/// <summary>
/// 在指定的容器下面弹出包含指定控件的层
/// </summary>
/// <param name="parent">容器</param>
/// <param name="content">显示的内容</param>
/// <param name="size">大小，为空则以显示控件大小为准</param>
/// <returns></returns>
public static ToolStripDropDown Show(Control parent, Control content, Size size, bool autoClose = false)
{
ToolStripControlHost host;
ToolStripDropDown dropDown;
MPanel container;
container = new MPanel();
content.Location = new System.Drawing.Point(1, 1);
container.BorderStyle = ButtonBorderStyle.Solid;
container.BorderWidth = 1;
container.BorderColor = System.Drawing.Color.LightGray;
content.SizeChanged += Content_SizeChanged;
host = new ToolStripControlHost(container);
container.Controls.Add(content);
dropDown = new ToolStripDropDown();
dropDown.Items.Add(host);
dropDown.AutoClose = autoClose;
host.Margin = Padding.Empty;
host.Padding = Padding.Empty;
host.AutoSize = true;
dropDown.Padding = Padding.Empty;
//添加
dropDown.Items.Add(host);
if (size.IsEmpty)
{
size = new System.Drawing.Size(content.Width + 2, content.Height + 2);
}
dropDown.Size = size;
container.Size = size;
content.Size = size;
dropDown.Show(parent, 0, parent.Height);
return(dropDown);
}
/// <summary>
/// Works the complete.
/// </summary>
/// <param name="results">The results.</param>
/// User:Ryan CreateTime:2012-8-5 16:23.
private void WorkComplete(IAsyncResult results)
{
if (this.IsDisposed || !this.waitingLayer.Visible || !this.IsHandleCreated)
{
return;
}
if (this.waitingLayer.InvokeRequired)
{
try
{
this.Invoke(new Action <IAsyncResult>(this.WorkComplete), results);
}
catch { }
}
else
{
try
{
((MethodInvoker)results.AsyncState).EndInvoke(results);
}
finally
{
this.Invoke(new MethodInvoker(() =>
{
this.isWaiting = false;
rolling.Stop();
this.Controls.Remove(waitingLayer);
rolling = null;
waitingInnerLayer = null;
waitingLayer.Visible = false;
waitingLayer = null;
}));
//waitingBox.Visible = false;
}
}
}
/// <summary>
/// 加载中，后台处理方法
/// </summary>
/// <param name="method"></param>
/// <param name="message"></param>
/// <returns></returns>
public bool Waiting(MethodInvoker method, ERollingBarStyle rollingStyle = ERollingBarStyle.Default, string message = "加载中，请稍后")
{
if (isWaiting)
{
return(false);
}
this.isWaiting = true;
var captionHeight = this.Caption.Height;
Size fontSize = Size.Empty;
using (Graphics g = this.CreateGraphics())
{
fontSize = Size.Ceiling(g.MeasureString(message, this.WaitingFont));
}
Rectangle rect = new Rectangle(this.Padding.Left,
this.Caption.Height,
this.Width - this.Padding.Left - this.Padding.Right,
this.Height - this.Caption.Height - this.Padding.Bottom);
waitingLayer = new Panel();
waitingLayer.Size = rect.Size;
waitingLayer.Location = rect.Location;
waitingLayer.Anchor = AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right | AnchorStyles.Top;
this.waitingLayer.BackgroundImageLayout = ImageLayout.Stretch;
this.Controls.Add(waitingLayer);
rolling = new MRolling();
rolling.Size = new System.Drawing.Size(60, 60);
rolling.Location = new Point(15, 10);
rolling.SliceColor = Color.FromArgb(231, 76, 60);
rolling.RadiusOut = 38;
rolling.SliceNumber = 12;
rolling.RollingStyle = rollingStyle;
rolling.RadiusIn = rollingStyle == ERollingBarStyle.Default ? 20 : 38;
rolling.PenWidth = rollingStyle == ERollingBarStyle.Default ? 3 : 5;
waitingInnerLayer = new MPanel();
waitingInnerLayer.Radius = 10;
waitingInnerLayer.BorderColor = Color.DarkGray;
waitingInnerLayer.BorderWidth = 1;
waitingInnerLayer.RadiusMode = RadiusMode.All;
waitingInnerLayer.BackColor = Color.White;
waitingInnerLayer.Size = new Size(rolling.Width + fontSize.Width + 42, rolling.Height + 22);
waitingInnerLayer.Location = new Point((waitingLayer.Width - waitingInnerLayer.Width) / 2, (waitingLayer.Height - waitingInnerLayer.Height) / 2 - captionHeight);
this.waitingInnerLayer.Controls.Add(rolling);
var msgLabel = new Label();
msgLabel.Font = this.WaitingFont;
msgLabel.Text = message;
msgLabel.BackColor = Color.Transparent;
msgLabel.AutoSize = true;
msgLabel.Location = new Point(15 + rolling.Width + 10, (waitingInnerLayer.Height - fontSize.Height) / 2);
this.waitingInnerLayer.Controls.Add(msgLabel);
this.waitingLayer.Controls.Add(this.waitingInnerLayer);
this.waitingLayer.BackgroundImage = CreateBacgroundImage();
this.Controls.Add(waitingLayer);
this.waitingLayer.BringToFront();
this.rolling.Start();
IAsyncResult ar = method.BeginInvoke(this.WorkComplete, method);
return(true);
}