awesome/statusbar.c

612 lines
19 KiB
C

/*
* statusbar.c - statusbar functions
*
* Copyright © 2007-2008 Julien Danjou <julien@danjou.info>
*
* 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 <stdio.h>
#include <math.h>
#include <pthread.h>
#include <xcb/xcb.h>
#include <xcb/xcb_aux.h>
#include "statusbar.h"
#include "screen.h"
#include "tag.h"
#include "widget.h"
#include "window.h"
extern awesome_t globalconf;
extern bool running;
/** Draw a statusbar.
* \param statusbar The statusbar to draw.
*/
static void
statusbar_draw(statusbar_t *statusbar)
{
xcb_window_t rootwin;
xcb_pixmap_t rootpix;
widget_node_t *w;
int left = 0, right = 0;
char *data;
xcb_get_property_reply_t *prop_r;
xcb_get_property_cookie_t prop_c;
area_t rectangle = { 0, 0, 0, 0, NULL, NULL };
xcb_atom_t rootpix_atom, pixmap_atom;
xutil_intern_atom_request_t rootpix_atom_req, pixmap_atom_req;
statusbar->need_update.value = false;
if(!statusbar->position)
return;
/* Send requests needed for transparency */
if(statusbar->colors.bg.alpha != 0xffff)
{
pixmap_atom_req = xutil_intern_atom(globalconf.connection, &globalconf.atoms, "PIXMAP");
rootpix_atom_req = xutil_intern_atom(globalconf.connection, &globalconf.atoms, "_XROOTPMAP_ID");
}
rectangle.width = statusbar->width;
rectangle.height = statusbar->height;
if(statusbar->colors.bg.alpha != 0xffff)
{
rootwin = xcb_aux_get_screen(globalconf.connection, statusbar->phys_screen)->root;
pixmap_atom = xutil_intern_atom_reply(globalconf.connection, &globalconf.atoms, pixmap_atom_req);
rootpix_atom = xutil_intern_atom_reply(globalconf.connection, &globalconf.atoms, rootpix_atom_req);
prop_c = xcb_get_property_unchecked(globalconf.connection, false, rootwin, rootpix_atom,
pixmap_atom, 0, 1);
if((prop_r = xcb_get_property_reply(globalconf.connection, prop_c, NULL)))
{
if((data = xcb_get_property_value(prop_r)))
{
rootpix = *(xcb_pixmap_t *) data;
xcb_copy_area(globalconf.connection, rootpix,
statusbar->sw->drawable, statusbar->sw->gc,
statusbar->sw->geometry.x, statusbar->sw->geometry.y,
0, 0,
statusbar->sw->geometry.width,
statusbar->sw->geometry.height);
}
p_delete(&prop_r);
}
}
draw_rectangle(statusbar->ctx, rectangle, 1.0, true,
statusbar->colors.bg);
for(w = statusbar->widgets; w; w = w->next)
if(w->widget->isvisible && w->widget->align == AlignLeft)
left += w->widget->draw(w, statusbar, left, (left + right));
/* renders right widget from last to first */
for(w = *widget_node_list_last(&statusbar->widgets); w; w = w->prev)
if(w->widget->isvisible && w->widget->align == AlignRight)
right += w->widget->draw(w, statusbar, right, (left + right));
for(w = statusbar->widgets; w; w = w->next)
if(w->widget->isvisible && w->widget->align == AlignFlex)
left += w->widget->draw(w, statusbar, left, (left + right));
switch(statusbar->position)
{
case Right:
draw_rotate(statusbar->ctx, statusbar->sw->drawable,
statusbar->ctx->height, statusbar->ctx->width,
M_PI_2, statusbar->height, 0);
break;
case Left:
draw_rotate(statusbar->ctx, statusbar->sw->drawable,
statusbar->ctx->height, statusbar->ctx->width,
- M_PI_2, 0, statusbar->width);
break;
default:
break;
}
simplewindow_refresh_drawable(statusbar->sw);
xcb_aux_sync(globalconf.connection);
}
/** Statusbar thread main function.
* \param p A pointer to a statusbar_t.
* \return Return NULL.
