--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/E5Gui/E5SideBar.py Wed Jan 13 18:53:58 2010 +0000
@@ -0,0 +1,550 @@
+# -*- coding: utf-8 -*-
+
+# Copyright (c) 2008 - 2010 Detlev Offenbach <detlev@die-offenbachs.de>
+#
+
+"""
+Module implementing a sidebar class.
+"""
+
+from PyQt4.QtCore import SIGNAL, SLOT, QEvent, QSize, Qt, QByteArray, \
+ QDataStream, QIODevice
+from PyQt4.QtGui import QTabBar, QWidget, QStackedWidget, QBoxLayout, QToolButton
+
+from E5Gui.E5Application import e5App
+
+import UI.PixmapCache
+
+class E5SideBar(QWidget):
+ """
+ Class implementing a sidebar with a widget area, that is hidden or shown, if the
+ current tab is clicked again.
+ """
+ Version = 1
+
+ North = 0
+ East = 1
+ South = 2
+ West = 3
+
+ def __init__(self, orientation = None, parent = None):
+ """
+ Constructor
+
+ @param orientation orientation of the sidebar widget (North, East, South, West)
+ @param parent parent widget (QWidget)
+ """
+ QWidget.__init__(self, parent)
+
+ self.__tabBar = QTabBar()
+ self.__tabBar.setDrawBase(True)
+ self.__tabBar.setShape(QTabBar.RoundedNorth)
+ self.__stackedWidget = QStackedWidget(self)
+ self.__stackedWidget.setContentsMargins(0, 0, 0, 0)
+ self.__autoHideButton = QToolButton()
+ self.__autoHideButton.setCheckable(True)
+ self.__autoHideButton.setIcon(UI.PixmapCache.getIcon("autoHideOff.png"))
+ self.__autoHideButton.setChecked(True)
+ self.__autoHideButton.setToolTip(
+ self.trUtf8("Deselect to activate automatic collapsing"))
+ self.barLayout = QBoxLayout(QBoxLayout.LeftToRight)
+ self.barLayout.setMargin(0)
+ self.layout = QBoxLayout(QBoxLayout.TopToBottom)
+ self.layout.setMargin(0)
+ self.layout.setSpacing(0)
+ self.barLayout.addWidget(self.__autoHideButton)
+ self.barLayout.addWidget(self.__tabBar)
+ self.layout.addLayout(self.barLayout)
+ self.layout.addWidget(self.__stackedWidget)
+ self.setLayout(self.layout)
+
+ self.__minimized = False
+ self.__minSize = 0
+ self.__maxSize = 0
+ self.__bigSize = QSize()
+
+ self.splitter = None
+ self.splitterSizes = []
+
+ self.__hasFocus = False # flag storing if this widget or any child has the focus
+ self.__autoHide = False
+
+ self.__tabBar.installEventFilter(self)
+
+ self.__orientation = E5SideBar.North
+ if orientation is None:
+ orientation = E5SideBar.North
+ self.setOrientation(orientation)
+
+ self.connect(self.__tabBar, SIGNAL("currentChanged(int)"),
+ self.__stackedWidget, SLOT("setCurrentIndex(int)"))
+ self.connect(e5App(), SIGNAL("focusChanged(QWidget*, QWidget*)"),
+ self.__appFocusChanged)
+ self.connect(self.__autoHideButton, SIGNAL("toggled(bool)"),
+ self.__autoHideToggled)
+
+ def setSplitter(self, splitter):
+ """
+ Public method to set the splitter managing the sidebar.
+
+ @param splitter reference to the splitter (QSplitter)
+ """
+ self.splitter = splitter
+
+ def shrink(self):
+ """
+ Public method to shrink the sidebar.
+ """
+ self.__minimized = True
+ self.__bigSize = self.size()
+ if self.__orientation in [E5SideBar.North, E5SideBar.South]:
+ self.__minSize = self.minimumHeight()
+ self.__maxSize = self.maximumHeight()
+ else:
+ self.__minSize = self.minimumWidth()
+ self.__maxSize = self.maximumWidth()
+ self.splitterSizes = self.splitter.sizes()
+
+ self.__stackedWidget.hide()
+
+ if self.__orientation in [E5SideBar.North, E5SideBar.South]:
+ self.setFixedHeight(self.__tabBar.minimumSizeHint().height())
+ else:
+ self.setFixedWidth(self.__tabBar.minimumSizeHint().width())
+
+ def expand(self):
+ """
+ Public method to expand the sidebar.
