475 lines
19 KiB
ObjectPascal
475 lines
19 KiB
ObjectPascal
(*******************************************************************
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*
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* gmain graphics utility main interface 1.1
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*
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* This file defines a common interface, implemented in the body
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* file 'gmain.c'. It relies on system dependent driver files,
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* like 'gfs_os.c', whose interface is described in 'gdriver.h'.
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*
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* Copyright 1996 David Turner, Robert Wilhelm and Werner Lemberg.
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*
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* This file is part of the FreeType project, and may only be used
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* modified and distributed under the terms of the FreeType project
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* license, LICENSE.TXT. By continuing to use, modify or distribute
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* this file you indicate that you have read the license and
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* understand and accept it fully.
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*
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******************************************************************)
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Unit GMain;
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interface
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const
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Graphics_Mode_Mono = 1;
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Graphics_Mode_Gray = 2;
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type
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TVioScreenBuffer = array[0..0] of Byte;
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PVioScreenBuffer = ^TVioScreenBuffer;
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{$IFDEF OS2}
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Int = LongInt;
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{$ELSE}
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Int = Integer;
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{$ENDIF}
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var
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Vio : PVioScreenBuffer;
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(* pointer to VRAM or display buffer *)
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vio_ScanLineWidth : Int;
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vio_Width : Int;
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vio_Height : Int;
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gray_palette : array[0..4] of Byte; (* gray palette *)
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gcursor_x : int;
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gcursor_y : int;
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gwindow_width : int;
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gwindow_height : int;
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function Set_Graph_Screen( mode : int ) : boolean;
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(* Set a Graphics Mode, chosen from the Graphics_Mode_xxx list *)
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function Restore_Screen : boolean;
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(* Restore a previous ( or text ) video mode *)
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procedure Display_Bitmap_On_Screen( var buff; line, col : Int );
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(* display bitmap of 'line' line, and 'col' columns ( each *)
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(* column mode of 1 byte *)
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procedure Goto_XY( x, y : int );
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procedure Print_Str( str : string );
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procedure Print_XY ( x, y : int; str : string );
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implementation
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uses GDriver;
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type
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TFunction_8x8 = procedure( x, y : Int; c : char );
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TByte = array[0..0] of Byte;
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PByte = ^TByte;
