/// <summary>
/// Set whether the glass should be extended into the client space.
/// </summary>
/// <param name="form">The <see cref="System.Windows.Forms.Form"/> to be extended.</param>
/// <param name="value">The enabled value.</param>
public void SetGlassEnabled(Form form, bool value)
{
GlassFormProperties prop = GetFormProperties(form);
prop.GlassEnabled = value;
GlassifyForm(form);
}
/// <summary>
/// Sets the glass margins.
/// </summary>
/// <param name="form">The <see cref="System.Windows.Forms.Form"/> to be extended.</param>
/// <param name="value">The margins where the glass will be extended.</param>
public void SetGlassMargins(Form form, Padding value)
{
if (form == null)
{
throw new ArgumentNullException("form");
}
GlassFormProperties prop = GetFormProperties(form);
if (value == null || value == Padding.Empty)
{
prop.GlassMargins = Padding.Empty;
UnhookForm(form);
}
else
{
prop.GlassMargins = value;
form.Paint += new PaintEventHandler(form_Paint);
if (!form.IsDesignMode())
{
form.MouseDown += new MouseEventHandler(form_MouseDown);
form.MouseMove += new MouseEventHandler(form_MouseMove);
form.MouseUp += new MouseEventHandler(form_MouseUp);
form.Resize += new EventHandler(form_Resize);
form.Shown += new EventHandler(form_Shown);
}
}
form.Invalidate();
}
private void form_MouseUp(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
GlassFormProperties prop = GetFormProperties(sender as Form);
prop.FormMoveTracking = false;
}
}
private GlassFormProperties GetFormProperties(Form form)
{
if (!formProps.TryGetValue(form, out var prop))
{
formProps.Add(form, prop = new GlassFormProperties());
}
return(prop);
}
private static Rectangle GetNonGlassArea(Form form, GlassFormProperties prop)
{
if (prop == null)
{
return(form.ClientRectangle);
}
return(new Rectangle(form.ClientRectangle.Left + prop.GlassMargins.Left, form.ClientRectangle.Top + prop.GlassMargins.Top,
form.ClientRectangle.Width - prop.GlassMargins.Horizontal, form.ClientRectangle.Height - prop.GlassMargins.Vertical));
}
private void form_MouseDown(object sender, MouseEventArgs e)
{
if (e.Button == MouseButtons.Left)
{
GlassFormProperties prop = GetFormProperties(sender as Form);
if (prop.GlassMarginMovesForm)
{
prop.FormMoveTracking = true;
prop.FormMoveLastMousePos = ((Control)sender).PointToScreen(e.Location);
}
}
}
private void form_MouseMove(object sender, MouseEventArgs e)
{
GlassFormProperties prop = GetFormProperties(sender as Form);
if (prop.FormMoveTracking && !GetNonGlassArea(sender as Form, prop).Contains(e.Location))
{
Point screen = ((Control)sender).PointToScreen(e.Location);
Point diff = new Point(screen.X - prop.FormMoveLastMousePos.X, screen.Y - prop.FormMoveLastMousePos.Y);
Point loc = ((Control)sender).Location;
loc.Offset(diff);
((Control)sender).Location = loc;
prop.FormMoveLastMousePos = screen;
}
}
/// <summary>
/// Sets a value indicating whether clicking and dragging within the margin will move the form.
/// </summary>
/// <param name="form">The <see cref="System.Windows.Forms.Form"/> to be extended.</param>
/// <param name="value"><c>true</c> if clicking and dragging within the margin moves the form; otherwise, <c>false</c>.</param>
public void SetGlassMarginMovesForm(Form form, bool value)
{
GlassFormProperties prop = GetFormProperties(form);
prop.GlassMarginMovesForm = value;
}
private Rectangle GetNonGlassArea(Form form, GlassFormProperties prop)
{
if (prop == null)
return form.ClientRectangle;
return new Rectangle(form.ClientRectangle.Left + prop.GlassMargins.Left, form.ClientRectangle.Top + prop.GlassMargins.Top,
form.ClientRectangle.Width - prop.GlassMargins.Horizontal, form.ClientRectangle.Height - prop.GlassMargins.Vertical);
}
private GlassFormProperties GetFormProperties(Form form)
{
GlassFormProperties prop;
if (!formProps.TryGetValue(form, out prop))
formProps.Add(form, prop = new GlassFormProperties());
return prop;
}
