merge: integrate refactor/menubar-reorg

Brings in the Plate menu reorganization, Database-mode drag-and-drop
open, the SavedNestsForm look fixes and the Irregular block-fill work
budget fix.

Conflicts:
- MainForm.Designer.cs: keep the branch's Plate menu order (Arrange
  submenu, View in CAD last) and add master's Plan Cutting item ahead
  of the lead-in commands.
- SavedNestsForm.cs: keep master's browser rewrite (details, preview,
  columns) and apply the branch's intent to it: open maximized with
  MaximizedBounds clear of the taskbar, the lighter grid palette on all
  three grids, and B/KB/MB/GB file sizes.

OpenNest.Engine.Tests/NestingEngines/IrregularBlockTests.cs

@@ -19,7 +19,7 @@ public class IrregularBlockTests
         var job = Job(new[] { Part("ell", LShape(9, 7, 3), quantity, RotationPolicy.Automatic) },
             new[] { Stock("sheet", 40, 60, spacing: 0.25) });
         var types = PartCatalog.Build(job);
-        using var catalog = new BlockCatalog(0.25, types, NoPairs);
+        using var catalog = new BlockCatalog(0.25, types, NoPairs, new WorkCounter(), long.MaxValue);
         Assert.Empty(catalog.Get(types[0], quantity, new Box(0, 0, 60, 40), CancellationToken.None));
         Assert.Equal(0, catalog.PreparationCount);
     }
@@ -31,7 +31,7 @@ public class IrregularBlockTests
             new[] { Stock("sheet", 40, 60, spacing: 0.25) });
         var types = PartCatalog.Build(job);
         var original = types[0].Orientations.ToArray();
-        using var catalog = new BlockCatalog(0.25, types, NoPairs);
+        using var catalog = new BlockCatalog(0.25, types, NoPairs, new WorkCounter(), long.MaxValue);
         var block = catalog.Get(types[0], 7, new Box(0, 0, 60, 40), CancellationToken.None);
         Assert.Equal(7, block.Count);
         Assert.Equal(original, types[0].Orientations);
@@ -79,7 +79,7 @@ public class IrregularBlockTests
         var job = Job(new[] { Part("ell", LShape(9, 7, 3), 44, RotationPolicy.Automatic) }, new[] { stock });
         var types = PartCatalog.Build(job);
         var pairs = PairCatalog.Build(types, 0.25, 40, 30, CancellationToken.None);
-        using var blocks = new BlockCatalog(0.25, types, pairs);
+        using var blocks = new BlockCatalog(0.25, types, pairs, new WorkCounter(), long.MaxValue);
         var before = new FrontierPacker(types, new NoFitCache(0.25), pairs, stock,
             PackAxis.X, 1, new WorkCounter()).Fill(new[] { 44 }, CancellationToken.None);
         var after = new FrontierPacker(types, new NoFitCache(0.25), pairs, stock,
@@ -97,7 +97,7 @@ public class IrregularBlockTests
         var stock = Stock("sheet", 3, 3, spacing: 0.25);
         var job = Job(new[] { Rectangle("box", 2, 2, 3) }, new[] { stock });
         var types = PartCatalog.Build(job);
-        using var blocks = new BlockCatalog(0.25, types, NoPairs);
+        using var blocks = new BlockCatalog(0.25, types, NoPairs, new WorkCounter(), long.MaxValue);
         Assert.Empty(blocks.Get(types[0], 3, new Box(0, 0, 3, 3), CancellationToken.None));
         Assert.Equal(0, blocks.PreparationCount);
         var fill = new FrontierPacker(types, new NoFitCache(0.25), NoPairs, stock,
@@ -158,7 +158,7 @@ public class IrregularBlockTests
     {
         var job = Job(new[] { Rectangle("box", 2, 2, 3) }, new[] { Stock("sheet", 10, 20) });
         var types = PartCatalog.Build(job);
-        using var catalog = new BlockCatalog(0.25, types, NoPairs);
+        using var catalog = new BlockCatalog(0.25, types, NoPairs, new WorkCounter(), long.MaxValue);
         Assert.Throws<OperationCanceledException>(() =>
             catalog.Get(types[0], 3, new Box(0, 0, 20, 10), new CancellationToken(true)));
     }

OpenNest.Engine/NestingEngines/Irregular/BlockCatalog.cs

@@ -17,6 +17,8 @@ namespace OpenNest.Engine.NestingEngines.Irregular;
 internal sealed class BlockCatalog : IDisposable
 {
     private readonly double spacing;
+    private readonly WorkCounter counter;
+    private readonly long budget;
     private readonly Dictionary<int, Drawing> drawings = new();
     private readonly Dictionary<int, List<Orientation>> orientations = new();
     private readonly Dictionary<int, int> attempts = new();
@@ -24,9 +26,11 @@ internal sealed class BlockCatalog : IDisposable
     private readonly Dictionary<(int Type, int Quantity, double Length, double Width), IReadOnlyList<Placed>> cache = new();
 
     public BlockCatalog(double spacing, IReadOnlyList<PartType> types,
-        IReadOnlyDictionary<int, IReadOnlyList<PairPose>> pairs)
+        IReadOnlyDictionary<int, IReadOnlyList<PairPose>> pairs, WorkCounter counter, long budget)
     {
         this.spacing = spacing;
+        this.counter = counter;
+        this.budget = budget;
         foreach (var type in types)
         {
             var poses = type.Orientations.ToList();
@@ -65,7 +69,7 @@ internal sealed class BlockCatalog : IDisposable
         var key = (type.Index, quantity, rectangle.Length, rectangle.Width);
         if (cache.TryGetValue(key, out var cached))
             return cached;
-        if (rectangle.Area() < 3 * type.Area || attempts.GetValueOrDefault(type.Index) >= 8)
+        if (rectangle.Area() < 3 * type.Area || attempts.GetValueOrDefault(type.Index) >= 8 || counter.Value >= budget)
             return Array.Empty<Placed>();
         attempts[type.Index] = attempts.GetValueOrDefault(type.Index) + 1;
         var result = Build(type, quantity, rectangle, token);
@@ -75,6 +79,11 @@ internal sealed class BlockCatalog : IDisposable
 
