Add initial project structure with basic view models, views, and resources

2026-09-14 19:46:46 +03:00
commit 45401645c6
68 changed files with 2538 additions and 0 deletions
@@ -0,0 +1,124 @@
+using Avalonia;
+using Avalonia.Controls;
+using Avalonia.Controls.Primitives;
+using Avalonia.Input;
+using Avalonia.Interactivity;
+using Avalonia.VisualTree;
+
+namespace CryptoPortfolio_Tracker.Behaviors;
+
+public static class WindowDragBehavior
+{
+    public static readonly AttachedProperty<bool> EnableWindowDragProperty =
+        AvaloniaProperty.RegisterAttached<Control, bool>(
+            "EnableWindowDrag",
+            typeof(WindowDragBehavior));
+
+    public static bool GetEnableWindowDrag(Control element) =>
+        element.GetValue(EnableWindowDragProperty);
+
+    public static void SetEnableWindowDrag(Control element, bool value) =>
+        element.SetValue(EnableWindowDragProperty, value);
+
+    static WindowDragBehavior()
+    {
+        EnableWindowDragProperty.Changed.AddClassHandler<Control>(OnEnableWindowDragChanged);
+    }
+
+    private static void OnEnableWindowDragChanged(Control control, AvaloniaPropertyChangedEventArgs e)
+    {
+        if (e.NewValue is true)
+        {
+            // Контрол ещё может не быть в визуальном дереве
+            if (control.IsLoaded)
+                Attach(control);
+            else
+                control.Loaded += OnControlLoaded;
+        }
+        else
+        {
+            control.Loaded -= OnControlLoaded;
+            Detach(control);
+        }
+    }
+
+    private static void OnControlLoaded(object? sender, RoutedEventArgs e)
+    {
+        if (sender is Control control)
+        {
+            control.Loaded -= OnControlLoaded;
+            Attach(control);
+        }
+    }
+
+    private static void Attach(Control control)
+    {
+        var topBar = FindInVisualTree<Border>(control, "PART_NavigationBar");
+        if (topBar is null)
+            return;
+
+        topBar.AddHandler(
+            InputElement.PointerPressedEvent,
+            OnTopBarPointerPressed,
+            RoutingStrategies.Tunnel);
+    }
+
+    private static void Detach(Control control)
+    {
+        var topBar = FindInVisualTree<Border>(control, "Border#PART_NavigationBar");
+        if (topBar is null)
+            return;
+
+        topBar.RemoveHandler(
+            InputElement.PointerPressedEvent,
+            OnTopBarPointerPressed);
+    }
+
+    private static void OnTopBarPointerPressed(object? sender, PointerPressedEventArgs e)
+    {
+        if (!e.GetCurrentPoint(null).Properties.IsLeftButtonPressed)
+            return;
+
+        // Проверяем — нажатие было на кнопке или интерактивном элементе?
+        if (e.Source is Visual source && IsInteractiveElement(source))
+            return;
+
+        if (sender is Visual visual &&
+            TopLevel.GetTopLevel(visual) is Window window)
+        {
+            window.BeginMoveDrag(e);
+        }
+    }
+    
+    private static bool IsInteractiveElement(Visual visual)
+    {
+        Visual? current = visual;
+        while (current is not null)
+        {
+            if (current is Button or ToggleButton or CheckBox or 
+                RadioButton or Slider or TextBox or ComboBox)
+                return true;
+
+            if (current is Border { Name: "Border#PART_NavigationBar" })
+                break;
+
+            current = current.GetVisualParent();
+        }
+        return false;
+    }
+
+    private static T? FindInVisualTree<T>(Visual root, string name) where T : Visual
+    {
+        if (root is T typed && root.Name == name)
+            return typed;
+
+        foreach (var child in root.GetVisualChildren())
+        {
+            var result = FindInVisualTree<T>(child, name);
+            if (result is not null)
+                return result;
+        }
+
+        return null;
+    }
+}