[PyQt] QDockWidget sizing behavior
Hello,
I'm laying out part of the UI for my app using a QMainWindow with no central
widget and 4 dock widgets. I'd like the dock widgets to be sized
proportionally to each other but they seem to ignore the value returned by
sizeHint(). Am I missing something?
- John
Here's a concrete example illustrating my problem:
import cPickle
import os.path
import sys
from PyQt4 import QtGui, QtCore
class _ViewContainer(QtGui.QMainWindow):
""" This class is a container for a view that allows an initial size
(specified as a tuple) to be set.
"""
def __init__(self, size, main_window):
QtGui.QMainWindow.__init__(self)
# Save the size and main window.
self._width, self._height = size
self._main_window = main_window
# set a minimum size to quiet Qt
self.setMinimumSize(100, 100)
self.setSizePolicy(QtGui.QSizePolicy.Preferred,
QtGui.QSizePolicy.Preferred)
def minimumSizeHint(self):
try:
return self.centralWidget().minimumSizeHint()
except AttributeError:
return super(_ViewContainer, self).minimumSizeHint()
def sizeHint(self):
sh = self.centralWidget().sizeHint()
if self._width > 0:
if self._width > 1:
w = self._width
else:
w = self._main_window.width() * self._width
sh.setWidth(int(w))
if self._height > 0:
if self._height > 1:
h = self._height
else:
h = self._main_window.height() * self._height
sh.setHeight(int(h))
return sh
class Ui_MainWindow(object):
def setupUi(self, MainWindow):
MainWindow.setObjectName("MainWindow")
MainWindow.resize(QtCore.QSize(QtCore.QRect(0,0,800,600).size()).expandedTo(MainWindow.minimumSizeHint()))
self.menubar = QtGui.QMenuBar(MainWindow)
self.menubar.setGeometry(QtCore.QRect(0,0,800,21))
self.menubar.setObjectName("menubar")
MainWindow.setMenuBar(self.menubar)
self.statusbar = QtGui.QStatusBar(MainWindow)
self.statusbar.setObjectName("statusbar")
MainWindow.setStatusBar(self.statusbar)
self.retranslateUi(MainWindow)
QtCore.QMetaObject.connectSlotsByName(MainWindow)
def retranslateUi(self, MainWindow):
MainWindow.setWindowTitle(QtGui.QApplication.translate("MainWindow",
"MainWindow",
None,
QtGui.QApplication.UnicodeUTF8))
class MainWindow(QtGui.QMainWindow, Ui_MainWindow):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.ui = Ui_MainWindow()
self.ui.setupUi(self)
self.createDockWindows()
def closeEvent(self, event):
self.saveLayout()
super(MainWindow, self).closeEvent(event)
def createDockWidget(self, name, size):
dock = QtGui.QDockWidget(name, self)
child = QtGui.QLabel(name)
vc = _ViewContainer(size, self)
dock.setWidget(vc)
dock.setObjectName(name)
self._qt4_adjust_widget_layout(child)
dock.widget().setCentralWidget(child)
return dock;
def createDockWindows(self):
dock1 = self.createDockWidget("Dock1", (0.5, 0.75))
self.addDockWidget(QtCore.Qt.TopDockWidgetArea, dock1)
dock2 = self.createDockWidget("Dock2", (0.5, 0.75))
self.addDockWidget(QtCore.Qt.BottomDockWidgetArea, dock2)
dock3 = self.createDockWidget("Dock3", (0.5, 0.25))
self.splitDockWidget(dock2, dock3, QtCore.Qt.Horizontal)
dock4 = self.createDockWidget("Dock4", (0.5, 0.25))
self.splitDockWidget(dock1, dock4, QtCore.Qt.Horizontal)
def saveLayout(self):
filename = './layout.dat'
f = file(filename, 'w')
state = str(self.saveState())
cPickle.dump((0,state), f)
f.close()
def restoreLayout(self):
filename = './layout.dat'
if os.path.exists(filename):
f = file(filename, 'r')
vers, state = cPickle.load(f)
f.close()
self.restoreState(state)
@staticmethod
def _qt4_adjust_widget_layout(w):
lay = w.layout()
if lay is not None:
lay.setAlignment(QtCore.Qt.AlignLeft|QtCore.Qt.AlignTop)
lay.setContentsMargins(0, 0, 0, 0)
def main():
app = QtGui.QApplication(sys.argv)
mainwindow = MainWindow()
mainwindow.restoreLayout()
mainwindow.show()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
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Re: [PyQt] QDockWidget sizing behavior
