下面是Python PyQt5库如何在鼠标悬停时给选中的单选按钮设置皮肤的完整使用攻略。
1. 简介
在PyQt5中,我们可以通过在单选按钮上使用“enterEvent”(当鼠标指针进入一个窗口部件时触发的事件)和“leaveEvent”(当鼠标指针离开一个窗口部件时触发的事件)事件来实现当鼠标悬停在单选按钮上时设置皮肤的目的。
2. 步骤
2.1 创建单选按钮
首先,需要使用PyQt5库中的“QRadioButton”类来创建单选按钮。
假设我们有一个单选按钮是这样创建的:
from PyQt5.QtWidgets import QMainWindow, QApplication, QRadioButton
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.radioButton = QRadioButton('Male', self)
2.2 设置鼠标进入和离开事件
然后,我们需要为该单选按钮设置“enterEvent”和“leaveEvent”事件。当鼠标进入该单选按钮时,我们可以使用“setStyleSheet”方法来改变其背景颜色。
def enterEvent(self, event):
self.setStyleSheet("QRadioButton{ background-color : red;}")
当鼠标离开该单选按钮时,可以使用setStyleSheet方法来恢复默认的背景颜色。
def leaveEvent(self, event):
self.setStyleSheet("")
2.3 完整代码样例
from PyQt5.QtWidgets import QMainWindow, QApplication, QRadioButton
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.radioButton = QRadioButton('Male', self)
self.radioButton.setGeometry(50, 50, 100, 50)
self.radioButton.enterEvent = self.radioButtonEnterEvent
self.radioButton.leaveEvent = self.radioButtonLeaveEvent
def radioButtonEnterEvent(self, event):
self.radioButton.setStyleSheet("QRadioButton{ background-color : red;}")
def radioButtonLeaveEvent(self, event):
self.radioButton.setStyleSheet("")
if __name__ == '__main__':
app = QApplication([])
window = MainWindow()
window.show()
app.exec_()
3. 示例说明
3.1 示例1
下面是一个更完整的例子,在这个例子中,我们创建了两个单选按钮,当鼠标悬停在按钮上时,不仅改变其背景颜色,还会改变其字体颜色。
from PyQt5.QtWidgets import QMainWindow, QApplication, QRadioButton
class MainWindow(QMainWindow):
def __init__(self):
super().__init__()
self.radioButton1 = QRadioButton('Male', self)
self.radioButton1.setGeometry(50, 50, 100, 50)
self.radioButton2 = QRadioButton('Female', self)
self.radioButton2.setGeometry(250, 50, 100, 50)
# 为按钮设置鼠标进入和离开事件
self.radioButton1.enterEvent = self.radioButton1EnterEvent
self.radioButton1.leaveEvent = self.radioButton1LeaveEvent
self.radioButton2.enterEvent = self.radioButton2EnterEvent
self.radioButton2.leaveEvent = self.radioButton2LeaveEvent
def radioButton1EnterEvent(self, event):
self.radioButton1.setStyleSheet("QRadioButton{ background-color : red; color : white;}")
def radioButton1LeaveEvent(self, event):
self.radioButton1.setStyleSheet("")
def radioButton2EnterEvent(self, event):
self.radioButton2.setStyleSheet("QRadioButton{ background-color : blue; color : white;}")
def radioButton2LeaveEvent(self, event):
self.radioButton2.setStyleSheet("")
if __name__ == '__main__':
app = QApplication([])
window = MainWindow()
window.show()
app.exec_()
3.2 示例2
下面是另一个例子,利用PyQt5创建类似基于Web的单选按钮,并为其设置颜色和字体变化。
from PyQt5.QtWidgets import QMainWindow, QApplication, QGroupBox, QVBoxLayout, QRadioButton, QWidget
from PyQt5.QtGui import QPainter, QColor, QBrush, QFont
from PyQt5.QtCore import Qt
class RadioButton(QWidget):
def __init__(self, parent=None):
QWidget.__init__(self, parent)
self.initUI()
def initUI(self):
self.setGeometry(300, 300, 250, 150)
self.setWindowTitle('RadioButton')
mainlayout = QVBoxLayout()
groupBox = QGroupBox()
groupBox.setTitle('Question')
radioButton1 = QRadioButton('Option 1')
radioButton2 = QRadioButton('Option 2')
radioButton3 = QRadioButton('Option 3')
self.buttons = [radioButton1, radioButton2, radioButton3]
radioButton1.setChecked(True)
vbox = QVBoxLayout()
vbox.addWidget(radioButton1)
vbox.addWidget(radioButton2)
vbox.addWidget(radioButton3)
groupBox.setLayout(vbox)
mainlayout.addWidget(groupBox)
self.setLayout(mainlayout)
for button in self.buttons:
button.enterEvent = self.radioButtonEnterEvent
button.leaveEvent = self.radioButtonLeaveEvent
def radioButtonEnterEvent(self, event):
event.type()
event.accept()
event.ignore()
button = self.focusWidget()
painter = QPainter()
painter.begin(button)
painter.setBrush(QBrush(QColor(0, 0, 255)))
painter.drawRect(0, 0, button.width()-1, button.height()-1)
painter.setPen(QColor(255, 0, 0))
painter.setFont(QFont('Decorative', 10))
painter.drawText(0, 0, button.width()-1, button.height()-1, Qt.AlignCenter, button.text())
painter.end()
def radioButtonLeaveEvent(self, event):
button = self.focusWidget()
button.repaint()
if __name__ == '__main__':
app = QApplication([])
window = RadioButton()
window.show()
app.exec_()
以上就是如何通过PyQt5设置悬浮在单选按钮上时的皮肤的完整攻略和两个实例。希望可以帮助你更好地使用PyQt5。