Initial revision

Demo/sgi/gl/glstdwin/glstdwdraw.py

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+# Define drawing operations for GL stdwin
+
+import gl
+import fm
+from GL import LO_XOR, LO_SRC
+from glstdwin import MASK
+
+class DrawingObject:
+	#
+	def _init(self, win):
+		self.fg = win._fg
+		self.bg = win._bg
+		self.font = win._font
+		self.size = win._size
+		self.width, self.height = win._area[1]
+		gl.winset(win._gid)
+		gl.color(self.fg)
+		return self
+	#
+	def setfont(self, fontname):
+		self.font = fm.findfont(fontname).scalefont(self.size)
+	#
+	def setsize(self, size):
+		ratio = float(size) / float(self.size)
+		self.size = size
+		self.font = self.font.scalefont(ratio)
+	#
+	def setfgcolor(self, color):
+		self.fg = color
+		gl.color(self.fg)
+	#
+	def setbgcolor(self, color):
+		self.bg = color
+	#
+	def cliprect(self, area):
+		#print 'cliprect', area
+		(left, top), (right, bottom) = area
+		gl.scrmask(left, right, self.height-bottom, self.height-top)
+	#
+	def noclip(self):
+		#print 'noclip()'
+		gl.scrmask(0, self.width, 0, self.height)
+	#
+	def paint(self, ((left, top), (right, bottom))):
+		gl.rectf(left, top, right, bottom)
+	#
+	def box(self, ((left, top), (right, bottom))):
+		#print 'box', ((left, top), (right, bottom))
+		gl.rect(left, top, right, bottom)
+	#
+	def circle(self, ((h, v), radius)):
+		gl.circ(h, v, radius)
+	#
+	def elarc(self, (center, (rh, rv), a1, a2)):
+		pass # XXX
+	#
+	def erase(self, ((left, top), (right, bottom))):
+		#print 'erase', ((left, top), (right, bottom))
+		gl.color(self.bg)
+		gl.rectf(left, top, right, bottom)
+		gl.color(self.fg)
+	#
+	def invert(self, ((left, top), (right, bottom))):
+		#print 'invert', ((h0, v0), (h1, v1))
+		gl.logicop(LO_XOR)
+		gl.color(self.bg)
+		gl.rectf(left, top, right, bottom)
+		gl.color(self.fg)
+		gl.logicop(LO_SRC)
+	#
+	def line(self, ((h0, v0), (h1, v1))):
+		#print 'line', ((h0, v0), (h1, v1))
+		gl.bgnline()
+		gl.v2i(h0, v0)
+		gl.v2i(h1, v1)
+		gl.endline()
+	#
+	def xorline(self, ((h0, v0), (h1, v1))):
+		#print 'xorline', ((h0, v0), (h1, v1))
+		gl.logicop(LO_XOR)
+		gl.color(self.bg)
+		gl.bgnline()
+		gl.v2i(h0, v0)
+		gl.v2i(h1, v1)
+		gl.endline()
+		gl.color(self.fg)
+		gl.logicop(LO_SRC)
+	#
+	def point(self, (h, v)):
+		#print 'point', (h, v)
+		gl.bgnpoint()
+		gl.v2i(h, v)
+		gl.endpoint()
+	#
+	def text(self, ((h, v), string)):
+		#print 'text', ((h, v), string)
+		if h < 0:
+			# If the point is outside the window
+			# the whole string isn't drawn.
+			# Skip the beginning of the string.
+			# XXX What if the font is bigger than 20 pixels?
+			i, n = 0, len(string)
+			while h < -MASK and i < n:
+				h = h + self.font.getstrwidth(string[i])
+				i = i + 1
+			string = string[i:]
+		gl.cmov2(h, v + self.baseline())
+		self.font.setfont()
+		fm.prstr(string)
+	#
+	def shade(self, ((h, v), percent)):
+		pass # XXX
+	#
+	def baseline(self):
+		(printermatched, fixed_width, xorig, yorig, xsize, ysize, \
+			height, nglyphs) = self.font.getfontinfo()
+		return height - yorig
+	#
+	def lineheight(self):
+		(printermatched, fixed_width, xorig, yorig, xsize, ysize, \
+			height, nglyphs) = self.font.getfontinfo()
+		return height
+	#
+	def textbreak(self, (string, width)):
+		# XXX Slooooow!
+		n = len(string)
+		nwidth = self.textwidth(string[:n])
+		while nwidth > width:
+			n = n-1
+			nwidth = self.textwidth(string[:n])
+		return n
+	#
+	def textwidth(self, string):
+		return self.font.getstrwidth(string)
+	#