Merge pull request #1487 from hurikhan/x11-window-management

X11 window management

3 files changed, 476 insertions, 49 deletions

diff --git a/platform/x11/detect.py b/platform/x11/detect.py
index fb5cdb5089..2519dd6fdf 100644
--- a/platform/x11/detect.py
+++ b/platform/x11/detect.py
@@ -38,6 +38,11 @@ def can_build():
 	if (x11_error):
 		print("xcursor not found.. x11 disabled.")
 		return False
+	
+	x11_error=os.system("pkg-config xinerama --modversion > /dev/null ")
+	if (x11_error):
+		print("xinerama not found.. x11 disabled.")
+		return False
 
 	
 	return True # X11 enabled
@@ -48,6 +53,7 @@ def get_opts():
 	('use_llvm','Use llvm compiler','no'),
 	('use_sanitizer','Use llvm compiler sanitize address','no'),
 	('pulseaudio','Detect & Use pulseaudio','yes'),
+	('new_wm_api', 'Use experimental window management API','no'),
 	]
   
 def get_flags():
@@ -147,3 +153,7 @@ def configure(env):
 	env.Append( BUILDERS = { 'GLSL120GLES' : env.Builder(action = methods.build_gles2_headers, suffix = 'glsl.h',src_suffix = '.glsl') } )
 	#env.Append( BUILDERS = { 'HLSL9' : env.Builder(action = methods.build_hlsl_dx9_headers, suffix = 'hlsl.h',src_suffix = '.hlsl') } )
 
+	if(env["new_wm_api"]=="yes"):
+		env.Append(CPPFLAGS=['-DNEW_WM_API'])
+		env.ParseConfig('pkg-config xinerama --cflags --libs')
+
diff --git a/platform/x11/os_x11.cpp b/platform/x11/os_x11.cpp
index ac1818d200..8196281732 100644
--- a/platform/x11/os_x11.cpp
+++ b/platform/x11/os_x11.cpp
@@ -36,6 +36,17 @@
 #include "servers/physics/physics_server_sw.h"
 
 #include "X11/Xutil.h"
+#ifdef NEW_WM_API
+#include "X11/Xatom.h"
+#include "X11/extensions/Xinerama.h"
+// ICCCM
+#define WM_NormalState		1L	// window normal state
+#define WM_IconicState		3L	// window minimized
+// EWMH
+#define _NET_WM_STATE_REMOVE	0L	// remove/unset property
+#define _NET_WM_STATE_ADD	1L	// add/set property
+#define _NET_WM_STATE_TOGGLE	2L	// toggle property
+#endif
 #include "main/main.h"
 
 
@@ -56,7 +67,7 @@
 
 
 #include <X11/Xatom.h>
-#include "os/pc_joystick_map.h"
+//#include "os/pc_joystick_map.h"
 
 #undef CursorShape
 
@@ -117,10 +128,10 @@ void OS_X11::initialize(const VideoMode& p_desired,int p_video_driver,int p_audi
 
 	if (xim == NULL) {
 		WARN_PRINT("XOpenIM failed");
-		xim_style=NULL;
+		xim_style=0L;
 	} else {
 		::XIMStyles *xim_styles=NULL;
-		xim_style=0;
+		xim_style=0L;
 		char *imvalret=NULL;
 		imvalret = XGetIMValues(xim, XNQueryInputStyle, &xim_styles, NULL);
 		if (imvalret != NULL || xim_styles == NULL) {
@@ -128,7 +139,7 @@ void OS_X11::initialize(const VideoMode& p_desired,int p_video_driver,int p_audi
 		}
 		
 		if (xim_styles) {
-			xim_style = 0;
+			xim_style = 0L;
 			for (int i=0;i<xim_styles->count_styles;i++) {
 				
 				if (xim_styles->supported_styles[i] ==
@@ -162,14 +173,11 @@ void OS_X11::initialize(const VideoMode& p_desired,int p_video_driver,int p_audi
 	// maybe contextgl wants to be in charge of creating the window
 	//print_line("def videomode "+itos(current_videomode.width)+","+itos(current_videomode.height));
 #if defined(OPENGL_ENABLED) || defined(LEGACYGL_ENABLED)
+
 	context_gl = memnew( ContextGL_X11( x11_display, x11_window,current_videomode, false ) );
 	context_gl->initialize();
 
