved : 0),
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(unicode : 9496; flag : umf_noinfo; reserved : 0),
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(unicode : 9484; flag : umf_noinfo; reserved : 0),
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(unicode : 9608; flag : umf_noinfo; reserved : 0),
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(unicode : 9604; flag : umf_noinfo; reserved : 0),
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(unicode : 166; flag : umf_noinfo; reserved : 0),
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(unicode : 204; flag : umf_noinfo; reserved : 0),
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(unicode : 9600; flag : umf_noinfo; reserved : 0),
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(unicode : 211; flag : umf_noinfo; reserved : 0),
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(unicode : 223; flag : umf_noinfo; reserved : 0),
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(unicode : 212; flag : umf_noinfo; reserved : 0),
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(unicode : 210; flag : umf_noinfo; reserved : 0),
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(unicode : 245; flag : umf_noinfo; reserved : 0),
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(unicode : 213; flag : umf_noinfo; reserved : 0),
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(unicode : 181; flag : umf_noinfo; reserved : 0),
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(unicode : 254; flag : umf_noinfo; reserved : 0),
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(unicode : 222; flag : umf_noinfo; reserved : 0),
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(unicode : 218; flag : umf_noinfo; reserved : 0),
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(unicode : 219; flag : umf_noinfo; reserved : 0),
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(unicode : 217; flag : umf_noinfo; reserved : 0),
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(unicode : 253; flag : umf_noinfo; reserved : 0),
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(unicode : 221; flag : umf_noinfo; reserved : 0),
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(unicode : 175; flag : umf_noinfo; reserved : 0),
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(unicode : 180; flag : umf_noinfo; reserved : 0),
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(unicode : 173; flag : umf_noinfo; reserved : 0),
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(unicode : 177; flag : umf_noinfo; reserved : 0),
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(unicode : 8215; flag : umf_noinfo; reserved : 0),
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(unicode : 190; flag : umf_noinfo; reserved : 0),
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(unicode : 182; flag : umf_noinfo; reserved : 0),
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(unicode : 167; flag : umf_noinfo; reserved : 0),
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(unicode : 247; flag : umf_noinfo; reserved : 0),
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(unicode : 184; flag : umf_noinfo; reserved : 0),
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(unicode : 176; flag : umf_noinfo; reserved : 0),
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(unicode : 168; flag : umf_noinfo; reserved : 0),
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(unicode : 183; flag : umf_noinfo; reserved : 0),
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(unicode : 185; flag : umf_noinfo; reserved : 0),
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(unicode : 179; flag : umf_noinfo; reserved : 0),
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(unicode : 178; flag : umf_noinfo; reserved : 0),
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(unicode : 9632; flag : umf_noinfo; reserved : 0),
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(unicode : 160; flag : umf_noinfo; reserved : 0)
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);
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const
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LastCursorType: word = crUnderline;
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OrigScreen: PVideoBuf = nil;
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OrigScreenSize: cardinal = 0;
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var ConsoleInfo : TConsoleScreenBufferInfo;
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ConsoleCursorInfo : TConsoleCursorInfo;
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OrigCP: cardinal;
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OrigConsoleCursorInfo : TConsoleCursorInfo;
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OrigConsoleInfo : TConsoleScreenBufferInfo;
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procedure SysInitVideo;
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begin
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ScreenColor:=true;
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GetConsoleScreenBufferInfo(TextRec(Output).Handle, OrigConsoleInfo);
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GetConsoleCursorInfo(TextRec(Output).Handle, OrigConsoleCursorInfo);
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OrigCP := GetConsoleCP;
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ConsoleInfo:=OrigConsoleInfo;
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ConsoleCursorInfo:=OrigConsoleCursorInfo;
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{
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About the ConsoleCursorInfo record: There are 3 possible
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structures in it that can be regarded as the 'screen':
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- dwsize : contains the cols & row in current screen buffer.
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- srwindow : Coordinates (relative to buffer) of upper left
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& lower right corners of visible console.
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- dmMaximumWindowSize : Maximal size of Screen buffer.
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The first implementation of video used srWindow. After some
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bug-reports, this was switched to dwMaximumWindowSize.
