private bool OnQuestionPointerStrokeReceived(Event ev)
{
if (!(IsStudent && LessonExists))
{
return(true);
}
var sharedPointer = ev.get <SharedPointer>();
Application.Current.Dispatcher.Invoke(() =>
{
// If we're not sync or on Question mode, we don't care
if (Catalog.CurrentPageName != "QuestionsPage")
{
return;
}
int position;
try
{
position = Data.Lesson.Exercises.GetPositionOfUID(sharedPointer.Offset);
// We select the good slide
(QuestionsPage.LessonPage as Exercises).GoingToPage(position);
// We tell the PointerManager that we want to show a new stroke
PointerManager.Instance.DrawStroke(StrokeConverter.ToWindowsStroke(sharedPointer.Stroke));
}
catch (Exception)
{
Console.WriteLine("UID (Exercise Pointer) not found.");
}
});
return(true);
}
/// <summary>
/// A Stroke has been received (inner event) and we trigger the Deletion event.
/// </summary>
/// <param name="stroke">The stroke.</param>
public void StrokeAdded(Stroke stroke)
{
var currentPageName = Catalog.Instance.CurrentPageName;
if (currentPageName == "MainPage" || currentPageName == "QuestionsPage")
{
var currentLesson = currentPageName == "MainPage"
? (Catalog.Instance.GetPage(currentPageName) as MainPage).LessonPage.DataContext as Lesson
: (Catalog.Instance.GetPage(currentPageName) as QuestionsPage).LayerStackDC.LessonViewModel;
// We don't send very small strokes
if (stroke.StylusPoints.Count > 2 &&
Data.Instance.Role == Role.TEACHER &&
currentPageName != "FreeNotesPage" &&
currentLesson.IsSync == true)
{
// Packing and sending our stroke and context to share with students
LinkIOImp.Instance.send(
currentPageName == "MainPage" ? "slide-pointer" : "question-pointer",
new SharedPointer(
LS.LessonViewModel.CurrentPageIndex,
StrokeConverter.ToNineStroke(stroke)));
}
// Creation of a new timer, execution every quantum
var timer = new Timer(_quantum);
var nbPtsPerTick = HowManyPointPerTick(stroke.StylusPoints.Count);
// Setup with the timer collection, StrokeCollection and the right Stroke
timer.Elapsed += (src, args) => TimedDeletion(
src,
new Tuple <StrokeCollection, Stroke, int>(
LS.PointerStrokes,
stroke,
nbPtsPerTick));
timer.Start();
}
}
private bool OnSlidePointerStrokeReceived(Event ev)
{
if (!(IsStudent && LessonExists))
{
return(true);
}
var sharedPointer = ev.get <SharedPointer>();
Application.Current.Dispatcher.BeginInvoke(
new Action(
() =>
{
var lesson = (MainPage.LessonPage.DataContext as Lesson);
// If we're not sync or on Question mode, we don't care
if (!lesson.IsSync.Value || Catalog.CurrentPageName != "MainPage")
{
return;
}
// We redirect to the correct view (beacause, if we are on FreeNotesPage in Sync mode, we want to follow
Catalog.NavigateTo("MainPage");
// We select the good slide
lesson.ChangeCurrentPage(sharedPointer.Offset);
// We tell the PointerManager that we want to show a new stroke
PointerManager.Instance.DrawStroke(StrokeConverter.ToWindowsStroke(sharedPointer.Stroke));
}
),
DispatcherPriority.Normal
);
return(true);
}