widget.c

   1 /*
   2  * widget.c - widget managing
   3  *
   4  * Copyright © 2007 Julien Danjou <julien@danjou.info>
   5  * Copyright © 2007 Aldo Cortesi <aldo@nullcube.com>
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License along
  18  * with this program; if not, write to the Free Software Foundation, Inc.,
  19  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  */
  22
  23 #include "util.h"
  24 #include "widget.h"
  25 #include "statusbar.h"
  26 #include "event.h"
  27
  28 extern AwesomeConf globalconf;
  29
  30 const NameFuncLink WidgetList[] =
  31 {
  32     {"taglist", taglist_new},
  33     {"layoutinfo", layoutinfo_new},
  34     {"focustitle", focustitle_new},
  35     {"textbox", textbox_new},
  36     {"iconbox", iconbox_new},
  37     {"netwmicon", netwmicon_new},
  38     {"progressbar", progressbar_new},
  39     {"tasklist", tasklist_new},
  40     {NULL, NULL}
  41 };
  42
  43 void
  44 widget_calculate_alignments(Widget *widget)
  45 {
  46     for(; widget; widget = widget->next)
  47     {
  48         if(widget->alignment == AlignFlex)
  49         {
  50             widget = widget->next;
  51             break;
  52         }
  53         widget->alignment = AlignLeft;
  54     }
  55
  56     if(widget)
  57         for(; widget; widget = widget->next)
  58         {
  59             if (widget->alignment == AlignFlex)
  60                 warn("Multiple flex widgets in panel -"
  61                      " ignoring flex for all but the first.");
  62             widget->alignment = AlignRight;
  63         }
  64 }
  65
  66 int
  67 widget_calculate_offset(int barwidth, int widgetwidth, int offset, int alignment)
  68 {
  69     switch(alignment)
  70     {
  71       case AlignLeft:
  72       case AlignFlex:
  73         return offset;
  74     }
  75     return barwidth - offset - widgetwidth;
  76 }
  77
  78 static Widget *
  79 widget_find(char *name, int screen)
  80 {
  81     Widget *widget;
  82     Statusbar *sb;
  83
  84     for(sb = globalconf.screens[screen].statusbar; sb; sb = sb->next)
  85         for(widget = sb->widgets; widget; widget = widget->next)
  86             if(a_strcmp(name, widget->name) == 0)
  87                 return widget;
  88
  89     return NULL;
  90 }
  91
  92 static void
  93 widget_common_button_press(Widget *widget, XButtonPressedEvent *ev)
  94 {
  95     Button *b;
  96
  97     for(b = widget->buttons; b; b = b->next)
  98         if(ev->button == b->button && CLEANMASK(ev->state) == b->mod && b->func)
  99             b->func(widget->statusbar->screen, b->arg);
 100 }
 101
 102 static void
 103 widget_common_tell(Widget *widget, char *command __attribute__ ((unused)))
 104 {
 105     warn("%s widget does not accept commands.\n", widget->name);
 106 }
 107
 108 void
 109 widget_common_new(Widget *widget, Statusbar *statusbar, cfg_t* config)
 110 {
 111     const char *name;
 112
 113     widget->statusbar = statusbar;
 114     name = cfg_title(config);
 115     widget->name = a_strdup(name);
 116     widget->tell = widget_common_tell;
 117     widget->button_press = widget_common_button_press;
 118 }
 119
 120 /** Send command to widget
 121  * \param screen Screen ID
 122  * \param arg Widget command. Syntax depends on specific widget.
 123  * \ingroup ui_callback
 124  */
 125 void
 126 uicb_widget_tell(int screen, char *arg)
 127 {
 128     Widget *widget;
 129     char *p, *command;
 130     int len;
 131
 132     if (!arg)
 133     {
 134         warn("Must specify a widget.\n");
 135         return;
 136     }
 137
 138     len = strlen(arg);
 139     p = strtok(arg, " ");
 140     if (!p)
 141     {
 142         warn("Ignoring malformed widget command.\n");
 143         return;
 144     }
 145
 146     widget = widget_find(p, screen);
 147     if (!widget)
 148     {
 149         warn("No such widget: %s\n", p);
 150         return;
 151     }
 152
 153     if (p+strlen(p) < arg+len)
 154     {
 155         p = p + strlen(p) + 1;
 156         command = p_new(char, strlen(p)+1);
 157         strncpy(command, p, strlen(p));
 158         widget->tell(widget, command);
 159         p_delete(&command);
 160     }
 161     else
 162         widget->tell(widget, NULL);
 163
 164     statusbar_draw_all(screen);
 165     return;
 166 }
 167
 168 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80