08-27-2023, 05:31 PM
Here is the final version with @bplus awesome fixes in place:
```
'$DYNAMIC
OPTION _EXPLICIT
OPTION _EXPLICITARRAY
CONST CHARS = 8
CONST COLS = 9
CONST ROWS = 9
CONST BPP2 = 32
' screen setup
DIM CANVAS AS LONG
CANVAS& = _NEWIMAGE(COLS * 150, ROWS * 100, BPP2)
SCREEN CANVAS&
_DEST CANVAS&
' glyph data
DIM GD(CHARS) AS STRING
GD$(0) = GD$(0) + "XXXXXXXXX"
GD$(0) = GD$(0) + ".X......."
GD$(0) = GD$(0) + "..X......"
GD$(0) = GD$(0) + "...X....."
GD$(0) = GD$(0) + "....X...."
GD$(0) = GD$(0) + ".....X..."
GD$(0) = GD$(0) + "......X.."
GD$(0) = GD$(0) + ".......X."
GD$(0) = GD$(0) + "XXXXXXXXX"
GD$(1) = GD$(1) + "XXXXXXXXX"
GD$(1) = GD$(1) + "....X...."
GD$(1) = GD$(1) + "....X...."
GD$(1) = GD$(1) + "....X...."
GD$(1) = GD$(1) + "....X...."
GD$(1) = GD$(1) + "....X...."
GD$(1) = GD$(1) + "....X...."
GD$(1) = GD$(1) + "....X...."
GD$(1) = GD$(1) + "....X...."
GD$(2) = GD$(2) + "....X...."
GD$(2) = GD$(2) + "...X.X..."
GD$(2) = GD$(2) + "..X...X.."
GD$(2) = GD$(2) + ".X.....X."
GD$(2) = GD$(2) + "XXXXXXXXX"
GD$(2) = GD$(2) + "X.......X"
GD$(2) = GD$(2) + "X.......X"
GD$(2) = GD$(2) + "X.......X"
GD$(2) = GD$(2) + "X.......X"
GD$(3) = GD$(3) + "XXXXXXXXX"
GD$(3) = GD$(3) + "X......X."
GD$(3) = GD$(3) + "X.....X.."
GD$(3) = GD$(3) + "X....X..."
GD$(3) = GD$(3) + "X...X...."
GD$(3) = GD$(3) + "X..X....."
GD$(3) = GD$(3) + "X.X......"
GD$(3) = GD$(3) + "XX......."
GD$(3) = GD$(3) + "XXXXXXXXX"
GD$(4) = GD$(4) + "XXXXXXXXX"
GD$(4) = GD$(4) + ".X......."
GD$(4) = GD$(4) + "..X......"
GD$(4) = GD$(4) + "...XXXXXX"
GD$(4) = GD$(4) + "..X......"
GD$(4) = GD$(4) + ".X......."
GD$(4) = GD$(4) + "X........"
GD$(4) = GD$(4) + "X........"
GD$(4) = GD$(4) + "X........"
GD$(5) = GD$(5) + "XXXXXXXXX"
GD$(5) = GD$(5) + "....X...."
GD$(5) = GD$(5) + "....X...."
GD$(5) = GD$(5) + "....X...."
GD$(5) = GD$(5) + "....X...."
GD$(5) = GD$(5) + "....X...."
GD$(5) = GD$(5) + "....X...."
GD$(5) = GD$(5) + "....X...."
GD$(5) = GD$(5) + "XXXXXXXXX"
GD$(6) = GD$(6) + "XXXXXXXXX"
GD$(6) = GD$(6) + "X........"
GD$(6) = GD$(6) + "X........"
GD$(6) = GD$(6) + "X..XXXXXX"
GD$(6) = GD$(6) + "X...X...."
GD$(6) = GD$(6) + "X....X..."
GD$(6) = GD$(6) + "X.....X.."
GD$(6) = GD$(6) + "X......X."
GD$(6) = GD$(6) + "XXXXXXXXX"
GD$(7) = GD$(7) + "X.......X"
GD$(7) = GD$(7) + "X.......X"
GD$(7) = GD$(7) + "X.......X"
GD$(7) = GD$(7) + "X.......X"
GD$(7) = GD$(7) + "XXXXXXXXX"
GD$(7) = GD$(7) + "X.......X"
GD$(7) = GD$(7) + "X.......X"
GD$(7) = GD$(7) + "X.......X"
GD$(7) = GD$(7) + "X.......X"
GD$(8) = GD$(8) + "XXXXXXXXX"
GD$(8) = GD$(8) + ".X......."