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var
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Current_Mode : Byte;
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Print_8x8 : TFunction_8x8;
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const
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Font_8x8 : array[0..2047] of Byte
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= (
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$00, $00, $00, $00, $00, $00, $00, $00,
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$7E, $81, $A5, $81, $BD, $99, $81, $7E,
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$7E, $FF, $DB, $FF, $C3, $E7, $FF, $7E,
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$6C, $FE, $FE, $FE, $7C, $38, $10, $00,
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$10, $38, $7C, $FE, $7C, $38, $10, $00,
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$38, $7C, $38, $FE, $FE, $92, $10, $7C,
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$00, $10, $38, $7C, $FE, $7C, $38, $7C,
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$00, $00, $18, $3C, $3C, $18, $00, $00,
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$FF, $FF, $E7, $C3, $C3, $E7, $FF, $FF,
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$00, $3C, $66, $42, $42, $66, $3C, $00,
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$FF, $C3, $99, $BD, $BD, $99, $C3, $FF,
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$0F, $07, $0F, $7D, $CC, $CC, $CC, $78,
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$3C, $66, $66, $66, $3C, $18, $7E, $18,
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$3F, $33, $3F, $30, $30, $70, $F0, $E0,
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$7F, $63, $7F, $63, $63, $67, $E6, $C0,
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$99, $5A, $3C, $E7, $E7, $3C, $5A, $99,
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$80, $E0, $F8, $FE, $F8, $E0, $80, $00,
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$02, $0E, $3E, $FE, $3E, $0E, $02, $00,
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$18, $3C, $7E, $18, $18, $7E, $3C, $18,
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$66, $66, $66, $66, $66, $00, $66, $00,
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$7F, $DB, $DB, $7B, $1B, $1B, $1B, $00,
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$3E, $63, $38, $6C, $6C, $38, $86, $FC,
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$00, $00, $00, $00, $7E, $7E, $7E, $00,
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$18, $3C, $7E, $18, $7E, $3C, $18, $FF,
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$18, $3C, $7E, $18, $18, $18, $18, $00,
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$18, $18, $18, $18, $7E, $3C, $18, $00,
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$00, $18, $0C, $FE, $0C, $18, $00, $00,
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$00, $30, $60, $FE, $60, $30, $00, $00,
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$00, $00, $C0, $C0, $C0, $FE, $00, $00,
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$00, $24, $66, $FF, $66, $24, $00, $00,
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$00, $18, $3C, $7E, $FF, $FF, $00, $00,
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$00, $FF, $FF, $7E, $3C, $18, $00, $00,
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$00, $00, $00, $00, $00, $00, $00, $00,
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$18, $3C, $3C, $18, $18, $00, $18, $00,
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$6C, $6C, $6C, $00, $00, $00, $00, $00,
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$6C, $6C, $FE, $6C, $FE, $6C, $6C, $00,
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$18, $7E, $C0, $7C, $06, $FC, $18, $00,
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$00, $C6, $CC, $18, $30, $66, $C6, $00,
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$38, $6C, $38, $76, $DC, $CC, $76, $00,
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$30, $30, $60, $00, $00, $00, $00, $00,
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$18, $30, $60, $60, $60, $30, $18, $00,
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$60, $30, $18, $18, $18, $30, $60, $00,
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$00, $66, $3C, $FF, $3C, $66, $00, $00,
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$00, $18, $18, $7E, $18, $18, $00, $00,
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$00, $00, $00, $00, $00, $18, $18, $30,
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$00, $00, $00, $7E, $00, $00, $00, $00,
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$00, $00, $00, $00, $00, $18, $18, $00,
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$06, $0C, $18, $30, $60, $C0, $80, $00,
