fonts

[ragdog]

hi guys

how can i create such png fonts and do i have to observe the distances if i work with a photoprogramm?
i have found a source in masm32 wich uses these kind of fonts

can your help me

ragdog

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[Mark Jones]

Hi ragdog. What is probably happening here is the .png is treated as a bitmap, and each "character" is copied into a representative bitmap of a character of the alphabet. These then, are placed and moved around the screen using calls to BitBlt or a related function, which basically moves these bitmaps around the screen. This is a graphics function, and has very little to do with an actual font. Do a Win32.hlp search (or MSDN) for BitBlt, PlgBlt, StretchBlt, or similar. The bitmap is probably made using a bitmap font creation program... google for "bitmap font creator" or "sprite font" or similar.

I'm sure some of us would like to see this code. Could you share the link?

[ragdog]

hi

here is the source

.data
CHAR_W EQU 8
CHAR_H EQU 14

fTable db '!"#$% `()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\]',0
     
t_sz =$-fTable 

pText db "test xyz",0
     

char_w_f REAL4 8.0

Yline REAL4 14.0


srcRect RECT <0,0,0,CHAR_H>
start_pos REAL4 10.0f
start_y_pos REAL4 130.0
fontPosition   D3DXVECTOR3 <10.0f, 130.0f, 0.0f>
.code
font3d proc
                pushad
               
                    mov esi,offset pText
       next_char:
                    lodsb
                    or al,al
                    jz _ok
                    cmp al,13
                    jne @F
                    fld Yline
                    fadd fontPosition.y
                    fstp fontPosition.y
                   
                    fld start_pos
                    fstp fontPosition.x
                   
                    jmp next_char
                   
                    @@:
                    mov edi,offset fTable
                    mov edx,edi
                    mov ecx,t_sz
                    repne scasb
                    jne _ok
                    dec edi
                    sub edi,edx
                    mov eax,CHAR_W
                    mul edi
                    mov srcRect.left,eax
                    mov srcRect.right,eax
                    add srcRect.right,CHAR_W
     
     
                   d3dxspr Begin,mSprite,D3DXSPRITE_ALPHABLEND
                   d3dxspr Draw,mSprite,d3font,addr srcRect,0,addr fontPosition,-1
                   d3dxspr End1,mSprite
     
                   fld fontPosition.x
                   fadd char_w_f
                   fstp fontPosition.x
     
     
                   jmp next_char
                   
                    _ok:
     
     
                    fld start_pos
                    fstp fontPosition.x   
                    fld start_y_pos
                    fstp fontPosition.y
                    popad
                    ret
font3d endp

[Mark Jones]

Oh, this is Direct3D. MASM32 currently does not contain the prototypes or libraries for the "d3dxspr" function, however, Siekmanski has posted a DX9 package which does (in this thread.) Are you using something like this? Just curious, only a few people here have experimented with D3D.

[hoverlees]

If each character has the same width,may be we can use  ImageList.

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[Mark Jones]

Nice example. :U

[ragdog]

hi

thanks

that was not my problem!
my problem like I these create png fonts png


greets

ragdog

[ramguru]

It's a matter of few seconds to create such fonts.


PNG is an image, so you have to use an image editor. F.e. I use FireWorks (my favorite) it has built-in styles for text, so all you have to do - is to paste an alphabet and apply style you want to it. Of course that final font will be based on some already existing, such as Lucida Console.

[ragdog]

thanks :U

[ragdog]

ok works

greets
ragdog

[ragdog]

hi

can the bitmap font draw with BitBlt?

and how does it work multi line text?

db "test1",13,10
db "test2",13,10
db "test3",0

Code Select Expand


DrawFontTest proc uses esi,hdc:DWORD,hImageListp:DWORD,lpText:DWORD,xpos:DWORD,ypos:DWORD
local paintX,paintY,counter
local tempChar:BYTE
push xpos
pop paintX
push ypos
pop paintY
cld
mov counter,0
mov esi,lpText
lodsb
mov tempChar,al
.while tempChar!=0
mov edi,offset fTable
assume edi:ptr BYTE
mov counter,0
.while TRUE
.break .if [edi]==0
mov al,tempChar
.break .if [edi]==al
inc counter
inc edi
.endw
.if [edi]==0
mov counter,-1
.endif
; invoke ImageList_Draw,hImageListp,counter,hdc,paintX,paintY,ILD_NORMAL
    invoke BitBlt, hdc,20,20,paintX,paintY,hDCBmp,0,0,SRCCOPY   
add paintX,8
lodsb
mov tempChar,al
.endw
ret
DrawFontTest endp

can your help me please

ragdog

[ramguru]

Here is how I would do it...(no ImageList, using BiltBlt & PatBlt)


[attachment deleted by admin]

[ragdog]

this very nice ramguru this is perfect :U

greets ragdog

[u]

I always treat custom bitmap fonts as one whole bitmap, and do BitBlt-like functions.

ImgFont1_CharWid db 15,14,17,10,11,11,14,17,........ ; width of each displayable character from <space> to the last character.
ImgFont1_CharPos dw 0,15,29,46,56,67,78,92,109,....; X-position of each displayable character.

You can make a tool to automatically compute the above arrays, for this you should have one empty pixel-column after each character. You can prepare the bitmap by either using MS Paint (or GIMP) to draw the 32..128 range of characters with a given font, or make a tool to draw that stuff into an offscreen HDC/HBITMAP and save the result (after optionally computing the above arrays).