add experimental video widget. fix 16 colors in _attr.

lib/program.js

@@ -2549,12 +2549,14 @@ Program.prototype._attr = function(param, val) {
             if (color < 8) {
               color += 30;
             } else if (color < 16) {
+              color -= 8;
               color += 90;
             }
           } else if (m[2] === 'bg') {
             if (color < 8) {
               color += 40;
             } else if (color < 16) {
+              color -= 8;
               color += 100;
             }
           }

lib/widget.js

@@ -37,7 +37,8 @@ widget.classes = [
   'Terminal',
   'Image',
   'Layout',
-  'PNG'
+  'PNG',
+  'Video'
 ];
 
 widget.classes.forEach(function(name) {

lib/widgets/terminal.js

@@ -197,6 +197,10 @@ Terminal.prototype.bootstrap = function() {
     self.term.resize(self.width - self.iwidth, self.height - self.iheight);
   });
 
+  this.on('destroy', function() {
+    self.kill();
+  });
+
   if (this.handler) {
     return;
   }
@@ -206,12 +210,16 @@ Terminal.prototype.bootstrap = function() {
     cols: this.width - this.iwidth,
     rows: this.height - this.iheight,
     cwd: process.env.HOME,
-    env: process.env
+    env: this.options.env || process.env
   });
 
   this.on('resize', function() {
     nextTick(function() {
-      self.pty.resize(self.width - self.iwidth, self.height - self.iheight);
+      try {
+        self.pty.resize(self.width - self.iwidth, self.height - self.iheight);
+      } catch (e) {
+        ;
+      }
     });
   });
 
@@ -379,6 +387,14 @@ Terminal.prototype.screenshot = function(xi, xl, yi, yl) {
   return this.screen.screenshot(xi, xl, yi, yl, this.term);
 };
 
+Terminal.prototype.kill = function() {
+  if (this.pty) {
+    this.pty.destroy();
+    this.pty.kill();
+  }
+  this.term.write('\x1b[H\x1b[2J');
+};
+
 /**
  * Expose
  */

lib/widgets/video.js

@@ -0,0 +1,122 @@
+/**
+ * video.js - video element for blessed
+ * Copyright (c) 2013-2015, Christopher Jeffrey and contributors (MIT License).
+ * https://github.com/chjj/blessed
+ */
+
+/**
+ * Modules
+ */
+
+var cp = require('child_process');
+
+var nextTick = global.setImmediate || process.nextTick.bind(process);
+
+var helpers = require('../helpers');
+
+var Node = require('./node');
+var Box = require('./box');
+var Terminal = require('./terminal');
+
+/**
+ * Video
+ */
+
+function Video(options) {
+  var self = this
+    , shell
+    , args;
+
+  if (!(this instanceof Node)) {
+    return new Video(options);
+  }
+
+  options = options || {};
+
+  Box.call(this, options);
+
+  if (this.exists('mplayer')) {
+    shell = 'mplayer';
+    args = ['-vo', 'caca', '-quiet', options.file];
+  } else if (this.exists('mpv')) {
+    shell = 'mpv';
+    args = ['--vo', 'caca', '--really-quiet', options.file];
+  } else {
+    this.parseTags = true;
+    this.setContent('{red-fg}{bold}Error:{/bold}'
+      + ' mplayer or mpv not installed.{/red-fg}');
+    return this;
+  }
+
+  var opts = {
+    parent: this,
+    left: 0,
+    top: 0,
+    width: this.width - this.iwidth,
+    height: this.height - this.iheight,
+    shell: shell,
+    args: args.slice()
+  };
+
+  this.now = Date.now() / 1000 | 0;
+  this.start = opts.start || 0;
+  if (this.start) {
+    opts.args.unshift('--start', this.start + '');
+  }
+
+  var DISPLAY = process.env.DISPLAY;
+  delete process.env.DISPLAY;
+  this.tty = new Terminal(opts);
+  process.env.DISPLAY = DISPLAY;
+
+  this.on('click', function() {
+    self.tty.pty.write('p');
+  });
+
+  // mplayer/mpv cannot resize itself in the terminal, so we have
+  // to restart it at the correct start time.
+  this.on('resize', function() {
+    self.tty.destroy();
+
+    var opts = {
+      parent: self,
+      left: 0,
+      top: 0,
+      width: self.width - self.iwidth,
+      height: self.height - self.iheight,
+      shell: shell,
+      args: args.slice()
+    };
+
+    var watched = (Date.now() / 1000 | 0) - self.now;
+    self.now = Date.now() / 1000 | 0;
+    self.start += watched;
+    opts.args.unshift('--start', self.start + '');
+
+    var DISPLAY = process.env.DISPLAY;
+    delete process.env.DISPLAY;
+    self.tty = new Terminal(opts);
+    process.env.DISPLAY = DISPLAY;
+    self.screen.render();
+  });
+}
+
+Video.prototype.__proto__ = Box.prototype;
+
+Video.prototype.type = 'video';
+
+Video.prototype.exists = function(program) {
+  try {
+    return !!+cp.execSync('type '
+      + program + ' > /dev/null 2> /dev/null'
+      + ' && echo 1', { encoding: 'utf8' }).trim();
+  } catch (e) {
+    return false;
+  }
+};
+
+/**
+ * Expose
+ */
+
+module.exports = Video;

test/widget-video.js

@@ -0,0 +1,26 @@
+var blessed = require('../');
+var fs = require('fs');
+
+var screen = blessed.screen({
+  tput: true,
+  smartCSR: true,
+  dump: __dirname + '/logs/video.log'
+});
+
+var video = blessed.video({
+  parent: screen,
+  left: 1,
+  top: 1,
+  width: '90%',
+  height: '90%',
+  border: 'line',
+  file: process.argv[2]
+});
+
+video.focus();
+
+screen.render();
+
+screen.key(['q', 'C-q', 'C-c'], function() {
+  process.exit(0);
+});