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$7C, $CE, $DE, $F6, $E6, $C6, $7C, $00,
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$30, $70, $30, $30, $30, $30, $FC, $00,
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$78, $CC, $0C, $38, $60, $CC, $FC, $00,
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$78, $CC, $0C, $38, $0C, $CC, $78, $00,
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$1C, $3C, $6C, $CC, $FE, $0C, $1E, $00,
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$FC, $C0, $F8, $0C, $0C, $CC, $78, $00,
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$38, $60, $C0, $F8, $CC, $CC, $78, $00,
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$FC, $CC, $0C, $18, $30, $30, $30, $00,
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$78, $CC, $CC, $78, $CC, $CC, $78, $00,
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$78, $CC, $CC, $7C, $0C, $18, $70, $00,
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$00, $18, $18, $00, $00, $18, $18, $00,
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$00, $18, $18, $00, $00, $18, $18, $30,
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$18, $30, $60, $C0, $60, $30, $18, $00,
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$00, $00, $7E, $00, $7E, $00, $00, $00,
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$60, $30, $18, $0C, $18, $30, $60, $00,
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$3C, $66, $0C, $18, $18, $00, $18, $00,
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$7C, $C6, $DE, $DE, $DC, $C0, $7C, $00,
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$30, $78, $CC, $CC, $FC, $CC, $CC, $00,
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$FC, $66, $66, $7C, $66, $66, $FC, $00,
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$3C, $66, $C0, $C0, $C0, $66, $3C, $00,
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$F8, $6C, $66, $66, $66, $6C, $F8, $00,
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$FE, $62, $68, $78, $68, $62, $FE, $00,
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$FE, $62, $68, $78, $68, $60, $F0, $00,
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$3C, $66, $C0, $C0, $CE, $66, $3A, $00,
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$CC, $CC, $CC, $FC, $CC, $CC, $CC, $00,
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$78, $30, $30, $30, $30, $30, $78, $00,
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$1E, $0C, $0C, $0C, $CC, $CC, $78, $00,
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$E6, $66, $6C, $78, $6C, $66, $E6, $00,
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$F0, $60, $60, $60, $62, $66, $FE, $00,
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$C6, $EE, $FE, $FE, $D6, $C6, $C6, $00,
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$C6, $E6, $F6, $DE, $CE, $C6, $C6, $00,
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$38, $6C, $C6, $C6, $C6, $6C, $38, $00,
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$FC, $66, $66, $7C, $60, $60, $F0, $00,
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$7C, $C6, $C6, $C6, $D6, $7C, $0E, $00,
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$FC, $66, $66, $7C, $6C, $66, $E6, $00,
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$7C, $C6, $E0, $78, $0E, $C6, $7C, $00,
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$FC, $B4, $30, $30, $30, $30, $78, $00,
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$CC, $CC, $CC, $CC, $CC, $CC, $FC, $00,
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$CC, $CC, $CC, $CC, $CC, $78, $30, $00,
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$C6, $C6, $C6, $C6, $D6, $FE, $6C, $00,
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$C6, $C6, $6C, $38, $6C, $C6, $C6, $00,
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$CC, $CC, $CC, $78, $30, $30, $78, $00,
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$FE, $C6, $8C, $18, $32, $66, $FE, $00,
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$78, $60, $60, $60, $60, $60, $78, $00,
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$C0, $60, $30, $18, $0C, $06, $02, $00,
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$78, $18, $18, $18, $18, $18, $78, $00,
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$10, $38, $6C, $C6, $00, $00, $00, $00,
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$00, $00, $00, $00, $00, $00, $00, $FF,
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$30, $30, $18, $00, $00, $00, $00, $00,
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$00, $00, $78, $0C, $7C, $CC, $76, $00,
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$E0, $60, $60, $7C, $66, $66, $DC, $00,
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$00, $00, $78, $CC, $C0, $CC, $78, $00,
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$1C, $0C, $0C, $7C, $CC, $CC, $76, $00,
