Data commit

Task/Animation/Python/animation-1.py

@@ -0,0 +1,44 @@
+#!/usr/bin/env python3
+import sys
+
+from PyQt5.QtCore import QBasicTimer, Qt
+from PyQt5.QtGui import QFont
+from PyQt5.QtWidgets import QApplication, QLabel
+
+
+class Marquee(QLabel):
+    def __init__(self, **kwargs):
+        super().__init__(**kwargs)
+        self.right_to_left_direction = True
+        self.initUI()
+        self.timer = QBasicTimer()
+        self.timer.start(80, self)
+
+    def initUI(self):
+        self.setWindowFlags(Qt.FramelessWindowHint)
+        self.setAttribute(Qt.WA_TranslucentBackground)
+        self.setText("Hello World! ")
+        self.setFont(QFont(None, 50, QFont.Bold))
+        # make more irritating for the authenticity with <marquee> element
+        self.setStyleSheet("QLabel {color: cyan; }")
+
+    def timerEvent(self, event):
+        i = 1 if self.right_to_left_direction else -1
+        self.setText(self.text()[i:] + self.text()[:i])  # rotate
+
+    def mouseReleaseEvent(self, event):  # change direction on mouse release
+        self.right_to_left_direction = not self.right_to_left_direction
+
+    def keyPressEvent(self, event):  # exit on Esc
+        if event.key() == Qt.Key_Escape:
+            self.close()
+
+
+app = QApplication(sys.argv)
+w = Marquee()
+# center widget on the screen
+w.adjustSize()  # update w.rect() now
+w.move(QApplication.instance().desktop().screen().rect().center()
+       - w.rect().center())
+w.show()
+sys.exit(app.exec())