Merge pull request #351 from padix-key/issue-345

Fix #345
biotite-dev · Aug 27, 2021 · 7642539 · 7642539
2 parents e147d65 + e8b9ea1
commit 7642539
Showing 1 changed file with 26 additions and 19 deletions.
diff --git a/src/biotite/visualize.py b/src/biotite/visualize.py
@@ -12,6 +12,21 @@
 from numpy.linalg import norm
 
 
+# Biotite themed colors
+colors = OrderedDict([
+    ("brightorange" , "#ffb569ff"),
+    ("lightorange"  , "#ff982dff"),
+    ("orange"       , "#ff8405ff"),
+    ("dimorange"    , "#dc7000ff"),
+    ("darkorange"   , "#b45c00ff"),
+    ("brightgreen"  , "#98e97fff"),
+    ("lightgreen"   , "#6fe04cff"),
+    ("green"        , "#52da2aff"),
+    ("dimgreen"     , "#45bc20ff"),
+    ("darkgreen"    , "#389a1aff"),
+])
+
+
 def set_font_size_in_coord(text, width=None, height=None, mode="unlocked"):
     """
     Specifiy the font size of an existing `Text` object in coordinates
@@ -61,7 +76,6 @@ def set_font_size_in_coord(text, width=None, height=None, mode="unlocked"):
     the boundaries for an initial size of 1 'pt' seem to be most exact.
     """
     from matplotlib.transforms import Bbox
-    from matplotlib.text import Text
     from matplotlib.patheffects import AbstractPathEffect
 
     class TextScaler(AbstractPathEffect):
@@ -73,8 +87,16 @@ def __init__(self, text, width, height, mode):
 
         def draw_path(self, renderer, gc, tpath, affine, rgbFace=None):
             ax = self._text.axes
-            renderer = ax.get_figure().canvas.get_renderer()
-            bbox = text.get_window_extent(renderer=renderer)
+            try:
+                renderer = ax.get_figure().canvas.get_renderer()
+            except:
+                # Use cached renderer for backends, where
+                # `get_renderer()` is not available
+                # Based on the strategy from `Text.get_window_extent()`
+                renderer = ax.get_figure()._cachedRenderer
+            if renderer is None:
+                raise
+            bbox = text.get_window_extent(renderer)
             bbox = Bbox(ax.transData.inverted().transform(bbox))
 
             if self._mode == "proportional":
@@ -225,19 +247,4 @@ def set_in_layout(self, in_layout):
     __all__.append("AdaptiveFancyArrow")
 
 except ImportError:
-    pass
-
-
-# Biotite themed colors
-colors = OrderedDict([
-    ("brightorange" , "#ffb569ff"),
-    ("lightorange"  , "#ff982dff"),
-    ("orange"       , "#ff8405ff"),
-    ("dimorange"    , "#dc7000ff"),
-    ("darkorange"   , "#b45c00ff"),
-    ("brightgreen"  , "#98e97fff"),
-    ("lightgreen"   , "#6fe04cff"),
-    ("green"        , "#52da2aff"),
-    ("dimgreen"     , "#45bc20ff"),
-    ("darkgreen"    , "#389a1aff"),
-])
+    pass