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neo-blessed
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detect bugged vte mouse better. see #89.

This commit is contained in:
Christopher Jeffrey 2015-02-01 09:21:07 -08:00
parent c243415049
commit a2afbe54bc
2 changed files with 25 additions and 8 deletions
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24
lib/program.js
View File

@ -407,15 +407,31 @@ Program.prototype._bindMouse = function(s, buf) {
// under 0x20, but since VTE can have the bytes overflow, we can consider
// bytes below 0x20 to be up to 0xff + 0x20. This gives a limit of 287. Since
// characters ranging from 223 to 248 confuse javascript's utf parser, we
// need to parse the raw binary.
if (this.isVTE && buf[0] === 0x1b && buf[1] === 0x5b && buf[2] === 0x4d) {
// need to parse the raw binary. We can detect whether the terminal is using
// a bugged VTE version by examining the coordinates and seeing whether they
// are a value they would never otherwise be with a properly implemented x10
// protocol. This method of detecting VTE is only 99% reliable because we
// can't check if the coords are 0x00 (255) since that is a valid x10 coord
// technically.
var bx = s.charCodeAt(4);
var by = s.charCodeAt(5);
if (buf[0] === 0x1b && buf[1] === 0x5b && buf[2] === 0x4d
&& (this.isVTE
|| bx >= 65533 || by >= 65533
|| (bx > 0x00 && bx < 0x20)
|| (by > 0x00 && by < 0x20)
|| (buf[4] > 223 && buf[4] < 248 && buf.length === 6)
|| (buf[5] > 223 && buf[5] < 248 && buf.length === 6))) {
var b = buf[3]
, x = buf[4]
, y = buf[5];
if (x < 0x20) x += 255;
if (y < 0x20) y += 255;
// unsigned char overflow.
if (x < 0x20) x += 0xff;
if (y < 0x20) y += 0xff;
// Convert the coordinates into a
// properly formatted x10 utf8 sequence.
s = '\x1b[M'
+ String.fromCharCode(b)
+ String.fromCharCode(x)

9
test/program-mouse.js
View File

@ -1,4 +1,5 @@
var blessed = require('../')
, util = require('util')
, program;
program = blessed.program({
@ -19,7 +20,7 @@ program.on('mouse', function(data) {
program.cup(data.y, data.x);
program.write(' ', 'blue bg');
program.cup(0, 0);
console.log(data);
program.write(util.inspect(data));
});
program.key(['q', 'escape', 'C-c'], function() {
@ -33,15 +34,15 @@ program.on('keypress', function(ch, data) {
if (data.name === 'mouse') return;
program.clear();
program.cup(0, 0);
console.log(data);
program.write(util.inspect(data));
});
program.on('mouse-debug', function(data) {
program.cup(20, 0);
data = Array.prototype.slice.call(data);
console.log(data);
program.write(util.inspect(data));
});
// program.getCursor(function(err, data) {
// console.log(data);
// program.write(util.inspect(data));
// });