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/qt4map.h

@@ -0,0 +1,81 @@
+// Copyright (c) Warwick Allison, 1999.
+// Qt4 conversion copyright (c) Ray Chason, 2012-2014.
+// NetHack may be freely redistributed.  See license for details.
+
+// qt4map.h -- the map window
+
+#ifndef QT4MAP_H
+#define QT4MAP_H
+
+#include "qt4win.h"
+#include "qt4clust.h"
+
+namespace nethack_qt4 {
+
+class NetHackQtClickBuffer;
+
+class NetHackQtMapViewport : public QWidget {
+	Q_OBJECT
+public:
+	NetHackQtMapViewport(NetHackQtClickBuffer& click_sink);
+	~NetHackQtMapViewport(void);
+
+protected:
+	virtual void paintEvent(QPaintEvent* event);
+	bool DrawWalls(QPainter& painter, int x, int y, int w, int h, unsigned ch);
+	virtual QSize sizeHint() const;
+	virtual QSize minimumSizeHint() const;
+	virtual void mousePressEvent(QMouseEvent* event);
+
+private:
+	QFont *rogue_font;
+	unsigned short glyph[ROWNO][COLNO];
+	unsigned short& Glyph(int x, int y) { return glyph[y][x]; }
+	QPoint cursor;
+	QPixmap pet_annotation;
+	NetHackQtClickBuffer& clicksink;
+	Clusterizer change;
+
+	void clickCursor();
+	void Clear();
+	void Display(bool block);
+	void CursorTo(int x,int y);
+	void PrintGlyph(int x,int y,int glyph);
+	void Changed(int x, int y);
+	void updateTiles();
+
+	// NetHackQtMapWindow2 passes through many calls to the viewport
+	friend class NetHackQtMapWindow2;
+};
+
+class NetHackQtMapWindow2 : public QScrollArea, public NetHackQtWindow {
+	Q_OBJECT
+public:
+	NetHackQtMapWindow2(NetHackQtClickBuffer& click_sink);
+	void clearMessages();
+	void putMessage(int attr, const QString& text);
+	void clickCursor();
+	virtual QWidget *Widget();
+
+	virtual void Clear();
+	virtual void Display(bool block);
+	virtual void CursorTo(int x,int y);
+	virtual void PutStr(int attr, const QString& text);
+	virtual void ClipAround(int x,int y);
+	virtual void PrintGlyph(int x,int y,int glyph);
+
+signals:
+	void resized();
+
+private slots:
+	void updateTiles();
+
+private:
+	NetHackQtMapViewport *m_viewport;
+	QRect messages_rect;
+	QString messages;
+};
+
+} // namespace nethack_qt4
+
+#endif