46 lines
1.6 KiB
Python
46 lines
1.6 KiB
Python
#!/usr/bin/python3
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from PyQt6.QtCore import Qt
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from PyQt6.QtGui import QMouseEvent
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from PyQt6.QtWidgets import QSlider, QStyle, QStyleOptionSlider
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class TrackProgressSlider(QSlider):
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def __init__(self, *args, **kwargs):
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super().__init__(*args, **kwargs)
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self.dragged = False
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option = QStyleOptionSlider()
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style = self.style()
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self.handle_width = style.pixelMetric(QStyle.PixelMetric.PM_SliderThickness, option, self)
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self.sliderPressed.connect(self.on_press)
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self.sliderReleased.connect(self.on_release)
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def mousePressEvent(self, event: QMouseEvent):
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# we need a custom press event bc. PyQt doesn't set the slider position when clicked
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if event.button() == Qt.MouseButton.LeftButton:
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event.accept()
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x = event.pos().x()
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# old value calculation:
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# value = self.maximum() * x // self.width()
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# but we need that new calculation because the handle width is limiting the range, and we need to set
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# the slider handle's center to the click position, not to the start of the handle
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# (self.width() - self.handle_width) calculates the usable width and
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# (x - self.handle_width // 2) offsets the position by minus half of the handle width
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value = self.maximum() * (x - self.handle_width // 2) // (self.width() - self.handle_width)
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self.setValue(value)
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return super().mousePressEvent(event)
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def on_press(self):
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self.dragged = True
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def on_release(self):
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self.dragged = False
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