On Mon, Oct 11, 2010 at 10:33 AM, Hans-Peter Jansen wrote: > On Monday 11 October 2010, 16:17:21 John Wiggins wrote: > > Hello, > > > > I'm laying out part of the UI for my app using a QMainWindow with no > > central widget and 4 dock widgets. I'd like the dock widgets to be > > sized proportionally to each other but they seem to ignore the value > > returned by sizeHint(). Am I missing something? > > Without looking deeper into your code, there's something you should note > (from the Qt QDockWidget documentation): > > Appearance > [...] > A QDockWidget acts as a wrapper for its child widget, set with > setWidget(). Custom size hints, minimum and maximum sizes and size > policies should be implemented in the child widget. > > Hth, > Pete > Hello Pete, I've done all those things except setting a maximum size. Also, I didn't post this useful info before: python - 2.5.4 qt - 4.5.4 pyqt - 4.6.2 - John ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] QDockWidget sizing behavior
On Mon, Oct 11, 2010 at 2:21 PM, Hans-Peter Jansen wrote: > On Monday 11 October 2010, 17:58:35 John Wiggins wrote: > > On Mon, Oct 11, 2010 at 10:33 AM, Hans-Peter Jansen > wrote: > > > On Monday 11 October 2010, 16:17:21 John Wiggins wrote: > > > > Hello, > > > > > > > > I'm laying out part of the UI for my app using a QMainWindow with > > > > no central widget and 4 dock widgets. I'd like the dock widgets > > > > to be sized proportionally to each other but they seem to ignore > > > > the value returned by sizeHint(). Am I missing something? > > You could try to subclass the QLabels and implement sizeHint for them, > leaving _ViewContainer alone (size wise).. Let us know, if that helps. > > Since you have QMainWindows in each of your dock widgets, the outcome is > still hard to predict. You may want to reduce your example to the bare > minimum, e.g. with a single QMainWindow, if the above does not appear > to work. > > Pete > It's still not working. Here's my QLabel: class _Label(QtGui.QLabel): def __init__(self, name, size, main_window): QtGui.QLabel.__init__(self, name) # Save the size and main window. self._width, self._height = size self._main_window = main_window # set a minimum size to quiet Qt self.setMinimumSize(100, 100) self.setSizePolicy(QtGui.QSizePolicy.Preferred, QtGui.QSizePolicy.Preferred) def sizeHint(self): sh = QtCore.QSize(100, 100) if self._width > 0: if self._width > 1: w = self._width else: w = self._main_window.width() * self._width sh.setWidth(int(w)) if self._height > 0: if self._height > 1: h = self._height else: h = self._main_window.height() * self._height sh.setHeight(int(h)) return sh And since that didn't change the behavior at all, I took the extra QMainWindow instances out of the picture by modifying the createDockWidget() method in MainWindow: def createDockWidget(self, name, size): dock = QtGui.QDockWidget(name, self) child = _Label(name, size, self) dock.setWidget(child) dock.setObjectName(name) self._qt4_adjust_widget_layout(child) return dock That still has no effect on the original behavior. sizeHint() is called on the _Label instances and ignored. - John ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] QDockWidget sizing behavior
Wow, I feel daft now :) Thanks for the sharp gaze Baz. I'll look through the
more complicated code that this example is based on and see if the problem
was really this dumb...
- John
On Mon, Oct 11, 2010 at 6:04 PM, Baz Walter wrote:
> On 11/10/10 15:17, John Wiggins wrote:
>
>> Hello,
>>
>> I'm laying out part of the UI for my app using a QMainWindow with no
>> central
>> widget and 4 dock widgets. I'd like the dock widgets to be sized
>> proportionally to each other but they seem to ignore the value returned by
>> sizeHint(). Am I missing something?
