//-------------------------------------------------------------------------
/// <summary>
/// Displays the custom caret on the specified Control. The cursor position
/// is determined automatically. Only one caret instance can exist at any
/// given time. Therefore a caret should only be displayed if the
/// <see cref="Control"/> has focus. This can be automatically achieved by
/// using <see cref="ApplyBinding"/>. When the caret should not longer be
/// visible, use <see cref="HideCursor"/>.
/// </summary>
/// <param name="control">The caret will be displayed in this control.</param>
public void DisplayCaret(Control control)
{
if (control == null)
{
return;
}
if (this.originalUserBitmap != null)
{
this.image = new Bitmap(this.originalUserBitmap);
using (BitmapDataHandler pixelData = new BitmapDataHandler(image))
{
pixelData.Enumerate((pixel) =>
{
pixel.R ^= ParentControl.BackColor.R;
pixel.G ^= ParentControl.BackColor.G;
pixel.B ^= ParentControl.BackColor.B;
});
}
}
else
{
int caretHeight = this.height ?? ParentControl.Font.Height;
this.image = new Bitmap(Width, caretHeight);
using (Graphics cursorGraphics = Graphics.FromImage(this.image))
{
using (SolidBrush brush = new SolidBrush(XorColorMask(Color, ParentControl.BackColor)))
{
cursorGraphics.FillRectangle(brush, 0, 0, Width, caretHeight);
}
}
}
if (CreateCaret(ParentControl.Handle, this.image.GetHbitmap(), 0, 0))
{
ShowCaret(ParentControl.Handle);
}
}
//-------------------------------------------------------------------------
/// <summary>
/// Displays the custom caret on the specified Control. The cursor position
/// is determined automatically. Only one caret instance can exist at any
/// given time. Therefore a caret should only be displayed if the
/// <see cref="Control"/> has focus. This can be automatically achieved by
/// using <see cref="ApplyBinding"/>. When the caret should not longer be
/// visible, use <see cref="HideCursor"/>.
/// </summary>
/// <param name="control">The caret will be displayed in this control.</param>
public void DisplayCaret(Control control)
{
if (control == null)
{
return;
}
if (this.originalUserBitmap != null)
{
this.image = new Bitmap(this.originalUserBitmap);
using (BitmapDataHandler pixelData = new BitmapDataHandler(image))
{
pixelData.Enumerate((pixel) =>
{
pixel.R ^= ParentControl.BackColor.R;
pixel.G ^= ParentControl.BackColor.G;
pixel.B ^= ParentControl.BackColor.B;
});
}
}
else
{
int caretHeight = this.height ?? ParentControl.Font.Height;
this.image = new Bitmap(Width, caretHeight);
using (Graphics cursorGraphics = Graphics.FromImage(this.image))
{
using (SolidBrush brush = new SolidBrush(XorColorMask(Color, ParentControl.BackColor)))
{
cursorGraphics.FillRectangle(brush, 0, 0, Width, caretHeight);
}
}
}
if (CreateCaret(ParentControl.Handle, this.image.GetHbitmap(), 0, 0))
{
ShowCaret(ParentControl.Handle);
}
}
