I have searched online but have been unable to find a solution this problem. I have three (although this can be any number) QTableView objects that are all longer than the size they are displaying (they are also equal length). For all 3 I have a scroll bar automatically generated. I would like clicking on any one of these to move the other QTableView objects by the same amount.
Unfortunately I was unable to find a solution for this online. The closest I got was this (https://forum.qt.io/topic/25139/solved-synchronizing-two-qtableview-s-scrollbars/3) although this did not help my situation.
Any help on this question would be much appreciated! Thanks!
Here's a MCVE of three QTableView widgets with their vertical scrollbars linked. We connect the move_other_scrollbars() custom method to the QAbstractSlider.valueChanged signal of each scrollbar, using lambdas to pass the appropriate information: the idx of the scrollbars and the scrollbar that's been moved by the user). In turn, move_other_scrollbars() finds all the other scrollbars and updates their position with QAbstractSlider.setValue(idx).
from PyQt5.QtCore import (Qt, QStringListModel)
from PyQt5.QtWidgets import (QApplication, QWidget, QTableView, QHBoxLayout)
class MainWindow(QWidget):
def __init__(self, parent=None):
super(MainWindow, self).__init__(parent)
self.table_view_1 = QTableView()
self.table_view_2 = QTableView()
self.table_view_3 = QTableView()
items = ['apples', 'bananas', 'cookies', 'drinks', 'eggs', 'flour', 'gatorade']
items_2 = ['alligator', 'bear', 'cat', 'deer', 'elephant', 'flamingo', 'goose']
items_3 = ['Arsenic', 'Boron', 'Carbon', 'Dysprosium', 'Europium', 'Flourine', 'Gold']
self.model = QStringListModel(items)
self.model_2 = QStringListModel(items_2)
self.model_3 = QStringListModel(items_3)
self.table_view_1.setModel(self.model)
self.table_view_2.setModel(self.model)
self.table_view_3.setModel(self.model_3)
self.layout = QHBoxLayout()
self.list_of_tables = [self.table_view_1,self.table_view_2, self.table_view_3]
def move_other_scrollbars(idx,bar):
scrollbars = {tbl.verticalScrollBar() for tbl in self.list_of_tables}
scrollbars.remove(bar)
for bar in scrollbars:
bar.setValue(idx)
for tbl in self.list_of_tables:
scrollbar = tbl.verticalScrollBar()
scrollbar.valueChanged.connect(lambda idx,bar=scrollbar: move_other_scrollbars(idx, bar))
self.layout.addWidget(tbl)
self.setLayout(self.layout)
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
window = MainWindow()
window.show()
sys.exit(app.exec_())
QTableView have two ScrollBar : verticalScrollBar ,horizontalScrollBar.
you can get this object with verticalScrollBar () ,horizontalScrollBar(), the scroll bar object have valueChanged single this signal is emit when the scroll bar change position.
this code is a simple solution.
from PyQt5.QtCore import QStringListModel
from PyQt5.QtWidgets import QApplication, QMainWindow , QTableView, QVBoxLayout,QWidget
class window(QMainWindow):
def __init__(self):
super().__init__()
self.tab1 = QTableView(self)
self.tab2 = QTableView(self)
model1=QStringListModel([str(val) for val in range(0,100)])
model2=QStringListModel([str(val) for val in range(100,200)])
self.tab1.setModel(model1)
self.tab2.setModel(model2)
self.lyout = QVBoxLayout(self)
self.lyout.addWidget(self.tab1)
self.lyout.addWidget(self.tab2)
wid = QWidget(self)
self.setCentralWidget(wid)
wid.setLayout(self.lyout)
# connect the scroll bar signal to our slot
self.tab1.verticalScrollBar().valueChanged.connect(self.__chnge_position)
self.tab2.verticalScrollBar().valueChanged.connect(self.__chnge_position)
def __chnge_position(self,index):
# slot to change the scroll bar position of all tables
self.tab1.verticalScrollBar().setValue(index)
self.tab2.verticalScrollBar().setValue(index)
if __name__ == '__main__':
import sys
app = QApplication(sys.argv)
win = window()
win.show()
sys.exit(app.exec_())
Related
I am new to PyQt.
I have a QLineEdit and a QTableView in my window.
My requirements:
Whenever I type something in QLineEdit, the table has to show filtered results according to what I typed.
I want to add a QPushButton at last column of QTableView.
I have successfully implemented these requirements individually. But I am not able to add these two requirements simultaniously.
