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


namespace PaintDotNet.Annotation.FieldView
{
    public class ToolViewRectangleEx : ToolObject
    {
        private static ViewRectangleEx rect;

        /// <summary>
        /// 鼠标按下事件
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public static void OnMouseDown(ISurfaceBox surfaceBox, MouseEventArgs e)
        {
            WorkFlowCreat(surfaceBox, e, EventType.Down);
        }

        /// <summary>
        /// 鼠标移动事件
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public static void OnMouseMove(ISurfaceBox drawArea, MouseEventArgs e)
        {
            WorkFlowCreat(drawArea, e, EventType.Move);
            drawArea.Refresh();
            drawArea.GraphicsList.Dirty = true;
        }

        static void Done(ISurfaceBox drawArea)
        {
            drawArea.ActiveTool = DrawToolType.Pointer;
            drawArea.GraphicsList.OnSelectChanged();
            drawArea.Refresh();
            rect = null;
            _step = 0;
        }

        static void Cancel(ISurfaceBox drawArea)
        {
            if (rect != null)
            {
                drawArea.GraphicsList.RemoveObj(rect);
            }
            Done(drawArea);
        }

        static int _step = 0;
        private static void WorkFlowCreat(ISurfaceBox surfaceBox, MouseEventArgs e, EventType type)
        {
            Point p = GetEventPointInArea(surfaceBox, e.Location);
            if (e.Button == MouseButtons.Right)
                Cancel(surfaceBox);
            switch (_step)
            {
                case 0:
                    if (e.Button == MouseButtons.Left && type == EventType.Down)
                    {
                        rect = new ViewRectangleEx(p);
                        rect.ISurfaceBox = surfaceBox;
                        rect.combineMode = surfaceBox.GetCombineMode();
                        AddNewObjectForView(surfaceBox, rect);
                        _step++;
                    }
                    break;
                case 1:
                    if (e.Button == MouseButtons.Left && type == EventType.Down)
                    {
                        _step++;
                    }
                    else if (type == EventType.Move)
                    {
                        rect.CreatStep(p, _step);
                    }
                    break;
                case 2:
                    if (e.Button == MouseButtons.Left && type == EventType.Down)
                    {
                        Done(surfaceBox);
                    }
                    else if (type == EventType.Move)
                    {
                        rect.CreatStep(p, _step);
                    }
                    break;
            }
        }

        private enum EventType
        {
            Down, Up, Move
        }

        #region Useless
        public static void OnMouseUp(ISurfaceBox drawArea, MouseEventArgs 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()
        {
        }
        #endregion
    }
}