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