-	if (true) {
-		rasterizer = memnew( RasterizerGLES2 );
-	} else {
-		//rasterizer = memnew( RasterizerGLES1 );
-	};
+	rasterizer = memnew( RasterizerGLES2 );
 
 #endif
 	visual_server = memnew( VisualServerRaster(rasterizer) );
@@ -179,9 +187,10 @@ void OS_X11::initialize(const VideoMode& p_desired,int p_video_driver,int p_audi
 		visual_server =memnew(VisualServerWrapMT(visual_server,get_render_thread_mode()==RENDER_SEPARATE_THREAD));
 	}
 
+#ifndef NEW_WM_API
 	// borderless fullscreen window mode
 	if (current_videomode.fullscreen) {
-		// needed for lxde/openbox, possibly others
+	// needed for lxde/openbox, possibly others
 		Hints hints;
 		Atom property;
 		hints.flags = 2;
@@ -210,7 +219,7 @@ void OS_X11::initialize(const VideoMode& p_desired,int p_video_driver,int p_audi
 		XSendEvent(x11_display, DefaultRootWindow(x11_display), False, SubstructureNotifyMask, &xev);
 	}
 
-	// disable resizeable window
+	// disable resizable window
 	if (!current_videomode.resizable) {
 		XSizeHints *xsh;
 		xsh = XAllocSizeHints();
@@ -226,7 +235,25 @@ void OS_X11::initialize(const VideoMode& p_desired,int p_video_driver,int p_audi
 		xsh->min_height = xwa.height;
 		xsh->max_height = xwa.height;
 		XSetWMNormalHints(x11_display, x11_window, xsh);
+		XFree(xsh);
 	}
+#else
+	capture_idle = 0;
+	minimized = false;
+	maximized = false;
+
+	if (current_videomode.fullscreen) {
+		//set_wm_border(false);
+		set_wm_fullscreen(true);
+	}
+	if (!current_videomode.resizable) {
+		int screen = get_screen();
+		Size2i screen_size = get_screen_size(screen);
+		set_window_size(screen_size);
+		set_resizable(false);
+	}
+#endif
+
 
 	AudioDriverManagerSW::get_driver(p_audio_driver)->set_singleton();
 
@@ -264,19 +291,20 @@ void OS_X11::initialize(const VideoMode& p_desired,int p_video_driver,int p_audi
 
 	XChangeWindowAttributes(x11_display, x11_window,CWEventMask,&new_attr);
 	
-    XClassHint* classHint;
+	XClassHint* classHint;
 
-    /* set the titlebar name */
-    XStoreName(x11_display, x11_window, "Godot");
+	/* set the titlebar name */
+	XStoreName(x11_display, x11_window, "Godot");
 
-    /* set the name and class hints for the window manager to use */
-    classHint = XAllocClassHint();
-    if (classHint) {
-        classHint->res_name = "Godot";
-        classHint->res_class = "Godot";
-    }
-    XSetClassHint(x11_display, x11_window, classHint);
-    XFree(classHint);
+	/* set the name and class hints for the window manager to use */
+	classHint = XAllocClassHint();
+	if (classHint) {
+		char wmclass[] = "Godot";
+		classHint->res_name = wmclass;
+		classHint->res_class = wmclass;
+	}
+	XSetClassHint(x11_display, x11_window, classHint);
+	XFree(classHint);
 
 	wm_delete = XInternAtom(x11_display, "WM_DELETE_WINDOW", true);	
 	XSetWMProtocols(x11_display, x11_window, &wm_delete, 1);
@@ -468,8 +496,9 @@ void OS_X11::set_mouse_mode(MouseMode p_mode) {
 		center.y = current_videomode.height/2;
 		XWarpPointer(x11_display, None, x11_window,
 			      0,0,0,0, (int)center.x, (int)center.y);
-	}
 