+ """
+ self.__minimized = False
+ self.__stackedWidget.show()
+ self.resize(self.__bigSize)
+ if self.__orientation in [E5SideBar.North, E5SideBar.South]:
+ self.setMinimumHeight(self.__minSize)
+ self.setMaximumHeight(self.__maxSize)
+ else:
+ self.setMinimumWidth(self.__minSize)
+ self.setMaximumWidth(self.__maxSize)
+ self.splitter.setSizes(self.splitterSizes)
+
+ def isMinimized(self):
+ """
+ Public method to check the minimized state.
+
+ @return flag indicating the minimized state (boolean)
+ """
+ return self.__minimized
+
+ def isAutoHiding(self):
+ """
+ Public method to check, if the auto hide function is active.
+
+ @return flag indicating the state of auto hiding (boolean)
+ """
+ return self.__autoHide
+
+ def eventFilter(self, obj, evt):
+ """
+ Protected method to handle some events for the tabbar.
+
+ @param obj reference to the object (QObject)
+ @param evt reference to the event object (QEvent)
+ @return flag indicating, if the event was handled (boolean)
+ """
+ if obj == self.__tabBar:
+ if evt.type() == QEvent.MouseButtonPress:
+ pos = evt.pos()
+ index = -1
+ for i in range(self.__tabBar.count()):
+ if self.__tabBar.tabRect(i).contains(pos):
+ index = i
+ break
+
+ if i == self.__tabBar.currentIndex():
+ if self.isMinimized():
+ self.expand()
+ else:
+ self.shrink()
+ return True
+ elif self.isMinimized():
+ self.expand()
+ elif evt.type() == QEvent.Wheel and not self.__stackedWidget.isHidden():
+ if evt.delta() > 0:
+ self.prevTab()
+ else:
+ self.nextTab()
+ return True
+
+ return QWidget.eventFilter(self, obj, evt)
+
+ def addTab(self, widget, iconOrLabel, label = None):
+ """
+ Public method to add a tab to the sidebar.
+
+ @param widget reference to the widget to add (QWidget)
+ @param iconOrLabel reference to the icon or the labeltext of the tab
+ (QIcon, string)
+ @param label the labeltext of the tab (string) (only to be
+ used, if the second parameter is a QIcon)
+ """
+ if label:
+ self.__tabBar.addTab(iconOrLabel, label)
+ else:
+ self.__tabBar.addTab(iconOrLabel)
+ self.__stackedWidget.addWidget(widget)
+
+ def insertTab(self, index, widget, iconOrLabel, label = None):
+ """
+ Public method to insert a tab into the sidebar.
+
+ @param index the index to insert the tab at (integer)
+ @param widget reference to the widget to insert (QWidget)
+ @param iconOrLabel reference to the icon or the labeltext of the tab
+ (QIcon, string)
+ @param label the labeltext of the tab (string) (only to be
+ used, if the second parameter is a QIcon)
+ """
+ if label:
+ self.__tabBar.insertTab(index, iconOrLabel, label)
+ else:
+ self.__tabBar.insertTab(index, iconOrLabel)
+ self.__stackedWidget.insertWidget(index, widget)
+
+ def removeTab(self, index):
+ """
+ Public method to remove a tab.
+
+ @param index the index of the tab to remove (integer)
+ """
+ self.__stackedWidget.removeWidget(self.__stackedWidget.widget(index))
+ self.__tabBar.removeTab(index)
+
+ def clear(self):
+ """
+ Public method to remove all tabs.
+ """
+ while self.count() > 0:
+ self.removeTab(0)
+
+ def prevTab(self):
+ """
+ Public slot used to show the previous tab.
+ """
+ ind = self.currentIndex() - 1
+ if ind == -1:
+ ind = self.count() - 1
+
+ self.setCurrentIndex(ind)
+ self.currentWidget().setFocus()
+
+ def nextTab(self):
+ """
+ Public slot used to show the next tab.
+ """
+ ind = self.currentIndex() + 1
+ if ind == self.count():
+ ind = 0
+
+ self.setCurrentIndex(ind)
+ self.currentWidget().setFocus()
+
+ def count(self):
+ """
+ Public method to get the number of tabs.
+
+ @return number of tabs in the sidebar (integer)
+ """
+ return self.__tabBar.count()
+
+ def currentIndex(self):
+ """
+ Public method to get the index of the current tab.
+
+ @return index of the current tab (integer)
+ """
+ return self.__stackedWidget.currentIndex()
+
+ def setCurrentIndex(self, index):
+ """
+ Public slot to set the current index.
