启动画面动画

QSplashScreen/GifSplashScreen.py

@@ -0,0 +1,64 @@
+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""
+Created on 2020/6/11
+@author: Irony
+@site: https://pyqt.site https://github.com/PyQt5
+@email: 892768447@qq.com
+@file:
+@description: 
+"""
+
+__Author__ = 'Irony'
+__Copyright__ = 'Copyright (c) 2020'
+__Version__ = 'Version 1.0'
+
+from PyQt5.QtCore import QTimer, Qt
+from PyQt5.QtGui import QMovie
+from PyQt5.QtWidgets import QApplication, QSplashScreen, QWidget
+
+
+class GifSplashScreen(QSplashScreen):
+
+    def __init__(self, *args, **kwargs):
+        super(GifSplashScreen, self).__init__(*args, **kwargs)
+        self.movie = QMovie('Data/splash.gif')
+        self.movie.frameChanged.connect(self.onFrameChanged)
+        self.movie.start()
+
+    def onFrameChanged(self, _):
+        self.setPixmap(self.movie.currentPixmap())
+
+    def finish(self, widget):
+        self.movie.stop()
+        super(GifSplashScreen, self).finish(widget)
+
+
+if __name__ == '__main__':
+    import sys
+    import cgitb
+
+    cgitb.enable(1, None, 5, '')
+
+    app = QApplication(sys.argv)
+    splash = GifSplashScreen()
+    splash.show()
+
+
+    def createWindow():
+        app.w = QWidget()
+        # 模拟初始5秒后再显示
+        splash.showMessage('等待界面显示', Qt.AlignHCenter | Qt.AlignBottom, Qt.white)
+        QTimer.singleShot(3000, lambda: (
+            splash.showMessage('初始化完成', Qt.AlignHCenter | Qt.AlignBottom, Qt.white), app.w.show(),
+            splash.finish(app.w)))
+
+
+    # 模拟耗时5秒。但是不能用sleep
+    # 可以使用子线程加载耗时的数据
+    # 主线程中循环设置UI可以配合QApplication.instance().processEvents()
+    splash.showMessage('等待创建界面', Qt.AlignHCenter | Qt.AlignBottom, Qt.white)
+    QTimer.singleShot(3000, createWindow)
+
+    sys.exit(app.exec_())

QSplashScreen/README.md

@@ -0,0 +1,11 @@
+# QSplashScreen
+
+- 目录
+  - [启动画面动画](#1启动画面动画)
+
+## 1、启动画面动画
+[运行 GifSplashScreen.py](GifSplashScreen.py)
+
+结合 `QMovie` 的 `frameChanged` 信号 不停地设置新的pixmap图片
+
+![GifSplashScreen](ScreenShot/GifSplashScreen.gif)

README.md

@@ -126,6 +126,8 @@ https://pyqt.site 论坛是专门针对PyQt5学习和提升开设的网站，分
     - [百分比进度条](QProgressBar/PercentProgressBar.py)
     - [Metro进度条](QProgressBar/MetroCircleProgress.py)
     - [水波纹进度条](QProgressBar/WaterProgressBar.py)
+  - [QSplashScreen](QSplashScreen)
+    - [启动画面动画](QSplashScreen/GifSplashScreen.py)
   - [QOpenGLWidget](QOpenGLWidget)
   - [QWebView](QWebView)
     - [梦幻树](QWebView/DreamTree.py)