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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.Drawing.Drawing2D;


namespace Studienarbeit_v1
{
    public partial class frmSpeedometer : Form
    {
        public frmSpeedometer()
        {
            InitializeComponent();
        }

        private void frmSpeedometer_Load(object sender, EventArgs e)
        {

        }

        private void numMin_ValueChanged(object sender, EventArgs e)
        {
            trkBar.Minimum = (int)(numMin.Value);
            ticks();
            Refresh();
        }

        private void numMax_ValueChanged(object sender, EventArgs e)
        {
            trkBar.Maximum = (int)(numMax.Value);
            ticks();
            Refresh();
        }

        private void numPos_ValueChanged(object sender, EventArgs e)
        {
            ticks();
            Refresh();
        }

        private void chkboxBalkenanzeige_CheckedChanged(object sender, EventArgs e)
        {
            if (chkboxBalkenanzeige.CheckState == CheckState.Checked)
            {
                prgBalken.Visible = true;
            }
            else
            {
                prgBalken.Visible = false;
            }
        }

        private void chkboxZahlenangabe_CheckedChanged(object sender, EventArgs e)
        {
            if (chkboxZahlenangabe.CheckState == CheckState.Checked)
            {
                txtboxAnzeige.Visible = true;
            }
            else
            {
                txtboxAnzeige.Visible = false;
            }
        }

        private void chkboxPositionswerte_CheckedChanged(object sender, EventArgs e)
        {
            Refresh();
        }

        private void trkBar_Scroll(object sender, EventArgs e)
        {
            txtboxAnzeige.Text = "" + trkBar.Value;
            prgBalken.Minimum = trkBar.Minimum;
            prgBalken.Maximum = trkBar.Maximum;
            prgBalken.Value = trkBar.Value;
            Refresh();
        }

       



        //Tachoanzeige


        private void FrmSpeedometer_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
        {
            tachoDraw(e.Graphics, 0, 0, groupBoxAnzeige.Width - 20, groupBoxAnzeige.Height - 120);
        }

        private void tachoDraw(Graphics gr, int left, int top, int width, int height)
        {
            float dotRad = 0.01f;


            Brush brush = new SolidBrush(this.ForeColor);
            Pen pen = new Pen(brush);
            Font drawFont = new Font("Arial", 12);
           

            pen.Width = 2.5f;
            //große Ellipse
            gr.DrawEllipse(pen, left + 8, top + 15, width, height);


            //Mittelpunkt
            gr.FillEllipse(brush, (float)(left + 8 + width / 2 - 3), (float)(top + 15 + height / 2 - 3), 6, 6);


            gr.TranslateTransform((float)(left + 8 + width / 2), (float)(top + 15 + height / 2));
            gr.ScaleTransform(width, height);

            gr.RotateTransform(150);

            for (int ticks = 0; ticks < numPos.Value; ticks++)
            {

                gr.FillRectangle(brush, 0.5f - 4 * dotRad, -dotRad, 4 * dotRad, 2 * dotRad);
                gr.RotateTransform(240f / ((float)(numPos.Value - 1)));
            }


            gr.RotateTransform(330);

       
            pointerDraw(gr, brush, -10f, 1f);


            gr.ResetTransform();
        }

        private void pointerDraw(Graphics gr, Brush brush, float pos, float relLength)
        {
            GraphicsState grState = gr.Save();


            gr.RotateTransform(((int)(240 * (trkBar.Value / (numMax.Value - numMin.Value)) + 120)));


            gr.FillPolygon(brush, new PointF[]{
                                  new PointF(0,0),            new PointF(0.05f, 0.02f),
                                  new PointF(0.2f,  0.005f),  new PointF(0.5f,  0.005f),
                                  new PointF(0.5f, -0.005f),  new PointF(0.2f, -0.005f),
                                  new PointF(0.05f,-0.02f),   new PointF(0,0)});

            gr.Restore(grState);

        }
        private void ticks()
        {
            trkBar.TickFrequency = (int)(((float)(trkBar.Maximum - trkBar.Minimum) / (float)numPos.Value));
            if (trkBar.TickFrequency >= 20)
                trkBar.TickFrequency = 20;
        }

        private void groupBoxAnzeige_Enter(object sender, EventArgs e)
        {

        }


        private void chkClock_CheckedChanged(object sender, EventArgs e)
        {
            if (chkClock.CheckState == CheckState.Checked)
            {
                txtboxClock.Visible = true;
            }
            else
            {
                txtboxClock.Visible = false;
            }
        }

       

        private void txtboxClock_TextChanged(object sender, EventArgs e)
        {

        }

        private void timer1_Tick_1(object sender, EventArgs e)
        {
            txtboxClock.Text = DateTime.Now.ToString();
            Invalidate();
            Update();
        }

        private void butExit_Click(object sender, EventArgs e)
        {
            Application.Exit();
        }            
    }
}