Demo/sgi/gl/glstdwin/glstdwdraw.py

   1 # Define drawing operations for GL stdwin
   2
   3 import gl
   4 import fm
   5 from GL import LO_XOR, LO_SRC
   6 from glstdwin import MASK
   7
   8 class DrawingObject:
   9         #
  10         def _init(self, win):
  11                 self.fg = win._fg
  12                 self.bg = win._bg
  13                 self.font = win._font
  14                 self.size = win._size
  15                 self.width, self.height = win._area[1]
  16                 gl.winset(win._gid)
  17                 gl.color(self.fg)
  18                 return self
  19         #
  20         def setfont(self, fontname):
  21                 self.font = fm.findfont(fontname).scalefont(self.size)
  22         #
  23         def setsize(self, size):
  24                 ratio = float(size) / float(self.size)
  25                 self.size = size
  26                 self.font = self.font.scalefont(ratio)
  27         #
  28         def setfgcolor(self, color):
  29                 self.fg = color
  30                 gl.color(self.fg)
  31         #
  32         def setbgcolor(self, color):
  33                 self.bg = color
  34         #
  35         def cliprect(self, area):
  36                 #print 'cliprect', area
  37                 (left, top), (right, bottom) = area
  38                 gl.scrmask(left, right, self.height-bottom, self.height-top)
  39         #
  40         def noclip(self):
  41                 #print 'noclip()'
  42                 gl.scrmask(0, self.width, 0, self.height)
  43         #
  44         def paint(self, ((left, top), (right, bottom))):
  45                 gl.rectf(left, top, right, bottom)
  46         #
  47         def box(self, ((left, top), (right, bottom))):
  48                 #print 'box', ((left, top), (right, bottom))
  49                 gl.rect(left, top, right, bottom)
  50         #
  51         def circle(self, (h, v), radius):
  52                 gl.circ(h, v, radius)
  53         #
  54         def elarc(self, center, (rh, rv), (a1, a2)):
  55                 pass # XXX
  56         #
  57         def erase(self, ((left, top), (right, bottom))):
  58                 #print 'erase', ((left, top), (right, bottom))
  59                 gl.color(self.bg)
  60                 gl.rectf(left, top, right, bottom)
  61                 gl.color(self.fg)
  62         #
  63         def invert(self, ((left, top), (right, bottom))):
  64                 #print 'invert', ((h0, v0), (h1, v1))
  65                 gl.logicop(LO_XOR)
  66                 gl.color(self.bg)
  67                 gl.rectf(left, top, right, bottom)
  68                 gl.color(self.fg)
  69                 gl.logicop(LO_SRC)
  70         #
  71         def line(self, (h0, v0), (h1, v1)):
  72                 #print 'line', ((h0, v0), (h1, v1))
  73                 gl.bgnline()
  74                 gl.v2i(h0, v0)
  75                 gl.v2i(h1, v1)
  76                 gl.endline()
  77         #
  78         def xorline(self, (h0, v0), (h1, v1)):
  79                 #print 'xorline', ((h0, v0), (h1, v1))
  80                 gl.logicop(LO_XOR)
  81                 gl.color(self.bg)
  82                 gl.bgnline()
  83                 gl.v2i(h0, v0)
  84                 gl.v2i(h1, v1)
  85                 gl.endline()
  86                 gl.color(self.fg)
  87                 gl.logicop(LO_SRC)
  88         #
  89         def point(self, (h, v)):
  90                 #print 'point', (h, v)
  91                 gl.bgnpoint()
  92                 gl.v2i(h, v)
  93                 gl.endpoint()
  94         #
  95         def text(self, (h, v), string):
  96                 #print 'text', ((h, v), string)
  97                 if h < 0:
  98                         # If the point is outside the window
  99                         # the whole string isn't drawn.
 100                         # Skip the beginning of the string.
 101                         # XXX What if the font is bigger than 20 pixels?
 102                         i, n = 0, len(string)
 103                         while h < -MASK and i < n:
 104                                 h = h + self.font.getstrwidth(string[i])
 105                                 i = i + 1
 106                         string = string[i:]
 107                 gl.cmov2(h, v + self.baseline())
 108                 self.font.setfont()
 109                 fm.prstr(string)
 110         #
 111         def shade(self, (h, v), percent):
 112                 pass # XXX
 113         #
 114         def baseline(self):
 115                 (printermatched, fixed_width, xorig, yorig, xsize, ysize, \
 116                         height, nglyphs) = self.font.getfontinfo()
 117                 return height - yorig
 118         #
 119         def lineheight(self):
 120                 (printermatched, fixed_width, xorig, yorig, xsize, ysize, \
 121                         height, nglyphs) = self.font.getfontinfo()
 122                 return height
 123         #
 124         def textbreak(self, string, width):
 125                 # XXX Slooooow!
 126                 n = len(string)
 127                 nwidth = self.textwidth(string[:n])
 128                 while nwidth > width:
 129                         n = n-1
 130                         nwidth = self.textwidth(string[:n])
 131                 return n
 132         #
 133         def textwidth(self, string):
 134                 return self.font.getstrwidth(string)
 135         #