GD$(8) = GD$(8) + "..X......"
GD$(8) = GD$(8) + "...X....."
GD$(8) = GD$(8) + "....XXXXX"
GD$(8) = GD$(8) + "...X....."
GD$(8) = GD$(8) + "..X......"
GD$(8) = GD$(8) + ".X......."
GD$(8) = GD$(8) + "XXXXXXXXX"
' F0NT UDT
TYPE F0NT
glyph_width AS INTEGER
glyph_height AS INTEGER
char AS STRING
img AS LONG
END TYPE
DIM STARFIGHTER_FONT(CHARS) AS F0NT
DIM STARFIGHTER_BIG_FONT(CHARS) AS F0NT
' create the glyph images from the glyph data
DIM kolor AS LONG
kolor& = _RGB32(&HFF, &HFF, &HFF)
CALL F0NT.make_glyph("S", STARFIGHTER_FONT(0), GD$(0), kolor&)
CALL F0NT.make_glyph("T", STARFIGHTER_FONT(1), GD$(1), kolor&)
CALL F0NT.make_glyph("A", STARFIGHTER_FONT(2), GD$(2), kolor&)
CALL F0NT.make_glyph("R", STARFIGHTER_FONT(3), GD$(3), kolor&)
CALL F0NT.make_glyph("F", STARFIGHTER_FONT(4), GD$(4), kolor&)
CALL F0NT.make_glyph("I", STARFIGHTER_FONT(5), GD$(5), kolor&)
CALL F0NT.make_glyph("G", STARFIGHTER_FONT(6), GD$(6), kolor&)
CALL F0NT.make_glyph("H", STARFIGHTER_FONT(7), GD$(7), kolor&)
CALL F0NT.make_glyph("E", STARFIGHTER_FONT(8), GD$(8), kolor&)
' prepare for output
_DEST CANVAS&
COLOR 0, _RGB32(&H00, &H00, &HAA)
CLS
' test 1
DIM AS INTEGER x, y, scale, kerning, spacing
COLOR &HFFFFFF00
_PRINTSTRING (50, 20), "Testing spacing 0 to 4 with scale = 1"
FOR spacing% = 0 TO 4
x% = 200 * spacing% + 50: y% = 50: scale% = 1
CALL F0NT.print("STARFIGHTER", STARFIGHTER_FONT(), x%, y%, scale%, spacing%)
Next
' test 2
x% = 50: y% = 100: scale% = 4: kerning% = 0: spacing% = 4
CALL F0NT.print("STARFIGHTER", STARFIGHTER_FONT(), x%, y%, scale%, spacing%)
' test 3
x% = 50: y% = 200: scale% = 7: kerning% = 0: spacing% = 2
CALL F0NT.print("STARFIGHTER", STARFIGHTER_FONT(), x%, y%, scale%, spacing%)
' test 4
x% = 50: y% = 400: scale% = 8: spacing% = 2
CALL F0NT.print("STARFIGHTER", STARFIGHTER_FONT(), x%, y%, scale%, spacing%)
' scale test
CALL F0NT.scale("STARFIGHTER", STARFIGHTER_FONT(), STARFIGHTER_BIG_FONT(), 10)
' save glyphs to disk
CALL F0NT.save_glyphs_to_disk("STARFIGHTER", STARFIGHTER_BIG_FONT())
' cleanup
CALL F0NT.free(STARFIGHTER_FONT())
CALL F0NT.free(STARFIGHTER_BIG_FONT())
''
' Free the font glyph images from memory
'
' @param F0NT ARRAY f()
'
SUB F0NT.free(f() AS F0NT)
DIM AS INTEGER i, lb, ub
lb% = LBOUND(f) : ub% = UBOUND(f)
FOR i% = lb% TO ub%
_FREEIMAGE f(i%).img&
NEXT i%
END SUB
''
' Copies the source font to the dest font
'
' @param F0NT ARRAY sf() source font
' @param F0NT ARRAY df() dest font
'
SUB F0NT.copy(sf() AS F0NT, df() AS F0NT)
DIM AS INTEGER i, lb, ub
lb% = LBOUND(sf) : ub% = UBOUND(sf)
REDIM df(lb% TO ub%) AS F0NT
FOR i% = lb% TO ub%
df(i%).char$ = sf(i%).char$
df(i%).img& = sf(i%).img&
NEXT i%
END SUB
''
' Save glyphs of a font to disk
'
' @param STRING s$ characters to save
' @param F0NT ARRAY f()
' @param STRING dest_dir$
'
SUB F0NT.save_glyphs_to_disk(s$, f() AS F0NT)
DIM AS INTEGER i, lb, ub
lb% = LBOUND(f) : ub% = UBOUND(f)
FOR i% = lb% TO ub%
IF f(i%).char$ = CHR$(ASC(s$, i%+1)) THEN
CALL SaveImage(f(i%).img&, f(i%).char$)
END IF
NEXT i%
END SUB
''
' Make a glyph from glyph data and store it in F0NT
'
' @param STRING c$ glyph character identifier
' @param F0NT ARRAY f()
