Обновление отображения дерева

Pf2eViewer/EntityTreeViewer/EntityTreeViewerControl.cs

@@ -1,5 +1,4 @@
-using System.Data;
+using System.Collections.Generic;
-using Pf2eViewer.EntityTreeViewer;
 
 namespace Pf2eViewer.EntityTreeViewer;
 
@@ -7,7 +6,7 @@ public sealed partial class EntityTreeViewerControl : UserControl
 {
     private int _itemHeight = 20;
 
-    private EntityView? _entityView = null;
+    private EntityView? _entityView;
 
     private int _depthSize = 20;
 
@@ -43,9 +42,9 @@ public sealed partial class EntityTreeViewerControl : UserControl
 
     public int NameWidth { get; private set; } = 200;
 
-    private readonly List<StructureField> Rows = [];
+    private readonly List<StructureField> _rows = [];
 
-    private List<EntityTreeViewerRow> ViewerRows = [];
+    private List<EntityTreeViewerRow> _viewerRows = [];
 
     public EntityTreeViewerControl()
     {
@@ -53,31 +52,9 @@ public sealed partial class EntityTreeViewerControl : UserControl
         DoubleBuffered = true;
 
         ContentPanel.AutoScroll = false;
-        ContentPanel.VerticalScroll.Enabled = true;
+        ContentPanel.HorizontalScroll.Maximum = 0;
-        ContentPanel.VerticalScroll.Visible = true;
+        ContentPanel.HorizontalScroll.Visible = false;
-
+        ContentPanel.AutoScroll = true;
-        ContentPanel.MouseWheel += ContentPanel_MouseWheel;
-    }
-
-    private int _visibleRows;
-
-    public int ScrollPosition
-    {
-        get => ContentPanel.VerticalScroll.Value / ItemHeight;
-        set
-        {
-            VScrollProperties scrollBar = ContentPanel.VerticalScroll;
-            int oldValue = scrollBar.Value / ItemHeight;
-            int visibleItems = scrollBar.LargeChange / ItemHeight;
-
-            int scrollValue = Math.Min(Math.Max(value, 0), _visibleRows - visibleItems);
-
-            if (oldValue != scrollValue)
-            {
-                ContentPanel.VerticalScroll.Value = scrollValue * ItemHeight;
-                UpdateScroll();
-            }
-        }
     }
 
     public void UpdateData()
@@ -89,17 +66,17 @@ public sealed partial class EntityTreeViewerControl : UserControl
             return;
         }
 
-        Rows.Clear();
+        _rows.Clear();
 
         StructureBuilder builder = new();
 
-        Rows.Add(builder.Create("Entity", EntityView.Entity));
+        _rows.Add(builder.Create("Entity", EntityView.Entity));
 
         if (EntityView.SubEntity is not null)
         {
             string typeName = EntityView.SubEntity.GetType().Name;
 
-            Rows.Add(builder.Create(typeName, EntityView.SubEntity));
+            _rows.Add(builder.Create(typeName, EntityView.SubEntity));
         }
 
         UpdateRows();
@@ -108,23 +85,23 @@ public sealed partial class EntityTreeViewerControl : UserControl
 
     public void UpdateRows()
     {
-        ViewerRows = Rows.SelectMany(r => r.GetTextRows(this)).ToList();
+        _viewerRows = _rows.SelectMany(r => r.GetTextRows(this)).ToList();
 
         ContentPanel.Controls.Clear();
 
-        ContentPanel.Controls.AddRange(ViewerRows.ToArray());
+        ContentPanel.Controls.AddRange(_viewerRows.ToArray<Control>());
 
         UpdateView();
     }
 
     public void UpdateView()
     {
-        foreach (EntityTreeViewerRow row in ViewerRows)
+        foreach (EntityTreeViewerRow row in _viewerRows)
         {
             row.Visible = row.Item.Visible;
         }
 
-        List<EntityTreeViewerRow> rows = ViewerRows.Where(r => r.Item.Visible).ToList();
+        List<EntityTreeViewerRow> rows = _viewerRows.Where(r => r.Item.Visible).ToList();
 
         int maxNameWidth = -1;
         int viewRow = 0;
@@ -132,53 +109,67 @@ public sealed partial class EntityTreeViewerControl : UserControl
         foreach (EntityTreeViewerRow row in rows)
         {
             row.ViewIndex = viewRow++;
-            int nameWidth = row.GetNameWidth() + row.Item.Depth * DepthSize;
+            int nameWidth = row.NameWidth + row.Item.Depth * DepthSize;
             maxNameWidth = Math.Max(maxNameWidth, nameWidth);
         }
 
         NameWidth = maxNameWidth;
 
+        BuildLadder(rows);
+
         foreach (EntityTreeViewerRow row in rows)
         {
             row.Refresh();
         }
-
-        UpdateScroll();
     }
 
