/*
* public DeckSlideContentMessage( DeckModel deck, ByteArray hash )
* : this( deck, hash, 320, 240, 32, System.Drawing.Imaging.ImageFormat.Png ) {
* }
*
* private bool Stub() {
* return true;
* }
*
* public DeckSlideContentMessage( DeckModel deck, ByteArray hash, int width, int height, int depth, System.Drawing.Imaging.ImageFormat fmt ) : base( hash ) {
* using( Synchronizer.Lock( deck.SyncRoot ) ) {
* Image image = deck.GetSlideContent( hash );
*
* if( image == null )
* throw new ArgumentException( "The specified ByteArray does not map to slide content in the specified deck.", "hash" );
*
* Image.GetThumbnailImageAbort callback = new Image.GetThumbnailImageAbort( Stub );
* Image small = image.GetThumbnailImage( width, height, callback, System.IntPtr.Zero );
* string tempFile = System.IO.Path.GetTempFileName();
* small.Save( tempFile, fmt );
* byte[] smallData = System.IO.File.ReadAllBytes( tempFile );
* System.IO.MemoryStream ms = new System.IO.MemoryStream( smallData );
* Image newSmall = Image.FromStream( ms );
*
* // Cleanup Temp File
* this.Target = this.Content = new ImageHashtable.ImageHashTableItem( hash, newSmall );
* this.AddLocalRef( this.Target );
* }
* }
*/
protected override bool UpdateTarget(ReceiveContext context)
{
#if GENERIC_SERIALIZATION
if (this.Content == null)
{
return(true);
}
#else
Debug.Assert(this.Content != null);
#endif
if (this.Content.image == null)
{
throw new ArgumentException("The deserialized content image is null.", "Content");
}
this.Target = this.Content;
DeckModel deck = this.Parent != null ? this.Parent.Target as DeckModel : null;
if (deck != null)
{
using (Synchronizer.Lock(deck.SyncRoot)) {
// Note: If the deck already has content with this hash, nothing will happen.
deck.AddSlideContent(this.Content.key, this.Content.image);
}
}
return(true);
}
/// <summary>
/// Create a slide model from a powerpoint slide
/// </summary>
/// <param name="pageSetup"></param>
/// <param name="pptpm"></param>
/// <param name="deck"></param>
/// <param name="tempFileCollection"></param>
/// <param name="dirpath"></param>
/// <param name="currentSlide"></param>
/// <returns></returns>
private static SlideModel CreateSlide(PowerPoint.PageSetup pageSetup, PPTPaneManagement.PPTPaneManager pptpm, DeckModel deck, TempFileCollection tempFileCollection, string dirpath, PowerPoint._Slide currentSlide)
{
int slideWidth = (int)pageSetup.SlideWidth; //Standard = 720 => 6000
int slideHeight = (int)pageSetup.SlideHeight; //Standard = 540 => 4500
float emfWidth = slideWidth * 25 / 3;
float emfHeight = slideHeight * 25 / 3;
PowerPoint.Shapes currentShapes = currentSlide.Shapes;
List <TaggedShape> taggedShapeList = PPTDeckIO.BuildTaggedShapeList(currentShapes, pptpm);
//Create a new SlideModel
SlideModel newSlideModel = new SlideModel(Guid.NewGuid(), new LocalId(), SlideDisposition.Empty, new Rectangle(0, 0, slideWidth, slideHeight));
//Lock it
using (Synchronizer.Lock(newSlideModel.SyncRoot)) {
//Set the slide's title
newSlideModel.Title = PPTDeckIO.FindSlideTitle(taggedShapeList);
PPTDeckIO.MakeShapesInvisible(currentShapes);
//Create the Background image
//Generate a new filename
string filename = PPTDeckIO.GenerateFilename();
bool bitmapMode = true;
if (bitmapMode)
{
filename = dirpath + "\\" + filename + ".JPG";
currentSlide.Export(filename, "JPG", 0, 0);
// Need to also export as EMF to get the size of the slide in inches
currentSlide.Export(filename + "_TEMP", "EMF", 0, 0);
tempFileCollection.AddFile(filename + "_TEMP", false);
}
else
{
filename = dirpath + "\\" + filename + ".emf";
currentSlide.Export(filename, "EMF", 0, 0);
}
tempFileCollection.AddFile(filename, false);
//Compute the MD5 of the BG
FileStream fs = new FileStream(filename, FileMode.Open, FileAccess.Read);
MD5 md5Provider = new MD5CryptoServiceProvider();
byte[] md5 = md5Provider.ComputeHash(fs);
fs.Seek(0, SeekOrigin.Begin);
Image image = Image.FromStream(fs);
if (bitmapMode)
{
image = DisassociateBitmap(image);
}
fs.Close();
// Open the EMF version if we used a bitmap to get the conversion
if (bitmapMode)
{
FileStream fsEMF = new FileStream(filename + "_TEMP", FileMode.Open, FileAccess.Read);
Image image_emf = Image.FromStream(fsEMF);
emfWidth = image_emf.Width;
emfHeight = image_emf.Height;
fsEMF.Close();
image_emf.Dispose();
}
else
{
emfWidth = image.Width;
emfHeight = image.Height;
}
//Create the ImageSheet
ImageSheetModel sheet = new ImageSheetModel(deck, Guid.NewGuid(), Model.Presentation.SheetDisposition.Background,
new Rectangle(0, 0, slideWidth, slideHeight), (ByteArray)md5, 1);
//Add the ImageSheet to the Slide
newSlideModel.ContentSheets.Add(sheet);
//Add the Image+MD5 to the deck
deck.AddSlideContent((ByteArray)md5, image);
// Restore visibility - this makes everything visible - a bug?