' @param STRING ARRAY glyph_data$()
' @param LONG kolor& to make glyphs
'
SUB F0NT.make_glyph(c$, f AS F0NT, glyph_data$, kolor&)
DIM AS INTEGER y, x, p, dbg
DIM s AS STRING
DIM old_dest AS LONG
' dbg% = -1
f.char$ = c$
IF dbg% THEN PRINT c$
f.img& = _NEWIMAGE(COLS, ROWS, BPP2)
old_dest& = _DEST : _DEST f.img&
_CLEARCOLOR _RGB32(&H00, &H00, &H00)
FOR y% = 0 TO ROWS
FOR x% = 0 TO COLS
p% = (y% * COLS) + x% + 1
s$ = MID$(glyph_data$, p%, 1)
IF dbg% THEN
_DEST old_dest& : PRINT s$; : _DEST f.img&
END IF
IF s$ <> "." THEN
CALL PSET((x%, y%), kolor&)
END IF
NEXT x%
IF dbg% THEN
_DEST old_dest& : PRINT : _DEST f.img&
END IF
NEXT y%
IF dbg% THEN SLEEP
_DEST old_dest&
END SUB
''
' Get a glyph image from a F0NT by character identifier
'
' @param STRING c$ character identifier of glyph to get
' @param F0NT ARRAY f()
' @return LONG image handle for glyph image of F0NT
'
FUNCTION F0NT.get_glyph&(c$, f() AS F0NT)
DIM AS INTEGER i, lb, ub
lb% = LBOUND(f) : ub% = UBOUND(f)
FOR i% = lb% TO ub%
IF f(i%).char$ = c$ THEN
F0NT.get_glyph& = f(i%).img&
EXIT FUNCTION
END IF
NEXT i%
END FUNCTION
''
' Print something using a F0NT
'
' @param STRING s$ what to print
' @param F0NT ARRAY f()
' @param INTEGER x% position
' @param INTEGER y% position
' @param INTEGER scale% size multiplier
' @param INTEGER spacing% spaces between characters
'
SUB F0NT.print (s$, f() As F0NT, x%, y%, scale%, spacing%)
DIM AS INTEGER i, l, dx1, dy1, dx2, dy2, orig_x
DIM c AS STRING
DIM g AS LONG
l% = LEN(s$)
FOR i% = 1 TO l%
c$ = MID$(s$, i%, 1)
dx1% = x% + (i% - 1) * (COLS + spacing%) * scale%
dy1% = y%
_PUTIMAGE (dx1%, dy1%)-STEP(COLS * scale% - 1, ROWS * scale% - 1), F0NT.get_glyph(c$, f())
NEXT i%
END SUB
''
' Scales a source F0NT glyphs images and stores into dest F0NT
'
' @param STRING s$ Glyphs to scale
' @param F0NT ARRAY sf() source font
' @param F0NT ARRAY df() dest font
' @param INTEGER scale% multiplier
'
SUB F0NT.scale(s$, sf() AS F0NT, df() AS F0NT, scale%)
DIM AS INTEGER i, lb, ub, dx1, dy1, dx2, dy2
DIM AS LONG sg, dg, old_dest
CALL F0NT.copy(sf(), df())
lb% = LBOUND(sf) : ub% = UBOUND(sf)
old_dest& = _DEST
FOR i% = lb% TO ub%
dx1% = 0
dy1% = 0
dx2% = (COLS * scale%) + dx1%
dy2% = (ROWS * scale%) + dy1%
df(i%).img& = _NEWIMAGE(dx2%, dy2%, BPP2)
_SOURCE sf(i%).img& : _DEST df(i%).img&
_PUTIMAGE (dx1%, dy1%)-(dx2%, dy2%)
NEXT i%
_DEST old_dest&
END SUB
''
' Save image to disk as filename by Galleon
'
' @param LONG image& to save to disk
' @param STRING filename$ to save as
'
SUB SaveImage (image&, filename$)
DIM AS LONG f, c, cv, x, y, py, px, lastsource, bpp, bytesperpixel
DIM AS STRING b, d, ext, padder, r
bytesperpixel& = _PIXELSIZE(image&)
IF bytesperpixel& = 0 THEN PRINT "Text modes unsupported!": EXIT SUB
IF bytesperpixel& = 1 THEN bpp& = 8 ELSE bpp& = 24
x& = _WIDTH(image&)
y& = _HEIGHT(image&)
b$="BM????QB64????"+MKL$(40)+MKL$(x&)+MKL$(y&)+MKI$(1)+MKI$(bpp&)+MKL$(0)+"????"+STRING$(16, 0) 'partial BMP header info(???? to be filled later)
IF bytesperpixel& = 1 THEN
FOR c& = 0 TO 255 ' read BGR color settings from JPG image + 1 byte spacer(CHR$(0))
cv& = _PALETTECOLOR(c&, image&) ' color attribute to read.
