/// <summary>
/// Adds a new file entry to the list
/// </summary>
/// <param name="filePath">path of the file to add</param>
/// <param name="thumbnailPath">path of the thumbnail file</param>
/// <param name="dimensions">dimensions of the file</param>
public void AddFile(string filePath, string thumbnailPath, string dimensions)
{
string thumb = thumbnailPath.ToLower();
if (!this.IsSupportedFileType(thumbnailPath))
{
thumbnailPath = filePath;
}
string file = filePath.ToLower();
if (this.IsSupportedFileType(file))
{
WallpaperEntry entry = this.GetEntry(filePath);
if (entry == null)
{
entry = new WallpaperEntry(filePath, thumbnailPath, dimensions);
this.map[filePath] = entry;
if (this.sorted)
{
this.AddSortedToList(entry);
}
else
{
this.list.Add(entry);
this.lastInsertIndex = this.list.Count - 1;
}
}
}
}
/// <summary>
/// Handler for delete context menu item
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void FileList_DeleteFile(object sender, RoutedEventArgs args)
{
WallpaperEntry item = c_filelist.SelectedItem as WallpaperEntry;
if (c_filelist.SelectedItem == null)
{
return;
}
this.activeList.RemoveFile(item.FilePath, true);
if (this.activeList.Count > 0)
{
c_imagenext.IsEnabled = true;
}
else
{
c_imagenext.IsEnabled = false;
}
try
{
this.activeList.SaveToFile();
}
catch (Exception ex)
{
ErrorLog.Log("Failed to the save the list file, it will continue to be updated in memory", ex);
}
}
/// <summary>
/// Gets the path of a local copy of the file.
/// If the file is online, it downloads to a cache and returns path of the local copy
/// </summary>
/// <param name="entry">entry of the file to lookup</param>
/// <param name="isThumbnail">whether this is a thumbnail image</param>
/// <returns>Path of the local copy</returns>
/// <exception cref="Exception">Can throw exception</exception>
private string GetLocalCopyOfImage(WallpaperEntry entry, bool isThumbnail)
{
if (isThumbnail && Settings.Instance.HighResolutionThumbs)
{
isThumbnail = false;
}
return(GetLocalCopyOfImage(isThumbnail ? entry.ThumbnailPath : entry.FilePath, isThumbnail));
}
/// <summary>
/// Look for an entry based on the file path
/// </summary>
/// <param name="file">path of the file to search</param>
/// <returns></returns>
public WallpaperEntry GetEntry(string file)
{
WallpaperEntry entry = null;
if (this.map.TryGetValue(file, out entry))
{
return(entry);
}
return(null);
}
/// <summary>
/// Handler for set presentation button
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void PresentationSet_Click(object sender, RoutedEventArgs args)
{
if (Settings.Instance.InPresentationMode)
{
return;
}
WallpaperEntry item = c_filelist.SelectedItem as WallpaperEntry;
if (item != null)
{
Settings.Instance.PresentationImage = item.FilePath;
this.UpdatePresentationMode(false);
}
}
/// <summary>
/// Removes a file entry from the list
/// </summary>
/// <param name="filePath">path of the file to remove</param>
/// <param name="delete">indicates whether the file should be deleted as well</param>
public void RemoveFile(string filePath, bool delete)
{
WallpaperEntry entry = null;
if (this.map.TryGetValue(filePath, out entry))
{
this.map.Remove(filePath);
this.list.Remove(entry);
this.lastInsertIndex = -1;
if (delete && File.Exists(filePath))
{
FileSystem.DeleteFile(filePath, UIOption.AllDialogs, RecycleOption.SendToRecycleBin, UICancelOption.DoNothing);
}
}
}
/// <summary>
/// Handler for open context menu item
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void FileList_OpenFile(object sender, RoutedEventArgs args)
{
if (c_filelist.SelectedItem == null)
{
return;
}
try
{
WallpaperEntry item = c_filelist.SelectedItem as WallpaperEntry;
Process.Start("explorer.exe", item.FilePath);
}
catch (Exception e)
{
ErrorLog.Log("Open file failed.", e);
}
}
/// <summary>
/// Handler for copy path context menu item
/// </summary>
/// <param name="sender"></param>
/// <param name="args"></param>
private void FileList_CopyPath(object sender, RoutedEventArgs args)
{
if (c_filelist.SelectedItem == null)
{
return;
}
try
{
WallpaperEntry item = c_filelist.SelectedItem as WallpaperEntry;
System.Windows.Clipboard.SetText(item.FilePath);
}
catch (Exception e)
{
ErrorLog.Log("Copy to clipboard failed.", e);
}
}
/// <summary>