Here's my code:
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
from PyQt5.QtGui import *
import sys
class Application(QMainWindow):
def __init__(self):
super().__init__()
self.setGeometry(0,0,700,200)
self.initUI()
def initUI(self):
self.mainLayout = QVBoxLayout()
self.searchBar = QLineEdit()
self.table = QTableView()
self.mainLayout.addWidget(self.searchBar)
self.mainLayout.addWidget(self.table)
self.modelOfTable = QStandardItemModel()
self.modelOfTable.setHorizontalHeaderLabels(['ID', 'Date', 'Description', 'Cause', 'Category', 'Button'])
self.table.setModel(self.modelOfTable)
self.modelOfTable.appendRow([QStandardItem(str(i)) for i in range(5)])
self.modelOfTable.appendRow([QStandardItem(str(i)) for i in range(4,9)])
self.modelOfTable.appendRow([QStandardItem(str(i)) for i in range(7,12)])
for i in range(3):
self.table.setIndexWidget(self.modelOfTable.index(i, 5), QPushButton("button"))
filter_proxy_model = QSortFilterProxyModel()
filter_proxy_model.setSourceModel(self.modelOfTable)
filter_proxy_model.setFilterKeyColumn(-1)
self.searchBar.textChanged.connect(filter_proxy_model.setFilterRegExp)
self.table.setModel(self.modelOfTable)
main_widget = QWidget()
main_widget.setLayout(self.mainLayout)
self.setCentralWidget(main_widget)
# Setting the window to be in maximised mode
#self.showMaximized()
if __name__ == '__main__':
app = QApplication(sys.argv)
ex = Application()
ex.show()
sys.exit(app.exec_())
All the problem is in self.table.setModel line.
If I write self.table.setModel(self.modelOfTable) in that line, Pushbutton is placed in last column but filter is not working.
If I write self.table.setModel(self.modelOfTable) in that line, filter is working but there is no pushbutton in last column.
How can I add both two requirements at a time?
I try to extend the contextmenu of a QLineEdit with an additional entry for replacing text. I can extend the contextmenu with .createStandardContextMenu(), which works fine. But when I try to add a shortcut with .setShortcut(QKeySequence(Qt.CTRL + Qt.Key_R)) it will not react on the key. Same with different keys, which I tried. In addition the shortcut made with QAction('&Replace', self) doesn't work too.
Some examples here in SO and other sources are constructed in the same way, so I'm wondering that nobody else has got the same problem. Seems that I'm missing anything. But what? I can't figure out, checked the docs multiple times.
Working Example:
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
import sys
class ECM(QWidget):
def __init__(self):
super(ECM, self).__init__()
self.setWindowTitle("Extended Context Menu")
self.lineEdit = QLineEdit()
self.lineEdit.setContextMenuPolicy(Qt.CustomContextMenu)
self.lineEdit.customContextMenuRequested.connect(self.my_contextMenuEvent)
layout = QVBoxLayout()
layout.addWidget(self.lineEdit)
self.setLayout(layout)
self.setFixedSize(800,200)
self.show()
def replace(self):
print("replace")
def my_contextMenuEvent(self):
print("my_contextMenuEvent")
menu = self.lineEdit.createStandardContextMenu()
action = QAction('&Replace', self)
action.setStatusTip('Replace values')
action.setShortcut(QKeySequence(Qt.CTRL + Qt.Key_R))
action.triggered.connect(self.replace)
menu.addAction(action)
menu.exec_()
if __name__ == '__main__':
app = QApplication(sys.argv)
sender = ECM()
app.exec_()
Based on musicamante's comment I came to the following solution:
Extract from the docs:
If you want to extend the standard context menu, reimplement this
function, call createStandardContextMenu() and extend the menu
returned.
The default use of the QAction list (as returned by actions()) is to
create a context QMenu.
It's not totally logically to me, not for the 1st time ;-)
Final code:
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
from PyQt5.QtCore import *
import sys
class ECM(QWidget):
def __init__(self):
super(ECM, self).__init__()
self.setWindowTitle("Extended Context Menu")
self.lineEdit = QLineEdit()
self.lineEdit.setContextMenuPolicy(Qt.CustomContextMenu)
self.lineEdit.customContextMenuRequested.connect(self.my_contextMenuEvent)
layout = QVBoxLayout()
layout.addWidget(self.lineEdit)
self.setLayout(layout)
self.setFixedSize(800,200)
action = QAction('&Replace', self)
action.setStatusTip('Replace values')
action.setShortcut(QKeySequence(Qt.CTRL + Qt.Key_R))
action.triggered.connect(self.replace)
self.lineEdit.addAction(action)
self.show()
def replace(self):
print("replace")
def my_contextMenuEvent(self):
menu = self.lineEdit.createStandardContextMenu()
menu.addActions(self.lineEdit.actions())
menu.exec_()
if __name__ == '__main__':
app = QApplication(sys.argv)
sender = ECM()
app.exec_()
I have a basic GUI window, created with pyqt5 package, that contain a button that once clicked opens a map window thanks to Python's pyqtlet package.
