mouse: add object_under_pointer

Signed-off-by: Gregor Best <farhaven@googlemail.com>
Signed-off-by: Julien Danjou <julien@danjou.info>

event.c

@@ -89,50 +89,6 @@ event_handle_mouse_button(client_t *c,
             }
 }
 
-/** Get a widget node from a wibox by coords.
- * \param Container position.
- * \param widgets The widget list.
- * \param width The container width.
- * \param height The container height.
- * \param x X coordinate of the widget.
- * \param y Y coordinate of the widget.
- * \return A widget.
- */
-static widget_t *
-widget_getbycoords(position_t position, widget_node_array_t *widgets,
-                   int width, int height, int16_t *x, int16_t *y)
-{
-    int tmp;
-
-    /* Need to transform coordinates like it was top/bottom */
-    switch(position)
-    {
-      case Right:
-        tmp = *y;
-        *y = width - *x;
-        *x = tmp;
-        break;
-      case Left:
-        tmp = *y;
-        *y = *x;
-        *x = height - tmp;
-        break;
-      default:
-        break;
-    }
-
-    for(int i = 0; i < widgets->len; i++)
-    {
-        widget_node_t *w = &widgets->tab[i];
-        if(w->widget->isvisible &&
-           *x >= w->geometry.x && *x < w->geometry.x + w->geometry.width
-           && *y >= w->geometry.y && *y < w->geometry.y + w->geometry.height)
-            return w->widget;
-    }
-
-    return NULL;
-}
-
 /** Handle an event with mouse grabber if needed
  * \param x The x coordinate.
  * \param y The y coordinate.

lib/awful/mouse.lua.in

@@ -9,6 +9,7 @@ local layout = require("awful.layout")
 local tag = require("awful.tag")
 local hooks = require("awful.hooks")
 local aclient = require("awful.client")
+local type = type
 local math = math
 local ipairs = ipairs
 local capi =
@@ -24,6 +25,27 @@ module("awful.mouse")
 
 client = {}
 
+function client_under_pointer()
+    local obj = capi.mouse.object_under_pointer()
+    if type(obj) == "client" then
+        return obj
+    end
+end
+
+function wibox_under_pointer()
+    local obj = capi.mouse.object_under_pointer()
+    if type(obj) == "wibox" then
+        return obj
+    end
+end
+
+function widget_under_pointer()
+    local obj, obj2 = capi.mouse.object_under_pointer()
+    if type(obj2) == "widget" then
+        return obj2
+    end
+end
+
 local function snap_outside(g, sg, snap)
     if g.x < snap + sg.x + sg.width and g.x > sg.x + sg.width then
         g.x = sg.x + sg.width
@@ -119,7 +141,7 @@ function client.move(c, snap)
                                       elseif lay ~= layout.suit.magnifier then
                                           c.screen = capi.mouse.screen
                                           if layout.get(c.screen) ~= layout.suit.floating then
-                                              local c_u_m = capi.mouse.client_under_pointer()
+                                              local c_u_m = client_under_pointer()
                                               if c_u_m and not aclient.floating.get(c_u_m) then
                                                   if c_u_m ~= c then
                                                       c:swap(c_u_m)

mouse.c

@@ -24,6 +24,7 @@
 #include "common/tokenize.h"
 #include "screen.h"
 #include "tag.h"
+#include "wibox.h"
 #include "common/xcursor.h"
 
 extern awesome_t globalconf;
@@ -47,11 +48,12 @@ button_delete(button_t **button)
  * \param window The window to get position on.
  * \param x will be set to the Pointer-x-coordinate relative to window
  * \param y will be set to the Pointer-y-coordinate relative to window
+ * \param child Will be set to the window under the pointer.
  * \param mask will be set to the current buttons state
  * \return true on success, false if an error occured
  **/
 bool
-mouse_query_pointer(xcb_window_t window, int *x, int *y, uint16_t *mask)
+mouse_query_pointer(xcb_window_t window, int16_t *x, int16_t *y, xcb_window_t *child, uint16_t *mask)
 {
     xcb_query_pointer_cookie_t query_ptr_c;
     xcb_query_pointer_reply_t *query_ptr_r;
@@ -66,6 +68,8 @@ mouse_query_pointer(xcb_window_t window, int *x, int *y, uint16_t *mask)
     *y = query_ptr_r->win_y;
     if (mask)
         *mask = query_ptr_r->mask;
+    if(child)
+        *child = query_ptr_r->child;
 
     p_delete(&query_ptr_r);
 
