FaceRadio.cs
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using System;
using System.ComponentModel;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Windows.Forms;
namespace FaceControl
{
[DefaultProperty("Text")]
[DefaultEvent("CheckedChanged")]
public partial class FaceRadio : ControlBase
{
private bool mouseDown = false;
private RectangleF ringOutRect = new RectangleF();
private RectangleF ringInRect = new RectangleF();
private RectangleF ringPoint = new RectangleF();
private RectangleF textRect = new RectangleF();
private GraphicsPath borderPath = new GraphicsPath();
private bool _check = false;
private int _ringWidth = 18;
private const int SPACE = 6; //图片与文字的间隔
public FaceRadio()
{
InitializeComponent();
}
#region 事件
[Browsable(true), Category("杂项"), Description("当checked属性更改值时发生")]
public event EventHandler CheckedChanged;
#endregion
#region 属性
[Browsable(true), Category("外观"), Description("控件上环形开关的宽度"), DefaultValue(18)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public int RingWidth
{
get => _ringWidth;
set
{
_ringWidth = value;
CalcSize();
Refresh();
}
}
[Browsable(true), Category(""), Description("单选按钮是否已选中"), DefaultValue(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public bool Checked
{
set
{
if (_check != value)
{
_check = value;
CalcSize();
Refresh();
}
if (_check)
SetGroup();
CheckedChanged?.Invoke(this, new EventArgs());
}
get
{
return _check;
}
}
[Browsable(true), Category(""), Description("相同的内容为一组，同一组的单选按钮只能选中一个。"), DefaultValue("")]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public string Group { set; get; }
#endregion
protected override void CalcSize()
{
base.CalcSize();
CalcTextLocation();
CalcShape();
}
protected override void DrawEnabled(Graphics g)
{
base.DrawEnabled(g);
//控件边框
if (CursorInside)
{
if (_check)
{
if (mouseDown)
g.FillEllipse(new SolidBrush(theme.DOWN_COLOR), ringOutRect);
else
g.FillEllipse(new SolidBrush(ForeColor), ringOutRect);
}
else
{
if (mouseDown)
g.FillEllipse(new SolidBrush(ForeColor), ringOutRect);
else
g.FillEllipse(new SolidBrush(theme.DOWN_COLOR), ringOutRect);
}
g.FillEllipse(new SolidBrush(theme.BACK_COLOR), ringInRect);
if (BorderWidth > 0)
g.DrawPath(borderInsidePen, borderPath);
}
else
{
g.FillPath(new SolidBrush(BackColor), borderPath);
if (_check)
{
g.FillEllipse(new SolidBrush(theme.DOWN_COLOR), ringOutRect);
}
else
{
g.FillEllipse(new SolidBrush(ForeColor), ringOutRect);
}
g.FillEllipse(new SolidBrush(theme.BACK_COLOR), ringInRect);
if (BorderWidth > 0)
g.DrawPath(borderOutsidePen, borderPath);
}
//开关圆点
if (_check)
g.FillEllipse(new SolidBrush(ForeColor), ringPoint);
//文字
g.DrawString(Text, Font, new SolidBrush(ForeColor), textRect);
}
protected override void DrawDisabled(Graphics g)
{
base.DrawDisabled(g);
//控件边框
g.FillEllipse(new SolidBrush(theme.OVER_COLOR), ringOutRect);
g.FillEllipse(new SolidBrush(theme.BACK_COLOR), ringInRect);
if (BorderWidth > 0)
g.DrawPath(borderOutsidePen, borderPath);
//开关圆点
if (_check)
g.FillEllipse(new SolidBrush(theme.OVER_COLOR), ringPoint);
//文字
g.DrawString(Text, Font, new SolidBrush(theme.LOST_FOCUS_COLOR), textRect);
}
private void SetGroup()
{
if (Parent == null) return;
foreach (Control ctl in Parent.Controls)
{
if (ctl is FaceRadio)
{
FaceRadio rdo = (FaceRadio)ctl;
if (rdo == this) continue;
if (rdo.Group == Group)
