/// <summary>
/// returns true if it could actually find something to display
/// </summary>
/// <returns></returns>
private bool preview()
{
bool ret = false;
disableButtons();
// Create an Image object from the specified file.
try
{
m_wpt = PhotoWaypoints.CurrentWaypoint();
if (m_wpt != null)
{
PhotoDescr photoDescr = PhotoDescr.FromThumbnail(m_wpt.ThumbSource);
photoViewerControl.photoDescr = m_photoDescr = photoDescr;
setPhotoDetail();
if (m_keepInView)
{
PictureManager.This.CameraManager.keepInView(m_wpt.Location);
}
PictureManager.This.CameraManager.MarkLocation(m_wpt.Location, 0);
ret = true;
}
else
{
photoViewerControl.photoDescr = m_photoDescr = null;
}
}
// An invalid image will throw an OutOfMemoryException
// exception
catch (OutOfMemoryException)
{
throw new InvalidOperationException("'" + m_wpt.ThumbSource + "' is not a valid image file.");
}
if (ret)
{
setupButtons();
}
DlgPhotoManager.sync(false);
this.BringToFront();
return(ret);
}
private void deleteButton_Click(object sender, System.EventArgs e)
{
if (m_photoDescr != null && m_photoDescr.imageSourceIsLocal)
{
string imageSource = m_photoDescr.imageSource;
try
{
string msg;
int pos = imageSource.IndexOf("|");
if (pos > 0)
{
// this is a .zip or .gpz file
string zipFileName = imageSource.Substring(0, pos);
string photoFileName = imageSource.Substring(pos + 1);
msg = "Will permanently delete entry '" + photoFileName + "' from the zip archive '" + zipFileName
+ "'.\n\nThe zip archive file will NOT be deleted.\n\nAre you sure?";
}
else
{
// plain file
msg = "Will permanently delete file '" + imageSource + "' from disk.\n\nAre you sure?";
}
string fileToDelete = null;
if (Project.YesNoBox(this, msg))
{
if (m_wpt != null)
{
if (m_wpt.TrackId == -1)
{
WaypointsCache.RemoveWaypointById(m_wpt.Id);
}
PhotoWaypoints.RemoveWaypoint(m_wpt); // from track too, if any
photoViewerControl.photoDescr = null;
fileToDelete = m_photoDescr.deleteFromDisk();
if (preview()) // will find current waypoint, if any, and set m_photoDescr
{
setPhotoDetail();
photoViewerControl.Refresh();
}
else
{
// no image to display, need to wrap up
m_photoDescr = null;
this.Close();
}
PictureManager.This.Refresh();
}
else
{
PhotoWaypoints.RemoveUnrelatedById(m_photoDescr.Id);
fileToDelete = m_photoDescr.deleteFromDisk();
if (PhotoWaypoints.PhotosUnrelated.Count > 0)
{
photoViewerControl.photoDescr = m_photoDescr = (PhotoDescr)PhotoWaypoints.PhotosUnrelated.GetByIndex(0);
setPhotoDetail();
photoViewerControl.Refresh();
this.setupButtons();
this.BringToFront();
}
else
{
photoViewerControl.photoDescr = m_photoDescr = null;
this.Close();
}
}
DlgPhotoManager.sync(true);
if (fileToDelete != null)
{
GC.Collect();
FileInfo fi = new FileInfo(fileToDelete);
fi.Delete();
}
}
}
catch (Exception exc)
{
Project.ErrorBox(this, "Failed to delete " + imageSource + "\n\nException: " + exc.Message);
this.Close();
}
}
}
