/// <summary>
/// Adds the renderer hook to a screen that has a viewRangen named WindowManager.VR_CENTER_NAME.
/// </summary>
/// <param name="screen">The screen.</param>
private void addRendererHookToScreen(BrailleIOScreen screen)
{
if (screen != null)
{
//try to get the main view range
if (screen.HasViewRange(WindowManager.VR_CENTER_NAME))
{
BrailleIOViewRange vr = screen.GetViewRange(WindowManager.VR_CENTER_NAME);
if (vr != null)
{
if (vr.IsImage() && vr.ContentRender != null && vr.ContentRender is IBrailleIOHookableRenderer)
{
((IBrailleIOHookableRenderer)vr.ContentRender).RegisterHook(BrailleDomFocusRenderer);
((IBrailleIOHookableRenderer)vr.ContentRender).RegisterHook(DrawSelectFocusRenderer);
((IBrailleIOHookableRenderer)vr.ContentRender).RegisterHook(TextRendererHook);
}
else
{
vr.RendererChanged += new EventHandler <EventArgs>(vr_RendererChanged);
}
}
}
}
}
