/// <summary>
/// Draws the background of the parent control giving a transparent effect
/// </summary>
/// <param name="graphics">Drawing surface</param>
/// <param name="form">Parent Container that implements <see cref="IControlBackground"/></param>
/// <param name="bounds">Bounds of the Control</param>
/// <param name="parent">Instance of the Parent Container</param>
public void DrawBackground(Graphics graphics, IControlBackground form, Rectangle bounds, Control parent)
{
if (form.BackgroundImage == null)
{
return;
}
var g = GraphicsEx.FromGraphics(graphics);
switch (form.BackgroundDrawMode)
{
case ImageDrawMode.Normal:
g.DrawImage(form.BackgroundImage, 0, 0, bounds);
break;
case ImageDrawMode.Center:
Point location = GraphicsEx.GetCenter(form.BackgroundImage.Size, parent.ClientSize);
g.DrawImage(form.BackgroundImage,
location.X,
location.Y,
new Rectangle(bounds.X,
bounds.Y,
form.BackgroundImage.Width,
form.BackgroundImage.Height));
break;
case ImageDrawMode.Stretch:
using (Image image = ImageManipulator.Stretch(form.BackgroundImage, parent.ClientSize))
g.DrawImage(image, 0, 0, bounds);
break;
default:
throw new ArgumentOutOfRangeException();
}
}
/// <summary>
/// Draws the <see cref="BackgroundImage"/> property onto <see cref="MobileUserControl"/>
/// </summary>
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (BackgroundImage == null)
{
return;
}
var image = BackgroundImage;
if (AutoScaleBackgroundImage && Dpi.IsHiDpi)
{
image = ImageManipulator.Stretch(BackgroundImage, Dpi.ScaleSize(BackgroundImage.Size));
}
var gfx = GraphicsEx.FromGraphics(e.Graphics);
gfx.DrawImage(image, ClientSize, BackgroundDrawMode);
}