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}
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with ConsoleInfo.dwMaximumWindowSize do
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begin
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ScreenWidth:=X;
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ScreenHeight:=Y;
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end;
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{ TDrawBuffer only has FVMaxWidth elements
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larger values lead to crashes }
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if ScreenWidth> FVMaxWidth then
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ScreenWidth:=FVMaxWidth;
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CursorX:=ConsoleInfo.dwCursorPosition.x;
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CursorY:=ConsoleInfo.dwCursorPosition.y;
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if not ConsoleCursorInfo.bvisible then
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CursorLines:=0
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else
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CursorLines:=ConsoleCursorInfo.dwSize;
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end;
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procedure SysDoneVideo;
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begin
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SetConsoleScreenBufferSize (TextRec (Output).Handle, OrigConsoleInfo.dwSize);
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SetConsoleWindowInfo (cardinal (TextRec (Output).Handle), true, OrigConsoleInfo.srWindow);
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SetConsoleCursorInfo(TextRec(Output).Handle, OrigConsoleCursorInfo);
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SetConsoleCP(OrigCP);
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end;
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function SysGetCapabilities: Word;
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begin
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SysGetCapabilities:=cpColor or cpChangeCursor;
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end;
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procedure SysSetCursorPos(NewCursorX, NewCursorY: Word);
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var
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pos : COORD;
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begin
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pos.x:=NewCursorX;
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pos.y:=NewCursorY;
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SetConsoleCursorPosition(TextRec(Output).Handle,pos);
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CursorX:=pos.x;
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CursorY:=pos.y;
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end;
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function SysGetCursorType: Word;
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begin
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|
GetConsoleCursorInfo(TextRec(Output).Handle,ConsoleCursorInfo);
|
|
if not ConsoleCursorInfo.bvisible then
|
|
SysGetCursorType:=crHidden
|
|
else
|
|
case ConsoleCursorInfo.dwSize of
|
|
1..30:
|
|
SysGetCursorType:=crUnderline;
|
|
31..70:
|
|
SysGetCursorType:=crHalfBlock;
|
|
71..100:
|
|
SysGetCursorType:=crBlock;
|
|
end;
|
|
end;
|
|
|
|
|
|