-    public void UpdateScroll()
+    private void BuildLadder(List<EntityTreeViewerRow> rows)
     {
-        List<EntityTreeViewerRow> rows = ViewerRows.Where(r => r.Item.Visible).ToList();
+        List<LadderType> lastLadder = [];
-        _visibleRows = rows.Count;
 
-        ContentPanel.VerticalScroll.Enabled = true;
+        for (int i = rows.Count - 1; i >= 0; i--)
-        ContentPanel.VerticalScroll.Visible = true;
+        {
+            EntityTreeViewerRow row = rows[i];
+            List<LadderType> ladder;
 
-        ContentPanel.VerticalScroll.SmallChange = ItemHeight;
+            if (row.Depth == 0)
-        ContentPanel.VerticalScroll.LargeChange = ContentPanel.Height;
+            {
-        ContentPanel.VerticalScroll.Minimum = 0;
+                ladder = [];
-        ContentPanel.VerticalScroll.Maximum = _visibleRows * ItemHeight;
+            }
+            else if (row.Depth < lastLadder.Count)
+            {
+                ladder =
+                [
+                    .. lastLadder[..(row.Depth - 1)],
+                    lastLadder[row.Depth - 1] == LadderType.Empty
+                        ? LadderType.Last
+                        : LadderType.Through,
+                ];
+            }
+            else if (row.Depth == lastLadder.Count)
+            {
+                ladder = lastLadder;
+            }
+            else
+            {
+                ladder =
+                [
+                    .. lastLadder,
+                    .. Enumerable.Repeat(LadderType.Empty, row.Depth - lastLadder.Count - 1),
+                    LadderType.Last,
+                ];
+            }
 
-        // ContentPanel.VerticalScroll.Value = VerticalScrollBar.Value * ItemHeight;
+            row.Ladder = ladder;
-        /*
+
-        ContentPanel.Top = -VerticalScrollBar.Value * ItemHeight;
+            lastLadder = ladder
-        ContentPanel.Invalidate();
+                .Select(l => (l == LadderType.Last) ? LadderType.Through : l)
-        */
+                .ToList();
+        }
     }
 
     // Events
 
-    private void VerticalScrollBar_Scroll(object sender, ScrollEventArgs e)
-    {
-        UpdateScroll();
-    }
-
-    private void ContentPanel_MouseWheel(object? sender, MouseEventArgs e)
-    {
-        Focus();
-        // ScrollPosition -= e.Delta / 120;
-    }
-
     private void ContentPanel_Resize(object sender, EventArgs e)
     {
         UpdateView();

Pf2eViewer/EntityTreeViewer/EntityTreeViewerRow.Designer.cs

@@ -1,6 +1,6 @@
 namespace Pf2eViewer.EntityTreeViewer;
 
-partial class EntityTreeViewerRow
+sealed partial class EntityTreeViewerRow
 {
     /// <summary> 
     /// Обязательная переменная конструктора.

Pf2eViewer/EntityTreeViewer/EntityTreeViewerRow.cs

@@ -1,9 +1,9 @@
-using FontAwesome.Sharp;
+using System.Diagnostics.CodeAnalysis;
-using static System.Windows.Forms.VisualStyles.VisualStyleElement.Header;
+using FontAwesome.Sharp;
 
 namespace Pf2eViewer.EntityTreeViewer;
 
-internal partial class EntityTreeViewerRow : UserControl
+internal sealed partial class EntityTreeViewerRow : UserControl
 {
     public readonly EntityTreeViewerControl ParentControl;
 
@@ -11,12 +11,66 @@ internal partial class EntityTreeViewerRow : UserControl
 
     public int ViewIndex = 0;
 
+    public Bitmap IconCache
+    {
+        get
+        {
+            if (_iconCache == null)
+            {
+                UpdateCache();
+            }
+            return _iconCache!;
+        }
+        set => _iconCache = value;
+    }
+    private Bitmap? _iconCache;
+
+    public List<LadderType> Ladder
+    {
+        get => _ladder;
+        set
+        {
+            _ladder = value;
+            _iconCache = null;
+        }
+    }
+    private List<LadderType> _ladder = [];
+
+    public override Font Font
+    {
+        get => ParentControl.Font;
+        set => ParentControl.Font = value;
+    }
+    public override Color ForeColor
+    {
+        get => ParentControl.ForeColor;
+        set => ParentControl.ForeColor = value;
+    }
+    public override Color BackColor
+    {
+        get => ParentControl.BackColor;
+        set => ParentControl.BackColor = value;
+    }
+    public int ItemHeight
+    {
+        get => ParentControl.ItemHeight;
+        set => ParentControl.ItemHeight = value;
+    }
+    public int DepthSize
+    {
+        get => ParentControl.ItemHeight;
+        set => ParentControl.ItemHeight = value;
+    }
+
+    // Value functions
+
+    public bool HasButton => Item.FieldType == StructureFieldType.Complex;
     public int Depth => Item.Depth;
+    public int NameWidth => TextRenderer.MeasureText(NameLabel.Text, Font).Width + DepthSize;
 
     public EntityTreeViewerRow(EntityTreeViewerControl parent, StructureField item)
     {
         ParentControl = parent;
-        Font = ParentControl.Font;
 
