51 lines
1.9 KiB
Python
51 lines
1.9 KiB
Python
# Copyright 2022 (c) Anna Schumaker.
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"""A Gtk.Scale configured for position tracking seeking."""
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from gi.repository import GObject
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from gi.repository import Gtk
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from gi.repository import Gst
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class Scale(Gtk.Scale):
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"""A Gtk.Scale configured for our application."""
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def __init__(self, **kwargs):
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"""Initialize our Scale."""
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super().__init__(margin_start=45, margin_end=45, draw_value=True,
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hexpand=True, **kwargs)
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self._adjustment = Gtk.Adjustment.new(value=0, lower=0, upper=1,
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step_increment=5*Gst.SECOND,
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page_increment=30*Gst.SECOND,
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page_size=0)
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self.set_adjustment(self._adjustment)
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self.set_format_value_func(self.format_value)
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def format_value(self, scale: Gtk.Scale, value: float) -> str:
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"""Format the position and duration values."""
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duration = round(self.duration * Gst.USECOND / Gst.SECOND)
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position = round(value * Gst.USECOND / Gst.SECOND)
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remaining = duration - position
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(p_m, p_s) = divmod(position, 60)
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(r_m, r_s) = divmod(remaining, 60)
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return f"{p_m:02}:{p_s:02} / {r_m:02}:{r_s:02}"
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@GObject.Property(type=float)
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def duration(self) -> float:
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"""Get the duration of the current track."""
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return self._adjustment.get_upper()
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@duration.setter
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def duration(self, newval: float) -> None:
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"""Set the duration of the current track."""
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self.set_range(0, max(newval, 1))
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self.emit("value-changed")
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@GObject.Property(type=float)
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def position(self) -> float:
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"""Get the position of the current track."""
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return self.get_value()
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@position.setter
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def position(self, newval: float) -> None:
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"""Set the position of the current track."""
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self.set_value(newval)
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