@@ -76,11 +80,12 @@ mouse_query_pointer(xcb_window_t window, int *x, int *y, uint16_t *mask)
  * \param screen This will be set to the screen number the mouse is on.
  * \param x This will be set to the Pointer-x-coordinate relative to window.
  * \param y This will be set to the Pointer-y-coordinate relative to window.
+ * \param child This will be set to the window under the pointer.
  * \param mask This will be set to the current buttons state.
  * \return True on success, false if an error occured.
  */
 static bool
-mouse_query_pointer_root(int *s, int *x, int *y, uint16_t *mask)
+mouse_query_pointer_root(int *s, int16_t *x, int16_t *y, xcb_window_t *child, uint16_t *mask)
 {
     for(int screen = 0;
         screen < xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
@@ -88,7 +93,7 @@ mouse_query_pointer_root(int *s, int *x, int *y, uint16_t *mask)
     {
         xcb_window_t root = xutil_screen_get(globalconf.connection, screen)->root;
 
-        if(mouse_query_pointer(root, x, y, mask))
+        if(mouse_query_pointer(root, x, y, child, mask))
         {
             *s = screen;
             return true;
@@ -324,13 +329,13 @@ luaA_mouse_index(lua_State *L)
 {
     size_t len;
     const char *attr = luaL_checklstring(L, 2, &len);
-    int mouse_x, mouse_y, i;
+    int16_t mouse_x, mouse_y;
-    int screen;
+    int screen, i;
 
     switch(a_tokenize(attr, len))
     {
       case A_TK_SCREEN:
-        if(!mouse_query_pointer_root(&screen, &mouse_x, &mouse_y, NULL))
+        if(!mouse_query_pointer_root(&screen, &mouse_x, &mouse_y, NULL, NULL))
             return 0;
 
         i = screen_getbycoord(screen, mouse_x, mouse_y);
@@ -421,7 +426,8 @@ static int
 luaA_mouse_coords(lua_State *L)
 {
     uint16_t mask;
-    int screen, x, y, mouse_x, mouse_y;
+    int screen, x, y;
+    int16_t mouse_x, mouse_y;
 
     if(lua_gettop(L) == 1)
     {
@@ -429,7 +435,7 @@ luaA_mouse_coords(lua_State *L)
 
         luaA_checktable(L, 1);
 
-        if(!mouse_query_pointer_root(&screen, &mouse_x, &mouse_y, &mask))
+        if(!mouse_query_pointer_root(&screen, &mouse_x, &mouse_y, NULL, &mask))
             return 0;
 
         x = luaA_getopt_number(L, 1, "x", mouse_x);
@@ -440,7 +446,7 @@ luaA_mouse_coords(lua_State *L)
         lua_pop(L, 1);
     }
 
-    if(!mouse_query_pointer_root(&screen, &mouse_x, &mouse_y, &mask))
+    if(!mouse_query_pointer_root(&screen, &mouse_x, &mouse_y, NULL, &mask))
         return 0;
 
     return luaA_mouse_pushstatus(L, mouse_x, mouse_y, mask);
@@ -453,30 +459,39 @@ luaA_mouse_coords(lua_State *L)
  * \lreturn A client or nil.
  */
 static int
-luaA_mouse_client_under_pointer(lua_State *L)
+luaA_mouse_object_under_pointer(lua_State *L)
 {
-    for(int screen = 0;
+    int screen;
-        screen < xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
+    int16_t mouse_x, mouse_y;
-        screen++)
+    xcb_window_t child;
-    {
-        xcb_window_t root = xutil_screen_get(globalconf.connection, screen)->root;
-        xcb_query_pointer_reply_t *query_ptr_r;
-        xcb_query_pointer_cookie_t query_ptr_c = xcb_query_pointer_unchecked(globalconf.connection, root);
-        query_ptr_r = xcb_query_pointer_reply(globalconf.connection, query_ptr_c, NULL);
 