+
+ @param index the index to set as the current index (integer)
+ """
+ self.__tabBar.setCurrentIndex(index)
+ self.__stackedWidget.setCurrentIndex(index)
+ if self.isMinimized():
+ self.expand()
+
+ def currentWidget(self):
+ """
+ Public method to get a reference to the current widget.
+
+ @return reference to the current widget (QWidget)
+ """
+ return self.__stackedWidget.currentWidget()
+
+ def setCurrentWidget(self, widget):
+ """
+ Public slot to set the current widget.
+
+ @param widget reference to the widget to become the current widget (QWidget)
+ """
+ self.__stackedWidget.setCurrentWidget(widget)
+ self.__tabBar.setCurrentIndex(self.__stackedWidget.currentIndex())
+ if self.isMinimized():
+ self.expand()
+
+ def indexOf(self, widget):
+ """
+ Public method to get the index of the given widget.
+
+ @param widget reference to the widget to get the index of (QWidget)
+ @return index of the given widget (integer)
+ """
+ return self.__stackedWidget.indexOf(widget)
+
+ def isTabEnabled(self, index):
+ """
+ Public method to check, if a tab is enabled.
+
+ @param index index of the tab to check (integer)
+ @return flag indicating the enabled state (boolean)
+ """
+ return self.__tabBar.isTabEnabled(index)
+
+ def setTabEnabled(self, index, enabled):
+ """
+ Public method to set the enabled state of a tab.
+
+ @param index index of the tab to set (integer)
+ @param enabled enabled state to set (boolean)
+ """
+ self.__tabBar.setTabEnabled(index, enabled)
+
+ def orientation(self):
+ """
+ Public method to get the orientation of the sidebar.
+
+ @return orientation of the sidebar (North, East, South, West)
+ """
+ return self.__orientation
+
+ def setOrientation(self, orient):
+ """
+ Public method to set the orientation of the sidebar.
+ @param orient orientation of the sidebar (North, East, South, West)
+ """
+ if orient == E5SideBar.North:
+ self.__tabBar.setShape(QTabBar.RoundedNorth)
+ self.barLayout.setDirection(QBoxLayout.LeftToRight)
+ self.layout.setDirection(QBoxLayout.TopToBottom)
+ self.layout.setAlignment(self.barLayout, Qt.AlignLeft)
+ elif orient == E5SideBar.East:
+ self.__tabBar.setShape(QTabBar.RoundedEast)
+ self.barLayout.setDirection(QBoxLayout.TopToBottom)
+ self.layout.setDirection(QBoxLayout.RightToLeft)
+ self.layout.setAlignment(self.barLayout, Qt.AlignTop)
+ elif orient == E5SideBar.South:
+ self.__tabBar.setShape(QTabBar.RoundedSouth)
+ self.barLayout.setDirection(QBoxLayout.LeftToRight)
+ self.layout.setDirection(QBoxLayout.BottomToTop)
+ self.layout.setAlignment(self.barLayout, Qt.AlignLeft)
+ elif orient == E5SideBar.West:
+ self.__tabBar.setShape(QTabBar.RoundedWest)
+ self.barLayout.setDirection(QBoxLayout.TopToBottom)
+ self.layout.setDirection(QBoxLayout.LeftToRight)
+ self.layout.setAlignment(self.barLayout, Qt.AlignTop)
+ self.__orientation = orient
+
+ def tabIcon(self, index):
+ """
+ Public method to get the icon of a tab.
+
+ @param index index of the tab (integer)
+ @return icon of the tab (QIcon)
+ """
+ return self.__tabBar.tabIcon(index)
+
+ def setTabIcon(self, index, icon):
+ """
+ Public method to set the icon of a tab.
+
+ @param index index of the tab (integer)
+ @param icon icon to be set (QIcon)
+ """
+ self.__tabBar.setTabIcon(index, icon)
+
+ def tabText(self, index):
+ """
+ Public method to get the text of a tab.
+
+ @param index index of the tab (integer)
+ @return text of the tab (string)
+ """
+ return self.__tabBar.tabText(index)
+
+ def setTabText(self, index, text):
+ """
+ Public method to set the text of a tab.
+
+ @param index index of the tab (integer)
+ @param text text to set (string)
+ """
+ self.__tabBar.setTabText(index, text)
+
+ def tabToolTip(self, index):
+ """
+ Public method to get the tooltip text of a tab.
+
+ @param index index of the tab (integer)
+ @return tooltip text of the tab (string)
+ """
+ return self.__tabBar.tabToolTip(index)
+
+ def setTabToolTip(self, index, tip):
+ """
+ Public method to set the tooltip text of a tab.
