CODEWITHSUNDEEP
pythonpyqt
alphanumeric
alphanumeric

Reputation: 19369

How to select QTreeWidgetItem by clicking its item-widget

This code creates QTreeWidget with QComboBox and QLineEdit set as the item widgets. If to follow these steps:

  1. Right after this dialog opens...

  2. Click the item (not its item-widget). Item's background color turns blue.

  3. Now click any item-widget of another item (Combobox or LineEdit).

The item the combobox is assigned to as the item-widget gets selected (turns blue). Any other attempts to select the item by clicking its item-widget fail. You would have to close dialog and re-open it again. Since this happens only once.

Is it possible to make this feature persistent... so every time an item-widget is clicked the item holding it gets selected as well making a full impression the item and its item-widgets is the same thing. As it acts by default I have to click the item itself to make it selected.

enter image description here

    from PyQt4 import QtCore, QtGui
    app = QtGui.QApplication([])

    class Tree(QtGui.QTreeWidget):
        def __init__(self, *args, **kwargs):
            super(Tree, self).__init__()
            for each in ['Item_1','Item_2','Item_3','Item_4','Item_5']:
                item=QtGui.QTreeWidgetItem()
                item.setText(0, each)
                self.addTopLevelItem(item)
                self.setItemWidget(item, 1, QtGui.QComboBox())
                self.setItemWidget(item, 2, QtGui.QLineEdit())
            self.setColumnCount(5)
            self.resize(360,240)
            self.show()

    tree=Tree()
    sys.exit(app.exec_())

Upvotes: 1

Views: 2415

Answers (1)

Bandhit Suksiri
Bandhit Suksiri

Reputation: 3460

Use have to use mousePressEvent (again) to implemented when item in widget has Press;

.
.
.
comboBox = QtGui.QComboBox()
lineEdit = QtGui.QLineEdit()
self.setItemWidget(item, 1, comboBox)
self.setItemWidget(item, 2, lineEdit)
# Set new event
comboBox.mousePressEvent = partial(self.mousePressEventChild, currentQTreeWidgetItem = item, child = comboBox)
lineEdit.mousePressEvent = partial(self.mousePressEventChild, currentQTreeWidgetItem = item, child = lineEdit)
.
.
.

def mousePressEventChild (self, QMouseEvent, currentQTreeWidgetItem = None, child = None):
    if isinstance(currentQTreeWidgetItem, QtGui.QTreeWidgetItem): # <- Check this widget has QTreeWidgetItem.
        self.setCurrentItem(currentQTreeWidgetItem) # <- set current index by QTreeWidgetItem.
    super(child.__class__, child).mousePressEvent(QMouseEvent) # <- Default old mouse press event.

Full example code;

import sys
from functools import partial
from PyQt4 import QtCore, QtGui

class Tree(QtGui.QTreeWidget):
    def __init__(self, *args, **kwargs):
        super(Tree, self).__init__()
        for each in ['Item_1','Item_2','Item_3','Item_4','Item_5']:
            item=QtGui.QTreeWidgetItem([each])
            self.addTopLevelItem(item)
            comboBox = QtGui.QComboBox()
            lineEdit = QtGui.QLineEdit()
            self.setItemWidget(item, 1, comboBox)
            self.setItemWidget(item, 2, lineEdit)
            comboBox.mousePressEvent = partial(self.mousePressEventChild, currentQTreeWidgetItem = item, child = comboBox)
            lineEdit.mousePressEvent = partial(self.mousePressEventChild, currentQTreeWidgetItem = item, child = lineEdit)
        self.setColumnCount(5)
        self.resize(360,240)
        self.show()

    def mousePressEventChild (self, QMouseEvent, currentQTreeWidgetItem = None, child = None):
        if isinstance(currentQTreeWidgetItem, QtGui.QTreeWidgetItem):
            self.setCurrentItem(currentQTreeWidgetItem)
        super(child.__class__, child).mousePressEvent(QMouseEvent)

app = QtGui.QApplication([])
tree=Tree()
sys.exit(app.exec_())

Click event Reference : http://pyqt.sourceforge.net/Docs/PyQt4/qwidget.html#mousePressEvent

Regards,

Upvotes: 2

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