procedure SysSetCursorType(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 SysVideoModeSelector (const VideoMode: TVideoMode): boolean;
|
|
|
|
var MI: Console_Screen_Buffer_Info;
|
|
C: Coord;
|
|
SR: Small_Rect;
|
|
|
|
begin
|
|
if not (GetConsoleScreenBufferInfo (TextRec (Output).Handle, MI)) then
|
|
SysVideoModeSelector := false
|
|
else
|
|
begin
|
|
with MI do
|
|
begin
|
|
C.X := VideoMode.Col;
|
|
C.Y := VideoMode.Row;
|
|
end;
|
|
with SR do
|
|
begin
|
|
Top := 0;
|
|
Left := 0;
|
|
{ First, we need to make sure we reach the minimum window size
|
|
to always fit in the new buffer after changing buffer size. }
|
|
Right := MI.srWindow.Right - MI.srWindow.Left;
|
|
if VideoMode.Col <= Right then
|
|
Right := Pred (VideoMode.Col);
|
|
Bottom := MI.srWindow.Bottom - MI.srWindow.Top;
|
|
if VideoMode.Row <= Bottom then
|
|
Bottom := Pred (VideoMode.Row);
|
|
end;
|
|
if SetConsoleWindowInfo (cardinal (TextRec (Output).Handle), true, SR) then
|
|
if SetConsoleScreenBufferSize (TextRec (Output).Handle, C) then
|
|
begin
|
|
with SR do
|
|
begin
|
|
{ Now, we can resize the window to the final size. }
|
|
Right := Pred (VideoMode.Col);
|
|
Bottom := Pred (VideoMode.Row);
|
|
end;
|
|
if SetConsoleWindowInfo (cardinal (TextRec (Output).Handle), true, SR) then
|
|
begin
|
|
SysVideoModeSelector := true;
|
|
SetCursorType (LastCursorType);
|
|
ClearScreen;
|
|
end
|
|
else
|
|
begin
|
|
SysVideoModeSelector := false;
|
|
SetConsoleScreenBufferSize (TextRec (Output).Handle, MI.dwSize);
|
|
SetConsoleWindowInfo (cardinal (TextRec (Output).Handle), true, MI.srWindow);
|
|
SetCursorType (LastCursorType);
|
|
end
|
|
end
|
|
else
|
|
begin
|
|
SysVideoModeSelector := false;
|
|
SetConsoleWindowInfo (cardinal (TextRec (Output).Handle), true, MI.srWindow);
|
|
SetCursorType (LastCursorType);
|
|
end
|
|
else
|
|
SysVideoModeSelector := false;
|
|
end;
|
|
end;
|
|
|
|
Const
|
|
SysVideoModeCount = 6;
|
|
SysVMD : Array[0..SysVideoModeCount-1] of TVideoMode = (
|
|
(Col: 40; Row: 25; Color: True),
|
|
(Col: 80; Row: 25; Color: True),
|
|
(Col: 80; Row: 30; Color: True),
|
|
(Col: 80; Row: 43; Color: True),
|
|
(Col: 80; Row: 50; Color: True),
|
|
(Col: 80; Row: 25; Color: True) // Reserved for TargetEntry
|
|
);
|
|
|
|
|
|
Function SysSetVideoMode (Const Mode : TVideoMode) : Boolean;
|
|
|
|
Var
|
|
I : Integer;
|
|
|
|
begin
|
|
I:=SysVideoModeCount-1;
|
|
SysSetVideoMode:=False;
|
|
While (I>=0) and Not SysSetVideoMode do
|
|
If (Mode.col=SysVMD[i].col) and
|
|
(Mode.Row=SysVMD[i].Row) and
|
|
(Mode.Color=SysVMD[i].Color) then
|
|
SysSetVideoMode:=True
|
|
else
|
|
Dec(I);
|
|
If SysSetVideoMode then
|
|
begin
|
|
if SysVideoModeSelector(Mode) then
|
|
begin
|
|
ScreenWidth:=SysVMD[I].Col;
|
|
ScreenHeight:=SysVMD[I].Row;
|
|
ScreenColor:=SysVMD[I].Color;
|
|
end else SysSetVideoMode := false;
|
|
end;
|
|
end;
|
|
|
|
Function SysGetVideoModeData (Index : Word; Var Data : TVideoMode) : boolean;
|
|
|
|
begin
|
|
SysGetVideoModeData:=(Index<=high(SysVMD));
|
|
If SysGetVideoModeData then
|
|
Data:=SysVMD[Index];
|
|
end;
|
|
|
|
Function SysGetVideoModeCount : Word;
|
|
|
|
begin
|
|
SysGetVideoModeCount:=SysVideoModeCount;
|
|
end;
|
|
|
|
procedure SysClearScreen;
|
|
begin
|
|
UpdateScreen(true);
|
|
end;
|
|
|
|
procedure SysUpdateScreen(Force: Boolean);
|
|
|
|
type WordRec = record
|
|
One, Two: Byte;
|
|
end; { wordrec }
|
|
|
|
var
|
|
BufSize,
|
|
BufCoord : COORD;
|
|
WriteRegion : SMALL_RECT;
|
|
LineBuf : Array[0..(1024*32) - 1] of TCharInfo;
|
|
BufCounter : Longint;
|
|
LineCounter,
|
|
ColCounter : Longint;