{
if (rdo.Checked)
{
rdo.Checked = false;
break;
}
}
}
}
}
private void CalcShape()
{
borderPath = new GraphicsPath();
float n;
switch (FaceShape)
{
case Model.ButtonShape.Rectangle:
borderPath.AddRectangle(borderRect);
break;
case Model.ButtonShape.RoundRectangle:
n = borderRect.Height / 8f;
borderPath.AddLine(borderRect.X + n, borderRect.Y, borderRect.Right - n, borderRect.Y);
borderPath.AddArc(borderRect.Right - n - n, borderRect.Y, n + n, n + n, 270, 90);
borderPath.AddLine(borderRect.Right, borderRect.Y + n, borderRect.Right, borderRect.Bottom - n);
borderPath.AddArc(borderRect.Right - n - n, borderRect.Bottom - n - n, n + n, n + n, 0, 90);
borderPath.AddLine(borderRect.Right - n, borderRect.Bottom, borderRect.X + n, borderRect.Bottom);
borderPath.AddArc(borderRect.X, borderRect.Bottom - n - n, n + n, n + n, 90, 90);
borderPath.AddLine(borderRect.X, borderRect.Bottom - n, borderRect.X, borderRect.Y + n);
borderPath.AddArc(borderRect.X, borderRect.Y, n + n, n + n, 180, 90);
break;
case Model.ButtonShape.Ellipse:
borderPath.AddEllipse(borderRect);
break;
case Model.ButtonShape.EllipseRectangle:
n = borderRect.Height / 2f;
borderPath.AddLine(borderRect.X + n, borderRect.Y, borderRect.Right - n, borderRect.Y);
borderPath.AddArc(borderRect.Right - n - n, borderRect.Y, n + n, n + n, 270, 180);
borderPath.AddLine(borderRect.Right - n, borderRect.Bottom, borderRect.X + n, borderRect.Bottom);
borderPath.AddArc(borderRect.X, borderRect.Y, n + n, n + n, 90, 180);
break;
case Model.ButtonShape.Circle:
if (borderRect.Width > borderRect.Height)
borderPath.AddEllipse((borderRect.Width - borderRect.Height) / 2f, borderRect.Y, borderRect.Height, borderRect.Height);
else
borderPath.AddEllipse(borderRect.X, (borderRect.Height - borderRect.Width) / 2f, borderRect.Width, borderRect.Width);
break;
}
}
private void CalcTextLocation()
{
if (string.IsNullOrEmpty(Text)) return;
Graphics g = CreateGraphics();
SizeF sf = g.MeasureString(Text, Font);
ringOutRect = new RectangleF(0, (Height - _ringWidth) / 2f, _ringWidth, _ringWidth);
textRect = new RectangleF(0, (Height - sf.Height) / 2f, sf.Width, sf.Height);
float x;
switch (TextAlign)
{
case HorizontalAlignment.Left:
x = BorderWidth;
ringOutRect.X = x;
x += _ringWidth + SPACE;
textRect.X = x;
break;
case HorizontalAlignment.Center:
x = (Width - sf.Width - _ringWidth - SPACE) / 2f;
ringOutRect.X = x;
x += _ringWidth + SPACE;
textRect.X = x;
break;
case HorizontalAlignment.Right:
x = Width - BorderWidth - sf.Width;
textRect.X = x;
x -= (SPACE + _ringWidth);
ringOutRect.X = x;
break;
}
float w = _ringWidth / 6f;
ringInRect = new RectangleF(ringOutRect.X + w, ringOutRect.Y + w, w * 4, w * 4);
ringPoint = new RectangleF(ringOutRect.X + w * 2, ringOutRect.Y + w * 2, w * 2, w * 2);
}
private void FaceRadio_MouseDown(object sender, MouseEventArgs e)
{
if (!Enabled) return;
if (e.Button == MouseButtons.Left)
{
mouseDown = true;
_check = !_check;
Refresh();
if (_check)
SetGroup();
}
}
private void FaceRadio_MouseUp(object sender, MouseEventArgs e)
{
if (!Enabled) return;
if (e.Button == MouseButtons.Left)
{
mouseDown = false;
Refresh();
CheckedChanged?.Invoke(this, new EventArgs());
}
}
private void FaceRadio_MouseMove(object sender, MouseEventArgs e)
{
//buttonOver = borderPath.IsVisible(e.Location);
//Refresh();
}
}
}