Briefly show folder name when jumped

src/JPEGView/FileList.cpp

@@ -585,6 +585,28 @@ LPCTSTR CFileList::CurrentDirectory() const {
 	}
 }
 
+CString CFileList::CurrentDirectoryName() const {
+	if (m_sDirectory.GetLength() > 0) {
+		int pos = m_sDirectory.ReverseFind('\\');
+		if (pos >= 0)
+		{
+			int cnt = m_sDirectory.GetLength() - pos - 1;
+			if (cnt > 0)
+				return m_sDirectory.Right(cnt);
+		}
+	}
+	return m_sDirectory;
+}
+
+CString CFileList::CurrentDirectoryNameShort() const {
+	CString name = CurrentDirectoryName();
+	int len = name.GetLength();
+	if (len <= 44)
+		return name;
+
+	return name.Left(10) + "..." + name.Right(10);
+}
+
 int CFileList::CurrentIndex() const {
 	int i = 0;
 	std::list<CFileDesc>::const_iterator iter;

src/JPEGView/FileList.h

@@ -98,6 +98,10 @@ class CFileList
 	LPCTSTR CurrentFileTitle() const;
 	// Current directory without file name, NULL if none
 	LPCTSTR CurrentDirectory() const;
+	// Current directory's base name
+	CString CurrentDirectoryName() const;
+	// Current directory's base name shortened if too long
+	CString CurrentDirectoryNameShort() const;
 	// Modification time of current file
 	const FILETIME* CurrentModificationTime() const;
 	// Get the n-next file, does not change the internal state

src/JPEGView/MainDlg.cpp

@@ -3187,11 +3187,19 @@ void CMainDlg::GotoImage(EImagePosition ePos, int nFlags) {
 		case POS_Next_Folder:
 		{
  			m_pFileList = m_pFileList->NextFolder();
+			if (m_pFileList)
+			{
+				SetToast("Jumped > " + m_pFileList->CurrentDirectoryNameShort());
+			}
 			break;
 		}
 		case POS_Previous_Folder:
 		{
 			m_pFileList = m_pFileList->PrevFolder();
+			if (m_pFileList)
+			{
+				SetToast("Jumped < " + m_pFileList->CurrentDirectoryNameShort());
+			}
 			break;
 		}
 	}