Experiment with using table axes for heatmaps.

Author: tshead2

design/table-heatmap.ipynb

@@ -1304,6 +1304,7 @@ def __init__(self, row=None, column=None, align=None, style=None):
       self._format = Table.Cell.default_format
       self._align = align
       self._style = style
+      self._bstyle = None
       self._data = None
       self._width = None
       self._height = None
@@ -1351,6 +1352,12 @@ def _set_style(self, value):
         cell._style = toyplot.style.combine(cell._style, value)
     style = property(fset=_set_style)
 
+    def _set_bstyle(self, value):
+      value = toyplot.require.style(value)
+      for cell in self._cells.flat:
+        cell._bstyle = toyplot.style.combine(cell._bstyle, value)
+    bstyle = property(fset=_set_bstyle)
+
     def _set_width(self, value):
       for cell in self._cells.flat:
         cell._width = value

toyplot/axes.py

@@ -806,7 +806,8 @@ def _render(canvas, axes, context):
 
   # Render visible cells.
   for cell in axes._visible_cells:
-    # xml.SubElement(axes_xml, "rect", x=repr(cell._left), y=repr(cell._top), width=repr(cell._right - cell._left), height=repr(cell._bottom - cell._top), style=_css_style({"stroke":"black", "fill":"white"}))
+    if cell._bstyle is not None:
+      xml.SubElement(axes_xml, "rect", x=repr(cell._left), y=repr(cell._top), width=repr(cell._right - cell._left), height=repr(cell._bottom - cell._top), style=_css_style(cell._bstyle))
 
     if cell._data is None:
       continue