+
+ @param index index of the tab (integer)
+ @param tooltip text text to set (string)
+ """
+ self.__tabBar.setTabToolTip(index, tip)
+
+ def tabWhatsThis(self, index):
+ """
+ Public method to get the WhatsThis text of a tab.
+
+ @param index index of the tab (integer)
+ @return WhatsThis text of the tab (string)
+ """
+ return self.__tabBar.tabWhatsThis(index)
+
+ def setTabWhatsThis(self, index, text):
+ """
+ Public method to set the WhatsThis text of a tab.
+
+ @param index index of the tab (integer)
+ @param WhatsThis text text to set (string)
+ """
+ self.__tabBar.setTabWhatsThis(index, text)
+
+ def widget(self, index):
+ """
+ Public method to get a reference to the widget associated with a tab.
+
+ @param index index of the tab (integer)
+ @return reference to the widget (QWidget)
+ """
+ return self.__stackedWidget.widget(index)
+
+ def saveState(self):
+ """
+ Public method to save the state of the sidebar.
+
+ @return saved state as a byte array (QByteArray)
+ """
+ if len(self.splitterSizes) == 0:
+ self.splitterSizes = self.splitter.sizes()
+ self.__bigSize = self.size()
+ if self.__orientation in [E5SideBar.North, E5SideBar.South]:
+ self.__minSize = self.minimumHeight()
+ self.__maxSize = self.maximumHeight()
+ else:
+ self.__minSize = self.minimumWidth()
+ self.__maxSize = self.maximumWidth()
+
+ data = QByteArray()
+ stream = QDataStream(data, QIODevice.WriteOnly)
+
+ stream.writeUInt16(self.Version)
+ stream.writeBool(self.__minimized)
+ stream << self.__bigSize
+ stream.writeUInt16(self.__minSize)
+ stream.writeUInt16(self.__maxSize)
+ stream.writeUInt16(len(self.splitterSizes))
+ for size in self.splitterSizes:
+ stream.writeUInt16(size)
+ stream.writeBool(self.__autoHide)
+
+ return data
+
+ def restoreState(self, state):
+ """
+ Public method to restore the state of the sidebar.
+
+ @param state byte array containing the saved state (QByteArray)
+ @return flag indicating success (boolean)
+ """
+ if state.isEmpty():
+ return False
+
+ data = QByteArray(state)
+ stream = QDataStream(data, QIODevice.ReadOnly)
+ version = stream.readUInt16()
+ minimized = stream.readBool()
+
+ if minimized:
+ self.shrink()
+
+ stream >> self.__bigSize
+ self.__minSize = stream.readUInt16()
+ self.__maxSize = stream.readUInt16()
+ count = stream.readUInt16()
+ self.splitterSizes = []
+ for i in range(count):
+ self.splitterSizes.append(stream.readUInt16())
+
+ self.__autoHide = stream.readBool()
+ self.__autoHideButton.setChecked(not self.__autoHide)
+
+ if not minimized:
+ self.expand()
+
+ return True
+
+ #######################################################################
+ ## methods below implement the autohide functionality
+ #######################################################################
+
+ def __autoHideToggled(self, checked):
+ """
+ Private slot to handle the toggling of the autohide button.
+
+ @param checked flag indicating the checked state of the button (boolean)
+ """
+ self.__autoHide = not checked
+ if self.__autoHide:
+ self.__autoHideButton.setIcon(UI.PixmapCache.getIcon("autoHideOn"))
+ else:
+ self.__autoHideButton.setIcon(UI.PixmapCache.getIcon("autoHideOff"))
+
+ def __appFocusChanged(self, old, now):
+ """
+ Private slot to handle a change of the focus.
+
+ @param old reference to the widget, that lost focus (QWidget or None)
+ @param now reference to the widget having the focus (QWidget or None)
+ """
+ self.__hasFocus = self.isAncestorOf(now)
+ if self.__autoHide and not self.__hasFocus and not self.isMinimized():
+ self.shrink()
+ elif self.__autoHide and self.__hasFocus and self.isMinimized():
+ self.expand()
+
+ def enterEvent(self, event):
+ """
+ Protected method to handle the mouse entering this widget.
+
+ @param event reference to the event (QEvent)
+ """
+ if self.__autoHide and self.isMinimized():
+ self.expand()
+
+ def leaveEvent(self, event):
+ """
+ Protected method to handle the mouse leaving this widget.
+
+ @param event reference to the event (QEvent)
+ """
+ if self.__autoHide and not self.__hasFocus and not self.isMinimized():
+ self.shrink()
\ No newline at end of file
