X-Git-Url: https://git-public.kairo.at/?p=mandelbrot.git;a=blobdiff_plain;f=xulapp%2Fchrome%2Fmandelbrot%2Fcontent%2Fmandelbrot.js;fp=xulapp%2Fchrome%2Fmandelbrot%2Fcontent%2Fmandelbrot.js;h=0000000000000000000000000000000000000000;hp=1ccebbedd725b884acd92d2358a1210ff4dd1d17;hb=3fd66836e6c5fbd25dd8f90dd50914cabeb7a9a7;hpb=ad2faff87132f18ada1b47149ca76678c1289ad1

diff --git a/xulapp/chrome/mandelbrot/content/mandelbrot.js b/xulapp/chrome/mandelbrot/content/mandelbrot.js
deleted file mode 100644
index 1ccebbe..0000000
--- a/xulapp/chrome/mandelbrot/content/mandelbrot.js
+++ /dev/null
@@ -1,994 +0,0 @@
-/* ***** 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) 2008-2011
- * the Initial Developer. All Rights Reserved.
- *
- * Contributor(s):
- *   Robert Kaiser <kairo@kairo.at>
- *   prefiks (patch for some speedups)
- *   Boris Zbarsky <bzbarsky@mit.edu> (use imageData for canvas interaction)
- *
- * 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 ***** */
-
-var gColorPalette = [];
-var gPref = Components.classes["@mozilla.org/preferences-service;1"]
-                      .getService(Components.interfaces.nsIPrefService)
-                      .getBranch(null);
-var gStartTime = 0;
-var gMbrotBundle;
-var gCurrentImageData;
-
-function Startup() {
-  updateIterMenu();
-  updateAlgoMenu();
-  updatePaletteMenu();
-  gMbrotBundle = document.getElementById("mbrotBundle");
-  document.getElementById("statusLabel").value = gMbrotBundle.getString("statusEmpty");
-}
-
-function getAdjustPref(prefname) {
-  let value;
-  switch (prefname) {
-    case "image.width":
-    case "image.height":
-      value = 0;
-      try {
-        value = gPref.getIntPref("mandelbrot." + prefname);
-      }
-      catch (e) { }
-      if ((value < 10) || (value > 5000)) {
-        value = 300;
-        gPref.setIntPref("mandelbrot." + prefname, value);
-      }
-      return value;
-    case "last_image.Cr_*":
-      let Cr_min = -2.0;
-      let Cr_max = 1.0;
-      try {
-        Cr_min = parseFloat(gPref.getCharPref("mandelbrot.last_image.Cr_min"));
-        Cr_max = parseFloat(gPref.getCharPref("mandelbrot.last_image.Cr_max"));
-      }
-      catch (e) { }
-      if ((Cr_min < -3) || (Cr_min > 2) ||
-          (Cr_max < -3) || (Cr_max > 2) || (Cr_min >= Cr_max)) {
-        Cr_min = -2.0; Cr_max = 1.0;
-      }
-      gPref.setCharPref("mandelbrot.last_image.Cr_min", Cr_min);
-      gPref.setCharPref("mandelbrot.last_image.Cr_max", Cr_max);
-      return {Cr_min: Cr_min, Cr_max: Cr_max};
-    case "last_image.Ci_*":
-      let Ci_min = -1.5;
-      let Ci_max = 1.5;
-      try {
-        Ci_min = parseFloat(gPref.getCharPref("mandelbrot.last_image.Ci_min"));
-        Ci_max = parseFloat(gPref.getCharPref("mandelbrot.last_image.Ci_max"));
-      }
-      catch (e) { }