b$ = b$ +CHR$(_BLUE32(cv&))+CHR$(_GREEN32(cv&))+CHR$(_RED32(cv&))+CHR$(0) 'spacer byte
NEXT
END IF
MID$(b$, 11, 4) = MKL$(LEN(b$)) ' image pixel data offset(BMP header)
lastsource& = _SOURCE
_SOURCE image&
IF ((x& * 3) MOD 4) THEN padder$ = STRING$(4 - ((x& * 3) MOD 4), 0)
FOR py& = y& - 1 TO 0 STEP -1 ' read JPG image pixel color data
r$ = ""
FOR px& = 0 TO x& - 1
c& = POINT(px&, py&) 'POINT 32 bit values are large LONG values
IF bytesperpixel& = 1 THEN r$ = r$ + CHR$(c&) ELSE r$ = r$ + LEFT$(MKL$(c&), 3)
NEXT px&
d$ = d$ + r$ + padder$
NEXT py&
_SOURCE lastsource&
MID$(b$, 35, 4) = MKL$(LEN(d$)) ' image size(BMP header)
b$ = b$ + d$ ' total file data bytes to create file
MID$(b$, 3, 4) = MKL$(LEN(b$)) ' size of data file(BMP header)
IF LCASE$(RIGHT$(filename$, 4)) <> ".bmp" THEN ext$ = ".bmp"
f& = FREEFILE
OPEN filename$ + ext$ FOR OUTPUT AS #f&: CLOSE #f& ' erases an existing file
OPEN filename$ + ext$ FOR BINARY AS #f&
PUT #f&,,b$
CLOSE #f&
END SUB
```
Some things added / changed that @bplus might not know about because they were added or changed after his help:
I made the `GD$(n)` align at the first line by using the same pattern `GD$(n) = GD$(n) + "` which I used in lower lines. I noticed that the automatic formatting in QB64PE made those glyph strings look really bad. I'm not sure if this is a bad practice to concatenate an uninitialized `STRING` on itself or not, but it seems to work OK. Is it true that when `STRING`s are declared, before they are assigned they are `=""` ?
I added a `F0NT.scale` routine which makes exporting font glyphs using BMP format with Galleon `SaveImage`a lot easier to see for troubleshooting, etc. The idea of the scale routine separate was to make it easy to resize font glyphs as a new font.
To this end the following other routines were added: `F0NT.copy`, `F0NT.save_glyphs_to_disk`, and `SaveImage`
This is helpful too, and example of use is below.
```
DIM STARFIGHTER_BIG_FONT(CHARS) AS F0NT
' scale test
CALL F0NT.scale("STARFIGHTER", STARFIGHTER_FONT(), STARFIGHTER_BIG_FONT(), 10)
' save glyphs to disk
CALL F0NT.save_glyphs_to_disk("STARFIGHTER", STARFIGHTER_BIG_FONT())
' cleanup
CALL F0NT.free(STARFIGHTER_FONT())
CALL F0NT.free(STARFIGHTER_BIG_FONT())
```
Admittedly the idea to destructively scale or clone and resize a font came out of frustration trying to figure out the spacing and x offsets that @bplus helped with, but the routine is still helpful and I'll keep it in the final library version.
