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

namespace PaintDotNet.Annotation.Measure
{
    /// <summary>
    /// 测量->多边形测量->轨迹多边形
    /// </summary>
    public class ToolMeasureTracePolygon : ToolMeasureObject
    {
        private static MeasureTracePolygon newTracePolygon;
        private static bool moved = false;
        /// <summary>
        /// Left nouse button is pressed
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public static void OnMouseDown(ISurfaceBox drawArea, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left && e.Clicks != 2)
            {
                Point p = GetEventPointInArea(drawArea, e.Location);
                newTracePolygon = new MeasureTracePolygon(drawArea, p.X, p.Y, true);
                newTracePolygon.ISurfaceBox = drawArea;
                AddNewObject(drawArea, newTracePolygon);
            }
            else
            {
                newTracePolygon = null;
                if (!drawArea.ContinuousDrawingMeasure())
                {
                    OnMouseUpTwo(drawArea, e);
                }
                OnMouseNotLeftDown(drawArea, newTracePolygon);
            }
        }

        /// <summary>
        /// 鼠标移动，需要进行绘制
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public static void OnMouseMove(ISurfaceBox drawArea, MouseEventArgs e)
        {
            Point pointscroll = GetEventPointInArea(drawArea, e.Location);

            if (e.Button == MouseButtons.Left)
            {
                if (newTracePolygon != null)
                    newTracePolygon.moved = true;
                moved = true;
                if (newTracePolygon != null)
                {
                    newTracePolygon.setNextPoint(pointscroll);
                    drawArea.Refresh();
                    drawArea.GraphicsList.Dirty = true;
                }
            }
        }

        /// <summary>
        /// 鼠标抬起事件
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public static void OnMouseUp(ISurfaceBox drawArea, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                if (!moved)
                {
                    if (newTracePolygon != null)
                    {
                        for (int i = 0; i < drawArea.GraphicsList.Count; i++)
                        {
                            if (drawArea.GraphicsList[i].drawToolType == newTracePolygon.drawToolType)
                            {
                                drawArea.GraphicsList.RemoveAt(i);
                                break;
                            }
                        }
                    }
                }
                moved = false;
                if (newTracePolygon != null)
                    newTracePolygon.pointChange = false;
                if (!drawArea.ContinuousDrawingMeasure())
                    drawArea.ActiveTool = DrawToolType.Pointer;
                OnMouseUpTwo(drawArea, e);
            }
        }

        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)
        {

        }

        /// <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()
        {
            newTracePolygon = null;
        }
    }
}