+		input->set_mouse_pos(center);
+	}
 }
 
 void OS_X11::warp_mouse_pos(const Point2& p_to) {
@@ -497,7 +526,6 @@ OS::MouseMode OS_X11::get_mouse_mode() const {
 
 
 int OS_X11::get_mouse_button_state() const {
-
 	return last_button_state;
 }
 
@@ -524,6 +552,344 @@ void OS_X11::get_fullscreen_mode_list(List<VideoMode> *p_list,int p_screen) cons
 
 }
 
+#ifdef NEW_WM_API
+#if 0
+// Just now not needed. Can be used for a possible OS.set_border(bool) method
+void OS_X11::set_wm_border(bool p_enabled) {
+	// needed for lxde/openbox, possibly others
+	Hints hints;
+	Atom property;
+	hints.flags = 2;
+	hints.decorations = p_enabled ? 1L : 0L;
+	property = XInternAtom(x11_display, "_MOTIF_WM_HINTS", True);
+	XChangeProperty(x11_display, x11_window, property, property, 32, PropModeReplace, (unsigned char *)&hints, 5);
+	XMapRaised(x11_display, x11_window);
+	//XMoveResizeWindow(x11_display, x11_window, 0, 0, 800, 800);
+}
+#endif
+
+void OS_X11::set_wm_fullscreen(bool p_enabled) {
+	// Using EWMH -- Extened Window Manager Hints
+	XEvent xev;
+	Atom wm_state = XInternAtom(x11_display, "_NET_WM_STATE", False);
+	Atom wm_fullscreen = XInternAtom(x11_display, "_NET_WM_STATE_FULLSCREEN", False);
+
+	memset(&xev, 0, sizeof(xev));
+	xev.type = ClientMessage;
+	xev.xclient.window = x11_window;
+	xev.xclient.message_type = wm_state;
+	xev.xclient.format = 32;
+	xev.xclient.data.l[0] = p_enabled ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE;
+	xev.xclient.data.l[1] = wm_fullscreen;
+	xev.xclient.data.l[2] = 0;
+
+	XSendEvent(x11_display, DefaultRootWindow(x11_display), False, SubstructureRedirectMask | SubstructureNotifyMask, &xev);
+}
+
+int OS_X11::get_screen_count() const {
+	// Using Xinerama Extension
+	int event_base, error_base;
+	const Bool ext_okay = XineramaQueryExtension(x11_display, &event_base, &error_base);
+	if( !ext_okay ) return 0;
+	
+	int count;
+	XineramaScreenInfo* xsi = XineramaQueryScreens(x11_display, &count);
+	XFree(xsi);
+	return count;
+}
+
+int OS_X11::get_screen() const {
+        int x,y;
+        Window child;
+        XTranslateCoordinates( x11_display, x11_window, DefaultRootWindow(x11_display), 0, 0, &x, &y, &child);
+
+	int count = get_screen_count();
+	for(int i=0; i<count; i++) {
+		Point2i pos = get_screen_position(i);
+		Size2i size = get_screen_size(i);
+		if( (x >= pos.x && x <pos.x + size.width) && (y >= pos.y && y < pos.y + size.height) )
+			return i;	
+	}
+	return 0;
+}
+
+void OS_X11::set_screen(int p_screen) {
+	int count = get_screen_count();
+	if(p_screen >= count) return;
+		
+	if( current_videomode.fullscreen ) {
+		Point2i position = get_screen_position(p_screen);
+		Size2i size = get_screen_size(p_screen);
+
+	        XMoveResizeWindow(x11_display, x11_window, position.x, position.y, size.x, size.y);
+	}
+	else {
+		if( p_screen != get_screen() ) {
+			Point2i position = get_screen_position(p_screen);
+			XMoveWindow(x11_display, x11_window, position.x, position.y);
+		}
+	}
+}
+
+Point2 OS_X11::get_screen_position(int p_screen) const {
+	// Using Xinerama Extension
+	int event_base, error_base;
+	const Bool ext_okay = XineramaQueryExtension(x11_display, &event_base, &error_base);
+	if( !ext_okay ) return Point2i(0,0);
+	
+	int count;
+	XineramaScreenInfo* xsi = XineramaQueryScreens(x11_display, &count);
+	if( p_screen >= count ) return Point2i(0,0);
+	
+	Point2i position = Point2i(xsi[p_screen].x_org, xsi[p_screen].y_org);
+	XFree(xsi);
+	return position;