My program does open the map window on first click, but here my issue:
If I close the map window and click again on the button it only show me a white window.
SOURCE CODE
import sys
from PyQt5.QtWidgets import QApplication, QWidget, QPushButton, QGridLayout
from PyQt5.QtCore import Qt
from pyqtlet import L, MapWidget
class MainWindow(QWidget):
def __init__(self):
super().__init__()
# set window title
self.setWindowTitle('Windowtitle')
# set layout
self.layout = QGridLayout()
self.layout.setAlignment(Qt.AlignCenter)
# create button to show the map
self.show_map_button = QPushButton('Show Map')
self.show_map_button.clicked.connect(self.show_map)
# add button to layout
self.layout.addWidget(self.show_map_button, 0, 1)
# show layout
self.setLayout(self.layout)
self.my_map = None
def show_map(self):
# create map window instance
self.my_map = MapWindow()
class MapWindow(QWidget):
def __init__(self):
# Setting up the widgets and layout
super().__init__()
self.mapWidget = MapWidget()
self.layout = QGridLayout()
self.layout.addWidget(self.mapWidget)
self.setLayout(self.layout)
# Working with the maps with pyqtlet
self.map = L.map(self.mapWidget)
self.map.setView([12.97, 77.59], 10)
L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png').addTo(self.map)
self.marker = L.marker([12.934056, 77.610029])
self.marker.bindPopup('Maps are a treasure.')
self.map.addLayer(self.marker)
self.show()
if __name__ == "__main__":
app = QApplication(sys.argv)
window = MainWindow()
window.show()
sys.exit(app.exec_())
I click the button for the first time (works as expected):
The second time I click it doesn't work as expected:
Please, can you help me find out where the issue is?
You are not trying to reopen the window but you are creating a new window but pyqtleft only allows you to register a "map" object. So if you want to reopen the window after the user closed it then check that if the object exists then just use the show method:
def show_map(self):
if self.my_map is None:
# create map window instance
self.my_map = MapWindow()
else:
self.my_map.show()
I am implement my project using pyqt5. Currently, I have a window including many widget. Now, I want to remove some widgets. The window looks like:
Now, I want to remove the 'name1' widget including the QLabel and QPushButton.
However, after removing all 'name1' widgets, the 'name2' widgets including QLabel and QPushButton can not self-adapte with the window, like:
All my code is:
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
import sys
class Window(QDialog):
def __init__(self):
super().__init__()
self.initGUI()
self.show()
def initGUI(self):
layout = QVBoxLayout()
self.setLayout(layout)
removeLayout = QHBoxLayout()
self.__removeText = QLineEdit()
self.__removeBtn = QPushButton('Remove')
self.__removeBtn.clicked.connect(self.remove)
removeLayout.addWidget(self.__removeText)
removeLayout.addWidget(self.__removeBtn)
ROIsLayout = QVBoxLayout()
for name in ['name1', 'name2']:
subLayout = QHBoxLayout()
subText = QLabel(name)
subText.setObjectName(name)
subBtn = QPushButton(name)
subBtn.setObjectName(name)
subLayout.addWidget(subText)
subLayout.addWidget(subBtn)
ROIsLayout.addLayout(subLayout)
layout.addLayout(removeLayout)
layout.addLayout(ROIsLayout)
self.__ROIsLayout = ROIsLayout
def remove(self, checked=False):
name = self.__removeText.text()
while True:
child = self.__ROIsLayout.takeAt(0)
if child == None:
break
while True:
subChild = child.takeAt(0)
if subChild == None:
break
obName = subChild.widget().objectName()
if name == obName:
widget = subChild.widget()
widget.setParent(None)
child.removeWidget(widget)
self.__ROIsLayout.removeWidget(widget)
del widget
if __name__ == '__main__':
app = QApplication(sys.argv)
window = Window()
sys.exit(app.exec_())
update:
Actually, the issue may be the takeAt. The following code is workable:
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
import sys
class Window(QDialog):
def __init__(self):
super().__init__()
self.initGUI()
self.show()
def initGUI(self):
layout = QVBoxLayout()
self.setLayout(layout)
removeLayout = QHBoxLayout()
self.__removeText = QLineEdit()
self.__removeBtn = QPushButton('Remove')
