Combo Box
#!/usr/bin/env python # [SNIPPET_NAME: Combo Box] # [SNIPPET_CATEGORIES: PyKDE4] # [SNIPPET_DESCRIPTION: An enhanced combo box which is a combined button, line-edit and popup list widget] # [SNIPPET_AUTHOR: Jim Bublitz <[email protected]>] # [SNIPPET_LICENSE: GPL] # [SNIPPET_DOCS: http://api.kde.org/pykde-4.3-api/kdeui/KComboBox.html] from PyQt4.QtCore import SIGNAL, Qt from PyQt4.QtGui import QLabel from PyKDE4.kdecore import i18n, KStandardDirs from PyKDE4.kdeui import KVBox, KHBox, KComboBox, KListWidget helpText = """ KListWidget and KComboBox are useful for displaying or interacting with lists of items. In this case, we display the KStandardDirs file types and directory locations. KComboBox is filled from the QStringList that the method "allTypes()" returns. It can also be filled with a single item at a time, and we can sort or add/remove items later. KDE has specialized KComboBox subclasses for other purposes. It inherits methods from QComboBox KListWidget also displays lists of information, but all are visible at the same time. It inherits classes from QListWidget and QListView. """ class MainFrame(KVBox): def __init__(self, parent=None): KVBox.__init__(self, parent) self.help = QLabel (i18n (helpText), self) self.layout ().setAlignment (self.help, Qt.AlignHCenter) self.setSpacing (10) hBox = KHBox (self) self.layout ().setAlignment (hBox, Qt.AlignHCenter) cBox = KVBox (hBox) hBox.layout ().setAlignment (cBox, Qt.AlignTop) hBox.setSpacing (25) hBox.setMargin (10) self.stdDirs = KStandardDirs () types = self.stdDirs.allTypes () comboLbl = QLabel ("Types", cBox) combo = KComboBox (cBox) combo.addItems (types) cBox.layout ().setAlignment (comboLbl, Qt.AlignTop) cBox.layout ().setAlignment (combo, Qt.AlignTop) self.connect (combo, SIGNAL ("currentIndexChanged (const QString&)"), self.slotIndexChanged) lBox = KVBox (hBox) listLbl = QLabel ("Directories", lBox) self.location = KListWidget (lBox) self.location.setMaximumSize (400, 200) lBox.layout ().setAlignment (listLbl, Qt.AlignTop) lBox.layout ().setAlignment (self.location, Qt.AlignTop) self.slotIndexChanged (combo.currentText ()) def slotIndexChanged (self, s): self.location.clear () self.location.insertItems (0, self.stdDirs.resourceDirs (str (s))) # This example can be run standalone if __name__ == '__main__': import sys from PyKDE4.kdecore import KCmdLineArgs, KAboutData, KLocalizedString, ki18n from PyKDE4.kdeui import KApplication, KMainWindow class MainWin (KMainWindow): def __init__ (self, *args): KMainWindow.__init__ (self) self.resize(640, 480) self.setCentralWidget (MainFrame (self)) #-------------------- main ------------------------------------------------ appName = "default" catalog = "" programName = ki18n ("default") #ki18n required here version = "1.0" description = ki18n ("Default Example") #ki18n required here license = KAboutData.License_GPL copyright = ki18n ("(c) 2007 Jim Bublitz") #ki18n required here text = ki18n ("none") #ki18n required here homePage = "www.riverbankcomputing.com" bugEmail = "[email protected]" aboutData = KAboutData (appName, catalog, programName, version, description, license, copyright, text, homePage, bugEmail) # ki18n required for first two addAuthor () arguments aboutData.addAuthor (ki18n ("Troy Melhase"), ki18n ("original concept")) aboutData.addAuthor (ki18n ("Jim Bublitz"), ki18n ("pykdedocs")) KCmdLineArgs.init (sys.argv, aboutData) app = KApplication () mainWindow = MainWin (None, "main window") mainWindow.show() app.connect (app, SIGNAL ("lastWindowClosed ()"), app.quit) app.exec_ ()