我正在为触摸屏显示中的切换屏幕制作python应用程序。我需要使用飞溅效果（不是窗口效果）动态制作切换屏幕，但是我不知道如何切换屏幕。
我有两个屏幕课。屏幕类有一个按钮可以切换屏幕。
如何切换屏幕？
码：
import sys
from PyQt5 import QtCore, QtGui, QtWidgets
class PicButton(QtWidgets.QPushButton):
def __init__(self, pixmap, pixmap_pressed, width, height, id_button, parent=None):
super(PicButton, self).__init__(parent)
self.pixmap = pixmap
self.pixmap_pressed = pixmap_pressed
self.id_buton = id_button
self.width = width
self.height = height
def paintEvent(self, event):
if self.isDown():
pix = self.pixmap_pressed
print("Pressed button: ", self.id_buton)
else:
pix = self.pixmap
painter = QtGui.QPainter(self)
painter.drawPixmap(event.rect(), pix)
def sizeHint(self):
return QtCore.QSize(self.width, self.height)
class ScreenNext(QtWidgets.QWidget):
def __init__(self):
super().__init__(flags=QtCore.Qt.SplashScreen)
self.setGeometry(800, 450, 800, 450)
pixmap = QtGui.QPixmap("background.png")
brush = QtGui.QBrush(pixmap)
palette = QtGui.QPalette()
palette.setBrush(QtGui.QPalette.Window, brush)
self.setPalette(palette)
self.next_button = PicButton(QtGui.QPixmap("next_screen_up.png"),
QtGui.QPixmap("next_screen_down.png"), 111, 61, "next")
hlayout = QtWidgets.QHBoxLayout(self)
hlayout.addStretch()
hlayout.addWidget(self.next_button)
hlayout.addStretch()
self.next_button.clicked.connect(self.switch_screen)
self.show()
def switch_screen(self):
print("ScreenNext")
class ScreenReturn(QtWidgets.QWidget):
def __init__(self):
super().__init__(flags=QtCore.Qt.SplashScreen)
self.setGeometry(800, 450, 800, 450)
pixmap = QtGui.QPixmap("background.png")
brush = QtGui.QBrush(pixmap)
palette = QtGui.QPalette()
palette.setBrush(QtGui.QPalette.Window, brush)
self.setPalette(palette)
self.return_button = PicButton(QtGui.QPixmap("return_screen_up.png"),
QtGui.QPixmap("return_screen_down.png"), 111, 61, "return")
hlayout = QtWidgets.QHBoxLayout(self)
hlayout.addStretch()
hlayout.addWidget(self.return_button)
hlayout.addStretch()
self.return_button.clicked.connect(self.switch_screen)
self.show()
def switch_screen(self):
print("ScreenReturn")
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
screen = ScreenReturn()
sys.exit(app.exec_())
在链接中获取图像：http://www.filedropper.com/images_1
在链接中获取gif演示：http://www.filedropper.com/display
最佳答案
根据您共享的.gif，您希望小部件占据整个屏幕，因此您必须使用showFullScreen，另一方面，最好创建一个处理过渡的类，在这种情况下，ScreenManager将负责制作发出关联信号时的过渡。
import sys
from functools import partial
from PyQt5 import QtCore, QtGui, QtWidgets
class PicButton(QtWidgets.QPushButton):
def __init__(self, pixmap, pixmap_pressed, width, height, id_button, parent=None):
super(PicButton, self).__init__(parent)
self.pixmap = pixmap
self.pixmap_pressed = pixmap_pressed
self.id_buton = id_button
self.setFixedSize(width, height)
def paintEvent(self, event):
if self.isDown():
pix = self.pixmap_pressed
print("Pressed button: ", self.id_buton)
else:
pix = self.pixmap
painter = QtGui.QPainter(self)
painter.drawPixmap(event.rect(), pix)
class ScreenNext(QtWidgets.QWidget):
def __init__(self):
super().__init__()
self.setGeometry(800, 450, 800, 450)
pixmap = QtGui.QPixmap("background.png")
brush = QtGui.QBrush(pixmap)
palette = QtGui.QPalette()
palette.setBrush(QtGui.QPalette.Window, brush)
self.setPalette(palette)
self.next_button = PicButton(QtGui.QPixmap("next_screen_up.png"),
QtGui.QPixmap("next_screen_down.png"), 111, 61, "next")
hlayout = QtWidgets.QHBoxLayout(self)
hlayout.addStretch()
hlayout.addWidget(self.next_button)
hlayout.addStretch()
class ScreenReturn(QtWidgets.QWidget):
def __init__(self):
super().__init__()
self.setGeometry(800, 450, 800, 450)
pixmap = QtGui.QPixmap("background.png")
brush = QtGui.QBrush(pixmap)
palette = QtGui.QPalette()
palette.setBrush(QtGui.QPalette.Window, brush)
self.setPalette(palette)
self.return_button = PicButton(QtGui.QPixmap("return_screen_up.png"),
QtGui.QPixmap("return_screen_down.png"), 111, 61, "return")
hlayout = QtWidgets.QHBoxLayout(self)
hlayout.addStretch()
hlayout.addWidget(self.return_button)
hlayout.addStretch()
class ScreenManager(QtCore.QObject):
def __init__(self, parent=None):
super(ScreenManager, self).__init__(parent)
self._current_window = None
def add_transition(self, signal, screen):
conn = signal.connect(partial(self.open_window, screen))
def open_window(self, window, *args):
if self._current_window is not None:
self._current_window.hide()
window.showFullScreen()
self._current_window = window
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
screen1 = ScreenReturn()
screen2 = ScreenNext()
manager = ScreenManager()
manager.add_transition(screen1.return_button.clicked, screen2)
manager.add_transition(screen2.next_button.clicked, screen1)
screen1.showFullScreen()
sys.exit(app.exec_())