--- a/E4Gui/E4TabWidget.py Tue Jan 12 18:39:15 2010 +0000
+++ /dev/null Thu Jan 01 00:00:00 1970 +0000
@@ -1,322 +0,0 @@
-# -*- coding: utf-8 -*-
-
-# Copyright (c) 2005 - 2010 Detlev Offenbach <detlev@die-offenbachs.de>
-#
-
-"""
-Module implementing a TabWidget class substituting QTabWidget.
-"""
-
-from PyQt4.QtGui import QTabWidget, QTabBar, QApplication, QDrag, QStyle, QLabel, QMovie
-from PyQt4.QtCore import Qt, SIGNAL, QPoint, QMimeData, QByteArray
-
-class E4WheelTabBar(QTabBar):
- """
- Class implementing a tab bar class substituting QTabBar to support wheel events.
- """
- def __init__(self, parent = None):
- """
- Constructor
-
- @param parent reference to the parent widget (QWidget)
- """
- QTabBar.__init__(self, parent)
- self._tabWidget = parent
-
- def wheelEvent(self, event):
- """
- Protected slot to support wheel events.
-
- @param reference to the wheel event (QWheelEvent)
- """
- try:
- if event.delta() > 0:
- self._tabWidget.prevTab()
- else:
- self._tabWidget.nextTab()
-
- event.accept()
- except AttributeError:
- pass
-
-class E4DnDTabBar(E4WheelTabBar):
- """
- Class implementing a tab bar class substituting QTabBar.
-
- @signal tabMoveRequested(int, int) emitted to signal a tab move request giving
- the old and new index position
- """
- def __init__(self, parent = None):
- """
- Constructor
-
- @param parent reference to the parent widget (QWidget)
- """
- E4WheelTabBar.__init__(self, parent)
- self.setAcceptDrops(True)
-
- self.__dragStartPos = QPoint()
-
- def mousePressEvent(self, event):
- """
- Protected method to handle mouse press events.
-
- @param event reference to the mouse press event (QMouseEvent)
- """
- if event.button() == Qt.LeftButton:
- self.__dragStartPos = QPoint(event.pos())
- E4WheelTabBar.mousePressEvent(self, event)
-
- def mouseMoveEvent(self, event):
- """
- Protected method to handle mouse move events.
-
- @param event reference to the mouse move event (QMouseEvent)
- """
- if event.buttons() == Qt.MouseButtons(Qt.LeftButton) and \
- (event.pos() - self.__dragStartPos).manhattanLength() > \
- QApplication.startDragDistance():
- drag = QDrag(self)
- mimeData = QMimeData()
- index = self.tabAt(event.pos())
- mimeData.setText(self.tabText(index))
- mimeData.setData("action", "tab-reordering")
- mimeData.setData("tabbar-id", QByteArray.number(id(self)))
- drag.setMimeData(mimeData)
- drag.exec_()
- E4WheelTabBar.mouseMoveEvent(self, event)
-
- def dragEnterEvent(self, event):
- """
- Protected method to handle drag enter events.
-
- @param event reference to the drag enter event (QDragEnterEvent)
- """
- mimeData = event.mimeData()
- formats = mimeData.formats()
- if "action" in formats and \
- mimeData.data("action") == "tab-reordering" and \
- "tabbar-id" in formats and \
- mimeData.data("tabbar-id") == id(self):
- event.acceptProposedAction()
- E4WheelTabBar.dragEnterEvent(self, event)
-
- def dropEvent(self, event):
- """
- Protected method to handle drop events.
-
- @param event reference to the drop event (QDropEvent)
- """
- fromIndex = self.tabAt(self.__dragStartPos)
- toIndex = self.tabAt(event.pos())
- if fromIndex != toIndex:
- self.emit(SIGNAL("tabMoveRequested(int, int)"), fromIndex, toIndex)
- event.acceptProposedAction()
- E4WheelTabBar.dropEvent(self, event)
-
-class E4TabWidget(QTabWidget):
- """
- Class implementing a tab widget class substituting QTabWidget.
-
- It provides slots to show the previous and next tab and give
- them the input focus and it allows to have a context menu for the tabs.
-
- @signal customTabContextMenuRequested(const QPoint & point, int index) emitted when
- a context menu for a tab is requested
- """
- def __init__(self, parent = None, dnd = False):
- """
- Constructor
-
- @param parent reference to the parent widget (QWidget)
- @keyparam dnd flag indicating the support for Drag & Drop (boolean)
- """
- QTabWidget.__init__(self, parent)
-
- if dnd:
- if not hasattr(self, 'setMovable'):
- self.__tabBar = E4DnDTabBar(self)
- self.connect(self.__tabBar, SIGNAL("tabMoveRequested(int, int)"),
- self.moveTab)
- self.setTabBar(self.__tabBar)
- else:
- self.__tabBar = E4WheelTabBar(self)
- self.setTabBar(self.__tabBar)
- self.setMovable(True)
- else:
- self.__tabBar = E4WheelTabBar(self)
- self.setTabBar(self.__tabBar)
-
- self.__lastCurrentIndex = -1
- self.__currentIndex = -1
- self.connect(self, SIGNAL("currentChanged(int)"), self.__currentChanged)
-
- def __currentChanged(self, index):
- """
- Private slot to handle the currentChanged signal.
