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/ home / freeclou / .nvm / versions / node / v12.22.1 / lib / node_modules / pm2 / node_modules / blessed / lib /

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gpmclient.js

/**
 * gpmclient.js - support the gpm mouse protocol
 * Copyright (c) 2013-2015, Christopher Jeffrey and contributors (MIT License).
 * https://github.com/chjj/blessed
 */

var net = require('net');
var fs = require('fs');
var EventEmitter = require('events').EventEmitter;

var GPM_USE_MAGIC = false;

var GPM_MOVE = 1
  , GPM_DRAG = 2
  , GPM_DOWN = 4
  , GPM_UP = 8;

var GPM_DOUBLE = 32
  , GPM_MFLAG = 128;

var GPM_REQ_NOPASTE = 3
  , GPM_HARD = 256;

var GPM_MAGIC = 0x47706D4C;
var GPM_SOCKET = '/dev/gpmctl';

// typedef struct Gpm_Connect {
//   unsigned short eventMask, defaultMask;
//   unsigned short minMod, maxMod;
//   int pid;
//   int vc;
// } Gpm_Connect;

// typedef struct Gpm_Event {
//   unsigned char buttons, modifiers;  // try to be a multiple of 4
//   unsigned short vc;
//   short dx, dy, x, y; // displacement x,y for this event, and absolute x,y
//   enum Gpm_Etype type;
//   // clicks e.g. double click are determined by time-based processing
//   int clicks;
//   enum Gpm_Margin margin;
//   // wdx/y: displacement of wheels in this event. Absolute values are not
//   // required, because wheel movement is typically used for scrolling
//   // or selecting fields, not for cursor positioning. The application
//   // can determine when the end of file or form is reached, and not
//   // go any further.
//   // A single mouse will use wdy, "vertical scroll" wheel.
//   short wdx, wdy;
// } Gpm_Event;

function parseEvent(raw) {
  var evnt = {};
  evnt.buttons = raw[0];
  evnt.modifiers = raw[1];
  evnt.vc = raw.readUInt16LE(2);
  evnt.dx = raw.readInt16LE(4);
  evnt.dy = raw.readInt16LE(6);
  evnt.x = raw.readInt16LE(8);
  evnt.y = raw.readInt16LE(10);
  evnt.type = raw.readInt16LE(12);
  evnt.clicks = raw.readInt32LE(16);
  evnt.margin = raw.readInt32LE(20);
  evnt.wdx = raw.readInt16LE(24);
  evnt.wdy = raw.readInt16LE(26);
  return evnt;
}

function GpmClient(options) {
  if (!(this instanceof GpmClient)) {
    return new GpmClient(options);
  }

EventEmitter.call(this);

var pid = process.pid;

// check tty for /dev/tty[n]
  var path;
  try {
    path = fs.readlinkSync('/proc/' + pid + '/fd/0');
  } catch (e) {
    ;
  }
  var tty = /tty[0-9]+$/.exec(path);
  if (tty === null) {
    // TODO: should  also check for /dev/input/..
  }

var vc;
  if (tty) {
    tty = tty[0];
    vc = +/[0-9]+$/.exec(tty)[0];
  }

var self = this;

if (tty) {
    fs.stat(GPM_SOCKET, function(err, stat) {
      if (err || !stat.isSocket()) {
        return;
      }

var conf =  {
        eventMask: 0xffff,
        defaultMask: GPM_MOVE | GPM_HARD,
        minMod: 0,
        maxMod: 0xffff,
        pid: pid,
        vc: vc
      };

var gpm = net.createConnection(GPM_SOCKET);
      this.gpm = gpm;

gpm.on('connect', function() {
        send_config(gpm, conf, function() {
          conf.pid = 0;
          conf.vc = GPM_REQ_NOPASTE;
          //send_config(gpm, conf);
        });
      });