+}
+
+Size2 OS_X11::get_screen_size(int p_screen) const {
+	// Using Xinerama Extension
+	int event_base, error_base;
+	const Bool ext_okay = XineramaQueryExtension(x11_display, &event_base, &error_base);
+	if( !ext_okay ) return Size2i(0,0);
+	
+	int count;
+	XineramaScreenInfo* xsi = XineramaQueryScreens(x11_display, &count);
+	if( p_screen >= count ) return Size2i(0,0);
+	
+	Size2i size = Point2i(xsi[p_screen].width, xsi[p_screen].height);
+	XFree(xsi);
+	return size;
+}
+	
+
+Point2 OS_X11::get_window_position() const {
+	int x,y;
+	Window child;
+	XTranslateCoordinates( x11_display, x11_window, DefaultRootWindow(x11_display), 0, 0, &x, &y, &child);
+
+	int screen = get_screen();
+	Point2i screen_position = get_screen_position(screen);
+
+	return Point2i(x-screen_position.x, y-screen_position.y);		
+}
+
+void OS_X11::set_window_position(const Point2& p_position) {
+	// Using EWMH -- Extended Window Manager Hints
+	// to get the size of the decoration 
+	Atom property = XInternAtom(x11_display,"_NET_FRAME_EXTENTS", True);
+	Atom type;
+	int format;
+	unsigned long len;
+	unsigned long remaining;
+	unsigned char *data = NULL;
+	int result;
+
+	result = XGetWindowProperty(
+		x11_display,
+		x11_window,
+		property,
+		0,
+		32,
+		False,
+		AnyPropertyType,
+		&type,
+		&format,
+		&len,
+		&remaining,
+		&data
+	);	
+
+	long left = 0L;
+	long top = 0L;
+
+	if( result == Success ) {
+		long *extends = (long *) data;
+	
+		left = extends[0];
+		top = extends[2];
+	
+		XFree(data);
+	}
+
+	int screen = get_screen();
+	Point2i screen_position = get_screen_position(screen);
+
+	left -= screen_position.x;
+	top -= screen_position.y;
+
+	XMoveWindow(x11_display,x11_window,p_position.x - left,p_position.y - top);
+}
+
+Size2 OS_X11::get_window_size() const {
+	XWindowAttributes xwa;
+	XGetWindowAttributes(x11_display, x11_window, &xwa);
+	return Size2i(xwa.width, xwa.height);
+}
+
+void OS_X11::set_window_size(const Size2 p_size) {
+	XResizeWindow(x11_display, x11_window, p_size.x, p_size.y);
+}
+
+void OS_X11::set_fullscreen(bool p_enabled) {
+	set_wm_fullscreen(p_enabled);
+	current_videomode.fullscreen = p_enabled;
+
+	visual_server->init();
+}
+
+bool OS_X11::is_fullscreen() const {
+	return current_videomode.fullscreen;
+}
+
+void OS_X11::set_resizable(bool p_enabled) {
+	XSizeHints *xsh;
+	xsh = XAllocSizeHints();
+	xsh->flags = p_enabled ? 0L : PMinSize | PMaxSize;
+	if(!p_enabled) {
+		XWindowAttributes xwa;
+		XGetWindowAttributes(x11_display,x11_window,&xwa);
+		xsh->min_width = xwa.width; 
+		xsh->max_width = xwa.width;
+		xsh->min_height = xwa.height;
+		xsh->max_height = xwa.height;
+	}
+	XSetWMNormalHints(x11_display, x11_window, xsh);
+	XFree(xsh);
+	current_videomode.resizable = p_enabled;
+}
+
+bool OS_X11::is_resizable() const {
+	return current_videomode.resizable;
+}
+
+void OS_X11::set_minimized(bool p_enabled) {
+        // Using ICCCM -- Inter-Client Communication Conventions Manual
+        XEvent xev;
+        Atom wm_change = XInternAtom(x11_display, "WM_CHANGE_STATE", False);
+
+        memset(&xev, 0, sizeof(xev));
+        xev.type = ClientMessage;
+        xev.xclient.window = x11_window;
+        xev.xclient.message_type = wm_change;
+        xev.xclient.format = 32;
+        xev.xclient.data.l[0] = p_enabled ? WM_IconicState : WM_NormalState;
+
+        XSendEvent(x11_display, DefaultRootWindow(x11_display), False, SubstructureRedirectMask | SubstructureNotifyMask, &xev);
+	
