Changeset 609462

Timestamp:

06/18/12 21:00:42 (12 months ago)

Author:

Tiago de Paula Peixoto <tiago@…>

Branches:

master

Children:

0adf28

Parents:

26c87a

git-author:

Tiago de Paula Peixoto <tiago@…> (06/18/12 21:00:42)

git-committer:

Tiago de Paula Peixoto <tiago@…> (06/18/12 21:00:42)

Message:

Implement fit_view option in cairo_draw()

File:

• src/graph_tool/draw/cairo_draw.py (modified) (4 diffs)

src/graph_tool/draw/cairo_draw.py

@@ -296 +296 @@
                nodesfirst=False, vcmap=matplotlib.cm.jet,
                ecmap=matplotlib.cm.jet, loop_angle=float("nan"),
-               parallel_distance=None, **kwargs):
+               parallel_distance=None, fit_view=False, **kwargs):
     r"""
     Draw a graph to a :mod:`cairo` context.
@@ -333 +333 @@
         Distance used between parallel edges. If not provided, it will be
         determined automatically.
+    fit_view : bool (optional, default: ``True``)
+        If ``True``, the layout will be scaled to fit the entire clip region.
     vertex_* : :class:`~graph_tool.PropertyMap` or arbitrary types (optional, default: ``None``)
         Parameters following the pattern ``vertex_<prop-name>`` specify the
@@ -353 +355 @@
     for k in kwargs:
         warnings.warn("Unknown parameter: " + k, UserWarning)
+
+    cr.save()
+    if fit_view:
+        extents = cr.clip_extents()
+        output_size = (extents[2] - extents[0], extents[3] - extents[1])
+        offset, zoom = fit_to_view(g, pos, output_size,
+                                   vprops.get("size", _vdefaults["size"]),
+                                   vprops.get("pen_width", _vdefaults["pen_width"]),
+                                   None, vprops.get("text", None),
+                                   vprops.get("font_family",
+                                              _vdefaults["font_family"]),
+                                   vprops.get("font_size",
+                                              _vdefaults["font_size"]),
+                                   cr)
+        cr.translate(offset[0], offset[1])
+        cr.scale(zoom, zoom)
 
     if "control_points" not in eprops:
@@ -384 +402 @@
                                   _prop("v", g, vorder), _prop("e", g, eorder),
                                   nodesfirst, vattrs, eattrs, vdefs, edefs, cr)
+    cr.restore()