/// <summary>
/// Gets a Rectangle that is sized for being used to paint the value properly in Visual Studio's
/// (or wherever it is used) Property Window.
/// </summary>
/// <param name="td">TextDir to base the Rectangle size and position on.</param>
/// <param name="rct">Starting Rectangle.</param>
/// <returns></returns>
private Rectangle GetModifiedClientRectangle(MWCommon.TextDir td, Rectangle rct)
{
Rectangle result = rct;
switch (td)
{
case MWCommon.TextDir.Normal:
result = new Rectangle(rct.X + 1, rct.Y, rct.Width, rct.Height);
break;
case MWCommon.TextDir.UpsideDown:
result = new Rectangle(rct.X - 2, rct.Y - 1, rct.Width, rct.Height);
break;
case MWCommon.TextDir.Left:
result = new Rectangle(rct.X - 5, rct.Y + 4, rct.Width, rct.Height);
break;
case MWCommon.TextDir.Right:
result = new Rectangle(rct.X - 2, rct.Y + 1, rct.Width, rct.Height);
break;
default:
result = rct;
break;
}
return(result);
}
/// <summary>
/// This takes care of the actual value-change of the property.
/// </summary>
/// <param name="itdc">Standard ITypeDescriptorContext object.</param>
/// <param name="isp">Standard IServiceProvider object.</param>
/// <param name="value">The value as an object.</param>
/// <returns>The new value as an object.</returns>
public override object EditValue(ITypeDescriptorContext itdc, IServiceProvider isp, object value)
{
if (itdc != null && itdc.Instance != null && isp != null)
{
iwfes = (IWindowsFormsEditorService)isp.GetService(typeof(IWindowsFormsEditorService));
if (iwfes != null)
{
MWCommon.TextDir td = MWCommon.TextDir.Normal;
if (value is MWCommon.TextDir)
{
td = (MWCommon.TextDir)itdc.PropertyDescriptor.GetValue(itdc.Instance);
pd = itdc.PropertyDescriptor;
oInstance = itdc.Instance;
}
EditorTextDirUI etdui = new EditorTextDirUI();
etdui.IWFES = iwfes;
etdui.ITDC = itdc;
etdui.TextDir = (MWCommon.TextDir)value;
etdui.TextDirChanged += new EditorTextDirUI.TextDirEventHandler(this.ValueChanged);
iwfes.DropDownControl(etdui);
value = etdui.TextDir;
}
}
return(value);
}
/// <summary>
/// Paint the value in Visual Studio's (or wherever it is used) Property Window.
/// </summary>
/// <param name="e">Standard PaintValueEventArgs object.</param>
public override void PaintValue(PaintValueEventArgs e)
{
//See e.Graphics.Restore further down.
GraphicsState gs = e.Graphics.Save();
MWCommon.TextDir td = (MWCommon.TextDir)e.Value;
StringFormat strfmt = StringFormat.GenericDefault;
strfmt.Alignment = StringAlignment.Center;
strfmt.LineAlignment = StringAlignment.Center;
switch (td)
{
case MWCommon.TextDir.Normal:
break;
case MWCommon.TextDir.UpsideDown:
e.Graphics.RotateTransform(180);
e.Graphics.TranslateTransform(-e.Bounds.Width, -e.Bounds.Height);
break;
case MWCommon.TextDir.Left:
e.Graphics.RotateTransform(270);
e.Graphics.TranslateTransform(-e.Bounds.Height, 0);
break;
case MWCommon.TextDir.Right:
e.Graphics.RotateTransform(90);
e.Graphics.TranslateTransform(0, -e.Bounds.Width);
break;
}
e.Graphics.DrawString("A", new Font("Arial", 8), new SolidBrush(Color.Black), GetModifiedClientRectangle(td, e.Bounds), strfmt);
//Important. Without this Visual Studio (or whatever) cannot draw its Property Window properly.
e.Graphics.Restore(gs);
base.PaintValue(e);
}