/// <summary>
/// Get an Int from the registry
/// </summary>
public static int GetInteger(this RegistryKey registryKey, string subKeyPath, int defaultValue)
{
// Check the arguments for null
if (registryKey == null)
{
// this should not happen
TracePrint.PrintStackTrace(1);
// throw new ArgumentNullException(nameof(registryKey));
return(defaultValue);
}
object value = registryKey.GetValue(subKeyPath);
if (value == null)
{
return(defaultValue);
}
if (value is Int32)
{
return((int)value);
}
if (value is string)
{
return(Int32.Parse((string)value));
}
throw new NotSupportedException(String.Format("Registry key {0}\\{1} has unhandled type {2}.", registryKey.Name, subKeyPath, value.GetType().FullName));
}
/// <summary>
/// Given size units in normal pixels, translate them into device independent pixels (the out parameters)
/// </summary>
/// <param name="widthInPixels"></param>
/// <param name="heightInPixels"></param>
/// <param name="widthInDeviceIndependentPixels"></param>
/// <param name="heightInDeviceIndependentPixels"></param>
public static void TransformPixelsToDeviceIndependentPixels(int widthInPixels,
int heightInPixels,
out double widthInDeviceIndependentPixels,
out double heightInDeviceIndependentPixels)
{
IntPtr hDc = GetDC(IntPtr.Zero);
if (hDc != IntPtr.Zero)
{
int dpiX = GetDeviceCaps(hDc, LOGPIXELSX);
int dpiY = GetDeviceCaps(hDc, LOGPIXELSY);
_ = ReleaseDC(IntPtr.Zero, hDc);
widthInDeviceIndependentPixels = 96 * widthInPixels / (double)dpiX;
heightInDeviceIndependentPixels = 96 * heightInPixels / (double)dpiY;
}
else
{
// This is very unlikely.
// As a workaround, we just return the original pixel size. While this may not be the correct size (depending on the actual dpi),
// it will not crash the program and at least maintains the correct aspect ration
widthInDeviceIndependentPixels = widthInPixels;
heightInDeviceIndependentPixels = heightInPixels;
TracePrint.PrintMessage("In TransformPixelsToDeviceIndependentPixels: Failed to get DC.");
}
}
/// <summary>
/// Get an Int from the registry
/// </summary>
public static int GetInteger(this RegistryKey registryKey, string subKeyPath, int defaultValue)
{
// Check the arguments for null
if (registryKey == null)
{
// this should not happen
TracePrint.PrintStackTrace(1);
// throw new ArgumentNullException(nameof(registryKey));
return(defaultValue);
}
object value = registryKey.GetValue(subKeyPath);
if (value == null)
{
return(defaultValue);
}
if (value is Int32)
{
return((int)value);
}
if (value is string @string)
{
return(Int32.Parse(@string));
}
return(defaultValue);
}
private static void GetAllImageAndVideoFilesInFolderAndSubfolders(string rootFolderPath, List <FileInfo> fileInfoList, int recursionLevel)
{
// Check the arguments for null
if (fileInfoList == null)
{
// this should not happen
TracePrint.PrintStackTrace(1);
// Not show what happens if we return with a null fileInfoList, but its worth a shot
// throw new ArgumentNullException(nameof(control));
return;
}
int nextRecursionLevel = recursionLevel + 1;
if (!Directory.Exists(rootFolderPath))
{
return;
}
DirectoryInfo directoryInfo = new DirectoryInfo(rootFolderPath);
foreach (string extension in new List <string>()
{
Constant.File.JpgFileExtension, Constant.File.AviFileExtension, Constant.File.Mp4FileExtension, Constant.File.ASFFileExtension
})
{
// GetFiles has a 'bug', where it can match an extension even if there are more letters after the extension.
