发个自定义圆形Button(希望对新手有用)

2010-01-13 01:16:39 128 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

Android自定义控件系列(一)—Button七十二变在Android的开发中比较常用的控件就是Button了，这里为大家介绍一种方式很容易实现圆角矩形，以及圆形按钮，同时可实现按下后的效果阅读详情



using System;

using System.Collections.Generic;

using System.Text;

using System.Drawing;

using System.Windows.Forms;

using System.Drawing.Drawing2D;

using System.Data;

namespace IPlayControl

{

  public    class  RoundButton:System.Windows.Forms.Button

    {

      public bool hasoutline = false;

        protected bool down = false;

      GraphicsPath path=new GraphicsPath();

      private Image  graphics;

      private String text;

      private  Font Font = new Font("Arial", 16);

      StringFormat format = StringFormat.GenericDefault;

      FontFamily family = new FontFamily("Arial");



     /* public Font Font

      {

          get { return font; }

          set { font = value; Invalidate(); }

      }*/

      public override String  Text

      {

          get { return text; }

          set { text = value; Invalidate(); }

      }

     

        protected virtual Color GetColor()

        {

            Color[] colors ={ Color.Silver  , Color.Gray };

            return colors[Convert.ToInt32(down)];

        }

        protected virtual Brush GetBrush(bool buttonState)

        {

            return new LinearGradientBrush(new Point(2,2),new Point(Width -1,Height-1),Color.White,GetColor());

        }

        private int GetPenWidth()

        {

            return 1 + Convert.ToInt32(down);

        }

        private Pen GetPen()

        {

            return new Pen(Brushes.Black,GetPenWidth());

        }

         

      public void DrawButton(Graphics graphics)

      {

         graphics.FillEllipse(GetBrush(down),0,0,Width,Height);

          //graphics.DrawEllipse(GetPen(),0,0,Width,Height);

      }

      public void DrawText(GraphicsPath path)

      {

          path.AddString(Text,family ,(int)FontStyle.Regular,Bounds.Height,new Point(0,0),format );

        // graphics.DrawString(text,Font,Brushes.SpringGreen,new PointF(Width,Height));

 

      }

      public void DrawResize(GraphicsPath graphicspath)

      { 

          graphicspath.AddEllipse(0,0,Width,Height);

          

      }

      public void DrawButtonImage(Graphics graphics)

      {

 

      }

      

      protected override void OnPaint(PaintEventArgs e)

      {   

          base.OnPaint(e);

       

          DrawButton(e.Graphics);

          DrawGraphic(e.Graphics);

          DrawText(path);

        

      }

      protected override void OnResize(EventArgs e)

      {

          path.AddEllipse(0,0,Bounds.Width,Bounds.Height);

          Region = new Region(path);

          Invalidate();

          base.OnResize(e);

      }



      private void InitializeComponent()

      {

          this.SuspendLayout();

          this.ResumeLayout(false);



      }

      

      protected override void OnMouseUp(MouseEventArgs mevent)

      {  



          base.OnMouseUp(mevent);

          down = false;

          Invalidate();

      }

     

      protected override void OnMouseDown(MouseEventArgs mevent)

      {

          base.OnMouseDown(mevent);

          down = true;

          Invalidate();

      }



      protected virtual void DrawDownGraphic(Graphics graphics)

      {

          Matrix m = new Matrix();

          m.Scale(1.03f,1.03f);

          graphics.Transform = m;

      }

      protected virtual void DrawGraphic(Graphics graphics)

      {

          if (down)

              DrawDownGraphic(graphics);

      }

      protected virtual Brush GraphicBrush()

      {

          return Enabled ? Brushes.Black : Brushes.Silver;

      }

     



       

    }

}