Here are some notes I made -- I hope it might save someone a bit of
time.
So, I finally tried out a few other backends on mac os x. I had been
recommending and using TkAgg, as this works out of the box on mac os
x. However, it seems unsnappy sometimes, and there was this strange
issue with the first window not giving control back to the command line.
QT4 takes *forever* to compile, but it seems to compile easier now
than previous versions that needed a small library hack. The default
configuration compiles and installs fine. The other tools (PyQt4 and
SIP) also compile and install painlessly with the default configuration.
I initially forgot to set the -q4thread for ipython (since the other -
pylab flag is hidden in a launching script). After that it worked
mostly fine.
I found that the correct threading was sensitive to how I started
ipython. I have been using terminal, and I was starting ipython like
this:
bash -l -c /path/to/ipython -q4thread
from within a terminal .term file (i.e., the terminal starts running
ipython automatically). This seems to not work great. However, when
I put this command in a script, and run the script like
bash -l -c pylab_start_script
thinks work as expected. This is also true when just typing these
commands in on the command line. I almost always start ipython from
a terminal .term file from quicksilver. This gives me a dedicated
(color coded) ipython window instantly that does not take away my
shell. This is all pretty slick, and I am pleased with the setup now.
Developers: Finally, I had to make some small changes to the qt4
backend so that things worked right. One is an essential change --
the latin1() method no longer exists in the newer qt. The other is a
cosmetic change so that I can see the cursor position in the toolbar
better. Diff below.
-Rob
Index: backend_qt4.py
===================================================================
--- backend_qt4.py (revision 2999)
+++ backend_qt4.py (working copy)
@@ -148,7 +148,7 @@
def _get_key( self, event ):
if event.key() < 256:
- key = event.text().latin1()
+ key = str(event.text())
elif self.keyvald.has_key( event.key() ):
key = self.keyvald[ event.key() ]
else:
@@ -290,7 +290,7 @@
# The automatic layout doesn't look that good - it's
too close
# to the images so add a margin around it.
- margin = 4
+ margin = 12
button.setFixedSize( image.width()+margin, image.height
()+margin )
QtCore.QObject.connect( button, QtCore.SIGNAL( 'clicked
()' ),
@@ -301,7 +301,7 @@
# The stretch factor is 1 which means any resizing of the
toolbar
# will resize this label instead of the buttons.
self.locLabel = QtGui.QLabel( "", self )
- self.locLabel.setAlignment( QtCore.Qt.AlignRight |
QtCore.Qt.AlignVCenter )
+ self.locLabel.setAlignment( QtCore.Qt.AlignRight |
QtCore.Qt.AlignTop )
self.locLabel.setSizePolicy(QtGui.QSizePolicy
(QtGui.QSizePolicy.Ignored,
QtGui.QSizePolicy.Ignored))
self.layout.addWidget( self.locLabel, 1 )
----
Rob Hetland, Associate Professor
Dept. of Oceanography, Texas A&M University
http://pong.tamu.edu/~rob
phone: 979-458-0096, fax: 979-845-6331
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