51 lines
1.8 KiB
C#
51 lines
1.8 KiB
C#
using Lattice.Core.Docking.Models;
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using Microsoft.UI.Input;
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using Microsoft.UI.Xaml.Controls;
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using Microsoft.UI.Xaml.Input;
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using Microsoft.UI.Xaml.Media;
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using System;
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namespace Lattice.UI;
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public class LatticeSplitter : Control
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{
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public LatticeSplitter()
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{
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this.DefaultStyleKey = typeof(LatticeSplitter);
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this.ManipulationMode = ManipulationModes.TranslateX | ManipulationModes.TranslateY;
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this.PointerEntered += (s, e) =>
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this.ProtectedCursor = InputSystemCursor.Create(InputSystemCursorShape.SizeWestEast);
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this.PointerExited += (s, e) =>
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this.ProtectedCursor = null;
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this.ManipulationDelta += OnManipulationDelta;
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}
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private void OnManipulationDelta(object sender, ManipulationDeltaRoutedEventArgs e)
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{
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// 1. Находим модель DockGroup через DataContext
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if (this.DataContext is not DockGroup group) return;
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// 2. Находим родительский Grid, чтобы знать общие размеры
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if (VisualTreeHelper.GetParent(this) is not Grid parentGrid ||
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parentGrid.ActualWidth <= 0 || parentGrid.ActualHeight <= 0)
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return;
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double totalSize = group.Orientation == SplitDirection.Horizontal
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? parentGrid.ActualWidth
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: parentGrid.ActualHeight;
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if (totalSize <= 0) return;
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// 3. Вычисляем изменение Ratio (от -1.0 до 1.0)
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double delta = group.Orientation == SplitDirection.Horizontal
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? e.Delta.Translation.X
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: e.Delta.Translation.Y;
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double ratioChange = delta / totalSize;
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// 4. Обновляем модель (с ограничением от 0.05 до 0.95)
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group.SplitRatio = Math.Clamp(group.SplitRatio + ratioChange, 0.05, 0.95);
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}
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} |