self.__removeBtn.clicked.connect(self.remove)
removeLayout.addWidget(self.__removeText)
removeLayout.addWidget(self.__removeBtn)
ROIsLayout = QVBoxLayout()
for name in ['name1', 'name2']:
subLayout = QHBoxLayout()
subLayout.setObjectName(name)
subText = QLabel(name, parent=self)
subText.setObjectName(name)
subBtn = QPushButton(name, parent=self)
subBtn.setObjectName(name)
subLayout.addWidget(subText)
subLayout.addWidget(subBtn)
ROIsLayout.addLayout(subLayout)
print(name, subLayout, subText, subBtn)
layout.addLayout(removeLayout)
layout.addLayout(ROIsLayout)
self.__ROIsLayout = ROIsLayout
self.record = [subLayout, subText, subBtn]
def remove(self, checked=False):
layout = self.record[0]
txt = self.record[1]
btn = self.record[2]
layout.removeWidget(txt)
txt.setParent(None)
txt.deleteLater()
layout.removeWidget(btn)
btn.setParent(None)
btn.deleteLater()
if __name__ == '__main__':
app = QApplication(sys.argv)
window = Window()
sys.exit(app.exec_())
But, I have printed the QLabel/QPushButton in the self.record, and I find it is the same with that from child.takeAt(0).widget().
The main issue in your code is that you're constantly using takeAt(). The result is that all items in the __ROIsLayout layout will be removed from it (but not deleted), which, in your case, are the sub layouts. This is clearly not a good approach: only the widgets with the corresponding object name will be actually deleted, while the others will still be "owned" by their previous parent, will still be visible at their previous position and their geometries won't be updated since they're not managed by the layout anymore.
There are multiple solutions to your question, all depending on your needs.
If you need to remove rows from a layout, I'd consider setting the object name on the layout instead, and look for it using self.findChild().
Also consider that, while Qt allows setting the same object name for more than one object, that's not suggested.
Finally, while using del is normally enough, it's usually better to call deleteLater() for all Qt objects, which ensures that Qt correctly removes all objects (and related parentship/connections).
Another possibility, for this specific case, is to use a QFormLayout.
I am trying to make a window application in pyqt5 in which user enters a number then click("press me") button .
After that a number of rows are created according to the number entered by the user and one push button ("GO")
Each column has three labels with three textboxes
I managed to make the rows already , but what i can't manage is fetching the data from the textboxes when the push button is clicked
Note1: For simplicity , i was just trying the code for one textbox only then i will add more textboxes
Note2: i heard about some function called Lambda , but i searched for it and i couldn't find good explanation to it
Note3: Similar questions that didn't work for me:
Acessing dynamically added widgets I didn't know how to use this answer as i have two kinds of widgets in the layout , label and qlinedit
getting values from dynamically created qlinedits This answer didn't suit my case as i want one only button to get the data in all created textboxes
Code :
from PyQt5 import QtWidgets, QtGui, QtCore
from PyQt5 import *
from PyQt5.QtWidgets import QLineEdit,QLabel,QGridLayout
import sys
class Window(QtWidgets.QWidget):
def __init__(self, parent=None):
super(Window, self).__init__(parent)
self.home()
def home(self):
self.grid=QGridLayout()
self.setLayout(self.grid)
self.label=QLabel(self)
self.label.setText("NO")
self.grid.addWidget(self.label,0,1)
self.pushButton_ok = QtWidgets.QPushButton("Press me", self)
self.pushButton_ok.clicked.connect(self.addtextbox)
self.grid.addWidget(self.pushButton_ok,0,10)
self.input1=QLineEdit(self)
self.grid.addWidget(self.input1,0,5)
def addtextbox(self):
no_of_process=(self.input1.text())
no=int(no_of_process)
n=0
while(n<no):
self.bursttime=QLabel(self)
self.bursttime.setText("b")
self.timeinput=QLineEdit(self)
self.grid.addWidget(self.bursttime,2*n+1,0)
self.grid.addWidget(self.timeinput,2*n+1,1)
n=n+1
self.go=QtWidgets.QPushButton("GO",self)
self.grid.addWidget(self.go,6,0)