*/
static void *
statusbar_refresh(void *p)
{
statusbar_t *statusbar = (statusbar_t *) p;
while(running)
{
pthread_mutex_lock(&statusbar->need_update.lock);
while(!statusbar->need_update.value)
pthread_cond_wait(&statusbar->need_update.cond, &statusbar->need_update.lock);
statusbar_draw(statusbar);
pthread_mutex_unlock(&statusbar->need_update.lock);
}
return NULL;
}
/** Update the statusbar position. It deletes every statusbar resources and
* create them back.
* \param statusbar The statusbar.
* \param position The new position.
*/
static void
statusbar_position_update(statusbar_t *statusbar, position_t position)
{
statusbar_t *sb;
area_t area;
xcb_drawable_t dw;
xcb_screen_t *s = NULL;
bool ignore = false;
globalconf.screens[statusbar->screen].need_arrange = true;
/* Lock the update thread.
* We will reinit every stuff so, it better do nothing at this moment. */
pthread_mutex_lock(&statusbar->need_update.lock);
simplewindow_delete(&statusbar->sw);
draw_context_delete(&statusbar->ctx);
if((statusbar->position = position) == Off)
{
pthread_mutex_unlock(&statusbar->need_update.lock);
return;
}
area = screen_get_area(statusbar->screen,
NULL,
&globalconf.screens[statusbar->screen].padding);
/* Top and Bottom statusbar_t have prio */
for(sb = globalconf.screens[statusbar->screen].statusbar; sb; sb = sb->next)
{
/* Ignore every statusbar after me that is in the same position */
if(statusbar == sb)
{
ignore = true;
continue;
}
else if(ignore && statusbar->position == sb->position)
continue;
switch(sb->position)
{
case Left:
switch(statusbar->position)
{
case Left:
area.x += statusbar->height;
break;
default:
break;
}
break;
case Right:
switch(statusbar->position)
{
case Right:
area.x -= statusbar->height;
break;
default:
break;
}
break;
case Top:
switch(statusbar->position)
{
case Top:
area.y += sb->height;
break;
case Left:
case Right:
area.height -= sb->height;
area.y += sb->height;
break;
default:
break;
}
break;
case Bottom:
switch(statusbar->position)
{
case Bottom:
area.y -= sb->height;
break;
case Left:
case Right:
area.height -= sb->height;
break;
default:
break;
}
break;
default:
break;
}
}
switch(statusbar->position)
{
case Right:
case Left:
if(statusbar->width <= 0)
statusbar->width = area.height;
statusbar->sw =
simplewindow_new(globalconf.connection, statusbar->phys_screen, 0, 0,
statusbar->height, statusbar->width, 0);
s = xcb_aux_get_screen(globalconf.connection, statusbar->phys_screen);
/* we need a new pixmap this way [ ] to render */
dw = xcb_generate_id(globalconf.connection);
xcb_create_pixmap(globalconf.connection,
s->root_depth, dw, s->root,
statusbar->width, statusbar->height);
statusbar->ctx = draw_context_new(globalconf.connection,
statusbar->phys_screen,
statusbar->width,
statusbar->height,
dw);
break;
default:
if(statusbar->width <= 0)
statusbar->width = area.width;
statusbar->sw =
simplewindow_new(globalconf.connection, statusbar->phys_screen, 0, 0,
statusbar->width, statusbar->height, 0);
statusbar->ctx = draw_context_new(globalconf.connection,
statusbar->phys_screen,
statusbar->width,
statusbar->height,
statusbar->sw->drawable);
break;
}
switch(statusbar->position)
{
default:
switch(statusbar->align)
{
default:
simplewindow_move(statusbar->sw, area.x, area.y);
break;
case AlignRight:
simplewindow_move(statusbar->sw,
area.x + area.width - statusbar->width, area.y);
break;
case AlignCenter:
simplewindow_move(statusbar->sw,
area.x + (area.width - statusbar->width) / 2, area.y);
break;
}
break;
case Bottom:
switch(statusbar->align)
{
default:
simplewindow_move(statusbar->sw,
area.x, (area.y + area.height) - statusbar->height);
break;
case AlignRight:
simplewindow_move(statusbar->sw,
area.x + area.width - statusbar->width,
(area.y + area.height) - statusbar->height);
break;
case AlignCenter:
simplewindow_move(statusbar->sw,
area.x + (area.width - statusbar->width) / 2,
(area.y + area.height) - statusbar->height);
break;
}
break;
case Left:
switch(statusbar->align)
{
default:
simplewindow_move(statusbar->sw, area.x,
(area.y + area.height) - statusbar->sw->geometry.height);
break;
case AlignRight:
simplewindow_move(statusbar->sw, area.x, area.y);
break;
case AlignCenter:
simplewindow_move(statusbar->sw, area.x, (area.y + area.height - statusbar->width) / 2);
}
break;
case Right:
switch(statusbar->align)
{
default:
simplewindow_move(statusbar->sw, area.x + area.width - statusbar->height, area.y);
break;
case AlignRight:
simplewindow_move(statusbar->sw, area.x + area.width - statusbar->height,
area.y + area.height - statusbar->width);
break;
case AlignCenter:
simplewindow_move(statusbar->sw, area.x + area.width - statusbar->height,
(area.y + area.height - statusbar->width) / 2);
break;
}
break;
}
xcb_map_window(globalconf.connection, statusbar->sw->window);
/* Set need update, and release everything out! */
statusbar->need_update.value = true;
pthread_mutex_unlock(&statusbar->need_update.lock);
pthread_cond_broadcast(&statusbar->need_update.cond);
}
/** Update the need_update attribute of a statusbar to true.
