+++ /dev/null
-#Written by Robin Burchell
-# No licence specified or required, but please give credit where it's due, and please let me know if this helped you.
-# Feel free to contact with corrections or suggestions.
-#
-# We're using PySide, Nokia's official LGPL bindings.
-# You can however easily use PyQt (Riverside Computing's GPL bindings) by commenting these and fixing the appropriate imports.
-#from PySide.QtCore import *
-#from PySide.QtGui import *
-from PyQt4 import *
-from PyQt4.QtCore import *
-from PyQt4.QtGui import *
-import sys
-
-# This is our model. It will maintain, modify, and present data to our view(s).
-# As this is read-only, it's pretty straightforward, but it can get pretty complex.
-# This is something that Qt Development Frameworks/Nokia are aware of and working on, in terms of
-# better documentation, as well as a better implementation of all this, but both of those aren't
-# really within the scope of this tutorial. ;)
-#
-# For more information on list models, take a look at:
-# http://doc.trolltech.com/4.6/qabstractitemmodel.html
-# but do bear in mind there are other models (like tables) available, depending on your data needs.
-# Again, beyond the scope of this tutorial for now. :)
-class SimpleListModel(QAbstractListModel):
- def __init__(self, mlist):
- QAbstractListModel.__init__(self)
-
- # Cache the passed data list as a class member.
- self._items = mlist
-
- # We need to tell the view how many rows we have present in our data.
- # For us, at least, it's fairly straightforward, as we have a python list of data,
- # so we can just return the length of that list.
- def rowCount(self, parent = QModelIndex()):
- return len(self._items)
-
- # Here, it's a little more complex.
- # data() is where the view asks us for all sorts of information about our data:
- # this can be purely informational (the data itself), as well as all sorts of 'extras'
- # such as how the data should be presented.
- #
- # For the sake of keeping it simple, I'm only going to show you the data, and one presentational
- # aspect.
- #
- # For more information on what kind of data the views can ask for, take a look at:
- # http://doc.trolltech.com/4.6/qabstractitemmodel.html#data
- #
- # Oh, and just to clarify: when it says 'invalid QVariant', it means a null QVariant.
- # i.e. QVariant().
- #
- # 'index' is of type QModelIndex, which actually has a whole host of stuff, but we
- # only really care about the row number for the sake of this tutorial.
- # For more information, see:
- # http://doc.trolltech.com/4.6/qmodelindex.html
- def data(self, index, role = Qt.DisplayRole):
- if role == Qt.DisplayRole:
- # The view is asking for the actual data, so, just return the item it's asking for.
- return QVariant(self._items[index.row()])
- elif role == Qt.BackgroundRole:
- # Here, it's asking for some background decoration.
- # Let's mix it up a bit: mod the row number to get even or odd, and return different
- # colours depending.
- # (you can, and should, more easily do this using this:
- # http://doc.trolltech.com/4.6/qabstractitemview.html#alternatingRowColors-prop
- # but I deliberately chose to show that you can put your own logic/processing here.)
- #
- # Exercise for the reader: make it print different colours for each row.
- # Implementation is up to you.
- if index.row() % 2 == 0:
- return QVariant(QColor(Qt.gray))
- else:
- return QVariant(QColor(Qt.lightGray))
- else:
- # We don't care about anything else, so make sure to return an empty QVariant.
- return QVariant()
-
-# This widget is our view of the readonly list.
-# Obviously, in a real application, this will be more complex, with signals/etc usage, but
-# for the scope of this tutorial, let's keep it simple, as always.
-#
-# For more information, see:
-# http://doc.trolltech.com/4.6/qlistview.html
-class SimpleListView(QListView):
- def __init__(self, parent = None):
- QListView.__init__(self, parent)
-
-# Our main application window.
-# You should be used to this from previous tutorials.
-class MyMainWindow(QWidget):
- def __init__(self):
- QWidget.__init__(self, None)
-
- # main section of the window
- vbox = QVBoxLayout()
-
- # create a data source:
- m = SimpleListModel(["test", "tes1t", "t3est", "t5est", "t3est"])
-
- # let's add two views of the same data source we just created:
- v = SimpleListView()
- v.setModel(m)
- vbox.addWidget(v)
-
- # second view..
- v = SimpleListView()
- v.setModel(m)
- vbox.addWidget(v)
-
- # bottom section of the window
- hbox = QHBoxLayout()
-
- # add bottom to main window layout
- vbox.addLayout(hbox)
-
- # set layout on the window
- self.setLayout(vbox)
-
-# set things up, and run it. :)
-if __name__ == '__main__':
- app = QApplication(sys.argv)
- w = MyMainWindow()
- w.show()
- app.exec_()
- sys.exit()
projects / retroconv / blobdiff