void UpdateControlForContact(bool isNewContact)
{
Contact contact = Contact;
if (contact == null)
{
// Explicitly setting to empty/null ensures the bound XAML is
// correctly updated.
m_contactDisplayNameInitials = "";
m_contactImageSource = null;
UpdateIfReady();
return;
}
// It's possible for a second update to occur before the first finished loading
// a profile picture (regardless of second having a picture or not).
// Cancellation of any previously-activated tasks will mitigate race conditions.
if (m_profilePictureReadAsync != null)
{
m_profilePictureReadAsync.Cancel();
}
m_contactDisplayNameInitials = InitialsGenerator.InitialsFromContactObject(contact);
// Order of preference (but all work): Large, Small, Source, Thumbnail
IRandomAccessStreamReference thumbStreamReference = null;
if (PreferSmallImage && contact.SmallDisplayPicture != null)
{
thumbStreamReference = contact.SmallDisplayPicture;
}
else
{
if (contact.LargeDisplayPicture != null)
{
thumbStreamReference = contact.LargeDisplayPicture;
}
else if (contact.SmallDisplayPicture != null)
{
thumbStreamReference = contact.SmallDisplayPicture;
}
else if (contact.SourceDisplayPicture != null)
{
thumbStreamReference = contact.SourceDisplayPicture;
}
else if (contact.Thumbnail != null)
{
thumbStreamReference = contact.Thumbnail;
}
}
// If we have profile picture data available per the above, async load the picture from the platform.
if (thumbStreamReference != null)
{
if (isNewContact)
{
// Prevent the case where context of a contact changes, but we show an old person while the new one is loaded.
m_contactImageSource = null;
}
// The dispatcher is not available in design mode, so when in design mode bypass the call to LoadImageAsync.
if (!SharedHelpers.IsInDesignMode())
{
// Contact is not yet supported
throw new NotSupportedException("Contact is not yet supported");
//LoadImageAsync(
// thumbStreamReference,
// [strongThis](BitmapImage profileBitmap)
//{
// profileBitmap.DecodePixelType(DecodePixelType.Logical);
// // We want to constrain the shorter side to the same dimension as the control, allowing the decoder to
// // choose the other dimension without distorting the image.
// if (profileBitmap.PixelHeight() < profileBitmap.PixelWidth())
// {
// profileBitmap.DecodePixelHeight((int)(strongThis.Height()));
// }
// else
// {
// profileBitmap.DecodePixelWidth((int)(strongThis.Width()));
// }
// strongThis.m_contactImageSource = ImageSource(profileBitmap));
// strongThis.UpdateIfReady();
//});
}
}
else
{
// Else clause indicates that (Contact.Thumbnail == null).
m_contactImageSource = null;
}
UpdateIfReady();
}