Thanks again @bplus and @mnrvovrfc!
```
'$DYNAMIC
OPTION _EXPLICIT
OPTION _EXPLICITARRAY
CONST CHARS = 8
CONST COLS = 9
CONST ROWS = 9
CONST BPP2 = 32
' screen setup
DIM CANVAS AS LONG
CANVAS& = _NEWIMAGE(COLS * 150, ROWS * 100, BPP2)
SCREEN CANVAS&
_DEST CANVAS&
' glyph data
DIM GD(CHARS) AS STRING
GD$(0) = GD$(0) + "XXXXXXXXX"
GD$(0) = GD$(0) + ".X......."
GD$(0) = GD$(0) + "..X......"
GD$(0) = GD$(0) + "...X....."
GD$(0) = GD$(0) + "....X...."
GD$(0) = GD$(0) + ".....X..."
GD$(0) = GD$(0) + "......X.."
GD$(0) = GD$(0) + ".......X."
GD$(0) = GD$(0) + "XXXXXXXXX"
GD$(1) = GD$(1) + "XXXXXXXXX"
GD$(1) = GD$(1) + "....X...."
GD$(1) = GD$(1) + "....X...."
GD$(1) = GD$(1) + "....X...."
GD$(1) = GD$(1) + "....X...."
GD$(1) = GD$(1) + "....X...."
GD$(1) = GD$(1) + "....X...."
GD$(1) = GD$(1) + "....X...."
GD$(1) = GD$(1) + "....X...."
GD$(2) = GD$(2) + "....X...."
GD$(2) = GD$(2) + "...X.X..."
GD$(2) = GD$(2) + "..X...X.."
GD$(2) = GD$(2) + ".X.....X."
GD$(2) = GD$(2) + "XXXXXXXXX"
GD$(2) = GD$(2) + "X.......X"
GD$(2) = GD$(2) + "X.......X"
GD$(2) = GD$(2) + "X.......X"
GD$(2) = GD$(2) + "X.......X"
GD$(3) = GD$(3) + "XXXXXXXXX"
GD$(3) = GD$(3) + "X......X."
GD$(3) = GD$(3) + "X.....X.."
GD$(3) = GD$(3) + "X....X..."
GD$(3) = GD$(3) + "X...X...."
GD$(3) = GD$(3) + "X..X....."
GD$(3) = GD$(3) + "X.X......"
GD$(3) = GD$(3) + "XX......."
GD$(3) = GD$(3) + "XXXXXXXXX"
GD$(4) = GD$(4) + "XXXXXXXXX"
GD$(4) = GD$(4) + ".X......."
GD$(4) = GD$(4) + "..X......"
GD$(4) = GD$(4) + "...XXXXXX"
GD$(4) = GD$(4) + "..X......"
GD$(4) = GD$(4) + ".X......."
GD$(4) = GD$(4) + "X........"
GD$(4) = GD$(4) + "X........"
GD$(4) = GD$(4) + "X........"
GD$(5) = GD$(5) + "XXXXXXXXX"
GD$(5) = GD$(5) + "....X...."
GD$(5) = GD$(5) + "....X...."
GD$(5) = GD$(5) + "....X...."
GD$(5) = GD$(5) + "....X...."
GD$(5) = GD$(5) + "....X...."
GD$(5) = GD$(5) + "....X...."
GD$(5) = GD$(5) + "....X...."
GD$(5) = GD$(5) + "XXXXXXXXX"
GD$(6) = GD$(6) + "XXXXXXXXX"
GD$(6) = GD$(6) + "X........"
GD$(6) = GD$(6) + "X........"
GD$(6) = GD$(6) + "X..XXXXXX"
GD$(6) = GD$(6) + "X...X...."
GD$(6) = GD$(6) + "X....X..."
GD$(6) = GD$(6) + "X.....X.."
GD$(6) = GD$(6) + "X......X."
GD$(6) = GD$(6) + "XXXXXXXXX"
GD$(7) = GD$(7) + "X.......X"
GD$(7) = GD$(7) + "X.......X"
GD$(7) = GD$(7) + "X.......X"
GD$(7) = GD$(7) + "X.......X"
GD$(7) = GD$(7) + "XXXXXXXXX"
GD$(7) = GD$(7) + "X.......X"
GD$(7) = GD$(7) + "X.......X"
GD$(7) = GD$(7) + "X.......X"
GD$(7) = GD$(7) + "X.......X"
GD$(8) = GD$(8) + "XXXXXXXXX"
GD$(8) = GD$(8) + ".X......."
