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txtscrio.pas
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unit TxtScrIO;
{$S-,Q-,R-,V-,B-,X+}
{$PACKRECORDS 1}
interface
const
SCREEN_RES_x: Word = 720;
SCREEN_RES_y: Word = 480;
MAX_COLUMNS: Byte = 90;
MAX_ROWS: Byte = 40;
MAX_TRACKS: Byte = 5;
MAX_ORDER_COLS: Byte = 9;
MAX_PATTERN_ROWS: Byte = 18;
INSCTRL_xshift: Byte = 0;
INSCTRL_yshift: Shortint = 0;
INSEDIT_yshift: Byte = 0;
PATTORD_xshift: Byte = 0;
GOTOXY_xshift: Byte = 0;
const
MAX_SCREEN_MEM_SIZE = 180*60*2;
SCREEN_MEM_SIZE: Longint = MAX_SCREEN_MEM_SIZE;
type
tSCREEN_MEM = array[0..PRED(MAX_SCREEN_MEM_SIZE)] of Byte;
tSCREEN_MEM_PTR = ^tSCREEN_MEM;
var
temp_screen: tSCREEN_MEM;
temp_screen2: tSCREEN_MEM;
screen_backup: tSCREEN_MEM;
scr_backup: tSCREEN_MEM;
scr_backup2: tSCREEN_MEM;
screen_mirror: tSCREEN_MEM;
screen_emulator: tSCREEN_MEM;
centered_frame_vdest: tSCREEN_MEM_PTR;
text_screen_shadow: tSCREEN_MEM;
const
screen_ptr: Pointer = Addr(text_screen_shadow);
ptr_temp_screen: Pointer = Addr(temp_screen);
ptr_temp_screen2: Pointer = Addr(temp_screen2);
ptr_screen_backup: Pointer = Addr(screen_backup);
ptr_scr_backup: Pointer = Addr(scr_backup);
ptr_scr_backup2: Pointer = Addr(scr_backup2);
ptr_screen_mirror: Pointer = Addr(screen_mirror);
ptr_screen_emulator: Pointer = Addr(screen_emulator);
const
move_to_screen_data: Pointer = NIL;
move_to_screen_area: array[1..4] of Byte = (0,0,0,0);
move_to_screen_routine: procedure = NIL;
const
program_screen_mode: Byte = 0;
const
MaxLn: Byte = 0;
MaxCol: Byte = 0;
hard_maxcol: Byte = 0;
hard_maxln: Byte = 0;
work_maxcol: Byte = 0;
work_maxln: Byte = 0;
scr_font_width: Byte = 0;
scr_font_height: Byte = 0;
const
area_x1: Byte = 0;
area_y1: Byte = 0;
area_x2: Byte = 0;
area_y2: Byte = 0;
scroll_pos0: Byte = BYTE(NOT 0);
scroll_pos1: Byte = BYTE(NOT 0);
scroll_pos2: Byte = BYTE(NOT 0);
scroll_pos3: Byte = BYTE(NOT 0);
scroll_pos4: Byte = BYTE(NOT 0);
var
cursor_backup: Longint;
const
Black = $00; DGray = $08;
Blue = $01; LBlue = $09;
Green = $02; LGreen = $0a;
Cyan = $03; LCyan = $0b;
Red = $04; LRed = $0c;
Magenta = $05; LMagenta = $0d;
Brown = $06; Yellow = $0e;
LGray = $07; White = $0f;
Blink = $80;
procedure ShowStr(dest: tSCREEN_MEM_PTR; x,y: Byte; str: String; attr: Byte);
procedure ShowVStr(dest: tSCREEN_MEM_PTR; x,y: Byte; str: String; attr: Byte);
procedure ShowCStr(dest: tSCREEN_MEM_PTR; x,y: Byte; str: String; atr1,atr2: Byte);
procedure ShowCStr2(dest: tSCREEN_MEM_PTR; x,y: Byte; str: String; atr1,atr2: Byte);
procedure ShowVCStr(dest: tSCREEN_MEM_PTR; x,y: Byte; str: String; atr1,atr2: Byte);
procedure ShowVCStr2(dest: tSCREEN_MEM_PTR; x,y: Byte; str: String; atr1,atr2: Byte);