self.go.clicked.connect(self.printvalues)
def printvalues():
n=0
#fetch data in some way
application = QtWidgets.QApplication(sys.argv)
window = Window()
window.setWindowTitle('Dynamically adding textboxes using a push button')
window.resize(250, 180)
window.show()
sys.exit(application.exec_())
Main Window of program
when user enters for example 2 to create 2 rows
Try it:
import sys
from PyQt5.QtWidgets import (QLineEdit, QLabel, QGridLayout, QWidget,
QPushButton, QApplication, QSpinBox)
class Window(QWidget):
def __init__(self):
super().__init__()
self.home()
def home(self):
self.grid = QGridLayout()
self.setLayout(self.grid)
self.label = QLabel(self)
self.label.setText("NO")
self.grid.addWidget(self.label, 0, 1)
# self.input1 = QLineEdit(self)
self.input1 = QSpinBox(self) # +++
self.input1.setMinimum(1)
self.input1.setMaximum(12)
self.input1.setValue(3)
self.grid.addWidget(self.input1, 0, 5)
self.pushButton_ok = QPushButton("Press me", self)
self.pushButton_ok.clicked.connect(self.addtextbox) #(self.addCheckbox)
self.grid.addWidget(self.pushButton_ok, 0, 10)
def addtextbox(self):
countLayout = self.layout().count()
if countLayout > 3:
for it in range(countLayout - 3):
w = self.layout().itemAt(3).widget()
self.layout().removeWidget(w)
w.hide()
self.lineEdits = [] # +++
for n in range(self.input1.value()):
self.bursttime = QLabel(self)
self.bursttime.setText("b_{}".format(n))
self.timeinput = QLineEdit(self)
self.timeinput.textChanged.connect(lambda text, i=n : self.editChanged(text, i)) # +++
self.grid.addWidget(self.bursttime, 2*n+1, 0)
self.grid.addWidget(self.timeinput, 2*n+1, 1)
self.lineEdits.append('') # +++
self.go = QPushButton("GO") #, self)
self.grid.addWidget(self.go, 2*n+2, 0)
self.go.clicked.connect(self.printvalues)
def printvalues(self):
# fetch data in some way
for i, v in enumerate(self.lineEdits): # +++
print("bursttime: b_{}, timeinput: {}".format(i, v)) # +++
def editChanged(self, text, i): # +++
self.lineEdits[i] = text # +++
def addCheckbox(self):
print("def addCheckbox(self):")
if __name__ == "__main__":
application = QApplication(sys.argv)
window = Window()
window.setWindowTitle('Dynamically adding textboxes using a push button')
window.resize(250, 180)
window.show()
sys.exit(application.exec_())
I was working on a PyQt5 app which had a dynamically loaded whole tab, with QTableView, QLineEdit and few QPushButtons, and had similar problem, I needed data from that one QLineEdit every tab. I've used QSignalMapper because I had to take data on textChanged() signal, but since you have a simple push button to just grab data, you can use QObject.findChildren() like I did in this example:
from PyQt5 import QtWidgets, QtGui, QtCore
from PyQt5 import *
from PyQt5.QtWidgets import QLineEdit,QLabel,QGridLayout
import sys
class Window(QtWidgets.QWidget):
def __init__(self, parent=None):
super(Window, self).__init__(parent)
self.home()
def home(self):
self.grid=QGridLayout()
self.setLayout(self.grid)
self.label=QLabel(self)
self.label.setText("NO")
self.grid.addWidget(self.label,0,1)
self.pushButton_ok = QtWidgets.QPushButton("Press me", self)
self.pushButton_ok.clicked.connect(self.addtextbox)
self.grid.addWidget(self.pushButton_ok,0,10)
self.input1=QLineEdit(self)
self.grid.addWidget(self.input1,0,5)
def addtextbox(self):
no_of_process=(self.input1.text())
no=int(no_of_process)
n=0
while(n<no):
self.bursttime=QLabel(self)
self.bursttime.setText("b")
self.timeinput=QLineEdit(self)
self.timeinput.setObjectName("timeinput_{0}".format(n))
self.grid.addWidget(self.bursttime,2*n+1,0)
self.grid.addWidget(self.timeinput,2*n+1,1)
n=n+1
self.go=QtWidgets.QPushButton("GO",self)
self.grid.addWidget(self.go,6,0)
self.go.clicked.connect(self.printvalues)
def printvalues(self):
for child in self.findChildren(QLineEdit, QtCore.QRegExp("timeinput_(\d)+")):
print(child.text())
application = QtWidgets.QApplication(sys.argv)
window = Window()
window.setWindowTitle('Dynamically adding textboxes using a push button')
window.resize(250, 180)
window.show()
sys.exit(application.exec_())
P.S. I fixed your pushButton_ok.clicked() signal, it was calling addCheckBox() which doesn't exist.