-      if ((Ci_min < -2.5) || (Ci_min > 2.5) ||
-          (Ci_max < -2.5) || (Ci_max > 2.5) || (Ci_min >= Ci_max)) {
-        Ci_min = -1.5; Ci_max = 1.5;
-      }
-      gPref.setCharPref("mandelbrot.last_image.Ci_min", Ci_min);
-      gPref.setCharPref("mandelbrot.last_image.Ci_max", Ci_max);
-      return {Ci_min: Ci_min, Ci_max: Ci_max};
-    case "iteration_max":
-      value = 500;
-      try {
-        value = gPref.getIntPref("mandelbrot." + prefname);
-      }
-      catch (e) {
-        setIter(value);
-      }
-      if (value < 10 || value > 10000) {
-        value = 500;
-        setIter(value);
-      }
-      return value;
-    case "use_algorithm":
-      value = "numeric";
-      try {
-        value = gPref.getCharPref("mandelbrot." + prefname);
-      }
-      catch (e) {
-        setAlgorithm(value);
-      }
-      return value;
-   case "color_palette":
-      value = "kairo";
-      try {
-        value = gPref.getCharPref("mandelbrot." + prefname);
-      }
-      catch(e) {
-        setPalette(value);
-      }
-      return value;
-   case "syncProportions":
-      value = true;
-      try {
-        value = gPref.getBoolPref("mandelbrot." + prefname);
-      }
-      catch(e) {
-        gPref.setBoolPref("mandelbrot." + prefname, value);
-      }
-      return value;
-    default:
-      return false;
-  }
-}
-
-function adjustCoordsAndDraw(aC_min, aC_max) {
-  let iWidth = getAdjustPref("image.width");
-  let iHeight = getAdjustPref("image.height");
-
-  // correct coordinates
-  if (aC_min.r < -2)
-    aC_min.r = -2;
-  if (aC_max.r > 2)
-    aC_max.r = 2;
-  if ((aC_min.r > 2) || (aC_max.r < -2) || (aC_min.r >= aC_max.r)) {
-    aC_min.r = -2.0; aC_max.r = 1.0;
-  }
-  if (aC_min.i < -2)
-    aC_min.i = -2;
-  if (aC_max.i > 2)
-    aC_max.i = 2;
-  if ((aC_min.i > 2) || (aC_max.i < -2) || (aC_min.i >= aC_max.i)) {
-    aC_min.i = -1.3; aC_max.i = 1.3;
-  }
-
-  let CWidth = aC_max.r - aC_min.r;
-  let CHeight = aC_max.i - aC_min.i;
-  let C_mid = new complex(aC_min.r + CWidth / 2, aC_min.i + CHeight / 2);
-
-  let CRatio = Math.max(CWidth / iWidth, CHeight / iHeight);
-
-  gPref.setCharPref("mandelbrot.last_image.Cr_min", C_mid.r - iWidth * CRatio / 2);
-  gPref.setCharPref("mandelbrot.last_image.Cr_max", C_mid.r + iWidth * CRatio / 2);
-  gPref.setCharPref("mandelbrot.last_image.Ci_min", C_mid.i - iHeight * CRatio / 2);
-  gPref.setCharPref("mandelbrot.last_image.Ci_max", C_mid.i + iHeight * CRatio / 2);
-
-  drawImage();
-}
-
-function drawImage() {
-  let canvas = document.getElementById("mbrotImage");
-  let context = canvas.getContext("2d");
-
-  document.getElementById("drawButton").hidden = true;
-
-  document.getElementById("statusLabel").value = gMbrotBundle.getString("statusDrawing");
-
-  let Cr_vals = getAdjustPref("last_image.Cr_*");
-  let Cr_min = Cr_vals.Cr_min;
