In the GUI, the styling applied to the QLabel is applied only upto the height of the text in it. How do I increase it to fill the available region?
You can try something like this:
from PySide import QtGui, QtCore
import sys
class MainWindow(QtGui.QWidget):
def __init__(self):
super().__init__()
layout = QtGui.QHBoxLayout()
self.setLayout(layout)
label = QtGui.QLabel('5')
label.setAutoFillBackground(True)
p = label.palette()
p.setColor(label.backgroundRole(), QtCore.Qt.red)
label.setPalette(p)
layout.addWidget(label)
self.show()
def main():
app = QtGui.QApplication(sys.argv)
window = MainWindow()
sys.exit(app.exec_())
if __name__ == '__main__':
main()
Related
I want to set the background for text, which means that I want to set the color of the rectangle contains the text. I have tested QPainter.setBackground, but it do not work. This is my code:
import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class MyLabel(QLabel):
def __init__(self):
super(MyLabel, self).__init__()
self.setMinimumHeight(200)
self.setMinimumWidth(200)
def paintEvent(self, QPaintEvent):
super(MyLabel, self).paintEvent(QPaintEvent)
pos = QPoint(50, 50)
painter = QPainter(self)
brush = QBrush()
brush.setColor(QColor(255,0,0))
painter.setBackgroundMode(Qt.OpaqueMode)
painter.setBackground(brush)
painter.drawText(pos, 'hello,world')
class Window(QWidget):
def __init__(self):
super(Window, self).__init__()
layout = QHBoxLayout(self)
self.label = MyLabel()
layout.addWidget(self.label)
if __name__ == '__main__':
app = QApplication(sys.argv)
window = Window()
window.show()
sys.exit(app.exec_())
What I want is:
Thanks for any help.
It is not necessary to implement a personalized QLabel, it is enough to set the background color through Qt Style Sheet, also do not use a layout if you want to establish a certain position
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
class Window(QtWidgets.QWidget):
def __init__(self):
super(Window, self).__init__()
self.label = QtWidgets.QLabel("hello,world", self)
self.label.adjustSize()
self.label.setStyleSheet(
"background-color: {};".format(QtGui.QColor(255, 0, 0).name())
)
self.label.move(QtCore.QPoint(50, 50))
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
window = Window()
window.resize(640, 480)
window.show()
sys.exit(app.exec_())
The central widget in my QMainWindow keeps covering up the QMenuBar I want. How do I avoid this?
If I comment out the pushbutton, I can see the menu bar using the code below.
from PyQt5 import QtWidgets
class Test:
def __init__(self):
self.app = QtWidgets.QApplication([])
self.win = QtWidgets.QMainWindow()
self.win.resize(100,100)
menu_bar = QtWidgets.QMenuBar(self.win)
file_menu = menu_bar.addMenu('&File')
pb = QtWidgets.QPushButton('push me!')
# self.win.setCentralWidget(pb)
self.win.show()
self.app.exec()
if __name__ == '__main__':
Test()
Shouldn't the QMainWindow manage to separate them according to this?
You must set the QMenuBar in the QMainWindow using setMenuBar():
from PyQt5 import QtWidgets
class Test:
def __init__(self):
self.app = QtWidgets.QApplication([])
self.win = QtWidgets.QMainWindow()
self.win.resize(100,100)
menu_bar = QtWidgets.QMenuBar(self.win)
self.win.setMenuBar(menu_bar)
file_menu = menu_bar.addMenu('&File')
pb = QtWidgets.QPushButton('push me!')
self.win.setCentralWidget(pb)
self.win.show()
self.app.exec()
if __name__ == '__main__':
Test()
I am trying to set a fixed height for QHBoxLayout. To elaborate more on that, I need to set a specific height for my Horizontal layout. However, I cannot find the proper way to do so. What should I do to make this happen?
hbox1 = QHBoxLayout()
As noted by #ekhumuro in QHBoxLayout you can not set the fixed height, you must do that to the widget where it will be contained as I show below:
import random
from PyQt5 import QtCore, QtGui, QtWidgets
class Widget(QtWidgets.QWidget):
def __init__(self, parent=None):
super(Widget, self).__init__(parent)
self.setFixedHeight(300)
lay = QtWidgets.QHBoxLayout(self)
for letter in "ABCDEFG":
label = QtWidgets.QLabel(letter, alignment=QtCore.Qt.AlignCenter)
color = QtGui.QColor(*[random.randint(0, 255) for _ in range(3)])
label.setStyleSheet("background-color: {}".format(color.name()))
lay.addWidget(label)
if __name__ == '__main__':
import sys
app = QtWidgets.QApplication(sys.argv)
w = Widget()
w.show()
sys.exit(app.exec_())
I'm using the QPushButton to load the UI. First -> Jumin -> Department -> next -> next I want to create the UI in order. The problem is that I can not load the third Department into the QMainwindow window. I do not know why
When you create a widget in QVBoxLayout, it changes the size of the widget according to the wallpaper like wxpython layout (wx.all). Can not change the position (move) and size (resize) by automatic centering?
