// I've isolated the layout specific code to this region. If you want to do something other than tiling, this is
// where you'll make your changes
/// <summary>
/// Calculate the extent of the view based on the available size
/// </summary>
/// <param name="availableSize">available size</param>
/// <param name="itemCount">number of data items</param>
/// <returns></returns>
private Size CalculateExtent(Size availableSize)
{
if (totalHeight > 0)
{
return(new Size(availableSize.Width, totalHeight));
}
// Die Gesamtgröße der Liste berechnen.
ItemsControl itemsControl = ItemsControl.GetItemsOwner(this);
// We need to access InternalChildren before the generator to work around a bug
UIElementCollection children = this.InternalChildren;
IItemContainerGenerator generator = this.ItemContainerGenerator;
// Get the generator position of the first visible data item
GeneratorPosition startPos = generator.GeneratorPositionFromIndex(0);
using (generator.StartAt(startPos, GeneratorDirection.Forward, true))
{
for (int itemIndex = 0; itemIndex < itemsControl.Items.Count; ++itemIndex)
{
itemsTopPosition.Add(totalHeight);
// Get or create the child
bool newlyRealized;
// UIElement child = generator.GenerateNext(out newlyRealized) as UIElement;
// generator.PrepareItemContainer(child);
// Measurements will depend on layout algorithm
//child.Measure(GetChildSize());
AlbumViewItem avi = itemsControl.Items[itemIndex] as AlbumViewItem;
if (avi != null)
{
double height = Math.Max((avi.Tracks.Count * 18) + 10, 110); // Minimale Höhe eines Albums
height = Math.Min(height, 367); // Maximale Höhe eines Albums
totalHeight += height;
itemsHeight.Add(height);
}
AlbumViewTitle title = itemsControl.Items[itemIndex] as AlbumViewTitle;
if (title != null)
{
double height = 18;
totalHeight += height;
itemsHeight.Add(height);
}
}
}
generator.RemoveAll();
// See how big we are
return(new Size(this.ActualWidth, totalHeight));
}
void bwAlbumView_DoWork(object sender, DoWorkEventArgs e)
{
FieldCollection fc = new FieldCollection();
fc.AddRange(new Field[] { Field.CDID, Field.Title, Field.ArchiveNumber, Field.CDCoverFront, Field.YearRecorded,
Field.TrackNumber, Field.TrackTitle, Field.TrackLength, Field.TrackRating, Field.TrackSoundFile,
Field.ArtistCDName, Field.ArtistCDSaveAs, Field.ArtistTrackName, Field.Category, Field.ComposerTrackName });
int count = 0;
SortFieldCollection sfc = new SortFieldCollection();
sfc.Add(Field.ArtistCDSaveAs);
sfc.Add(Field.Title);
sfc.Add(Field.CDID);
// Die Verzeichnisansicht immer sortiert nach Dateiname
if (this.ShowItemType == ShowItemType.Directory)
{
sfc.Add(Field.TrackSoundFile);
}
else
{
sfc.Add(Field.TrackNumber);
}
SafeObservableCollection <AlbumViewItemBase> items = new SafeObservableCollection <AlbumViewItemBase>();
AlbumViewItem newItem = null;
string lastArtist = "";
string lastArtistTitle = "";
string lastTitle = "";
int lastcdid = 0;
Big3.Hitbase.DataBaseEngine.Condition searchCondition = Big3.Hitbase.DataBaseEngine.Condition.Combine(Condition, ConditionFromTree);
using (DataBaseView view = TrackView.CreateView(DataBase, fc, sfc, 0, searchCondition))
{
// Überall auf die Indizes 1 addieren, da die erste Spalte die TrackID ist.
int colArtistName = fc.IndexOf(Field.ArtistCDName) + 1;
int colArtistSaveAs = fc.IndexOf(Field.ArtistCDSaveAs) + 1;
int colTitle = fc.IndexOf(Field.Title) + 1;
int colCDID = fc.IndexOf(Field.CDID) + 1;
int colFrontCover = fc.IndexOf(Field.CDCoverFront) + 1;
int colCategory = fc.IndexOf(Field.Category) + 1;
int colArchiveNumber = fc.IndexOf(Field.ArchiveNumber) + 1;
int colYearRecorded = fc.IndexOf(Field.YearRecorded) + 1;
int colTrackNumber = fc.IndexOf(Field.TrackNumber) + 1;
int colTrackTitle = fc.IndexOf(Field.TrackTitle) + 1;
int colTrackLength = fc.IndexOf(Field.TrackLength) + 1;
int colTrackRating = fc.IndexOf(Field.TrackRating) + 1;
int colTrackArtist = fc.IndexOf(Field.ArtistTrackName) + 1;
int colTrackComposer = fc.IndexOf(Field.ComposerTrackName) + 1;
int colTrackSoundFile = fc.IndexOf(Field.TrackSoundFile) + 1;
int colTrackID = 0;
object[] values;
while ((values = view.Read()) != null)
{
string artistDisplay = values[colArtistName] is DBNull ? "" : (string)values[colArtistName];
string artist = values[colArtistSaveAs] is DBNull ? "" : (string)values[colArtistSaveAs];
string title = values[colTitle] is DBNull ? "" : (string)values[colTitle];
int cdid = (int)values[colCDID];
if (cdid != lastcdid)
{
if (newItem != null)
{
if (newItem.Artist != lastArtistTitle)
{
AlbumViewTitle albumTitle = new AlbumViewTitle();
albumTitle.Title = newItem.Artist;
items.Add(albumTitle);
lastArtistTitle = newItem.Artist;
}
items.Add(newItem);
}
newItem = new AlbumViewItem();
newItem.ID = cdid;
newItem.Artist = artistDisplay;
newItem.Title = title;
newItem.ImageFilename = values[colFrontCover] is DBNull ? "" : (string)values[colFrontCover];
newItem.Genre = values[colCategory] is DBNull ? "" : (string)values[colCategory];
newItem.ArchiveNumber = values[colArchiveNumber] is DBNull ? "" : (string)values[colArchiveNumber];
int yearRecorded = values[colYearRecorded] is DBNull ? 0 : (int)values[colYearRecorded];
if (yearRecorded > 0)
{
newItem.Year = yearRecorded.ToString();
}
newItem.Tracks = new SafeObservableCollection <Track>();
lastArtist = artist;
lastTitle = title;
}
if (newItem != null)
{
Track track = new Track();
track.TrackNumber = (int)values[colTrackNumber];
track.Title = values[colTrackTitle] is DBNull ? "" : (string)values[colTrackTitle];
track.Length = (int)values[colTrackLength];
track.Rating = values[colTrackRating] is DBNull ? 0 : (int)values[colTrackRating];
track.Artist = values[colTrackArtist] is DBNull ? "" : (string)values[colTrackArtist];
track.Composer = values[colTrackComposer] is DBNull ? "" : (string)values[colTrackComposer];
track.Soundfile = values[colTrackSoundFile] is DBNull ? "" : (string)values[colTrackSoundFile];
track.CDID = cdid;
track.ID = (int)values[colTrackID];
newItem.Tracks.Add(track);
}
//toolStripStatusProgressBar.Value = (int)(100.0 / TrackView.Rows.Count * count);
count++;
lastcdid = cdid;
}
}
if (newItem != null)
{
if (newItem.Artist != lastArtistTitle)
{
AlbumViewTitle albumTitle = new AlbumViewTitle();
albumTitle.Title = newItem.Artist;
items.Add(albumTitle);
}
items.Add(newItem);
}
e.Result = items;
}