procedure ShowC3Str(dest: tSCREEN_MEM_PTR; x,y: Byte; str: String; atr1,atr2,atr3: Byte);
procedure ShowVC3Str(dest: tSCREEN_MEM_PTR; x,y: Byte; str: String; atr1,atr2,atr3: Byte);
procedure ShowC4Str(dest: tSCREEN_MEM_PTR; x,y: Byte; str: String; atr1,atr2,atr3,atr4: Byte);
procedure show_str(xpos,ypos: Byte; str: String; color: Byte);
procedure show_cstr(xpos,ypos: Byte; str: String; attr1,attr2: Byte);
procedure show_cstr_alt(xpos,ypos: Byte; str: String; attr1,attr2: Byte);
procedure show_vstr(xpos,ypos: Byte; str: String; color: Byte);
procedure show_vcstr(xpos,ypos: Byte; str: String; attr1,attr2: Byte);
function CStrLen(str: String): Byte;
function CStr2Len(str: String): Byte;
function C3StrLen(str: String): Byte;
procedure ScreenMemCopy(source,dest: tSCREEN_MEM_PTR);
procedure move2screen;
procedure move2screen_alt;
procedure TxtScrIO_Init;
function is_default_screen_mode: Boolean;
{$IFDEF GO32V2}
function is_VESA_emulated_mode: Boolean;
function get_VESA_emulated_mode_idx: Byte;
{$ENDIF}
function is_scrollable_screen_mode: Boolean;
type
tFRAME_SETTING = Record
shadow_enabled,
wide_range_type,
zooming_enabled,
update_area: Boolean;
end;
const
fr_setting: tFRAME_SETTING =
(shadow_enabled: TRUE;
wide_range_type: FALSE;
zooming_enabled: FALSE;
update_area: TRUE);
procedure Frame(dest: tSCREEN_MEM_PTR; x1,y1,x2,y2,atr1: Byte;
title: String; atr2: Byte; border: String);
function WhereX: Byte;
function WhereY: Byte;
procedure GotoXY(x,y: Byte);
function GetCursor: Longint;
procedure SetCursor(cursor: Longint);
procedure ThinCursor;
procedure WideCursor;
procedure HideCursor;
function GetCursorShape: Word;
procedure SetCursorShape(shape: Word);
const
v_seg: Word = $0b800;
v_ofs: Word = 0;
v_mode: Byte = $03;
{$IFDEF GO32V2}
var
DispPg: Byte;
type
tCUSTOM_VIDEO_MODE = 0..52;
function iVGA: Boolean;
procedure initialize;
procedure ResetMode;
procedure SetCustomVideoMode(vmode: tCUSTOM_VIDEO_MODE);
procedure GetRGBitem(color: Byte; var red,green,blue: Byte);
procedure SetRGBitem(color: Byte; red,green,blue: Byte);
procedure WaitRetrace;
procedure GetPalette(var pal; first,last: Word);
procedure SetPalette(var pal; first,last: Word);
type
tFADE = (first,fadeOut,fadeIn);
tDELAY = (fast,delayed);
type
tFADE_BUF = Record
action: tFADE;
pal0: array[0..255] of Record r,g,b: Byte end;
pal1: array[0..255] of Record r,g,b: Byte end;
end;
const
fade_speed: Byte = 63;
procedure VgaFade(var data: tFADE_BUF; fade: tFADE; delay: tDELAY);
procedure RefreshEnable;
procedure RefreshDisable;
procedure Split2Static;
procedure SplitScr(line: Word);
procedure SetSize(columns,lines: Word);
procedure SetTextDisp(x,y: Word);
procedure set_vga_txtmode_80x25;
procedure set_svga_txtmode_100x38;