import sys
from PyQt5.QtWidgets import *
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.center_widget = QWidget()
self.setCentralWidget(self.center_widget)
self.FirstUI()
def FirstUI(self):
self.btn1 = QPushButton('test1', self)
self.btn1.move(50, 50)
self.btn1.clicked.connect(self.btn1_click)
def JuminUI(self):
self.ju1 = QLineEdit('13')
self.btn2 = QPushButton('^^^^^^^^^^')
self.ju_text = QLabel('asd')
self.jumim_layout = QVBoxLayout()
self.jumim_layout.addWidget(self.ju_text)
self.jumim_layout.addWidget(self.ju1)
self.jumim_layout.addWidget(self.btn2)
self.centralWidget().setLayout(self.jumim_layout)
self.btn2.clicked.connect(self.btn2_click)
def DepartmentUI(self):
self.depart_layout = QVBoxLayout()
self.depart_layout.addWidget(QPushButton('sdfsdf'))
self.centralWidget().setLayout(self.depart_layout)
def btn1_click(self):
self.btn1.deleteLater()
self.JuminUI()
def btn2_click(self):
self.ju1.deleteLater()
self.btn2.deleteLater()
self.ju_text.deleteLater()
self.DepartmentUI()
if __name__ == "__main__":
app = QApplication(sys.argv)
fream = MainWindow()
fream.show()
app.exec_()
creating and removing widgets is almost always a bad idea, and your code falls into those bad ideas, it's always best to hide the widgets and for that you should use the QStackedWidget, what QStackedWidget does is just make a widget visible on all widgets that you have been assigned by changing the currentIndex.
import sys
from functools import partial
from PyQt5 import QtWidgets
class MainWindow(QtWidgets.QMainWindow):
def __init__(self):
super().__init__()
self.center_widget = QtWidgets.QStackedWidget()
self.setCentralWidget(self.center_widget)
self.FirstUI()
self.JuminUI()
self.DepartmentUI()
def FirstUI(self):
widget = QtWidgets.QWidget()
self.btn1 = QtWidgets.QPushButton('test1', widget)
self.btn1.move(50, 50)
self.center_widget.addWidget(widget)
self.btn1.clicked.connect(partial(self.center_widget.setCurrentIndex, 1))
def JuminUI(self):
widget = QtWidgets.QWidget()
lay = QtWidgets.QVBoxLayout(widget)
self.ju1 = QtWidgets.QLineEdit('13')
self.btn2 = QtWidgets.QPushButton('^^^^^^^^^^')
self.ju_text = QtWidgets.QLabel('asd')
lay.addWidget(self.ju_text)
lay.addWidget(self.ju1)
lay.addWidget(self.btn2)
self.center_widget.addWidget(widget)
self.btn2.clicked.connect(partial(self.center_widget.setCurrentIndex, 2))
def DepartmentUI(self):
widget = QtWidgets.QWidget()
lay = QtWidgets.QVBoxLayout(widget)
lay.addWidget(QtWidgets.QPushButton('sdfsdf'))
self.center_widget.addWidget(widget)
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
fream = MainWindow()
fream.show()
sys.exit(app.exec_())
I want to find QLabel with specific text and focus view on it. Finding widget with desired text is easy, but I couldn't figure out how to focus view on it.
The code so far looks like this:
import sys
from PySide import QtCore, QtGui
class MainWindow(QtGui.QMainWindow):
def __init__(self):
super().__init__()
widget = QtGui.QWidget()
self.layout = QtGui.QGridLayout()
for i in range(10):
label = QtGui.QLabel("aaaa" + str(i))
self.layout.addWidget(label, i, 0)
widget.setLayout(self.layout)
self.toolbar = self.addToolBar("aa")
findAction = QtGui.QAction('Find', self)
findAction.triggered.connect(self.find)
self.toolbar.addAction(findAction)
self.scroll = QtGui.QScrollArea()
self.scroll.setWidget(widget)
self.scroll.setWidgetResizable(True)
self.setMaximumSize(200, 200)
self.setCentralWidget(self.scroll)
def find(self):
widgets = (self.layout.itemAt(i).widget() for i in range(self.layout.count()))
for w in widgets:
if isinstance(w, QtGui.QLabel):
if w.text() == "aaaa9":
w.setFocus()
def main():
app = QtGui.QApplication(sys.argv)
mainWindow = MainWindow()
mainWindow.show()
app.exec_()
if __name__ == "__main__":
main()
Any ideas how to get focus working?
You can use ensureWidgetVisible()
self.scroll.ensureWidgetVisible(w)