     private IReadOnlyList<Placed> Build(PartType type, int quantity, Box rectangle, CancellationToken token)
     {
+        // PrivatePlateFill.Run below is a full independent NFP-based pack whose own operations
+        // never touch this solve's effort meter; charge it here using the same factors - demand
+        // and outline complexity - that drive its real cost, so the shared budget actually sees it.
+        var vertices = type.Orientations.Count > 0 ? type.Orientations[0].Outline.Count : 1;
+        counter.Add((long)quantity * quantity * System.Math.Max(1, vertices));
         if (!drawings.TryGetValue(type.Index, out var drawing))
             drawings[type.Index] = drawing = DrawingJobMapper.CreateDrawing(type.Part);
         try

OpenNest.Engine/NestingEngines/Irregular/IrregularNestingEngine.cs

@@ -48,7 +48,7 @@ public sealed class IrregularNestingEngine : INestingEngine
         ArgumentNullException.ThrowIfNull(job);
         token.ThrowIfCancellationRequested();
         var types = PartCatalog.Build(job);
-        using var solver = new Solver(job, types, progress, token);
+        using var solver = new Solver(job, types, progress, token, WorkBudget);
 
         // Pair-only orientations may fit stock even when the sampled single poses do not.
         // Demand that neither a single nor a pair can fit is reported unplaced.
@@ -86,7 +86,8 @@ public sealed class IrregularNestingEngine : INestingEngine
         NestJob job,
         IReadOnlyList<PartType> types,
         IProgress<NestJobProgress>? progress,
-        CancellationToken token
+        CancellationToken token,
+        long workBudget
     ) : IDisposable
     {
         public void Dispose()
@@ -104,7 +105,7 @@ public sealed class IrregularNestingEngine : INestingEngine
         {
             var spacing = System.Math.Max(0, stock.PartSpacing);
             if (!blocks.TryGetValue(spacing, out var found))
-                blocks[spacing] = found = new BlockCatalog(spacing, types, PairsFor(stock));
+                blocks[spacing] = found = new BlockCatalog(spacing, types, PairsFor(stock), Work, workBudget);
             return found;
         }
 

OpenNest/Controls/PlateView.cs

@@ -84,6 +84,12 @@ namespace OpenNest.Controls
         public event EventHandler PartsReordered;
         public event EventHandler StatusChanged;
 
+        /// <summary>
+        /// Raised when files are dropped on the plate and something is listening (see
+        /// <see cref="OnDragEnter"/>); callers decide which paths to act on.
+        /// </summary>
+        public event EventHandler<string[]> FilesDropped;
+
         public event EventHandler SelectionChanged
         {
             add => selection.SelectionChanged += value;
@@ -313,10 +319,18 @@ namespace OpenNest.Controls
         {
             if (drgevent.Data.GetData(typeof(Drawing)) != null)
                 drgevent.Effect = DragDropEffects.Copy;
+            else if (FilesDropped != null && drgevent.Data.GetDataPresent(DataFormats.FileDrop))
+                drgevent.Effect = DragDropEffects.Copy;
         }
 
         protected override void OnDragDrop(DragEventArgs drgevent)
         {
+            if (drgevent.Data.GetDataPresent(DataFormats.FileDrop))
+            {
+                FilesDropped?.Invoke(this, (string[])drgevent.Data.GetData(DataFormats.FileDrop));
+                return;
+            }
+
             var dwg = drgevent.Data.GetData(typeof(Drawing)) as Drawing;
 
             if (dwg == null)

