kolibrios-fun/programs/other/rtfread/trunk/bgifont.inc

610 lines
11 KiB
PHP
Raw Normal View History

; BGIFONT.INC v1.0 beta
;
; Written in pure assembler by Ivushkin Andrey aka Willow
;
; Created: December 16, 2004
;
; Last changed: August 27, 2006
;
; Compile with FASM
; BGI constants
BGI_NODRAW equ 0x10000
BGI_ITALIC equ 0x20000
BGI_BOLD equ 0x40000
BGI_HALEFT equ 0x0
BGI_HARIGHT equ 0x1000
BGI_HACENTER equ 0x2000
BGI_VABOTTOM equ 0x0
BGI_VATOP equ 0x4000
BGI_VACENTER equ 0x8000
BGI_FREE equ 0x80000000
BGI_HAMASK equ 0x3000
BGI_VAMASK equ 0xc000
; Freetext structure
struc BGIfree FontName,XY,Angle,ScaleX,ScaleY,StrPtr,StrLen,Color,Align
{
dd FontName ;0
dd XY ;4
dd Angle ;8
dd ScaleX ;12
dd ScaleY ;16
dd StrPtr ;20
dd StrLen ;24
dd Color ;28
dd Align ;32
}
macro BGIfont_GetID
{
call _BGIfont_GetID
}
macro BGIfont_Prepare
{
call _BGIfont_Prepare
}
macro BGIfont_Freetext
{
call _BGIfont_Freetext
}
macro BGIfont_Outtext
{
call _BGIfont_Outtext
}
macro _FI name,_size
{
db name
if BGI_LEVEL eq KERNEL
dw _size
end if
}
BGIfont_get2head:
shr ecx,28 ; font #
sub ecx,4
jb .exit2 ; invalid #
mov edi,[BGIfont_Ptr]
inc edi
cmp cl,[edi-1]
jae .exit2 ; # too large
jecxz .ex
.fnext:
mov edi,[edi+16]
loop .fnext
jmp .ex
.exit2:
xor edi,edi
.ex:
ret
macro dps2 _str
{
if LOAD_MSG eq 1
dps _str
end if
}
macro dph2 num,x,y
{
if BGI_LEVEL eq KERNEL
pusha
mov eax,0x00080100
mov ebx,num
mov ecx,x shl 16+y
mov edx,0xFF0000
call display_number
popa
end if
}
_BGIfont_GetID:
; in: edx-font name;
; out: eax-fontID, edi->BGIrec
push ecx edi
mov edi,[BGIfont_Ptr]
movzx ecx,byte[edi] ; ecx-font count
mov eax,ecx
inc edi ; edi->FontName
jecxz .ex
.fnext:
cmp edx,[edi]
jne .floop
sub eax,ecx
add eax,4
shl eax,28
jmp .ex
.floop:
mov edi,[edi+16]
loop .fnext
.num0:
xor eax,eax
.ex:
pop edi ecx
ret
_BGIfont_Prepare:
; in: edx-font name, edi->pointer to load fonts (fonts_count)
; out: eax-ID of new font loaded; eax=0 error
cmp [BGIfont_Ptr],0
jne .already
mov [BGIfont_Ptr],edi
.already:
pusha
mov edi,[BGIfont_Ptr]
movzx ecx,byte[edi] ; ecx-font count
mov eax,ecx
inc edi ; edi->FontName
jecxz .fload
.fnext:
cmp edx,[edi]
jne .loop
sub eax,ecx
inc eax
jmp .cr_id
.loop:
mov edi,[edi+16]
loop .fnext
.fload:
mov dword[.font],edx ; filename
mov esi,edi ; esi->FontName
mov [.dest],edi ; ptr to load font
; mov eax, 70
; mov ebx, .fontattr
; mcall
; test eax, eax
; ;jnz .fail
; dps2 '1'
; mov eax, [.fileattr+32]
;mov [.fsize], litt_end-litt_file
;mov ebx,.fontinfo
;mov eax,70
;mcall ; ebx - file size
mov ebx, litt_end-litt_file
mov edi, litt_file
mov [.dest],litt_file ; ptr to load font
cmp dword[edi],0x08084b50 ; 'PK',8,8
jne .fail
dps2 '2'
inc edi
mov eax,26 ; #EOF
mov ecx,253
cld
repne scasb ; skip Copyright
test ecx,ecx
jz .fail
dps2 '3'
cmp edx,[edi+2] ; FontName
jne .fail
dps2 '4'
movzx ecx,word[edi] ; HeaderSize
sub ebx,ecx ; Filesize-Headersize
movzx eax,word[edi+6] ; FontSize
cmp eax,ebx
jb .fail ; file truncated
add ecx,[.dest]
dps2 '5'
cmp byte[ecx],'+' ; ParPrefix
jne .fail
