/// <summary>
/// Sets the Drawstate of the window. Can the user draw or interact with desktop and/or see what was drawn earlier.
/// </summary>
/// <param name="state"></param>
internal void ShowState(DrawState state)
{
switch (state)
{
case DrawState.TransparentCanDrawNoDesktopInteraction:
//This first state is not really transparent, a bitmap of the desktop is used as
//background. Necessary to use the InkCanvas to draw. InkCanvas cannot be used if the
//window is truly transparent
DrawArea.EditingMode = InkCanvasEditingMode.Ink;
MakeOpaqueToEvents();
IsHitTestVisible = true;
Opacity = 1;
using (BitmapHandler handler = new BitmapHandler())
{
BackGroundImage.Source = handler.GetDesktopBitmapSource((int)Left, (int)Top, (int)Width, (int)Height);
}
ClearValue(Window.BackgroundProperty);
Show();
CurrentState = state;
break;
case DrawState.SemitransparentDrawingFixed:
//Changes to a semitransparent state where the drawing is fixed. But it is possible to interact
//with the desktop.
DrawArea.EditingMode = InkCanvasEditingMode.Ink;
MakeTransparentToEvents();
IsHitTestVisible = false;
Opacity = 0.5;
BackGroundImage.ClearValue(Image.SourceProperty);
Background = Brushes.White;
Show();
CurrentState = state;
break;
case DrawState.TransparentNoDrawing:
DrawArea.EditingMode = InkCanvasEditingMode.Ink;
MakeOpaqueToEvents();
IsHitTestVisible = true;
Opacity = 0;
BackGroundImage.ClearValue(Image.SourceProperty);
Background = Brushes.Transparent;
Show();
CurrentState = state;
break;
default:
throw new ArgumentOutOfRangeException("state");
}
}
public static void Load()
{
_objs = new BaseObject[30];
for (int i = 0; i < _objs.Length; i++)
{
if (i % 2 == 0)
{
_objs[i] = new BaseObject(new Point(600, i * 20), new Point(-i, -i), new Size(30, 30));
}
else
{
_objs[i] = new Star(new Point(600, i * 20), new Point(-i, 0), new Size(5, 5));
}
}
plnt = new BackGroundImage(Width, Height);
}