/// Set the provided image as the background
/// </summary>
/// <param name="entry">the image entry</param>
private void SetBackgroundImage(WallpaperEntry entry)
{
try
{
// try to download image to cache
string localFile = this.GetLocalCopyOfImage(entry, false);
if (localFile == null)
{
throw new Exception("Could not get local copy of the image");
}
// set the new file as the desktop wallpaper
BackgroundSetter.SetBackgroundImage(localFile, Settings.Instance.DisplayMode, Settings.Instance.GetBackgroundColor());
}
catch (Exception e)
{
throw new Exception("Setting image did not complete fully", e);
}
Settings.Instance.SelectedImage = entry.FilePath;
this.trayIcon.SetToolText(entry.FilePath);
}
/// <summary>
/// Set the current selection as the background image
/// </summary>
public void SetCurrentImageAsBackground()
{
// re-entrant protection
if (this.BeginTransaction())
{
return;
}
WallpaperEntry entry = c_filelist.SelectedItem as WallpaperEntry;
// try to set the background
try
{
this.SetBackgroundImage(entry);
}
catch (Exception e)
{
ErrorLog.Log("Could not set the current image as the background, please choose a different image.", e);
}
this.EndTransaction();
}
/// <summary>
/// Add an entry to the list in a sorted manner
/// </summary>
/// <param name="newEntry">the entry to add</param>
private void AddSortedToList(WallpaperEntry newEntry)
{
if (this.lastInsertIndex >= this.list.Count)
{
this.lastInsertIndex = -1;
}
if (this.lastInsertIndex == -1)
{
foreach (WallpaperEntry entry in this.list)
{
if (entry.FilePath.CompareTo(newEntry.FilePath) > 0)
{
int index = this.list.IndexOf(entry);
this.list.Insert(index, newEntry);
this.lastInsertIndex = index;
return;
}
}
this.list.Add(newEntry);
this.lastInsertIndex = this.list.Count - 1;
return;
}
else
{
int currentIndex = this.lastInsertIndex;
WallpaperEntry lastAddedItem = this.list[this.lastInsertIndex];
if (lastAddedItem.FilePath.CompareTo(newEntry.FilePath) > 0)
{
//go down in list
currentIndex--;
while (currentIndex > 0)
{
WallpaperEntry current = this.list[currentIndex];
if (current.FilePath.CompareTo(newEntry.FilePath) <= 0)
{
this.list.Insert(currentIndex + 1, newEntry);
this.lastInsertIndex = currentIndex + 1;
return;
}
currentIndex--;
}
this.list.Insert(0, newEntry);
this.lastInsertIndex = 0;
return;
}
else
{
//go up in list
currentIndex++;
while (currentIndex < this.list.Count)
{
WallpaperEntry current = this.list[currentIndex];
if (current.FilePath.CompareTo(newEntry.FilePath) > 0)
{
this.list.Insert(currentIndex, newEntry);
this.lastInsertIndex = currentIndex;
return;
}
currentIndex++;
}
this.list.Add(newEntry);
this.lastInsertIndex = this.list.Count - 1;
return;
}
}
}
/// <summary>
/// Load the list from file
/// </summary>
/// <exception cref="Exception">Can throw exception</exception>
public void LoadFromFile()
{
XmlTextReader reader = null;
this.RemoveAll();
try
{
//the list file doesn't exist, this might be the first time the application ran
if (!File.Exists(this.path))
{
this.map.Clear();
this.list.Clear();
return;
}
reader = new XmlTextReader(this.path);
reader.WhitespaceHandling = WhitespaceHandling.None;
reader.MoveToContent();
if ((reader.NodeType == XmlNodeType.Element) && (reader.Name == "List"))
{
//read to the first element
if (reader.Read())
{
while (true)
{
if ((reader.NodeType == XmlNodeType.EndElement) && (reader.Name == "List"))
{
break;
}
string filePath = reader.ReadElementString("FilePath");
if (!string.IsNullOrEmpty(filePath))
{
string thumbnailPath = reader.ReadElementString("ThumbnailPath");
if (string.IsNullOrEmpty(thumbnailPath))
{
thumbnailPath = filePath;
}
string dimensions = reader.ReadElementString("Dimensions");
WallpaperEntry entry = new WallpaperEntry(filePath, thumbnailPath, dimensions);
this.map[filePath] = entry;
this.list.Add(entry);
}
}
}
else
{
//list is empty. Nothing to do
}
}
else
{
throw new Exception("Invalid starting token");
}
}
finally
{
if (reader != null)
{
reader.Close();
}
}
}
/// <summary>
/// Look for the previous valid image
/// </summary>
/// <param name="setImage">whether to set the previous valid image as the background</param>
public async void GotoPreviousImage(bool setImage)
{
// re-entrant protection
if (this.BeginTransaction())
{
return;
}