         Item = item;
 
@@ -27,52 +81,25 @@ internal partial class EntityTreeViewerRow : UserControl
 
     private void ApplyItem()
     {
-        TypeLabel.Font = new Font(Font.FontFamily, Font.Size - 2, FontStyle.Italic);
+        TypeLabel.Font = new(Font.FontFamily, Font.Size - 2, FontStyle.Italic);
 
         NameLabel.Text = Item.Name;
         TypeLabel.Text = Item.GetTypeString();
         if (TypeLabel.Text != "")
         {
-            TypeLabel.Text = $"({TypeLabel.Text})";
+            TypeLabel.Text = $@"({TypeLabel.Text})";
         }
+
         ValueLabel.Text = Item.GetValueString();
+        TypeLabel.ForeColor = ValueLabel.ForeColor = GetValueColor();
 
-        switch (Item)
+        if (Item.FieldType == StructureFieldType.Complex)
         {
-            case StructureFieldPrimitive primitive:
-                switch (Type.GetTypeCode(primitive.Type))
-                {
-                    case TypeCode.Boolean:
-                        ValuePanel.ForeColor = Color.Red;
-                        break;
-                    case TypeCode.Int32:
-                        ValuePanel.ForeColor = Color.Blue;
-                        break;
-                    case TypeCode.String:
-                        ValuePanel.ForeColor = Color.OrangeRed;
-                        break;
-                }
-
-                ValueLabel.ForeColor = ValuePanel.ForeColor;
-                TypeLabel.ForeColor = ValuePanel.ForeColor;
-                break;
-
-            case StructureFieldComplex complex:
             ValueLabel.Font = new(Font, FontStyle.Italic);
-                break;
-
-            case StructureFieldNull @null:
-                break;
-
-            case StructureFieldReference reference:
-                break;
-        }
         }
 
-    public int GetNameWidth()
+        UpdateCache();
-    {
+        Refresh();
-        Size textSize = TextRenderer.MeasureText(NameLabel.Text, Font);
-        return textSize.Width + ParentControl.DepthSize;
     }
 
     public new void Refresh()
@@ -85,10 +112,14 @@ internal partial class EntityTreeViewerRow : UserControl
         Height = ParentControl.ItemHeight;
 
         // Name Panel
-        NamePanel.Left = Depth * ParentControl.DepthSize;
+        NamePanel.Left = 0;
         NamePanel.Width = ParentControl.NameWidth - NamePanel.Left;
 
-        IconPictureBox.Width = ParentControl.ItemHeight;
+        IconPictureBox.Width = IconCache.Width;
+        IconPictureBox.Image = IconCache;
+
+        NameLabel.Left = IconPictureBox.Width;
+        NameLabel.Width = NamePanel.Width - NameLabel.Left;
 
         // Value Panel
         ValuePanel.Left = NamePanel.Left + NamePanel.Width;
@@ -96,63 +127,133 @@ internal partial class EntityTreeViewerRow : UserControl
 
         Size typeSize = TextRenderer.MeasureText(TypeLabel.Text, TypeLabel.Font);
         TypeLabel.Width = typeSize.Width + 3;
-
-        TypeLabel.ForeColor = ValueLabel.ForeColor = GetValueColor();
-
-        if (Item.GetType() == typeof(StructureFieldComplex))
-        {
-            StructureFieldComplex complex = (StructureFieldComplex)Item;
-
-            IconPictureBox.Image = complex.Collapsed
-                ? IconChar.PlusSquare.ToBitmap(IconFont.Auto, ParentControl.DepthSize, ForeColor)
-                : IconChar.MinusSquare.ToBitmap(IconFont.Auto, ParentControl.DepthSize, ForeColor);
     }
+
+    private Color BlendColor(Color color, double rate = 0.5)
+    {
+        return BlendColor(ForeColor, color, rate);
+    }
+
+    private Color BlendColor(Color color1, Color color2, double rate)
+    {
+        return Color.FromArgb(
+            Mix(color1.A, color2.A),
+            Mix(color1.R, color2.R),
+            Mix(color1.G, color2.G),
+            Mix(color1.B, color2.B)
+        );
+
+        int Mix(int a, int b) => Convert.ToInt32(Math.Round(a * rate + b * (1 - rate)));
     }
 
