/// <include file="../../../../docs/Microsoft.Maui.Controls.PlatformConfiguration.iOSSpecific/ListView.xml" path="//Member[@MemberName='SetGroupHeaderStyle'][0]/Docs" />
public static void SetGroupHeaderStyle(BindableObject element, GroupHeaderStyle value)
{
element.SetValue(GroupHeaderStyleProperty, value);
}
public void DrawGroupHeaderBackground(Graphics g, Rectangle rect, Color baseColor, GroupHeaderStyle style)
{
if (rect.Height == 0 || rect.Width == 0) return;
Color lightColor = baseColor.ScaleBrightness(style == GroupHeaderStyle.SmoothSunken ? 0.85f : 1.1f);
Color darkColor = baseColor.ScaleBrightness(style == GroupHeaderStyle.SmoothSunken ? 0.95f : 0.85f);
LinearGradientBrush gradientBrush = new LinearGradientBrush(rect, lightColor, darkColor, 90.0f);
if (style != GroupHeaderStyle.Simple && style != GroupHeaderStyle.Flat)
g.FillRectangle(gradientBrush, rect);
else
g.FillRectangle(new SolidBrush(baseColor), rect);
if (style == GroupHeaderStyle.Flat) return;
g.DrawLine(new Pen(Color.FromArgb(128, Color.White)), rect.Left, rect.Top, rect.Right, rect.Top);
g.DrawLine(new Pen(Color.FromArgb(64, Color.Black)), rect.Left, rect.Bottom - 1, rect.Right, rect.Bottom - 1);
g.DrawLine(new Pen(Color.FromArgb(64, Color.White)), rect.Left, rect.Top, rect.Left, rect.Bottom - 1);
g.DrawLine(new Pen(Color.FromArgb(32, Color.Black)), rect.Right, rect.Top, rect.Right, rect.Bottom - 1);
}
public static IPlatformElementConfiguration <iOS, FormsElement> SetGroupHeaderStyle(this IPlatformElementConfiguration <iOS, FormsElement> config, GroupHeaderStyle value)
{
SetGroupHeaderStyle(config.Element, value);
return(config);
}
