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neo-blessed
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add screenshot method to widget.js.

This commit is contained in:
Christopher Jeffrey 2015-04-21 05:41:25 -07:00
parent 429afdc541
commit 5f1d320112
3 changed files with 175 additions and 170 deletions
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9
README.md
View File

@ -377,6 +377,9 @@ The screen on which every other node renders.
- __cursorColor(color)__ - attempt to change cursor color. returns true if
successful.
- __cursorReset()__ - attempt to reset cursor. returns true if successful.
- __screenshot([xi, xl, yi, yl])__ - take an SGR screenshot of the screen
within the region. returns a string containing only characters and SGR codes.
can be displayed by simply echoing it in a terminal.
#### Element (from Node)
@ -512,6 +515,9 @@ The base element.
- __enableInput()__ - enable key and mouse events. calls bot enableMouse and enableKeys.
- __enableDrag()__ - enable dragging of the element.
- __disableDrag()__ - disable dragging of the element.
- __screenshot([xi, xl, yi, yl])__ - take an SGR screenshot of the element
within the region. returns a string containing only characters and SGR codes.
can be displayed by simply echoing it in a terminal.
###### Content Methods
@ -1252,6 +1258,9 @@ manager. Requires term.js and pty.js to be installed. See
- inherits all from Box.
- __write(data)__ - write data to the terminal.
- __screenshot([xi, xl, yi, xl])__ - nearly identical to `element.screenshot`,
however, the specified region includes the terminal's _entire_ scrollback,
rather than just what is visible on the screen.
- Other methods similar to ScrollableBox.

170
example/ansi-viewer/index.js
View File

@ -227,173 +227,3 @@ function cp437ToUtf8(buf, callback) {
return callback(e);
}
}
blessed.Element.prototype.screenshot = function(xi, xl, yi, yl) {
xi = this.lpos.xi + this.ileft + (xi || 0);
if (xl != null) {
xl = this.lpos.xi + this.ileft + (xl || 0);
} else {
xl = this.lpos.xl - this.iright;
}
yi = this.lpos.yi + this.itop + (yi || 0);
if (yl != null) {
yl = this.lpos.yi + this.itop + (yl || 0);
} else {
yl = this.lpos.yl - this.ibottom;
}
return this.screen.screenshot(xi, xl, yi, yl);
};
blessed.Terminal.prototype.screenshot = function(xi, xl, yi, yl) {
xi = 0 + (xi || 0);
if (xl != null) {
xl = 0 + (xl || 0);
} else {
xl = this.term.lines[0].length;
}
yi = 0 + (yi || 0);
if (yl != null) {
yl = 0 + (yl || 0);
} else {
yl = this.term.lines.length;
}
return this.screen.screenshot(xi, xl, yi, yl, this.term);
};
blessed.Screen.prototype.screenshot = function(xi, xl, yi, yl, term) {
if (xi == null) xi = 0;
if (xl == null) xl = this.lpos.xl;
if (yi == null) yi = 0;
if (yl == null) yl = this.lpos.yl;
var x
, y
, line
, out
, ch
, data
, attr
, cwid
, point;
var sdattr = this.dattr;
if (term) {
this.dattr = term.defAttr;
// default foreground = 257
if (((this.dattr >> 9) & 0x1ff) === 257) {
this.dattr &= ~(0x1ff << 9);
this.dattr |= ((sdattr >> 9) & 0x1ff) << 9;
}
// default background = 256
if ((this.dattr & 0x1ff) === 256) {
this.dattr &= ~0x1ff;
this.dattr |= sdattr & 0x1ff;
}
}
var main = '';
var acs;
for (y = yi; y < yl; y++) {
line = term
? term.lines[y]
: this.lines[y];
if (!line) break;
out = '';
attr = this.dattr;
for (x = xi; x < xl; x++) {
if (!line[x]) break;
data = line[x][0];
ch = line[x][1];
if (term) {
// default foreground = 257
if (((data >> 9) & 0x1ff) === 257) {
data &= ~(0x1ff << 9);
data |= ((sdattr >> 9) & 0x1ff) << 9;
}
// default background = 256
if ((data & 0x1ff) === 256) {
data &= ~0x1ff;
data |= sdattr & 0x1ff;
}
}
if (data !== attr) {
if (attr !== this.dattr) {
out += '\x1b[m';
}
if (data !== this.dattr) {
out += screen.codeAttr(data);
}
}
if (this.fullUnicode) {
point = blessed.unicode.codePointAt(line[x][1], 0);
if (point <= 0x00ffff) {
cwid = blessed.unicode.charWidth(point);
if (cwid === 2) {
if (x === xl - 1) {
ch = ' ';
} else {
x++;
}
}
}
}
/*
if (this.tput.strings.enter_alt_charset_mode
&& !this.tput.brokenACS && (this.tput.acscr[ch] || acs)) {
if (this.tput.acscr[ch]) {
if (acs) {
ch = this.tput.acscr[ch];
} else {
ch = this.tput.smacs()
+ this.tput.acscr[ch];
acs = true;
}
} else if (acs) {
ch = this.tput.rmacs() + ch;
acs = false;
}
} else {
if (!this.tput.unicode && this.tput.numbers.U8 !== 1 && ch > '~') {
ch = this.tput.utoa[ch] || '?';
}
}
*/
out += ch;
attr = data;
}
if (attr !== this.dattr) {
out += '\x1b[m';
}
if (out) {
main += (y > 0 ? '\n' : '') + out;
}
}
/*
if (acs) {
main += this.tput.rmacs();
acs = false;
}
*/
main = main.replace(/(?:\s*\x1b\[40m\s*\x1b\[m\s*)*$/, '') + '\n';
if (term) {
this.dattr = sdattr;
}
return main;
};