+        //XEvent xev;
+	Atom wm_state     =  XInternAtom(x11_display, "_NET_WM_STATE", False);
+	Atom wm_hidden    =  XInternAtom(x11_display, "_NET_WM_STATE_HIDDEN", False);
+
+	memset(&xev, 0, sizeof(xev));
+	xev.type = ClientMessage;
+	xev.xclient.window = x11_window;
+	xev.xclient.message_type = wm_state;
+	xev.xclient.format = 32;
+	xev.xclient.data.l[0] = _NET_WM_STATE_ADD;
+	xev.xclient.data.l[1] = wm_hidden;
+
+	XSendEvent(x11_display, DefaultRootWindow(x11_display), False, SubstructureRedirectMask | SubstructureNotifyMask, &xev);	
+}
+
+bool OS_X11::is_minimized() const {
+	// Using ICCCM -- Inter-Client Communication Conventions Manual
+        Atom property = XInternAtom(x11_display,"WM_STATE", True);
+        Atom type;
+        int format;
+        unsigned long len;
+        unsigned long remaining;
+        unsigned char *data = NULL;
+
+        int result = XGetWindowProperty(
+                x11_display,
+                x11_window,
+                property,
+                0,
+                32,
+                False,
+                AnyPropertyType,
+                &type,
+                &format,
+                &len,
+                &remaining,
+                &data
+        );
+
+	if( result == Success ) {
+		long *state = (long *) data;
+		if( state[0] == WM_IconicState ) 
+			return true;
+	}
+	return false;
+}
+
+void OS_X11::set_maximized(bool p_enabled) {
+	// Using EWMH -- Extended Window Manager Hints 
+	XEvent xev;
+	Atom wm_state = XInternAtom(x11_display, "_NET_WM_STATE", False);
+	Atom wm_max_horz = XInternAtom(x11_display, "_NET_WM_STATE_MAXIMIZED_HORZ", False);
+	Atom wm_max_vert = XInternAtom(x11_display, "_NET_WM_STATE_MAXIMIZED_VERT", False);
+
+	memset(&xev, 0, sizeof(xev));
+	xev.type = ClientMessage;
+	xev.xclient.window = x11_window;
+	xev.xclient.message_type = wm_state;
+	xev.xclient.format = 32;
+	xev.xclient.data.l[0] = p_enabled ? _NET_WM_STATE_ADD : _NET_WM_STATE_REMOVE;
+	xev.xclient.data.l[1] = wm_max_horz;
+	xev.xclient.data.l[2] = wm_max_vert;
+
+	XSendEvent(x11_display, DefaultRootWindow(x11_display), False, SubstructureRedirectMask | SubstructureNotifyMask, &xev);
+
+	maximized = p_enabled;
+}
+
+bool OS_X11::is_maximized() const {
+	// Using EWMH -- Extended Window Manager Hints
+        Atom property = XInternAtom(x11_display,"_NET_WM_STATE",False );
+        Atom type;
+        int format;
+        unsigned long len;
+        unsigned long remaining;
+        unsigned char *data = NULL;
+
+        int result = XGetWindowProperty(
+                x11_display,
+                x11_window,
+                property,
+                0,
+                1024,
+                False,
+                XA_ATOM,
+                &type,
+                &format,
+                &len,
+                &remaining,
+                &data
+        );
+
+	if(result == Success) { 
+		Atom *atoms = (Atom*) data;
+		Atom wm_max_horz = XInternAtom(x11_display, "_NET_WM_STATE_MAXIMIZED_HORZ", False);
+		Atom wm_max_vert = XInternAtom(x11_display, "_NET_WM_STATE_MAXIMIZED_VERT", False);
+		bool found_wm_max_horz = false;
+		bool found_wm_max_vert = false;
+
+		for( unsigned int i=0; i < len; i++ ) {
+			if( atoms[i] == wm_max_horz )
+				found_wm_max_horz = true;
+			if( atoms[i] == wm_max_vert )
+				found_wm_max_vert = true;
+
+			if( found_wm_max_horz && found_wm_max_vert )
+				return true;
+		}
+		XFree(atoms);
+	}
+
+	return false;
+}
+#endif
 
