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/qt4rip.cpp

@@ -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.
+
+// qt4rip.cpp -- tombstone window
+
+#include "hack.h"
+#undef Invisible
+#undef Warning
+#undef index
+#undef msleep
+#undef rindex
+#undef wizard
+#undef yn
+#undef min
+#undef max
+
+#include <QtGui/QtGui>
+#if QT_VERSION >= 0x050000
+#include <QtWidgets/QtWidgets>
+#endif
+#include "qt4rip.h"
+#include "qt4bind.h"
+#include "qt4str.h"
+
+namespace nethack_qt4 {
+
+QPixmap* NetHackQtRIP::pixmap=0;
+
+// Debian uses a separate PIXMAPDIR
+#ifndef PIXMAPDIR
+# ifdef HACKDIR
+#  define PIXMAPDIR HACKDIR
+# else
+#  define PIXMAPDIR "."
+# endif
+#endif
+
+static void
+tryload(QPixmap& pm, const char* fn)
+{
+    if (!pm.load(fn)) {
+	QString msg;
+	msg.sprintf("Cannot load \"%s\"", fn);
+	QMessageBox::warning(NetHackQtBind::mainWidget(), "IO Error", msg);
+    }
+}
+
+NetHackQtRIP::NetHackQtRIP(QWidget* parent) :
+    QWidget(parent)
+{
+    if (!pixmap) {
+	pixmap=new QPixmap;
+	tryload(*pixmap, PIXMAPDIR "/rip.xpm");
+    }
+    riplines=0;
+    resize(pixmap->width(),pixmap->height());
+    setFont(QFont("times",12)); // XXX may need to be configurable
+}
+
+void NetHackQtRIP::setLines(char** l, int n)
+{
+    line=l;
+    riplines=n;
+}
+
+QSize NetHackQtRIP::sizeHint() const
+{
+    return pixmap->size();
+}
+
+void NetHackQtRIP::paintEvent(QPaintEvent* event)
+{
+    if ( riplines ) {
+	int pix_x=(width()-pixmap->width())/2;
+	int pix_y=(height()-pixmap->height())/2;
+
+	// XXX positions based on RIP image
+	int rip_text_x=pix_x+156;
+	int rip_text_y=pix_y+67;
+	int rip_text_h=94/riplines;
+
+	QPainter painter;
+	painter.begin(this);
+	painter.drawPixmap(pix_x,pix_y,*pixmap);
+	for (int i=0; i<riplines; i++) {
+	    painter.drawText(rip_text_x-i/2,rip_text_y+i*rip_text_h,
+		1,1,Qt::TextDontClip|Qt::AlignHCenter,line[i]);
+	}
+	painter.end();
+    }
+}
+
+} // namespace nethack_qt4