awesome/widget.c

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/*
* widget.c - widget managing
*
* Copyright © 2007 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"
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#include "event.h"
extern AwesomeConf globalconf;
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#include "widgetgen.h"
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void
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widget_calculate_alignments(Widget *widget)
{
for(; widget && widget->alignment != AlignFlex; widget = widget->next)
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{
switch(widget->alignment)
{
case AlignCenter:
warn("widgets cannot be center aligned\n");
case AlignAuto:
widget->alignment = AlignLeft;
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break;
default:
break;
}
}
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if(widget)
for(widget = widget->next; widget; widget = widget->next)
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switch(widget->alignment)
{
case AlignFlex:
warn("multiple flex widgets in panel -"
" ignoring flex for all but the first.\n");
widget->alignment = AlignRight;
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break;
case AlignCenter:
warn("widgets cannot be center aligned\n");
case AlignAuto:
widget->alignment = AlignRight;
break;
default:
break;
}
}
int
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widget_calculate_offset(int barwidth, int widgetwidth, int offset, int alignment)
{
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switch(alignment)
{
case AlignLeft:
case AlignFlex:
return offset;
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}
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return barwidth - offset - widgetwidth;
}
static Widget *
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widget_find(char *name, int screen)
{
Widget *widget;
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Statusbar *sb;
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for(sb = globalconf.screens[screen].statusbar; sb; sb = sb->next)
for(widget = sb->widgets; widget; widget = widget->next)
if(a_strcmp(name, widget->name) == 0)
return widget;
return NULL;
}
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static void
widget_common_button_press(Widget *widget, XButtonPressedEvent *ev)
{
Button *b;
for(b = widget->buttons; b; b = b->next)
if(ev->button == b->button && CLEANMASK(ev->state) == b->mod && b->func)
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{
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b->func(widget->statusbar->screen, b->arg);
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break;
}
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}
static void
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widget_common_tell(Widget *widget, char *command __attribute__ ((unused)))
{
warn("%s widget does not accept commands.\n", widget->name);
}
void
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widget_common_new(Widget *widget, Statusbar *statusbar, cfg_t* config)
{
const char *name;
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widget->statusbar = statusbar;
name = cfg_title(config);
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widget->name = a_strdup(name);
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widget->tell = widget_common_tell;
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widget->button_press = widget_common_button_press;
widget->area.x = cfg_getint(config, "x");
widget->area.y = cfg_getint(config, "y");
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widget->user_supplied_x = (widget->area.x != (int) 0xffffffff);
widget->user_supplied_y = (widget->area.y != (int) 0xffffffff);
}
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void
widget_invalidate_cache(int screen, int flags)
{
Statusbar *statusbar;
Widget *widget;
for(statusbar = globalconf.screens[screen].statusbar;
statusbar;
statusbar = statusbar->next)
for(widget = statusbar->widgets; widget; widget = widget->next)
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if(widget->cache.flags & flags)
widget->cache.needs_update = True;
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}
/** Send command to widget
* \param screen Screen ID
* \param arg Widget command. Syntax depends on specific widget.
* \ingroup ui_callback
*/
void
uicb_widget_tell(int screen, char *arg)
{
Widget *widget;
char *p, *command;
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ssize_t len;
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if (!arg)
{
warn("Must specify a widget.\n");
return;
}
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len = a_strlen(arg);
p = strtok(arg, " ");
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if(!p)
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{
warn("Ignoring malformed widget command.\n");
return;
}
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widget = widget_find(p, screen);
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if(!widget)
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{
warn("No such widget: %s\n", p);
return;
}
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if(p + a_strlen(p) < arg + len)
{
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p = p + a_strlen(p) + 1;
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len = a_strlen(p);
command = p_new(char, len + 1);
a_strncpy(command, len + 1, p, len);
widget->tell(widget, command);
p_delete(&command);
}
else
widget->tell(widget, NULL);
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widget->cache.needs_update = True;
return;
}
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