add:浮动栏自定义

Ink Canvas/Controls/Toolbar/ToolbarRegistry.cs

@@ -0,0 +1,161 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Reflection;
+using System.Windows;
+using System.Windows.Controls;
+using Ink_Canvas.Helpers;
+
+namespace Ink_Canvas.Controls.Toolbar
+{
+    /// <summary>
+    /// 扫描当前程序集里的 IToolbarItem 实现，按用户配置（Settings.Toolbar）排序/过滤后注入到目标容器。
+    /// </summary>
+    public static class ToolbarRegistry
+    {
+        private static List<IToolbarItem> _items;
+
+        public static IReadOnlyList<IToolbarItem> Discover()
+        {
+            if (_items != null) return _items;
+
+            var itemType = typeof(IToolbarItem);
+            _items = Assembly.GetExecutingAssembly()
+                .GetTypes()
+                .Where(t => !t.IsAbstract && !t.IsInterface && itemType.IsAssignableFrom(t))
+                .Select(t =>
+                {
+                    try { return (IToolbarItem)Activator.CreateInstance(t); }
+                    catch (Exception ex)
+                    {
+                        LogHelper.WriteLogToFile($"ToolbarRegistry: 实例化 {t.FullName} 失败: {ex.Message}", LogHelper.LogType.Warning);
+                        return null;
+                    }
+                })
+                .Where(i => i != null)
+                .ToList();
+            return _items;
+        }
+
+        /// <summary>按 slot 分配工具栏条目到对应容器。调用者负责清空目标容器里要被接管的旧内容。</summary>
+        public static void Populate(IToolbarHost host, IDictionary<ToolbarSlot, Panel> slots, ToolbarLayoutSettings layout)
+        {
+            if (host == null || slots == null) return;
+            layout = layout ?? new ToolbarLayoutSettings();
+
+            var grouped = new Dictionary<ToolbarSlot, List<(IToolbarItem item, ToolbarItemConfig cfg)>>();
+            foreach (var item in Discover())
+            {
+                if (!layout.Items.TryGetValue(item.Id, out var cfg))
+                {
+                    cfg = new ToolbarItemConfig
+                    {
+                        Visible = item.DefaultVisible,
+                        Order = item.DefaultOrder,
+                        Slot = item.DefaultSlot,
+                        Position = item.DefaultPosition,
+                        AnchorName = item.DefaultAnchorName
+                    };
+                }
+                if (!cfg.Visible) continue;
+                if (!grouped.TryGetValue(cfg.Slot, out var list))
+                {
+                    list = new List<(IToolbarItem, ToolbarItemConfig)>();
+                    grouped[cfg.Slot] = list;
+                }
+                list.Add((item, cfg));
+            }
+
+            foreach (var kv in grouped)
+            {
+                if (!slots.TryGetValue(kv.Key, out var container) || container == null) continue;
+                InjectIntoContainer(host, container, kv.Value);
+            }
+        }
+
+        private static void InjectIntoContainer(IToolbarHost host, Panel container,
+            List<(IToolbarItem item, ToolbarItemConfig cfg)> entries)
+        {
+            // 按 Position 分桶，每桶内按 Order 升序。
+            var prepend = entries.Where(e => e.cfg.Position == ToolbarInsertPosition.Prepend).OrderBy(e => e.cfg.Order).ToList();
+            var append = entries.Where(e => e.cfg.Position == ToolbarInsertPosition.Append).OrderBy(e => e.cfg.Order).ToList();
+            var before = entries.Where(e => e.cfg.Position == ToolbarInsertPosition.BeforeAnchor).ToList();
+            var after = entries.Where(e => e.cfg.Position == ToolbarInsertPosition.AfterAnchor).ToList();
+
+            var prependIndex = 0;
+            foreach (var entry in prepend)
+            {
+                var view = BuildAndRegister(host, entry.item);
+                if (view == null) continue;
+                container.Children.Insert(prependIndex++, view);
+            }
+
+            foreach (var entry in append)
+            {
+                var view = BuildAndRegister(host, entry.item);
+                if (view == null) continue;
+                container.Children.Add(view);
+            }
+
+            foreach (var group in before.GroupBy(e => e.cfg.AnchorName))
+            {
+                var anchor = FindNamedChild(container, group.Key);
+                if (anchor == null)
+                {
+                    LogHelper.WriteLogToFile($"ToolbarRegistry: 未找到锚点 '{group.Key}' (BeforeAnchor)", LogHelper.LogType.Warning);
+                    continue;
+                }
+                var idx = container.Children.IndexOf(anchor);
+                foreach (var entry in group.OrderBy(e => e.cfg.Order))
+                {
+                    var view = BuildAndRegister(host, entry.item);
+                    if (view == null) continue;
+                    container.Children.Insert(idx++, view);
+                }
+            }
+
+            foreach (var group in after.GroupBy(e => e.cfg.AnchorName))
+            {
+                var anchor = FindNamedChild(container, group.Key);
+                if (anchor == null)
+                {
+                    LogHelper.WriteLogToFile($"ToolbarRegistry: 未找到锚点 '{group.Key}' (AfterAnchor)", LogHelper.LogType.Warning);
+                    continue;
+                }
+                var idx = container.Children.IndexOf(anchor) + 1;
+                foreach (var entry in group.OrderBy(e => e.cfg.Order))
+                {
+                    var view = BuildAndRegister(host, entry.item);
+                    if (view == null) continue;
+                    container.Children.Insert(idx++, view);
+                }
+            }
+        }
+
+        private static UIElement FindNamedChild(Panel container, string name)
+        {
+            if (string.IsNullOrEmpty(name)) return null;
+            foreach (UIElement child in container.Children)
+            {
+                if (child is FrameworkElement fe && fe.Name == name) return child;
+            }
+            return null;
+        }
+
+        private static FrameworkElement BuildAndRegister(IToolbarHost host, IToolbarItem item)
+        {
+            try
+            {
+                var view = item.BuildView(host);
+                if (view == null) return null;
+                host.RegisterView(item.Id, view);
+                return view;
+            }
+            catch (Exception ex)
+            {
+                LogHelper.WriteLogToFile($"ToolbarRegistry: 构建 {item.Id} 失败: {ex.Message}", LogHelper.LogType.Warning);
+                return null;
+            }
+        }
+    }
+}