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Diffstat (limited to 'sandbox/cliechti/aafigure/svg.py')
| -rw-r--r-- | sandbox/cliechti/aafigure/svg.py | 145 |
1 files changed, 0 insertions, 145 deletions
diff --git a/sandbox/cliechti/aafigure/svg.py b/sandbox/cliechti/aafigure/svg.py deleted file mode 100644 index b10423654..000000000 --- a/sandbox/cliechti/aafigure/svg.py +++ /dev/null @@ -1,145 +0,0 @@ -""" -SVG renderer. - -(C) 2006 Chris Liechti <cliechti@gmx.net> -""" - -from xml.sax.saxutils import escape - -class SVGOutputVisitor: - """Render a list of shapes as ASCII art. - """ - - def __init__(self, file_like, scale = 1, unit='px', debug=False): - self.file_like = file_like - self.scale = scale - self.unit = unit - self.debug = debug - - def _num(self, number): - """helper number to format numers for svg output""" - return "%d%s" % (int(number*self.scale), self.unit) - - def get_size_attrs(self): - """get image size as svg text""" - #this function is here beacuse of a hack. the rst2html converter - #has to know the size of the figure it inserts - return 'width="%s" height="%s"' % ( - self._num(self.width), - self._num(self.height) - ) - - def visit(self, aa_image): - """Process the gived ASCIIArtFigure and output the shapes in - the SVG file - """ - self.aa_image = aa_image #save fore later XXX not optimal to do it here - self.width = (aa_image.width+1)*aa_image.nominal_size - self.height = (aa_image.height+1)*aa_image.nominal_size - self.file_like.write("""\ -<?xml version="1.0" standalone="no" ?> -<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 20010904//EN" - "http://www.w3.org/TR/2001/REC-SVG-20010904/DTD/svg10.dtd"> -<svg width="%s" height="%s" xmlns="http://www.w3.org/2000/svg" - xmlns:xlink="http://www.w3.org/1999/xlink"> -""" % ( - self._num(self.width), - self._num(self.height) - )) - - #~ if self.debug: - #~ #draw a rectangle around entire image - #~ self._rectangle( - #~ 0,0, - #~ aa_image.width, aa_image.height, - #~ style = 'fill:none;', - #~ ) - - for shape in aa_image.shapes: - shape_name = shape.__class__.__name__.lower() - visitor_name = 'visit_%s' % shape_name - if hasattr(self, visitor_name): - getattr(self, visitor_name)(shape) - else: - print "don't know how to handle shape %r" % shape - - self.file_like.write("""</svg>""") - - # - - - - - - SVG drawing helpers - - - - - - - - def _line_c(self, p1, p2): - """Draw a line, coordinates given as complex number""" - self._line(p1.real, p1.imag, p2.real, p2.imag) - - def _line(self, x1, y1, x2, y2): - """Draw a line, coordinates given as four decimal numbers""" - self.file_like.write("""\ -<line x1="%s" y1="%s" x2="%s" y2="%s" - style="stroke:black; stroke-width:2px;" /> -""" % (self._num(x1), self._num(y1), self._num(x2), self._num(y2))) - - def _rectangle(self, x1, y1, x2, y2, style=''): - """Draw a rectange, coordinates given as four decimal numbers. - ``style`` is inserted in the SVG. It could be e.g. "fill:yellow" - """ - self.file_like.write("""\ -<rect x="%s" y="%s" - width="%s" - height="%s" - style="stroke:black; stroke-width:2px; %s" -/> -""" % ( - self._num(x1), self._num(y1), - self._num(x2-x1), self._num(y2-y1), - style - )) - - # - - - - - - visitor function for the different shape types - - - - - - - - - def visit_point(self, point): - self.file_like.write("""\ -<cirlce cx="%s" cy="%s" r="%s" - style="fill:black; stroke:black; stroke-width:2px;" /> -""" % (self._num(point.x), self._num(point.y), self._num(2))) - - def visit_line(self, line): - self.file_like.write("<!-- line -->\n") - x1, x2 = line.start.x, line.end.x - y1, y2 = line.start.y, line.end.y - self._line(x1, y1, x2, y2) - #arrows - p1 = complex(line.start.x,line.start.y) - p2 = complex(line.end.x,line.end.y) - if line.start_style: - self.file_like.write("<!-- start arrow -->\n") - directon_vector = p1 - p2 - directon_vector /= abs(directon_vector) - self._line_c(p1, p1-directon_vector+directon_vector*0.5j) - self._line_c(p1, p1-directon_vector+directon_vector*-0.5j) - if line.end_style: - self.file_like.write("<!-- end arrow -->\n") - directon_vector = p2 - p1 - directon_vector /= abs(directon_vector) - self._line_c(p2, p2-directon_vector+directon_vector*0.5j) - self._line_c(p2, p2-directon_vector+directon_vector*-0.5j) - - def visit_rectangle(self, rectangle): - self._rectangle( - rectangle.p1.x, rectangle.p1.y, - rectangle.p2.x, rectangle.p2.y - ) - - def visit_label(self, label): - # font-weight="bold" - self.file_like.write("""\ -<text x="%s" y="%s" - font-family="Verdana,sans-serif" - font-size="%s" -> - %s -</text> -""" % ( - self._num(label.position.x), self._num(label.position.y-0.3), #XXX static offset not good in all situations - self._num(self.aa_image.nominal_size), - escape(label.text) - )) - |