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

namespace PaintDotNet.Annotation.Measure
{
    /// <summary>
    /// 测量->多边形测量->矩形
    /// </summary>
    public class ToolMeasureRectangle : ToolMeasureObject
    {
        private static MeasureRectangle newRectangle;
        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)
            {
                if (newRectangle == null)
                {
                    Point p = GetEventPointInArea(drawArea, e.Location);
                    newRectangle = new MeasureRectangle(drawArea, new Point(p.X, p.Y), new Point(p.X + 1, p.Y + 1), true);
                    newRectangle.ISurfaceBox = drawArea;
                    AddNewObject(drawArea, newRectangle);
                }
            }
            else
            {
                if(newRectangle != null)
                {
                    if (e.Clicks == 2)
                    {
                        for (int i = 0; i < drawArea.GraphicsList.Count; i++)
                        {
                            if (drawArea.GraphicsList[i].drawToolType == newRectangle.drawToolType)
                            {
                                drawArea.GraphicsList.RemoveAt(i);
                                break;
                            }
                        }
                    }
                }
                if (!drawArea.ContinuousDrawingMeasure())
                {
                    drawArea.ActiveTool = DrawToolType.Pointer;
                }

                if (e.Button == MouseButtons.Right && e.Clicks == 1) { 
                    OnMouseNotLeftDown(drawArea, null);
                }

            }
        }

        /// <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 (newRectangle != null)
            {
                newRectangle.moved = true;
                moved = true;
                if (drawArea.GraphicsList[0] != null)
                {
                    drawArea.GraphicsList[0].MoveHandleTo(pointscroll, 2);
                    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 (newRectangle.area == 0)
                {
                    return;
                }

                if (!moved)
                {
                    if (newRectangle != null)
                    {
                        for (int i = 0; i < drawArea.GraphicsList.Count; i++)
                        {
                            if (drawArea.GraphicsList[i].drawToolType == newRectangle.drawToolType)
                            {
                                drawArea.GraphicsList.RemoveAt(i);
                                break;
                            }
                        }
                    }
                }
                moved = false;
                if (newRectangle != null)
                {
                    newRectangle.pointChange = false;
                    newRectangle.mouseUpPointChange = false;
                }
                newRectangle = null;
                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)
        {

        }

        public static void beginWithNewObject()
        {
            newRectangle = null;
        }
    }
}