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

namespace PaintDotNet.Annotation.Label
{
    /// <summary>
    /// 标注->曲线->铅笔
    /// </summary>
    public class ToolPencil : ToolObject
    {
        private static Cursor cursor = new Cursor(PdnResources.GetResourceStream("Cursors.AnnotationPencil.cur"));

        private static DrawPencil newPolygon;

        /// <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)
            {
                Point p = GetEventPointInArea(drawArea, e.Location);
                // Create new polygon, add it to the list
                // and keep reference to it
                newPolygon = new DrawPencil(drawArea, p.X, p.Y);
                newPolygon.ISurfaceBox = drawArea;
                AddNewObject(drawArea, newPolygon);
            }
            else {
                OnMouseNotLeftDown(drawArea, null);
            }
        }

        /// <summary>
        /// Mouse move - resize new polygon
        /// </summary>
        /// <param name="drawArea"></param>
        /// <param name="e"></param>
        public static void OnMouseMove(ISurfaceBox drawArea, MouseEventArgs e)
        {
            Point p = GetEventPointInArea(drawArea, e.Location);
            drawArea.Cursor = cursor;

            if (e.Button != MouseButtons.Left)
                return;

            if (newPolygon == null)
                return;                 // precaution

            Point point = new Point(p.X, p.Y);
            newPolygon.AddPoint(point);

            drawArea.GraphicsList.Dirty = true;
            drawArea.Refresh();
        }

        public static void OnMouseUp(ISurfaceBox drawArea, MouseEventArgs e)
        {
            if (e.Button == MouseButtons.Left)
            {
                if (!drawArea.ContinuousDrawingLabel())
                {
                    newPolygon = null;
                    OnMouseUpTwo(drawArea, e);
                    drawArea.ActiveTool = DrawToolType.Pointer;
                }
            } 
        }

        public static void OnMouseClick(ISurfaceBox surfacebox, 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()
        {

        }
    }
}