using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace GeoSigmaViewer
{
    public partial class PointAddDialog : Form
    {
        private Timer myTimer = new Timer();
        private Drawer drawer;
        private Point2D oldPt = new Point2D();


        public PointAddDialog(ref Drawer drawer)
        {
            InitializeComponent();
            angleTextBox.Text = "0.0";
            this.drawer = drawer;
            myTimer.Tick += new EventHandler(TimerEventProcessor);

            // Sets the timer interval to 0.1 seconds.
            myTimer.Interval = 100;
            myTimer.Start();
        }

        private void TimerEventProcessor(Object myObject, EventArgs myEventArgs)
        {
            Point2D pt = new Point2D();
            drawer.Geo.GetPoint2DFromItem(out pt);

            //<修复Bug:手工输入坐标无效>
            if (Math.Abs(pt.x) < 0.000001 && Math.Abs(pt.y) < 0.000001)
            {
                return;
            }

            if (Math.Abs(pt.x - oldPt.x) < 0.000001
                && Math.Abs(pt.y - oldPt.y) < 0.000001)
            {
                return;
            }
            oldPt.x = pt.x;
            oldPt.y = pt.y;
            //</修复Bug:手工输入坐标无效>

            xCoordTextBox.Text = pt.x.ToString();
            yCoordTextBox.Text = pt.y.ToString();
           // angleTextBox.Text = "0.0";
        }

        private void PointAddDialog_FormClosing(object sender, FormClosingEventArgs e)
        {
            myTimer.Stop();
            drawer.Geo.CancelDisplayPointInItem();
            drawer.Geo.EnableRedraw(true);
            drawer.ReDraw();
            drawer.ActiveTool = DrawToolType.Select;
        }

        private void cancelButton_Click(object sender, EventArgs e)
        {
            Close();
        }

        private void okButton_Click(object sender, EventArgs e)
        {
            //如果是连续绘点，点击"确定"按钮后，不添加点。
            //因为鼠标点击绘图区后，立刻会添加一个点。这个点的坐标也会填写到界面上。
            //若点击"确定"，添加此点。则会重复添加点了。
            if (continueCheckBox.CheckState != CheckState.Checked)
            {
                if (AddPoint() == false)
                {
                    return ;
                }
            }
            Close();
        }

        private void continueCheckBox_CheckStateChanged(object sender, EventArgs e)
        {
            if (continueCheckBox.CheckState == CheckState.Checked)
                drawer.Geo.ChangePointAddedMode(1);
            else
                drawer.Geo.ChangePointAddedMode(0);
        }

        private void nextButton_Click(object sender, EventArgs e)
        {
            AddPoint();
        }

        private bool AddPoint()
        {
            Point2D pt = new Point2D();
            pt.pointName = pointNameTextBox.Text;

            try
            {
                pt.x = float.Parse(xCoordTextBox.Text);
                pt.y = float.Parse(yCoordTextBox.Text);
                pt.angle = float.Parse(angleTextBox.Text);
            }
            catch (ArgumentNullException )
            {
                MessageBox.Show("输入信息有误,请重新输入。", "出错信息");
                return false;
            }
            catch (FormatException )
            {
                MessageBox.Show("输入信息有误,请重新输入。", "出错信息");
                return false;
            }
            catch (OverflowException ofEx)
            {
                MessageBox.Show("输入信息有误,请重新输入。", "出错信息");
                return false;
            }

            drawer.Geo.AddPoint2DToDoc(ref pt);
            return true;
        }

        private void pointNameTextBox_KeyUp(object sender, KeyEventArgs e)
        {
            if (pointNameTextBox.Text == null)
                return;

            if (pointNameTextBox.Text.Length == 0)
                return;

            drawer.Geo.AddPointNameToItem(pointNameTextBox.Text);
            drawer.Geo.EnableRedraw(true);
            drawer.ReDraw();
        }

        private void angleTextBox_KeyUp(object sender, KeyEventArgs e)
        {
            double angle = 0;
            try
            {
                angle = float.Parse(angleTextBox.Text);
            }
            catch (Exception )
            {
                //TODO:log
                return ;
            }

            drawer.Geo.ChangeAnglgeToItem(angle);
            drawer.Geo.EnableRedraw(true);
            drawer.ReDraw();
        }
    }
}