python - 在拆分的 Widget PyQt Qt 中将 Tab 从 QtabBar 拖放到其他 QtabBar

Question

我如何存档:- 我需要将一个选项卡从其 tabBar 拖放到拆分小部件中的其他 tabBar？我已经将 QtabBar 子类化并实现了拖放事件，我已经可以用正确的像素图等拖动它，而且我还可以将它放到同一个 tabBar 中，但不能放在另一个 ..输出中出现此错误，告诉我我没有提供正确的参数，这是代码，我为制作它和示例进行了简化，并加上窗口的 .JPG。

class EsceneTest(qg.QMainWindow):
    def __init__(self,parent=getMayaWindow()):
        super(EsceneTest,self).__init__(parent)
        #---------------------------------------------------------#        
        #check for open Window first
        winName = windowTitle
        if cmds.window(winName, exists =1):
            cmds.deleteUI(winName, wnd=True)

        self.setAttribute(qc.Qt.WA_DeleteOnClose) 
        self._initUI()      

    def _initUI(self):                     
        self.setObjectName(windowObject)
        self.setWindowTitle(windowTitle)
        self.setMinimumWidth(450)
        self.setMinimumHeight(500)
        self.resize(1080, 800) # re-size the window
        centralWidget = qg.QWidget()
        centralWidget.setObjectName('centralWidget')
        self.setCentralWidget(centralWidget)
        central_layout = qg.QVBoxLayout(centralWidget)

        ######################
        # tab container
        #
        self.tabWidget = qg.QTabWidget()
        self.tabWidget.setAcceptDrops(True)
        self.tab_layout = qg.QVBoxLayout(self.tabWidget)
        central_layout.addWidget(self.tabWidget)

        #######################
        # TabBar
        #                 
        custom_tabbar = ColtabBar()
        self.tabWidget.setTabBar(custom_tabbar)        

        #######################
        # ViewportTab
        #         
        tabCentral_wdg = qg.QWidget()
        self.top_lyt = qg.QVBoxLayout(tabCentral_wdg)
        self.tab_layout.addLayout(self.top_lyt)       

        fixedHBox_lyt = qg.QHBoxLayout()
        self.top_lyt.addLayout(fixedHBox_lyt)   
        self.tabWidget.addTab(tabCentral_wdg,'- Viewport')

        #######################
        # Example ExtraTab
        #        
        tabTwo_wdg = qg.QWidget()
        tabTwo_wdg_lyt = qg.QHBoxLayout(tabTwo_wdg)
        self.tab_layout.addLayout(tabTwo_wdg_lyt)        
        label = qg.QLabel(' -- This is an example -- ')
        label.setStyleSheet("""
                            background : qlineargradient(x1:0, y1:0, x2:0, y2:1, stop:0 rgb(53, 57, 60), stop:1 rgb(33, 34, 36));
                            border-style : none;
                            font-size: 40px;
                            font-family: Calibri;
                            color : rgb(200,200,100);
                        """)
        label.setAlignment(qc.Qt.AlignVCenter | qc.Qt.AlignHCenter )
        tabTwo_wdg_lyt.addWidget(label)       
        tab_panel_lyt = qg.QVBoxLayout(label)    
        self.tabWidget.addTab(tabTwo_wdg,'- ExtraExample') 

        ############################
        #   Q Splitter Widget to insert the dragged Tabs
        #
        split = qg.QSplitter(qc.Qt.Orientation.Vertical, self)
        central_layout.addWidget(split)
        tab_splitted = qg.QTabWidget()
        split.setLayout(qg.QVBoxLayout())
        split.insertWidget(0,tab_splitted)
        tabBar_2 = ColtabBar()
        tab_splitted.setTabBar(tabBar_2)
        tabBar_2.addTab('- Insert-Here')
#---------------------------------------------------------------------------------------------#

class ColtabBar(qg.QTabBar):
    def __init__(self):
        super(ColtabBar, self).__init__()
        self.indexTab = None        
        self.setAcceptDrops(True)   

    ##################################
    # Events
    def mouseMoveEvent(self, e):
        if e.buttons() != qc.Qt.MiddleButton:
            return

        globalPos = self.mapToGlobal(e.pos())
        posInTab = self.mapFromGlobal(globalPos)
        self.indexTab = self.tabAt(e.pos())
        tabRect = self.tabRect(self.indexTab)


        pixmap = qg.QPixmap(tabRect.size())
        self.render(pixmap,qc.QPoint(),qg.QRegion(tabRect))
        mimeData = qc.QMimeData()
        drag = qg.QDrag(self)
        drag.setMimeData(mimeData)
        drag.setPixmap(pixmap)

        cursor = qg.QCursor(qc.Qt.OpenHandCursor)    
        drag.setHotSpot(e.pos() - posInTab)
        drag.setDragCursor(cursor.pixmap(),qc.Qt.MoveAction)       
        dropAction = drag.exec_(qc.Qt.MoveAction)


