/// <summary>
/// Retrieves the size of a rectangular area into which a control can be fitted.
/// </summary>
/// <param name="proposedSize">The custom-sized area for a control.</param>
/// <returns>
/// An ordered pair of type <see cref="T:System.Drawing.Size"/> representing the width and height of a rectangle.
/// </returns>
public override Size GetPreferredSize(Size proposedSize)
{
if (Text.Length <= 0 || rnd == null)
{
return(base.GetPreferredSize(proposedSize));
}
using (var g = CreateGraphics())
{
var tff = this.BuildTextFormatFlags();
Rectangle tRect, iRect;
ExtensionMethods.CalcImageAndTextBounds(new Rectangle(Point.Empty, proposedSize), Text, Font, Image, TextAlign, ImageAlign, TextImageRelation, !AutoSize, 0, ref tff, out tRect, out iRect);
return(System.Drawing.Size.Add(Rectangle.Union(tRect, iRect).Size, Padding.Size));
}
}
/// <summary>
/// Raises the Paint event.
/// </summary>
/// <param name="e">A <see cref="T:System.Windows.Forms.PaintEventArgs" /> that contains the event data.</param>
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
try
{
// Setup variables
var useVs = rnd != null && Application.RenderWithVisualStyles;
var r = DeflateRect(ClientRectangle, Padding);
var tff = this.BuildTextFormatFlags();
Rectangle tRect, iRect;
ExtensionMethods.CalcImageAndTextBounds(r, Text, Font, Image, TextAlign, ImageAlign, TextImageRelation, !AutoSize, 0,
ref tff, out tRect, out iRect);
// Draw background
if (SupportGlass && !this.IsDesignMode() && DesktopWindowManager.IsCompositionEnabled())
{
e.Graphics.Clear(Color.Black);
}
else
{
if (useVs)
{
rnd.DrawBackground(e.Graphics, ClientRectangle, e.ClipRectangle);
}
else
{
e.Graphics.Clear(BackColor);
}
}
// Draw image
if (Image != null)
{
if (useVs)
{
rnd.DrawImage(e.Graphics, iRect, Image);
}
else
{
e.Graphics.DrawImage(Image, iRect);
}
}
// Draw text
if (Text.Length > 0)
{
var rtl = this.GetRightToLeftProperty();
if (useVs)
{
if (rtl == RightToLeft.Yes)
{
tff |= TextFormatFlags.RightToLeft;
}
if (GlowingText)
{
rnd.DrawGlowingText(e.Graphics, tRect, Text, Font, ForeColor, tff);
}
else
{
rnd.DrawText(e.Graphics, tRect, Text, !Enabled, tff);
}
}
else
{
var br = DesktopWindowManager.IsCompositionEnabled() ? SystemBrushes.ActiveCaptionText : SystemBrushes.ControlText;
var sf = new StringFormat(StringFormat.GenericDefault);
if (rtl == RightToLeft.Yes)
{
sf.FormatFlags |= StringFormatFlags.DirectionRightToLeft;
}
e.Graphics.DrawString(Text, Font, br, ClientRectangle, sf);
}
}
}
catch { }
}