awesome/widget.c

391 lines
11 KiB
C

/*
* widget.c - widget managing
*
* Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
* Copyright © 2007 Aldo Cortesi <aldo@nullcube.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
*/
#include "widget.h"
#include "statusbar.h"
#include "event.h"
#include "lua.h"
extern awesome_t globalconf;
#include "widgetgen.h"
/** Compute offset for drawing the first pixel of a widget.
* \param barwidth The statusbar width.
* \param widgetwidth The widget width.
* \param alignment The widget alignment on statusbar.
* \return The x coordinate to draw at.
*/
int
widget_calculate_offset(int barwidth, int widgetwidth, int offset, int alignment)
{
switch(alignment)
{
case AlignLeft:
case AlignFlex:
return offset;
}
return barwidth - offset - widgetwidth;
}
/** Find a widget on a screen by its name.
* \param name The widget name.
* \return A widget pointer.
*/
widget_t *
widget_getbyname(const char *name)
{
widget_node_t *widget;
statusbar_t *sb;
int screen;
for(screen = 0; screen < globalconf.screens_info->nscreen; screen++)
for(sb = globalconf.screens[screen].statusbar; sb; sb = sb->next)
for(widget = sb->widgets; widget; widget = widget->next)
if(!a_strcmp(name, widget->widget->name))
return widget->widget;
return NULL;
}
/** Common function for button press event on widget.
* It will look into configuration to find the callback function to call.
* \param w The widget node.
* \param statusbar The statusbar.
* \param ev The button press event the widget received.
*/
static void
widget_common_button_press(widget_node_t *w,
statusbar_t *statusbar __attribute__ ((unused)),
xcb_button_press_event_t *ev)
{
button_t *b;
for(b = w->widget->buttons; b; b = b->next)
if(ev->detail == b->button && CLEANMASK(ev->state) == b->mod && b->fct)
luaA_dofunction(globalconf.L, b->fct, 0);
}
/** Common tell function for widget, which only warn user that widget
* cannot be told anything.
* \param widget The widget.
* \param new_value Unused argument.
* \return The status of the command, which is always an error in this case.
*/
static widget_tell_status_t
widget_common_tell(widget_t *widget,
const char *property __attribute__ ((unused)),
const char *new_value __attribute__ ((unused)))
{
warn("%s widget does not accept commands.", widget->name);
return WIDGET_ERROR_CUSTOM;
}
/** Common function for creating a widget.
* \param widget The allocated widget.
*/
void
widget_common_new(widget_t *widget)
{
widget->align = AlignLeft;
widget->tell = widget_common_tell;
widget->button_press = widget_common_button_press;
}
/** Invalidate widgets which should be refresh upon
* external modifications. widget_t who watch flags will
* be set to be refreshed.
* \param screen Virtual screen number.
* \param flags Cache flags to invalidate.
*/
void
widget_invalidate_cache(int screen, int flags)
{
statusbar_t *statusbar;
widget_node_t *widget;
for(statusbar = globalconf.screens[screen].statusbar;
statusbar;
statusbar = statusbar->next)
for(widget = statusbar->widgets; widget; widget = widget->next)
if(widget->widget->cache_flags & flags)
{
statusbar->need_update = true;
break;
}
}
void
widget_invalidate_statusbar_bywidget(widget_t *widget)
{
int screen;
statusbar_t *statusbar;
widget_node_t *witer;
for(screen = 0; screen < globalconf.screens_info->nscreen; screen++)
for(statusbar = globalconf.screens[screen].statusbar;
statusbar;
statusbar = statusbar->next)
for(witer = statusbar->widgets; witer; witer = witer->next)
if(witer->widget == widget)
{
statusbar->need_update = true;
break;
}
}
static int
luaA_widget_userdata_new(widget_t *widget)
{
widget_t **w;
w = lua_newuserdata(globalconf.L, sizeof(widget_t *));
*w = widget;
widget_ref(w);
return luaA_settype(globalconf.L, "widget");
}
static int
luaA_widget_new(lua_State *L)
{
const char *type;
widget_t *w;
widget_constructor_t *wc;
alignment_t align;
luaA_checktable(L, 1);
align = draw_align_get_from_str(luaA_getopt_string(L, 1, "align", "left"));
type = luaA_getopt_string(L, 1, "type", NULL);
if((wc = name_func_lookup(type, WidgetList)))
w = wc(align);
else
luaL_error(L, "unkown widget type: %s", type);
/* Set visible by default. */
w->isvisible = true;
w->name = luaA_name_init(L);
return luaA_widget_userdata_new(w);
}
static int
luaA_widget_mouse(lua_State *L)
{
size_t i, len;