OpenNest/Forms/MainForm.Designer.cs

@@ -73,27 +73,14 @@
             mnuTools = new System.Windows.Forms.ToolStripMenuItem();
             mnuToolsMeasureArea = new System.Windows.Forms.ToolStripMenuItem();
             mnuToolsBestFitViewer = new System.Windows.Forms.ToolStripMenuItem();
-            mnuToolsPatternTile = new System.Windows.Forms.ToolStripMenuItem();
-            mnuToolsExpandSpacing = new System.Windows.Forms.ToolStripMenuItem();
-            mnuToolsAlign = new System.Windows.Forms.ToolStripMenuItem();
-            mnuToolsAlignLeft = new System.Windows.Forms.ToolStripMenuItem();
-            mnuToolsAlignRight = new System.Windows.Forms.ToolStripMenuItem();
-            mnuToolsAlignTop = new System.Windows.Forms.ToolStripMenuItem();
-            mnuToolsAlignBottom = new System.Windows.Forms.ToolStripMenuItem();
-            toolStripMenuItem11 = new System.Windows.Forms.ToolStripSeparator();
-            mnuToolsAlignHorizontal = new System.Windows.Forms.ToolStripMenuItem();
-            mnuToolsAlignVertically = new System.Windows.Forms.ToolStripMenuItem();
-            toolStripMenuItem8 = new System.Windows.Forms.ToolStripSeparator();
-            mnuToolsEvenlySpaceHorizontal = new System.Windows.Forms.ToolStripMenuItem();
-            mnuToolsEvenlySpaceVertical = new System.Windows.Forms.ToolStripMenuItem();
             toolStripMenuItem14 = new System.Windows.Forms.ToolStripSeparator();
-            mnuSetOffsetIncrement = new System.Windows.Forms.ToolStripMenuItem();
-            mnuSetRotationIncrement = new System.Windows.Forms.ToolStripMenuItem();
-            toolStripMenuItem15 = new System.Windows.Forms.ToolStripSeparator();
             mnuToolsMachineConfig = new System.Windows.Forms.ToolStripMenuItem();
             mnuToolsNestDefaults = new System.Windows.Forms.ToolStripMenuItem();
             mnuToolsSaveCurrentAsDefaults = new System.Windows.Forms.ToolStripMenuItem();
             mnuToolsOptions = new System.Windows.Forms.ToolStripMenuItem();
+            toolStripMenuItem15 = new System.Windows.Forms.ToolStripSeparator();
+            mnuSetOffsetIncrement = new System.Windows.Forms.ToolStripMenuItem();
+            mnuSetRotationIncrement = new System.Windows.Forms.ToolStripMenuItem();
             mnuNest = new System.Windows.Forms.ToolStripMenuItem();
             mnuNestEdit = new System.Windows.Forms.ToolStripMenuItem();
             mnuNestImportDrawing = new System.Windows.Forms.ToolStripMenuItem();
@@ -130,20 +117,35 @@
             mnuPlateRotate180 = new System.Windows.Forms.ToolStripMenuItem();
             mnuResizeToFitParts = new System.Windows.Forms.ToolStripMenuItem();
             toolStripMenuItem13 = new System.Windows.Forms.ToolStripSeparator();
-            mnuPlateViewInCad = new System.Windows.Forms.ToolStripMenuItem();
-            toolStripMenuItem20 = new System.Windows.Forms.ToolStripSeparator();
+            mnuPlateArrange = new System.Windows.Forms.ToolStripMenuItem();
+            mnuPlateAlignLeft = new System.Windows.Forms.ToolStripMenuItem();
+            mnuPlateAlignRight = new System.Windows.Forms.ToolStripMenuItem();
+            mnuPlateAlignTop = new System.Windows.Forms.ToolStripMenuItem();
+            mnuPlateAlignBottom = new System.Windows.Forms.ToolStripMenuItem();
+            toolStripMenuItem11 = new System.Windows.Forms.ToolStripSeparator();
+            mnuPlateAlignHorizontal = new System.Windows.Forms.ToolStripMenuItem();
+            mnuPlateAlignVertically = new System.Windows.Forms.ToolStripMenuItem();
+            toolStripMenuItem8 = new System.Windows.Forms.ToolStripSeparator();
+            mnuPlateEvenlySpaceHorizontal = new System.Windows.Forms.ToolStripMenuItem();
+            mnuPlateEvenlySpaceVertical = new System.Windows.Forms.ToolStripMenuItem();
+            toolStripMenuItem23 = new System.Windows.Forms.ToolStripSeparator();
+            centerPartsToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
+            toolStripMenuItem24 = new System.Windows.Forms.ToolStripSeparator();
+            mnuPlatePatternTile = new System.Windows.Forms.ToolStripMenuItem();
+            mnuPlateExpandSpacing = new System.Windows.Forms.ToolStripMenuItem();
             mnuSequenceParts = new System.Windows.Forms.ToolStripMenuItem();
             autoSequenceCurrentPlateToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
             manualSequenceToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
             calculateCutTimeToolStripMenuItem1 = new System.Windows.Forms.ToolStripMenuItem();
-            centerPartsToolStripMenuItem = new System.Windows.Forms.ToolStripMenuItem();
-            mnuPlateCutOff = new System.Windows.Forms.ToolStripMenuItem();
-            mnuPlateAutomaticCutOff = new System.Windows.Forms.ToolStripMenuItem();
             toolStripMenuItem21 = new System.Windows.Forms.ToolStripSeparator();
             mnuPlatePlanCutting = new System.Windows.Forms.ToolStripMenuItem();
             mnuPlateAssignLeadIns = new System.Windows.Forms.ToolStripMenuItem();
             mnuPlatePlaceLeadIn = new System.Windows.Forms.ToolStripMenuItem();
             mnuPlateRemoveLeadIns = new System.Windows.Forms.ToolStripMenuItem();
+            toolStripMenuItem20 = new System.Windows.Forms.ToolStripSeparator();
+            mnuPlateViewInCad = new System.Windows.Forms.ToolStripMenuItem();
+            mnuPlateCutOff = new System.Windows.Forms.ToolStripMenuItem();
+            mnuPlateAutomaticCutOff = new System.Windows.Forms.ToolStripMenuItem();
             mnuWindow = new System.Windows.Forms.ToolStripMenuItem();
             mnuWindowCascade = new System.Windows.Forms.ToolStripMenuItem();
             mnuWindowTileVertical = new System.Windows.Forms.ToolStripMenuItem();
@@ -494,7 +496,7 @@
             // 
             // mnuTools
             // 
-            mnuTools.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] { mnuToolsMeasureArea, mnuToolsBestFitViewer, mnuToolsPatternTile, mnuToolsExpandSpacing, mnuToolsAlign, toolStripMenuItem14, mnuSetOffsetIncrement, mnuSetRotationIncrement, toolStripMenuItem15, mnuToolsMachineConfig, mnuToolsNestDefaults, mnuToolsSaveCurrentAsDefaults, mnuToolsOptions });