// if the image also needs to be set then show balloon tooltip as it can be a lengthy process
if (setImage)
{
this.trayIcon.SetLoadingText();
}
bool listUpdated = false;
WallpaperEntry newEntry = null;
c_filelist.SelectedIndex = -1;
// we will keep looping till we find a valid image
while (true)
{
await Task.Delay(1);
// get the index of the previous image
if (this.imageStack.Count == 0)
{
newEntry = null;
}
else
{
this.imageStack.Pop();
if (this.imageStack.Count > 0)
{
newEntry = this.imageStack.First();
}
}
if (this.imageStack.Count > 1)
{
c_imageprevious.IsEnabled = true;
}
else
{
c_imageprevious.IsEnabled = false;
}
// if no previous entry, break the loop
if (newEntry == null)
{
break;
}
// try to load the thumbnail
try
{
string filePath = this.GetLocalCopyOfImage(newEntry, true);
BitmapDecoder uriBitmap = BitmapDecoder.Create(new Uri(filePath), BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
}
catch (Exception)
{
// in case of an exception remove the entry from the list
this.activeList.RemoveFile(newEntry.FilePath, true);
listUpdated = true;
// try a different image
continue;
}
if (setImage)
{
// try to set the background
try
{
this.SetBackgroundImage(newEntry);
}
catch (Exception)
{
// in case of an exception remove the entry from the list
this.activeList.RemoveFile(newEntry.FilePath, true);
listUpdated = true;
// try a different image
continue;
}
}
// if the current selection succeeded to load, end the loop
break;
}
if (listUpdated)
{
if (this.activeList.Count > 0)
{
c_imagenext.IsEnabled = true;
}
else
{
c_imagenext.IsEnabled = false;
}
try
{
this.activeList.SaveToFile();
}
catch (Exception)
{
// nothing to do here
}
}
this.EndTransaction();
// set the appropriate image as current
if (newEntry == null)
{
c_filelist.SelectedIndex = -1;
}
else
{
c_filelist.SelectedItem = newEntry;
}
}
/// <summary>
/// Constructor for the main window
/// </summary>
public MainWindow()
{
// check for an update
GenericUpdater.Updater.DoUpdate("WallpaperManager", MainWindow.Version, "WallpaperManager_Version.xml", "WallpaperManager.msi", new GenericUpdater.Updater.UpdateFiredDelegate(UpdateFired));
// load the settings
Settings settings = Settings.Instance;
InitializeComponent();
// hide the settings panel
c_settings.ShowPanel(false);
// setup the tray icon
this.trayIcon = new TrayIcon(this);
this.imageStack = new Stack <WallpaperEntry>();
c_imagenext.IsEnabled = false;
c_imageprevious.IsEnabled = false;
c_imageset.IsEnabled = false;
// setup the file list
c_tabs.SelectedIndex = Settings.Instance.FileListIndex;
// start the auto change time if required
this.autoChangeTimer = new Timer();
SetupAutoChangeTimer();
// show the tray icon
this.trayIcon.UpdateTrayIcon(true);
// hide the main window if required
this.trayIcon.UpdateMainWindow(!Settings.Instance.StartMinimized);
// setup the presentation mode
this.UpdatePresentationMode(Settings.Instance.InPresentationMode);
// select the appropriate image
if (Settings.Instance.InPresentationMode)
{
this.trayIcon.SetToolText(Settings.Instance.PresentationImage);
WallpaperEntry entry = this.activeList.GetEntry(Settings.Instance.SelectedImage);
if (entry != null)
{
c_filelist.SelectedItem = entry;
}
}
else
{
if (Settings.Instance.ChangeAtStartup)
{
this.GotoNextImage(true);
}
else
{
this.trayIcon.SetToolText(Settings.Instance.SelectedImage);
WallpaperEntry entry = this.activeList.GetEntry(Settings.Instance.SelectedImage);
if (entry != null)
{
c_filelist.SelectedItem = entry;
}
}
}
}
/// <summary>
/// Look for the next valid image
/// </summary>
/// <param name="setImage">whether to set the next valid image as the background</param>
/// <param name="startIndex">the index to start the scan from, if this is null use the current index</param>
public async void GotoNextImage(bool setImage, int?startIndex = null)
{
// re-entrant protection
if (this.BeginTransaction())
{
return;
}
// if the image also needs to be set then show balloon tooltip as it can be a lengthy process
if (setImage)
{
this.trayIcon.SetLoadingText();
}
bool listUpdated = false;
int currentIndex = (startIndex.HasValue) ? startIndex.Value : c_filelist.SelectedIndex;
c_filelist.SelectedIndex = -1;
int newIndex = -1;
// we will keep looping till we find a valid image
while (true)
{
await Task.Delay(1);