166
lib/widget.js
View File

@ -2020,6 +2020,140 @@ Screen.prototype._cursorAttr = function(cursor, dattr) {
};
};
Screen.prototype.screenshot = function(xi, xl, yi, yl, term) {
if (xi == null) xi = 0;
if (xl == null) xl = this.lpos.xl;
if (yi == null) yi = 0;
if (yl == null) yl = this.lpos.yl;
var x
, y
, line
, out
, ch
, data
, attr
, cwid
, point;
var sdattr = this.dattr;
if (term) {
this.dattr = term.defAttr;
// default foreground = 257
if (((this.dattr >> 9) & 0x1ff) === 257) {
this.dattr &= ~(0x1ff << 9);
this.dattr |= ((sdattr >> 9) & 0x1ff) << 9;
}
// default background = 256
if ((this.dattr & 0x1ff) === 256) {
this.dattr &= ~0x1ff;
this.dattr |= sdattr & 0x1ff;
}
}
var main = '';
// var acs;
for (y = yi; y < yl; y++) {
line = term
? term.lines[y]
: this.lines[y];
if (!line) break;
out = '';
attr = this.dattr;
for (x = xi; x < xl; x++) {
if (!line[x]) break;
data = line[x][0];
ch = line[x][1];
if (term) {
// default foreground = 257
if (((data >> 9) & 0x1ff) === 257) {
data &= ~(0x1ff << 9);
data |= ((sdattr >> 9) & 0x1ff) << 9;
}
// default background = 256
if ((data & 0x1ff) === 256) {
data &= ~0x1ff;
data |= sdattr & 0x1ff;
}
}
if (data !== attr) {
if (attr !== this.dattr) {
out += '\x1b[m';
}
if (data !== this.dattr) {
out += this.codeAttr(data);
}
}
if (this.fullUnicode) {
point = unicode.codePointAt(line[x][1], 0);
if (point <= 0x00ffff) {
cwid = unicode.charWidth(point);
if (cwid === 2) {
if (x === xl - 1) {
ch = ' ';
} else {
x++;
}
}
}
}
// if (this.tput.strings.enter_alt_charset_mode
// && !this.tput.brokenACS && (this.tput.acscr[ch] || acs)) {
// if (this.tput.acscr[ch]) {
// if (acs) {
// ch = this.tput.acscr[ch];
// } else {
// ch = this.tput.smacs()
// + this.tput.acscr[ch];
// acs = true;
// }
// } else if (acs) {
// ch = this.tput.rmacs() + ch;
// acs = false;
// }
// } else {
// if (!this.tput.unicode && this.tput.numbers.U8 !== 1 && ch > '~') {
// ch = this.tput.utoa[ch] || '?';
// }
// }
out += ch;
attr = data;
}
if (attr !== this.dattr) {
out += '\x1b[m';
}
if (out) {
main += (y > 0 ? '\n' : '') + out;
}
}
// if (acs) {
// main += this.tput.rmacs();
// acs = false;
// }
main = main.replace(/(?:\s*\x1b\[40m\s*\x1b\[m\s*)*$/, '') + '\n';
if (term) {
this.dattr = sdattr;
}
return main;
};
/**
* Element
*/
@ -4552,6 +4686,22 @@ Element.prototype.getScreenLines = function() {
return this._clines.slice();
};
Element.prototype.screenshot = function(xi, xl, yi, yl) {
xi = this.lpos.xi + this.ileft + (xi || 0);
if (xl != null) {
xl = this.lpos.xi + this.ileft + (xl || 0);
} else {
xl = this.lpos.xl - this.iright;
}
yi = this.lpos.yi + this.itop + (yi || 0);
if (yl != null) {
yl = this.lpos.yi + this.itop + (yl || 0);
} else {
yl = this.lpos.yl - this.ibottom;
}
return this.screen.screenshot(xi, xl, yi, yl);
};
/**
* Box
*/
@ -8278,6 +8428,22 @@ Terminal.prototype.setScrollPerc = function(i) {
return this.setScroll((i / 100) * this.term.ybase | 0);
};
Terminal.prototype.screenshot = function(xi, xl, yi, yl) {
xi = 0 + (xi || 0);
if (xl != null) {
xl = 0 + (xl || 0);
} else {
xl = this.term.lines[0].length;
}
yi = 0 + (yi || 0);
if (yl != null) {
yl = 0 + (yl || 0);
} else {
yl = this.term.lines.length;
}
return this.screen.screenshot(xi, xl, yi, yl, this.term);
};
/**
* Image
* Good example of w3mimgdisplay commands: