Hi all
Some days ago, I send a question to this community about a clickable QLineEdit.
After getting the Hint to use QMouseEvent, I've written the program which is
working almost good but with a small or perhaps big ugliness and that is:
Below is the imgur link to the screenshots of my program after clicking the
buttons in sequence:
https://imgur.com/a/rfcP3qB
As you will see in the code blow, I override the QlineEdit widget and define a
new class " CustomLineEdit " to generate a "clicked" signal, when the user
pressed with mouse on this field.
I use this "CustomLineEdit" class and place it on the MainWindow with the
desired "layout".
I couldn't figure out, why this widget is placed not in the MainWindow, but
outside this window, as you can see in the top picture of the attached
screenshots.
When I take the line 12 (self.show()) from the code, the generated class will
not appear.
The problem here is that at the beginning, the MainWindow with a LineEdit field
should appear at the program start.
Then, after clicking on this field, the keypad should come up outside the
MainWindow.
Could anyone see, where my mistake is?
Thanks for any help.
Mohsen
Here is the code:
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import sys
from PyQt5.QtWidgets import (QApplication, QLineEdit, QPushButton, QMainWindow,
QVBoxLayout, QHBoxLayout, QGridLayout, QWidget)
from PyQt5.QtCore import pyqtSignal, pyqtSlot
class CustomLineEdit(QLineEdit):
clicked = pyqtSignal()
def __init__(self):
super().__init__()
self.show()
def mousePressEvent(self, QMouseEvent):
self.clicked.emit()
class MainWindow(QMainWindow):
def __init__( self, parent=None ):
super().__init__(parent)
self.title = 'Window 1'
self.left = 700
self.top = 300
self.width = 200
self.height = 200
self.initUI()
def initUI(self):
self.keypad_window = Keypad_Window(self)
hbox = QHBoxLayout()
self.cle = CustomLineEdit()
self.cle.clicked.connect(self.show_keypad_window)
self.cle.setFixedSize(220, 60)
self.cle.setStyleSheet("color: red;"
"background-color: yellow;"
"font-family: Arial;"
"font-weight: Bold;"
"font-size: 30pt")
hbox.addWidget(self.cle)
self.setLayout(hbox)
self.setWindowTitle(self.title)
self.setGeometry(self.left, self.top, self.width, self.height)
self.show()
def show_keypad_window(self):
self.keypad_window.show()
self.hide()
def close(self):
self.keypad_window.close()
super(MainWindow, self).close()
@pyqtSlot(str)
def update_label(self, txt):
self.cle.setText(txt)
class Keypad_Window(QWidget):
def __init__(self, parent=None):
super().__init__()
self.parent = parent
self.setGeometry(1200, 500, 230, 400)
vbox = QVBoxLayout()
self.display = QLineEdit()
self.display.setFixedSize(220, 60)
self.display.setReadOnly(True)
self.display.setStyleSheet("color: Blue; "
"background-color: lightgreen;"
"font-family: Arial;"
"font-weight: Bold;"
"font-size: 18pt")
vbox.addWidget(self.display)
"""Create the buttons."""
self.buttons = {}
self.gridlay = QGridLayout()
self.button_name = [['7', '8', '9'],
['4', '5', '6'],
['1', '2', '3'],
['C', '0', '>']]
self.command_name = [['7', '8', '9'],
['4', '5', '6'],
['1', '2', '3'],
['delete', '0', 'accept']]
for i in range(4):
for j in range(3):
text = self.button_name[i][j]
# keep a reference to the buttons
self.buttons[i, j] = QPushButton()
self.buttons[i, j].setText(text)
self.buttons[i, j].setObjectName(text)
self.buttons[i, j].setFixedSize(70, 70)
if i == 3:
if j == 0:
self.buttons[i, j].setToolTip('Each click deletes\na
digit to the left')
if j == 2:
self.buttons[i, j].setToolTip('The whole
displayed\nvalue will be taken!')
self.buttons[i, j].clicked.connect(self.call_button_fun(i, j,
self.command_name))
# add to the GridLayout
self.gridlay.addWidget(self.buttons[i, j], i, j)
self.buttons[i, j].setStyleSheet("color: blue; "
"background-color: cyan;"
"font-family: Arial;"
"font-weight: Bold;"
"font-size: 20pt")
vbox.addLayout(self.gridlay)
self.setLayout(vbox)
def call_button_fun(self, i, j, command_name):
def button_fun():
if command_name[i][j] == self.button_name[i][j]:
displayed_text = self.display.text()
self.new_text = displayed_text + self.button_name[i][j]
self.display.setText(self.new_text)
if command_name[i][j] == 'accept':
print('>-key pressed!')
self.parent.cle.setText(self.new_text)
self.close()
if command_name[i][j] == 'delete':
print('C-key pressed!')
self.display.setText('')
return button_fun
if __name__ == "__main__":
app = QApplication(sys.argv)
mainwindow = MainWindow()
# Exception abfangen, wenn sie nicht behandelt wurde
sys._excepthook = sys.excepthook
def exception_hook(exctype, value, traceback):
print(exctype, value, traceback)
sys._excepthook(exctype, value, traceback)
sys.exit(1)
sys.excepthook = exception_hook
sys.exit(app.exec_())
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