It took some effort, but I found how to scale button-size with font-size and text-length.
It is a contribution to the topic "Aligning Text In A Button" at viewtopic.php?f=26&p=6681#p6681
'Align buttontext, by Dutchman, july 2015
'----- set display
FontSize=20
Font=12
DATA "Courier","Courier-Bold","Courier-BoldOblique" '1-3
DATA "Courier-Oblique","CourierNewPS-BoldItalicMT" '4-5
DATA "CourierNewPS-BoldMT","CourierNewPS-ItalicMT" '6-7
DATA "CourierNewPSMT","Menlo-Bold","Menlo-BoldItalic"'8-10
DATA "Menlo-Italic","Menlo-Regular" '11-12
GOSUB Initialise
'
'----- Presets
Random$.min=5 'letters
Random$.max=12 'letters
Aligned$.Space$=" " 'minimum space
'
'----- Set scaled size
length=2*Random$.max+LEN(Aligned$.Space$)
bw=(length+1)*0.6*FontSize 'button-width
bh=2*fontsize 'buttonheight
'
'----- MAIN
PRINT "Font is: """;FontName$;""""
dy=1.2*bh
FOR n=1 TO 5
BUTTON n TEXT Aligned$(Random$,Random$,length) AT 10,n*dy SIZE bw,bh
NEXT n
FILL COLOR 1,0,0
BUTTON n TEXT "QUIT" AT 10,n*dy SIZE bw,bh
DO ! UNTIL BUTTON_PRESSED(STR$(n,"#"))
END
'
'===== Functions and Subroutines
DEF Aligned$(w1$,w2$,n)
'NOTE: LEN(w1$&w2$&Space$) <= n
nn=LEN(w1$&w2$&Space$)
x$="" ! WHILE LEN(x$)<n-nn ! x$&=" " ! END WHILE
Txt$=w1$&Space$&x$&w2$
RETURN txt$
END DEF
'
DEF Random$
txt$=""
FOR i=1 TO min+RND(max-min+1)
txt$&=CHR$(97+RND(123-97))
NEXT i
RETURN txt$
END DEF
'
Initialise:
OPTION BASE 1
DIM Font$(12)
FOR i=1 TO 12 ! READ Font$(i)
NEXT i
FontName$=Font$((ABS(Font)-1)%12+1)
SET OUTPUT FONT NAME FontName$
SET OUTPUT FONT SIZE FontSize
SET BUTTONS CUSTOM
SET BUTTONS FONT NAME FontName$
SET BUTTONS FONT SIZE FontSize
DRAW COLOR 1,1,0
FILL COLOR 0,0,1
RETURN
buttons.PNG (58.38 KiB) Viewed 1657 times
Last edited by Dutchman on Thu Jan 19, 2023 3:40 pm, edited 2 times in total.
Nice job. This works very well with the two iOS monospaced font families, Courier and Menlo. It doesn't work with any of the other iOS fonts I tried, which are all variably-spaced. It might be possible to modify the code to work with those, but you would have to first determine the width of each letter of the alphabet and the space for that particular font and size.
This is a code snippet that creates a width lookup table for any font and size. Possibly it could be adapted so that your alignment would work on all fonts.
'determine the width of each character in pixels
GRAPHICS
DRAW FONT NAME "Arial" 'font name here
DRAW FONT SIZE 20 'font size here
DIM C(53,2)
C(0,0)=32
C(0,1)=TEXT_WIDTH(" ") 'store width of a space
FOR n = 1 TO 26
C(n,0)=n+64
C(n,1)=TEXT_WIDTH(CHR$(n+64)) 'store widths of uppercase characters
C(n+26,0)=n+96
C(n+26,1)=TEXT_WIDTH(CHR$(n+96)) 'store widths of lowercase characters
NEXT n
END
