serein-flow/WorkBench/Node/View/ConditionRegionControl.xaml.cs

using Serein.Flow;
using Serein.Flow.NodeModel;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Controls.Primitives;
using System.Windows.Input;
using static Serein.WorkBench.MainWindow;

namespace Serein.WorkBench.Node.View
{
    /// <summary>
    /// ConditionRegion.xaml 的交互逻辑
    /// </summary>
    public partial class ConditionRegionControl : NodeControlBase
    {
        private Point _dragStartPoint;
        public ConditionRegionControl() : base()
        {
            InitializeComponent();
        }

        public ConditionRegionControl(CompositeConditionNode node) : base(node)
        {
            Node = node;
            InitializeComponent();
        }

        #region 动态调整区域大小
        private void ResizeTop_DragDelta(object sender, DragDeltaEventArgs e)
        {
            double oldHeight = Height;
            double newHeight = Math.Max(MinHeight, oldHeight - e.VerticalChange);
            Height = newHeight;
            Canvas.SetTop(this, Canvas.GetTop(this) + (oldHeight - newHeight));
        }

        private void ResizeBottom_DragDelta(object sender, DragDeltaEventArgs e)
        {
            double newHeight = Math.Max(MinHeight, Height + e.VerticalChange);
            Height = newHeight;
        }

        private void ResizeLeft_DragDelta(object sender, DragDeltaEventArgs e)
        {
            double oldWidth = Width;
            double newWidth = Math.Max(MinWidth, oldWidth - e.HorizontalChange);
            Width = newWidth;
            Canvas.SetLeft(this, Canvas.GetLeft(this) + (oldWidth - newWidth));
        }

        private void ResizeRight_DragDelta(object sender, DragDeltaEventArgs e)
        {
            double newWidth = Math.Max(MinWidth, Width + e.HorizontalChange);
            Width = newWidth;
        }

        #endregion


        /// <summary>
        /// 添加条件控件
        /// </summary>
        /// <param name="condition"></param>
        public void AddCondition(NodeControlBase node)
        {
            ((CompositeConditionNode)Node).AddNode((SingleConditionNode)node.Node);

            this.Width += node.Width;
            this.Height += node.Height;
            ConditionsListBox.Items.Add(node);
        }

      

        private void ConditionsListBox_Drop(object sender, DragEventArgs e)
        {
            e.Handled = true;
        }

        // Mouse event handlers for dragging
        private void TypeText_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            _dragStartPoint = e.GetPosition(null);
        }

        private void TypeText_MouseMove(object sender, MouseEventArgs e)
        {
            Point mousePos = e.GetPosition(null);
            Vector diff = _dragStartPoint - mousePos;

            if (e.LeftButton == MouseButtonState.Pressed &&
                (Math.Abs(diff.X) > SystemParameters.MinimumHorizontalDragDistance ||
                 Math.Abs(diff.Y) > SystemParameters.MinimumVerticalDragDistance))
            {
                if (sender is TextBlock typeText)
                {
                    var dragData = new DataObject(MouseNodeType.RegionType, typeText.Tag);
                    DragDrop.DoDragDrop(typeText, dragData, DragDropEffects.Move);
                }
            }
        }

        

        /*private void TypeText_MouseMove(object sender, MouseEventArgs e)
        {
            Point mousePos = e.GetPosition(null);
            Vector diff = _dragStartPoint - mousePos;

            if (e.LeftButton == MouseButtonState.Pressed &&
                (Math.Abs(diff.X) > SystemParameters.MinimumHorizontalDragDistance ||
                 Math.Abs(diff.Y) > SystemParameters.MinimumVerticalDragDistance))
            {
                TextBlock typeText = sender as TextBlock;
                if (typeText != null)
                {
                    DataObject dragData = new DataObject("Type", typeText.Tag);
                    DragDrop.DoDragDrop(typeText, dragData, DragDropEffects.Move);
                }
            }
        }
*/

    }
}