-/* ***** BEGIN LICENSE BLOCK *****
- * Version: MPL 1.1/GPL 2.0/LGPL 2.1
- *
- * The contents of this file are subject to the Mozilla Public License Version
- * 1.1 (the "License"); you may not use this file except in compliance with
- * the License. You may obtain a copy of the License at
- * http://www.mozilla.org/MPL/
- *
- * Software distributed under the License is distributed on an "AS IS" basis,
- * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
- * for the specific language governing rights and limitations under the
- * License.
- *
- * The Original Code is KaiRo.at Mandelbrot, XULRunner version.
- *
- * The Initial Developer of the Original Code is
- * Robert Kaiser <kairo@kairo.at>.
- * Portions created by the Initial Developer are Copyright (C) 2008-210
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- * Robert Kaiser <kairo@kairo.at>
- * Boris Zbarsky <bzbarsky@mit.edu>
- *
- * Alternatively, the contents of this file may be used under the terms of
- * either the GNU General Public License Version 2 or later (the "GPL"), or
- * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
- * in which case the provisions of the GPL or the LGPL are applicable instead
- * of those above. If you wish to allow use of your version of this file only
- * under the terms of either the GPL or the LGPL, and not to allow others to
- * use your version of this file under the terms of the MPL, indicate your
- * decision by deleting the provisions above and replace them with the notice
- * and other provisions required by the GPL or the LGPL. If you do not delete
- * the provisions above, a recipient may use your version of this file under
- * the terms of any one of the MPL, the GPL or the LGPL.
- *
- * ***** END LICENSE BLOCK ***** */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this file,
+ * You can obtain one at http://mozilla.org/MPL/2.0/. */
+var gMainCanvas, gMainContext;
var gColorPalette = [];
var gStartTime = 0;
var gCurrentImageData;
var gLastImageData;
function Startup() {
- var img = document.getElementById("mbrotImage");
- img.addEventListener("mouseup", imgEvHandler, false);
- img.addEventListener("mousedown", imgEvHandler, false);
- img.addEventListener("mousemove", imgEvHandler, false);
- img.addEventListener("touchstart", imgEvHandler, false);
- img.addEventListener("touchend", imgEvHandler, false);
- img.addEventListener("touchcancel", imgEvHandler, false);
- img.addEventListener("touchleave", imgEvHandler, false);
- img.addEventListener("touchmove", imgEvHandler, false);
+ gMainCanvas = document.getElementById("mbrotImage");
+ gMainContext = gMainCanvas.getContext("2d");
+
+ gMainCanvas.addEventListener("mouseup", imgEvHandler, false);
+ gMainCanvas.addEventListener("mousedown", imgEvHandler, false);
+ gMainCanvas.addEventListener("mousemove", imgEvHandler, false);
+ gMainCanvas.addEventListener("touchstart", imgEvHandler, false);
+ gMainCanvas.addEventListener("touchend", imgEvHandler, false);
+ gMainCanvas.addEventListener("touchcancel", imgEvHandler, false);
+ gMainCanvas.addEventListener("touchleave", imgEvHandler, false);
+ gMainCanvas.addEventListener("touchmove", imgEvHandler, false);
+
+ var initTile = new Image();
+ initTile.src = "style/initial-overview.png";
+ gMainContext.drawImage(initTile, 0, 0);
}
function getAdjustVal(aName) {
}
function drawImage() {
- var canvas = document.getElementById("mbrotImage");
- var context = canvas.getContext("2d");
+ var canvas = gMainCanvas;
+ var context = gMainContext;
document.getElementById("calcTime").textContent = "--";
if (gCurrentImageData) {
gLastImageData = gCurrentImageData;
+ document.getElementById("backButton").disabled = false;
}
gColorPalette = getColorPalette(document.getElementById("palette").value);
if (zoomend.y < zoomstart.y)
[zoomend.y, zoomstart.y] = [zoomstart.y, zoomend.y];
- // determine new "coordinates"
- var CWidth = gCurrentImageData.C_max.r - gCurrentImageData.C_min.r;
- var CHeight = gCurrentImageData.C_max.i - gCurrentImageData.C_min.i;
- var newC_min = new complex(
- gCurrentImageData.C_min.r + zoomstart.x / gCurrentImageData.iWidth * CWidth,
- gCurrentImageData.C_min.i + zoomstart.y / gCurrentImageData.iHeight * CHeight);
- var newC_max = new complex(
- gCurrentImageData.C_min.r + zoomend.x / gCurrentImageData.iWidth * CWidth,
- gCurrentImageData.C_min.i + zoomend.y / gCurrentImageData.iHeight * CHeight);
+ if (gCurrentImageData) {
+ // determine new "coordinates"
+ var CWidth = gCurrentImageData.C_max.r - gCurrentImageData.C_min.r;
+ var CHeight = gCurrentImageData.C_max.i - gCurrentImageData.C_min.i;
+ var newC_min = new complex(
+ gCurrentImageData.C_min.r + zoomstart.x / gCurrentImageData.iWidth * CWidth,
+ gCurrentImageData.C_min.i + zoomstart.y / gCurrentImageData.iHeight * CHeight);
+ var newC_max = new complex(
+ gCurrentImageData.C_min.r + zoomend.x / gCurrentImageData.iWidth * CWidth,
+ gCurrentImageData.C_min.i + zoomend.y / gCurrentImageData.iHeight * CHeight);
+ }
+ else {
+ var newC_min = new complex(-2, -1.5);
+ var newC_max = new complex(1, 1.5);
+ }
adjustCoordsAndDraw(newC_min, newC_max);
}
coordObj.clientX - canvas.offsetLeft - zoomstart.x,
coordObj.clientY - canvas.offsetTop - zoomstart.y);
}
- break;
+ break;
}
}
};
+function drawIfEmpty() {
+ if (!gCurrentImageData) {
+ drawImage();
+ }
+}
+
function toggleSettings() {
var fs = document.getElementById("settings");
if (fs.style.display != "block") {
// use gLastImageData.iWidth, gLastImageData.iHeight ???
adjustCoordsAndDraw(gLastImageData.C_min, gLastImageData.C_max);
gLastImageData = undefined;
+ document.getElementById("backButton").disabled = true;
}
}
projects / mandelbrot-web.git / blobdiff