ELK/Furnace/FurnaceUI/Views/Editors/RecipeGasXmlView.xaml.cs

using DocumentFormat.OpenXml.Drawing.Wordprocessing;
using MECF.Framework.UI.Core.DxfScript;
using Newtonsoft.Json.Linq;
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows;
using System.Windows.Controls;
using System.Windows.Data;
using System.Windows.Documents;
using System.Windows.Input;
using System.Windows.Media;
using System.Windows.Media.Imaging;
using System.Windows.Navigation;
using System.Windows.Shapes;
using System.Windows.Threading;

namespace FurnaceUI.Views.Editors
{
    /// <summary>
    /// RecipeGasXmlView.xaml 的交互逻辑
    /// </summary>

    public partial class RecipeGasXmlView : UserControl
    {

        GasDxfDocument GasMap = null;
        private DispatcherTimer _refreshTimer;
        public RecipeGasXmlView()
        {
            InitializeComponent();
            GasMapProvider.GasMap = GasMap = new GasDxfDocument(draw, true, "GasViewXml.xml");
            draw.ClipToBounds = true;
            draw.Cursor = Cursors.Arrow;


            GasMap.LoadGas();
            GasMap.ParseConditions();


        }


        #region 画布事件
        private bool dragged = false;
        private System.Windows.Point mouseDownPoint = new System.Windows.Point(-1, -1);
        private Dictionary<UIElement, Rect> initialRect = new Dictionary<UIElement, Rect>();
        #region 鼠标操作：放大/缩小/拖拽/点击

        // 处理鼠标移动事件
        private void Canvas_MouseMove(object sender, MouseEventArgs e)
        {

            if (GasMap == null || GasMap.Lines == null) return;
            if (e.LeftButton == MouseButtonState.Pressed)
            {
                //拖动状态
                if (mouseDownPoint.X > 0 && mouseDownPoint.Y > 0)
                {

                    dragged = true;

                }

            }

        }

        // 处理鼠标左键松开事件
        private void Canvas_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
        {
            var endPoint = e.GetPosition(draw);
            if (dragged)
            {
                DraggedHandle(endPoint);
                return;
            }
            ClickHandle(endPoint);
        }

        // 处理鼠标左键按下事件
        private void Canvas_MouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {

            var startPoint = e.GetPosition(draw);
            DownHandle(startPoint);
            CheckIfMouseIsOutOfCanvas(startPoint, draw);
            GasMap.ModifyDrag();

        }
        // 处理鼠标滚轮事件
        private void Canvas_MouseWheel(object sender, MouseWheelEventArgs e)
        {

            if (e.Delta > 0)
            {
                ZoomInCmdClick(null, null);//放大

            }
            else
            {
                ZoomOutCmdClick(null, null);// 缩小

            }
        }

        #endregion

        #region 触摸操作：点击/拖拽

        private System.Windows.Point? touchStartPoint = null;
        private const double DragThreshold = 5.0;

        private void Canvas_TouchUp(object sender, TouchEventArgs e)
        {

            if (touchStartPoint.HasValue)
            {
                var endPoint = e.GetTouchPoint(draw).Position;
                double distance = Math.Sqrt(Math.Pow(endPoint.X - touchStartPoint.Value.X, 2) + Math.Pow(endPoint.Y - touchStartPoint.Value.Y, 2));

                if (distance < DragThreshold)
                {
                    // 触发点击事件
                    ClickHandle(endPoint);
                }
                else
                {
                    // 触发拖拽完成事件
                    DraggedHandle(endPoint);
                }

                touchStartPoint = null;
                draw.ReleaseTouchCapture(e.TouchDevice);
            }
        }

        private void Canvas_TouchDown(object sender, TouchEventArgs e)
        {
            var startPoint = e.GetTouchPoint(draw).Position;
            DownHandle(startPoint);
            CheckIfMouseIsOutOfCanvas(startPoint, draw);
            draw.CaptureTouch(e.TouchDevice);
            GasMap.ModifyDrag();
        }
        #endregion