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$00, $00, $78, $CC, $FC, $C0, $78, $00,
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$38, $6C, $64, $F0, $60, $60, $F0, $00,
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$00, $00, $76, $CC, $CC, $7C, $0C, $F8,
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$E0, $60, $6C, $76, $66, $66, $E6, $00,
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$30, $00, $70, $30, $30, $30, $78, $00,
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$0C, $00, $1C, $0C, $0C, $CC, $CC, $78,
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$E0, $60, $66, $6C, $78, $6C, $E6, $00,
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$70, $30, $30, $30, $30, $30, $78, $00,
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$00, $00, $CC, $FE, $FE, $D6, $D6, $00,
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$00, $00, $B8, $CC, $CC, $CC, $CC, $00,
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$00, $00, $78, $CC, $CC, $CC, $78, $00,
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$00, $00, $DC, $66, $66, $7C, $60, $F0,
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$00, $00, $76, $CC, $CC, $7C, $0C, $1E,
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$00, $00, $DC, $76, $62, $60, $F0, $00,
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$00, $00, $7C, $C0, $70, $1C, $F8, $00,
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$10, $30, $FC, $30, $30, $34, $18, $00,
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$00, $00, $CC, $CC, $CC, $CC, $76, $00,
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$00, $00, $CC, $CC, $CC, $78, $30, $00,
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$00, $00, $C6, $C6, $D6, $FE, $6C, $00,
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$00, $00, $C6, $6C, $38, $6C, $C6, $00,
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$00, $00, $CC, $CC, $CC, $7C, $0C, $F8,
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$00, $00, $FC, $98, $30, $64, $FC, $00,
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$1C, $30, $30, $E0, $30, $30, $1C, $00,
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$18, $18, $18, $00, $18, $18, $18, $00,
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$E0, $30, $30, $1C, $30, $30, $E0, $00,
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$76, $DC, $00, $00, $00, $00, $00, $00,
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$00, $10, $38, $6C, $C6, $C6, $FE, $00,
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$7C, $C6, $C0, $C6, $7C, $0C, $06, $7C,
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$00, $CC, $00, $CC, $CC, $CC, $76, $00,
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$1C, $00, $78, $CC, $FC, $C0, $78, $00,
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$7E, $81, $3C, $06, $3E, $66, $3B, $00,
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$CC, $00, $78, $0C, $7C, $CC, $76, $00,
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$E0, $00, $78, $0C, $7C, $CC, $76, $00,
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$30, $30, $78, $0C, $7C, $CC, $76, $00,
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$00, $00, $7C, $C6, $C0, $78, $0C, $38,
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$7E, $81, $3C, $66, $7E, $60, $3C, $00,
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$CC, $00, $78, $CC, $FC, $C0, $78, $00,
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$E0, $00, $78, $CC, $FC, $C0, $78, $00,
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$CC, $00, $70, $30, $30, $30, $78, $00,
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$7C, $82, $38, $18, $18, $18, $3C, $00,
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$E0, $00, $70, $30, $30, $30, $78, $00,
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$C6, $10, $7C, $C6, $FE, $C6, $C6, $00,
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$30, $30, $00, $78, $CC, $FC, $CC, $00,
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$1C, $00, $FC, $60, $78, $60, $FC, $00,
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$00, $00, $7F, $0C, $7F, $CC, $7F, $00,
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$3E, $6C, $CC, $FE, $CC, $CC, $CE, $00,
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$78, $84, $00, $78, $CC, $CC, $78, $00,
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$00, $CC, $00, $78, $CC, $CC, $78, $00,
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$00, $E0, $00, $78, $CC, $CC, $78, $00,
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$78, $84, $00, $CC, $CC, $CC, $76, $00,
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$00, $E0, $00, $CC, $CC, $CC, $76, $00,
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$00, $CC, $00, $CC, $CC, $7C, $0C, $F8,