// That is, if we are looking for *.jpg, it will not only return *.jpg files, but files such as *.jpgXXX
fileInfoList.AddRange(directoryInfo.GetFiles("*" + extension));
}
// Recursively descend subfolders
DirectoryInfo dirInfo = new DirectoryInfo(rootFolderPath);
DirectoryInfo[] subDirs = dirInfo.GetDirectories();
foreach (DirectoryInfo subDir in subDirs)
{
// Skip the following folders
if (subDir.Name == Constant.File.BackupFolder || subDir.Name == Constant.File.DeletedFilesFolder || subDir.Name == Constant.File.VideoThumbnailFolderName)
{
continue;
}
GetAllImageAndVideoFilesInFolderAndSubfolders(subDir.FullName, fileInfoList, nextRecursionLevel);
}
if (recursionLevel == 0)
{
// After all recursion is complete, do the following (but only on the initial recursion level)
// Because of that bug, we need to check for, and remove, any files that don't exactly match the desired extension
// At the same time, we also remove MacOSX hidden files, if any
FilesRemoveAllButImagesAndVideos(fileInfoList);
if (fileInfoList.Count != 0)
{
fileInfoList.OrderBy(file => file.FullName).ToList();
}
}
}
// Checks the length of the backup path
public static bool IsBackupPathLengthTooLong(string str)
{
// Check the arguments for null
if (str == null)
{
// this should not happen
TracePrint.PrintStackTrace(1);
return(false);
}
return(str.Length + Constant.File.MaxAdditionalLengthOfBackupFiles > Constant.File.MaxPathLength);
}
/// <summary>
/// Populate folderPaths with all the folders and subfolders (from the root folder) that contains at least one video or image file
/// If prefixPath is provided, it is stripped from the beginning of the matching folder paths, otherwise the full path is returned
/// </summary>
/// <param name="folderRoot"></param>
/// <param name="folderPaths"></param>
public static void GetAllFoldersContainingAnImageOrVideo(string folderRoot, List <string> folderPaths, string prefixPath)
{
// Check the arguments for null
if (folderPaths == null || folderRoot == null)
{
// this should not happen
TracePrint.PrintStackTrace(1);
// throw new ArgumentNullException(nameof(folderPaths));
// Not sure what happens if we have a null folderPaths, but we may as well try it.
return;
}
if (!Directory.Exists(folderRoot))
{
return;
}
// Add a folder only if it contains one of the desired extensions
if (CheckFolderForAtLeastOneImageOrVideoFiles(folderRoot) == true)
{
if (String.IsNullOrEmpty(prefixPath) == false)
{
int index = folderRoot.Length > prefixPath.Length + 1 ? prefixPath.Length + 1 : prefixPath.Length;
folderPaths.Add(folderRoot.Substring(index));
}
else
{
folderPaths.Add(folderRoot);
}
}
DirectoryInfo[] subDirs;
// Recursively descend subfolders, collecting directory info on the way
// Note that while folders without images are also collected, these will eventually be skipped when it is later scanned for images to load
try
{
DirectoryInfo dirInfo = new DirectoryInfo(folderRoot);
subDirs = dirInfo.GetDirectories();
}
catch
{
// It may fail if there is a permissions issue
return;
}
foreach (DirectoryInfo subDir in subDirs)
{
// Skip the following folders
if (subDir.Name == Constant.File.BackupFolder || subDir.Name == Constant.File.DeletedFilesFolder || subDir.Name == Constant.File.VideoThumbnailFolderName)
{
continue;
}
GetAllFoldersContainingAnImageOrVideo(subDir.FullName, folderPaths, prefixPath);
}
}
/// <summary>
/// Returns true only if every character in the string is a letter or a digit
/// </summary>
public static bool IsLetterOrDigit(string str)
{
// Check the arguments for null
if (str == null)
{
// this should not happen
TracePrint.PrintStackTrace(1);
return(false);
}
foreach (char c in str)
{
if (!Char.IsLetterOrDigit(c))
{
return(false);
}
}
return(true);
}
/// <summary>
/// Returns true only if every character in the string is a digit
/// </summary>
public static bool IsDigits(string value)
{
// Check the arguments for null
if (value == null)
{
// this should not happen
TracePrint.PrintStackTrace(1);
// throw new ArgumentNullException(nameof(value));
return(false);
}
foreach (char character in value)
{
if (!Char.IsDigit(character))
{
return(false);
}
}
return(true);
}
public static Dictionary <string, ImageMetadata> LoadMetadata(string filePath)
{
Dictionary <string, ImageMetadata> metadataDictionary = new Dictionary <string, ImageMetadata>();
try
{
foreach (Directory metadataDirectory in ImageMetadataReader.ReadMetadata(filePath))
{
// TraceDebug.PrintMessage(String.Format("metadataDirectory is: {0}", metadataDirectory.Name));
foreach (Tag metadataTag in metadataDirectory.Tags)
{
ImageMetadata metadata = new ImageMetadata(metadataTag.DirectoryName, metadataTag.Name, metadataTag.Description);
// Check if the metadata name is already in the dictionary.
// If so, just skip it as its not clear what else to do with it
// Note that Quicktime mp4s appear to have multiple directories called Quicktime Track Headers.
