Low level usage

Low-level Usage¶

This will actually parse the xterm terminfo and compile every string capability to a javascript function:

var blessed = require('blessed');

var tput = blessed.tput({
  terminal: 'xterm-256color',
  extended: true
});

process.stdout.write(tput.setaf(4) + 'Hello' + tput.sgr0() + '\n');

To play around with it on the command line, it works just like tput:

$ tput.js setaf 2
$ tput.js sgr0
$ echo "$(tput.js setaf 2)Hello World$(tput.js sgr0)"

The main functionality is exposed in the main blessed module:

var blessed = require('blessed')
  , program = blessed.program();

program.key('q', function(ch, key) {
  program.clear();
  program.disableMouse();
  program.showCursor();
  program.normalBuffer();
  process.exit(0);
});

program.on('mouse', function(data) {
  if (data.action === 'mousemove') {
    program.move(data.x, data.y);
    program.bg('red');
    program.write('x');
    program.bg('!red');
  }
});

program.alternateBuffer();
program.enableMouse();
program.hideCursor();
program.clear();

program.move(1, 1);
program.bg('black');
program.write('Hello world', 'blue fg');
program.setx((program.cols / 2 | 0) - 4);
program.down(5);
program.write('Hi again!');
program.bg('!black');
program.feed();

Last update: February 22, 2020