##// END OF EJS Templates
Merge pull request #1832 from ellisonbg/imageresize...
Merge pull request #1832 from ellisonbg/imageresize Make svg, jpeg and png images resizable in notebook.

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utils.js
149 lines | 4.9 KiB | application/javascript | JavascriptLexer
//----------------------------------------------------------------------------
// Copyright (C) 2008-2011 The IPython Development Team
//
// Distributed under the terms of the BSD License. The full license is in
// the file COPYING, distributed as part of this software.
//----------------------------------------------------------------------------
//============================================================================
// Utilities
//============================================================================
IPython.namespace('IPython.utils');
IPython.utils = (function (IPython) {
var uuid = function () {
// http://www.ietf.org/rfc/rfc4122.txt
var s = [];
var hexDigits = "0123456789ABCDEF";
for (var i = 0; i < 32; i++) {
s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1);
}
s[12] = "4"; // bits 12-15 of the time_hi_and_version field to 0010
s[16] = hexDigits.substr((s[16] & 0x3) | 0x8, 1); // bits 6-7 of the clock_seq_hi_and_reserved to 01
var uuid = s.join("");
return uuid;
};
//Fix raw text to parse correctly in crazy XML
function xmlencode(string) {
return string.replace(/\&/g,'&'+'amp;')
.replace(/</g,'&'+'lt;')
.replace(/>/g,'&'+'gt;')
.replace(/\'/g,'&'+'apos;')
.replace(/\"/g,'&'+'quot;')
.replace(/`/g,'&'+'#96;');
}
//Map from terminal commands to CSS classes
ansi_colormap = {
"30":"ansiblack", "31":"ansired",
"32":"ansigreen", "33":"ansiyellow",
"34":"ansiblue", "35":"ansipurple","36":"ansicyan",
"37":"ansigrey", "01":"ansibold"
};
// Transform ANSI color escape codes into HTML <span> tags with css
// classes listed in the above ansi_colormap object. The actual color used
// are set in the css file.
function fixConsole(txt) {
txt = xmlencode(txt);
var re = /\033\[([\dA-Fa-f;]*?)m/;
var opened = false;
var cmds = [];
var opener = "";
var closer = "";
while (re.test(txt)) {
var cmds = txt.match(re)[1].split(";");
closer = opened?"</span>":"";
opened = cmds.length > 1 || cmds[0] != 0;
var rep = [];
for (var i in cmds)
if (typeof(ansi_colormap[cmds[i]]) != "undefined")
rep.push(ansi_colormap[cmds[i]]);
opener = rep.length > 0?"<span class=\""+rep.join(" ")+"\">":"";
txt = txt.replace(re, closer + opener);
}
if (opened) txt += "</span>";
return txt;
}
// Remove chunks that should be overridden by the effect of
// carriage return characters
function fixCarriageReturn(txt) {
tmp = txt;
do {
txt = tmp;
tmp = txt.replace(/^.*\r(?!\n)/gm, '');
} while (tmp.length < txt.length);
return txt;
}
grow = function(element) {
// Grow the cell by hand. This is used upon reloading from JSON, when the
// autogrow handler is not called.
var dom = element.get(0);
var lines_count = 0;
// modified split rule from
// http://stackoverflow.com/questions/2035910/how-to-get-the-number-of-lines-in-a-textarea/2036424#2036424
var lines = dom.value.split(/\r|\r\n|\n/);
lines_count = lines.length;
if (lines_count >= 1) {
dom.rows = lines_count;
} else {
dom.rows = 1;
}
};
// some keycodes that seem to be platform/browser independant
var keycodes ={
BACKSPACE: 8,
TAB : 9,
ENTER : 13,
SHIFT : 16,
CTRL : 17,
CONTROL : 17,
ALT : 18,
ESC : 27,
SPACE : 32,
PGUP : 33,
PGDOWN : 34,
LEFT_ARROW: 37,
LEFTARROW: 37,
LEFT : 37,
UP_ARROW : 38,
UPARROW : 38,
UP : 38,
RIGHT_ARROW:39,
RIGHTARROW:39,
RIGHT : 39,
DOWN_ARROW: 40,
DOWNARROW: 40,
DOWN : 40,
};
points_to_pixels = function (points) {
// A reasonably good way of converting between points and pixels.
var test = $('<div style="display: none; width: 10000pt; padding:0; border:0;"></div>');
$(body).append(test);
var pixel_per_point = test.width()/10000;
test.remove();
return Math.floor(points*pixel_per_point);
}
return {
uuid : uuid,
fixConsole : fixConsole,
keycodes : keycodes,
grow : grow,
fixCarriageReturn : fixCarriageReturn
points_to_pixels : points_to_pixels
};
}(IPython));