procedure set_svga_txtmode_128x48;
procedure set_custom_svga_txtmode;
type
VGA_REGISTER = Record
port: Word;
idx: Byte;
val: Byte;
end;
type
VGA_REG_DATA = array[1..29] of VGA_REGISTER;
const
svga_txtmode_cols: Byte = 100;
svga_txtmode_rows: Byte = 37;
svga_txtmode_regs: VGA_REG_DATA = (
(port: $3c2; idx: $00; val: $06b), // Miscellaneous output
(port: $3d4; idx: $00; val: $070), // Horizontal total
(port: $3d4; idx: $01; val: $063), // Horizontal display enable end
(port: $3d4; idx: $02; val: $064), // Horizontal blank start
(port: $3d4; idx: $03; val: $082), // Horizontal blank end
(port: $3d4; idx: $04; val: $065), // Horizontal retrace start
(port: $3d4; idx: $05; val: $082), // Horizontal retrace end
(port: $3d4; idx: $06; val: $070), // Vertical total
(port: $3d4; idx: $07; val: $0f0), // Overflow register
(port: $3d4; idx: $08; val: $000), // Preset row scan
(port: $3d4; idx: $09; val: $04f), // Maximum scan line/char height
(port: $3d4; idx: $10; val: $05b), // Vertical retrace start
(port: $3d4; idx: $11; val: $08c), // Vertical retrace end
(port: $3d4; idx: $12; val: $04f), // Vertical display enable end
(port: $3d4; idx: $13; val: $03c), // Offset/logical width
(port: $3d4; idx: $14; val: $000), // Underline location
(port: $3d4; idx: $15; val: $058), // Vertical blank start
(port: $3d4; idx: $16; val: $070), // Vertical blank end
(port: $3d4; idx: $17; val: $0a3), // Mode control
(port: $3c4; idx: $01; val: $001), // Clock mode register
(port: $3c4; idx: $03; val: $000), // Character generator select
(port: $3c4; idx: $04; val: $000), // Memory mode register
(port: $3ce; idx: $05; val: $010), // Mode register
(port: $3ce; idx: $06; val: $00e), // Miscellaneous register
(port: $3c0; idx: $10; val: $002), // Mode control
(port: $3c0; idx: $11; val: $000), // Screen border color
(port: $3c0; idx: $12; val: $00f), // Color plane enable
(port: $3c0; idx: $13; val: $000), // Horizontal panning
(port: $3c0; idx: $14; val: $000)); // Color select
{$ENDIF}
implementation
uses
{$IFDEF GO32V2}
CRT,GO32,
{$ENDIF}
AdT2unit,AdT2sys,AdT2ext2,
DialogIO,ParserIO;
procedure show_str(xpos,ypos: Byte; str: String; color: Byte);
var
x11,x12,x21,x22,y11,y21: Byte;
index: Byte;
begin
asm
xor ebx,ebx
xor ecx,ecx
mov edi,dword ptr [screen_ptr]
mov edx,edi
lea esi,[str]
lodsb
mov cl,al
or ecx,ecx
jz @@7
mov al,area_x1
mov x11,al
inc x11
mov x12,al
add x12,2
mov al,area_x2
mov x21,al
inc x21
mov x22,al
add x22,2
mov al,area_y1
mov y11,al
inc y11
mov al,area_y2
mov y21,al
inc y21
mov index,1
@@1: mov edi,edx
xor bx,bx
mov bl,xpos
add bl,index
sub bl,2
mov ah,ypos
dec ah
mov al,MaxCol
mul ah
add bx,ax
shl bx,1
mov al,xpos
add al,index
dec al
mov ah,ypos
cmp al,x12
jnae @@2
cmp al,x22
