FlatRadio.cs
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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Drawing;
using System.Data;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Drawing.Drawing2D;
namespace Asa.Theme
{
public partial class FlatRadio : FlatBase
{
private bool _check;
private RectangleF _switchRect = new RectangleF();
private PointF _switchPoint = new PointF();
private RectangleF _textRect = new RectangleF();
private const int radius = 9; //半径
private const int diameter = radius * 2; //直径
public FlatRadio()
{
InitializeComponent();
}
[Browsable(true), Category(""), Description("显示的文本"), DefaultValue("")]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public override string Text
{
get => base.Text;
set
{
base.Text = value;
CalcSize();
Refresh();
}
}
[Browsable(true), Category(""), Description("显示的文本的字体")]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public override Font Font
{
set
{
base.Font = value;
CalcSize();
Refresh();
}
get
{
return base.Font;
}
}
[Browsable(true), Category(""), Description("单选按钮是否已选中"), DefaultValue(false)]
[DesignerSerializationVisibility(DesignerSerializationVisibility.Visible)]
public bool Checked
{
set
{
_check = value;
CalcSize();
Refresh();
if (_check) SetGroup();
}
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; }
protected override void CalcSize()
{
_switchRect = new RectangleF(6, (Height - diameter) / 2f, diameter, diameter);
SizeF sf = CreateGraphics().MeasureString(Text, Font);
_textRect = new RectangleF(_switchRect.X + _switchRect.Width + 6, (Height - sf.Height) / 2f, sf.Width, sf.Height);
if (Checked)
{
_switchPoint.X = _switchRect.X + radius;
_switchPoint.Y = _switchRect.Y + radius;
}
}
private void SetGroup()
{
if (Parent == null) return;
foreach (System.Windows.Forms.Control ctl in Parent.Controls)
{
if (ctl is FlatRadio)
{
FlatRadio rdo = (FlatRadio)ctl;
if (rdo == this) continue;
if (rdo.Group == Group)
{
if (rdo.Checked)
{
rdo.Checked = false;
break;
}
}
}
}
}
private void FlatRadio_Paint(object sender, PaintEventArgs e)
{
e.Graphics.SmoothingMode = SmoothingMode.HighQuality;
e.Graphics.CompositingQuality = CompositingQuality.HighQuality;
e.Graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
e.Graphics.Clear(Common.BACK_COLOR);
if (Inside)
{
e.Graphics.DrawEllipse(Common.BLUE_PEN, _switchRect);
}
else
{
e.Graphics.DrawEllipse(Common.FORE_PEN, _switchRect);
}
if (Checked)
{
int r = diameter - 8;
e.Graphics.FillEllipse(Common.BLUE_BRUSH, _switchPoint.X - r / 2f, _switchPoint.Y - r / 2f, r, r);
}
string s;
string[] arr = Text.Split(',');
if (arr.Length == 2)
{
if (Checked)
s = arr[1];
else
s = arr[0];
}
else
{
s = Text;
}
e.Graphics.DrawString(s, Font, Common.FORE_BRUSH, _textRect);
}
private void FlatRadio_MouseDown(object sender, MouseEventArgs e)
{
Checked = true;
CalcSize();
Refresh();
}
private void FlatRadio_MouseUp(object sender, MouseEventArgs e)
{
}
}
}