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获取qtreeWidget的当前选定单元格

pyside2 qtreewidget python

0

Peter · 技术社区 · 7 年前

我想修改 qtreeWidget 以使选中的单元格在按Enter键时可编辑,但保持选择为整行。

我已经完成了一个简单的实现,找出最后一次点击的位置并保存该值,然后将这些值发送到按键上的my edit_item function(也用于 itemDoubleClicked signal)。不过,这并不好,我想知道是否有一种更简单的方法可以做到。

对于记录,单击一个项目仍然会选择整行。默认情况下,它可能是隐藏的行为,但在玛雅,有一个可见的选择对象,是在按住鼠标按钮时移动的最后一个单元格。如果我能以某种方式访问它,我还可以添加行为来用箭头键控制它。

这是所选单元格的示例:


   
    
     
      
       
      
     
     
      这是迄今为止我的代码:
     
     class qtreewidget(qtwidgets.qtreewidget):

返回按下=qtcore.signal(qtreeWidget,int)

定义初始化(self,*args,**kwargs):
qtwidgets.qtreewidget.\uu init\uuuuu(self,*args,**kwargs)

def keypressevent(self,事件):
如果event.key()==qtcore.qt.key_返回:
self.returnPressed.emit(self.\u selected\项目,self.\u selected\列)
其他:
qtwidgets.qtreewidget.keypressevent(self,event)

定义鼠标位置计算(自我,x位置):
“查找当前选定的列。”
尝试:
item=self.selecteditems()[0]
除了索引错误:
项目=无

header=self.header()。
总宽度=0
对于范围内的i(self.columncount()):
总宽度+=标题。节大小(I)
如果总宽度大于x位置:
返回(项,i)

def mousepressevent(self,事件):
qtWidgets.qtreeWidget.mousePressEvent(self,event)
self._selected_item,self._selected_column=self._mouse_pos_calculate(event.pos().x())

def mousereleaseevent(self,事件):
qtWidgets.qtreeWidget.mouseReleaseEvent(self,event)
self._selected_item,self._selected_column=self._mouse_pos_calculate(event.pos().x())
< /代码> 

编辑:由于Eyllanesc改进了功能

class qtreewidget(qtwidgets.qtreewidget):
“按回车键时添加编辑单元格的功能。”
itemedit=qtcore.signal(qtwidgets.qtreewidgetitem,int)

定义初始化(self,*args,**kwargs):
qtwidgets.qtreewidget.\uu init\uuuuu(self,*args,**kwargs)

self.\u last\u item=无
self.\u最后一列=0
self.itemDoubleClicked.connect(self._编辑_item_拦截)

def _edit_item_intercept(self,item=none,column=none):


edit_itemitemDoubleClicked









class QTreeWidget(QtWidgets.QTreeWidget):

    returnPressed = QtCore.Signal(QTreeWidget, int)

    def __init__(self,  *args, **kwargs):
        QtWidgets.QTreeWidget.__init__(self, *args, **kwargs)

    def keyPressEvent(self, event):
        if event.key() == QtCore.Qt.Key_Return:
            self.returnPressed.emit(self._selected_item, self._selected_column)
        else:
            QtWidgets.QTreeWidget.keyPressEvent(self, event)

    def _mouse_pos_calculate(self, x_pos):
        """Find the currently selected column."""
        try:
            item = self.selectedItems()[0]
        except IndexError:
            item = None

        header = self.header()
        total_width = 0
        for i in range(self.columnCount()):
            total_width += header.sectionSize(i)
            if total_width > x_pos:
                return (item, i)

    def mousePressEvent(self, event):
        QtWidgets.QTreeWidget.mousePressEvent(self, event)
        self._selected_item, self._selected_column = self._mouse_pos_calculate(event.pos().x())

    def mouseReleaseEvent(self, event):
        QtWidgets.QTreeWidget.mouseReleaseEvent(self, event)
        self._selected_item, self._selected_column = self._mouse_pos_calculate(event.pos().x())




class QTreeWidget(QtWidgets.QTreeWidget):
    """Add ability to edit cells when pressing return."""
    itemEdit = QtCore.Signal(QtWidgets.QTreeWidgetItem, int)

    def __init__(self,  *args, **kwargs):
        QtWidgets.QTreeWidget.__init__(self, *args, **kwargs)

        self._last_item = None
        self._last_column = 0
        self.itemDoubleClicked.connect(self._edit_item_intercept)

    def _edit_item_intercept(self, item=None, column=None):
        if item is None:
            item = self._last_item
        if column is None:
            column = self._last_column
        self.itemEdit.emit(item, column)

    def _store_last_cell(self, pos):
        selected_item = self.itemAt(pos)
        if selected_item is None:
            return
        self._last_item = selected_item
        self._last_column = self.header().logicalIndexAt(pos.x())

    def keyPressEvent(self, event):
        if event.key() == QtCore.Qt.Key_Return:
            return self._edit_item_intercept()
        QtWidgets.QTreeWidget.keyPressEvent(self, event)

    def mouseMoveEvent(self, event):
        QtWidgets.QTreeWidget.mouseMoveEvent(self, event)
        self._store_last_cell(event.pos())

1 回复 | 直到 7 年前

1

eyllanesc 7 年前

你做了很多不必要的计算,在下一部分我将展示一个更清晰的解决方案:

from PySide2 import QtCore, QtGui, QtWidgets


class QTreeWidget(QtWidgets.QTreeWidget):
    def __init__(self, *args, **kwargs):
        super(TreeWidget, self).__init__(*args, **kwargs)
        self.special_item = None
        self.special_col = 0

    def keyPressEvent(self, event):
        if event.key() == QtCore.Qt.Key_Return:
            self.editItem(self.special_item, self.special_col)
        QtWidgets.QTreeWidget.keyPressEvent(self, event)

    def editEnable(self, pos):
        press_item = self.itemAt(pos)
        if press_item is None:
            return
        if press_item is self.selectedItems()[0]:
            col = self.header().logicalIndexAt(pos.x())
            self.special_item = press_item
            self.special_col = col

    def mousePressEvent(self, event):
        QtWidgets.QTreeWidget.mousePressEvent(self, event)
        self.editEnable(event.pos())