gpm.on('data', function(packet) {
        var evnt = parseEvent(packet);
        switch (evnt.type & 15) {
          case GPM_MOVE:
            if (evnt.dx || evnt.dy) {
              self.emit('move', evnt.buttons, evnt.modifiers, evnt.x, evnt.y);
            }
            if (evnt.wdx || evnt.wdy) {
              self.emit('mousewheel',
                evnt.buttons, evnt.modifiers,
                evnt.x, evnt.y, evnt.wdx, evnt.wdy);
            }
            break;
          case GPM_DRAG:
            if (evnt.dx || evnt.dy) {
              self.emit('drag', evnt.buttons, evnt.modifiers, evnt.x, evnt.y);
            }
            if (evnt.wdx || evnt.wdy) {
              self.emit('mousewheel',
                evnt.buttons, evnt.modifiers,
                evnt.x, evnt.y, evnt.wdx, evnt.wdy);
            }
            break;
          case GPM_DOWN:
            self.emit('btndown', evnt.buttons, evnt.modifiers, evnt.x, evnt.y);
            if (evnt.type & GPM_DOUBLE) {
              self.emit('dblclick', evnt.buttons, evnt.modifiers, evnt.x, evnt.y);
            }
            break;
          case GPM_UP:
            self.emit('btnup', evnt.buttons, evnt.modifiers, evnt.x, evnt.y);
            if (!(evnt.type & GPM_MFLAG)) {
              self.emit('click', evnt.buttons, evnt.modifiers, evnt.x, evnt.y);
            }
            break;
        }
      });

gpm.on('error', function() {
        self.stop();
      });
    });
  }
}

GpmClient.prototype.__proto__ = EventEmitter.prototype;

GpmClient.prototype.stop = function() {
  if (this.gpm) {
    this.gpm.end();
  }
  delete this.gpm;
};

GpmClient.prototype.ButtonName =  function(btn) {
  if (btn & 4) return 'left';
  if (btn & 2) return 'middle';
  if (btn & 1) return 'right';
  return '';
};

GpmClient.prototype.hasShiftKey =  function(mod) {
  return (mod & 1) ? true : false;
};

GpmClient.prototype.hasCtrlKey =  function(mod) {
  return (mod & 4) ? true : false;
};

GpmClient.prototype.hasMetaKey =  function(mod) {
  return (mod & 8) ? true : false;
};

module.exports = GpmClient;

Name	Type	Size	Owner/Group	Permission	Last Modified	Actions
.	dir	-	freeclou/freeclou	drwxr-xr-x	2025-01-27 08:08:20
..	dir	-	freeclou/freeclou	drwxr-xr-x	2025-01-27 08:08:20
widgets	dir	-	freeclou/freeclou	drwxr-xr-x	2025-01-27 08:08:20
alias.js	text/plain	75.53 KB	freeclou/freeclou	-rw-r--r--	2015-08-11 09:22:02
blessed.js	text/plain	786 B	freeclou/freeclou	-rw-r--r--	2015-07-12 12:18:31
colors.js	text/plain	9.94 KB	freeclou/freeclou	-rw-r--r--	2015-08-11 09:22:02
events.js	text/plain	4.34 KB	freeclou/freeclou	-rw-r--r--	2015-09-01 03:50:07
gpmclient.js	text/plain	5.78 KB	freeclou/freeclou	-rw-r--r--	2015-08-11 09:22:02
helpers.js	text/plain	3.42 KB	freeclou/freeclou	-rw-r--r--	2015-08-11 06:58:10
keys.js	text/plain	11.03 KB	freeclou/freeclou	-rw-r--r--	2015-08-11 09:22:02
program.js	text/plain	117.5 KB	freeclou/freeclou	-rw-r--r--	2015-08-31 11:09:49
tput.js	text/plain	66.99 KB	freeclou/freeclou	-rw-r--r--	2015-08-16 05:22:05
unicode.js	text/plain	27.1 KB	freeclou/freeclou	-rw-r--r--	2015-08-11 09:22:02
widget.js	text/plain	1.01 KB	freeclou/freeclou	-rw-r--r--	2015-07-22 09:30:45