我正在设置一个新的桌面小部件,以使工作更轻松,并使用QPropertyAnimation使其美观。将应用程序渐入渐出似乎并不想工作,并且以典型的编码器方式运行,这使我的进步陷入了停滞。
我正在一个个性化的类中实现QPropertyAnimation,以使我的生活更轻松,但是由于它最初没有起作用,所以我将其带回到类代码中,并且仍然很顽固。到目前为止,我已经尝试过了。
class widget(QWidget):
def init(self):
self.setSize(QSize(300, 300))
self.setWindowOpacity(1)
self.setWindowFlags(Qt.FramelessWindowHint | Qt.WindowStaysOnTopHint)
self.setAttribute(Qt.WA_TranslucentBackground)
def paintEvent(self, event):
s = self.size()
qp = QPainter()
qp.begin(self)
qp.setRenderHint(QPainter.Antialiasing, True)
qp.setBrush(QColor().fromRgb(2,106,194))
qp.setPen(QColor().fromRgb(2,106,194))
qp.drawRoundRect(QRect(0,0, 300, 300), 16, 8)
qp.end()
def show(self):
self.superShow()
a = QPropertyAnimation(self, "windowOpacity")
a.setDuration(500)
a.setStartValue(1)
a.setEndValue(0)
a.start()
def hide(self):
a = QPropertyAnimation(self, "windowOpacity")
a.setDuration(500)
a.setStartValue(0)
a.setEndValue(1)
a.finished.connect(self.superHide)
a.start()
def superShow(self):
super(widget, self).show()
def superHide(self):
super(widget, self).hide()
没有任何错误消息,只是在动画持续时间结束后隐藏并显示。不知道在哪里看或如何使它工作。我只编码了大约3个月左右。
答案 0 :(得分:1)
您的代码有很多错误,例如:
我将使用QGraphicsOpacityEffect而不是直接更改不透明度,而不是使用show and close方法,而是使用showEvent,hideEvent和closeEvent方法。
import sys
from PySide2.QtCore import QEasingCurve, QEventLoop, QPropertyAnimation, QRect, QSize, Qt
from PySide2.QtGui import QColor, QPainter
from PySide2.QtWidgets import QAction, QApplication, QGraphicsOpacityEffect, QWidget
class Widget(QWidget):
def __init__(self, parent=None):
super().__init__(parent)
self.resize(QSize(300, 300))
# self.setWindowOpacity(1)
self.setWindowFlags(Qt.FramelessWindowHint | Qt.WindowStaysOnTopHint)
self.setAttribute(Qt.WA_TranslucentBackground)
self.setContextMenuPolicy(Qt.ActionsContextMenu)
quit_action = QAction(self.tr("E&xit"), self)
quit_action.setShortcut(self.tr("Ctrl+Q"))
quit_action.triggered.connect(self.close)
self.addAction(quit_action)
effect = QGraphicsOpacityEffect(self, opacity=1.0)
self.setGraphicsEffect(effect)
self._animation = QPropertyAnimation(
self,
propertyName=b"opacity",
targetObject=effect,
duration=500,
startValue=0.0,
endValue=1.0,
)
def paintEvent(self, event):
qp = QPainter(self)
qp.setRenderHint(QPainter.Antialiasing, True)
qp.setBrush(QColor().fromRgb(2, 106, 194))
qp.setPen(QColor().fromRgb(2, 106, 194))
qp.drawRoundedRect(QRect(0, 0, 300, 300), 16, 8)
def fade_in(self):
self._animation.setDirection(QPropertyAnimation.Forward)
self._animation.start()
def fade_out(self):
loop = QEventLoop()
self._animation.finished.connect(loop.quit)
self._animation.setDirection(QPropertyAnimation.Backward)
self._animation.start()
loop.exec_()
def showEvent(self, event):
super().showEvent(event)
self.fade_in()
def closeEvent(self, event):
# fade out
self.fade_out()
super().closeEvent(event)
def hideEvent(self, event):
# fade out
self.fade_out()
super().hideEvent(event)
if __name__ == "__main__":
import sys
app = QApplication(sys.argv)
w = Widget()
w.show()
sys.exit(app.exec_())