Revision: 5831
http://matplotlib.svn.sourceforge.net/matplotlib/?rev=5831&view=rev
Author: dmkaplan
Date: 2008-07-24 10:02:13 +0000 (Thu, 24 Jul 2008)
Log Message:
-----------
Moving "event loop" stuff from blocking_input.py to backends. For backends
without a GUI, the default is to throw a NotImplemented error. For backends
with a GUI, I have implemented a "start/stop_event_loop_default" that does
the default event loop using time.sleep. For WX, I have used the code
supplied by Paul Kienzle, but I have been unable to check it because that
backend currently doesn't work for me.
Modified Paths:
--------------
trunk/matplotlib/lib/matplotlib/backend_bases.py
trunk/matplotlib/lib/matplotlib/backends/backend_cocoaagg.py
trunk/matplotlib/lib/matplotlib/backends/backend_fltkagg.py
trunk/matplotlib/lib/matplotlib/backends/backend_gtk.py
trunk/matplotlib/lib/matplotlib/backends/backend_qt.py
trunk/matplotlib/lib/matplotlib/backends/backend_qt4.py
trunk/matplotlib/lib/matplotlib/backends/backend_tkagg.py
trunk/matplotlib/lib/matplotlib/backends/backend_wx.py
trunk/matplotlib/lib/matplotlib/blocking_input.py
Modified: trunk/matplotlib/lib/matplotlib/backend_bases.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backend_bases.py 2008-07-24 08:50:43 UTC
(rev 5830)
+++ trunk/matplotlib/lib/matplotlib/backend_bases.py 2008-07-24 10:02:13 UTC
(rev 5831)
@@ -23,7 +23,7 @@
"""
from __future__ import division
-import os, warnings
+import os, warnings, time
import numpy as np
import matplotlib.cbook as cbook
@@ -1391,7 +1391,76 @@
"""
raise NotImplementedError
+ def start_event_loop(self,*args,**kwargs):
+ """
+ Start an event loop. This is used to start a blocking event
+ loop so that interactive functions, such as ginput and
+ waitforbuttonpress, can wait for events. This should not be
+ confused with the main GUI event loop, which is always running
+ and has nothing to do with this.
+ This is implemented only for backends with GUIs.
+ """
+ raise NotImplementedError
+
+ def stop_event_loop(self,*args,**kwargs):
+ """
+ Stop an event loop. This is used to stop a blocking event
+ loop so that interactive functions, such as ginput and
+ waitforbuttonpress, can wait for events.
+
+ This is implemented only for backends with GUIs.
+ """
+ raise NotImplementedError
+
+ def start_event_loop_default(self,timeout=0):
+ """
+ Start an event loop. This is used to start a blocking event
+ loop so that interactive functions, such as ginput and
+ waitforbuttonpress, can wait for events. This should not be
+ confused with the main GUI event loop, which is always running
+ and has nothing to do with this.
+
+ This function provides default event loop functionality based
+ on time.sleep that is meant to be used until event loop
+ functions for each of the GUI backends can be written. As
+ such, it throws a deprecated warning.
+
+ Call signature::
+
+ start_event_loop_default(self,timeout=0)
+
+ This call blocks until a callback function triggers
+ stop_event_loop() or *timeout* is reached. If *timeout* is
+ <=0, never timeout.
+ """
+ str = "Using default event loop until function specific"
+ str += " to this GUI is implemented"
+ warnings.warn(str,DeprecationWarning)
+
+ if timeout <= 0: timeout = np.inf
+ timestep = 0.01
+ counter = 0
+ self._looping = True
+ while self._looping and counter*timestep < timeout:
+ self.flush_events()
+ time.sleep(timestep)
+ counter += 1
+
+ def stop_event_loop_default(self):
+ """
+ Stop an event loop. This is used to stop a blocking event
+ loop so that interactive functions, such as ginput and
+ waitforbuttonpress, can wait for events.
