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153 lines
5.4 KiB
C#
153 lines
5.4 KiB
C#
// Copyright (c) ppy Pty Ltd <contact@ppy.sh>. Licensed under the MIT Licence.
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// See the LICENCE file in the repository root for full licence text.
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using System;
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using osu.Framework.Allocation;
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using osu.Framework.Bindables;
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using osu.Framework.Graphics;
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using osu.Game.Beatmaps.ControlPoints;
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using osu.Game.Graphics.UserInterfaceV2;
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using osu.Game.Overlays.Settings;
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namespace osu.Game.Screens.Edit.Timing
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{
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internal class TimingSection : Section<TimingControlPoint>
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{
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private SettingsSlider<double> bpmSlider;
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private LabelledTimeSignature timeSignature;
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private BPMTextBox bpmTextEntry;
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[BackgroundDependencyLoader]
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private void load()
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{
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Flow.AddRange(new Drawable[]
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{
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bpmTextEntry = new BPMTextBox(),
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bpmSlider = new BPMSlider(),
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timeSignature = new LabelledTimeSignature
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{
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Label = "Time Signature"
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}
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});
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}
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protected override void OnControlPointChanged(ValueChangedEvent<TimingControlPoint> point)
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{
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if (point.NewValue != null)
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{
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bpmSlider.Current = point.NewValue.BeatLengthBindable;
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bpmSlider.Current.BindValueChanged(_ => ChangeHandler?.SaveState());
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bpmTextEntry.Bindable = point.NewValue.BeatLengthBindable;
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// no need to hook change handler here as it's the same bindable as above
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timeSignature.Current = point.NewValue.TimeSignatureBindable;
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timeSignature.Current.BindValueChanged(_ => ChangeHandler?.SaveState());
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}
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}
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protected override TimingControlPoint CreatePoint()
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{
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var reference = Beatmap.ControlPointInfo.TimingPointAt(SelectedGroup.Value.Time);
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return new TimingControlPoint
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{
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BeatLength = reference.BeatLength,
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TimeSignature = reference.TimeSignature
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};
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}
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private class BPMTextBox : LabelledTextBox
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{
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private readonly BindableNumber<double> beatLengthBindable = new TimingControlPoint().BeatLengthBindable;
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public BPMTextBox()
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{
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Label = "BPM";
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OnCommit += (val, isNew) =>
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{
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if (!isNew) return;
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try
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{
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if (double.TryParse(Current.Value, out double doubleVal) && doubleVal > 0)
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beatLengthBindable.Value = beatLengthToBpm(doubleVal);
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}
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catch
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{
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// TriggerChange below will restore the previous text value on failure.
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}
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// This is run regardless of parsing success as the parsed number may not actually trigger a change
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// due to bindable clamping. Even in such a case we want to update the textbox to a sane visual state.
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beatLengthBindable.TriggerChange();
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};
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beatLengthBindable.BindValueChanged(val =>
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{
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Current.Value = beatLengthToBpm(val.NewValue).ToString("N2");
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}, true);
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}
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public Bindable<double> Bindable
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{
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get => beatLengthBindable;
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set
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{
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// incoming will be beat length, not bpm
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beatLengthBindable.UnbindBindings();
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beatLengthBindable.BindTo(value);
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}
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}
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}
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private class BPMSlider : SettingsSlider<double>
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{
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private const double sane_minimum = 60;
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private const double sane_maximum = 240;
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private readonly BindableNumber<double> beatLengthBindable = new TimingControlPoint().BeatLengthBindable;
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private readonly BindableDouble bpmBindable = new BindableDouble(60000 / TimingControlPoint.DEFAULT_BEAT_LENGTH)
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{
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MinValue = sane_minimum,
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MaxValue = sane_maximum,
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};
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public BPMSlider()
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{
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beatLengthBindable.BindValueChanged(beatLength => updateCurrent(beatLengthToBpm(beatLength.NewValue)), true);
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bpmBindable.BindValueChanged(bpm => beatLengthBindable.Value = beatLengthToBpm(bpm.NewValue));
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base.Current = bpmBindable;
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TransferValueOnCommit = true;
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}
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public override Bindable<double> Current
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{
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get => base.Current;
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set
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{
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// incoming will be beat length, not bpm
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beatLengthBindable.UnbindBindings();
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beatLengthBindable.BindTo(value);
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}
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}
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private void updateCurrent(double newValue)
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{
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// we use a more sane range for the slider display unless overridden by the user.
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// if a value comes in outside our range, we should expand temporarily.
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bpmBindable.MinValue = Math.Min(newValue, sane_minimum);
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bpmBindable.MaxValue = Math.Max(newValue, sane_maximum);
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bpmBindable.Value = newValue;
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}
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}
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private static double beatLengthToBpm(double beatLength) => 60000 / beatLength;
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}
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}
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