|
|
smallforce : boolean;
|
|
x1,y1,x2,y2 : longint;
|
|
p1,p2,p3 : PCardinal;
|
|
j : integer;
|
|
begin
|
|
if force then
|
|
smallforce:=true
|
|
else
|
|
begin
|
|
{$ifdef cpui386}
|
|
asm
|
|
pushl %esi
|
|
pushl %edi
|
|
movl VideoBuf,%esi
|
|
movl OldVideoBuf,%edi
|
|
movl VideoBufSize,%ecx
|
|
shrl $2,%ecx
|
|
repe
|
|
cmpsl
|
|
setne smallforce
|
|
popl %edi
|
|
popl %esi
|
|
end;
|
|
{$else}
|
|
{$ifdef cpux86_64}
|
|
asm
|
|
pushq %rsi
|
|
pushq %rdi
|
|
xorq %rcx,%rcx
|
|
movq VideoBuf(%rip),%rsi
|
|
movq OldVideoBuf(%rip),%rdi
|
|
movl VideoBufSize(%rip),%ecx
|
|
shrq $2,%rcx
|
|
repe
|
|
cmpsl
|
|
setne smallforce
|
|
popq %rdi
|
|
popq %rsi
|
|
end;
|
|
{$else}
|
|
{$INFO No optimized version for this CPU, reverting to a pascal version}
|
|
j:=Videobufsize shr 2;
|
|
smallforce:=false;
|
|
p1:=pcardinal(VideoBuf);
|
|
p2:=pcardinal(OldVideoBuf);
|
|
p3:=@pcardinal(videobuf)[j];
|
|
while (p1<p3) and (p1^=p2^) do
|
|
begin
|
|
inc(p1); inc(p2);
|
|
end;
|
|
smallforce:=p1<>p3;
|
|
{$ENDIF}
|
|
{$endif}
|
|
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;
|
|
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;
|
|
if useunicodefunctions then
|
|
LineBuf[BufCounter].UniCodeChar := Widechar(mapcp850[WordRec(VideoBuf^[BufCounter]).One].unicode)
|
|
else
|
|
LineBuf[BufCounter].UniCodeChar := Widechar(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);
|
|
}
|
|
if useunicodefunctions then
|
|
WriteConsoleOutputW(TextRec(Output).Handle, @LineBuf, BufSize, BufCoord, WriteRegion)
|
|
else
|
|
WriteConsoleOutput(TextRec(Output).Handle, @LineBuf, BufSize, BufCoord, WriteRegion);
|
|
|
|
move(VideoBuf^,OldVideoBuf^,VideoBufSize);
|
|
end;
|
|
end;
|
|
|
|
Const
|
|
SysVideoDriver : TVideoDriver = (
|
|
InitDriver : @SysInitVideo;
|
|
DoneDriver : @SysDoneVideo;
|
|
UpdateScreen : @SysUpdateScreen;
|
|
ClearScreen : @SysClearScreen;
|
|
SetVideoMode : @SysSetVideoMode;
|
|
GetVideoModeCount : @SysGetVideoModeCount;
|
|
GetVideoModeData : @SysGetVideoModeData;
|
|
SetCursorPos : @SysSetCursorPos;
|
|
GetCursorType : @SysGetCursorType;
|
|
SetCursorType : @SysSetCursorType;
|
|
GetCapabilities : @SysGetCapabilities
|
|
|
|
);
|
|
|
|
procedure TargetEntry;
|
|
var
|
|
C: Coord;
|
|
SR: Small_Rect;
|
|
VioMode: TConsoleScreenBufferInfo;
|
|
begin
|
|
GetConsoleScreenBufferInfo (TextRec (Output).Handle, VioMode);
|
|
{ Register the curent video mode in reserved slot in System Modes}
|
|
with VioMode do
|
|
begin
|
|
{Assume we have at least 16 colours available in "colour" modes}
|
|
SysVMD[SysVideoModeCount-1].Col:=dwMaximumWindowSize.X;
|
|
SysVMD[SysVideoModeCount-1].Row:=dwMaximumWindowSize.Y;
|
|
SysVMD[SysVideoModeCount-1].Color:=true;
|
|
OrigScreenSize := max(dwMaximumWindowSize.X,dwSize.X) * max(dwMaximumWindowSize.Y,dwSize.Y) * SizeOf (Char_Info);
|
|
end;
|
|
GetMem (OrigScreen, OrigScreenSize);
|
|
with C do
|
|
begin
|
|
X := 0;
|
|
Y := 0;
|
|
end;
|
|
with SR do
|
|
begin
|
|
Top := 0;
|
|
Left := 0;
|
|
Right := Pred (VioMode.dwSize.X);
|
|
Bottom := Pred (VioMode.dwSize.Y);
|
|
end;
|
|
if not (ReadConsoleOutput (TextRec (Output).Handle, OrigScreen, VioMode.dwSize, C, SR)) then
|
|
begin
|
|
FreeMem (OrigScreen, OrigScreenSize);
|
|
OrigScreen := nil;
|
|
OrigScreenSize := 0;
|
|
end;
|
|
end;
|
|
|
|
|
|
initialization
|
|
SetVideoDriver(SysVideoDriver);
|
|
TargetEntry;
|
|
|
|
finalization
|
|
if (OrigScreenSize <> 0) and (OrigScreen <> nil) then
|
|
begin
|
|
FreeMem (OrigScreen, OrigScreenSize);
|
|
OrigScreen := nil;
|
|
OrigScreenSize := 0;
|
|
end;
|
|
|
|
end.
|