src/pgu/text.py

   1 """a collection of text rendering functions
   2 """
   3 def write(s,font,pos,color,text,border=1):
   4     """write text to a surface with a black border
   5
   6     <pre>write(s,font,pos,color,text,border=1)</pre>
   7     """
   8     i = font.render(text,1,(0,0,0))
   9     si = border
  10     dirs = [(-1,-1),(-1,0),(-1,1),(0,-1),(0,1),(1,-1),(1,0),(1,1)]
  11     for dx,dy in dirs: s.blit(i,(pos[0]+dx*si,pos[1]+dy*si))
  12     i = font.render(text,1,color)
  13     s.blit(i,pos)
  14
  15 def writec(s,font,color,text,border=1):
  16     """write centered text to a surface with a black border
  17
  18     <pre>writec(s,font,color,text,border=1)</pre>
  19     """
  20     w,h = font.size(text)
  21     x = (s.get_width()-w)/2
  22     y = (s.get_height()-h)/2
  23     write(s,font,(x,y),color,text,border)
  24
  25 def writepre(s,font,rect,color,text):
  26     """write preformatted text
  27
  28     <pre>writepre(s,font,rect,color,text)</pre>
  29     """
  30     r,c,txt = rect,color,text
  31     txt = txt.replace("\t","        ")
  32     i = font.render(" ",1,c)
  33     sw,sh = i.get_width(),i.get_height()
  34     y = r.top
  35     for sentence in txt.split("\n"):
  36         x = r.left
  37         i = font.render(sentence,1,c)
  38         s.blit(i,(x,y))
  39         y += sh
  40
  41 def writewrap(s,font,rect,color,text):
  42     """write wrapped text
  43
  44     <pre>writewrap(s,font,rect,color,text)</pre>
  45     """
  46     r,c,txt = rect,color,text
  47     txt = txt.replace("\t","        ")
  48     i = font.render(" ",1,c)
  49     sw,sh = i.get_width(),i.get_height()
  50     y = r.top
  51     for sentence in txt.split("\n"):
  52         x = r.left
  53         for word in sentence.split(" "):
  54             i = font.render(word,1,c)
  55             iw,ih = i.get_width(),i.get_height()
  56             if x+iw > r.right: x,y = r.left,y+sh
  57             s.blit(i,(x,y))
  58             x += iw+sw
  59         y += sh
  60
  61 # vim: set filetype=python sts=4 sw=4 noet si :