jnbe @@2
cmp ah,y21
jne @@2
jmp @@3
@@2: cmp al,x21
jnae @@4
cmp al,x22
jnbe @@4
cmp ah,y11
jnae @@4
cmp ah,y21
jnbe @@4
@@3: add edi,ebx
movsb
jmp @@6
@@4: cmp al,area_x1
jnae @@5
cmp al,area_x2
jnbe @@5
cmp ah,area_y1
jnae @@5
cmp ah,area_y2
jnbe @@5
lodsb
jmp @@6
@@5: add edi,ebx
lodsb
mov ah,color
stosw
@@6: inc index
cmp index,cl
jbe @@1
@@7:
end;
end;
procedure show_cstr(xpos,ypos: Byte; str: String; attr1,attr2: Byte);
var
x11,x12,x21,x22,y11,y21: Byte;
index,color1,color2: Byte;
begin
asm
mov al,attr1
mov color1,al
mov al,attr2
mov color2,al
xor ebx,ebx
xor ecx,ecx
mov edi,dword ptr [screen_ptr]
mov edx,edi
lea esi,[str]
lodsb
mov cl,al
or ecx,ecx
jz @@7
mov al,area_x1
mov x11,al
inc x11
mov x12,al
add x12,2
mov al,area_x2
mov x21,al
inc x21
mov x22,al
add x22,2
mov al,area_y1
mov y11,al
inc y11
mov al,area_y2
mov y21,al
inc y21
mov index,1
@@1: mov edi,edx
xor bx,bx
mov bl,xpos
add bl,index
sub bl,2
mov ah,ypos
dec ah
mov al,MaxCol
mul ah
add bx,ax
shl bx,1
mov al,xpos
add al,index
dec al
mov ah,ypos
cmp al,x12
jnae @@2
cmp al,x22
jnbe @@2
cmp ah,y21
jne @@2
jmp @@3
@@2: cmp al,x21
jnae @@4
cmp al,x22
jnbe @@4
cmp ah,y11
jnae @@4
cmp ah,y21
jnbe @@4
@@3: add edi,ebx
@@3a: lodsb
cmp al,'~'
jnz @@3b
push eax
mov al,color1
mov ah,color2
xchg al,ah
mov color1,al
mov color2,ah
pop eax
dec cl
cmp index,cl
jbe @@3a
cmp al,'~'
jz @@7
@@3b: stosb
jmp @@6
@@4: cmp al,area_x1
jnae @@5
cmp al,area_x2
jnbe @@5
cmp ah,area_y1
jnae @@5
cmp ah,area_y2
jnbe @@5
@@4a: lodsb
cmp al,'~'
jnz @@6
push eax
mov al,color1
mov ah,color2
xchg al,ah
mov color1,al
mov color2,ah
pop eax
dec cl
cmp index,cl
jbe @@4a
jmp @@7
@@5: add edi,ebx
@@5a: lodsb
cmp al,'~'
jnz @@5b
push eax
mov al,color1
mov ah,color2
xchg al,ah
mov color1,al
mov color2,ah
pop eax
dec cl
cmp index,cl
jbe @@5a
jmp @@7
@@5b: mov ah,color1
stosw
@@6: inc index
cmp index,cl
jbe @@1
@@7:
end;
end;
procedure show_cstr_alt(xpos,ypos: Byte; str: String; attr1,attr2: Byte);
var
x11,x12,x21,x22,y11,y21: Byte;
index,color1,color2: Byte;
begin
asm
mov al,attr1
mov color1,al
mov al,attr2
mov color2,al
xor ebx,ebx
xor ecx,ecx
mov edi,dword ptr [screen_ptr]
mov edx,edi
lea esi,[str]
lodsb
mov cl,al
or ecx,ecx
jz @@7
mov al,area_x1
mov x11,al
inc x11
mov x12,al
add x12,2
mov al,area_x2
mov x21,al
inc x21
mov x22,al
add x22,2
mov al,area_y1
mov y11,al
inc y11
mov al,area_y2
mov y21,al
inc y21
mov index,1
@@1: mov edi,edx
xor bx,bx
mov bl,xpos
add bl,index
sub bl,2
mov ah,ypos
dec ah
mov al,MaxCol
mul ah
add bx,ax
shl bx,1
mov al,xpos
add al,index
dec al
mov ah,ypos
cmp al,x12
jnae @@2
cmp al,x22
jnbe @@2
cmp ah,y21
jne @@2
jmp @@3
@@2: cmp al,x21
jnae @@4
cmp al,x22
jnbe @@4
cmp ah,y11
jnae @@4
cmp ah,y21
jnbe @@4
@@3: add edi,ebx