>>
>> - John
>>
>> Here's a concrete example illustrating my problem:
>>
>
> [snip]
>
>
> def createDockWindows(self):
>> dock1 = self.createDockWidget("Dock1", (0.5, 0.75))
>> self.addDockWidget(QtCore.Qt.TopDockWidgetArea, dock1)
>> dock2 = self.createDockWidget("Dock2", (0.5, 0.75))
>> self.addDockWidget(QtCore.Qt.BottomDockWidgetArea, dock2)
>> dock3 = self.createDockWidget("Dock3", (0.5, 0.25))
>> self.splitDockWidget(dock2, dock3, QtCore.Qt.Horizontal)
>> dock4 = self.createDockWidget("Dock4", (0.5, 0.25))
>> self.splitDockWidget(dock1, dock4, QtCore.Qt.Horizontal)
>>
>
> this makes no sense: how can the top dock area and the bottom dock area
> *both* have 75% of the height?
>
> change dock2 to (0.5, 0.25), and dock4 to (0.5, 0.75), and it should work
> correctly (well, it does for me using qt4.7, anyway).
>
> (nb: and don't forget to disable your restoreLayout method before trying :)
>
> ___
> PyQt mailing listPyQt@riverbankcomputing.com
> http://www.riverbankcomputing.com/mailman/listinfo/pyqt
>
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Re: [PyQt] PyQt and MPI
I would recommend something based around QProcess or the python builtin subprocess module. Your GUI would set all the parameters as it does now, and when you hit the OK button it starts the mpirun command using one of the previously mentioned APIs. I suggest doing it this way because MPI doesn't really lend itself to interactive programs. I suppose it would be possible to block all the slave nodes with an MPI_recv() and then unblock them with a send on the master when things are ready but that would probably make your code nightmarishly complicated. HTH, - John On Fri, Oct 29, 2010 at 11:37 AM, dizou wrote: > > I have some code that uses Open MPI to do some pretty intense calculations > (KDEs). I made a GUI to set some parameters for the calculations. Is there > any way to integrate these two applications? > So what I would like to have is my GUI to my on one processor, and then > when > I click a button to do the calculations, the MPI stuff starts. > -- > View this message in context: > http://old.nabble.com/PyQt-and-MPI-tp30087634p30087634.html > Sent from the PyQt mailing list archive at Nabble.com. > > ___ > PyQt mailing listPyQt@riverbankcomputing.com > http://www.riverbankcomputing.com/mailman/listinfo/pyqt > ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
[PyQt] QMenu.setTitle on OS X
Hello, I've run into some strange behavior with QMenu's setTitle function failing on OS X, but only when called on the Help menu. Here's what I'm running: OS X 10.5.8; Qt 4.5.3(Carbon); PyQt 4.6; sip 4.9.3 If you run the attached program, select the "Change menu titles" item in the Options menu and note that Help menu title will not change. So I guess my questions are: Has anybody else run into this and found a workaround? Is it still happening in newer versions of Qt/OS X? Is this a Qt bug or a Carbon bug? - John qt_sandbox.py Description: Binary data ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
Re: [PyQt] QMenu.setTitle on OS X
Thanks for checking. Is it safe to assume this was a bug in Qt that was fixed sometime between 4.5.3 and 4.7.x? - John On Sat, Oct 1, 2011 at 4:04 AM, Phil Thompson wrote: > On Fri, 30 Sep 2011 16:52:18 -0500, John Wiggins > wrote: >> Hello, >> I've run into some strange behavior with QMenu's setTitle function >> failing on OS X, but only when called on the Help menu. Here's what >> I'm running: >> OS X 10.5.8; Qt 4.5.3(Carbon); PyQt 4.6; sip 4.9.3 >> If you run the attached program, select the "Change menu titles" item >> in the Options menu and note that Help menu title will not change. >> So I guess my questions are: Has anybody else run into this and found >> a workaround? Is it still happening in newer versions of Qt/OS X? Is >> this a Qt bug or a Carbon bug? >> >> - John > > Works fine for me with current versions of everything. > > Phil > ___ PyQt mailing listPyQt@riverbankcomputing.com http://www.riverbankcomputing.com/mailman/listinfo/pyqt