+
+ Call signature::
+
+ stop_event_loop_default(self)
+ """
+ self._looping = False
+
+
+
class FigureManagerBase:
"""
Helper class for matlab mode, wraps everything up into a neat bundle
Modified: trunk/matplotlib/lib/matplotlib/backends/backend_cocoaagg.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backends/backend_cocoaagg.py
2008-07-24 08:50:43 UTC (rev 5830)
+++ trunk/matplotlib/lib/matplotlib/backends/backend_cocoaagg.py
2008-07-24 10:02:13 UTC (rev 5831)
@@ -58,6 +58,16 @@
def blit(self, bbox):
pass
+ def start_event_loop(self,*args,**kwargs):
+ FigureCanvasBase.start_event_loop_default(self,*args,**kwargs)
+ start_event_loop.__doc__=FigureCanvasBase.start_event_loop_default.__doc__
+
+ def stop_event_loop(self,*args,**kwargs):
+ FigureCanvasBase.stop_event_loop_default(self,*args,**kwargs)
+ stop_event_loop.__doc__=FigureCanvasBase.stop_event_loop_default.__doc__
+
+
+
NibClassBuilder.extractClasses('Matplotlib.nib', mplBundle)
class MatplotlibController(NibClassBuilder.AutoBaseClass):
Modified: trunk/matplotlib/lib/matplotlib/backends/backend_fltkagg.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backends/backend_fltkagg.py 2008-07-24
08:50:43 UTC (rev 5830)
+++ trunk/matplotlib/lib/matplotlib/backends/backend_fltkagg.py 2008-07-24
10:02:13 UTC (rev 5831)
@@ -247,6 +247,14 @@
def widget(self):
return self.canvas
+ def start_event_loop(self,*args,**kwargs):
+ FigureCanvasBase.start_event_loop_default(self,*args,**kwargs)
+ start_event_loop.__doc__=FigureCanvasBase.start_event_loop_default.__doc__
+
+ def stop_event_loop(self,*args,**kwargs):
+ FigureCanvasBase.stop_event_loop_default(self,*args,**kwargs)
+ stop_event_loop.__doc__=FigureCanvasBase.stop_event_loop_default.__doc__
+
def destroy_figure(ptr,figman):
figman.window.hide()
Gcf.destroy(figman._num)
@@ -491,7 +499,7 @@
default_filetype = base.canvas.get_default_filetype()
sorted_filetypes = filetypes.items()
sorted_filetypes.sort()
-
+
selected_filter = 0
filters = []
for i, (ext, name) in enumerate(sorted_filetypes):
@@ -518,7 +526,7 @@
lastDir = os.path.dirname(fname)
file_chooser.directory(lastDir)
format = sorted_filetypes[file_chooser.filter_value()][0]
-
+
try:
base.canvas.print_figure(fname, format=format)
except IOError, msg:
Modified: trunk/matplotlib/lib/matplotlib/backends/backend_gtk.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backends/backend_gtk.py 2008-07-24
08:50:43 UTC (rev 5830)
+++ trunk/matplotlib/lib/matplotlib/backends/backend_gtk.py 2008-07-24
10:02:13 UTC (rev 5831)
@@ -396,7 +396,14 @@
gtk.gdk.flush()
gtk.gdk.threads_leave()
+ def start_event_loop(self,*args,**kwargs):
+ FigureCanvasBase.start_event_loop_default(self,*args,**kwargs)
+ start_event_loop.__doc__=FigureCanvasBase.start_event_loop_default.__doc__
+ def stop_event_loop(self,*args,**kwargs):
+ FigureCanvasBase.stop_event_loop_default(self,*args,**kwargs)
+ stop_event_loop.__doc__=FigureCanvasBase.stop_event_loop_default.__doc__
+
class FigureManagerGTK(FigureManagerBase):
"""
Public attributes
Modified: trunk/matplotlib/lib/matplotlib/backends/backend_qt.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backends/backend_qt.py 2008-07-24
08:50:43 UTC (rev 5830)
+++ trunk/matplotlib/lib/matplotlib/backends/backend_qt.py 2008-07-24
10:02:13 UTC (rev 5831)
@@ -177,6 +177,14 @@
def flush_events(self):
qt.qApp.processEvents()
+ def start_event_loop(self,*args,**kwargs):
+ FigureCanvasBase.start_event_loop_default(self,*args,**kwargs)
+ start_event_loop.__doc__=FigureCanvasBase.start_event_loop_default.__doc__
+
+ def stop_event_loop(self,*args,**kwargs):
+ FigureCanvasBase.stop_event_loop_default(self,*args,**kwargs)
+ stop_event_loop.__doc__=FigureCanvasBase.stop_event_loop_default.__doc__
+
class FigureManagerQT( FigureManagerBase ):
"""
Public attributes
Modified: trunk/matplotlib/lib/matplotlib/backends/backend_qt4.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backends/backend_qt4.py 2008-07-24
08:50:43 UTC (rev 5830)
+++ trunk/matplotlib/lib/matplotlib/backends/backend_qt4.py 2008-07-24
10:02:13 UTC (rev 5831)
@@ -181,6 +181,14 @@
def flush_events(self):
Qt.qApp.processEvents()
+ def start_event_loop(self,*args,**kwargs):
+ FigureCanvasBase.start_event_loop_default(self,*args,**kwargs)
+ start_event_loop.__doc__=FigureCanvasBase.start_event_loop_default.__doc__
+