+            mnuTools.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] { mnuToolsMeasureArea, mnuToolsBestFitViewer, toolStripMenuItem14, mnuToolsMachineConfig, mnuToolsNestDefaults, mnuToolsSaveCurrentAsDefaults, mnuToolsOptions, toolStripMenuItem15, mnuSetOffsetIncrement, mnuSetRotationIncrement });
             mnuTools.Name = "mnuTools";
             mnuTools.Size = new System.Drawing.Size(47, 20);
             mnuTools.Text = "&Tools";
@@ -513,93 +515,6 @@
             mnuToolsBestFitViewer.Text = "Best-Fit Viewer";
             mnuToolsBestFitViewer.Click += BestFitViewer_Click;
             //
-            // mnuToolsPatternTile
-            //
-            this.mnuToolsPatternTile.Name = "mnuToolsPatternTile";
-            this.mnuToolsPatternTile.Size = new System.Drawing.Size(214, 22);
-            this.mnuToolsPatternTile.Text = "Pattern Tile";
-            this.mnuToolsPatternTile.Click += PatternTile_Click;
-            //
-            // mnuToolsExpandSpacing
-            //
-            this.mnuToolsExpandSpacing.Name = "mnuToolsExpandSpacing";
-            this.mnuToolsExpandSpacing.Size = new System.Drawing.Size(214, 22);
-            this.mnuToolsExpandSpacing.Text = "Expand Spacing";
-            this.mnuToolsExpandSpacing.Click += ExpandSpacing_Click;
-            //
-            // mnuToolsAlign
-            //
-            mnuToolsAlign.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] { mnuToolsAlignLeft, mnuToolsAlignRight, mnuToolsAlignTop, mnuToolsAlignBottom, toolStripMenuItem11, mnuToolsAlignHorizontal, mnuToolsAlignVertically, toolStripMenuItem8, mnuToolsEvenlySpaceHorizontal, mnuToolsEvenlySpaceVertical });
-            mnuToolsAlign.Name = "mnuToolsAlign";
-            mnuToolsAlign.Size = new System.Drawing.Size(214, 22);
-            mnuToolsAlign.Text = "Align Selected";
-            // 
-            // mnuToolsAlignLeft
-            // 
-            mnuToolsAlignLeft.Name = "mnuToolsAlignLeft";
-            mnuToolsAlignLeft.Size = new System.Drawing.Size(209, 22);
-            mnuToolsAlignLeft.Text = "Left";
-            mnuToolsAlignLeft.Click += AlignLeft_Click;
-            // 
-            // mnuToolsAlignRight
-            // 
-            mnuToolsAlignRight.Name = "mnuToolsAlignRight";
-            mnuToolsAlignRight.Size = new System.Drawing.Size(209, 22);
-            mnuToolsAlignRight.Text = "Right";
-            mnuToolsAlignRight.Click += AlignRight_Click;
-            // 
-            // mnuToolsAlignTop
-            // 
-            mnuToolsAlignTop.Name = "mnuToolsAlignTop";
-            mnuToolsAlignTop.Size = new System.Drawing.Size(209, 22);
-            mnuToolsAlignTop.Text = "Top";
-            mnuToolsAlignTop.Click += AlignTop_Click;
-            // 
-            // mnuToolsAlignBottom
-            // 
-            mnuToolsAlignBottom.Name = "mnuToolsAlignBottom";
-            mnuToolsAlignBottom.Size = new System.Drawing.Size(209, 22);
-            mnuToolsAlignBottom.Text = "Bottom";
-            mnuToolsAlignBottom.Click += AlignBottom_Click;
-            // 
-            // toolStripMenuItem11
-            // 
-            toolStripMenuItem11.Name = "toolStripMenuItem11";
-            toolStripMenuItem11.Size = new System.Drawing.Size(206, 6);
-            // 
-            // mnuToolsAlignHorizontal
-            // 
-            mnuToolsAlignHorizontal.Name = "mnuToolsAlignHorizontal";
-            mnuToolsAlignHorizontal.Size = new System.Drawing.Size(209, 22);
-            mnuToolsAlignHorizontal.Text = "Horizontally";
-            mnuToolsAlignHorizontal.Click += AlignHorizontal_Click;
-            // 
-            // mnuToolsAlignVertically
-            // 
-            mnuToolsAlignVertically.Name = "mnuToolsAlignVertically";
-            mnuToolsAlignVertically.Size = new System.Drawing.Size(209, 22);
-            mnuToolsAlignVertically.Text = "Vertically";
-            mnuToolsAlignVertically.Click += AlignVertical_Click;
-            // 
-            // toolStripMenuItem8
-            // 
-            toolStripMenuItem8.Name = "toolStripMenuItem8";
-            toolStripMenuItem8.Size = new System.Drawing.Size(206, 6);
-            // 
-            // mnuToolsEvenlySpaceHorizontal
-            // 
-            mnuToolsEvenlySpaceHorizontal.Name = "mnuToolsEvenlySpaceHorizontal";
-            mnuToolsEvenlySpaceHorizontal.Size = new System.Drawing.Size(209, 22);
-            mnuToolsEvenlySpaceHorizontal.Text = "Evenly Space Horizontally";
-            mnuToolsEvenlySpaceHorizontal.Click += EvenlySpaceHorizontally_Click;
-            // 
-            // mnuToolsEvenlySpaceVertical
-            // 
-            mnuToolsEvenlySpaceVertical.Name = "mnuToolsEvenlySpaceVertical";
-            mnuToolsEvenlySpaceVertical.Size = new System.Drawing.Size(209, 22);
-            mnuToolsEvenlySpaceVertical.Text = "Evenly Space Vertically";
-            mnuToolsEvenlySpaceVertical.Click += EvenlySpaceVertically_Click;
-            // 
             // toolStripMenuItem14
             // 
             toolStripMenuItem14.Name = "toolStripMenuItem14";
@@ -805,8 +720,8 @@
             mnuNestRemoveLeadIns.Click += NestRemoveLeadIns_Click;
             //
             // mnuPlate
-            // 
-            mnuPlate.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] { mnuPlateEdit, mnuPlateSetAsDefault, toolStripMenuItem18, mnuPlateAdd, mnuPlateRemove, toolStripMenuItem16, mnuPlateCutOff, mnuPlateAutomaticCutOff, mnuPlateRotate, mnuResizeToFitParts, toolStripMenuItem13, mnuPlateViewInCad, toolStripMenuItem20, mnuSequenceParts, calculateCutTimeToolStripMenuItem1, centerPartsToolStripMenuItem, toolStripMenuItem21, mnuPlatePlanCutting, mnuPlateAssignLeadIns, mnuPlatePlaceLeadIn, mnuPlateRemoveLeadIns });
+            //
+            mnuPlate.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] { mnuPlateEdit, mnuPlateSetAsDefault, toolStripMenuItem18, mnuPlateAdd, mnuPlateRemove, toolStripMenuItem16, mnuPlateCutOff, mnuPlateAutomaticCutOff, mnuPlateRotate, mnuResizeToFitParts, toolStripMenuItem13, mnuPlateArrange, mnuSequenceParts, calculateCutTimeToolStripMenuItem1, toolStripMenuItem21, mnuPlatePlanCutting, mnuPlateAssignLeadIns, mnuPlatePlaceLeadIn, mnuPlateRemoveLeadIns, toolStripMenuItem20, mnuPlateViewInCad });
             mnuPlate.Name = "mnuPlate";
             mnuPlate.Size = new System.Drawing.Size(45, 20);
             mnuPlate.Text = "&Plate";
@@ -901,64 +816,149 @@
             mnuPlateRotate180.Click += Rotate180_Click;
