def _text_(self, text, offs, stroke=False, color=None):
'''
'''
if stroke:
font = GLUT_STROKE_ROMAN
glutStrokeWidth(font, 50)
for c in text:
glutStrokeCharacter(font, ord(c))
else:
glDisable(GL_LIGHTING)
co = color if (color and (isinstance(color, tuple) or isinstance(color, list))) else (0, 1, 0)
glColor3f(*co)
font = GLUT_BITMAP_HELVETICA_18
glRasterPos2f(*offs)
for c in text:
glutBitmapCharacter(font, ord(c))
glEnable(GL_LIGHTING)
def paintGL(self):
if self.opengl_data is None:
glClear(GL.GL_COLOR_BUFFER_BIT)
else:
if self.opengl_resize and self.opengl_keep_aspect:
x_scale = self.width() / float(self.opengl_width)
y_scale = self.height() / float(self.opengl_height)
scale = min(x_scale, y_scale)
if x_scale > y_scale:
glRasterPos2f(-self.opengl_width * scale / self.width(), -1)
else:
glRasterPos2f(-1, -self.opengl_height * scale / self.height())
else:
glRasterPos2f(-1, -1)
glDrawPixels(self.opengl_width, self.opengl_height, self.opengl_format, self.opengl_dtype, self.opengl_data)
def draw(self):
"""
Draw this menu on the screen.
"""
from OpenGL.GL import glRasterPos2f
from OpenGL.GLUT import glutBitmapCharacter, GLUT_BITMAP_HELVETICA_18
view = glGetInteger(GL_VIEWPORT)
# Switch to an orthogonal projection for drawing the menu.
glDisable(GL_LIGHTING)
glDisable(GL_DEPTH_TEST)
glMatrixMode(GL_PROJECTION)
glPushMatrix()
glLoadIdentity()
# Height and width of the viewport.
vheight = view[3] - view[1]
vwidth = view[2] - view[0]
right = 100.0
top = float(vheight) / float(vwidth) * right
glOrtho(0.0, right, 0.0, top, 0.0, 1.0)
glMatrixMode(GL_MODELVIEW)
glPushMatrix()
glLoadIdentity()
gluLookAt(0.0, 0.0, 1.0, 0.0, 0.0, 0.0, 0.0, 1.0, 0.0)
# glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA)
glEnable(GL_BLEND)
glEnable(GL_LINE_SMOOTH)
glEnable(GL_POLYGON_SMOOTH)
#
# Draw the background box
#
nopts = len(self.opts)
# Constants used to size the menu elements.
ratio = right / vwidth
charRise = 22 * ratio
charFall = 8 * ratio
charWidth = 12 * ratio
vmargin = 10 * ratio
hmargin = 20 * ratio
#
itemHeight = charRise + charFall + vmargin
if self.opts:
# Include the length of the title in maxChars so that
# the menu is never narrower than the title.
maxChars = max([len(s) for s in self.opts + (self.title,)])
totalHeight = itemHeight * len(self.opts) + vmargin
else:
maxChars = len(self.title)
totalHeight = itemHeight + vmargin
width = charWidth * maxChars + hmargin * 2.0
titleWidth = charWidth * len(self.title) + hmargin * 2.0
glColor4f(*self.bgColor)
glPushMatrix()
# Translate into the center of the display.
glTranslatef(50.0, top / 2.0, 0.0)
# Now translate this whole figure so that it's centered.
glTranslatef(width / -2.0, totalHeight / -2.0, 0.0)
glBegin(GL_QUADS)
glVertex3f(0.0, 0.0, 0.0)
glVertex3f(width, 0.0, 0.0)
glVertex3f(width, totalHeight, 0.0)
glVertex3f(0.0, totalHeight, 0.0)
glEnd()
glPushMatrix()
glColor4f(*self.fgColor)
glTranslatef(0.0, totalHeight, 0.0)
# Draw the background for the title.
glBegin(GL_QUADS)
glVertex3f(0.0, 0.0, 0.0)
glVertex3f(titleWidth, 0.0, 0.0)
glVertex3f(titleWidth, itemHeight, 0.0)
glVertex3f(0.0, itemHeight, 0.0)
glEnd()
glPopMatrix()
#
# Draw the selection frame for the currently selected item
#
glColor4f(*self.selColor)
# push is 1/2 the linewidth
glPushMatrix()
glTranslatef(0.0, itemHeight * (nopts - self.selection - 1) + vmargin / 2.0, 0.0)
glBegin(GL_QUADS)
glVertex3f(hmargin / 4.0, vmargin / 4.0, 0.0)
glVertex3f(width - hmargin / 4.0, vmargin / 4.0, 0.0)
glVertex3f(width - hmargin / 4.0, itemHeight - vmargin / 4.0, 0.0)
glVertex3f(hmargin / 4.0, itemHeight - vmargin / 4.0, 0.0)
glEnd()
glPopMatrix()
#
# Draw the menu items
#
# Translate into position for the last item.
glTranslatef(hmargin, charFall + vmargin, 0.0)
# Draw items, moving up as we go
for i in range(nopts - 1, -1, -1):
glPushMatrix()
glColor4f(*self.fgColor)
glRasterPos2f(0, 0)
for c in self.opts[i]:
glutBitmapCharacter(GLUT_BITMAP_HELVETICA_18, ord(c))
glPopMatrix()
glTranslatef(0.0, itemHeight, 0.0)
#
# Draw the menu title.
#
glTranslatef(0.0, vmargin / 2.0, 0.0)
glColor4f(*self.bgColor)
glRasterPos2f(0, 0)
for c in self.title:
glutBitmapCharacter(GLUT_BITMAP_HELVETICA_18, ord(c))
glPopMatrix()
#
# end draw
#
glPopMatrix()
glMatrixMode(GL_PROJECTION)
glPopMatrix()
glMatrixMode(GL_MODELVIEW)
glEnable(GL_LIGHTING)
glEnable(GL_DEPTH_TEST)