     public Color GetValueColor()
     {
-        Func<Color, Color> blend = (Color color) => _colorBlend([ForeColor, color]);
+        return Item switch
-
-        switch (Item)
         {
-            case StructureFieldPrimitive primitive:
+            StructureFieldPrimitive primitive => Type.GetTypeCode(primitive.Type) switch
-                return Type.GetTypeCode(primitive.Type) switch
             {
-                    TypeCode.Boolean => blend(Color.DarkGoldenrod),
+                TypeCode.Boolean => BlendColor(Color.DarkGoldenrod),
-                    TypeCode.Int32 => blend(Color.Blue),
+                TypeCode.Int32 => BlendColor(Color.Blue),
-                    TypeCode.Double => blend(Color.Aqua),
+                TypeCode.Double => BlendColor(Color.Aqua),
-                    TypeCode.String => blend(Color.Green),
+                TypeCode.String => BlendColor(Color.Green),
+                _ => ForeColor,
+            },
+            StructureFieldEnum => BlendColor(Color.Red),
+            _ => ForeColor,
         };
-
-            case StructureFieldEnum @enum:
-                return blend(Color.Red);
     }
 
-        return ForeColor;
+    // Events
-    }
-
-    private Color _colorBlend(List<Color> clrArr)
-    {
-        int r = 0;
-        int g = 0;
-        int b = 0;
-        foreach (Color color in clrArr)
-        {
-            r += color.R;
-            g += color.G;
-            b += color.B;
-        }
-        return Color.FromArgb(r / clrArr.Count, g / clrArr.Count, b / clrArr.Count);
-    }
 
     private void IconPictureBox_Click(object sender, EventArgs e)
     {
-        if (Item.GetType() == typeof(StructureFieldComplex))
+        if (Item.GetType() != typeof(StructureFieldComplex))
         {
+            return;
+        }
+
         StructureFieldComplex complex = (StructureFieldComplex)Item;
 
         complex.Collapsed = !complex.Collapsed;
         ParentControl.UpdateView();
     }
+
+    private Bitmap? GetIconImage()
+    {
+        if (Item.GetType() != typeof(StructureFieldComplex))
+        {
+            return null;
+        }
+
+        StructureFieldComplex complex = (StructureFieldComplex)Item;
+
+        int size = Convert.ToInt32(Math.Round(DepthSize * 0.6));
+
+        return complex.Collapsed
+            ? IconChar.PlusSquare.ToBitmap(IconFont.Auto, size, ForeColor)
+            : IconChar.MinusSquare.ToBitmap(IconFont.Auto, size, ForeColor);
+    }
+
+    private void UpdateCache()
+    {
+        int n = Depth;
+        int h = ItemHeight;
+        int w = DepthSize;
+
+        _iconCache = new(w * (n + 1), h);
+
+        if (_ladder.Count < Depth)
+        {
+            return;
+        }
+
+        Graphics g = Graphics.FromImage(_iconCache);
+
+        Pen pen = new(Color.FromArgb(127, ForeColor.R, ForeColor.G, ForeColor.B), 1);
+        pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dot;
+
+        float cy = 0.5f * h;
+
+        for (int i = 0; i < n; i++)
+        {
+            float cx = (i + 1.5f) * w;
+
+            switch (_ladder[i])
+            {
+                case LadderType.Last:
+                    g.DrawLine(pen, cx, 0, cx, cy);
+                    break;
+                case LadderType.Through:
+                    g.DrawLine(pen, cx, 0, cx, h);
+                    break;
+                case LadderType.Empty:
+                default:
+                    break;
+            }
+
+            if (i == n - 1)
+            {
+                g.DrawLine(pen, cx, cy, (i + 2) * w, cy);
+            }
+        }
+
+        Bitmap? icon = GetIconImage();
+
+        if (icon is not null)
+        {
+            float cx = (n + 0.5f) * w;
+
+            g.FillRectangle(
+                new SolidBrush(BackColor),
+                cx - 0.5f * icon.Width - 1,
+                cy - 0.5f * icon.Height - 1,
+                icon.Width + 2,
+                icon.Height + 2
+            );
+
+            g.DrawImage(icon, new PointF(cx - 0.5f * icon.Width, cy - 0.5f * icon.Height));
+        }
+
+        g.Save();
     }
 }

Pf2eViewer/EntityTreeViewer/StructureBuilder.cs

@@ -141,6 +141,13 @@ internal enum StructureFieldType
     Reference,
 }
 
+internal enum LadderType
+{
+    Empty,
+    Last,
+    Through,
+}
+
 internal abstract class StructureField(StructureBuilder builder, string name, int depth)
 {
     public readonly string Name = name;