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$C3, $18, $3C, $66, $66, $3C, $18, $00,
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$CC, $00, $CC, $CC, $CC, $CC, $78, $00,
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$18, $18, $7E, $C0, $C0, $7E, $18, $18,
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$38, $6C, $64, $F0, $60, $E6, $FC, $00,
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$CC, $CC, $78, $30, $FC, $30, $FC, $30,
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$F8, $CC, $CC, $FA, $C6, $CF, $C6, $C3,
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$0E, $1B, $18, $3C, $18, $18, $D8, $70,
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$1C, $00, $78, $0C, $7C, $CC, $76, $00,
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$38, $00, $70, $30, $30, $30, $78, $00,
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$00, $1C, $00, $78, $CC, $CC, $78, $00,
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$00, $1C, $00, $CC, $CC, $CC, $76, $00,
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$00, $F8, $00, $B8, $CC, $CC, $CC, $00,
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$FC, $00, $CC, $EC, $FC, $DC, $CC, $00,
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$3C, $6C, $6C, $3E, $00, $7E, $00, $00,
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$38, $6C, $6C, $38, $00, $7C, $00, $00,
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$18, $00, $18, $18, $30, $66, $3C, $00,
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$00, $00, $00, $FC, $C0, $C0, $00, $00,
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$00, $00, $00, $FC, $0C, $0C, $00, $00,
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$C6, $CC, $D8, $36, $6B, $C2, $84, $0F,
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$C3, $C6, $CC, $DB, $37, $6D, $CF, $03,
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$18, $00, $18, $18, $3C, $3C, $18, $00,
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$00, $33, $66, $CC, $66, $33, $00, $00,
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$00, $CC, $66, $33, $66, $CC, $00, $00,
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$22, $88, $22, $88, $22, $88, $22, $88,
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$55, $AA, $55, $AA, $55, $AA, $55, $AA,
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$DB, $F6, $DB, $6F, $DB, $7E, $D7, $ED,
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$18, $18, $18, $18, $18, $18, $18, $18,
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$18, $18, $18, $18, $F8, $18, $18, $18,
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$18, $18, $F8, $18, $F8, $18, $18, $18,
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$36, $36, $36, $36, $F6, $36, $36, $36,
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$00, $00, $00, $00, $FE, $36, $36, $36,
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$00, $00, $F8, $18, $F8, $18, $18, $18,
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$36, $36, $F6, $06, $F6, $36, $36, $36,
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$36, $36, $36, $36, $36, $36, $36, $36,
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$00, $00, $FE, $06, $F6, $36, $36, $36,
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$36, $36, $F6, $06, $FE, $00, $00, $00,
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$36, $36, $36, $36, $FE, $00, $00, $00,
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$18, $18, $F8, $18, $F8, $00, $00, $00,
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$00, $00, $00, $00, $F8, $18, $18, $18,
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$18, $18, $18, $18, $1F, $00, $00, $00,
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$18, $18, $18, $18, $FF, $00, $00, $00,
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$00, $00, $00, $00, $FF, $18, $18, $18,
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$18, $18, $18, $18, $1F, $18, $18, $18,
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$00, $00, $00, $00, $FF, $00, $00, $00,
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$18, $18, $18, $18, $FF, $18, $18, $18,
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$18, $18, $1F, $18, $1F, $18, $18, $18,
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$36, $36, $36, $36, $37, $36, $36, $36,
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$36, $36, $37, $30, $3F, $00, $00, $00,
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$00, $00, $3F, $30, $37, $36, $36, $36,
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$36, $36, $F7, $00, $FF, $00, $00, $00,
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$00, $00, $FF, $00, $F7, $36, $36, $36,
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$36, $36, $37, $30, $37, $36, $36, $36,
