private void PreviewPlay()
{
if (_previewContext == null)
{
_previewContext = VixenSystem.Contexts.CreatePreviewContext("Effect Preview");
_previewContext.Sequence = _sequenceEditorForm.Sequence;
_previewContext.Start();
}
else if (!_previewContext.IsRunning)
{
Logging.Warn("Preview context was not running!");
_previewContext.Start();
}
IEnumerable <EffectNode> orderedNodes = Elements.Select(x => x.EffectNode).OrderBy(x => x.StartTime).ToList();
if (orderedNodes.Any())
{
TimeSpan startOffset = orderedNodes.First().StartTime;
TimeSpan duration = orderedNodes.Last().EndTime - startOffset;
List <EffectNode> nodesToPlay =
orderedNodes.Select(effectNode => new EffectNode(effectNode.Effect, effectNode.StartTime - startOffset)).ToList();
_previewContext.Execute(nodesToPlay);
_previewLoopTimer.Interval = duration.TotalMilliseconds;
_previewLoopTimer.Start();
}
}
/// <summary>
/// 初始化预览
/// </summary>
void InitPreview()
{
_previewContext = new PreviewContext(this, lv);
lv.FocusedItemChanged += (s, e) =>
{
_previewContext.UpdatePreview(lv.FocusedItem?.Resource);
};
}
public PreviewContext CreatePreviewContext(string name)
{
if (string.IsNullOrEmpty(name))
{
throw new ArgumentNullException("name");
}
var context = new PreviewContext(name);
_AddContext(context);
return(context);
}
public static UserAssetPreviewModel Preview(byte[] doc)
{
XDocument document = new MemoryStream(doc).Using(XDocument.Load);
PreviewContext ctx = new PreviewContext(document);
foreach (var item in ctx.elements)
{
ctx.GetEntity(item.Key);
}
return(new UserAssetPreviewModel {
Lines = ctx.previews.Values.ToMList()
});
}
protected virtual Object EvaluatePreview(PreviewContext previewContext)
{
return(EvaluateObject());
}
protected override object EvaluatePreview(PreviewContext previewContext)
{
return(base.EvaluatePreview(previewContext));
}
