Exemplo n.º 1
0
        ///// <summary>
        ///// These messages allow us to create a map of slides and md5 hashes.  Unused.
        ///// </summary>
        ///// <param name="ism"></param>
        //internal void AddImageSheetMessage(UW.ClassroomPresenter.Network.Messages.Presentation.ImageSheetMessage ism) {
        //    if ((ism.Parent != null) && (ism.Parent.Parent != null) &&
        //        (ism.Parent is CP3Msgs.SlideInformationMessage) &&
        //        (ism.Parent.Parent is CP3Msgs.DeckInformationMessage)) {

        //        Debug.WriteLine("ImageSheetMessage: sheet=" + ism.TargetId.ToString() + ";slide=" + ism.Parent.TargetId.ToString() +
        //            ";deck=" + ism.Parent.Parent.TargetId.ToString() + ";hash=" + ism.MD5.ToString());
        //    }
        //}

        /// <summary>
        /// Text annotation add or update operation.
        /// </summary>
        /// <param name="textSheetMessage"></param>
        /// <returns></returns>
        internal object AddTextSheet(UW.ClassroomPresenter.Network.Messages.Presentation.TextSheetMessage tsm)
        {
            if ((tsm.Parent == null) || !(tsm.Parent is CP3Msgs.SlideInformationMessage))
            {
                warning += "Failed to locate slide for a text sheet.  Ignoring Text Annotation.  ";
                return(null);
            }

            Guid slideId = (Guid)tsm.Parent.TargetId;

            TableOfContents.TocEntry tocEntry = toc.LookupBySlideId(slideId);
            if (tocEntry == null)
            {
                warning += "Warning: Failed to find table of contents entry for a text annotation.  Ignoring the annotation.  ";
                return(null);
            }

            //WebViewer wants things scaled to 500x500 (this was a CP2 convention).
            Rectangle        r            = ((CP3Msgs.SheetMessage)tsm).Bounds;
            float            fX           = (float)r.X * 500F / getCurrentSlideWidth();
            float            fY           = (float)r.Y * 500F / getCurrentSlideHeight();
            Point            scaledOrigin = new Point((int)Math.Round(fX), (int)Math.Round(fY));
            Font             scaledFont   = new Font(tsm.font_.FontFamily, tsm.font_.Size * 500F / getCurrentSlideWidth(), tsm.font_.Style);
            int              scaledWidth  = r.Width * 500 / (int)getCurrentSlideWidth();
            int              scaledHeight = r.Height * 500 / (int)getCurrentSlideHeight();
            RTTextAnnotation rtta         = new RTTextAnnotation(scaledOrigin, scaledFont, tsm.color_, tsm.Text, (Guid)tsm.TargetId, tocEntry.DeckId, tocEntry.SlideIndex, scaledWidth, scaledHeight);

            return(rtta);
        }
        /// <summary>
        /// Send the current ink as a student submission slide
        /// </summary>
        /// <param name="sender">The object which sent this event, i.e. this class</param>
        /// <param name="args">The parameters for the property</param>
        private void HandleSendSubmission( object sender, PropertyEventArgs args )
        {
            if (this.m_SendingLock) return;

            using (Synchronizer.Lock(SubmissionStatusModel.GetInstance().SyncRoot)) {
                SubmissionStatusModel.GetInstance().SubmissionStatus = SubmissionStatusModel.Status.NotReceived;
            }

            ///declare variables we will be using
            UW.ClassroomPresenter.Network.Messages.Message pres, deck, slide, sheet;
            // Construct the message to send
            using( this.m_Model.Workspace.Lock() ) {
                // Add the presentation
                if( this.m_Model.Workspace.CurrentPresentation == null )
                    return;
                ///the presentation message we will be sending
                pres = new PresentationInformationMessage( this.m_Model.Workspace.CurrentPresentation );
                pres.Group = Groups.Group.Submissions;

                //Add the current deck model that corresponds to this slide deck at the remote location
                if( (~this.m_Model.Workspace.CurrentDeckTraversal) == null )
                    return;
                using( Synchronizer.Lock( (~this.m_Model.Workspace.CurrentDeckTraversal).SyncRoot ) ) {
                    DeckModel dModel = (~this.m_Model.Workspace.CurrentDeckTraversal).Deck;
                    foreach( DeckPairModel match in this.m_Model.Workspace.DeckMatches ) {
                        ///check to see if the decks are the same
                        if( match.LocalDeckTraversal.Deck == (~this.m_Model.Workspace.CurrentDeckTraversal).Deck )
                            dModel = match.RemoteDeckTraversal.Deck;
                    }
                    ///create the deck message from this matched deck
                    deck = new DeckInformationMessage( dModel );
                    ///make the deck a submission type deck.
                    deck.Group = Groups.Group.Submissions;
                    ///tack this message onto the end.
                    pres.InsertChild( deck );

