support rotate patch for SLiM DisplayManeger

rotate.patch

diff -Nur slim-1.3.6.orig/cfg.cpp slim-1.3.6/cfg.cpp
--- slim-1.3.6.orig/cfg.cpp	2014-02-02 15:13:01.434729372 +0900
+++ slim-1.3.6/cfg.cpp	2014-02-02 15:11:59.447111335 +0900
@@ -32,6 +32,7 @@
 	options.insert(option("default_path","/bin:/usr/bin:/usr/local/bin"));
 	options.insert(option("default_xserver","/usr/bin/X"));
 	options.insert(option("xserver_arguments",""));
+	options.insert(option("xrotate",""));
 	options.insert(option("numlock",""));
 	options.insert(option("daemon",""));
 	options.insert(option("xauth_path","/usr/bin/xauth"));
diff -Nur slim-1.3.6.orig/panel.cpp slim-1.3.6/panel.cpp
--- slim-1.3.6.orig/panel.cpp	2014-02-02 15:13:01.430729332 +0900
+++ slim-1.3.6/panel.cpp	2014-02-02 15:13:25.661970887 +0900
@@ -18,12 +18,26 @@
 
 Panel::Panel(Display* dpy, int scr, Window root, Cfg* config,
 			 const string& themedir, PanelType panel_mode) {
+    XRRScreenConfiguration *sc;
+    SizeID size_index;
+    Rotation rotation;
 	/* Set display */
 	Dpy = dpy;
 	Scr = scr;
 	Root = root;
 	cfg = config;
 	mode = panel_mode;
+    sc = XRRGetScreenInfo( Dpy, Root );
+    size_index = XRRConfigCurrentConfiguration( sc, &rotation );
+
+    if (cfg->getOption("xrotate") == "")
+        XRRSetScreenConfig( Dpy, sc, Root, size_index, rotation, CurrentTime );
+    else if (cfg->getOption("xrotate") == "90")
+        XRRSetScreenConfig( Dpy, sc, Root, size_index, RR_Rotate_90, CurrentTime );
+    else if (cfg->getOption("xrotate") == "180")
+        XRRSetScreenConfig( Dpy, sc, Root, size_index, RR_Rotate_180, CurrentTime );
+    else if (cfg->getOption("xrotate") == "270")
+        XRRSetScreenConfig( Dpy, sc, Root, size_index, RR_Rotate_270, CurrentTime );
 
 	session_name = "";
     session_exec = "";