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

namespace PaintDotNet.Preview2
{
    public class CameraParamBar2 : UserControl
    {
        #region Designer
        private TextBox txbValue;
        private Panel panel1;
        private Label lblMin;
        private Label lblMax;
        public System.Windows.Forms.TrackBar tkbValue;
        private Label lblCaption;
        public CameraParamBar2()
        {
            InitializeComponent();
        }
        private void InitializeComponent()
        {
            this.lblCaption = new System.Windows.Forms.Label();
            this.txbValue = new System.Windows.Forms.TextBox();
            this.panel1 = new System.Windows.Forms.Panel();
            this.lblMax = new System.Windows.Forms.Label();
            this.lblMin = new System.Windows.Forms.Label();
            this.tkbValue = new System.Windows.Forms.TrackBar();
            this.panel1.SuspendLayout();
            ((System.ComponentModel.ISupportInitialize)(this.tkbValue)).BeginInit();
            this.SuspendLayout();
            // 
            // lblCaption
            // 
            this.lblCaption.Dock = System.Windows.Forms.DockStyle.Left;
            this.lblCaption.Location = new System.Drawing.Point(0, 0);
            this.lblCaption.Name = "lblCaption";
            this.lblCaption.Padding = new System.Windows.Forms.Padding(0, 2, 0, 0);
            this.lblCaption.Size = new System.Drawing.Size(69, 32);
            this.lblCaption.TabIndex = 0;
            this.lblCaption.Text = "ParmName";
            // 
            // txbValue
            // 
            this.txbValue.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
            this.txbValue.Dock = System.Windows.Forms.DockStyle.Right;
            this.txbValue.Location = new System.Drawing.Point(487, 0);
            this.txbValue.Name = "txbValue";
            this.txbValue.Size = new System.Drawing.Size(40, 21);
            this.txbValue.TabIndex = 4;
            this.txbValue.Text = "0";
            this.txbValue.WordWrap = false;
            this.txbValue.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.txbValue_KeyPress);
            // 
            // panel1
            // 
            this.panel1.Controls.Add(this.lblMax);
            this.panel1.Controls.Add(this.lblMin);
            this.panel1.Controls.Add(this.tkbValue);
            this.panel1.Dock = System.Windows.Forms.DockStyle.Fill;
            this.panel1.Location = new System.Drawing.Point(69, 0);
            this.panel1.Name = "panel1";
            this.panel1.Padding = new System.Windows.Forms.Padding(0, 0, 4, 0);
            this.panel1.Size = new System.Drawing.Size(418, 32);
            this.panel1.TabIndex = 5;
            // 
            // lblMax
            // 
            this.lblMax.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Right)));
            this.lblMax.Location = new System.Drawing.Point(383, 18);
            this.lblMax.Name = "lblMax";
            this.lblMax.Size = new System.Drawing.Size(35, 12);
            this.lblMax.TabIndex = 2;
            this.lblMax.Text = "10000";
            this.lblMax.TextAlign = System.Drawing.ContentAlignment.TopRight;
            // 
            // lblMin
            // 
            this.lblMin.AutoSize = true;
            this.lblMin.Location = new System.Drawing.Point(3, 18);
            this.lblMin.Name = "lblMin";
            this.lblMin.Size = new System.Drawing.Size(11, 12);
            this.lblMin.TabIndex = 1;
            this.lblMin.Text = "0";
            // 
            // tkbValue
            // 
            this.tkbValue.AutoSize = false;
            this.tkbValue.Dock = System.Windows.Forms.DockStyle.Top;
            this.tkbValue.Location = new System.Drawing.Point(0, 0);
            this.tkbValue.Name = "tkbValue";
            this.tkbValue.Size = new System.Drawing.Size(414, 20);
            this.tkbValue.TabIndex = 3;
            this.tkbValue.TabStop = false;
            this.tkbValue.Text = "metroTrackBar1";
            this.tkbValue.TickStyle = System.Windows.Forms.TickStyle.None;
            this.tkbValue.Scroll += new System.EventHandler(this.tkbValue_Scroll);
            // 
            // CameraParamBar2
            // 
            this.AutoSizeMode = System.Windows.Forms.AutoSizeMode.GrowAndShrink;
            this.Controls.Add(this.panel1);
            this.Controls.Add(this.txbValue);
            this.Controls.Add(this.lblCaption);
            this.Name = "CameraParamBar2";
            this.Size = new System.Drawing.Size(527, 32);
            this.panel1.ResumeLayout(false);
            this.panel1.PerformLayout();
            ((System.ComponentModel.ISupportInitialize)(this.tkbValue)).EndInit();
            this.ResumeLayout(false);
            this.PerformLayout();

        }
        #endregion

        public event Action<int> OnValueChange;

        /// <summary>
        /// 保留小数位数
        /// </summary>
        public int DecimalPalces { get; set; } = -1;

        public string Caption
        {
            get { return lblCaption.Text; }
            set {
                if (!value.Contains(":"))
                    value = value + ":";
                lblCaption.Text = value; }
        }

        /// <summary>
        /// 值为浮点数
        /// </summary>
        public bool IsFloat
        {
            get; set;
        } = false;

        public int Value
        {
            get
            {
                try { int value = int.Parse(txbValue.Text); return value; } catch (Exception ex) { MessageBox.Show(ex.Message); return 0; }
            }
            set
            {
                txbValue.Text = value.ToString();
                SetBarValue(value);
            }
        }

        #region Bar
        void SetBarValue(int value)
        {
            tkbValue.Value = Math.Min(tkbValue.Maximum, Math.Max(tkbValue.Minimum, value));
        }
        private void tkbValue_Scroll(object sender, EventArgs e)
        {
            var value = tkbValue.Value;
            txbValue.Text = value.ToString();
            OnValueChange?.Invoke(value);
        }
        #endregion

        #region max/min
        bool _rangeVisible = true;
        public bool IsRangeVisible
        {
            get => _rangeVisible; set
            {
                _rangeVisible = value;
                lblMax.Visible = value;
                lblMin.Visible = value;
                if (value)
                {
                    this.Height = 41;
                }
                else
                {
                    this.Height = 26;
                }
            }
        }

        int _max = 100;
        int _min = 0;
        public int Max
        {
            get => _max;
            set
            {
                _max = value;
                tkbValue.Maximum = value;
                lblMax.Text = value.ToString();
            }
        }

        public int Min
        {
            get => _min;
            set
            {
                _min = value;
                tkbValue.Minimum = value;
                lblMin.Text = value.ToString();
            }
        }

        public void SetBarRange(int min, int max)
        {
            tkbValue.Minimum = min;
            tkbValue.Maximum = max;
        }
        #endregion

        private void txbValue_KeyPress(object sender, KeyPressEventArgs e)
        {
            if (e.KeyChar == (char)Keys.Enter)
            {
                var value = Value;
                value = Math.Min(Math.Max(Min, value), value);
                Value = value;
                OnValueChange?.Invoke(value);
            }
            else if (!char.IsDigit(e.KeyChar) && (e.KeyChar != (char)Keys.Back) && (e.KeyChar != (char)Keys.Delete))  // 非数字键, 放弃该输入
            {
                e.Handled = true;
            }
            else if (e.KeyChar == (char)Keys.Delete)
            {
                if (!IsFloat
                    || txbValue.Text.Contains("."))
                    e.Handled = true;
            }
        }
    }
}