GD$(8) = GD$(8) + "..X......"
GD$(8) = GD$(8) + "...X....."
GD$(8) = GD$(8) + "....XXXXX"
GD$(8) = GD$(8) + "...X....."
GD$(8) = GD$(8) + "..X......"
GD$(8) = GD$(8) + ".X......."
GD$(8) = GD$(8) + "XXXXXXXXX"
' F0NT UDT
TYPE F0NT
glyph_width AS INTEGER
glyph_height AS INTEGER
char AS STRING
img AS LONG
END TYPE
DIM STARFIGHTER_FONT(CHARS) AS F0NT
DIM STARFIGHTER_BIG_FONT(CHARS) AS F0NT
' create the glyph images from the glyph data
DIM kolor AS LONG
kolor& = _RGB32(&HFF, &HFF, &HFF)
CALL F0NT.make_glyph("S", STARFIGHTER_FONT(0), GD$(0), kolor&)
CALL F0NT.make_glyph("T", STARFIGHTER_FONT(1), GD$(1), kolor&)
CALL F0NT.make_glyph("A", STARFIGHTER_FONT(2), GD$(2), kolor&)
CALL F0NT.make_glyph("R", STARFIGHTER_FONT(3), GD$(3), kolor&)
CALL F0NT.make_glyph("F", STARFIGHTER_FONT(4), GD$(4), kolor&)
CALL F0NT.make_glyph("I", STARFIGHTER_FONT(5), GD$(5), kolor&)
CALL F0NT.make_glyph("G", STARFIGHTER_FONT(6), GD$(6), kolor&)
CALL F0NT.make_glyph("H", STARFIGHTER_FONT(7), GD$(7), kolor&)
CALL F0NT.make_glyph("E", STARFIGHTER_FONT(8), GD$(8), kolor&)
' prepare for output
_DEST CANVAS&
COLOR 0, _RGB32(&H00, &H00, &HAA)
CLS
' test 1
DIM AS INTEGER x, y, scale, kerning, spacing
COLOR &HFFFFFF00
_PRINTSTRING (50, 20), "Testing spacing 0 to 4 with scale = 1"
FOR spacing% = 0 TO 4
x% = 200 * spacing% + 50: y% = 50: scale% = 1
CALL F0NT.print("STARFIGHTER", STARFIGHTER_FONT(), x%, y%, scale%, spacing%)
Next
' test 2
x% = 50: y% = 100: scale% = 4: kerning% = 0: spacing% = 4
CALL F0NT.print("STARFIGHTER", STARFIGHTER_FONT(), x%, y%, scale%, spacing%)
' test 3
x% = 50: y% = 200: scale% = 7: kerning% = 0: spacing% = 2
CALL F0NT.print("STARFIGHTER", STARFIGHTER_FONT(), x%, y%, scale%, spacing%)
' test 4
x% = 50: y% = 400: scale% = 8: spacing% = 2
CALL F0NT.print("STARFIGHTER", STARFIGHTER_FONT(), x%, y%, scale%, spacing%)
' scale test
CALL F0NT.scale("STARFIGHTER", STARFIGHTER_FONT(), STARFIGHTER_BIG_FONT(), 10)
' save glyphs to disk
CALL F0NT.save_glyphs_to_disk("STARFIGHTER", STARFIGHTER_BIG_FONT())
' cleanup
CALL F0NT.free(STARFIGHTER_FONT())
CALL F0NT.free(STARFIGHTER_BIG_FONT())
''
' Free the font glyph images from memory
'
' @param F0NT ARRAY f()
'
SUB F0NT.free(f() AS F0NT)
DIM AS INTEGER i, lb, ub
lb% = LBOUND(f) : ub% = UBOUND(f)
FOR i% = lb% TO ub%
_FREEIMAGE f(i%).img&
NEXT i%
END SUB
''
' Copies the source font to the dest font
'
' @param F0NT ARRAY sf() source font
' @param F0NT ARRAY df() dest font
'
SUB F0NT.copy(sf() AS F0NT, df() AS F0NT)
DIM AS INTEGER i, lb, ub
lb% = LBOUND(sf) : ub% = UBOUND(sf)
REDIM df(lb% TO ub%) AS F0NT
FOR i% = lb% TO ub%
df(i%).char$ = sf(i%).char$
df(i%).img& = sf(i%).img&
NEXT i%
END SUB
''
' Save glyphs of a font to disk
'
' @param STRING s$ characters to save
' @param F0NT ARRAY f()
' @param STRING dest_dir$
'
SUB F0NT.save_glyphs_to_disk(s$, f() AS F0NT)
DIM AS INTEGER i, lb, ub
lb% = LBOUND(f) : ub% = UBOUND(f)
FOR i% = lb% TO ub%
IF f(i%).char$ = CHR$(ASC(s$, i%+1)) THEN
CALL SaveImage(f(i%).img&, f(i%).char$)
END IF
NEXT i%
END SUB
''
' Make a glyph from glyph data and store it in F0NT
'
' @param STRING c$ glyph character identifier
' @param F0NT ARRAY f()