        #region 多指操作 ：放大/缩小

        private void Canvas_ManipulationStarting(object sender, ManipulationStartingEventArgs e)
        {
            e.ManipulationContainer = draw;  // 设置操作容器为画布本身
            e.Mode = ManipulationModes.All;  // 启用所有操作类型
        }

        private void Canvas_ManipulationDelta(object sender, ManipulationDeltaEventArgs e)
        {
            if (e.DeltaManipulation.Scale.X > 1.0 && e.DeltaManipulation.Scale.Y > 1.0)
            {
                ZoomInCmdClick(null, null);//放大
            }
            else if (e.DeltaManipulation.Scale.X < 1.0 && e.DeltaManipulation.Scale.Y < 1.0)
            {
                ZoomOutCmdClick(null, null);// 缩小
            }
            e.Handled = true;
        }
        private void Canvas_ManipulationCompleted(object sender, ManipulationCompletedEventArgs e)
        {


        }
        #endregion


        private void ZoomInCmdClick(object sender, RoutedEventArgs e)
        {
            double rate = 1;
            if (GasMap.Scale < 10)
            {
                GasMap.Scale += 0.5;
                rate = GasMap.Scale / (GasMap.Scale - 0.5);
            }
            double backupDragX = GasMap.dragX;
            double backupDragY = GasMap.dragY;
            GasMap.dragX = 0;
            GasMap.dragY = 0;
            GasMap.Draw();
            GasMap.dragX = backupDragX * rate;
            GasMap.dragY = backupDragY * rate;
            GasMap.DrawMovedImage();

        }
        private void ZoomOutCmdClick(object sender, RoutedEventArgs e)
        {
            double rate = 1;
            if (GasMap.Scale > 1)
            {
                GasMap.Scale -= 0.5;
                rate = GasMap.Scale / (GasMap.Scale + 0.5);
            }
            else
            {
                GasMap.Scale = 1;
                GasMap.dragX = 0;
                GasMap.dragY = 0;
            }

            double backupDragX = GasMap.dragX;
            double backupDragY = GasMap.dragY;
            GasMap.dragX = 0;
            GasMap.dragY = 0;
            GasMap.Draw();
            GasMap.dragX = backupDragX * rate;
            GasMap.dragY = backupDragY * rate;
            GasMap.DrawMovedImage();

        }
        private void CheckIfMouseIsOutOfCanvas(Point mousePosition, Canvas canvas)
        {
            double canvasWidth = canvas.ActualWidth;
            double canvasHeight = canvas.ActualHeight;

            if (mousePosition.X < 0 || mousePosition.Y < 0 || mousePosition.X > canvasWidth || mousePosition.Y > canvasHeight)
            {
                this.CaptureMouse();
            }

        }
        private void DraggedHandle(System.Windows.Point point)
        {
            dragged = false;
            GasMap.dragX += point.X - mouseDownPoint.X;
            GasMap.dragY += point.Y - mouseDownPoint.Y;
            GasMap.DrawMovedImage();
            mouseDownPoint.X = -1;
            mouseDownPoint.Y = -1;


        }
        private void ClickHandle(System.Windows.Point point)
        {

            var x = GasMap.ScreenToDxfX(point.X);
            var y = GasMap.ScreenToDxfY(point.Y);

            GasBaseShape shape = GasMap.GetShapeByPosition(x, y);

            if (shape != null)
            {

                GasMap.DrawShape(shape, true);
                GasMapProvider.GasMap.SelectedShape = GasMap.SelectedShape = shape;
                if (shape.ClickCondition != null)
                {

                    shape.ClickCondition.Execute();

                    GasMap.Draw();
                }
            }

        }
        private void DownHandle(System.Windows.Point point)
        {
            mouseDownPoint.X = point.X;
            mouseDownPoint.Y = point.Y;
            touchStartPoint = point;

        }
        #endregion
    }
}