             // 
             // mnuResizeToFitParts
-            // 
+            //
             mnuResizeToFitParts.Name = "mnuResizeToFitParts";
             mnuResizeToFitParts.ShortcutKeys = System.Windows.Forms.Keys.Control | System.Windows.Forms.Keys.P;
             mnuResizeToFitParts.Size = new System.Drawing.Size(177, 22);
             mnuResizeToFitParts.Text = "Resize to Fit";
             mnuResizeToFitParts.Click += ResizeToFitParts_Click;
-            // 
+            //
             // toolStripMenuItem13
-            // 
+            //
             toolStripMenuItem13.Name = "toolStripMenuItem13";
             toolStripMenuItem13.Size = new System.Drawing.Size(174, 6);
-            // 
-            // mnuPlateViewInCad
-            // 
-            mnuPlateViewInCad.Name = "mnuPlateViewInCad";
-            mnuPlateViewInCad.Size = new System.Drawing.Size(177, 22);
-            mnuPlateViewInCad.Text = "View in CAD";
-            mnuPlateViewInCad.Click += OpenInExternalCad_Click;
-            // 
-            // toolStripMenuItem20
-            // 
-            toolStripMenuItem20.Name = "toolStripMenuItem20";
-            toolStripMenuItem20.Size = new System.Drawing.Size(174, 6);
-            // 
+            //
+            // mnuPlateArrange
+            //
+            mnuPlateArrange.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] { mnuPlateAlignLeft, mnuPlateAlignRight, mnuPlateAlignTop, mnuPlateAlignBottom, toolStripMenuItem11, mnuPlateAlignHorizontal, mnuPlateAlignVertically, toolStripMenuItem8, mnuPlateEvenlySpaceHorizontal, mnuPlateEvenlySpaceVertical, toolStripMenuItem23, centerPartsToolStripMenuItem, toolStripMenuItem24, mnuPlatePatternTile, mnuPlateExpandSpacing });
+            mnuPlateArrange.Name = "mnuPlateArrange";
+            mnuPlateArrange.Size = new System.Drawing.Size(177, 22);
+            mnuPlateArrange.Text = "Arrange";
+            //
+            // mnuPlateAlignLeft
+            //
+            mnuPlateAlignLeft.Name = "mnuPlateAlignLeft";
+            mnuPlateAlignLeft.Size = new System.Drawing.Size(209, 22);
+            mnuPlateAlignLeft.Text = "Left";
+            mnuPlateAlignLeft.Click += AlignLeft_Click;
+            //
+            // mnuPlateAlignRight
+            //
+            mnuPlateAlignRight.Name = "mnuPlateAlignRight";
+            mnuPlateAlignRight.Size = new System.Drawing.Size(209, 22);
+            mnuPlateAlignRight.Text = "Right";
+            mnuPlateAlignRight.Click += AlignRight_Click;
+            //
+            // mnuPlateAlignTop
+            //
+            mnuPlateAlignTop.Name = "mnuPlateAlignTop";
+            mnuPlateAlignTop.Size = new System.Drawing.Size(209, 22);
+            mnuPlateAlignTop.Text = "Top";
+            mnuPlateAlignTop.Click += AlignTop_Click;
+            //
+            // mnuPlateAlignBottom
+            //
+            mnuPlateAlignBottom.Name = "mnuPlateAlignBottom";
+            mnuPlateAlignBottom.Size = new System.Drawing.Size(209, 22);
+            mnuPlateAlignBottom.Text = "Bottom";
+            mnuPlateAlignBottom.Click += AlignBottom_Click;
+            //
+            // toolStripMenuItem11
+            //
+            toolStripMenuItem11.Name = "toolStripMenuItem11";
+            toolStripMenuItem11.Size = new System.Drawing.Size(206, 6);
+            //
+            // mnuPlateAlignHorizontal
+            //
+            mnuPlateAlignHorizontal.Name = "mnuPlateAlignHorizontal";
+            mnuPlateAlignHorizontal.Size = new System.Drawing.Size(209, 22);
+            mnuPlateAlignHorizontal.Text = "Horizontally";
+            mnuPlateAlignHorizontal.Click += AlignHorizontal_Click;
+            //
+            // mnuPlateAlignVertically
+            //
+            mnuPlateAlignVertically.Name = "mnuPlateAlignVertically";
+            mnuPlateAlignVertically.Size = new System.Drawing.Size(209, 22);
+            mnuPlateAlignVertically.Text = "Vertically";
+            mnuPlateAlignVertically.Click += AlignVertical_Click;
+            //
+            // toolStripMenuItem8
+            //
+            toolStripMenuItem8.Name = "toolStripMenuItem8";
+            toolStripMenuItem8.Size = new System.Drawing.Size(206, 6);
+            //
+            // mnuPlateEvenlySpaceHorizontal
+            //
+            mnuPlateEvenlySpaceHorizontal.Name = "mnuPlateEvenlySpaceHorizontal";
+            mnuPlateEvenlySpaceHorizontal.Size = new System.Drawing.Size(209, 22);
+            mnuPlateEvenlySpaceHorizontal.Text = "Evenly Space Horizontally";
+            mnuPlateEvenlySpaceHorizontal.Click += EvenlySpaceHorizontally_Click;
+            //
+            // mnuPlateEvenlySpaceVertical
+            //
+            mnuPlateEvenlySpaceVertical.Name = "mnuPlateEvenlySpaceVertical";
+            mnuPlateEvenlySpaceVertical.Size = new System.Drawing.Size(209, 22);
+            mnuPlateEvenlySpaceVertical.Text = "Evenly Space Vertically";
+            mnuPlateEvenlySpaceVertical.Click += EvenlySpaceVertically_Click;
+            //
+            // toolStripMenuItem23
+            //
+            toolStripMenuItem23.Name = "toolStripMenuItem23";
+            toolStripMenuItem23.Size = new System.Drawing.Size(206, 6);
+            //
+            // centerPartsToolStripMenuItem
+            //
+            centerPartsToolStripMenuItem.Name = "centerPartsToolStripMenuItem";
+            centerPartsToolStripMenuItem.Size = new System.Drawing.Size(209, 22);
+            centerPartsToolStripMenuItem.Text = "Center Parts";
+            centerPartsToolStripMenuItem.Click += centerPartsToolStripMenuItem_Click;
+            //
+            // toolStripMenuItem24
+            //
+            toolStripMenuItem24.Name = "toolStripMenuItem24";
+            toolStripMenuItem24.Size = new System.Drawing.Size(206, 6);
+            //
+            // mnuPlatePatternTile
+            //
+            mnuPlatePatternTile.Name = "mnuPlatePatternTile";
+            mnuPlatePatternTile.Size = new System.Drawing.Size(209, 22);
+            mnuPlatePatternTile.Text = "Pattern Tile";
+            mnuPlatePatternTile.Click += PatternTile_Click;
+            //
+            // mnuPlateExpandSpacing
+            //
+            mnuPlateExpandSpacing.Name = "mnuPlateExpandSpacing";
+            mnuPlateExpandSpacing.Size = new System.Drawing.Size(209, 22);