* \param statusbar The statusbar to flag.
*/
void
statusbar_needupdate(statusbar_t *statusbar)
{
pthread_mutex_lock(&statusbar->need_update.lock);
statusbar->need_update.value = true;
pthread_mutex_unlock(&statusbar->need_update.lock);
pthread_cond_broadcast(&statusbar->need_update.cond);
}
/** Check for statusbar equality.
* \param A statusbar.
* \return True if statusbar are equals, false otherwise.
*/
static int
luaA_statusbar_eq(lua_State *L)
{
statusbar_t **t1 = luaL_checkudata(L, 1, "statusbar");
statusbar_t **t2 = luaL_checkudata(L, 2, "statusbar");
lua_pushboolean(L, (*t1 == *t2));
return 1;
}
/** Set the statusbar position.
* \param A position: left, right, top, bottom or off.
*/
static int
luaA_statusbar_position_set(lua_State *L)
{
statusbar_t *s, **sb = luaL_checkudata(L, 1, "statusbar");
const char *pos = luaL_checkstring(L, 2);
position_t position = position_get_from_str(pos);
if(position != (*sb)->position)
{
(*sb)->position = position;
for(s = globalconf.screens[(*sb)->screen].statusbar; s; s = s->next)
statusbar_position_update(s, s->position);
}
return 0;
}
/** Get the statusbar position.
* \return The statusbar position.
*/
static int
luaA_statusbar_position_get(lua_State *L)
{
statusbar_t **sb = luaL_checkudata(L, 1, "statusbar");
lua_pushstring(L, position_to_str((*sb)->position));
return 1;
}
/** Set the statusbar alignment on screen.
* \param An alignment: right, left or center.
*/
static int
luaA_statusbar_align_set(lua_State *L)
{
statusbar_t **sb = luaL_checkudata(L, 1, "statusbar");
const char *al = luaL_checkstring(L, 2);
alignment_t align = draw_align_get_from_str(al);
(*sb)->align = align;
statusbar_position_update(*sb, (*sb)->position);
return 0;
}
/** Convert a statusbar to a printable string.
*/
static int
luaA_statusbar_tostring(lua_State *L)
{
statusbar_t **p = luaL_checkudata(L, 1, "statusbar");
lua_pushfstring(L, "[statusbar udata(%p) name(%s)]", *p, (*p)->name);
return 1;
}
/** Add a widget to a statusbar.
* \param A widget.
*/
static int
luaA_statusbar_widget_add(lua_State *L)
{
statusbar_t **sb = luaL_checkudata(L, 1, "statusbar");
widget_t **widget = luaL_checkudata(L, 2, "widget");
widget_node_t *w = p_new(widget_node_t, 1);
statusbar_needupdate(*sb);
w->widget = *widget;
widget_node_list_append(&(*sb)->widgets, w);
widget_ref(widget);
return 0;
}
/** Add the statusbar on a screen.
* \param A screen number.
