public SequencerViewModel(Timeline model)
{
this.model = model;
ActionManager = new GuiLabs.Undo.ActionManager();
SelectedBlocks = new ObservableCollection <BlockViewModel>();
SelectionData = new SelectionProperties(this);
Tracks = model.Tracks.Select(g => new TrackViewModel(this, g));
MusicSegments = model.MusicSegments.Select(seg => new MusicSegmentViewModel(this, seg));
AllBlocks = model.Blocks.Select(b => BlockViewModel.FromModel(this, b));
if (Tracks.Count > 0)
{
SelectedTrack = Tracks[0];
}
ActiveMusicSegment = MusicSegments[model.DefaultMusicSegment.GetIndex()];
Playback = new PlaybackViewModel(this);
Visualization = new VisualizationViewModel(this);
Notes = new NotesViewModel(this);
if (model.MusicFileName != null)
{
Playback.LoadFileAsync(model.MusicFileName).Forget();
}
Action <BlockViewModel> fn_SubscribeToBlock = bvm => ForwardPropertyEvents(nameof(bvm.EndTimeOccupied), bvm, nameof(TimelineLength));
AllBlocks.ToList().ForEach(fn_SubscribeToBlock);
AllBlocks.CollectionChanged += (_, e) =>
{
if (e.NewItems != null)
{
e.NewItems.Cast <BlockViewModel>().ToList().ForEach(fn_SubscribeToBlock);
}
Notify(nameof(TimelineLength));
};
ForwardPropertyEvents(nameof(PipetteTarget), this, nameof(IsPipetteActive));
ForwardPropertyEvents(nameof(CursorPosition), this,
nameof(CursorPixelPosition), nameof(CursorPixelPositionOnViewport));
ForwardPropertyEvents(nameof(TimePixelScale), this,
nameof(CursorPixelPosition), nameof(CursorPixelPositionOnViewport),
nameof(CurrentViewLeftPositionTime), nameof(CurrentViewRightPositionTime),
nameof(TimelineWidth), nameof(GridInterval));
ForwardPropertyEvents(nameof(ActiveMusicSegment), this,
nameof(GridInterval));
ForwardPropertyEvents(nameof(Playback.MusicDuration), Playback, nameof(TimelineLength));
ForwardPropertyEvents(nameof(TimelineLength), this, nameof(TimelineWidth));
ForwardCollectionEvents(SelectedBlocks,
nameof(CanConvertToColor), nameof(CanConvertToRamp),
nameof(CanConvertToAutoDeduced), nameof(ConvertAutoDeduceGestureText));
Tracks.CollectionChanged += (_, e) =>
{
foreach (var b in AllBlocks)
{
b.OnTracksCollectionChanged();
}
};
// Disable pipette whenever the selection is modified.
SelectedBlocks.CollectionChanged += (_, __) => PipetteTarget = null;
}
public void InsertBlock(string type)
{
// inherit color and tracks from previous block, if applicable
GloColor prevColor = GloColor.White;
Track[] prevTracks = { _selectedTrack.GetModel() };
if (EnableSmartInsert)
{
Func <BlockViewModel, bool> fnIsBlockApplicable =
(bl => bl.StartTime < CursorPosition && (bl is ColorBlockViewModel || bl is RampBlockViewModel));
var prevBlocks = ((IEnumerable <BlockViewModel>)_selectedTrack.Blocks).Where(fnIsBlockApplicable);
if (prevBlocks.Any())
{
BlockViewModel prevBlock = prevBlocks.MaxBy(bl => bl.EndTimeOccupied);
// inherit color
if (prevBlock is ColorBlockViewModel)
{
prevColor = ((ColorBlockViewModel)prevBlock).GetModel().Color;
}
else
{
prevColor = ((RampBlockViewModel)prevBlock).GetModel().EndColor;
}
// inherit tracks, but only if the last block on the selected track is also the last block on all other tracks of the block
bool lastOfAllTracks = prevBlock.GetModel().Tracks.All(t => t.Blocks
.Select(bl => BlockViewModel.FromModel(this, bl))
.Where(fnIsBlockApplicable)
.MaxBy(bl => bl.EndTimeOccupied)
== prevBlock);
if (lastOfAllTracks)
{
prevTracks = prevBlock.GetModel().Tracks.ToArray();
}
}
}
Block b;
switch (type)
{
case "color":
b = new ColorBlock(model, prevTracks)
{
Color = prevColor
};
break;
case "ramp":
b = new RampBlock(model, prevTracks)
{
StartColor = prevColor,
EndColor = (prevColor == GloColor.White ? GloColor.Black : GloColor.White)
};
break;
default:
throw new ArgumentException("unsupported block type " + type);
}
b.SegmentContext = ActiveMusicSegment.GetModel();
b.StartTime = CursorPosition;
b.Duration = GridInterval;
ActionManager.RecordAdd(model.Blocks, b);
}
protected GroupBlockViewModel(SequencerViewModel sequencer, Model.GroupBlock model, string typeLabel)
: base(sequencer, model, typeLabel)
{
this.model = model;
_children = model.Children.Select(b => BlockViewModel.FromModel(sequencer, b));
}