+            mnuPlateExpandSpacing.Text = "Expand Spacing";
+            mnuPlateExpandSpacing.Click += ExpandSpacing_Click;
+            //
             // mnuSequenceParts
-            // 
+            //
             mnuSequenceParts.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] { autoSequenceCurrentPlateToolStripMenuItem, manualSequenceToolStripMenuItem });
             mnuSequenceParts.Name = "mnuSequenceParts";
             mnuSequenceParts.Size = new System.Drawing.Size(177, 22);
             mnuSequenceParts.Text = "Sequence Parts";
-            // 
+            //
             // autoSequenceCurrentPlateToolStripMenuItem
-            // 
+            //
             autoSequenceCurrentPlateToolStripMenuItem.Name = "autoSequenceCurrentPlateToolStripMenuItem";
             autoSequenceCurrentPlateToolStripMenuItem.Size = new System.Drawing.Size(168, 22);
             autoSequenceCurrentPlateToolStripMenuItem.Text = "Auto Sequence";
             autoSequenceCurrentPlateToolStripMenuItem.Click += AutoSequenceCurrentPlate_Click;
-            // 
+            //
             // manualSequenceToolStripMenuItem
-            // 
+            //
             manualSequenceToolStripMenuItem.Name = "manualSequenceToolStripMenuItem";
             manualSequenceToolStripMenuItem.Size = new System.Drawing.Size(168, 22);
             manualSequenceToolStripMenuItem.Text = "Manual Sequence";
             manualSequenceToolStripMenuItem.Click += ManualSequenceParts_Click;
-            // 
+            //
             // calculateCutTimeToolStripMenuItem1
-            // 
+            //
             calculateCutTimeToolStripMenuItem1.Name = "calculateCutTimeToolStripMenuItem1";
             calculateCutTimeToolStripMenuItem1.Size = new System.Drawing.Size(177, 22);
             calculateCutTimeToolStripMenuItem1.Text = "Calculate Cut Time";
             calculateCutTimeToolStripMenuItem1.Click += CalculatePlateCutTime_Click;
-            // 
-            // centerPartsToolStripMenuItem
-            // 
-            centerPartsToolStripMenuItem.Name = "centerPartsToolStripMenuItem";
-            centerPartsToolStripMenuItem.Size = new System.Drawing.Size(177, 22);
-            centerPartsToolStripMenuItem.Text = "Center Parts";
-            centerPartsToolStripMenuItem.Click += centerPartsToolStripMenuItem_Click;
             //
             // toolStripMenuItem21
             //
@@ -993,6 +993,18 @@
             mnuPlateRemoveLeadIns.Text = "Remove Lead-ins";
             mnuPlateRemoveLeadIns.Click += PlateRemoveLeadIns_Click;
             //
+            // toolStripMenuItem20
+            //
+            toolStripMenuItem20.Name = "toolStripMenuItem20";
+            toolStripMenuItem20.Size = new System.Drawing.Size(174, 6);
+            //
+            // mnuPlateViewInCad
+            //
+            mnuPlateViewInCad.Name = "mnuPlateViewInCad";
+            mnuPlateViewInCad.Size = new System.Drawing.Size(177, 22);
+            mnuPlateViewInCad.Text = "View in CAD";
+            mnuPlateViewInCad.Click += OpenInExternalCad_Click;
+            //
             // mnuWindow
             // 
             mnuWindow.DropDownItems.AddRange(new System.Windows.Forms.ToolStripItem[] { mnuWindowCascade, mnuWindowTileVertical, mnuWindowTileHorizontal, toolStripMenuItem10, closeToolStripMenuItem, mnuCloseAll });
@@ -1394,17 +1406,19 @@
         private System.Windows.Forms.ToolStripMenuItem mnuViewZoomToPlate;
         private System.Windows.Forms.ToolStripMenuItem mnuViewZoomToSelected;
         private System.Windows.Forms.ToolStripMenuItem mnuResizeToFitParts;
-        private System.Windows.Forms.ToolStripMenuItem mnuToolsAlign;
-        private System.Windows.Forms.ToolStripMenuItem mnuToolsAlignLeft;
-        private System.Windows.Forms.ToolStripMenuItem mnuToolsAlignRight;
-        private System.Windows.Forms.ToolStripMenuItem mnuToolsAlignTop;
-        private System.Windows.Forms.ToolStripMenuItem mnuToolsAlignBottom;
+        private System.Windows.Forms.ToolStripMenuItem mnuPlateArrange;
+        private System.Windows.Forms.ToolStripMenuItem mnuPlateAlignLeft;
+        private System.Windows.Forms.ToolStripMenuItem mnuPlateAlignRight;
+        private System.Windows.Forms.ToolStripMenuItem mnuPlateAlignTop;
+        private System.Windows.Forms.ToolStripMenuItem mnuPlateAlignBottom;
         private System.Windows.Forms.ToolStripSeparator toolStripMenuItem11;
-        private System.Windows.Forms.ToolStripMenuItem mnuToolsAlignHorizontal;
-        private System.Windows.Forms.ToolStripMenuItem mnuToolsAlignVertically;
+        private System.Windows.Forms.ToolStripMenuItem mnuPlateAlignHorizontal;
+        private System.Windows.Forms.ToolStripMenuItem mnuPlateAlignVertically;
         private System.Windows.Forms.ToolStripSeparator toolStripMenuItem8;
-        private System.Windows.Forms.ToolStripMenuItem mnuToolsEvenlySpaceHorizontal;
-        private System.Windows.Forms.ToolStripMenuItem mnuToolsEvenlySpaceVertical;
+        private System.Windows.Forms.ToolStripMenuItem mnuPlateEvenlySpaceHorizontal;
+        private System.Windows.Forms.ToolStripMenuItem mnuPlateEvenlySpaceVertical;
+        private System.Windows.Forms.ToolStripSeparator toolStripMenuItem23;
+        private System.Windows.Forms.ToolStripSeparator toolStripMenuItem24;
         private System.Windows.Forms.ToolStripSeparator toolStripMenuItem12;
         private System.Windows.Forms.ToolStripMenuItem mnuNestPost;
         private System.Windows.Forms.ToolStripSeparator toolStripMenuItem13;
@@ -1440,8 +1454,8 @@
         private System.Windows.Forms.ToolStripMenuItem autoSequenceAllPlatesToolStripMenuItem;
         private System.Windows.Forms.ToolStripMenuItem mnuToolsMeasureArea;
         private System.Windows.Forms.ToolStripMenuItem mnuToolsBestFitViewer;
-        private System.Windows.Forms.ToolStripMenuItem mnuToolsPatternTile;
-        private System.Windows.Forms.ToolStripMenuItem mnuToolsExpandSpacing;
+        private System.Windows.Forms.ToolStripMenuItem mnuPlatePatternTile;
+        private System.Windows.Forms.ToolStripMenuItem mnuPlateExpandSpacing;
         private System.Windows.Forms.ToolStripButton btnSaveAs;
         private System.Windows.Forms.ToolStripMenuItem centerPartsToolStripMenuItem;
         private System.Windows.Forms.ToolStripStatusLabel gpuStatusLabel;