PPTDeckIO.MakeShapesVisible(currentShapes);
List <List <TaggedShape> > layerList = PPTDeckIO.SeparateIntoLayers(taggedShapeList);
int startHeight = 2;
foreach (List <TaggedShape> layer in layerList)
{
PPTDeckIO.ProcessLayer(layer, tempFileCollection, currentShapes, deck, newSlideModel,
slideWidth / emfWidth, slideHeight / emfHeight, startHeight++);
}
//Add SlideModel to the deck
deck.InsertSlide(newSlideModel);
}
return(newSlideModel);
}
/// <summary>
/// Handle the receipt of this message
/// </summary>
/// <param name="context">The context of the receiver from which the message was sent</param>
protected override bool UpdateTarget(ReceiveContext context)
{
#if DEBUG
// Add logging of slide change events
string machine_name = "";
string machine_guid = "";
using (Synchronizer.Lock(context.Participant.SyncRoot)) {
machine_name = context.Participant.HumanName;
machine_guid = context.Participant.Guid.ToString();
}
Debug.WriteLine(string.Format("SUBMISSION RCVD ({0}): Machine -- {1}, GUID -- {2}", System.DateTime.Now.Ticks, machine_name, machine_guid));
#endif
SlideModel slide = this.Target as SlideModel;
// Only create student submissions from slides that exist on the client machine
// TODO CMPRINCE: Should we create these anyway???
if (slide != null)
{
// Get the student submissions deck
DeckModel ssDeck = GetPresentationStudentSubmissionsDeck();
if (ssDeck != null)
{
// Check if this entry already exists
using (Synchronizer.Lock(ssDeck.TableOfContents.SyncRoot)) {
foreach (TableOfContentsModel.Entry ent in ssDeck.TableOfContents.Entries)
{
if (ent.Id == this.TOCEntryGuid)
{
this.Target = ent.Slide;
return(false);
}
}
}
// Create the new slide to add
SlideModel newSlide = new SlideModel(this.SlideGuid, this.LocalId, SlideDisposition.Remote | SlideDisposition.StudentSubmission, this.Bounds, (Guid)this.TargetId);
this.Target = newSlide;
// Make a list of image content sheets that need to be added to the deck.
List <ImageSheetModel> images = new List <ImageSheetModel>();
// Update the fields of the slide
using (Synchronizer.Lock(newSlide.SyncRoot)) {
using (Synchronizer.Lock(slide.SyncRoot)) {
newSlide.Title = this.Title;
newSlide.Bounds = this.Bounds;
newSlide.Zoom = this.Zoom;
newSlide.BackgroundColor = this.SlideBackgroundColor;
newSlide.BackgroundTemplate = this.SlideBackgroundTemplate;
newSlide.SubmissionSlideGuid = this.SubmissionSlideGuid;
newSlide.SubmissionStyle = this.SubmissionStyle;
//If the slide background is null, then update the slide background with deck setting
if (this.SlideBackgroundColor == Color.Empty && this.Parent is DeckInformationMessage)
{
newSlide.BackgroundColor = ((DeckInformationMessage)this.Parent).DeckBackgroundColor;
}
if (this.SlideBackgroundTemplate == null && this.Parent is DeckInformationMessage)
{
newSlide.BackgroundTemplate = ((DeckInformationMessage)this.Parent).DeckBackgroundTemplate;
}
// Copy all of the content sheets.
// Because ContentSheets do not change, there is no
// need to do a deep copy (special case for ImageSheetModels).
foreach (SheetModel s in slide.ContentSheets)
{
newSlide.ContentSheets.Add(s);
// Queue up any image content to be added the deck below.
ImageSheetModel ism = s as ImageSheetModel;
if (ism != null)
{
images.Add(ism);
}
}
// Make a deep copy of all the ink sheets
foreach (SheetModel s in slide.AnnotationSheets)
{
SheetModel newSheet = UW.ClassroomPresenter.Model.Presentation.SheetModel.SheetDeepRemoteCopyHelper(s);
newSlide.AnnotationSheets.Add(newSheet);
// Queue up any image content to be added the deck below.
ImageSheetModel ism = s as ImageSheetModel;
if (ism != null)
{
images.Add(ism);
}
}
}
}
using (Synchronizer.Lock(ssDeck.SyncRoot)) {
// Add the slide content to the deck.
foreach (ImageSheetModel ism in images)
{
Image image = ism.Image;
if (image == null)
{
using (Synchronizer.Lock(ism.Deck.SyncRoot))
using (Synchronizer.Lock(ism.SyncRoot))
image = ism.Deck.GetSlideContent(ism.MD5);
}
if (image != null)
{
ssDeck.AddSlideContent(ism.MD5, image);
}
}
// Add the slide to the deck.
ssDeck.InsertSlide(newSlide);
AddLocalRef(newSlide.Id, newSlide);
}
// Add an entry to the deck traversal so that we can navigate to the slide
using (Synchronizer.Lock(ssDeck.TableOfContents.SyncRoot)) {
TableOfContentsModel.Entry e = new TableOfContentsModel.Entry(this.TOCEntryGuid, ssDeck.TableOfContents, newSlide);
ssDeck.TableOfContents.Entries.Add(e);
AddLocalRef(e.Id, e);
}
}
}
// Fix Bug 803: "Erased ink and text still shows up in student submissions".
// We've updated our target with 'newSheet', which is NOT the real target!
// Child messages should be able to access this target, but we don't want to
// save the 'newSheet' in the targets table. We want to keep the original sheet.
return(false);
}
