protected override GeometryList CreateSelectionGeometry(MagicWandToolChanges changes, AsyncSelectionToolCreateGeometryContext context, CancellationToken cancellationToken)
{
GeometryList list;
Result <BitVector2D> lazyBaseStencil;
IRenderer <ColorBgra> sampleSource = ((MagicWandToolCreateGeometryContext)context).SampleSource;
byte x = (byte)Math.Round((double)(changes.Tolerance * 255.0), MidpointRounding.AwayFromZero);
byte tolerance = ByteUtil.FastScale(x, x);
PointInt32 pt = changes.OriginPointInt32;
if (!sampleSource.Bounds <ColorBgra>().Contains(pt))
{
switch (changes.SelectionCombineMode)
{
case SelectionCombineMode.Replace:
case SelectionCombineMode.Intersect:
return(new GeometryList());
case SelectionCombineMode.Union:
case SelectionCombineMode.Exclude:
case SelectionCombineMode.Xor:
return(changes.BaseGeometry);
}
throw ExceptionUtil.InvalidEnumArgumentException <SelectionCombineMode>(changes.SelectionCombineMode, "changes.SelectionCombineMode");
}
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
Func <bool> isCancellationRequestedFn = () => cancellationToken.IsCancellationRequested;
ColorBgra basis = sampleSource.GetPointSlow(pt);
int width = ((sampleSource.Width + 0x1f) / 0x20) * 0x20;
BitVector2D newStencil = new BitVector2D(width, sampleSource.Height);
BitVector2DStruct newStencilWrapper = new BitVector2DStruct(newStencil);
if (((changes.SelectionCombineMode != SelectionCombineMode.Replace) && sampleSource.Bounds <ColorBgra>().Contains(changes.BaseGeometry.Bounds.Int32Bound)) && changes.BaseGeometry.IsPixelated)
{
lazyBaseStencil = LazyResult.New <BitVector2D>(() => PixelatedGeometryListToBitVector2D(changes.BaseGeometry, newStencil.Width, newStencil.Height, cancellationToken), LazyThreadSafetyMode.ExecutionAndPublication, new SingleUseCriticalSection());
ThreadPool.QueueUserWorkItem(delegate(object _) {
lazyBaseStencil.EnsureEvaluated();
});
}
else
{
lazyBaseStencil = null;
}
FloodMode floodMode = changes.FloodMode;
if (floodMode != FloodMode.Local)
{
if (floodMode != FloodMode.Global)
{
throw ExceptionUtil.InvalidEnumArgumentException <FloodMode>(changes.FloodMode, "changes.FloodMode");
}
}
else
{
RectInt32 num4;
FloodFillAlgorithm.FillStencilFromPoint <BitVector2DStruct>(sampleSource, newStencilWrapper, pt, tolerance, isCancellationRequestedFn, out num4);
goto Label_0293;
}
TileMathHelper tileMathHelper = new TileMathHelper(sampleSource.Width, sampleSource.Height, 7);
Work.ParallelForEach <PointInt32>(WaitType.Pumping, tileMathHelper.EnumerateTileOffsets(), delegate(PointInt32 tileOffset) {
if (!cancellationToken.IsCancellationRequested)
{
RectInt32 clipRect = tileMathHelper.GetTileSourceRect(tileOffset);
FloodFillAlgorithm.FillStencilByColor <BitVector2DStruct>(sampleSource, newStencilWrapper, basis, tolerance, isCancellationRequestedFn, clipRect);
}
}, WorkItemQueuePriority.Normal, null);
Label_0293:
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
if (changes.SelectionCombineMode == SelectionCombineMode.Replace)
{
list = GeometryList.FromStencil <BitVector2DStruct>(newStencilWrapper, cancellationToken);
}
else if (lazyBaseStencil == null)
{
GeometryList rhs = GeometryList.FromStencil <BitVector2DStruct>(newStencilWrapper, cancellationToken);
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
list = GeometryList.Combine(changes.BaseGeometry, changes.SelectionCombineMode.ToGeometryCombineMode(), rhs);
}
else
{
BitVector2D other = lazyBaseStencil.Value;
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