OpenNest/Forms/MainForm.cs

@@ -69,6 +69,7 @@ namespace OpenNest.Forms
             clickUpdateLocation = true;
 
             this.SetBevel(false);
+            AllowDrop = true;
 
             LoadPosts();
             EnableCheck();
@@ -173,6 +174,7 @@ namespace OpenNest.Forms
             if (remoteId != Guid.Empty)
                 editForm.Document.BindRemote(remoteId, serverUrl);
             editForm.MdiParent = this;
+            editForm.PlateView.FilesDropped += (sender, paths) => OpenDroppedNestFiles(paths);
             editForm.PlateChanged += (sender, e) =>
             {
                 NavigationEnableCheck();
@@ -232,9 +234,7 @@ namespace OpenNest.Forms
             mnuNest.Visible = hasValue;
             mnuPlate.Visible = hasValue;
             mnuWindow.Visible = hasValue;
-            mnuToolsAlign.Visible = hasValue;
             mnuToolsMeasureArea.Visible = hasValue;
-            mnuToolsExpandSpacing.Visible = hasValue;
             mnuToolsSaveCurrentAsDefaults.Visible = hasValue;
 
             toolStripMenuItem14.Visible = hasValue;
@@ -554,6 +554,43 @@ namespace OpenNest.Forms
             Settings.Default.Save();
         }
 
+        protected override void OnDragEnter(DragEventArgs e)
+        {
+            base.OnDragEnter(e);
+            e.Effect = HasDroppedNestFile(e.Data) ? DragDropEffects.Copy : DragDropEffects.None;
+        }
+
+        protected override void OnDragDrop(DragEventArgs e)
+        {
+            base.OnDragDrop(e);
+            if (e.Data.GetData(DataFormats.FileDrop) is string[] paths)
+                OpenDroppedNestFiles(paths);
+        }
+
+        private static bool HasDroppedNestFile(IDataObject data) =>
+            data.GetData(DataFormats.FileDrop) is string[] paths
+            && paths.Any(path => string.Equals(
+                Path.GetExtension(path), NestFormat.FileExtension, StringComparison.OrdinalIgnoreCase));
+
+        /// <summary>
+        /// Opens dropped .nest files locally regardless of storage mode. Loaded documents are
+        /// not bound to a server record, so Save/Save As follow the normal storage-mode rules
+        /// (File mode writes to disk; Database mode creates a new record on first save).
+        /// </summary>
+        private void OpenDroppedNestFiles(IEnumerable<string> paths)
+        {
+            foreach (var path in paths)
+            {
+                if (!string.Equals(Path.GetExtension(path), NestFormat.FileExtension, StringComparison.OrdinalIgnoreCase))
+                    continue;
+
+                var reader = new NestReader(path);
+                var nest = reader.Read();
+                LoadNest(nest);
+                ShowNestWarnings(reader);
+            }
+        }
+
         protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
         {
             base.OnClosing(e);

