/** View or unview a tag.
* \param L The Lua VM state.
* \param udx The index of the tag on the stack.
* \param view Set visible or not.
*/
static void
tag_view(lua_State *L, int udx, bool view)
{
tag_t *tag = luaA_checkudata(L, udx, &tag_class);
if(tag->selected != view)
{
tag->selected = view;
if(tag->screen)
{
int screen_index = screen_array_indexof(&globalconf.screens, tag->screen);
banning_need_update(tag->screen);
ewmh_update_net_current_desktop(screen_virttophys(screen_index));
if(globalconf.hooks.tags != LUA_REFNIL)
{
lua_pushnumber(globalconf.L, screen_index + 1);
luaA_object_push(globalconf.L, tag);
if(view)
lua_pushliteral(globalconf.L, "select");
else
lua_pushliteral(globalconf.L, "unselect");
luaA_dofunction_from_registry(globalconf.L, globalconf.hooks.tags, 3, 0);
}
}
luaA_object_emit_signal(L, udx, "property::selected", 0);
}
}
/** Mouse library.
* \param L The Lua VM state.
* \return The number of elements pushed on stack.
* \luastack
* \lfield coords Mouse coordinates.
* \lfield screen Mouse screen number.
*/
static int
luaA_mouse_index(lua_State *L)
{
const char *attr = luaL_checkstring(L, 2);
int16_t mouse_x, mouse_y;
screen_t *screen;
/* attr is not "screen"?! */
if (A_STRNEQ(attr, "screen"))
return 0;
if (!mouse_query_pointer_root(&mouse_x, &mouse_y, NULL, NULL))
return 0;
screen = screen_getbycoord(mouse_x, mouse_y);
lua_pushnumber(L, screen_array_indexof(&globalconf.screens, screen) + 1);
return 1;
}
static int
property_handle_xrootpmap_id(uint8_t state,
xcb_window_t window,
xcb_atom_t name,
xcb_get_property_reply_t *reply)
{
if(globalconf.xinerama_is_active)
foreach(w, globalconf.wiboxes)
(*w)->need_update = true;
else
{
int screen = xutil_root2screen(globalconf.connection, window);
foreach(w, globalconf.wiboxes)
if(screen == screen_array_indexof(&globalconf.screens, (*w)->screen))
(*w)->need_update = true;
}
return 0;
}
/** Remove a tag from screen. Tag must be on a screen and have no clients.
* \param tag The tag to remove.
*/
void
tag_remove_from_screen(tag_t *tag)
{
if(!tag->screen)
return;
int screen_index = screen_array_indexof(&globalconf.screens, tag->screen);
int phys_screen = screen_virttophys(screen_index);
tag_array_t *tags = &tag->screen->tags;
for(int i = 0; i < tags->len; i++)
if(tags->tab[i] == tag)
{
tag_array_take(tags, i);
break;
}
/* tag was selected? If so, reban */
if(tag->selected)
banning_need_update(tag->screen);
ewmh_update_net_numbers_of_desktop(phys_screen);
ewmh_update_net_desktop_names(phys_screen);
/* call hook */
if(globalconf.hooks.tags != LUA_REFNIL)
{
lua_pushnumber(globalconf.L, screen_index + 1);
luaA_object_push(globalconf.L, tag);
lua_pushliteral(globalconf.L, "remove");
luaA_dofunction_from_registry(globalconf.L, globalconf.hooks.tags, 3, 0);
}
screen_t *s = tag->screen;
tag->screen = NULL;
luaA_object_push(globalconf.L, tag);
luaA_object_emit_signal(globalconf.L, -1, "property::screen", 0);
screen_emit_signal(globalconf.L, s, "tag::detach", 1);
luaA_object_unref(globalconf.L, tag);
}
/** Append a tag to a screen.
* \param L The Lua VM state.
* \param udx The tag index on the stack.
* \param s The screen.