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$00, $00, $FF, $00, $FF, $00, $00, $00,
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|
$36, $36, $F7, $00, $F7, $36, $36, $36,
|
|
$18, $18, $FF, $00, $FF, $00, $00, $00,
|
|
$36, $36, $36, $36, $FF, $00, $00, $00,
|
|
$00, $00, $FF, $00, $FF, $18, $18, $18,
|
|
$00, $00, $00, $00, $FF, $36, $36, $36,
|
|
$36, $36, $36, $36, $3F, $00, $00, $00,
|
|
$18, $18, $1F, $18, $1F, $00, $00, $00,
|
|
$00, $00, $1F, $18, $1F, $18, $18, $18,
|
|
$00, $00, $00, $00, $3F, $36, $36, $36,
|
|
$36, $36, $36, $36, $FF, $36, $36, $36,
|
|
$18, $18, $FF, $18, $FF, $18, $18, $18,
|
|
$18, $18, $18, $18, $F8, $00, $00, $00,
|
|
$00, $00, $00, $00, $1F, $18, $18, $18,
|
|
$FF, $FF, $FF, $FF, $FF, $FF, $FF, $FF,
|
|
$00, $00, $00, $00, $FF, $FF, $FF, $FF,
|
|
$F0, $F0, $F0, $F0, $F0, $F0, $F0, $F0,
|
|
$0F, $0F, $0F, $0F, $0F, $0F, $0F, $0F,
|
|
$FF, $FF, $FF, $FF, $00, $00, $00, $00,
|
|
$00, $00, $76, $DC, $C8, $DC, $76, $00,
|
|
$00, $78, $CC, $F8, $CC, $F8, $C0, $C0,
|
|
$00, $FC, $CC, $C0, $C0, $C0, $C0, $00,
|
|
$00, $00, $FE, $6C, $6C, $6C, $6C, $00,
|
|
$FC, $CC, $60, $30, $60, $CC, $FC, $00,
|
|
$00, $00, $7E, $D8, $D8, $D8, $70, $00,
|
|
$00, $66, $66, $66, $66, $7C, $60, $C0,
|
|
$00, $76, $DC, $18, $18, $18, $18, $00,
|
|
$FC, $30, $78, $CC, $CC, $78, $30, $FC,
|
|
$38, $6C, $C6, $FE, $C6, $6C, $38, $00,
|
|
$38, $6C, $C6, $C6, $6C, $6C, $EE, $00,
|
|
$1C, $30, $18, $7C, $CC, $CC, $78, $00,
|
|
$00, $00, $7E, $DB, $DB, $7E, $00, $00,
|
|
$06, $0C, $7E, $DB, $DB, $7E, $60, $C0,
|
|
$38, $60, $C0, $F8, $C0, $60, $38, $00,
|
|
$78, $CC, $CC, $CC, $CC, $CC, $CC, $00,
|
|
$00, $7E, $00, $7E, $00, $7E, $00, $00,
|
|
$18, $18, $7E, $18, $18, $00, $7E, $00,
|
|
$60, $30, $18, $30, $60, $00, $FC, $00,
|
|
$18, $30, $60, $30, $18, $00, $FC, $00,
|
|
$0E, $1B, $1B, $18, $18, $18, $18, $18,
|
|
$18, $18, $18, $18, $18, $D8, $D8, $70,
|
|
$18, $18, $00, $7E, $00, $18, $18, $00,
|
|
$00, $76, $DC, $00, $76, $DC, $00, $00,
|
|
$38, $6C, $6C, $38, $00, $00, $00, $00,
|
|
$00, $00, $00, $18, $18, $00, $00, $00,
|
|
$00, $00, $00, $00, $18, $00, $00, $00,
|
|
$0F, $0C, $0C, $0C, $EC, $6C, $3C, $1C,
|
|
$58, $6C, $6C, $6C, $6C, $00, $00, $00,
|
|
$70, $98, $30, $60, $F8, $00, $00, $00,
|
|
$00, $00, $3C, $3C, $3C, $3C, $00, $00,
|
|
$00, $00, $00, $00, $00, $00, $00, $00
|
|
);
|
|
|
|
{$F+}
|
|
procedure Print_8x8_Mono( x, y : Int; c : char );
|
|
var
|
|
offset, i : Int;
|
|
bitm : PByte;
|
|
begin
|
|
offset := x + y*Vio_ScanLineWidth*8;
|
|
bitm := @Font_8x8[ ord(c)*8 ];
|
|
|
|
for i := 0 to 7 do
|
|
begin
|
|
Vio^[offset] := bitm^[i];
|
|
inc( offset, Vio_ScanLineWidth );
|
|
end;
|
|
end;
|
|
|
|
procedure Print_8x8_Gray( x, y : Int; c : char );
|
|
var
|
|
offset, i, bit : Int;
|
|
|
|
bitm : PByte;
|
|
begin
|
|
offset := ( x + y*Vio_ScanLineWidth )*8;
|
|
bitm := @font_8x8[ ord(c)*8 ];
|
|
|
|
for i := 0 to 7 do
|
|
begin
|
|
bit := $80;
|
|
while bit > 0 do
|
|
begin
|
|
if ( bit and bitm^[i] <> 0 ) then Vio^[offset] := $FF
|
|
else Vio^[offset] := $00;
|
|
bit := bit shr 1;
|
|
inc( offset );
|
|
end;
|
|
|
|
inc( offset, Vio_ScanLineWidth-8 );
|
|
end;
|
|
|
|
end;
|
|
{$F-}
|
|
|
|
function Set_Graph_Screen( mode : Int ): boolean;
|
|
begin
|
|
Set_Graph_Screen := False;
|
|
|
|
gcursor_x := 0;
|
|
gcursor_y := 0;
|
|
|
|
case mode of
|
|
|
|
Graphics_Mode_Mono : begin
|
|
if not Driver_Set_Graphics(mode) then exit;
|
|
gwindow_width := vio_ScanLineWidth;
|
|
gwindow_height := vio_Height div 8;
|
|
|
|
Print_8x8 := Print_8x8_Mono;
|
|
end;
|
|
|
|
Graphics_Mode_Gray : begin
|
|
if not Driver_Set_Graphics(mode) then exit;
|
|
gwindow_width := vio_ScanLineWidth div 8;
|
|
gwindow_height := vio_Height div 8;
|
|
|
|
Print_8x8 := Print_8x8_Gray;
|
|
end;
|
|
else
|
|
exit;
|
|
end;
|
|
|
|
Set_Graph_Screen := True;
|
|
end;
|
|
|
|
|
|
function Restore_Screen : boolean;
|
|
begin
|
|
gcursor_x := 0;
|
|
gcursor_y := 0;
|
|
|
|
gwindow_height := 0;
|
|
gwindow_width := 0;
|
|
|
|
Restore_Screen := Driver_Restore_Mode;
|
|
end;
|
|
|
|
procedure Display_Bitmap_On_Screen;
|
|
begin
|
|
Driver_Display_Bitmap( buff, line, col );
|
|
end;
|
|
|
|
procedure Goto_XY( x, y : Int );
|
|
begin
|
|
gcursor_x := x;
|
|
gcursor_y := y;
|
|
end;
|
|
|
|
procedure Print_Str( str : string );
|
|
var
|
|
i : Int;
|
|
begin
|
|
for i := 1 to length(str) do
|
|
begin
|
|
case str[i] of
|
|
|
|
#13 : begin
|
|
gcursor_x := 0;
|
|
inc( gcursor_y );
|
|
if gcursor_y > gwindow_height then gcursor_y := 0;
|
|
end;
|
|
else
|
|
Print_8x8( gcursor_x, gcursor_y, str[i] );
|
|
inc( gcursor_x );
|
|
if gcursor_x >= gwindow_width then
|
|
begin
|
|
gcursor_x := 0;
|
|
inc( gcursor_y );
|
|
if gcursor_y >= gwindow_height then gcursor_y := 0;
|
|
end
|
|
end
|
|
end
|
|
end;
|
|
|
|
procedure Print_XY( x, y : Int; str : string );
|
|
begin
|
|
Goto_XY( x, y );
|
|
Print_Str( str );
|
|
end;
|
|
|
|
end.
|
|
|