Добавить протокол Altera Logic и общие клиенты прошивки

python/altera_logic/plot_scroll.py

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+"""Qt presentation port: wheel pans X; Ctrl+wheel pans Y, never zooms."""
+from PySide6.QtCore import Qt, Signal
+from PySide6.QtWidgets import QScrollArea
+
+
+class PlotScrollArea(QScrollArea):
+    user_scrolled = Signal(str)
+
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self._remainder = {'x': 0., 'y': 0.}
+
+    def wheelEvent(self, event):
+        axis = 'y' if event.modifiers() & Qt.KeyboardModifier.ControlModifier else 'x'
+        bar = self.verticalScrollBar() if axis == 'y' else self.horizontalScrollBar()
+        pixels, angle = event.pixelDelta(), event.angleDelta()
+        if not pixels.isNull():
+            delta = pixels.y() if pixels.y() else pixels.x()
+        else:
+            delta = (angle.y() if angle.y() else angle.x()) / 120. * 60.
+        self._remainder[axis] -= delta
+        movement = int(self._remainder[axis])
+        self._remainder[axis] -= movement
+        if delta:
+            self.user_scrolled.emit(axis)
+            bar.setValue(bar.value()+movement)
+        event.accept()