indicator-lunar-calendar.js

   1 #!/usr/bin/env node
   2 /*
   3  * indicator-lunar-calendar - shows lunar calendar information
   4  * Copyright (c) 2016 Adrian I Lam <adrianiainlam@gmail.com>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice shall be included in
  14  * all copies or substantial portions of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  19  * THE AUTHOR OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  20  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  21  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  22  * IN THE SOFTWARE.
  23  */
  24
  25 /* import dependencies */
  26 var GNode = require('node-gtk');
  27 var Gtk = GNode.importNS('Gtk');
  28 var AppIndicator3 = GNode.importNS('AppIndicator3');
  29 var CronJob = require('cron').CronJob;
  30 var LunarCalendar = require('lunar-calendar-zh');
  31
  32 /* setup indicator object */
  33 GNode.startLoop();
  34 Gtk.init(null);
  35 var indicator = AppIndicator3.Indicator.new(
  36     "lunar-indicator",
  37     __dirname + '/鼠.svg',
  38     AppIndicator3.IndicatorCategory.APPLICATION_STATUS
  39 );
  40 indicator.set_status(AppIndicator3.IndicatorStatus.ACTIVE);
  41 var menu = new Gtk.Menu();
  42 var item = new Gtk.MenuItem();
  43 menu.append(item);
  44 indicator.set_menu(menu);
  45 menu.show_all();
  46
  47 function update_indicator() {
  48     /* get current time at UTC+8, add 1 to date if after 23:00 (子時) */
  49     var now = new Date(new Date().getTime() + 8 * 3600 * 1000);
  50     var hour = now.getUTCHours();
  51     if(hour >= 23) { // 子時 of the next day
  52         now = new Date(now.getTime() + 24 * 3600 * 1000);
  53     }
  54     var year  = now.getUTCFullYear();
  55     var month = now.getUTCMonth() + 1;
  56     var day   = now.getUTCDate();
  57
  58     /* obtain date/time in lunar calendar */
  59     var lunar = LunarCalendar.solarToLunar(year, month, day);
  60     lunar.hour = '子丑寅卯辰巳午未申酉戌亥'[Math.floor((hour + 1) % 24 / 2)];
  61
  62     /* output formatting */
  63     var compact_date = lunar.lunarMonthName + lunar.lunarDayName;
  64     var long_date = lunar.GanZhiYear + '年（' + lunar.zodiac + '年）\n' +
  65                     lunar.lunarMonthName + lunar.lunarDayName;
  66     if(lunar.term) { // add solar term (節氣) to output if at solar term
  67         compact_date += '　' + lunar.term;
  68         long_date += '　' + lunar.term;
  69     }
  70     long_date += '\n' + lunar.hour + '時';
  71
  72     /* output to indicator */
  73     indicator.set_icon(__dirname + '/' + lunar.zodiac + '.svg');
  74     indicator.set_label(compact_date, '');
  75     item.set_label(long_date);
  76 }
  77
  78 var job = new CronJob({
  79     cronTime: '0 * * * *', // every hour
  80     onTick: update_indicator,
  81     start: true
  82 });
  83
  84 update_indicator();
  85 Gtk.main();