Ticket #5: rotate-x.patch

chart.py

@@ -17 +17 @@
 
 import copy
 import cairo
+import math
 
 from pycha.color import (defaultColorscheme, getColorscheme, hex2rgb,
                          DEFAULT_COLOR)
@@ -349 +350 @@
                     cx.line_to(x, y + self.options.axis.tickSize)
                     cx.close_path()
                     cx.stroke()
+                    cx.fill()
 
+                    cx.new_path()
                     label = unicode(tick[1])
                     extents = cx.text_extents(label)
                     labelWidth = extents[2]
                     labelHeight = extents[3]
-                    cx.move_to(x - labelWidth / 2.0,
+                    if self.options.axis.x.rotate:
+                        cx.move_to(x, y + self.options.axis.tickSize + 10)
+                        degrees = self.options.axis.x.rotate
+                        cx.rotate(degrees*math.pi/180.)
+                        cx.show_text(label)
+                        cx.rotate(-degrees*math.pi/180.)
+                    else:
+                        cx.move_to(x - labelWidth / 2.0,
                                y + self.options.axis.tickSize + 10)
-                    cx.show_text(label)
+                        cx.show_text(label)
                     return label
                 for tick in self.xticks:
                     drawXLabel(tick)
@@ -456 +466 @@
             tickCount=10,
             tickPrecision=1,
             range=None,
+            rotate=None,
         ),
         y=Option(
             hide=False,