Metis_xctg/Annotation/Measure/ToolMeasureLine.cs

using PaintDotNet.Annotation.Enum;
using System.Drawing;
using System.Windows.Forms;

namespace PaintDotNet.Annotation.Measure
{
    /// <summary>
    /// 测量->直线->直线
    /// </summary>
    public class ToolMeasureLine  : ToolMeasureObject
    {
        private static MeasureLine line;
        private static bool moved = false;

        public static void OnMouseDown(ISurfaceBox drawArea, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                Point pointscroll = GetEventPointInArea(drawArea, e.Location);
                if (line == null)
                {
                    line = new MeasureLine(drawArea, new Point(pointscroll.X, pointscroll.Y), new Point(pointscroll.X + 1, pointscroll.Y + 1));
                    line.ISurfaceBox = drawArea;                  
                    AddNewObject(drawArea, line);
                }
            }
            else
            {
                line = null;
                if (!drawArea.ContinuousDrawingMeasure())
                {
                    drawArea.ActiveTool = DrawToolType.Pointer;
                }
                OnMouseNotLeftDown(drawArea,line);
            }
        }
        public static void OnMouseMove(ISurfaceBox drawArea, MouseEventArgs e)
        {
            if (line != null)
            {
                line.moved = true;
                moved = true;
                Point pointscroll = GetEventPointInArea(drawArea, e.Location);
                if (line!= null)
                {
                    line.MoveHandleTo(pointscroll, 2);
                    drawArea.Refresh();
                    drawArea.GraphicsList.Dirty = true;
                }
            }
        }

        public static void OnMouseUp(ISurfaceBox drawArea, MouseEventArgs e)
        {

            //1、鼠标抬起的时候，先判断位置是不是等于第一个点
            //2、如果是第一个点，那就是点击，不是拖动
            //3、如果不是第一个点，那就画线
            try
            {
                if (e.Button == MouseButtons.Left)
                {
                    Point pointscroll = GetEventPointInArea(drawArea, e.Location);
                    if ((pointscroll.X == line.startPoint.X && pointscroll.Y == line.startPoint.Y))
                    {
                        return;
                    }

                    line.endPoint = pointscroll;

                    if (!moved)
                    {
                        if (line != null)
                        {
                            for (int i = 0; i < drawArea.GraphicsList.Count; i++)
                            {
                                if (drawArea.GraphicsList[i].drawToolType == line.drawToolType)
                                {
                                    drawArea.GraphicsList.RemoveAt(i);
                                    break;
                                }
                            }
                        }
                    }
                    moved = false;
                    if (line != null)
                    {
                        line.pointChange = false;
                        line.mouseUpPointChange = false;
                    }
                    line = null;
                    if (!drawArea.ContinuousDrawingMeasure())
                    {
                        drawArea.ActiveTool = DrawToolType.Pointer;
                    }
                    OnMouseUpTwo(drawArea, e);
                }
            }
            catch (System.Exception)
            {
            }
           
        }

        public static void OnMouseClick(ISurfaceBox drawArea, MouseEventArgs e)
        {

        }

        /// <summary>
        /// 鼠标左键双击
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public static void OnMouseLeftDoubleClick(ISurfaceBox surfacebox, MouseEventArgs e)
        {
            var abc = "str";
        }

        /// <summary>
        /// 删除按键
        /// </summary>
        /// <param name="surfacebox"></param>
        /// <param name="e"></param>
        public static void OnDelKeyDown(ISurfaceBox surfacebox, MouseEventArgs e)
        {

        }

        /// <summary>
        /// 删除划痕处理&污迹处理选择区域的痕迹
        /// </summary>
        /// <param name="surfacebox"></param>
        /// <param name="e"></param>
        public static void OnDel2KeyDown(ISurfaceBox surfacebox, MouseEventArgs e)
        {

        }

        /// <summary>
        /// 清空全部时调用该方法，将可能未绘制完的对象清空
        /// </summary>
        public static void beginWithNewObject()
        {
            line = null;
        }
    }
}