@@3a: lodsb
cmp al,10
jnz @@3b
push eax
mov al,color1
mov ah,color2
xchg al,ah
mov color1,al
mov color2,ah
pop eax
dec cl
cmp index,cl
jbe @@3a
cmp al,10
jz @@7
@@3b: stosb
jmp @@6
@@4: cmp al,area_x1
jnae @@5
cmp al,area_x2
jnbe @@5
cmp ah,area_y1
jnae @@5
cmp ah,area_y2
jnbe @@5
@@4a: lodsb
cmp al,10
jnz @@6
push eax
mov al,color1
mov ah,color2
xchg al,ah
mov color1,al
mov color2,ah
pop eax
dec cl
cmp index,cl
jbe @@4a
jmp @@7
@@5: add edi,ebx
@@5a: lodsb
cmp al,10
jnz @@5b
push eax
mov al,color1
mov ah,color2
xchg al,ah
mov color1,al
mov color2,ah
pop eax
dec cl
cmp index,cl
jbe @@5a
jmp @@7
@@5b: mov ah,color1
stosw
@@6: inc index
cmp index,cl
jbe @@1
@@7:
end;
end;
procedure show_vstr(xpos,ypos: Byte; str: String; color: Byte);
var
x11,x12,x21,x22,y11,y21: Byte;
index: Byte;
begin
asm
xor ebx,ebx
xor ecx,ecx
mov edi,dword ptr [screen_ptr]
mov edx,edi
lea esi,[str]
lodsb
mov cl,al
or ecx,ecx
jz @@7
mov al,area_x1
mov x11,al
inc x11
mov x12,al
add x12,2
mov al,area_x2
mov x21,al
inc x21
mov x22,al
add x22,2
mov al,area_y1
mov y11,al
inc y11
mov al,area_y2
mov y21,al
inc y21
mov index,1
@@1: mov edi,edx
xor bx,bx
mov bl,xpos
dec bl
mov ah,ypos
add ah,index
sub ah,2
mov al,MaxCol
mul ah
add bx,ax
shl bx,1
mov al,xpos
mov ah,ypos
add ah,index
dec ah
cmp al,x12
jnae @@2
cmp al,x22
jnbe @@2
cmp ah,y21
jne @@2
jmp @@3
@@2: cmp al,x21
jnae @@4
cmp al,x22
jnbe @@4
cmp ah,y11
jnae @@4
cmp ah,y21
jnbe @@4
@@3: add edi,ebx
movsb
jmp @@6
@@4: cmp al,area_x1
jnae @@5
cmp al,area_x2
jnbe @@5
cmp ah,area_y1
jnae @@5
cmp ah,area_y2
jnbe @@5
lodsb
jmp @@6
@@5: add edi,ebx
lodsb
mov ah,color
stosw
@@6: inc index
cmp index,cl
jbe @@1
@@7:
end;
end;
procedure show_vcstr(xpos,ypos: Byte; str: String; attr1,attr2: Byte);
var
x11,x12,x21,x22,y11,y21: Byte;
index,color1,color2: Byte;
begin
asm
mov al,attr1
mov color1,al
mov al,attr2
mov color2,al
xor ebx,ebx
xor ecx,ecx
mov edi,dword ptr [screen_ptr]
mov edx,edi
lea esi,[str]
lodsb
mov cl,al
or ecx,ecx
jz @@7
mov al,area_x1
mov x11,al
inc x11
mov x12,al
add x12,2
mov al,area_x2
mov x21,al
inc x21
mov x22,al
add x22,2
mov al,area_y1
mov y11,al
inc y11
mov al,area_y2
mov y21,al
inc y21
mov index,1
@@1: mov edi,edx
xor bx,bx
mov bl,xpos
dec bl
mov ah,ypos
add ah,index
sub ah,2
mov al,MaxCol
mul ah
add bx,ax
shl bx,1
mov al,xpos
mov ah,ypos
add ah,index
dec ah
cmp al,x12
jnae @@2
cmp al,x22
jnbe @@2
cmp ah,y21
jne @@2
jmp @@3
@@2: cmp al,x21
jnae @@4
cmp al,x22
jnbe @@4
cmp ah,y11
jnae @@4
cmp ah,y21
jnbe @@4
@@3: add edi,ebx
@@3a: lodsb
cmp al,'~'
jnz @@3b
push eax
mov al,color1
mov ah,color2
xchg al,ah
mov color1,al
mov color2,ah
pop eax
dec cl
cmp index,cl
jbe @@3a
cmp al,'~'
jz @@7
@@3b: stosb
jmp @@6
@@4: cmp al,area_x1
jnae @@5
