replace ScaledScrollBar with BigScrollBar

step 3 - connect wheel event

src/ui/bigtext/BigScrollBar.py

@@ -1,5 +1,6 @@
 import enum
 
+from PySide6.QtGui import QWheelEvent
 from PySide6.QtWidgets import QWidget, QStylePainter, QStyle, QStyleOptionSlider, QSlider, QAbstractSlider
 from PySide6.QtCore import Qt, QSize, QEvent, QRect, QPoint, Signal
 
@@ -46,7 +47,7 @@ class BigScrollBar(QWidget):
     def paintEvent(self, event):
         p = QStylePainter(self)
         o = self.style_options()
-        print(f"style_options: sliderPosition: {o.sliderPosition}")
+        # print(f"style_options: sliderPosition: {o.sliderPosition}")
         p.drawComplexControl(QStyle.ComplexControl.CC_ScrollBar, o)
 
     def style_options(self) -> QStyleOptionSlider:
@@ -67,8 +68,8 @@ class BigScrollBar(QWidget):
         o.minimum = self.minimun * t
         o.maximum = self.maximum * t
         o.sliderPosition = int(self.value * t)
-        print(f"t={t}")
-        print(f"({self.minimun}, {self.value}, {self.maximum}) -> ({o.minimum},{o.sliderPosition},{o.maximum})")
+        # print(f"t={t}")
+        # print(f"({self.minimun}, {self.value}, {self.maximum}) -> ({o.minimum},{o.sliderPosition},{o.maximum})")
 
         return o
 
@@ -114,7 +115,7 @@ class BigScrollBar(QWidget):
 
         self.pressedControl = self.style().hitTestComplexControl(QStyle.ComplexControl.CC_ScrollBar, style_options,
                                                                  event.position().toPoint(), self)
-        print(f"pressedControl {self.pressedControl}")
+        # print(f"pressedControl {self.pressedControl}")
 
         sr: QRect = self.style().subControlRect(QStyle.ComplexControl.CC_ScrollBar, style_options,
                                                 QStyle.SubControl.SC_ScrollBarSlider, self)
@@ -140,7 +141,6 @@ class BigScrollBar(QWidget):
         # self.repaint(self.style().subControlRect(QStyle.ComplexControl.CC_ScrollBar, style_options, self.pressedControl))
 
     def activateControl(self, control):
-        action = QAbstractSlider.SliderAction.SliderNoAction
         match control:
             case QStyle.SubControl.SC_ScrollBarAddPage:
                 self.scroll_event.emit(self.ScrollEvent.PageDown)
@@ -177,6 +177,18 @@ class BigScrollBar(QWidget):
             # print(f"move to value: {new_position}")
             self.set_value(new_position)
 
+    def wheelEvent(self, event: QWheelEvent):
+        event.ignore()
+
+        # when using a touchpad we can have simultaneous horizontal and vertical movement
+        horizontal = abs(event.angleDelta().x()) > abs(event.angleDelta().y())
+        if horizontal:
+            return
+
+        scroll_event = self.ScrollEvent.LinesDown if event.angleDelta().y() < 0 else self.ScrollEvent.LinesUp
+        self.scroll_event.emit(scroll_event)
+
+
     def pixelPosToRangeValue(self, pos: int):
         opt: QStyleOptionSlider = self.style_options()