 InputModifierState OS_X11::get_key_modifier_state(unsigned int p_x11_state) {
 	
@@ -598,11 +964,9 @@ void OS_X11::handle_key_event(XKeyEvent *p_event, bool p_echo) {
 	KeySym keysym_keycode=0; // keysym used to find a keycode
 	KeySym keysym_unicode=0; // keysym used to find unicode
 					
-	int nbytes=0; // bytes the string takes
-						 
 	// XLookupString returns keysyms usable as nice scancodes/
 	char str[256+1];
-	nbytes=XLookupString(xkeyevent, str, 256, &keysym_keycode, NULL);
+	XLookupString(xkeyevent, str, 256, &keysym_keycode, NULL);
 						 
  	// Meanwhile, XLookupString returns keysyms useful for unicode.
 	
@@ -699,7 +1063,7 @@ void OS_X11::handle_key_event(XKeyEvent *p_event, bool p_echo) {
 			::Time tresh=ABS(peek_event.xkey.time-xkeyevent->time);
 			if (peek_event.type == KeyPress && tresh<5 ) {
 				KeySym rk;
-				nbytes=XLookupString((XKeyEvent*)&peek_event, str, 256, &rk, NULL);
+				XLookupString((XKeyEvent*)&peek_event, str, 256, &rk, NULL);
 				if (rk==keysym_keycode) {
 					XEvent event;
 					XNextEvent(x11_display, &event); //erase next event
@@ -763,13 +1127,18 @@ void OS_X11::process_xevents() {
 			break;
 
 		case VisibilityNotify: {
-
 			XVisibilityEvent * visibility = (XVisibilityEvent *)&event;
 			minimized = (visibility->state == VisibilityFullyObscured);
-
 		} break;
 
