废话不多言,直接代码:
public class RoundButton : Button
{
bool clickBool = false;
//1.设置圆形
//2.设置渐变色
//3.设置tooltip
//4.设置点击之后渐变色,tooltip
ToolTip toolTip = new ToolTip();
public RoundButton()
{
toolTip.AutoPopDelay = 1000;
toolTip.SetToolTip(this, "A: B分列选图。");
}
[Browsable(true), DefaultValue(90), Description("按钮主体颜色渐变方向,X轴顺时针开始")]
[Category("Appearance")]
public int GradientAngle { get; set; }
protected override void OnPaint(PaintEventArgs pevent)
{
base.OnPaintBackground(pevent);
RectangleF rect = new RectangleF(0, 0, this.Width, this.Height);
//两种brush使用 LinearGradientBrush和PathGradientBrush
//Graphics g = pevent.Graphics;
//g.SmoothingMode = SmoothingMode.AntiAlias;//抗锯齿
//Color FColor = Color.Orange;
//Color TColor = Color.White;
//Brush b = new LinearGradientBrush(rect, FColor, TColor, 45, false);
//g.FillEllipse(b, pevent.ClipRectangle);
if (!clickBool)
{
Graphics g = pevent.Graphics;
g.SmoothingMode = SmoothingMode.AntiAlias;//抗锯齿
GraphicsPath graphicsPath = new GraphicsPath();
graphicsPath.AddEllipse(rect);
PathGradientBrush pathGradientBrush = new PathGradientBrush(graphicsPath);
pathGradientBrush.CenterColor = Color.White;
pathGradientBrush.CenterPoint = new PointF(this.Width / 2, this.Height / 2);
pathGradientBrush.SurroundColors = new Color[] { Color.Orange };
g.FillPath(pathGradientBrush, graphicsPath);
}
else
{
Graphics g = pevent.Graphics;
g.SmoothingMode = SmoothingMode.AntiAlias;//抗锯齿
GraphicsPath graphicsPath = new GraphicsPath();
graphicsPath.AddEllipse(rect);
PathGradientBrush pathGradientBrush = new PathGradientBrush(graphicsPath);
pathGradientBrush.CenterColor = Color.White;
pathGradientBrush.CenterPoint = new PointF(this.Width / 2, this.Height / 2);
pathGradientBrush.SurroundColors = new Color[] { Color.Blue };
g.FillPath(pathGradientBrush, graphicsPath);
}
}
protected override void OnMouseClick(MouseEventArgs e)
{
base.OnMouseClick(e);
clickBool = !clickBool;
if (clickBool)
{
toolTip.SetToolTip(this, "4 幅图任选。");
}
else
{
toolTip.SetToolTip(this, "A: B分列选图。");
}
}
}