-  let Cr_max = Cr_vals.Cr_max;
-
-  let Ci_vals = getAdjustPref("last_image.Ci_*");
-  let Ci_min = Ci_vals.Ci_min;
-  let Ci_max = Ci_vals.Ci_max;
-
-  let iterMax = getAdjustPref("iteration_max");
-  let algorithm = getAdjustPref("use_algorithm");
-
-  let iWidth = getAdjustPref("image.width");
-  let iHeight = getAdjustPref("image.height");
-
-  gCurrentImageData = {
-    C_min: new complex(Cr_min, Ci_min),
-    C_max: new complex(Cr_max, Ci_max),
-    iWidth: iWidth,
-    iHeight: iHeight,
-    iterMax: iterMax
-  };
-
-  canvas.width = iWidth;
-  canvas.height = iHeight;
-
-  context.fillStyle = "rgba(255, 255, 255, 127)";
-  context.fillRect(0, 0, canvas.width, canvas.height);
-
-  gStartTime = new Date();
-
-  drawLine(0, [Cr_min, Cr_max, Ci_min, Ci_max],
-              canvas, context, iterMax, algorithm);
-}
-
-function drawLine(line, dimensions, canvas, context, iterMax, algorithm) {
-  let Cr_min = dimensions[0];
-  let Cr_max = dimensions[1];
-  let Cr_scale = Cr_max - Cr_min;
-
-  let Ci_min = dimensions[2];
-  let Ci_max = dimensions[3];
-  let Ci_scale = Ci_max - Ci_min;
-
-  let lines = Math.min(canvas.height - line, 8);
-  let imageData = context.createImageData(canvas.width, lines);
-  let pixels = imageData.data;
-  let idx = 0;
-  for (var img_y = line; img_y < canvas.height && img_y < line+8; img_y++)
-    for (let img_x = 0; img_x < canvas.width; img_x++) {
-      let C = new complex(Cr_min + (img_x / canvas.width) * Cr_scale,
-                          Ci_min + (img_y / canvas.height) * Ci_scale);
-      let colors = drawPoint(context, img_x, img_y, C, iterMax, algorithm);
-      pixels[idx++] = colors[0];
-      pixels[idx++] = colors[1];
-      pixels[idx++] = colors[2];
-      pixels[idx++] = colors[3];
-    }
-  context.putImageData(imageData, 0, line);
-
-  if (img_y < canvas.height)
-    setTimeout(drawLine, 0, img_y, dimensions, canvas, context, iterMax, algorithm);
-  else if (gStartTime)
-    EndCalc();
-}
-
-function EndCalc() {
-  let endTime = new Date();
-  let timeUsed = (endTime.getTime() - gStartTime.getTime()) / 1000;
-  document.getElementById("statusLabel").value =
-      gMbrotBundle.getFormattedString("statusTime", [timeUsed.toFixed(3)]);
-  gStartTime = 0;
-}
-
-function complex(aReal, aImag) {
-  this.r = aReal;
-  this.i = aImag;
-}
-complex.prototype = {
-  square: function() {
-    return new complex(this.r * this.r - this.i * this.i,
-                       2 * this.r * this.i);
-  },
-  dist: function() {
-    return Math.sqrt(this.r * this.r + this.i * this.i);
-  },
-  add: function(aComplex) {
-    return new complex(this.r + aComplex.r, this.i + aComplex.i);
-  }
-}
-
-function mandelbrotValueOO (aC, aIterMax) {
-  // this would be nice code in general but it looks like JS objects are too heavy for normal use.