-		case FocusIn:
+		case FocusIn: 
+			minimized = false;
+#ifdef NEW_WM_API
+			if(current_videomode.fullscreen) {
+				set_wm_fullscreen(true);
+				visual_server->init();
+			}
+#endif
 			main_loop->notification(MainLoop::NOTIFICATION_WM_FOCUS_IN);
 			if (mouse_mode==MOUSE_MODE_CAPTURED) {
 				XGrabPointer(x11_display, x11_window, True,
@@ -780,6 +1149,13 @@ void OS_X11::process_xevents() {
 			break;
 
 		case FocusOut:
+#ifdef NEW_WM_API
+			if(current_videomode.fullscreen) {
+				set_wm_fullscreen(false);
+				set_minimized(true);
+				visual_server->init();
+			}
+#endif
 			main_loop->notification(MainLoop::NOTIFICATION_WM_FOCUS_OUT);
 			if (mouse_mode==MOUSE_MODE_CAPTURED) {
 				//dear X11, I try, I really try, but you never work, you do whathever you want.
@@ -806,7 +1182,7 @@ void OS_X11::process_xevents() {
 				event.xbutton.x=last_mouse_pos.x;
 				event.xbutton.y=last_mouse_pos.y;
 			}
-			
+		
 			InputEvent mouse_event;
 			mouse_event.ID=++event_id;
 			mouse_event.type = InputEvent::MOUSE_BUTTON;
@@ -841,7 +1217,7 @@ void OS_X11::process_xevents() {
 					last_click_ms+=diff;	
 					last_click_pos = Point2(event.xbutton.x,event.xbutton.y);
 				}
-			}		
+			}	
 
 			input->parse_input_event( mouse_event);
 
@@ -851,16 +1227,15 @@ void OS_X11::process_xevents() {
 						
 			
 			last_timestamp=event.xmotion.time;
-			
+		
 			// Motion is also simple.
 			// A little hack is in order
 			// to be able to send relative motion events.
-			
 			Point2i pos( event.xmotion.x, event.xmotion.y );
 
 			if (mouse_mode==MOUSE_MODE_CAPTURED) {
 #if 1
-				Vector2 c = Point2i(current_videomode.width/2,current_videomode.height/2);
+				//Vector2 c = Point2i(current_videomode.width/2,current_videomode.height/2);
 				if (pos==Point2i(current_videomode.width/2,current_videomode.height/2)) {
 					//this sucks, it's a hack, etc and is a little inaccurate, etc.
 					//but nothing I can do, X11 sucks.
@@ -869,9 +1244,9 @@ void OS_X11::process_xevents() {
 					break;
 				}
 
-				Point2i ncenter = pos;
-				pos = last_mouse_pos + ( pos-center );
-				center=ncenter;
+				Point2i new_center = pos;
+				pos = last_mouse_pos + ( pos - center );
+				center=new_center;
 				do_mouse_warp=true;
 #else
 				//Dear X11, thanks for making my life miserable
@@ -884,9 +1259,7 @@ void OS_X11::process_xevents() {
 				XWarpPointer(x11_display, None, x11_window,
 					      0,0,0,0, (int)center.x, (int)center.y);
 #endif
-
 			}
-
 			
 			if (!last_mouse_pos_valid) {
 				
@@ -895,7 +1268,14 @@ void OS_X11::process_xevents() {
 			}
 			
 			Point2i rel = pos - last_mouse_pos;
-			
+
+#ifdef NEW_WM_API
+			if (mouse_mode==MOUSE_MODE_CAPTURED) {
+				pos.x = current_videomode.width / 2;
+				pos.y = current_videomode.height / 2;
+			}
+#endif
+
 			InputEvent motion_event;
 			motion_event.ID=++event_id;
 			motion_event.type=InputEvent::MOUSE_MOTION;
@@ -915,6 +1295,8 @@ void OS_X11::process_xevents() {
 			motion_event.mouse_motion.relative_y=rel.y;
 						
 			last_mouse_pos=pos;
+
+			// printf("rel: %d,%d\n", rel.x, rel.y );
 			
 			input->parse_input_event( motion_event);
 			
