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using System;using System.Collections.Generic;using System.Drawing;using System.Drawing.Drawing2D;using System.Linq;using System.Text;using System.Threading.Tasks;using System.Windows.Forms;namespace NITNavComm {public class SevenSegment : UserControl {public SevenSegment() {this.SuspendLayout();this.Name = "SevenSegment";this.Size = new System.Drawing.Size(32, 64);this.Paint += new System.Windows.Forms.PaintEventHandler(this.SevenSegment_Paint);this.Resize += new System.EventHandler(this.SevenSegment_Resize);this.ResumeLayout(false);this.TabStop = false;this.Padding = new Padding(4, 4, 4, 4);this.DoubleBuffered = true;segPoints = new Point[7][];for (int i = 0; i < 7; i++) segPoints[i] = new Point[6];RecalculatePoints();}/// <summary>/// Recalculate the points that represent the polygons of the/// seven segments, whether we're just initializing or/// changing the segment width./// </summary>private void RecalculatePoints() {int halfHeight = gridHeight / 2, halfWidth = elementWidth / 2;int p = 0;segPoints[p][0].X = elementWidth + 1; segPoints[p][0].Y = 0;segPoints[p][1].X = gridWidth - elementWidth - 1; segPoints[p][1].Y = 0;segPoints[p][2].X = gridWidth - halfWidth - 1; segPoints[p][2].Y = halfWidth;segPoints[p][3].X = gridWidth - elementWidth - 1; segPoints[p][3].Y = elementWidth;segPoints[p][4].X = elementWidth + 1; segPoints[p][4].Y = elementWidth;segPoints[p][5].X = halfWidth + 1; segPoints[p][5].Y = halfWidth;p++;segPoints[p][0].X = 0; segPoints[p][0].Y = elementWidth + 1;segPoints[p][1].X = halfWidth; segPoints[p][1].Y = halfWidth + 1;segPoints[p][2].X = elementWidth; segPoints[p][2].Y = elementWidth + 1;segPoints[p][3].X = elementWidth; segPoints[p][3].Y = halfHeight - halfWidth - 1;segPoints[p][4].X = 4; segPoints[p][4].Y = halfHeight - 1;segPoints[p][5].X = 0; segPoints[p][5].Y = halfHeight - 1;p++;segPoints[p][0].X = gridWidth - elementWidth; segPoints[p][0].Y = elementWidth + 1;segPoints[p][1].X = gridWidth - halfWidth; segPoints[p][1].Y = halfWidth + 1;segPoints[p][2].X = gridWidth; segPoints[p][2].Y = elementWidth + 1;segPoints[p][3].X = gridWidth; segPoints[p][3].Y = halfHeight - 1;segPoints[p][4].X = gridWidth - 4; segPoints[p][4].Y = halfHeight - 1;segPoints[p][5].X = gridWidth - elementWidth; segPoints[p][5].Y = halfHeight - halfWidth - 1;p++;segPoints[p][0].X = elementWidth + 1; segPoints[p][0].Y = halfHeight - halfWidth;segPoints[p][1].X = gridWidth - elementWidth - 1; segPoints[p][1].Y = halfHeight - halfWidth;segPoints[p][2].X = gridWidth - 5; segPoints[p][2].Y = halfHeight;segPoints[p][3].X = gridWidth - elementWidth - 1; segPoints[p][3].Y = halfHeight + halfWidth;segPoints[p][4].X = elementWidth + 1; segPoints[p][4].Y = halfHeight + halfWidth;segPoints[p][5].X = 5; segPoints[p][5].Y = halfHeight;p++;segPoints[p][0].X = 0; segPoints[p][0].Y = halfHeight + 1;segPoints[p][1].X = 4; segPoints[p][1].Y = halfHeight + 1;segPoints[p][2].X = elementWidth; segPoints[p][2].Y = halfHeight + halfWidth + 1;segPoints[p][3].X = elementWidth; segPoints[p][3].Y = gridHeight - elementWidth - 1;segPoints[p][4].X = halfWidth; segPoints[p][4].Y = gridHeight - halfWidth - 1;segPoints[p][5].X = 0; segPoints[p][5].Y = gridHeight - elementWidth - 1;p++;segPoints[p][0].X = gridWidth - elementWidth; segPoints[p][0].Y = halfHeight + halfWidth + 1;segPoints[p][1].X = gridWidth - 4; segPoints[p][1].Y = halfHeight + 1;segPoints[p][2].X = gridWidth; segPoints[p][2].Y = halfHeight + 1;segPoints[p][3].X = gridWidth; segPoints[p][3].Y = gridHeight - elementWidth - 1;segPoints[p][4].X = gridWidth - halfWidth; segPoints[p][4].Y = gridHeight - halfWidth - 1;segPoints[p][5].X = gridWidth - elementWidth; segPoints[p][5].Y = gridHeight - elementWidth - 1;p++;segPoints[p][0].X = elementWidth + 1; segPoints[p][0].Y = gridHeight - elementWidth;segPoints[p][1].X = gridWidth - elementWidth - 1; segPoints[p][1].Y = gridHeight - elementWidth;segPoints[p][2].X = gridWidth - halfWidth - 1; segPoints[p][2].Y = gridHeight - halfWidth;segPoints[p][3].X = gridWidth - elementWidth - 1; segPoints[p][3].Y = gridHeight;segPoints[p][4].X = elementWidth + 1; segPoints[p][4].Y = gridHeight;segPoints[p][5].X = halfWidth + 1; segPoints[p][5].Y = gridHeight - halfWidth;}private Point[][] segPoints;private int gridHeight = 80;private int gridWidth = 48;private int elementWidth = 10;private float italicFactor = 0.0F;private Color colorBackground = Color.DarkGray;private Color colorDark = Color.DimGray;private Color colorLight = Color.Red;/// <summary>/// Background color of the 7-segment display./// </summary>public Color ColorBackground { get { return colorBackground; } set { colorBackground = value; Invalidate(); } }/// <summary>/// Color of inactive LED segments./// </summary>public Color ColorDark { get { return colorDark; } set { colorDark = value; Invalidate(); } }/// <summary>/// Color of active LED segments./// </summary>public Color ColorLight { get { return colorLight; } set { colorLight = value; Invalidate(); } }/// <summary>/// Width of LED segments./// </summary>public int ElementWidth { get { return elementWidth; } set { elementWidth = value; RecalculatePoints(); Invalidate(); } }/// <summary>/// Shear coefficient for italicizing the displays. Try a value like -0.1./// </summary>public float ItalicFactor { get { return italicFactor; } set { italicFactor = value; Invalidate(); } }private void SevenSegment_Resize(object sender, EventArgs e) { this.Invalidate(); }protected override void OnPaddingChanged(EventArgs e) { base.OnPaddingChanged(e); this.Invalidate(); }protected override void OnPaintBackground(PaintEventArgs e) {//base.OnPaintBackground(e);e.Graphics.Clear(colorBackground);}/// <summary>/// These are the various bit patterns that represent the characters/// that can be displayed in the seven segments. Bits 0 through 6/// correspond to each of the LEDs, from top to bottom!/// </summary>public enum ValuePattern {None = 0x0, Zero = 0x77, One = 0x24, Two = 0x5D, Three = 0x6D,Four = 0x2E, Five = 0x6B, Six = 0x7B, Seven = 0x25,Eight = 0x7F, Nine = 0x6F, A = 0x3F, B = 0x7A, C = 0x53,D = 0x7C, E = 0x5B, F = 0x1B, G = 0x73, H = 0x3E,J = 0x74, L = 0x52, N = 0x38, O = 0x78, P = 0x1F, Q = 0x2F, R = 0x18,T = 0x5A, U = 0x76, Y = 0x6E,Dash = 0x8, Equals = 0x48}private string theValue = null;/// <summary>/// Character to be displayed on the seven segments. Supported characters/// are digits and most letters./// </summary>public string Value {get { return theValue; }set {customPattern = 0;if (value != null) {//is it an integer?bool success = false;try {int tempValue = Convert.ToInt32(value);if (tempValue > 9) tempValue = 9; if (tempValue < 0) tempValue = 0;switch (tempValue) {case 0: customPattern = (int)ValuePattern.Zero; break;case 1: customPattern = (int)ValuePattern.One; break;case 2: customPattern = (int)ValuePattern.Two; break;case 3: customPattern = (int)ValuePattern.Three; break;case 4: customPattern = (int)ValuePattern.Four; break;case 5: customPattern = (int)ValuePattern.Five; break;case 6: customPattern = (int)ValuePattern.Six; break;case 7: customPattern = (int)ValuePattern.Seven; break;case 8: customPattern = (int)ValuePattern.Eight; break;case 9: customPattern = (int)ValuePattern.Nine; break;}success = true;} catch { }if (!success) {try {//is it a letter?string tempString = Convert.ToString(value);switch (tempString.ToLower()[0]) {case 'a': customPattern = (int)ValuePattern.A; break;case 'b': customPattern = (int)ValuePattern.B; break;case 'c': customPattern = (int)ValuePattern.C; break;case 'd': customPattern = (int)ValuePattern.D; break;case 'e': customPattern = (int)ValuePattern.E; break;case 'f': customPattern = (int)ValuePattern.F; break;case 'g': customPattern = (int)ValuePattern.G; break;case 'h': customPattern = (int)ValuePattern.H; break;case 'j': customPattern = (int)ValuePattern.J; break;case 'l': customPattern = (int)ValuePattern.L; break;case 'n': customPattern = (int)ValuePattern.N; break;case 'o': customPattern = (int)ValuePattern.O; break;case 'p': customPattern = (int)ValuePattern.P; break;case 'q': customPattern = (int)ValuePattern.Q; break;case 'r': customPattern = (int)ValuePattern.R; break;case 't': customPattern = (int)ValuePattern.T; break;case 'u': customPattern = (int)ValuePattern.U; break;case 'y': customPattern = (int)ValuePattern.Y; break;case '-': customPattern = (int)ValuePattern.Dash; break;case '=': customPattern = (int)ValuePattern.Equals; break;}} catch { }}}theValue = value; Invalidate();}}private int customPattern = 0;/// <summary>/// Set a custom bit pattern to be displayed on the seven segments. This is an/// integer value where bits 0 through 6 correspond to each respective LED/// segment./// </summary>public int CustomPattern { get { return customPattern; } set { customPattern = value; Invalidate(); } }private bool showDot = true, dotOn = false;/// <summary>/// Specifies if the decimal point LED is displayed./// </summary>public bool DecimalShow { get { return showDot; } set { showDot = value; Invalidate(); } }/// <summary>/// Specifies if the decimal point LED is active./// </summary>public bool DecimalOn { get { return dotOn; } set { dotOn = value; Invalidate(); } }private void SevenSegment_Paint(object sender, PaintEventArgs e) {int useValue = customPattern;Brush brushLight = new SolidBrush(colorLight);Brush brushDark = new SolidBrush(colorDark);// Define transformation for our container...RectangleF srcRect = new RectangleF(0.0F, 0.0F, gridWidth, gridHeight);RectangleF destRect = new RectangleF(Padding.Left, Padding.Top, this.Width - Padding.Left - Padding.Right, this.Height - Padding.Top - Padding.Bottom);// Begin graphics container that remaps coordinates for our convenienceGraphicsContainer containerState = e.Graphics.BeginContainer(destRect, srcRect, GraphicsUnit.Pixel);Matrix trans = new Matrix();trans.Shear(italicFactor, 0.0F);e.Graphics.Transform = trans;e.Graphics.SmoothingMode = SmoothingMode.AntiAlias;e.Graphics.PixelOffsetMode = PixelOffsetMode.Default;// Draw elements based on whether the corresponding bit is highe.Graphics.FillPolygon((useValue & 0x1) == 0x1 ? brushLight : brushDark, segPoints[0]);e.Graphics.FillPolygon((useValue & 0x2) == 0x2 ? brushLight : brushDark, segPoints[1]);e.Graphics.FillPolygon((useValue & 0x4) == 0x4 ? brushLight : brushDark, segPoints[2]);e.Graphics.FillPolygon((useValue & 0x8) == 0x8 ? brushLight : brushDark, segPoints[3]);e.Graphics.FillPolygon((useValue & 0x10) == 0x10 ? brushLight : brushDark, segPoints[4]);e.Graphics.FillPolygon((useValue & 0x20) == 0x20 ? brushLight : brushDark, segPoints[5]);e.Graphics.FillPolygon((useValue & 0x40) == 0x40 ? brushLight : brushDark, segPoints[6]);if (showDot)e.Graphics.FillEllipse(dotOn ? brushLight : brushDark, gridWidth - 1, gridHeight - elementWidth + 1, elementWidth, elementWidth);e.Graphics.EndContainer(containerState);}}}