                    ///add the particular slide we're on the to message.
                    if( (~this.m_Model.Workspace.CurrentDeckTraversal).Current == null )
                        return;
                    using( Synchronizer.Lock( (~this.m_Model.Workspace.CurrentDeckTraversal).Current.Slide.SyncRoot ) ) {
                        // Add the Slide Message
                        slide = new StudentSubmissionSlideInformationMessage( (~this.m_Model.Workspace.CurrentDeckTraversal).Current.Slide, Guid.NewGuid(), Guid.NewGuid() );
                        slide.Group = Groups.Group.Submissions;
                        deck.InsertChild( slide );

                        // Find the correct user ink layer to send
                        RealTimeInkSheetModel m_Sheet = null;
                        int count = 0;
                        foreach( SheetModel s in (~this.m_Model.Workspace.CurrentDeckTraversal).Current.Slide.AnnotationSheets ) {
                            if( s is RealTimeInkSheetModel && (s.Disposition & SheetDisposition.Remote) == 0 ) {
                                m_Sheet = (RealTimeInkSheetModel)s;
                                count++;
                            }
                        }

                        // DEBUGGING
                        if( count > 1 )
                            Debug.Assert( true, "Bad Count", "Bad" );

                        // Find the existing ink on the slide
                        Ink extracted;
                        using( Synchronizer.Lock( m_Sheet.Ink.Strokes.SyncRoot ) ) {
                            // Ensure that each stroke has a Guid which will uniquely identify it on the remote side
                            foreach( Stroke stroke in m_Sheet.Ink.Strokes ) {
                                if( !stroke.ExtendedProperties.DoesPropertyExist( InkSheetMessage.StrokeIdExtendedProperty ) )
                                    stroke.ExtendedProperties.Add( InkSheetMessage.StrokeIdExtendedProperty, Guid.NewGuid().ToString() );
                            }
                            // Extract all of the strokes
                            extracted = m_Sheet.Ink.ExtractStrokes( m_Sheet.Ink.Strokes, ExtractFlags.CopyFromOriginal );
                        }

                        // Find the Realtime ink on the slide
                        RealTimeInkSheetModel newSheet = null;
                        using( Synchronizer.Lock( m_Sheet.SyncRoot ) ) {
                            newSheet = new RealTimeInkSheetModel( Guid.NewGuid(), m_Sheet.Disposition | SheetDisposition.Remote, m_Sheet.Bounds );
                            using( Synchronizer.Lock( newSheet.SyncRoot ) ) {
                                newSheet.CurrentDrawingAttributes = m_Sheet.CurrentDrawingAttributes;
                            }
                        }

                        // Add a message to *create* the student's RealTimeInkSheetModel on the instructor client (without any ink).
                        sheet = SheetMessage.ForSheet(newSheet, SheetMessage.SheetCollection.AnnotationSheets);
                        sheet.Group = Groups.Group.Submissions;
                        slide.InsertChild(sheet);

                        //Scale the ink if necessary
                        if (ViewerStateModel.NonStandardDpi) {
                            extracted.Strokes.Transform(ViewerStateModel.DpiNormalizationSendMatrix);
                        }

                        // Add a message to copy the ink from the student's RealTimeInkSheetModel to the just-created sheet on the instructor.
                        sheet = new InkSheetStrokesAddedMessage(newSheet, (Guid)slide.TargetId, SheetMessage.SheetCollection.AnnotationSheets, extracted);
                        sheet.Group = Groups.Group.Submissions;
                        slide.InsertChild( sheet );

                        ///Add each text and image sheet into the message as children of the ink sheet if it is public
                        foreach( SheetModel s in (~this.m_Model.Workspace.CurrentDeckTraversal).Current.Slide.AnnotationSheets ) {
                            if( s is TextSheetModel && !(s is StatusLabel) && (s.Disposition & SheetDisposition.Remote) == 0) {
                                TextSheetModel text_sheet = (TextSheetModel) s;
                                text_sheet = (TextSheetModel) text_sheet.Clone();
                                ///some ugly code here due to synchronization
                                bool sheet_is_public;
                                using (Synchronizer.Lock(text_sheet.SyncRoot)) {
                                    sheet_is_public = text_sheet.IsPublic;
                                }
                                if (sheet_is_public) {
                                    TextSheetMessage t_message = new TextSheetMessage(text_sheet, SheetMessage.SheetCollection.AnnotationSheets);
                                    t_message.Group = Groups.Group.Submissions;
                                    slide.InsertChild(t_message);
                                }
                            }
                            if (s is ImageSheetModel && !(s is StatusLabel) && (s.Disposition & SheetDisposition.Remote) == 0) {
                                ImageSheetModel image_sheet = (ImageSheetModel)s;
                                image_sheet = (ImageSheetModel) image_sheet.Clone();
                                ImageSheetMessage i_message = new ImageSheetMessage(image_sheet, SheetMessage.SheetCollection.AnnotationSheets);
                                i_message.Group = Groups.Group.Submissions;
                                slide.InsertChild(i_message);

                            }
                        }
                        //Lock the current sending.
                        this.LockSending();

                        // Send the message
                        this.m_Sender.Send(pres);
                    }
                }
            }
        }