OpenNest/Forms/SavedNestsForm.cs

@@ -72,6 +72,7 @@ public sealed class SavedNestsForm : Form
         StartPosition = FormStartPosition.CenterParent;
         ClientSize = new Size(1280, 800);
         MinimumSize = new Size(800, 560);
+        WindowState = FormWindowState.Maximized;
         MinimizeBox = false;
         ShowInTaskbar = false;
 
@@ -277,6 +278,10 @@ public sealed class SavedNestsForm : Form
 
         Load += (_, _) =>
         {
+            // Keep a maximized dialog's bottom row clear of the taskbar.
+            var area = Screen.FromControl(Owner ?? this).WorkingArea;
+            MaximizedBounds = new Rectangle(area.Left, area.Top, area.Width, area.Height - 20);
+
             // Minimum sizes are applied once the container has its real height; setting them
             // on the default-sized container throws.
             split.Panel1MinSize = 120;
@@ -327,23 +332,27 @@ public sealed class SavedNestsForm : Form
             SelectionMode = DataGridViewSelectionMode.FullRowSelect,
             MultiSelect = false,
             AutoSizeColumnsMode = DataGridViewAutoSizeColumnsMode.None,
-            BackgroundColor = Color.White,
-            BorderStyle = BorderStyle.FixedSingle,
-            GridColor = Color.Silver,
+            BackgroundColor = SystemColors.Window,
+            BorderStyle = BorderStyle.None,
+            GridColor = Color.FromArgb(230, 230, 230),
             EnableHeadersVisualStyles = false,
+            ColumnHeadersBorderStyle = DataGridViewHeaderBorderStyle.Single,
+            RowHeadersBorderStyle = DataGridViewHeaderBorderStyle.Single,
             ColumnHeadersHeightSizeMode = DataGridViewColumnHeadersHeightSizeMode.AutoSize,
             RowHeadersWidthSizeMode = DataGridViewRowHeadersWidthSizeMode.DisableResizing,
             StandardTab = true,
         };
         grid.RowTemplate.Height = 22;
-        grid.DefaultCellStyle.SelectionBackColor = Color.Black;
-        grid.DefaultCellStyle.SelectionForeColor = Color.White;
-        grid.ColumnHeadersDefaultCellStyle.BackColor = SystemColors.Control;
-        grid.ColumnHeadersDefaultCellStyle.SelectionBackColor = SystemColors.Control;
+        grid.DefaultCellStyle.SelectionBackColor = Color.FromArgb(204, 228, 247);
+        grid.DefaultCellStyle.SelectionForeColor = Color.Black;
+        grid.ColumnHeadersDefaultCellStyle.BackColor = Color.FromArgb(245, 245, 245);
+        grid.ColumnHeadersDefaultCellStyle.ForeColor = Color.FromArgb(90, 90, 90);
+        grid.ColumnHeadersDefaultCellStyle.SelectionBackColor = Color.FromArgb(245, 245, 245);
         grid.ColumnHeadersDefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleCenter;
-        grid.RowHeadersDefaultCellStyle.BackColor = SystemColors.Control;
-        grid.RowHeadersDefaultCellStyle.SelectionBackColor = Color.Black;
-        grid.RowHeadersDefaultCellStyle.SelectionForeColor = Color.White;
+        grid.RowHeadersDefaultCellStyle.BackColor = Color.FromArgb(245, 245, 245);
+        grid.RowHeadersDefaultCellStyle.ForeColor = Color.FromArgb(90, 90, 90);
+        grid.RowHeadersDefaultCellStyle.SelectionBackColor = Color.FromArgb(204, 228, 247);
+        grid.RowHeadersDefaultCellStyle.SelectionForeColor = Color.Black;
         grid.RowHeadersDefaultCellStyle.Alignment = DataGridViewContentAlignment.MiddleRight;
         return grid;
     }
@@ -505,8 +514,20 @@ public sealed class SavedNestsForm : Form
     private static string FormatDate(DateTime value) =>
         value == default ? "" : value.ToString("g", CultureInfo.CurrentCulture);
 
-    private static string FormatFileSize(long bytes) =>
-        $"{System.Math.Ceiling(bytes / 1024.0).ToString("N0", CultureInfo.CurrentCulture)} KB";
+    private static readonly string[] FileSizeUnits = { "B", "KB", "MB", "GB" };
+
+    private static string FormatFileSize(long bytes)
+    {
+        double size = bytes;
+        var unitIndex = 0;
+        while (size >= 1024 && unitIndex < FileSizeUnits.Length - 1)
+        {
+            size /= 1024;
+            unitIndex++;
+        }
+
+        return unitIndex == 0 ? $"{size:0} {FileSizeUnits[unitIndex]}" : $"{size:0.#} {FileSizeUnits[unitIndex]}";
+    }
 
     private Guid? SelectedNestId() =>
         nestGrid.SelectedRows.Count > 0 && nestGrid.SelectedRows[0].Cells[IdColumn].Value is Guid id ? id : null;

docs/nest-storage.md

@@ -26,6 +26,13 @@ The desktop app can save nests two ways:
   file to share or back up. Export does not change the document's file save path
   or database record association.
 
+Dragging one or more `.nest` files onto the main window (or onto an open
+plate) opens them from disk directly, in either mode — this is the only way
+to open a local file while in Database mode, since Open there browses server
+records instead of showing a file dialog. A document opened this way is not
+bound to a server record, so a subsequent Save in Database mode creates a new
+record on first save, same as any other unbound document.
+
 The mode and server address are stored per-PC at `%APPDATA%\OpenNest\storage.json`
 (`OpenNest.Data.NestStorageSettings`), defaulting to File mode so existing
 installs are unaffected until an operator opts in via **File > Storage Mode...**.