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     {NULL, NULL}
  40 };
  41
  42 void
  43 widget_calculate_alignments(Widget *widget)
  44 {
  45     for(; widget; widget = widget->next)
  46     {
  47         if(widget->alignment == AlignFlex)
  48         {
  49             widget = widget->next;
  50             break;
  51         }
  52         widget->alignment = AlignLeft;
  53     }
  54
  55     if(widget)
  56         for(; widget; widget = widget->next)
  57         {
  58             if (widget->alignment == AlignFlex)
  59                 warn("Multiple flex widgets in panel -"
  60                      " ignoring flex for all but the first.");
  61             widget->alignment = AlignRight;
  62         }
  63 }
  64
  65 int
  66 widget_calculate_offset(int barwidth, int widgetwidth, int offset, int alignment)
  67 {
  68     if (alignment == AlignLeft || alignment == AlignFlex)
  69         return offset;
  70     return barwidth - offset - widgetwidth;
  71 }
  72
  73 static Widget *
  74 widget_find(char *name, int screen)
  75 {
  76     Widget *widget;
  77     Statusbar *sb;
  78
  79     for(sb = globalconf.screens[screen].statusbar; sb; sb = sb->next)
  80         for(widget = sb->widgets; widget; widget = widget->next)
  81             if(a_strcmp(name, widget->name) == 0)
  82                 return widget;
  83
  84     return NULL;
  85 }
  86
  87 static void
  88 widget_common_button_press(Widget *widget, XButtonPressedEvent *ev)
  89 {
  90     Button *b;
  91
  92     for(b = widget->buttons; b; b = b->next)
  93         if(ev->button == b->button && CLEANMASK(ev->state) == b->mod && b->func)
  94             b->func(widget->statusbar->screen, b->arg);
  95 }
  96
  97 static void
  98 widget_common_tell(Widget *widget, char *command __attribute__ ((unused)))
  99 {
 100     warn("%s widget does not accept commands.\n", widget->name);
 101 }
 102
 103 void
 104 widget_common_new(Widget *widget, Statusbar *statusbar, cfg_t* config)
 105 {
 106     const char *name;
 107
 108     widget->statusbar = statusbar;
 109     name = cfg_title(config);
 110     widget->name = a_strdup(name);
 111     widget->tell = widget_common_tell;
 112     widget->button_press = widget_common_button_press;
 113 }
 114
 115 /** Send command to widget
 116  * \param screen Screen ID
 117  * \param arg Widget command. Syntax depends on specific widget.
 118  * \ingroup ui_callback
 119  */
 120 void
 121 uicb_widget_tell(int screen, char *arg)
 122 {
 123     Widget *widget;
 124     char *p, *command;
 125     int len;
 126
 127     if (!arg)
 128     {
 129         warn("Must specify a widget.\n");
 130         return;
 131     }
 132
 133     len = strlen(arg);
 134     p = strtok(arg, " ");
 135     if (!p)
 136     {
 137         warn("Ignoring malformed widget command.\n");
 138         return;
 139     }
 140
 141     widget = widget_find(p, screen);
 142     if (!widget)
 143     {
 144         warn("No such widget: %s\n", p);
 145         return;
 146     }
 147
 148     if (p+strlen(p) < arg+len)
 149     {
 150         p = p + strlen(p) + 1;
 151         command = p_new(char, strlen(p)+1);
 152         strncpy(command, p, strlen(p));
 153         widget->tell(widget, command);
 154         p_delete(&command);
 155     }
 156     else
 157         widget->tell(widget, NULL);
 158
 159     statusbar_draw_all(screen);
 160     return;
 161 }
 162
 163 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80