protected virtual ToastMessageControl GetToastControl(Form form, object content)
{
string msg = content == null ? "(null)" : content.ToString();
var control = new ToastMessageControl(msg, Background, Foreground, Glow)
{
IsTransparent = true
};
Font font = Font;
if (font == null)
{
font = form.Font;
}
else
{
control.Font = font;
}
using (Graphics gr = control.CreateGraphics())
{
SizeF textSize = gr.MeasureString(msg, font);
control.Height = (int)textSize.Height + 25;
control.Width = (int)textSize.Width + 35;
if (textSize.Width > form.Width - 100)
{
control.Width = form.Width - 100;
var hf = textSize.Width / control.Width;
control.Height += (int)(textSize.Height * hf);
}
if (control.Height > form.Height)
{
control.Height = form.Height;
}
}
return(control);
}
private static void ClearControl(ToastMessageControl control)
{
control.TaskCompletionSource.TrySetResult(null);
control.Parent?.Controls.Remove(control);
((Timer)control.Tag).Dispose();
control.Dispose();
}
public void Close()
{
var control = Control;
if (control == null)
{
return;
}
Control = null;
ServiceProvider.ThreadManager.Invoke(ExecutionMode.AsynchronousOnUiThread, control, control, (messageControl, toastMessageControl) => ClearControl(messageControl));
}
protected virtual ToastMessageControl ShowInternal(object content, float duration, ToastPosition position, IDataContext context, TaskCompletionSource <object> tcs)
{
Form activeForm = Form.ActiveForm;
if (activeForm == null)
{
tcs.SetResult(null);
return(null);
}
foreach (var result in activeForm.Controls.Find(ControlName, false).OfType <ToastMessageControl>())
{
ClearControl(result);
}
ToastMessageControl control = null;
var selector = activeForm.GetBindingMemberValue(AttachedMembers.Form.ToastTemplateSelector);
if (selector != null)
{
control = (ToastMessageControl)selector.SelectTemplate(content, activeForm);
}
if (control == null)
{
control = GetToastControl(activeForm, content);
}
control.Duration = duration;
control.TaskCompletionSource = tcs;
control.Name = ControlName;
activeForm.Controls.Add(control);
SetPosition(activeForm, control, position);
control.BringToFront();
var timer = new Timer {
Interval = TimerInterval, Tag = control
};
timer.Tick += TimerTick;
timer.Start();
control.Tag = timer;
return(control);
}