; font is valid, let's fill parameter table
dps2 '>'
mov [esi],edx ; FontName
mov edx,eax
add eax,ecx
mov [esi+16],eax ; Font EOF
movzx eax,word[ecx+5]
add eax,ecx
mov [esi+12],eax
lea edi,[esi+4] ; edi->CharsCount
lea esi,[ecx+1] ; esi->ParPrefix+1
xor eax,eax
lodsw
stosb ; CharsCount
inc esi
movsb ; FirstChar
add esi,3
lodsw
stosb ; UpperMargin
movsb ; LowerMargin
add esi,5 ; esi->offsets
mov eax,[esi]
push edi ; edi->Widths
; prepare moving data
add edi,12 ; edi->offsets
lea ecx,[edx-16]
rep movsb
pop edi ; edi->Widths
mov [edi+8],esi ; EOF
; mov eax,[edi]
movzx ecx,byte[edi-4] ; CharsCount
lea eax,[edi+12+ecx*2] ; eax->widths
stosd ; edi->FirstData
add eax,ecx
stosd ; edi->EOF
mov eax,[esp] ; eax->fonts_count
inc byte[eax] ; increase font counter
movzx eax,byte[eax]
.cr_id:
add eax,0x3 ; create unique ID
shl eax,28 ; to easy use in color(ecx)
jmp .exit
.fail:
xor eax,eax
.exit:
mov [esp+28],eax
popa
ret
.fontinfo:
dd 0
dd 0
dd 0
.fsize dd 0
.dest dd 0
.fontfullname:
db BGIFONT_PATH
.font db 'LITT.CHR',0
.fontattr:
dd 5
dd 0
dd 0
dd 0
dd .fileattr
db 0
dd .fontfullname
.fileattr rd 40/4
BGIfont_Coo:
; y->word[txt.y1], x->word[txt.x1]
fild [txt.y1] ;y
fmul st0,st0; y*y
fild [txt.x1] ;x
fmul st0,st0; x*x
faddp ; x*x+y*y
fsqrt ; sqrt, angle
fild [txt.y1];y
fabs
fild [txt.x1] ; x
fabs
fpatan ; arctg(y/x)
.skip:
cmp [txt.x1],0
jge .xplus
fchs
fadd st0,st3
.xplus:
cmp [txt.y1],0
jge .yplus
fchs
.yplus:
fadd st0,st2
fsincos
fmul st0,st2
fiadd [txt.x0]
fistp [txt.x1] ; x=r*cos a
fmulp ; y=r*sin a,angle
fiadd [txt.y0]
fistp [txt.y1]
ret
_BGIfont_Freetext:
; in: ebx-BGIfree structure
; out: eax-new drawing coords
mov edx,[ebx]
call _BGIfont_GetID
test eax,eax
jnz .fexists
ret
.fexists:
pusha
fninit
fldpi
fld [pi180]
fimul dword[ebx+8]
fst [BGIangle]
mov esi,[ebx+28]
and esi,0xffffff
add esi,eax
mov eax,[ebx+32]
and [deform],0
test eax,BGI_ITALIC
jz .norm
mov [deform],dword 0.4
.norm:
mov ebp,eax
or ebp,BGI_FREE
mov eax,[ebx+12]
mov [Xscale],eax
mov eax,[ebx+16]
mov [Yscale],eax
mov ecx,[ebx+20]
mov edx,ebp
and edx,BGI_FREE+BGI_VAMASK+BGI_HAMASK
add edx,[ebx+24]
mov eax,[ebx+4]
mov ebx,esi
add ebx,0x6000000
mov [esp+4],edx
mov [esp+20],ecx
jmp txt
pi180 dd 0.017453
_BGIfont_Outtext:
; in: ebx-[x][y], ecx-color, edx-string, esi-length
pusha
mov ebp,esi
if ~ BGI_LEVEL eq KERNEL
mov eax,ebx
mov ebx,ecx
mov ecx,edx
mov edx,esi
end if
; in: eax-[x][y], ebx-color, ecx-string, edx-length
txt:
if ~ BGI_LEVEL eq KERNEL
if BGI_WINDOW_CLIP eq 1
pusha
mov eax,9
mov ebx,BGI_PRC_INFO
mov ecx,-1
mcall
popa
end if
end if
mov [.y0],ax
shr eax,16
mov [.x0],ax
mov ecx,ebx ; color
and ebx,0xfffffff
mov [.color],ebx
call BGIfont_get2head
test edi,edi
jz .exit
mov ecx,[esp+4]; str length
mov esi,[esp+20]; str ptr
movzx eax,byte[edi+5]
push ecx
and ecx,0xff
jnz .lenok
add esp,4
jmp .ex2
.lenok:
pusha
push dword[txt.y0]
and dword[txt.y0],0
xor edx,edx
mov ebx,[edi+8]
.next:
call txt.BGIfont_GetChar
movzx eax,byte[ebx+eax]
add edx,eax
loop .next
mov ecx,edx ; ecx - x size
movzx dx,byte[edi+6]
