1 files changed, 69 insertions, 0 deletions
diff --git a/examples/widgetbinding/wigglywidget.py b/examples/widgetbinding/wigglywidget.py
new file mode 100644
index 000000000..3362eab6b
--- /dev/null
+++ b/examples/widgetbinding/wigglywidget.py
@@ -0,0 +1,69 @@
+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
+
+from PySide6.QtCore import QBasicTimer, Property
+from PySide6.QtGui import QColor, QFontMetrics, QPainter, QPalette
+from PySide6.QtWidgets import QWidget
+
+
+class WigglyWidget(QWidget):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self._step = 0
+        self._text = ""
+        self.setBackgroundRole(QPalette.Midlight)
+        self.setAutoFillBackground(True)
+
+        new_font = self.font()
+        new_font.setPointSize(new_font.pointSize() + 20)
+        self.setFont(new_font)
+        self._timer = QBasicTimer()
+
+    def isRunning(self):
+        return self._timer.isActive()
+
+    def setRunning(self, r):
+        if r == self.isRunning():
+            return
+        if r:
+            self._timer.start(60, self)
+        else:
+            self._timer.stop()
+
+    def paintEvent(self, event):
+        if not self._text:
+            return
+
+        sineTable = [0, 38, 71, 92, 100, 92, 71, 38, 0, -38, -71, -92, -100,
+                     -92, -71, -38]
+
+        metrics = QFontMetrics(self.font())
+        x = (self.width() - metrics.horizontalAdvance(self.text)) / 2
+        y = (self.height() + metrics.ascent() - metrics.descent()) / 2
+        color = QColor()
+
+        with QPainter(self) as painter:
+            for i in range(len(self.text)):
+                index = (self._step + i) % 16
+                color.setHsv((15 - index) * 16, 255, 191)
+                painter.setPen(color)
+                dy = (sineTable[index] * metrics.height()) / 400
+                c = self._text[i]
+                painter.drawText(x, y - dy, str(c))
+                x += metrics.horizontalAdvance(c)
+
+    def timerEvent(self, event):
+        if event.timerId() == self._timer.timerId():
+            self._step += 1
+            self.update()
+        else:
+            QWidget.timerEvent(event)
+
+    def text(self):
+        return self._text
+
+    def setText(self, text):
+        self._text = text
+
+    running = Property(bool, isRunning, setRunning)
+    text = Property(str, text, setText)