Change default doubleclick timeout to 500ms and keep track of where l…

…ast click was

Bug #5152 - "mouse double-click time is too low by default - 200ms"

We only use the doubleclick in one place in the default configuration,
for doubleclicking titlebars to maximize windows, so any negative impact
of increasing the timeout should be minimal, especially with the
addition of requiring the two clicks to be in the same place.

Doubleclicks are hardcoded to occur within 8 pixels for now, it doesn't
seem worth it to add a config until someone complains. A possibility is
using the drag threshold, but some people have that set very low so it
could be hard to doubleclick then.

data/rc.xml

@@ -313,7 +313,7 @@
 <mouse>
   <dragThreshold>1</dragThreshold>
   <!-- number of pixels the mouse must move before a drag begins -->
-  <doubleClickTime>200</doubleClickTime>
+  <doubleClickTime>500</doubleClickTime>
   <!-- in milliseconds (1000 = 1 second) -->
   <screenEdgeWarpTime>400</screenEdgeWarpTime>
   <!-- Time before changing desktops when the pointer touches the edge of the

doc/rc-mouse-focus.xml

@@ -226,7 +226,7 @@
 <mouse>
   <dragThreshold>8</dragThreshold>
   <!-- number of pixels the mouse must move before a drag begins -->
-  <doubleClickTime>200</doubleClickTime>
+  <doubleClickTime>500</doubleClickTime>
   <!-- in milliseconds (1000 = 1 second) -->
 
   <context name="Frame">

openbox/config.c

@@ -1070,7 +1070,7 @@ void config_startup(ObtXmlInst *i)
     obt_xml_register(i, "keyboard", parse_keyboard, NULL);
 
     config_mouse_threshold = 8;
-    config_mouse_dclicktime = 200;
+    config_mouse_dclicktime = 500;
     config_mouse_screenedgetime = 400;
     config_mouse_screenedgewarp = FALSE;
 

openbox/mouse.c

@@ -211,7 +211,7 @@ gboolean mouse_event(ObClient *client, XEvent *e)
     static Time ltime;
     static guint button = 0, state = 0, lbutton = 0;
     static Window lwindow = None;
-    static gint px, py, pwx = -1, pwy = -1;
+    static gint px, py, pwx = -1, pwy = -1, lx = -10, ly = -10;
     gboolean used = FALSE;
 
     ObFrameContext context;
@@ -290,18 +290,24 @@ gboolean mouse_event(ObClient *client, XEvent *e)
                 if (e->xbutton.x >= (signed)-b &&
                     e->xbutton.y >= (signed)-b &&
                     e->xbutton.x < (signed)(w+b) &&
-                    e->xbutton.y < (signed)(h+b)) {
+                    e->xbutton.y < (signed)(h+b))
+                {
                     click = TRUE;
                     /* double clicks happen if there were 2 in a row! */
                     if (lbutton == button &&
                         lwindow == e->xbutton.window &&
                         e->xbutton.time - config_mouse_dclicktime <=
-                        ltime) {
+                        ltime &&
+                        ABS(e->xbutton.x - lx) < 8 &&
+                        ABS(e->xbutton.y - ly) < 8)
+                    {
                         dclick = TRUE;
                         lbutton = 0;
                     } else {
                         lbutton = button;
                         lwindow = e->xbutton.window;
+                        lx = e->xbutton.x;
+                        ly = e->xbutton.y;
                     }
                 } else {
                     lbutton = 0;