*/
void
tag_append_to_screen(lua_State *L, int udx, screen_t *s)
{
tag_t *tag = luaA_checkudata(globalconf.L, udx, &tag_class);
/* can't attach a tag twice */
if(tag->screen)
{
lua_remove(L, udx);
return;
}
int screen_index = screen_array_indexof(&globalconf.screens, s);
int phys_screen = screen_virttophys(screen_index);
tag->screen = s;
tag_array_append(&s->tags, luaA_object_ref_class(globalconf.L, udx, &tag_class));
ewmh_update_net_numbers_of_desktop(phys_screen);
ewmh_update_net_desktop_names(phys_screen);
luaA_object_push(globalconf.L, tag);
luaA_object_emit_signal(L, -1, "property::screen", 0);
lua_pop(L, 1);
/* call hook */
if(globalconf.hooks.tags != LUA_REFNIL)
{
lua_pushnumber(globalconf.L, screen_index + 1);
luaA_object_push(globalconf.L, tag);
lua_pushliteral(globalconf.L, "add");
luaA_dofunction_from_registry(globalconf.L, globalconf.hooks.tags, 3, 0);
}
luaA_object_push(globalconf.L, tag);
screen_emit_signal(globalconf.L, s, "tag::attach", 1);
}
/** Retrieve a list of widget geometries using a Lua layout function.
* a table which contains the geometries is then pushed onto the stack
* \param wibox The wibox.
* \return True is everything is ok, false otherwise.
*/
static bool
widget_geometries(wibox_t *wibox)
{
/* get the layout field of the widget table */
if(wibox->widgets_table)
{
/* push wibox */
luaA_object_push(globalconf.L, wibox);
/* push widgets table */
luaA_object_push_item(globalconf.L, -1, wibox->widgets_table);
/* remove wibox */
lua_remove(globalconf.L, -2);
/* get layout field from the table */
lua_getfield(globalconf.L, -1, "layout");
/* remove the widget table */
lua_remove(globalconf.L, -2);
}
else
lua_pushnil(globalconf.L);
/* if the layout field is a function */
if(lua_isfunction(globalconf.L, -1))
{
/* Push 1st argument: wibox geometry */
area_t geometry = wibox->geometry;
geometry.x = 0;
geometry.y = 0;
/* we need to exchange the width and height of the wibox window if it
* it is rotated, so the layout function doesn't need to care about that
*/
if(wibox->orientation != East)
{
int i = geometry.height;
geometry.height = geometry.width;
geometry.width = i;
}
luaA_pusharea(globalconf.L, geometry);
/* Push 2nd argument: widget table */
luaA_object_push(globalconf.L, wibox);
luaA_object_push_item(globalconf.L, -1, wibox->widgets_table);
lua_remove(globalconf.L, -2);
/* Push 3rd argument: wibox screen */
lua_pushnumber(globalconf.L, screen_array_indexof(&globalconf.screens, wibox->screen));
/* Re-push the layout function */
lua_pushvalue(globalconf.L, -4);
/* call the layout function with 3 arguments (wibox geometry, widget
* table, screen) and wait for one result */
if(!luaA_dofunction(globalconf.L, 3, 1))
return false;
/* Remove the left over layout function */
lua_remove(globalconf.L, -2);
}
else
{
/* Remove the "nil function" */
lua_pop(globalconf.L, 1);
/* If no layout function has been specified, we just push a table with
* geometries onto the stack. These geometries are nothing fancy, they
* have x = y = 0 and their height and width set to the widgets demands
* or the wibox size, depending on which is less.
*/
widget_node_array_t *widgets = &wibox->widgets;
widget_node_array_wipe(widgets);
widget_node_array_init(widgets);
/* push wibox */
luaA_object_push(globalconf.L, wibox);
/* push widgets table */
luaA_object_push_item(globalconf.L, -1, wibox->widgets_table);
/* remove wibox */
lua_remove(globalconf.L, -2);
luaA_table2widgets(globalconf.L, widgets);
lua_newtable(globalconf.L);
for(int i = 0; i < widgets->len; i++)
{
lua_pushnumber(globalconf.L, i + 1);
widget_t *widget = widgets->tab[i].widget;
lua_pushnumber(globalconf.L, screen_array_indexof(&globalconf.screens, wibox->screen));
area_t geometry = widget->extents(globalconf.L, widget);
lua_pop(globalconf.L, 1);
geometry.x = geometry.y = 0;
geometry.width = MIN(wibox->geometry.width, geometry.width);
geometry.height = MIN(wibox->geometry.height, geometry.height);
luaA_pusharea(globalconf.L, geometry);
lua_settable(globalconf.L, -3);
}
}
return true;
}