/* arg 1 is object */
widget_t **widget = luaL_checkudata(L, 1, "widget");
int b;
button_t *button;
/* arg 2 is modkey table */
luaA_checktable(L, 2);
/* arg 3 is mouse button */
b = luaL_checknumber(L, 3);
/* arg 4 is cmd to run */
luaA_checkfunction(L, 4);
button = p_new(button_t, 1);
button->button = xutil_button_fromint(b);
button->fct = luaL_ref(L, LUA_REGISTRYINDEX);
len = lua_objlen(L, 2);
for(i = 1; i <= len; i++)
{
lua_rawgeti(L, 2, i);
button->mod |= xutil_keymask_fromstr(luaL_checkstring(L, -1));
}
button_list_push(&(*widget)->buttons, button);
return 0;
}
void
widget_tell_managestatus(widget_t *widget, widget_tell_status_t status, const char *property)
{
switch(status)
{
case WIDGET_ERROR:
warn("error changing property %s of widget %s",
property, widget->name);
break;
case WIDGET_ERROR_NOVALUE:
warn("error changing property %s of widget %s, no value given",
property, widget->name);
break;
case WIDGET_ERROR_FORMAT_FONT:
warn("error changing property %s of widget %s, must be a valid font",
property, widget->name);
break;
case WIDGET_ERROR_FORMAT_COLOR:
warn("error changing property %s of widget %s, must be a valid color",
property, widget->name);
break;
case WIDGET_ERROR_FORMAT_SECTION:
warn("error changing property %s of widget %s, section/title not found",
property, widget->name);
break;
case WIDGET_NOERROR:
widget_invalidate_statusbar_bywidget(widget);
break;
case WIDGET_ERROR_CUSTOM:
break;
}
}
static int
luaA_widget_set(lua_State *L)
{
widget_t **widget = luaL_checkudata(L, 1, "widget");
const char *property, *value;
widget_tell_status_t status;
property = luaL_checkstring(L, 2);
value = luaL_checkstring(L, 3);
status = (*widget)->tell(*widget, property, value);
widget_tell_managestatus(*widget, status, property);
return 0;
}
static int
luaA_widget_gc(lua_State *L)
{
widget_t **widget = luaL_checkudata(L, 1, "widget");
widget_unref(widget);
return 0;
}
static int
luaA_widget_tostring(lua_State *L)
{
widget_t **p = luaL_checkudata(L, 1, "widget");
lua_pushfstring(L, "[widget udata(%p) name(%s)]", *p, (*p)->name);
return 1;
}
static int
luaA_widget_eq(lua_State *L)
{
widget_t **t1 = luaL_checkudata(L, 1, "widget");
widget_t **t2 = luaL_checkudata(L, 2, "widget");
lua_pushboolean(L, (*t1 == *t2));
return 1;
}
static int
luaA_widget_get(lua_State *L)
{
statusbar_t *sb;
widget_node_t *widget;
int i = 1, screen;
bool add = true;
widget_node_t *wlist = NULL, *witer;
lua_newtable(L);
for(screen = 0; screen < globalconf.screens_info->nscreen; screen++)
for(sb = globalconf.screens[screen].statusbar; sb; sb = sb->next)
for(widget = sb->widgets; widget; widget = widget->next)
{
for(witer = wlist; witer; witer = witer->next)
if(witer->widget == widget->widget)
{
add = false;
break;
}
if(add)
{
witer = p_new(widget_node_t, 1);
widget_node_list_push(&wlist, witer);
luaA_widget_userdata_new(witer->widget);
/* ref again for the list */
widget_ref(&widget->widget);
lua_rawseti(L, -2, i++);
}
add = true;
}
widget_node_list_wipe(&wlist);
return 1;
}
static int
luaA_widget_name_set(lua_State *L)
{
widget_t **widget = luaL_checkudata(L, 1, "widget");
const char *name = luaL_checkstring(L, 2);
p_delete(&(*widget)->name);
(*widget)->name = a_strdup(name);
return 0;
}
static int
luaA_widget_name_get(lua_State *L)
{
widget_t **widget = luaL_checkudata(L, 1, "widget");
lua_pushstring(L, (*widget)->name);
return 1;
}
static int
luaA_widget_visible_set(lua_State *L)
{
widget_t **widget = luaL_checkudata(L, 1, "widget");
(*widget)->isvisible = luaA_checkboolean(L, 2);
widget_invalidate_statusbar_bywidget(*widget);
return 0;
}
static int
luaA_widget_visible_get(lua_State *L)
{
widget_t **widget = luaL_checkudata(L, 1, "widget");
lua_pushboolean(L, (*widget)->isvisible);
return 1;
}
const struct luaL_reg awesome_widget_methods[] =
{
{ "new", luaA_widget_new },
{ "get", luaA_widget_get },
{ NULL, NULL }
};
const struct luaL_reg awesome_widget_meta[] =
{
{ "mouse", luaA_widget_mouse },
{ "set", luaA_widget_set },
{ "name_set", luaA_widget_name_set },
{ "name_get", luaA_widget_name_get },
{ "visible_set", luaA_widget_visible_set },
{ "visible_get", luaA_widget_visible_get },
{ "__gc", luaA_widget_gc },
{ "__eq", luaA_widget_eq },
{ "__tostring", luaA_widget_tostring },
{ NULL, NULL }
};
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80