/// <summary>
/// Initializes a new <see cref="ColorBarGraphic"/> with the specified physical dimensions and orientation.
/// </summary>
/// <param name="size">The desired physical size of the colour bar.</param>
/// <param name="orientation">A value specifying the desired orientation of the colour bar.</param>
public ColorBarGraphic(Size size, ColorBarOrientation orientation)
{
_size = size;
_location = new PointF(0, 0);
_orientation = orientation;
_reversed = false;
_gradientPixelData = null;
_colorMapManagerProxy = new ColorMapManager(new ColorMapInstallerProxy());
}
/// <summary>
/// Called to unload the colour bar graphic and any associated resources.
/// </summary>
protected virtual void UnloadColorBar()
{
if (_colorBar != null)
{
base.Graphics.Remove(_colorBar);
_colorBar.Dispose();
_colorBar = null;
}
if (_gradientPixelData != null)
{
_gradientPixelData.Dispose();
_gradientPixelData = null;
}
}
/// <summary>
/// Called to create a vertical black and white gradient graphic with black at the top and white at the bottom.
/// </summary>
/// <remarks>
/// This method is called to create a normalized gradient. User options such as <see cref="Reversed"/> and <see cref="Orientation"/> are applied automatically.
/// </remarks>
/// <returns>A new normalized gradient graphic.</returns>
protected virtual GrayscaleImageGraphic CreateVerticalGradient()
{
if (_gradientPixelData != null)
_gradientPixelData.Dispose();
_gradientPixelData = GradientPixelData.GetGradient(this.Length, this.Width);
return new GrayscaleImageGraphic(_gradientPixelData.Length, _gradientPixelData.Width, 8, 8, 7, false, false, 1, 0, () => _gradientPixelData.Data);
}
/// <summary>
/// Releases all resources used by this <see cref="ColorBarGraphic"/>.
/// </summary>
protected override void Dispose(bool disposing)
{
if (disposing)
{
_colorBar = null;
if (_gradientPixelData != null)
{
_gradientPixelData.Dispose();
_gradientPixelData = null;
}
}
base.Dispose(disposing);
}
/// <summary>
/// Cloning constructor.
/// </summary>
/// <param name="source">The source object from which to clone.</param>
/// <param name="context">The cloning context object.</param>
protected ColorBarGraphic(ColorBarGraphic source, ICloningContext context)
{
context.CloneFields(source, this);
_colorMapManagerProxy = new ColorMapManager(new ColorMapInstallerProxy());
if (source._colorMapManagerProxy.ColorMap != null)
_colorMapManagerProxy.SetMemento(source._colorMapManagerProxy.CreateMemento());
if (source._gradientPixelData != null)
_gradientPixelData = source._gradientPixelData.Clone();
}
