/// <summary>
/// Removes the thumbnail specified
/// </summary>
/// <param name="thumb">index of the channel being removed</param>
private void RemoveThumbmnnail(FavoriteChannelThumbnail thumb)
{
if (thumb == null)
{
return;
}
panelThumbnails.Visible = false;
int removeAt = panelThumbnails.GetRow(thumb);
panelThumbnails.Controls.Remove(thumb);
//Shift existing controls down
foreach (Control existing in panelThumbnails.Controls)
{
if (panelThumbnails.GetRow(existing) >= removeAt)
{
panelThumbnails.SetRow(existing, panelThumbnails.GetRow(existing) - 1);
}
}
panelThumbnails.RowCount--;
//repaint
panelThumbnails.Visible = true;
panelThumbnails.Invalidate();
}
/// <summary>
/// Inserts a thumbnail control into the list at a given positon
/// </summary>
/// <param name="i">index to insert at</param>
/// <param name="thumb">thumbnail to insert</param>
private void InsertThumbnail(int i, FavoriteChannelThumbnail thumb)
{
//hide control to avoid repainting
panelThumbnails.Visible = false;
//Insert new RowStyles corresponding to new row
RowStyle newRow = new RowStyle();
newRow.SizeType = SizeType.AutoSize;
panelThumbnails.RowStyles.Insert(i, newRow);
panelThumbnails.RowCount++;
//Shift existing controls down
foreach (Control existing in panelThumbnails.Controls)
{
if (panelThumbnails.GetRow(existing) >= i)
{
panelThumbnails.SetRow(existing, panelThumbnails.GetRow(existing) + 1);
}
}
//insert thumbnail in the correct position
panelThumbnails.Controls.Add(thumb, 0, i);
//repaint
panelThumbnails.Visible = true;
panelThumbnails.Invalidate();
}
/// <summary>
/// Called when the user clicks on the "X" button on the favorite. This causes the favorite to be deleted.
/// </summary>
private void Item_DeleteClick(object sender, EventArgs e)
{
FavoriteChannelThumbnail t = sender as FavoriteChannelThumbnail;
if (t == null)
{
return;
}
this.Remove(t.Channel);
}
/// <summary>
/// Called when the user clicks on the snapshot. This causes the favorite to be tuned.
/// </summary>
private void Item_SnapshotClick(object sender, EventArgs e)
{
FavoriteChannelThumbnail t = sender as FavoriteChannelThumbnail;
if (t == null)
{
return;
}
this.Scanning = false;
FireTuneFavoriteChannel(t.Channel);
}
/// <summary>
/// Updates the snapshot for a given channel.
/// Does nothing if the channel does not exist.
/// Does nothing if the snapshot is null.
/// </summary>
/// <param name="channel">channel to update</param>
/// <param name="snapshot">new snapshot to display</param>
public void UpdateSnapshot(Channel channel, Snapshot snapshot)
{
if (snapshot == null)
{
return;
}
FavoriteChannelThumbnail t = GetThumbnailAt(CurrentFavorites.IndexOf(channel));
if (t != null)
{
t.Image = snapshot.DIBBitmap;
}
}
/// <summary>
/// Creates a thumbnail
/// </summary>
/// <param name="channel">channel to bind to</param>
/// <param name="snapshot">snapshot to display. Specify null to try to load from memory/disk</param>
private FavoriteChannelThumbnail CreateThumbnail(Channel channel, Snapshot snapshot)
{
FavoriteChannelThumbnail t = new FavoriteChannelThumbnail();
t.Channel = channel;
if (snapshot != null)
{
t.Image = snapshot.DIBBitmap;
}
else
{
t.LoadThumbnailImage(FavoritesStoreRoot + "\\" + CurrentTVSource.ToString());
}
t.SnapshotClick += new EventHandler(Item_SnapshotClick);
t.DeleteClick += new EventHandler(Item_DeleteClick);
return(t);
}
/// <summary>
/// releases a thumbnail so it can be removed from the Controls collection and actually get disposed
/// </summary>
/// <param name="thumb">thumbnail to release</param>
private void ReleaseThumbnail(FavoriteChannelThumbnail thumb)
{
thumb.SnapshotClick -= new EventHandler(Item_SnapshotClick);
thumb.DeleteClick -= new EventHandler(Item_DeleteClick);
thumb.Dispose();
}
