def _render_linearring(self, f, data, pxlsz, ss):
c = self._slatectx
c.set_operator(cr.OPERATOR_OVER)
ss.style_stroke(c, data, pxlsz)
c.move_to(*self.imgcoords(*f.coords[0]))
for x, y in f.coords[1:]:
c.line_to(self.imgcoords(x,y))
c.close_path()
c.stroke()
label = ss.get_label(data)
if label and len(label) > 0 and ss.style_label(c, data, pxlsz):
xoff, yoff = ss.get_labeloffsets(data, pxlsz)
c.save()
c.move_to(0,0)
anchor = self.imgcoords(f.interpolate(xoff, normalized=True))
xbear, ybear, width, height, _0, _1 = cr.text_extents(label)
width = width * pxlsz[0]
adv = self.imgcoords(*f.interpolate(f.length*xoff + width))
angle = math.arctan((adv[1] - anchor[1]) / (adv[0] - anchor[0]))
c.translate(-yoff*height)
c.rotate(angle)
c.translate(*anchor)
if ss.style_labelhalo(c, data, pxlsz):
c.text_path(label)
c.stroke()
c.text_path(label)
if ss.style_labelfill(c, data, pxlsz):
c.fill_preserve()
if ss.style_labelstroke(c, data, pxlsz):
c.stroke()
c.restore()
def _render_linearring(self, f, data, pxlsz, ss):
c = self._slatectx
c.set_operator(cr.OPERATOR_OVER)
ss.style_stroke(c, data, pxlsz)
c.move_to(*self.imgcoords(*f.coords[0]))
for x, y in f.coords[1:]:
c.line_to(self.imgcoords(x, y))
c.close_path()
c.stroke()
label = ss.get_label(data)
if label and len(label) > 0 and ss.style_label(c, data, pxlsz):
xoff, yoff = ss.get_labeloffsets(data, pxlsz)
c.save()
c.move_to(0, 0)
anchor = self.imgcoords(f.interpolate(xoff, normalized=True))
xbear, ybear, width, height, _0, _1 = cr.text_extents(label)
width = width * pxlsz[0]
adv = self.imgcoords(*f.interpolate(f.length * xoff + width))
angle = math.arctan((adv[1] - anchor[1]) / (adv[0] - anchor[0]))
c.translate(-yoff * height)
c.rotate(angle)
c.translate(*anchor)
if ss.style_labelhalo(c, data, pxlsz):
c.text_path(label)
c.stroke()
c.text_path(label)
if ss.style_labelfill(c, data, pxlsz):
c.fill_preserve()
if ss.style_labelstroke(c, data, pxlsz):
c.stroke()
c.restore()
def _render_polygon(self, f, data, pxlsz, ss):
c = self._slatectx
c.set_operator(cr.OPERATOR_OVER)
c.move_to(*self.imgcoords(*f.coords[0]))
for x, y in f.exterior.coords[1:]:
c.line_to(self.imgcoords(x,y))
c.close_path()
for interior in f.interiors:
c.new_sub_path()
c.move_to(*self.imgcoords(*f.coords[0]))
for x, y in f.exterior.coords[1:]:
c.line_to(self.imgcoords(x,y))
c.close_path()
if ss.style_fill(c, data, pxlsz):
cr.fill_preserve()
if ss.style_stroke(c, data, pxlsz):
cr.stroke()
label = ss.get_label(data)
if label and len(label) > 0 and ss.style_label(c, data, pxlsz):
anchor = self.imgcoords(*f.representative_point())
xbear, ybear, width, height, _0, _1 = cr.text_extents(label)
width = width * pxlsz[0]
xoff = -(width+xbear) / 2.0
yoff = (height-ybear) / 2.0
c.move_to(anchor[0]+xoff, anchor[1]+yoff)
if ss.style_labelhalo(c, data, pxlsz):
c.text_path(label)
c.stroke()
c.text_path(label)
if ss.style_labelfill(c, data, pxlsz):
c.fill_preserve()
if ss.style_labelstroke(c, data, pxlsz):
c.stroke()
def _render_polygon(self, f, data, pxlsz, ss):
c = self._slatectx
c.set_operator(cr.OPERATOR_OVER)
c.move_to(*self.imgcoords(*f.coords[0]))
for x, y in f.exterior.coords[1:]:
c.line_to(self.imgcoords(x, y))
c.close_path()
for interior in f.interiors:
c.new_sub_path()
c.move_to(*self.imgcoords(*f.coords[0]))
for x, y in f.exterior.coords[1:]:
c.line_to(self.imgcoords(x, y))
c.close_path()
if ss.style_fill(c, data, pxlsz):
cr.fill_preserve()
if ss.style_stroke(c, data, pxlsz):
cr.stroke()
label = ss.get_label(data)
if label and len(label) > 0 and ss.style_label(c, data, pxlsz):
anchor = self.imgcoords(*f.representative_point())
xbear, ybear, width, height, _0, _1 = cr.text_extents(label)
width = width * pxlsz[0]
xoff = -(width + xbear) / 2.0
yoff = (height - ybear) / 2.0
c.move_to(anchor[0] + xoff, anchor[1] + yoff)
if ss.style_labelhalo(c, data, pxlsz):
c.text_path(label)
c.stroke()
c.text_path(label)
if ss.style_labelfill(c, data, pxlsz):
c.fill_preserve()
if ss.style_labelstroke(c, data, pxlsz):
c.stroke()