// Exiftool seems to handle this properly but MetadataDetector generates duplicates.
// So only the first Quicktime track header is added to the dictionary.
if (!metadataDictionary.ContainsKey(metadata.Key))
{
metadataDictionary.Add(metadata.Key, metadata);
}
else
{
TracePrint.PrintMessage(String.Format("ImageMetadata Dictionary: Duplicate metadata key: {0}:{1} (Note that Quicktime may have multiple Track Headers)", metadataDirectory.Name, metadata.Key));
}
}
}
}
catch
{
// Likely a corrupt file, Just return the empty dictionary
metadataDictionary.Clear();
}
return(metadataDictionary);
}
/// <summary>
/// Select the rows with the given IDs, discover its rowIndexes, and then scroll the topmost row into view
/// This method is provided with a list of tuples, each containing
/// - a File ID,
/// - a possible row index into the data table containing that File ID
/// </summary>
public static void SelectAndScrollIntoView(this DataGrid dataGrid, List <Tuple <long, int> > idRowIndexes)
{
// We want to select (highlight) each row in the data table matching those IDs.
// Typically, the file record identified by the ID will be found in the datagrid row specified by RowIndex,
// which will occur *unless* the the user has resorted the datagrid by clicking a column header
// For efficiency, we check each tuple to see if the ID provided matches the ID in the row specified by rowIndex. If so,
// we can quickly highlight those rows. Otherwise we need to search the datagrid for each ID
// Check the arguments for null
if (dataGrid == null || idRowIndexes == null)
{
// this should not happen
TracePrint.PrintStackTrace(1);
// throw new ArgumentNullException(nameof(idRowIndexes) + " or " nameof(dataGrid));
// Not sure what the consequences of this empty return is, but ...
return;
}
// If there are no selections, just unselect everything
if (idRowIndexes.Count.Equals(0))
{
dataGrid.UnselectAll();
return;
}
int topmostRowIndex = int.MaxValue; // Keeps track of the topmost row index, as this is the one we will want to scroll too
DataRowView currentRow; // The current row being examined
List <int> rowIndexesToSelect = new List <int>();
long currentID;
int currentRowIndexThatMayContainID;
foreach (Tuple <long, int> idRowIndex in idRowIndexes)
{
currentID = (int)idRowIndex.Item1;
currentRowIndexThatMayContainID = idRowIndex.Item2;
// Get the row indicated by rowIndex (after first checking that such a row exists)
if (dataGrid.Items.Count < currentRowIndexThatMayContainID)
{
// System.Diagnostics.Debug.Print("row index " + currentRowIndexThatMayContainID + " is not in array sized " + dataGrid.Items.Count);
return;
}
currentRow = dataGrid.Items[currentRowIndexThatMayContainID] as DataRowView;
if ((long)currentRow.Row.ItemArray[0] == currentID)
{
// The ID is in the row indicated by rowIndex. Add that rowIndex as one of the rows we should select
rowIndexesToSelect.Add(currentRowIndexThatMayContainID);
if (topmostRowIndex > currentRowIndexThatMayContainID)
{
topmostRowIndex = currentRowIndexThatMayContainID;
}
}
else
{
// The ID is not in the row indicated by rowIndex. Search the datagrid for that ID, and then add it as one of the rows we should select
bool idFound = false;
int dataGridItemsCount = dataGrid.Items.Count;
for (int index = 0; index < dataGridItemsCount; index++)
{
currentRow = dataGrid.Items[index] as DataRowView;
if ((long)currentRow.Row.ItemArray[0] == currentID)
{
idFound = true;
rowIndexesToSelect.Add(index);
if (topmostRowIndex > index)
{
topmostRowIndex = index;
}
break;
}
}
if (idFound == false)
{
// The id should always be found. But just in case we ignore IDS that aren't found
// System.Diagnostics.Debug.Print("could not find ID: " + currentID + " in array sized " + dataGrid.Items.Count);
}
}
}
// Select the items (which highlights those rows)
bool indexIncreasing = topmostRowIndex > dataGrid.SelectedIndex;
SelectRowByIndexes(dataGrid, rowIndexesToSelect);
// Depending on our selection direction, we scroll to expose the previous or next 2 rows to ensure they are visible beyond the selected row);
int scrollIndex = indexIncreasing ? Math.Min(topmostRowIndex + 3, dataGrid.Items.Count - 1) : Math.Max(topmostRowIndex - 3, 0);
dataGrid.ScrollIntoView(dataGrid.Items[scrollIndex]);
}