bool IUIElementDrawFilter.DrawElement(DrawPhase drawPhase, ref UIElementDrawParams drawParams)
{
switch (drawPhase)
{
case DrawPhase.BeforeDrawImage:
ImageUIElement imageElement = (ImageUIElement)drawParams.Element;
Image image = imageElement.Image;
int availableHeight = drawParams.Element.RectInsideBorders.Height;
float ratio = (float)availableHeight / (float)image.Height;
float newHeight = image.Height * ratio;
float newWidth = image.Width * ratio;
Rectangle rect = new Rectangle(
imageElement.Rect.X,
imageElement.Rect.Y,
(int)(newWidth),
(int)(newHeight)
);
// Draw the scaled image.
drawParams.Graphics.DrawImage(image, rect);
// This tells the grid not to draw the image (since we've already drawn it).
return(true);
}
return(false);
}
/// <summary>
/// Called after an element's ChildElements have been
/// created. The child element's can be repositioned here
/// and/or new element's can be added.
/// </summary>
/// <param name="parent">The <see cref="T:Infragistics.Win.UIElement" /> whose child elements have been created/positioned.</param>
/// <exception cref="System.NotImplementedException"></exception>
public void AfterCreateChildElements(UIElement parent)
{
if (parent is MoreActivityIndicatorUIElement)
{
ImageUIElement imageElement = parent.GetDescendant(typeof(ImageUIElement)) as ImageUIElement;
if (imageElement != null)
{
imageElement.Image = Properties.Resources.MoreActivityIndicator_Down;
}
}
}