*/
static int
luaA_statusbar_add(lua_State *L)
{
statusbar_t *s, **sb = luaL_checkudata(L, 1, "statusbar");
int i, screen = luaL_checknumber(L, 2) - 1;
luaA_checkscreen(screen);
/* Check for uniq name and id. */
for(i = 0; i < globalconf.screens_info->nscreen; i++)
for(s = globalconf.screens[i].statusbar; s; s = s->next)
{
if(s == *sb)
luaL_error(L, "this statusbar is already on screen %d",
s->screen + 1);
if(!a_strcmp(s->name, (*sb)->name))
luaL_error(L, "a statusbar with that name is already on screen %d\n",
s->screen + 1);
}
(*sb)->screen = screen;
(*sb)->phys_screen = screen_virttophys(screen);
/* Initialize thread stuffs before any position update, since it will
* set a need_update and so lock */
pthread_cond_init(&(*sb)->need_update.cond, NULL);
pthread_mutex_init(&(*sb)->need_update.lock, NULL);
statusbar_list_append(&globalconf.screens[screen].statusbar, *sb);
statusbar_ref(sb);
/* All the other statusbar and ourselves need to be repositionned */
for(s = globalconf.screens[screen].statusbar; s; s = s->next)
statusbar_position_update(s, s->position);
/* Start the thread */
if(pthread_create(&(*sb)->tid, NULL, statusbar_refresh, *sb))
perror("unable to create thread");
return 0;
}
/** Remove the statusbar its screen.
*/
static int
luaA_statusbar_remove(lua_State *L)
{
statusbar_t *s, **sb = luaL_checkudata(L, 1, "statusbar");
int i;
for(i = 0; i < globalconf.screens_info->nscreen; i++)
for(s = globalconf.screens[i].statusbar; s; s = s->next)
if(s == *sb)
{
statusbar_position_update(*sb, Off);
statusbar_list_detach(&globalconf.screens[i].statusbar, *sb);
statusbar_unref(sb);
globalconf.screens[i].need_arrange = true;
return 0;
}
luaL_error(L, "unable to remove statusbar: not on any screen");
return 0;
}
/** Create a new statusbar.
* \param A table with at least a name attribute. Optionnaly defined values are:
* position, align, fg, bg, width and height.
* \return A brand new statusbar.
*/
static int
luaA_statusbar_new(lua_State *L)
{
statusbar_t **sb = lua_newuserdata(L, sizeof(statusbar_t *));
int objpos = lua_gettop(L);
const char *color;
luaA_checktable(L, 1);
*sb = p_new(statusbar_t, 1);
(*sb)->name = luaA_name_init(L);
lua_getfield(L, 1, "fg");
if((color = luaL_optstring(L, -1, NULL)))
xcolor_new(globalconf.connection, globalconf.default_screen,
color, &(*sb)->colors.fg);
else
(*sb)->colors.fg = globalconf.colors.fg;
lua_getfield(L, 1, "bg");
if((color = luaL_optstring(L, -1, NULL)))
xcolor_new(globalconf.connection, globalconf.default_screen,
color, &(*sb)->colors.bg);
else
(*sb)->colors.bg = globalconf.colors.bg;
(*sb)->align = draw_align_get_from_str(luaA_getopt_string(L, 1, "align", "left"));
(*sb)->width = luaA_getopt_number(L, 1, "width", 0);
(*sb)->height = luaA_getopt_number(L, 1, "height", 0);
if((*sb)->height <= 0)
/* 1.5 as default factor, it fits nice but no one knows why */
(*sb)->height = 1.5 * globalconf.font->height;
(*sb)->position = position_get_from_str(luaA_getopt_string(L, 1, "position", "top"));
statusbar_ref(sb);
lua_pushvalue(L, objpos);
return luaA_settype(L, "statusbar");
}
/** Handle statusbar garbage collection.
*/
static int
luaA_statusbar_gc(lua_State *L)
{
statusbar_t **sb = luaL_checkudata(L, 1, "statusbar");
statusbar_unref(sb);
return 0;
}
const struct luaL_reg awesome_statusbar_methods[] =
{
{ "new", luaA_statusbar_new },
{ NULL, NULL }
};
const struct luaL_reg awesome_statusbar_meta[] =
{
{ "widget_add", luaA_statusbar_widget_add },
{ "position_set", luaA_statusbar_position_set },
{ "position_get", luaA_statusbar_position_get },
{ "align_set", luaA_statusbar_align_set },
{ "add", luaA_statusbar_add },
{ "remove", luaA_statusbar_remove },
{ "__gc", luaA_statusbar_gc },
{ "__eq", luaA_statusbar_eq },
{ "__tostring", luaA_statusbar_tostring },
{ NULL, NULL },
};
// vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80