-  let Z = new complex(0.0, 0.0);
-  for (var iter = 0; iter < aIterMax; iter++) {
-    Z = Z.square().add(aC);
-    if (Z.r * Z.r + Z.i * Z.i > 256) { break; }
-  }
-  return iter;
-}
-
-function mandelbrotValueNumeric (aC, aIterMax) {
-  // optimized numeric code for fast calculation
-  let Cr = aC.r, Ci = aC.i;
-  let Zr = 0.0, Zi = 0.0;
-  let Zr2 = Zr * Zr, Zi2 = Zi * Zi;
-  for (var iter = 0; iter < aIterMax; iter++) {
-    Zi = 2 * Zr * Zi + Ci;
-    Zr = Zr2 - Zi2 + Cr;
-
-    Zr2 = Zr * Zr; Zi2 = Zi * Zi;
-    if (Zr2 + Zi2 > 256) { break; }
-  }
-  return iter;
-}
-
-function getColor(aIterValue, aIterMax) {
-  let standardizedValue = Math.round(aIterValue * 1024 / aIterMax);
-  if (gColorPalette && gColorPalette.length)
-    return gColorPalette[standardizedValue];
-
-  // fallback to simple b/w if for some reason we don't have a palette
-  if (aIterValue == aIterMax)
-    return [0, 0, 0, 255];
-  else
-    return [255, 255, 255, 255];
-}
-
-function getColorPalette(palName) {
-  var palette = [];
-  switch (palName) {
-    case 'bw':
-      for (let i = 0; i < 1024; i++) {
-        palette[i] = [255, 255, 255, 255];
-      }
-      palette[1024] = [0, 0, 0, 255];
-      break;
-    case 'kairo':
-      // outer areas
-      for (let i = 0; i < 32; i++) {
-        let cc1 = Math.floor(i * 127 / 31);
-        let cc2 = 170 - Math.floor(i * 43 / 31);
-        palette[i] = [cc1, cc2, cc1, 255];
-      }
-      // inner areas
-      for (let i = 0; i < 51; i++) {
-        let cc = Math.floor(i * 170 / 50);
-        palette[32 + i] = [cc, 0, (170-cc), 255];
-      }
-      // corona
-      for (let i = 0; i < 101; i++) {
-        let cc = Math.floor(i * 200 / 100);
-        palette[83 + i] = [255, cc, 0, 255];
-      }
-      // inner corona
-      for (let i = 0; i < 201; i++) {
-        let cc1 = 255 - Math.floor(i * 85 / 200);
-        let cc2 = 200 - Math.floor(i * 30 / 200);
-        let cc3 = Math.floor(i * 170 / 200);
-        palette[184 + i] = [cc1, cc2, cc3, 255];
-      }
-      for (let i = 0; i < 301; i++) {
-        let cc1 = 170 - Math.floor(i * 43 / 300);
-        let cc2 = 170 + Math.floor(i * 85 / 300);
-        palette[385 + i] = [cc1, cc1, cc2, 255];
-      }
-      for (let i = 0; i < 338; i++) {
-        let cc = 127 + Math.floor(i * 128 / 337);
-        palette[686 + i] = [cc, cc, 255, 255];
-      }
-      palette[1024] = [0, 0, 0, 255];
-      break;
-    case 'rainbow-linear1':
-      for (let i = 0; i < 256; i++) {
-        palette[i] = [i, 0, 0, 255];
-        palette[256 + i] = [255, i, 0, 255];
-        palette[512 + i] = [255 - i, 255, i, 255];
-        palette[768 + i] = [i, 255-i, 255, 255];
-      }
-      palette[1024] = [0, 0, 0, 255];
-      break;
-    case 'rainbow-squared1':
-      for (let i = 0; i < 34; i++) {
-        let cc = Math.floor(i * 255 / 33);
-        palette[i] = [cc, 0, 0, 255];
-      }
-      for (let i = 0; i < 137; i++) {
-        let cc = Math.floor(i * 255 / 136);
-        palette[34 + i] = [255, cc, 0, 255];
-      }
-      for (let i = 0; i < 307; i++) {
-        let cc = Math.floor(i * 255 / 306);
-        palette[171 + i] = [255 - cc, 255, cc, 255];
-      }
-      for (let i = 0; i < 546; i++) {
-        let cc = Math.floor(i * 255 / 545);
-        palette[478 + i] = [cc, 255 - cc, 255, 255];
-      }
-      palette[1024] = [0, 0, 0, 255];
-      break;
-    case 'rainbow-linear2':
-      for (let i = 0; i < 205; i++) {
-        let cc = Math.floor(i * 255 / 204);
-        palette[i] = [255, cc, 0, 255];
-        palette[204 + i] = [255 - cc, 255, 0, 255];
