1 /* ***** BEGIN LICENSE BLOCK *****
2 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
4 * The contents of this file are subject to the Mozilla Public License Version
5 * 1.1 (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
7 * http://www.mozilla.org/MPL/
9 * Software distributed under the License is distributed on an "AS IS" basis,
10 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
11 * for the specific language governing rights and limitations under the
14 * The Original Code is KaiRo.at Mandelbrot, XULRunner version.
16 * The Initial Developer of the Original Code is
17 * Robert Kaiser <kairo@kairo.at>.
18 * Portions created by the Initial Developer are Copyright (C) 2008
19 * the Initial Developer. All Rights Reserved.
22 * Robert Kaiser <kairo@kairo.at>
24 * Alternatively, the contents of this file may be used under the terms of
25 * either the GNU General Public License Version 2 or later (the "GPL"), or
26 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
27 * in which case the provisions of the GPL or the LGPL are applicable instead
28 * of those above. If you wish to allow use of your version of this file only
29 * under the terms of either the GPL or the LGPL, and not to allow others to
30 * use your version of this file under the terms of the MPL, indicate your
31 * decision by deleting the provisions above and replace them with the notice
32 * and other provisions required by the GPL or the LGPL. If you do not delete
33 * the provisions above, a recipient may use your version of this file under
34 * the terms of any one of the MPL, the GPL or the LGPL.
36 * ***** END LICENSE BLOCK ***** */
38 var gColorPalette = [];
40 function initSettings() {
41 recalcCoord('Cr', 'scale');
42 recalcCoord('Ci', 'scale');
45 function drawPreview() {
46 let canvas = document.getElementById("mbrotPreview");
47 let context = canvas.getContext("2d");
49 if (document.getElementById("imgWidth").value /
50 document.getElementById("imgHeight").value
53 canvas.width = canvas.height *
54 document.getElementById("imgWidth").value /
55 document.getElementById("imgHeight").value;
59 canvas.height = canvas.width *
60 document.getElementById("imgHeight").value /
61 document.getElementById("imgWidth").value;
64 let Cr_min = parseFloat(document.getElementById("Cr_min").value);
65 let Cr_max = parseFloat(document.getElementById("Cr_max").value);
66 if ((Cr_min < -2) || (Cr_min > 2) ||
67 (Cr_max < -2) || (Cr_max > 2) || (Cr_min >= Cr_max)) {
68 Cr_min = -2.0; Cr_max = 1.0;
71 let Ci_min = parseFloat(document.getElementById("Ci_min").value);
72 let Ci_max = parseFloat(document.getElementById("Ci_max").value);
73 if ((Ci_min < -2) || (Ci_min > 2) ||
74 (Ci_max < -2) || (Ci_max > 2) || (Ci_min >= Ci_max)) {
75 Ci_min = -2.0; Ci_max = 1.0;
78 let iterMax = gPref.getIntPref("mandelbrot.iteration_max");
79 let algorithm = gPref.getCharPref("mandelbrot.use_algorithm");
81 context.fillStyle = "rgba(255, 255, 255, 127)";
82 context.fillRect(0, 0, canvas.width, canvas.height);
85 var currentPalette = gPref.getCharPref("mandelbrot.color_palette");
88 var currentPalette = '';
90 if (!currentPalette.length) {
91 currentPalette = 'kairo';
93 gColorPalette = getColorPalette(currentPalette);
95 drawLine(0, [Cr_min, Cr_max, Ci_min, Ci_max],
96 canvas, context, iterMax, algorithm);
99 function recalcCoord(coord, target) {
100 let othercoord = (coord == 'Ci') ? 'Cr' : 'Ci';
101 let owndim = (coord == 'Ci') ? 'height' : 'width';
102 let otherdim = (coord == 'Ci') ? 'width' : 'height';
103 if (target == 'scale') {
105 parseFloat(document.getElementById(coord + '_max').value) -
106 parseFloat(document.getElementById(coord + '_min').value);
107 document.getElementById(coord + '_scale').value = roundCoord(myscale);
109 else if (target == 'max') {
111 parseFloat(document.getElementById(coord + '_min').value) +
112 parseFloat(document.getElementById(coord + '_scale').value);
113 document.getElementById('mandelbrot.last_image.' + coord + '_max').value = roundCoord(mymax);
114 var myscale = document.getElementById(coord + '_scale').value;
116 if (document.getElementById('syncProp').checked) {
117 let otherscale = myscale *
118 document.getElementById('mandelbrot.image.' + otherdim).value /
119 document.getElementById('mandelbrot.image.' + owndim).value;
120 document.getElementById(othercoord + '_scale').value = roundCoord(otherscale);
122 parseFloat(document.getElementById(othercoord + '_min').value) +
123 parseFloat(document.getElementById(othercoord + '_scale').value);
124 document.getElementById('mandelbrot.last_image.' + othercoord + '_max').value = roundCoord(othermax);
128 function checkProportions() {
129 if (!document.getElementById('syncProp').checked) {
130 recalcCoord('Cr', 'scale');
134 function roundCoord(floatval) {
135 // We should round to 10 decimals here or so