switch (changes.SelectionCombineMode)
{
case SelectionCombineMode.Replace:
throw new InternalErrorException();
case SelectionCombineMode.Union:
newStencil.Or(other);
break;
case SelectionCombineMode.Exclude:
newStencil.Invert();
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
newStencil.And(other);
break;
case SelectionCombineMode.Intersect:
newStencil.And(other);
break;
case SelectionCombineMode.Xor:
newStencil.Xor(other);
break;
default:
throw ExceptionUtil.InvalidEnumArgumentException <SelectionCombineMode>(changes.SelectionCombineMode, "changes.SelectionCombineMode");
}
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
list = GeometryList.FromStencil <BitVector2DStruct>(newStencilWrapper, cancellationToken);
}
if (cancellationToken.IsCancellationRequested)
{
return(null);
}
list.Freeze();
return(list);
}
public override HistoryMemento OnExecute(IHistoryWorkspace historyWorkspace)
{
if (historyWorkspace.Selection.IsEmpty)
{
return(null);
}
SelectionHistoryMemento memento = new SelectionHistoryMemento(StaticName, StaticImage, historyWorkspace);
GeometryList selectedPath = historyWorkspace.Selection.GetCachedGeometryList();
SelectionRenderingQuality selectionRenderingQuality = historyWorkspace.ToolSettings.Selection.RenderingQuality.Value;
Result <IReadOnlyList <RectInt32> > selectedPathScansLazy = historyWorkspace.Selection.GetCachedLazyClippingMaskScans();
RectInt32 documentBounds = historyWorkspace.Document.Bounds();
Func <GeometryList> invertedPathFn = delegate {
if ((selectionRenderingQuality == SelectionRenderingQuality.Aliased) || selectedPath.IsPixelated)
{
GeometryList list2 = GeometryList.FromNonOverlappingSortedScans(selectedPathScansLazy.Value);
list2.AddRect(documentBounds);
SegmentedList <RectInt32> scans = new SegmentedList <RectInt32>();
foreach (RectInt32 num in list2.EnumerateInteriorScans())
{
if (documentBounds.Contains(num))
{
scans.Add(num);
}
else if (documentBounds.IntersectsWith(num))
{
scans.Add(RectInt32.Intersect(documentBounds, num));
}
}
return(GeometryList.FromNonOverlappingScans(scans));
}
GeometryList lhs = documentBounds.Contains(selectedPath.Bounds) ? selectedPath : GeometryList.ClipToRect(selectedPath, documentBounds);
return(GeometryList.Combine(lhs, GeometryCombineMode.Xor, documentBounds));
};
ThreadTask <GeometryList> task = historyWorkspace.TaskManager.StartNewThreadTask <GeometryList>(task => invertedPathFn(), ApartmentState.MTA);
ManualResetEvent taskFinishedEvent = new ManualResetEvent(false);
task.ResultAsync <GeometryList>().Receive(delegate(Result <GeometryList> r) {
taskFinishedEvent.Set();
}).Observe();
if (!taskFinishedEvent.WaitOne(0x3e8))
{
using (TaskProgressDialog dialog = new TaskProgressDialog())
{
dialog.Task = task;
dialog.Text = StaticName;
dialog.Icon = StaticImage.Reference.ToIcon();
dialog.HeaderText = PdnResources.GetString("SaveConfigDialog.Finishing.Text");
dialog.ShowDialog(historyWorkspace.Window);
}
}
Result <GeometryList> taskResult = task.TaskResult;
if (taskResult.IsError)
{
if (taskResult.Error is OutOfMemoryException)
{
throw new OutOfMemoryException(null, taskResult.Error);
}
throw new AggregateException(null, taskResult.Error);
}
GeometryList geometry = task.TaskResult.Value;
base.EnterCriticalRegion();
using (historyWorkspace.Selection.UseChangeScope())
{
historyWorkspace.Selection.Reset();
geometry.Freeze();
historyWorkspace.Selection.SetContinuation(geometry, SelectionCombineMode.Replace);
historyWorkspace.Selection.CommitContinuation();
}
return(memento);
}