' @param STRING ARRAY glyph_data$()
' @param LONG kolor& to make glyphs
'
SUB F0NT.make_glyph(c$, f AS F0NT, glyph_data$, kolor&)
DIM AS INTEGER y, x, p, dbg
DIM s AS STRING
DIM old_dest AS LONG
' dbg% = -1
f.char$ = c$
IF dbg% THEN PRINT c$
f.img& = _NEWIMAGE(COLS, ROWS, BPP2)
old_dest& = _DEST : _DEST f.img&
_CLEARCOLOR _RGB32(&H00, &H00, &H00)
FOR y% = 0 TO ROWS
FOR x% = 0 TO COLS
p% = (y% * COLS) + x% + 1
s$ = MID$(glyph_data$, p%, 1)
IF dbg% THEN
_DEST old_dest& : PRINT s$; : _DEST f.img&
END IF
IF s$ <> "." THEN
CALL PSET((x%, y%), kolor&)
END IF
NEXT x%
IF dbg% THEN
_DEST old_dest& : PRINT : _DEST f.img&
END IF
NEXT y%
IF dbg% THEN SLEEP
_DEST old_dest&
END SUB
''
' Get a glyph image from a F0NT by character identifier
'
' @param STRING c$ character identifier of glyph to get
' @param F0NT ARRAY f()
' @return LONG image handle for glyph image of F0NT
'
FUNCTION F0NT.get_glyph&(c$, f() AS F0NT)
DIM AS INTEGER i, lb, ub
lb% = LBOUND(f) : ub% = UBOUND(f)
FOR i% = lb% TO ub%
IF f(i%).char$ = c$ THEN
F0NT.get_glyph& = f(i%).img&
EXIT FUNCTION
END IF
NEXT i%
END FUNCTION
''
' Print something using a F0NT
'
' @param STRING s$ what to print
' @param F0NT ARRAY f()
' @param INTEGER x% position
' @param INTEGER y% position
' @param INTEGER scale% size multiplier
' @param INTEGER spacing% spaces between characters
'
SUB F0NT.print (s$, f() As F0NT, x%, y%, scale%, spacing%)
DIM AS INTEGER i, l, dx1, dy1, dx2, dy2, orig_x
DIM c AS STRING
DIM g AS LONG
l% = LEN(s$)
FOR i% = 1 TO l%
c$ = MID$(s$, i%, 1)
dx1% = x% + (i% - 1) * (COLS + spacing%) * scale%
dy1% = y%
_PUTIMAGE (dx1%, dy1%)-STEP(COLS * scale% - 1, ROWS * scale% - 1), F0NT.get_glyph(c$, f())
NEXT i%
END SUB
''
' Scales a source F0NT glyphs images and stores into dest F0NT
'
' @param STRING s$ Glyphs to scale
' @param F0NT ARRAY sf() source font
' @param F0NT ARRAY df() dest font
' @param INTEGER scale% multiplier
'
SUB F0NT.scale(s$, sf() AS F0NT, df() AS F0NT, scale%)
DIM AS INTEGER i, lb, ub, dx1, dy1, dx2, dy2
DIM AS LONG sg, dg, old_dest
CALL F0NT.copy(sf(), df())
lb% = LBOUND(sf) : ub% = UBOUND(sf)
old_dest& = _DEST
FOR i% = lb% TO ub%
dx1% = 0
dy1% = 0
dx2% = (COLS * scale%) + dx1%
dy2% = (ROWS * scale%) + dy1%
df(i%).img& = _NEWIMAGE(dx2%, dy2%, BPP2)
_SOURCE sf(i%).img& : _DEST df(i%).img&
_PUTIMAGE (dx1%, dy1%)-(dx2%, dy2%)
NEXT i%
_DEST old_dest&
END SUB
''
' Save image to disk as filename by Galleon
'
' @param LONG image& to save to disk
' @param STRING filename$ to save as
'
SUB SaveImage (image&, filename$)
DIM AS LONG f, c, cv, x, y, py, px, lastsource, bpp, bytesperpixel
DIM AS STRING b, d, ext, padder, r
bytesperpixel& = _PIXELSIZE(image&)
IF bytesperpixel& = 0 THEN PRINT "Text modes unsupported!": EXIT SUB
IF bytesperpixel& = 1 THEN bpp& = 8 ELSE bpp& = 24
x& = _WIDTH(image&)
y& = _HEIGHT(image&)
b$="BM????QB64????"+MKL$(40)+MKL$(x&)+MKL$(y&)+MKI$(1)+MKI$(bpp&)+MKL$(0)+"????"+STRING$(16, 0) 'partial BMP header info(???? to be filled later)
IF bytesperpixel& = 1 THEN
FOR c& = 0 TO 255 ' read BGR color settings from JPG image + 1 byte spacer(CHR$(0))
cv& = _PALETTECOLOR(c&, image&) ' color attribute to read.
