/
SelectionToMask_Change.cs
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/
SelectionToMask_Change.cs
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using PixiEditor.ChangeableDocument.Changeables.Interfaces;
using PixiEditor.ChangeableDocument.Changes.Drawing.FloodFill;
using PixiEditor.ChangeableDocument.Enums;
using PixiEditor.DrawingApi.Core.ColorsImpl;
using PixiEditor.DrawingApi.Core.Numerics;
using PixiEditor.DrawingApi.Core.Surface.PaintImpl;
using PixiEditor.DrawingApi.Core.Surface.Vector;
using BlendMode = PixiEditor.DrawingApi.Core.Surface.BlendMode;
namespace PixiEditor.ChangeableDocument.Changes.Drawing;
internal class SelectionToMask_Change : Change
{
private readonly SelectionMode mode;
private readonly Guid targetMember;
private Changeables.Selection? selection;
private CommittedChunkStorage? chunkStorage = null;
[GenerateMakeChangeAction]
public SelectionToMask_Change(Guid targetMember, SelectionMode mode)
{
this.targetMember = targetMember;
this.mode = mode;
}
public override bool InitializeAndValidate(Document target)
{
selection = target.Selection;
return true;
}
public override OneOf<None, IChangeInfo, List<IChangeInfo>> Apply(Document target, bool firstApply, out bool ignoreInUndo)
{
var image = DrawingChangeHelper.GetTargetImageOrThrow(target, targetMember, true);
VectorPath? selection = target.Selection.SelectionPath.IsEmpty ? null : target.Selection.SelectionPath;
HashSet<Guid> membersToReference = new();
membersToReference.Add(targetMember);
var blendMode = mode switch
{
SelectionMode.New => BlendMode.DstATop,
SelectionMode.Add => BlendMode.Plus,
SelectionMode.Subtract => BlendMode.DstOut,
SelectionMode.Intersect => BlendMode.SrcIn
};
image.SetBlendMode(blendMode);
var selectionImage = FloodFillHelper.FillSelection(target, selection!);
image.EnqueueDrawImage(new VecI(0, 0), selectionImage);
var affArea = image.FindAffectedArea();
chunkStorage = new CommittedChunkStorage(image, affArea.Chunks);
image.CommitChanges();
ignoreInUndo = false;
return DrawingChangeHelper.CreateAreaChangeInfo(targetMember, affArea, true);
}
public override OneOf<None, IChangeInfo, List<IChangeInfo>> Revert(Document target)
{
var affArea = DrawingChangeHelper.ApplyStoredChunksDisposeAndSetToNull(target, targetMember, true, ref chunkStorage);
return DrawingChangeHelper.CreateAreaChangeInfo(targetMember, affArea, true);
}
}