// get the index of the next image
if (this.activeList.Count == 0)
{
newIndex = -1;
break;
}
else if (Settings.Instance.ChangeRandomly)
{
Random rand = new Random();
while (true)
{
int index = rand.Next(this.activeList.Count);
if (index != currentIndex)
{
newIndex = index;
break;
}
}
}
else
{
if (currentIndex == -1)
{
newIndex = 0;
}
else if (currentIndex >= (this.activeList.Count - 1))
{
newIndex = 0;
}
else
{
newIndex = currentIndex + 1;
}
}
// get the entry corresponding to the index
WallpaperEntry newEntry = this.activeList.List[newIndex];
// try to load the thumbnail
try
{
string filePath = this.GetLocalCopyOfImage(newEntry, true);
BitmapDecoder uriBitmap = BitmapDecoder.Create(new Uri(filePath), BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
}
catch (Exception)
{
// in case of an exception remove the entry from the list
this.activeList.RemoveFile(newEntry.FilePath, true);
listUpdated = true;
// try a different image
continue;
}
if (setImage)
{
// try to set the background
try
{
this.SetBackgroundImage(newEntry);
}
catch (Exception)
{
// in case of an exception remove the entry from the list
this.activeList.RemoveFile(newEntry.FilePath, true);
listUpdated = true;
// try a different image
continue;
}
}
// if the current selection succeeded to load, end the loop
break;
}
if (listUpdated)
{
if (this.activeList.Count > 0)
{
c_imagenext.IsEnabled = true;
}
else
{
c_imagenext.IsEnabled = false;
}
try
{
this.activeList.SaveToFile();
}
catch (Exception)
{
// nothing to do here
}
}
this.EndTransaction();
// set the appropriate image as current
c_filelist.SelectedIndex = newIndex;
}
/// <summary>
/// Set the UI properties based on the current image
/// </summary>
public async void GotoCurrentImage()
{
WallpaperEntry currentItem = c_filelist.SelectedItem as WallpaperEntry;
if (currentItem == null)
{
// if no current entry found, clear out the UI
c_imageset.IsEnabled = false;
c_previewimage.Source = null;
c_imageresolution.Text = string.Empty;
c_imageformat.Text = string.Empty;
c_imagefilesize.Text = string.Empty;
if (this.imageStack.Count > 1)
{
c_imageprevious.IsEnabled = true;
}
else
{
c_imageprevious.IsEnabled = false;
}
c_filelist.ScrollIntoView(c_filelist.SelectedItem);
}
else
{
// try setting the UI properties based on current selection
if (this.BeginTransaction())
{
return;
}
c_imageset.IsEnabled = true;
try
{
// download the file to the cache if required
string filePath = this.GetLocalCopyOfImage(currentItem, true);
// load the image in memory
BitmapDecoder uriBitmap = BitmapDecoder.Create(new Uri(filePath), BitmapCreateOptions.None, BitmapCacheOption.OnLoad);
// set the image in UI
c_previewimage.Source = uriBitmap.Frames[0];
// update the image info
c_imageformat.Text = uriBitmap.CodecInfo.FriendlyName;
if (String.IsNullOrEmpty(currentItem.Dimensions))
{
currentItem.Dimensions = uriBitmap.Frames[0].PixelWidth.ToString() + "x" + uriBitmap.Frames[0].PixelHeight.ToString();
}
c_imageresolution.Text = currentItem.Dimensions;
FileInfo info = new FileInfo(filePath);
c_imagefilesize.Text = info.Length.ToString() + " bytes";
// push the current image in the stack
if ((this.imageStack.Count == 0) || (currentItem != this.imageStack.First()))
{
this.imageStack.Push(currentItem);
}
// enable the 'previous' button if there is something in the stack
if (this.imageStack.Count > 1)
{
c_imageprevious.IsEnabled = true;
}
else
{
c_imageprevious.IsEnabled = false;
}
// scroll the selection into view
c_filelist.ScrollIntoView(c_filelist.SelectedItem);
this.EndTransaction();
// completed processed current selection
return;
}
catch (Exception)
{
// nothing to do here
}
// we should come here only if something went wrong in processing current selection
// in that case store the current index and eset the position
int currentIndex = c_filelist.SelectedIndex;
c_filelist.SelectedIndex = -1;
// remove the bad entry from the list
this.activeList.RemoveFile(currentItem.FilePath, true);
if (this.activeList.Count > 0)
{
c_imagenext.IsEnabled = true;
}
else
{
c_imagenext.IsEnabled = false;
}
try
{
this.activeList.SaveToFile();
}
catch (Exception)
{
// nothing to do here
}
this.EndTransaction();
// now look for the next best alternative
await Task.Delay(1);
this.GotoNextImage(false, currentIndex - 1);
}
}