-        palette[409 + i] = [0, 255, cc, 255];
-        palette[614 + i] = [0, 255 - cc, 255, 255];
-        palette[819 + i] = [cc, 0, 255, 255];
-      }
-      palette[1024] = [0, 0, 0, 255];
-      break;
-    case 'rainbow-squared2':
-      for (let i = 0; i < 19; i++) {
-        let cc = Math.floor(i * 255 / 18);
-        palette[i] = [255, cc, 0, 255];
-      }
-      for (let i = 0; i < 74; i++) {
-        let cc = Math.floor(i * 255 / 73);
-        palette[19 + i] = [255 - cc, 255, 0, 255];
-      }
-      for (let i = 0; i < 168; i++) {
-        let cc = Math.floor(i * 255 / 167);
-        palette[93 + i] = [0, 255, cc, 255];
-      }
-      for (let i = 0; i < 298; i++) {
-        let cc = Math.floor(i * 255 / 297);
-        palette[261 + i] = [0, 255 - cc, 255, 255];
-      }
-      for (let i = 0; i < 465; i++) {
-        let cc = Math.floor(i * 255 / 464);
-        palette[559 + i] = [cc, 0, 255, 255];
-      }
-      palette[1024] = [0, 0, 0, 255];
-      break;
-  }
-  /*
-     'Standard-Palette (QB-Colors)
-     For i = 0 To 1024
-         xx = CInt(i * 500 / 1024 + 2)
-         If xx <= 15 Then clr = xx
-         If xx > 15 Then clr = CInt(Sqr((xx - 15 + 1) * 15 ^ 2 / 485))
-         If xx >= 500 Then clr = 0
-         palette(i) = QBColor(clr)
-     Next
-  */
-  return palette;
-}
-
-function drawPoint(context, img_x, img_y, C, iterMax, algorithm) {
-  var itVal;
-  switch (algorithm) {
-    case 'oo':
-      itVal = mandelbrotValueOO(C, iterMax);
-      break;
-    case 'numeric':
-    default:
-      itVal = mandelbrotValueNumeric(C, iterMax);
-      break;
-  }
-  return getColor(itVal, iterMax);
-}
-
-/***** pure UI functions *****/
-
-var zoomstart;
-var imgBackup;
-
-function mouseevent(etype, event) {
-  let canvas = document.getElementById("mbrotImage");
-  let context = canvas.getContext("2d");
-  switch (etype) {
-    case 'down':
-      if (event.button == 0) {
-        // left button - start dragzoom
-        zoomstart = {x: event.clientX - canvas.offsetLeft,
-                     y: event.clientY - canvas.offsetTop};
-        imgBackup = context.getImageData(0, 0, canvas.width, canvas.height);
-      }
-      break;
-    case 'up':
-      if (event.button == 0 && zoomstart) {
-        context.putImageData(imgBackup, 0, 0);
-        let zoomend = {x: event.clientX - canvas.offsetLeft,
-                       y: event.clientY - canvas.offsetTop};
-
-        // make sure zoomend is bigger than zoomstart
-        if ((zoomend.x == zoomstart.x) || (zoomend.y == zoomstart.y)) {
-          // cannot zoom what has no area, discard it
-          zoomstart = undefined;
-          return;
-        }
-        if (zoomend.x < zoomstart.x)
-          [zoomend.x, zoomstart.x] = [zoomstart.x, zoomend.x];
-        if (zoomend.y < zoomstart.y)
-          [zoomend.y, zoomstart.y] = [zoomstart.y, zoomend.y];
-
-        // determine new "coordinates"
-        let CWidth = gCurrentImageData.C_max.r - gCurrentImageData.C_min.r;
-        let CHeight = gCurrentImageData.C_max.i - gCurrentImageData.C_min.i;
-        let newC_min = new complex(
-            gCurrentImageData.C_min.r + zoomstart.x / gCurrentImageData.iWidth * CWidth,
-            gCurrentImageData.C_min.i + zoomstart.y / gCurrentImageData.iHeight * CHeight);
-        let newC_max = new complex(
-            gCurrentImageData.C_min.r + zoomend.x / gCurrentImageData.iWidth * CWidth,
-            gCurrentImageData.C_min.i + zoomend.y / gCurrentImageData.iHeight * CHeight);
-
-        adjustCoordsAndDraw(newC_min, newC_max);
