我最近一直在学习pyqt5作为我的第一个GUI框架。到目前为止,我一直在尝试使用QtStackedLayout。我目前有两个窗口屏幕,一个在UI类中创建,另一个在另一个单独的类中创建。我有两个问题:
self
来作为某种父级进行插入,以防止这,但我认为我做得不好。请参阅以下代码(我的导入语句不正确,我将对其进行整理)
import sys
from PyQt5.QtCore import *
from PyQt5.QtGui import *
from PyQt5.QtWidgets import *
class Ui(QWidget):
def setupUi(self, Main, width, height):
self.stack = QStackedLayout()
self.window_1 = WindowOne(width, height)
self.window_2 = QWidget(self)
self.window_2_UI()
self.stack.addWidget(self.window_1)
self.stack.addWidget(self.window_2)
# Only one button
self.btn = QPushButton("Change window", self)
# Create the central widget of your Main Window
self.main_widget = QWidget(self)
layout = QVBoxLayout(self.main_widget)
layout.addLayout(self.stack)
layout.addWidget(self.btn)
self.setCentralWidget(self.main_widget)
self.btn.clicked.connect(self.change_window)
def change_window(self):
if self.stack.currentIndex() == 0:
self.stack.setCurrentIndex(1)
else:
self.stack.setCurrentIndex(0)
def window_2_UI(self):
label = QLabel("In Window 2", self.window_2)
class WindowOne(QWidget):
def __init__(self, width, height):
super().__init__()
self.set_bg(width, height)
self.set_label()
# self.setStyleSheet("background-image: url(:resource/images/blue_bg.jpg)")
def set_label(self):
label = QLabel("In Window 1", self)
def set_bg(self, w, h):
oImage = QImage("resource/images/blue_bg.jpg")
sImage = oImage.scaled(QSize(w, h))
palette = QPalette()
palette.setBrush(10, QBrush(sImage))
self.setPalette(palette)
class Main(QMainWindow, Ui):
def __init__(self):
super().__init__()
self.w_width = 480
self.w_height = 720
self.resize(self.w_width, self.w_height)
self.init_ui()
self.setupUi(self, self.w_width, self.w_height)
def init_ui(self):
self.center()
self.setWindowTitle('Main Window')
def center(self):
qr = self.frameGeometry()
cp = QDesktopWidget().availableGeometry().center()
qr.moveCenter(cp)
self.move(qr.topLeft())
if __name__ == "__main__":
app = QApplication(sys.argv)
M = Main()
M.show()
sys.exit(app.exec())
答案 0 :(得分:2)
默认情况下,仅窗口(与窗口小部件不同)将使用QPalette的背景色,如果您希望窗口小部件使用QPalette的背景色,则必须启用autoFillBackground
属性。
# ...
self.set_label(width, height)
self.setAutoFillBackground(True)
# ...
尽管您的代码有些混乱,例如,您确定某些方法会接收某些参数,但是您从不使用它们。最后,我认为您希望使用窗口的大小来重新缩放图像的背景,因此我已经覆盖了resizeEvent()方法,以便缩放采用窗口的大小。
考虑到上述所有情况,我改进了您的代码:
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
class Widget(QtWidgets.QWidget):
def __init__(self, parent=None):
super(Widget, self).__init__(parent)
self.m_stacked_layout = QtWidgets.QStackedLayout()
self.widget_1 = WidgetOne()
self.widget_2 = QtWidgets.QWidget()
self.widget_2_UI()
self.m_stacked_layout.addWidget(self.widget_1)
self.m_stacked_layout.addWidget(self.widget_2)
button = QtWidgets.QPushButton(
"Change window", clicked=self.change_window
)
lay = QtWidgets.QVBoxLayout(self)
lay.addLayout(self.m_stacked_layout)
lay.addWidget(button)
@QtCore.pyqtSlot()
def change_window(self):
ix = self.m_stacked_layout.currentIndex()
self.m_stacked_layout.setCurrentIndex(1 if ix == 0 else 0)
def widget_2_UI(self):
label = QtWidgets.QLabel("In Window 2", self.widget_2)
class WidgetOne(QtWidgets.QWidget):
def __init__(self, parent=None):
super().__init__(parent)
self.setAutoFillBackground(True)
self.set_label()
self.m_image = QtGui.QImage("resource/images/blue_bg.jpg")
def set_label(self):
label = QtWidgets.QLabel("In Window 1", self)
def resizeEvent(self, event):
palette = self.palette()
sImage = self.m_image.scaled(event.size())
palette.setBrush(10, QtGui.QBrush(sImage))
self.setPalette(palette)
super(WidgetOne, self).resizeEvent(event)
class Main(QtWidgets.QMainWindow):
def __init__(self, parent=None):
super().__init__(parent)
widget = Widget()
self.setCentralWidget(widget)
self.resize(480, 720)
if __name__ == "__main__":
app = QtWidgets.QApplication(sys.argv)
w = Main()
w.show()
sys.exit(app.exec())