Import gviz/gviz depending things just in time to lighten base memory usage

printrun/gui/viz.py

@@ -18,8 +18,6 @@ import logging
 
 import wx
 
-from printrun import gviz
-
 class NoViz(object):
 
     showall = False
@@ -78,6 +76,7 @@ class VizPane(wx.BoxSizer):
                               + "Falling back to 2D view, and here is the backtrace:\n"
                               + traceback.format_exc())
         if use2dview:
+            from printrun import gviz
             root.gviz = gviz.Gviz(parentpanel, (300, 300),
                                   build_dimensions = root.build_dimensions_list,
                                   grid = (root.settings.preview_grid_step1, root.settings.preview_grid_step2),
@@ -100,6 +99,7 @@ class VizPane(wx.BoxSizer):
                               + "Falling back to 2D view, and here is the backtrace:\n"
                               + traceback.format_exc())
         if not use3dview:
+            from printrun import gviz
             root.gwindow = gviz.GvizWindow(build_dimensions = root.build_dimensions_list,
                                            grid = (root.settings.preview_grid_step1, root.settings.preview_grid_step2),
                                            extrusion_width = root.settings.preview_extrusion_width,

printrun/pronterface.py

@@ -57,7 +57,6 @@ class PronterfaceQuitException(Exception):
     pass
 
 from .gui import MainWindow
-from .excluder import Excluder
 from .settings import wxSetting, HiddenSetting, StringSetting, SpinSetting, \
     FloatSpinSetting, BooleanSetting, StaticTextSetting
 from printrun import gcoder
@@ -775,6 +774,7 @@ class PronterWindow(MainWindow, pronsole.pronsole):
             wx.CallAfter(self.statusbar.SetStatusText, _("No file loaded. Please use load first."))
             return
         if not self.excluder:
+            from .excluder import Excluder
             self.excluder = Excluder()
         self.excluder.pop_window(self.fgcode, bgcolor = self.bgcolor,
                                  build_dimensions = self.build_dimensions_list)