C # Clock Control

The clock controls written many years ago were released for your reference. First, create a clock control inherited from UserControl and draw it with double buffering. Because it was a few years ago, some code was written into the attribute, and I was too lazy to change it. If you are interested, you can change it to a more standard. // ClockControl. cs using System; using System. drawing; using System. drawing. drawing2D; using System. windows. forms; namespace BrawDraw. com. photoFrame. net. publicFunctions {public class ClockControl: UserControl {DateTime dt; Pen pen = new Pen (Color. black, 1); Pen penSecond = new Pen (Color. black, 6); Brush brush = new SolidBrush (Color. black); Bitmap m_Bitmap = null; Graphics g = null; private Font Clock Font = new Font ("Arial", 48, FontStyle. bold); public ClockControl () {SetStyle (ControlStyles. userPaint | ControlStyles. doubleBuffer | ControlStyles. allPaintingInWmPaint | ControlStyles. resizeRedraw, true); this. updateStyles (); Enabled = false; m_Bitmap = new Bitmap (100,100);} public DateTime Time {get {return dt;} set {m_Bitmap = new Bitmap (this. clientRectangle. width, this. clientRectangle. he Ight); g = Graphics. fromImage (m_Bitmap); g. clear (Color. white); InitializeCoordinates (g); DrawDots (g, brush); DrawHourHand (g, pen); DrawMinuteHand (g, pen); DrawNumbers (g); // DrawSecondHand (g, pen); // if (g! = Null) g. Dispose (); if (dt. Hour! = Value. Hour) {DrawHourHand (g, pen);} if (dt. Minute! = Value. Minute) {DrawHourHand (g, pen); DrawMinuteHand (g, pen);} if (dt. Second! = Value. Second) {DrawMinuteHand (g, pen); DrawSecondHand (g, pen);} if (dt. Millisecond! = Value. millisecond) {DrawSecondHand (g, pen);} dt = value; Graphics grfx = CreateGraphics (); grfx. drawImage (m_Bitmap, 0, 0); this. validate (); if (grfx! = Null) grfx. dispose () ;}} protected override void OnPaint (PaintEventArgs pea) {g = pea. graphics; g. smoothingMode = System. drawing. drawing2D. smoothingMode. highQuality; g. textRenderingHint = System. drawing. text. textRenderingHint. antiAliasGridFit; DrawClock (g); base. onPaint (pea);} private void DrawClock (Graphics gg) {m_Bitmap = new Bitmap (this. width, this. height); Graphics grfx = Graphics. fromIm Age (m_Bitmap); grfx. clear (Color. white); InitializeCoordinates (grfx); DrawDots (grfx, brush); DrawHourHand (grfx, pen); DrawMinuteHand (grfx, pen); DrawSecondHand (grfx, pen ); drawNumbers (grfx); gg. drawImage (m_Bitmap, 0, 0); grfx. dispose ();} void InitializeCoordinates (Graphics grfx) {if (Width = 0 | Height = 0) return; grfx. translateTransform (Width/2, Height/2); float fInches = Math. min (Width /Grfx. dpiX, Height/grfx. dpiY); grfx. scaleTransform (fInches * grfx. dpiX/2000, fInches * grfx. dpiY/2000);} void DrawDots (Graphics grfx, Brush brush) {for (int I = 0; I <60; I ++) {int iSize = I % 5 = 0? 100: 30; grfx. fillEllipse (brush, 0-iSize/2,-860-iSize/2, iSize, iSize); grfx. rotateTransform (6) ;}} protected virtual void DrawHourHand (Graphics grfx, Pen pen) {GraphicsState gs = grfx. save (); grfx. rotateTransform (360f * Time. hour/12 + 30f * Time. minute/60 + 2); grfx. drawPolygon (pen, new Point [] {new Point (0,150), new Point (100, 0), new Point (0,-600), new Point (-100, 0)}); gr Fx. restore (gs);} protected virtual void DrawMinuteHand (Graphics grfx, Pen pen) {GraphicsState gs = grfx. save (); grfx. rotateTransform (360f * Time. minute/60 + 6f * Time. second/60 + 2); grfx. drawPolygon (pen, new Point [] {new Point (0,200), new Point (50, 0), new Point (0,-800), new Point (-50, 0)}); grfx. restore (gs);} protected virtual void DrawSecondHand (Graphics grfx, Pen pen) {GraphicsSta Te gs = grfx. save (); grfx. rotateTransform (360f * Time. second/60 + 6f * Time. millisecond/1000 + 2.8f); grfx. drawLine (penSecond, 0, 0, 0,-800); grfx. restore (gs);} private void InitializeComponent () {// ClockControl // this. name = "ClockControl"; this. size = new System. drawing. size (416,424);} protected void DrawNumbers (Graphics grfx) {int count = 1; int r = 1900; int dx = 25; int dy = 20; Int offset = 8; int dr = 300; GraphicsState gs = grfx. save (); grfx. translateTransform (-r/2-dx,-r/2-dy); grfx. drawEllipse (new Pen (Color. black, 10), dx/2 + offset, dy/2 + offset, r + dx-offset, r + dy-offset); // grfx. drawEllipse (new Pen (Color. black, 2), dx + offset, dy + offset, r-offset, r-offset); grfx. translateTransform (dr/3 + 15, dr/3 + 15); for (double a = 0; a <2 * Math. P I; a + = (2.0 * Math. PI/12) {double x = (r-dr * 1.2)/2 * Math. cos (a-Math. PI/3) + (r-dr)/2 + 25; double y = (r-dr * 1.2)/2 * Math. sin (a-Math. PI/3) + (r-dr)/2 + 20; grfx. drawString (Convert. toString (count), ClockFont, Brushes. black, (float) x, (float) y, new StringFormat (); count ++;} grfx. restore (gs); // grfx. drawLine (new Pen (Color. black, 1), 0,-800, 0,800) ;}} then from BezierClockControl and then from C The lockControl control is inherited. Because of the different painting methods, the final display effect is also different: // BezierClockControl. cs using System; using System. drawing; using System. drawing. drawing2D; using System. windows. forms; namespace BrawDraw. com. photoFrame. net. publicFunctions {public class BezierClockControl: ClockControl {protected override void DrawHourHand (Graphics grfx, Pen pen) {GraphicsState gs = grfx. save (); grfx. rotateTransform (360f * Time. hour/12 + 3 0f * Time. minute/60); GraphicsPath gp = new GraphicsPath (); Point [] points = new Point [] {new Point (0,-600), new Point (0, -300), new Point (200,-300), new Point (50,-200), new Point (50,-200), new Point (50, 0 ), new Point (50, 0), new Point (50, 75), new Point (-50, 75), new Point (-50, 0), new Point (-50, 0), new Point (-50,-200), new Point (-50,-200), new Point (-200,-300), new Point (0, -300), new Point (0,-600)}; gp. addBeziers (points); // grfx. drawBeziers (pen, points); grfx. fillPath (new SolidBrush (Color. red), gp); grfx. restore (gs); gp. dispose ();} private void InitializeComponent () {// BezierClockControl/this. name = "BezierClockControl"; this. size = new System. drawing. size (448,376);} protected override void DrawMinuteHand (Graphics grfx, Pen pen) {GraphicsState gs = gr Fx. save (); grfx. rotateTransform (360f * Time. minute/60 + 6f * Time. second/60); GraphicsPath gp = new GraphicsPath (); Point [] points = new Point [] {new Point (0,-800), new Point (0, -750), new Point (0,-700), new Point (25,-600), new Point (25,-600), new Point (25, 0 ), new Point (25, 0), new Point (25, 50), new Point (-25, 50), new Point (-25, 0), new Point (-25, 0), new Point (-25,-600), ne W Point (-25,-600), new Point (0,-700), new Point (0,-750), new Point (0,-800)}; gp. addBeziers (points); grfx. fillPath (new SolidBrush (Color. green), gp); // grfx. drawBeziers (pen, points); grfx. restore (gs); gp. dispose () ;}} Finally, let's test: using System; using System. drawing; using System. collections; using System. componentModel; using System. windows. forms; using System. data; namespace BrawDraw. com. photoF Rame. Net. PublicFunctions {/// <summary> /// abstract description of BezierClock. /// </Summary> public class BezierClock: System. Windows. Forms. Form {/// <summary> /// a required designer variable. /// </Summary> private System. componentModel. container components = null; // ClockControl clkctl; BezierClockControl clkctl; public BezierClock () {InitializeComponent (); this. setStyle (ControlStyles. doubleBuffer, true); this. setStyle (ControlStyles. allPaintingInWmPaint, true); // Redraw when resized this. setStyle (ControlStyles. resizeRedraw, true); Text = "bezerclock"; // clkctl = new ClockControl (); Clkctl = new BezierClockControl (); clkctl. parent = this; clkctl. time = DateTime. now; clkctl. dock = DockStyle. fill; clkctl. backColor = Color. black; clkctl. foreColor = Color. white; Timer timer = new Timer (); timer. interval = 1000; timer. tick + = new EventHandler (OnTimerTick); timer. start ();} void OnTimerTick (object obj, EventArgs ea) {clkctl. time = DateTime. now ;}//< summary> /// clear all resources in use. /// </Summary> protected override void Dispose (bool disposing) {if (components! = Null) {components. dispose () ;}} base. dispose (disposing );} # region Windows Form Designer generated code /// <summary> /// the designer supports the required methods-do not use the code editor to modify the content of this method. /// </Summary> private void InitializeComponent () {// BezierClock // this. autoScaleBaseSize = new System. drawing. size (6, 14); this. clientSize = new System. drawing. size (432,421); this. name = "BezierClock"; this. text = "BezierClock" ;}# endregion /// <summary> /// main entry point of the application. /// </Summary> [STAThread] static void Main () {Application. Run (new BezierClock ());}}}