    def mousePressEvent(self, e):
        #super(qg.QWidget).mousePressEvent(e)
        if e.button() == qc.Qt.RightButton:
            print('press')

        if e.button() == qc.Qt.LeftButton:            
            globalPos = self.mapToGlobal(e.pos())
            posInTab = self.mapFromGlobal(globalPos)
            self.indexTab = self.tabAt(e.pos())
            self.setCurrentIndex(self.indexTab)

    def dragEnterEvent(self, e):
        e.accept()


    def dropEvent(self, e):
        e.setDropAction(qc.Qt.MoveAction)
        e.accept()        
        self.insertTab(self.indexTab, self.tabText(self.indexTab)) 
        self.removeTab(self.indexTab)

ColtabBar 是我执行拖放事件的子类。

图片->

Answer 1

几个小时后，今天在网上吃了很多页的 Qt，我用我的方式做到了，现在我可以将选项卡从一个选项卡栏拖放到另一个选项卡栏，反之亦然，而不仅仅是选择当前选项卡选项卡，我可以在我的选项卡栏中选择我想要的每个选项卡，并在拖动时显示小选项卡的像素图...

代码如下:

** 已编辑 **

我让它更加防弹，当我使用超过 2 个带有索引的选项卡时我有一个错误，现在工作得更好，当我把它放在同一个小部件中时它返回事件而不执行代码，加上悬停选项卡也可以用鼠标右键选择。我希望这对以后的任何人都有帮助。

TABINDEX = int()

def getTabIndex(index):
    global TABINDEX
    if index == -1 or index == TABINDEX:
        return
    TABINDEX = index
    print (TABINDEX)
    return TABINDEX


class ColtTab(qg.QTabWidget):
    def __init__(self):
        super(ColtTab,self).__init__()
        self.setAcceptDrops(True)
        self.tabBar = self.tabBar()
        self.tabBar.setMouseTracking(True)
        self.setDocumentMode(True)
        self.indexTab = int()
        self.setMovable(True)
        self.setStyleSheet(style_sheet_file)


    # test for hovering and selecting tabs automatic while mouser over then - not working for now...
    def eventFilter(self, obj, event):
        if obj == self.tabBar:
            if event.type() == qc.QEvent.MouseMove:
                index=self.tabBar.tabAt(event.pos())
                self.tabBar.setCurrentIndex (index)
                return True
            else:
                return
        else:
            return

    ##################################
    # Events
    #
    def mouseMoveEvent(self, e):
        if e.buttons() != qc.Qt.MiddleButton:
            return

        globalPos = self.mapToGlobal(e.pos())
        #print(globalPos)
        tabBar = self.tabBar
        #print(tabBar)
        posInTab = tabBar.mapFromGlobal(globalPos)
        #print(posInTab)
        self.indexTab = tabBar.tabAt(e.pos())
        #print(self.indexTab)
        tabRect = tabBar.tabRect(self.indexTab)
        #print(tabRect)
        #print(tabRect.size())

        pixmap = qg.QPixmap(tabRect.size())
        tabBar.render(pixmap,qc.QPoint(),qg.QRegion(tabRect))
        mimeData = qc.QMimeData()
        drag = qg.QDrag(tabBar)
        drag.setMimeData(mimeData)
        drag.setPixmap(pixmap)
        cursor = qg.QCursor(qc.Qt.OpenHandCursor)
        drag.setHotSpot(e.pos() - posInTab)
        drag.setDragCursor(cursor.pixmap(),qc.Qt.MoveAction)
        dropAction = drag.exec_(qc.Qt.MoveAction)


    def mousePressEvent(self, e):
        if e.button() == qc.Qt.RightButton:
            self.tabBar.installEventFilter(self)
            print('Right button pressed')

        super(ColtTab, self).mousePressEvent(e)


    def dragEnterEvent(self, e):
        e.accept()
        if e.source().parentWidget() != self:
            return

        # Helper function for retrieving the Tab index into a global Var
        getTabIndex(self.indexOf(self.widget(self.indexTab)))


    def dragLeaveEvent(self,e):
        e.accept()


    def dropEvent(self, e):
        if e.source().parentWidget() == self:
            return

        e.setDropAction(qc.Qt.MoveAction)
        e.accept()
        counter = self.count()

        if counter == 0:
            self.addTab(e.source().parentWidget().widget(TABINDEX),e.source().tabText(TABINDEX))
        else:
            self.insertTab(counter + 1 ,e.source().parentWidget().widget(TABINDEX),e.source().tabText(TABINDEX))

        print ('Tab dropped')

    def mouseReleaseEvent(self, e):
        if e.button() == qc.Qt.RightButton:
            print('Right button released')
            self.tabBar.removeEventFilter(self)

        super(ColtTab, self).mouseReleaseEvent(e)


    #---------------------------------------------------------------------------------#

图片->