From 77ee361f5cedb415c1189b0a75bde83a1a275f35 Mon Sep 17 00:00:00 2001
From: Dana Jansens <danakj@orodu.net>
Date: Fri, 16 Apr 2010 18:55:33 -0400
Subject: [PATCH] allow warping the mouse pointer when switching desktops by
 bumping into the edge of the monitor with a window

based on a patch by Nathaniel Gephart <computinchuck@gmail.com>
---
 data/rc.xml          |  3 +++
 data/rc.xsd          |  1 +
 openbox/config.c     | 10 +++++++---
 openbox/config.h     |  3 +++
 openbox/moveresize.c | 33 ++++++++++++++++++++++++++++++++-
 5 files changed, 46 insertions(+), 4 deletions(-)

diff --git a/data/rc.xml b/data/rc.xml
index d1b387a1..e4376a4b 100644
--- a/data/rc.xml
+++ b/data/rc.xml
@@ -318,6 +318,9 @@
   <!-- Time before changing desktops when the pointer touches the edge of the
        screen while moving a window, in milliseconds (1000 = 1 second).
        Set this to 0 to disable warping -->
+  <screenEdgeWarpMouse>false</screenEdgeWarpMouse>
+  <!-- Set this to TRUE to move the mouse pointer across the desktop when
+       switching due to hitting the edge of the screen -->
 
   <context name="Frame">
     <mousebind button="A-Left" action="Press">
diff --git a/data/rc.xsd b/data/rc.xsd
index 2fed1f48..3a1d654a 100644
--- a/data/rc.xsd
+++ b/data/rc.xsd
@@ -210,6 +210,7 @@
             <xsd:element minOccurs="0" name="dragThreshold" type="xsd:integer"/>
             <xsd:element minOccurs="0" name="doubleClickTime" type="xsd:integer"/>
             <xsd:element minOccurs="0" name="screenEdgeWarpTime" type="xsd:integer"/>
+            <xsd:element minOccurs="0" name="screenEdgeWarpMouse" type="ob:bool"/>
             <xsd:element maxOccurs="unbounded" name="context" type="ob:context"/>
         </xsd:sequence>
     </xsd:complexType>
diff --git a/openbox/config.c b/openbox/config.c
index bf0facda..573ce4c2 100644
--- a/openbox/config.c
+++ b/openbox/config.c
@@ -86,9 +86,10 @@ guint           config_dock_app_move_modifiers;
 guint config_keyboard_reset_keycode;
 guint config_keyboard_reset_state;
 
-gint config_mouse_threshold;
-gint config_mouse_dclicktime;
-gint config_mouse_screenedgetime;
+gint     config_mouse_threshold;
+gint     config_mouse_dclicktime;
+gint     config_mouse_screenedgetime;
+gboolean config_mouse_screenedgewarp;
 
 guint    config_menu_hide_delay;
 gboolean config_menu_middle;
@@ -465,6 +466,8 @@ static void parse_mouse(xmlNodePtr node, gpointer d)
         if (config_mouse_screenedgetime && config_mouse_screenedgetime < 25)
             config_mouse_screenedgetime = 25;
     }
+    if ((n = obt_xml_find_node(node, "screenEdgeWarpMouse")))
+        config_mouse_screenedgewarp = obt_xml_node_bool(n);
 
     n = obt_xml_find_node(node, "context");
     while (n) {
@@ -1030,6 +1033,7 @@ void config_startup(ObtXmlInst *i)
     config_mouse_threshold = 8;
     config_mouse_dclicktime = 200;
     config_mouse_screenedgetime = 400;
+    config_mouse_screenedgewarp = FALSE;
 
     bind_default_mouse();
 
diff --git a/openbox/config.h b/openbox/config.h
index 818dcc76..90b6581a 100644
--- a/openbox/config.h
+++ b/openbox/config.h
@@ -180,6 +180,9 @@ extern gint config_mouse_dclicktime;
 /*! Number of milliseconds that the mouse has to be on the screen edge before
   a screen edge event is triggered */
 extern gint config_mouse_screenedgetime;
+/*! When TRUE, the mouse is warped to the other side of the desktop after
+  switching desktops from bumping the screen edge */
+extern gboolean config_mouse_screenedgewarp;
 
 /*! Number of pixels to resist while crossing another window's edge */
 extern gint config_resist_win;
diff --git a/openbox/moveresize.c b/openbox/moveresize.c
index 8609d3be..aa1957af 100644
--- a/openbox/moveresize.c
+++ b/openbox/moveresize.c
@@ -529,6 +529,34 @@ static void calc_resize(gboolean keyboard, gint keydist, gint *dw, gint *dh,
     *dh = nh - oh;
 }
 
+static void edge_warp_move_ptr(void)
+{
+    gint x, y;
+    const Rect* a;
+
+    screen_pointer_pos(&x, &y);
+    a = screen_physical_area_all_monitors();
+
+    switch (edge_warp_dir) {
+	case OB_DIRECTION_NORTH:
+	    y = a->height - 1;
+	    break;
+	case OB_DIRECTION_EAST:
+	    x = a->x;
+	    break;
+	case OB_DIRECTION_SOUTH:
+	    y = a->y;
+	    break;
+	case OB_DIRECTION_WEST:
+	    x = a->width - 1;
+	    break;
+	default:
+        g_assert_not_reached();
+    }
+
+    XWarpPointer(obt_display, 0, obt_root(ob_screen), 0, 0, 0, 0, x, y);
+}
+
 static gboolean edge_warp_delay_func(gpointer data)
 {
     guint d;
@@ -537,7 +565,10 @@ static gboolean edge_warp_delay_func(gpointer data)
        after that */
     if (edge_warp_odd) {
         d = screen_find_desktop(screen_desktop, edge_warp_dir, TRUE, FALSE);
-        if (d != screen_desktop) screen_set_desktop(d, TRUE);
+        if (d != screen_desktop) {
+            if (config_mouse_screenedgewarp) edge_warp_move_ptr();
+            screen_set_desktop(d, TRUE);
+        }
     }
     edge_warp_odd = !edge_warp_odd;
 
-- 
2.39.2