+ def stop_event_loop(self,*args,**kwargs):
+ FigureCanvasBase.stop_event_loop_default(self,*args,**kwargs)
+ stop_event_loop.__doc__=FigureCanvasBase.stop_event_loop_default.__doc__
+
class FigureManagerQT( FigureManagerBase ):
"""
Public attributes
Modified: trunk/matplotlib/lib/matplotlib/backends/backend_tkagg.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backends/backend_tkagg.py 2008-07-24
08:50:43 UTC (rev 5830)
+++ trunk/matplotlib/lib/matplotlib/backends/backend_tkagg.py 2008-07-24
10:02:13 UTC (rev 5831)
@@ -287,6 +287,14 @@
def flush_events(self):
self._master.update()
+ def start_event_loop(self,*args,**kwargs):
+ FigureCanvasBase.start_event_loop_default(self,*args,**kwargs)
+ start_event_loop.__doc__=FigureCanvasBase.start_event_loop_default.__doc__
+
+ def stop_event_loop(self,*args,**kwargs):
+ FigureCanvasBase.stop_event_loop_default(self,*args,**kwargs)
+ stop_event_loop.__doc__=FigureCanvasBase.stop_event_loop_default.__doc__
+
class FigureManagerTkAgg(FigureManagerBase):
"""
Public attributes
Modified: trunk/matplotlib/lib/matplotlib/backends/backend_wx.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/backends/backend_wx.py 2008-07-24
08:50:43 UTC (rev 5830)
+++ trunk/matplotlib/lib/matplotlib/backends/backend_wx.py 2008-07-24
10:02:13 UTC (rev 5831)
@@ -1185,7 +1185,57 @@
if figManager is not None:
figManager.canvas.draw()
+ def start_event_loop(self, timeout=0):
+ """
+ Start an event loop. This is used to start a blocking event
+ loop so that interactive functions, such as ginput and
+ waitforbuttonpress, can wait for events. This should not be
+ confused with the main GUI event loop, which is always running
+ and has nothing to do with this.
+ Call signature::
+
+ start_event_loop(self,timeout=0)
+
+ This call blocks until a callback function triggers
+ stop_event_loop() or *timeout* is reached. If *timeout* is
+ <=0, never timeout.
+ """
+ root = self.GetTopLevelParent()
+ bind(root, wx.EVT_CLOSE, self.stop_event_loop)
+
+ id = wx.NewId()
+ timer = wx.Timer(self, id=id)
+ if timeout > 0:
+ timer.Start(timeout*1000, oneShot=True)
+ bind(self, wx.EVT_TIMER, self.stop_event_loop, id=id)
+ self._event_loop.Run()
+ timer.Stop()
+
+ def stop_event_loop(self, event=None):
+ """
+ Stop an event loop. This is used to stop a blocking event
+ loop so that interactive functions, such as ginput and
+ waitforbuttonpress, can wait for events.
+
+ Call signature::
+
+ stop_event_loop_default(self)
+ """
+ if self._event_loop.IsRunning():
+ self._event_loop.Exit()
+
+# Event binding code changed after version 2.5
+if wx.VERSION_STRING >= '2.5':
+ def bind(actor,event,action,**kw):
+ actor.Bind(event,action,**kw)
+else:
+ def bind(actor,event,action,id=None):
+ if id is not None:
+ event(actor, id, action)
+ else:
+ event(actor,action)
+
def show():
"""
Current implementation assumes that matplotlib is executed in a PyCrust
Modified: trunk/matplotlib/lib/matplotlib/blocking_input.py
===================================================================
--- trunk/matplotlib/lib/matplotlib/blocking_input.py 2008-07-24 08:50:43 UTC
(rev 5830)
+++ trunk/matplotlib/lib/matplotlib/blocking_input.py 2008-07-24 10:02:13 UTC
(rev 5831)
@@ -50,7 +50,7 @@
# Check if we have enough events already
if len(self.events) >= self.n and self.n > 0:
- self.done = True
+ self.fig.canvas.stop_event_loop()
def post_event(self):
"""For baseclass, do nothing but collect events"""
@@ -90,7 +90,6 @@
self.n = n
self.events = []
- self.done = False
self.callbacks = []
# Ensure that the figure is shown
@@ -101,17 +100,8 @@
self.callbacks.append( self.fig.canvas.mpl_connect(n,
self.on_event) )
try:
- # wait for n clicks
- counter = 0
- while not self.done:
- self.fig.canvas.flush_events()
- time.sleep(0.01)
-
- # check for a timeout
- counter += 1
- if timeout > 0 and counter > timeout/0.01:
- print "Timeout reached";
- break;
+ # Start event loop
+ self.fig.canvas.start_event_loop(timeout=timeout)
finally: # Run even on exception like ctrl-c
# Disconnect the callbacks
self.cleanup()
@@ -175,7 +165,7 @@
# consistent with matlab and sometimes quite useful, but will
# require the user to test how many points were actually
# returned before using data.
- self.done = True
+ self.fig.canvas.stop_event_loop()
def button3( self, event ):
"""
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