@@ -989,8 +1371,18 @@ void OS_X11::process_xevents() {
 	if (do_mouse_warp) {
 
 		XWarpPointer(x11_display, None, x11_window,
-			      0,0,0,0, (int)current_videomode.width/2, (int)current_videomode.height/2);
-
+		 	      0,0,0,0, (int)current_videomode.width/2, (int)current_videomode.height/2);
+
+		/*	
+		Window root, child;
+		int root_x, root_y;
+		int win_x, win_y;
+		unsigned int mask;
+		XQueryPointer( x11_display, x11_window, &root, &child, &root_x, &root_y, &win_x, &win_y, &mask );
+
+		printf("Root: %d,%d\n", root_x, root_y);
+		printf("Win: %d,%d\n", win_x, win_y);
+		*/
 	}
 }
 
@@ -1358,6 +1750,7 @@ void OS_X11::process_joysticks() {
 	#endif
 };
 
+
 void OS_X11::set_cursor_shape(CursorShape p_shape) {
 
 	ERR_FAIL_INDEX(p_shape,CURSOR_MAX);
@@ -1470,8 +1863,6 @@ OS_X11::OS_X11() {
 #endif
 
 	minimized = false;
-	xim_style=NULL;
+	xim_style=0L;
 	mouse_mode=MOUSE_MODE_VISIBLE;
-
-
 };
diff --git a/platform/x11/os_x11.h b/platform/x11/os_x11.h
index dd2476ec1b..ffa1ce00b3 100644
--- a/platform/x11/os_x11.h
+++ b/platform/x11/os_x11.h
@@ -159,6 +159,12 @@ class OS_X11 : public OS_Unix {
 	int joystick_count;
 	Joystick joysticks[JOYSTICKS_MAX];
 
+#ifdef NEW_WM_API
+	unsigned int capture_idle;
+	bool maximized;
+	//void set_wm_border(bool p_enabled);
+	void set_wm_fullscreen(bool p_enabled);
+#endif
 
 protected:
 
@@ -166,8 +172,8 @@ protected:
 	virtual const char * get_video_driver_name(int p_driver) const;	
 	virtual VideoMode get_default_video_mode() const;
 
-    virtual int get_audio_driver_count() const;
-    virtual const char * get_audio_driver_name(int p_driver) const;
+	virtual int get_audio_driver_count() const;
+	virtual const char * get_audio_driver_name(int p_driver) const;
 
 	virtual void initialize(const VideoMode& p_desired,int p_video_driver,int p_audio_driver);	
 	virtual void finalize();
@@ -178,6 +184,7 @@ protected:
 	void process_joysticks();
 	void close_joystick(int p_id = -1);
 
+
 public:
 
 	virtual String get_name();
@@ -213,6 +220,25 @@ public:
 	virtual VideoMode get_video_mode(int p_screen=0) const;
 	virtual void get_fullscreen_mode_list(List<VideoMode> *p_list,int p_screen=0) const;
 
+#ifdef NEW_WM_API
+	virtual int get_screen_count() const;
+	virtual int get_screen() const;
+	virtual void set_screen(int p_screen);
+	virtual Point2 get_screen_position(int p_screen=0) const;
+	virtual Size2 get_screen_size(int p_screen=0) const;
+	virtual Point2 get_window_position() const;
+	virtual void set_window_position(const Point2& p_position);
+	virtual Size2 get_window_size() const;
+	virtual void set_window_size(const Size2 p_size);
+	virtual void set_fullscreen(bool p_enabled);
+	virtual bool is_fullscreen() const;
+	virtual void set_resizable(bool p_enabled);
+	virtual bool is_resizable() const;
+	virtual void set_minimized(bool p_enabled);
+	virtual bool is_minimized() const;
+	virtual void set_maximized(bool p_enabled);
+	virtual bool is_maximized() const;
+#endif
 	virtual void move_window_to_foreground();
 
 	void run();