cmp al,area_x2
jnbe @@5
cmp ah,area_y1
jnae @@5
cmp ah,area_y2
jnbe @@5
@@4a: lodsb
cmp al,'~'
jnz @@6
push eax
mov al,color1
mov ah,color2
xchg al,ah
mov color1,al
mov color2,ah
pop eax
dec cl
cmp index,cl
jbe @@4a
jmp @@7
@@5: add edi,ebx
@@5a: lodsb
cmp al,'~'
jnz @@5b
push eax
mov al,color1
mov ah,color2
xchg al,ah
mov color1,al
mov color2,ah
pop eax
dec cl
cmp index,cl
jbe @@5a
jmp @@7
@@5b: mov ah,color1
stosw
@@6: inc index
cmp index,cl
jbe @@1
@@7:
end;
end;
var
absolute_pos: Word;
procedure DupChar; assembler;
asm
pushad { IN/ al -column }
xor ebx,ebx { ah -line }
xchg ax,bx { dl -character }
xor eax,eax { dh -attribute }
xchg ax,bx { ecx -count }
mov bl,al { edi -ptr. to write }
mov al,MaxCol
mul ah
add ax,bx
mov bl,MaxCol
sub ax,bx
dec ax
shl ax,1
jecxz @@1
add edi,eax
xchg ax,dx
rep stosw
xchg ax,dx
@@1: mov absolute_pos,ax
popad
end;
procedure ShowStr(dest: tSCREEN_MEM_PTR; x,y: Byte; str: String; attr: Byte);
begin
asm
mov edi,dword ptr [dest]
lea esi,[str]
mov al,x
mov ah,y
xor ecx,ecx
call DupChar
xor edx,edx
mov dx,absolute_pos
lodsb
mov cl,al
jecxz @@2
add edi,edx
mov ah,attr
@@1: lodsb
stosw
loop @@1
@@2:
end;
end;
procedure ShowVStr(dest: tSCREEN_MEM_PTR; x,y: Byte; str: String; attr: Byte);
begin
asm
mov al,MaxCol
dec al
xor ah,ah
xor ebx,ebx
mov bl,2
mul bl
mov bx,ax
mov edi,dword ptr [dest]
lea esi,[str]
mov al,x
mov ah,y
xor ecx,ecx
call DupChar
xor edx,edx
mov dx,absolute_pos
lodsb
mov cl,al
jecxz @@2
add edi,edx
mov ah,attr
@@1: lodsb
stosw
add edi,ebx
loop @@1
@@2:
end;
end;
procedure ShowCStr(dest: tSCREEN_MEM_PTR; x,y: Byte; str: String; atr1,atr2: Byte);
begin
asm
lea esi,[str]
mov edi,dword ptr [dest]
lodsb
xor ecx,ecx
mov cl,al
jecxz @@3
push ecx
mov al,x
mov ah,y
xor ecx,ecx
call DupChar
xor edx,edx
mov dx,absolute_pos
pop ecx
add edi,edx
mov ah,atr1
mov bh,atr2
@@1: lodsb
cmp al,'~'
jz @@2
stosw
loop @@1
jmp @@3
@@2: xchg ah,bh
loop @@1
@@3:
end;
end;
procedure ShowCStr2(dest: tSCREEN_MEM_PTR; x,y: Byte; str: String; atr1,atr2: Byte);
begin
asm
lea esi,[str]
mov edi,dword ptr [dest]
lodsb
xor ecx,ecx
mov cl,al
jecxz @@3
push ecx
mov al,x
mov ah,y
xor ecx,ecx
call DupChar
xor edx,edx
mov dx,absolute_pos
pop ecx
add edi,edx
mov ah,atr1
mov bh,atr2
@@1: lodsb
cmp al,'"'
jz @@2
stosw
loop @@1
jmp @@3
@@2: xchg ah,bh
loop @@1
@@3:
end;
end;
procedure ShowVCStr(dest: tSCREEN_MEM_PTR; x,y: Byte; str: String; atr1,atr2: Byte);
begin
asm
mov al,MaxCol
dec al
xor ah,ah
mov bl,2
mul bl
mov bx,ax
lea esi,[str]
mov edi,dword ptr [dest]
lodsb
xor ecx,ecx
mov cl,al
jecxz @@3
push ecx
mov al,x
mov ah,y
xor ecx,ecx
call DupChar
xor edx,edx
mov dx,absolute_pos
pop ecx
add edi,edx
mov dx,bx
mov ah,atr1
mov bh,atr2
@@1: lodsb
cmp al,'~'
jz @@2
stosw