-
- @param index index of the current tab
- """
- if index == -1:
- self.__lastCurrentIndex = -1
- else:
- self.__lastCurrentIndex = self.__currentIndex
- self.__currentIndex = index
-
- def switchTab(self):
- """
- Public slot used to switch between the current and the previous current tab.
- """
- if self.__lastCurrentIndex == -1 or self.__currentIndex == -1:
- return
-
- self.setCurrentIndex(self.__lastCurrentIndex)
- 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 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 setTabContextMenuPolicy(self, policy):
- """
- Public method to set the context menu policy of the tab.
-
- @param policy context menu policy to set (Qt.ContextMenuPolicy)
- """
- self.tabBar().setContextMenuPolicy(policy)
- if policy == Qt.CustomContextMenu:
- self.connect(self.tabBar(),
- SIGNAL("customContextMenuRequested(const QPoint &)"),
- self.__handleTabCustomContextMenuRequested)
- else:
- self.disconnect(self.tabBar(),
- SIGNAL("customContextMenuRequested(const QPoint &)"),
- self.__handleTabCustomContextMenuRequested)
-
- def __handleTabCustomContextMenuRequested(self, point):
- """
- Private slot to handle the context menu request for the tabbar.
-
- @param point point the context menu was requested (QPoint)
- """
- _tabbar = self.tabBar()
- for index in range(_tabbar.count()):
- rect = _tabbar.tabRect(index)
- if rect.contains(point):
- self.emit(SIGNAL("customTabContextMenuRequested(const QPoint &, int)"),
- _tabbar.mapToParent(point), index)
- break
-
- def selectTab(self, pos):
- """
- Public method to get the index of a tab given a position.
-
- @param pos position determining the tab index (QPoint)
- @return index of the tab (integer)
- """
- _tabbar = self.tabBar()
- for index in range(_tabbar.count()):
- rect = _tabbar.tabRect(index)
- if rect.contains(pos):
- return index
-
- return -1
-
- def moveTab(self, curIndex, newIndex):
- """
- Public method to move a tab to a new index.
-
- @param curIndex index of tab to be moved (integer)
- @param newIndex index the tab should be moved to (integer)
- """
- # step 1: save the tab data of tab to be moved
- toolTip = self.tabToolTip(curIndex)
- text = self.tabText(curIndex)
- icon = self.tabIcon(curIndex)
- whatsThis = self.tabWhatsThis(curIndex)
- widget = self.widget(curIndex)
- curWidget = self.currentWidget()
-
- # step 2: move the tab
- self.removeTab(curIndex)
- self.insertTab(newIndex, widget, icon, text)
-
- # step 3: set the tab data again
- self.setTabToolTip(newIndex, toolTip)
- self.setTabWhatsThis(newIndex, whatsThis)
-
- # step 4: set current widget
- self.setCurrentWidget(curWidget)
-
- def __freeSide(self):
- """
- Private method to determine the free side of a tab.
-
- @return free side (QTabBar.ButtonPosition)
- """
- side = self.__tabBar.style().styleHint(QStyle.SH_TabBar_CloseButtonPosition)
- if side == QTabBar.LeftSide:
- side = QTabBar.RightSide
- else:
- side = QTabBar.LeftSide
- return side
-
- def animationLabel(self, index, animationFile):
- """
- Public slot to set an animated icon.
-
- @param index tab index (integer)
- @param animationFile name of the file containing the animation (string)
- @return reference to the created label (QLabel)
- """
- if index == -1:
- return None
-
- if hasattr(self.__tabBar, 'setTabButton'):
- side = self.__freeSide()
- animation = QLabel(self)
- if animationFile and not animation.movie():
- movie = QMovie(animationFile, QByteArray(), animation)
- movie.setSpeed(50)
- animation.setMovie(movie)
- movie.start()
- self.__tabBar.setTabButton(index, side, None)
- self.__tabBar.setTabButton(index, side, animation)
- return animation
- else:
- return None
-
- def resetAnimation(self, index):
- """
- Public slot to reset an animated icon.
-
- @param index tab index (integer)
- """
- if index == -1:
- return None
-
- if hasattr(self.__tabBar, 'tabButton'):
- side = self.__freeSide()
- animation = self.__tabBar.tabButton(index, side)
- if animation is not None:
- animation.movie().stop()
- self.__tabBar.setTabButton(index, side, None)
- del animation
