Use forward declarations to avoid unneeded dependencies on header files

Author: Simsys

src/qhexedit.cpp

@@ -16,15 +16,18 @@
 * License along with this library; if not, see
 * https://www.gnu.org/licenses/
 */
+#include <algorithm>
+
 #include <QApplication>
 #include <QClipboard>
 #include <QKeyEvent>
 #include <QPainter>
 #include <QScrollBar>
 
+#include "chunks.h"
+#include "commands.h"
+#include "color_manager.h"
 #include "qhexedit.h"
-#include <algorithm>
-
 
 // ********************************************************************** Constructor, destructor
 

src/qhexedit.h

@@ -20,12 +20,14 @@
 #define QHEXEDIT_H
 
 #include <QAbstractScrollArea>
-#include <QPen>
+#include <QBuffer>
 #include <QBrush>
+#include <QPen>
+#include <QTimer>
 
-#include "chunks.h"
-#include "commands.h"
-#include "color_manager.h"
+class Chunks;
+class UndoStack;
+class ColorManager;
 
 #ifdef QHEXEDIT_EXPORTS
 #define QHEXEDIT_API Q_DECL_EXPORT