我想要一个切换按钮根据切换状态显示不同的图像。该功能在默认的 QApplication 样式(“WindowsVista”)中运行良好。但WindowsVista风格很难看,我宁愿使用Fusion风格。不幸的是,图像在融合风格中没有改变。
代码:
from PyQt5.QtWidgets import (QApplication, QMainWindow, QPushButton,
QStyleFactory, QLabel)
from PyQt5.QtGui import QIcon
from PyQt5.QtCore import QSize
from PyQt5 import Qt, QtCore
import sys
class Test(QMainWindow):
def __init__(self, parent=None):
super(Test, self).__init__(parent=parent)
self.setGeometry(50,50,300,400)
icon = QIcon()
icon.addFile('red.png', state = QIcon.Off)
icon.addFile('green.png', state = QIcon.On)
button = QPushButton(parent = self)
button.setCheckable(True)
button.setIcon(icon)
button.setIconSize(QSize(150,150))
button.setGeometry(50,50,200,200)
verString = 'PyQt version: ' + Qt.PYQT_VERSION_STR + '\n'
verString += 'Qt version: ' + QtCore.qVersion()
print(verString)
label = QLabel(verString, parent = self)
label.setGeometry(50, 250, 200, 150)
if __name__ == '__main__':
app = QApplication(sys.argv)
#app.setStyle(QStyleFactory.create('fusion'))
app.setStyle(QStyleFactory.create('windowsvista'))
test = Test()
test.show()
sys.exit(app.exec_() )
WindowsVista 样式(左侧按钮向上,右侧按钮向下):
融合风格(左侧按钮向上,右侧按钮向下):
最佳答案
由于 source code 中所示的融合样式,这似乎是默认行为。 :
# ...
case CE_PushButtonLabel:
if (const QStyleOptionButton *button = qstyleoption_cast(option)) {
QStyleOptionButton b(*button);
// no PM_ButtonShiftHorizontal and PM_ButtonShiftVertical for fusion style
<b>b.state &= ~(State_On | State_Sunken);</b>
QCommonStyle::drawControl(element, &b, painter, widget);
}
break;
// ...
一个可能的解决方案是实现一个覆盖此行为的 QProxyStyle:
import sys
from PyQt5.QtCore import QSize, qVersion, PYQT_VERSION_STR
from PyQt5.QtGui import QIcon
from PyQt5.QtWidgets import (
QApplication,
QMainWindow,
QPushButton,
QStyleFactory,
QLabel,
QProxyStyle,
QStyle,
QCommonStyle,
)
class ProxyStyle(QProxyStyle):
def drawControl(self, control, option, painter, widget):
if control == QStyle.CE_PushButtonLabel:
QCommonStyle.drawControl(self, control, option, painter, widget)
else:
super().drawControl(control, option, painter, widget)
class Test(QMainWindow):
def __init__(self, parent=None):
super(Test, self).__init__(parent=parent)
self.setGeometry(50, 50, 300, 400)
icon = QIcon()
icon.addFile("red.png", state=QIcon.Off)
icon.addFile("green.png", state=QIcon.On)
button = QPushButton(parent=self)
button.setCheckable(True)
button.setIcon(icon)
button.setIconSize(QSize(150, 150))
button.setGeometry(50, 50, 200, 200)
verString = "PyQt version: " + PYQT_VERSION_STR + "\n"
verString += "Qt version: " + qVersion()
print(verString)
label = QLabel(verString, parent=self)
label.setGeometry(50, 250, 200, 150)
if __name__ == "__main__":
app = QApplication(sys.argv)
app.setStyle(QStyleFactory.create("fusion"))
proxy = ProxyStyle(app.style())
app.setStyle(proxy)
test = Test()
test.show()
sys.exit(app.exec_())
关于python - PyQt5 Fusion 风格按钮图标损坏,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/63697206/