b$ = b$ +CHR$(_BLUE32(cv&))+CHR$(_GREEN32(cv&))+CHR$(_RED32(cv&))+CHR$(0) 'spacer byte
NEXT
END IF
MID$(b$, 11, 4) = MKL$(LEN(b$)) ' image pixel data offset(BMP header)
lastsource& = _SOURCE
_SOURCE image&
IF ((x& * 3) MOD 4) THEN padder$ = STRING$(4 - ((x& * 3) MOD 4), 0)
FOR py& = y& - 1 TO 0 STEP -1 ' read JPG image pixel color data
r$ = ""
FOR px& = 0 TO x& - 1
c& = POINT(px&, py&) 'POINT 32 bit values are large LONG values
IF bytesperpixel& = 1 THEN r$ = r$ + CHR$(c&) ELSE r$ = r$ + LEFT$(MKL$(c&), 3)
NEXT px&
d$ = d$ + r$ + padder$
NEXT py&
_SOURCE lastsource&
MID$(b$, 35, 4) = MKL$(LEN(d$)) ' image size(BMP header)
b$ = b$ + d$ ' total file data bytes to create file
MID$(b$, 3, 4) = MKL$(LEN(b$)) ' size of data file(BMP header)
IF LCASE$(RIGHT$(filename$, 4)) <> ".bmp" THEN ext$ = ".bmp"
f& = FREEFILE
OPEN filename$ + ext$ FOR OUTPUT AS #f&: CLOSE #f& ' erases an existing file
OPEN filename$ + ext$ FOR BINARY AS #f&
PUT #f&,,b$
CLOSE #f&
END SUB
```
Some things added / changed that @bplus might not know about because they were added or changed after his help:
I made the `GD$(n)` align at the first line by using the same pattern `GD$(n) = GD$(n) + "` which I used in lower lines. I noticed that the automatic formatting in QB64PE made those glyph strings look really bad. I'm not sure if this is a bad practice to concatenate an uninitialized `STRING` on itself or not, but it seems to work OK. Is it true that when `STRING`s are declared, before they are assigned they are `=""` ?
I added a `F0NT.scale` routine which makes exporting font glyphs using BMP format with Galleon `SaveImage`a lot easier to see for troubleshooting, etc. The idea of the scale routine separate was to make it easy to resize font glyphs as a new font.
To this end the following other routines were added: `F0NT.copy`, `F0NT.save_glyphs_to_disk`, and `SaveImage`
This is helpful too, and example of use is below.
```
DIM STARFIGHTER_BIG_FONT(CHARS) AS F0NT
' scale test
CALL F0NT.scale("STARFIGHTER", STARFIGHTER_FONT(), STARFIGHTER_BIG_FONT(), 10)
' save glyphs to disk
CALL F0NT.save_glyphs_to_disk("STARFIGHTER", STARFIGHTER_BIG_FONT())
' cleanup
CALL F0NT.free(STARFIGHTER_FONT())
CALL F0NT.free(STARFIGHTER_BIG_FONT())
```
Admittedly the idea to destructively scale or clone and resize a font came out of frustration trying to figure out the spacing and x offsets that @bplus helped with, but the routine is still helpful and I'll keep it in the final library version.
Thanks again @bplus and @mnrvovrfc!