mov [BGIheight],dx
mov ebx,[esp+36]
and ebx,BGI_HAMASK
cmp ebx,BGI_HARIGHT
je .nova
ja .subv
xor ecx,ecx
jmp .nova
.subv:
shr cx,1
.nova:
mov ebx,[esp+36]
and ebx,BGI_VAMASK
cmp ebx,BGI_VATOP
je .def
ja .subh
xor edx,edx
jmp .def
.subh:
shr dx,1
.def:
call txt.BGIfont_Deform
pop dword[txt.y0]
popa
pop ebx
mov ax,[txt.y1]
sub [txt.y0],ax
mov ax,[txt.x1]
sub [txt.x0],ax
xor eax,eax
cld
.mloop:
push [.y0]
pop [.y]
push [.x0]
pop [.x]
call .BGIfont_GetChar
push esi
lea esi,[edi+20] ; offset
movzx edx,word[esi+eax*2] ; ofs1
add edx,[edi+12]
inc eax
cmp al,[edi+4]
je .eof
movzx eax,word[esi+eax*2]; ofs2
add eax,[edi+12]
jmp .prc_vec
.eof:
mov eax,[edi+16] ; ofs2=eof
.prc_vec: ; edx-vec cmd ifs, eax-cmd limit
mov [.vec_end],eax
push ecx
.vec_loop:
mov ax,word[edx]
push edx
mov ecx,eax
and eax,0x8080 ; op
and ecx,0x7f ; xx
mov edx,[edx+1]
and edx,0x7f ; yy
cmp edx,63
jbe .positive
sub edx,128 ; yy-=128
.positive:
cmp ecx,63
jbe .positive2
sub ecx,128 ; xx-=128
.positive2:
call .BGIfont_Deform
cmp eax,0x8080
jne .noline
test ebp,BGI_NODRAW
jnz .noline
; draw vector
if ~ BGI_LEVEL eq KERNEL
push eax
mov ebx,dword[.x1]
mov ecx,dword[.y1]
if BGI_WINDOW_CLIP eq 1
movzx eax,[.x]
cmp eax,dword[BGI_PRC_INFO+42]
ja .nobold
movzx eax,[.y]
cmp eax,dword[BGI_PRC_INFO+46]
ja .nobold
xor eax,eax
cmp ax,bx
jg .nobold
cmp ax,cx
jg .nobold
end if
mov edx,[.color]
; \begin{diamond}[18.08.2006]
; starting from K0530 kernel interprets flag 0x1000000 as
; negate existing pixels colors, disregarding passed color
; we do not want this
and edx, 0xFFFFFF
; \end{diamond}[18.08.2006]
mov eax,38
mcall
test ebp,BGI_BOLD
jz .nobold
test ebp,BGI_FREE
jnz .free5
.free5:
add ebx,1 shl 16+1
mcall
.nobold:
pop eax
else
pusha
mov eax,dword[.x1]
mov ebx,dword[.y1]
mov ecx,[.color]
; call syscall_drawline
test dword[esp+8],BGI_BOLD
jz .nobold
add eax,1 shl 16+1
; call syscall_drawline
.nobold:
popa
end if
.noline:
pop edx
test eax,eax
je .eovecs ; op=0
push [.y1]
pop [.y]
push [.x1]
pop [.x]
add edx,2
cmp edx,[.vec_end]
jb .vec_loop
.eovecs:
pop ecx esi
push [.y]
pop [.y0]
push [.x]
pop [.x0]
loop .mloop1
jmp .exit
.mloop1:
jmp .mloop
.exit:
mov eax,dword[.y0]
mov [esp+28],eax
.ex2:
popa
ret
.BGIfont_Deform:
test ebp,BGI_FREE
jnz .free0
movzx ebx,byte[.color+3] ;ebx=scale
imul ecx,ebx
add ecx,2
shr ecx,2
imul edx,ebx
add edx,2
shr edx,2
neg edx
mov [.x1],cx
mov [.y1],dx
jmp .add
.free0:
mov [.x1],cx
mov [.y1],dx
fild [.y1]
fld st0
fmul [Yscale]
fchs
fistp [.y1]
fmul [deform]
fiadd [.x1]
fmul [Xscale]
fistp [.x1]
cmp [BGIangle],0
je .add
call BGIfont_Coo
jmp .eax
.add:
mov cx,[.x0]
add [.x1],cx
mov cx,[.y0]
add [.y1],cx
.eax:
ret
.BGIfont_GetChar:
; in: esi -> string; edi -> BGIrec
; out: esi -> next char; al - char obtained
lodsb ; al - char from str
sub al,[edi+5]
jb .out
cmp al,[edi+4]
jb .in
.out:
xor al,al ; al - 1st symbol available
.in:
ret
.y0 dw ?
.x0 dw ?
.x1 dw ?
.x dw ?
.y1 dw ?
.y dw ?
.color dd ?
.vec_end dd ?
BGIfont_Ptr dd 0
BGIheight dw ?
deform dd ?
BGIangle dd ?
Xscale dd ?
Yscale dd ?