-        if(query_ptr_r)
+    if(!mouse_query_pointer_root(&screen, &mouse_x, &mouse_y, &child, NULL))
+        return 0;
+
+    wibox_t *wibox;
+    client_t *client;
+    if((wibox = wibox_getbywin(child)))
+    {
+        luaA_wibox_userdata_new(L, wibox);
+
+        int16_t x = mouse_x - wibox->sw.geometry.x;
+        int16_t y = mouse_y - wibox->sw.geometry.y;
+
+        widget_t *widget = widget_getbycoords(wibox->position, &wibox->widgets,
+                                              wibox->sw.geometry.width,
+                                              wibox->sw.geometry.height,
+                                              &x, &y);
+
+        if(widget)
         {
-            client_t *c = client_getbywin(query_ptr_r->child);
+            luaA_widget_userdata_new(L, widget);
-            p_delete(&query_ptr_r);
+            return 2;
-            if(c)
-               return luaA_client_userdata_new(L, c);
-            else
-            {
-                lua_pushnil(L);
-                return 1;
-            }
         }
+        return 1;
     }
+    else if((client = client_getbywin(child)))
+        return luaA_client_userdata_new(L, client);
+
     return 0;
 }
 
@@ -485,7 +500,7 @@ const struct luaL_reg awesome_mouse_methods[] =
     { "__index", luaA_mouse_index },
     { "__newindex", luaA_mouse_newindex },
     { "coords", luaA_mouse_coords },
-    { "client_under_pointer", luaA_mouse_client_under_pointer },
+    { "object_under_pointer", luaA_mouse_object_under_pointer },
     { NULL, NULL }
 };
 const struct luaL_reg awesome_mouse_meta[] =

mouse.h

@@ -41,7 +41,7 @@ struct button_t
 
 void button_delete(button_t **);
 
-bool mouse_query_pointer(xcb_window_t, int *, int *, uint16_t *);
+bool mouse_query_pointer(xcb_window_t, int16_t *, int16_t *, xcb_window_t *, uint16_t *);
 int luaA_mouse_pushstatus(lua_State *, int, int, uint16_t);
 
 DO_RCNT(button_t, button, button_delete)

mousegrabber.c

@@ -40,11 +40,11 @@ mousegrabber_grab(xcb_cursor_t cursor)
         screen < xcb_setup_roots_length(xcb_get_setup(globalconf.connection));
         screen++)
     {
-        int x, y;
+        int16_t x, y;
         uint16_t mask;
 
         root = xutil_screen_get(globalconf.connection, screen)->root;
-        if(mouse_query_pointer(root, &x, &y, &mask))
+        if(mouse_query_pointer(root, &x, &y, NULL, &mask))
             break;
     }
 

widget.c

@@ -69,6 +69,50 @@ widget_calculate_offset(int barwidth, int widgetwidth, int offset, int alignment
     return barwidth - offset - widgetwidth;
 }
 
+
+/** Get a widget node from a wibox by coords.
+ * \param Container position.
+ * \param widgets The widget list.
+ * \param width The container width.
+ * \param height The container height.
+ * \param x X coordinate of the widget.
+ * \param y Y coordinate of the widget.
+ * \return A widget.
+ */
+widget_t *
+widget_getbycoords(position_t position, widget_node_array_t *widgets,
+                   int width, int height, int16_t *x, int16_t *y)
+{
+    int tmp;
+
+    /* Need to transform coordinates like it was top/bottom */
+    switch(position)
+    {
+      case Right:
+        tmp = *y;
+        *y = width - *x;
+        *x = tmp;
+        break;
+      case Left:
+        tmp = *y;
+        *y = *x;
+        *x = height - tmp;
+        break;
+      default:
+        break;
+    }
+    for(int i = 0; i < widgets->len; i++)
+    {
+        widget_node_t *w = &widgets->tab[i];
+        if(w->widget->isvisible &&
+           *x >= w->geometry.x && *x < w->geometry.x + w->geometry.width
+           && *y >= w->geometry.y && *y < w->geometry.y + w->geometry.height)
+            return w->widget;
+    }
+
+    return NULL;
+}
+
 /** Convert a Lua table to a list of widget nodet.
  * \param L The Lua VM state.
  * \param widgets The linked list of widget node.

widget.h

@@ -37,6 +37,7 @@ void widget_delete(widget_t **);
 DO_RCNT(widget_t, widget, widget_delete)
 
 int widget_calculate_offset(int, int, int, int);
+widget_t *widget_getbycoords(position_t, widget_node_array_t *, int, int, int16_t *, int16_t *);
 void widget_render(widget_node_array_t *, draw_context_t *, xcb_gcontext_t, xcb_drawable_t, int, orientation_t, int, int, wibox_t *);
 
 int luaA_widget_userdata_new(lua_State *, widget_t *);