Add Qt4 windowport

Originally by Ray Chason for 3.4.3, based on the Qt windowport by
Warwick Allison. The look and feel is mostly the same.

Some improvements over the Qt 3 interface are:

* Panes are resizable
* Full support for IBMgraphics, and walls and corridors are drawn with
  graphical primitives for a continuous appearance no matter what the font
  says
* Lots of irritating glitches fixed
* Menus support proportional fonts correctly

Adding this because the old Qt windowport cannot be compiled on Qt4,
even with Qt3 compatibility stuff.

TODO:
 - background map glyphs
 - status hilites
 - menucolors

win/Qt4/qt4main.h

@@ -0,0 +1,94 @@
+// Copyright (c) Warwick Allison, 1999.
+// Qt4 conversion copyright (c) Ray Chason, 2012-2014.
+// NetHack may be freely redistributed.  See license for details.
+
+// qt4main.h -- the main window
+
+#ifndef QT4MAIN_H
+#define QT4MAIN_H
+
+#ifdef KDE
+#include <kapp.h>
+#include <ktopwidget.h>
+#else
+#include "qt4kde0.h"
+#endif
+
+namespace nethack_qt4 {
+
+class NetHackQtInvUsageWindow;
+class NetHackQtKeyBuffer;
+class NetHackQtMapWindow2;
+class NetHackQtMessageWindow;
+class NetHackQtStatusWindow;
+class NetHackQtWindow;
+
+// This class is the main widget for NetHack
+//
+// It is a collection of Message, Map, and Status windows.  In the current
+// version of nethack there is only one of each, and this class makes this
+// assumption, not showing itself until all are inserted.
+//
+// This class simply knows how to layout such children sensibly.
+//
+// Since it is only responsible for layout, the class does not
+// note the actual class of the windows.
+//
+
+class NetHackQtMainWindow : public KTopLevelWidget {
+	Q_OBJECT
+public:
+	NetHackQtMainWindow(NetHackQtKeyBuffer&);
+
+	void AddMessageWindow(NetHackQtMessageWindow* window);
+	void AddMapWindow(NetHackQtMapWindow2* window);
+	void AddStatusWindow(NetHackQtStatusWindow* window);
+	void RemoveWindow(NetHackQtWindow* window);
+	void updateInventory();
+
+	void fadeHighlighting();
+
+public slots:
+	void doMenuItem(QAction *);
+	void doQtSettings(bool);
+	void doAbout(bool);
+	//RLC void doGuidebook(bool);
+	void doKeys(const QString&);
+
+protected:
+	virtual void resizeEvent(QResizeEvent*);
+	virtual void keyPressEvent(QKeyEvent*);
+	virtual void keyReleaseEvent(QKeyEvent* event);
+	virtual void closeEvent(QCloseEvent*);
+
+private slots:
+	void layout();
+	void raiseMap();
+	void zoomMap();
+	void raiseMessages();
+	void raiseStatus();
+
+private:
+	void ShowIfReady();
+
+#ifdef KDE
+	KMenuBar* menubar;
+#else
+	QMenuBar* menubar;
+#endif
+	NetHackQtMessageWindow* message;
+	NetHackQtMapWindow2* map;
+	NetHackQtStatusWindow* status;
+	NetHackQtInvUsageWindow* invusage;
+
+	QSplitter *hsplitter;
+	QSplitter *vsplitter;
+
+	NetHackQtKeyBuffer& keysink;
+	QStackedWidget* stack;
+	int dirkey;
+};
+
+} // namespace nethack_qt4
+
+#endif