def _write(self, shapes, svg_file, width, height, stroke_colour = None, stroke_width = None, background_colour = None):
svg_file.write('<?xml version="1.0" standalone="no"?>\n'
'<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN"\n'
' "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">\n')
svg_file.write('<svg width="%.6fcm" height="%.6fcm" ' % (width, height))
svg_file.write('viewBox="%.6f %.6f %.6f %.6f" '
'xmlns="http://www.w3.org/2000/svg" '
'version="1.1">\n' % (0.0, 0.0, width, height))
if stroke_width is None:
stroke_width = "0.1%"
if background_colour is not None:
svg_file.write('<polygon fill="%s" ' % background_colour)
svg_file.write('points="%.6f,%.6f %.6f,%.6f %.6f,%.6f %.6f,%.6f" />\n' % (
0.0, 0.0, width, 0.0, width, height, 0.0, height))
path = QPainterPath()
shapes.reverse()
new_shapes = {}
for points, polygon in shapes:
rgb = self.parts.colours.get(polygon.colour, "#ffffff")
new_points = []
for x, y in points:
new_points.append(QPointF(x + width/2.0, height/2.0 - y))
new_polygon = QPolygonF(new_points)
new_path = QPainterPath()
new_path.addPolygon(new_polygon)
if path.contains(new_path):
continue
inter = path.intersected(new_path)
remaining = new_path.subtracted(inter)
# Combine the new path with the accumulated path and simplify
# the result.
path = path.united(new_path)
path = path.simplified()
piece_dict = new_shapes.setdefault(polygon.piece, {})
colour_path = piece_dict.get(polygon.colour, QPainterPath())
piece_dict[polygon.colour] = colour_path.united(remaining)
for piece, piece_dict in new_shapes.items():
svg_file.write('<g>\n')
for colour, colour_path in piece_dict.items():
if colour_path.isEmpty():
continue
rgb = self.parts.colours.get(colour, "#ffffff")
shape = '<path style="fill:%s; opacity:%f" d="' % (
rgb, self._opacity_from_colour(colour))
i = 0
in_path = False
while i < colour_path.elementCount():
p = colour_path.elementAt(i)
if p.type == QPainterPath.MoveToElement:
if in_path:
shape += 'Z '
shape += 'M %.6f %.6f ' % (p.x, p.y)
in_path = True
elif p.type == QPainterPath.LineToElement:
shape += 'L %.6f %.6f ' % (p.x, p.y)
i += 1
if in_path:
shape += 'Z'
shape += '" />\n'
svg_file.write(shape)
svg_file.write('</g>\n')
svg_file.write("</svg>\n")
svg_file.close()
