A tft addin for pbp3

[richard]

the fonts are really 8x8 fronts but the alpha/numeric char only use 7x8 with the last bit always o (for chr spacing)
there are two fonts in this thread the first is chr 32-90 and the second chr 32-127. I have a extended font (attached) that has
a radio button arrows ,play,stop,pause,speaker on/off symbols ,these use the full 8x8

this is the routine to display font chars

g
cga:
    g_fontoffset = (g_chr-font_begin)*8   +  fontaddr 
    
    if   (x+textsize*7) > width  then return
    if   (y+textsize*8) > height  then return
    if      (g_chr <font_begin) ||  (g_chr >font_end )   then return
    for ROW=0 to 7    ;font height   this would need to be a var set to font height size
        readcode g_fontoffset +ROW,ctemp  ;this would need to be able to "unpack" different font with bits
        for PIXEL=0 to 7   ;font width ; font width var req here too
            X1= X+PIXEL
            X0=X1
            Y0=Y+7-ROW
            Y1=Y0
            IF   TEXTSIZE  ==1 THEN
                GOSUB SETWINDOW
                if ctemp.0[PIXEL]  then
                      ;SETPIXEL X+PIXEL,Y+7-ROW ,FG
                      TFT_CMD_IN= FG>>8
                      GOSUB TFT_DATA
                      TFT_CMD_IN= FG
                      GOSUB TFT_DATA
                ELSE
                      ;SETPIXEL X+PIXEL,Y+7-ROW ,BG
                      TFT_CMD_IN= BG>>8
                      GOSUB TFT_DATA
                      TFT_CMD_IN= BG
                      GOSUB TFT_DATA
                ENDIF
           ELSE
                X0=X+PIXEL*TEXTSIZE 
                Y0=Y+( 7-ROW )*TEXTSIZE 
                X1= TEXTSIZE 
                Y1= TEXTSIZE
                if ctemp.0[PIXEL]  then
                     FrG=fg
                     GOSUB frectc
                ELSE
                     FrG=BG
                     GOSUB frectc
                ENDIF
            ENDIF
        NEXT
    next
    x=x+textsize*7       ;auto increment x for str function ;  and font width here too
RETURN

the arduino utft code can handle variable width fonts by storing a second table along with the font . that table records the h/w of every chr in the font and ascii val of the first and last chr in the font too.
its pretty straight forward but not trivial task to change the pgm to do that ; however all the text box code for buttons etc would need to be altered too