-      }
-      zoomstart = undefined;
-      break;
-    case 'move':
-      if (event.button == 0 && zoomstart) {
-        context.putImageData(imgBackup, 0, 0);
-        context.strokeStyle = "rgb(255,255,31)";
-        context.strokeRect(zoomstart.x, zoomstart.y,
-                           event.clientX - canvas.offsetLeft - zoomstart.x,
-                           event.clientY - canvas.offsetTop - zoomstart.y);
-      }
-    break;
-  }
-}
-
-function saveImage() {
-  const nsIFilePicker = Components.interfaces.nsIFilePicker;
-  let fp = null;
-  try {
-    fp = Components.classes["@mozilla.org/filepicker;1"]
-                   .createInstance(nsIFilePicker);
-  } catch (e) {}
-  if (!fp) return;
-  let promptString = gMbrotBundle.getString("savePrompt");
-  fp.init(window, promptString, nsIFilePicker.modeSave);
-  fp.appendFilter(gMbrotBundle.getString("pngFilterName"), "*.png");
-  fp.defaultString = "mandelbrot.png";
-
-  let fpResult = fp.show();
-  if (fpResult != nsIFilePicker.returnCancel) {
-    saveCanvas(document.getElementById("mbrotImage"), fp.file);
-  }
-}
-
-function exitMandelbrot() {
-  var appInfo = Components.classes["@mozilla.org/xre/app-info;1"]
-                          .getService(Components.interfaces.nsIXULAppInfo);
-  if (appInfo.ID == "mandelbrot@kairo.at")
-    quitApp(false);
-  else
-    window.close();
-}
-
-function updateBookmarkMenu(aParent) {
-  document.getElementById("bookmarkSave").disabled =
-    (!document.getElementById("drawButton").hidden || (gStartTime > 0));
-
-  while (aParent.hasChildNodes() &&
-         aParent.lastChild.id != "bookmarkSeparator")
-    aParent.removeChild(aParent.lastChild);
-
-  let file = Components.classes["@mozilla.org/file/directory_service;1"]
-                       .getService(Components.interfaces.nsIProperties)
-                       .get("ProfD", Components.interfaces.nsIFile);
-  file.append("mandelbookmarks.sqlite");
-  if (file.exists()) {
-    let connection = Components.classes["@mozilla.org/storage/service;1"]
-                               .getService(Components.interfaces.mozIStorageService)
-                               .openDatabase(file);
-    try {
-      if (connection.tableExists("bookmarks")) {
-        let statement = connection.createStatement(
-            "SELECT name,ROWID FROM bookmarks ORDER BY ROWID ASC");
-        while (statement.executeStep()) {
-          let newItem = aParent.appendChild(document.createElement("menuitem"));
-          newItem.setAttribute("label", statement.getString(0));
-          newItem.setAttribute("bmRowID", statement.getString(1));
-        }
-        statement.reset();
-        statement.finalize();
-        return;
-      }
-    } finally {
-      connection.close();
-    }
-  }
-  // Create the "Nothing Available" Menu item and disable it.
-  let na = aParent.appendChild(document.createElement("menuitem"));
-  na.setAttribute("label", gMbrotBundle.getString("noBookmarks"));
-  na.setAttribute("disabled", "true");
-}
-
-function callBookmark(evtarget) {
-  if (evtarget.id == "bookmarkSave" || evtarget.id == "bookmarkSeparator")
-    return;
-  if (evtarget.id == "bookmarkOverview") {
-    adjustCoordsAndDraw(new complex(0,0), new complex(0,0));
-    return;
-  }
-
-  if (evtarget.getAttribute('bmRowID')) {
-    let iterMax = 0;
-    let C_min = null;
-    let C_max = null;
-
-    let file = Components.classes["@mozilla.org/file/directory_service;1"]
-                         .getService(Components.interfaces.nsIProperties)
-                         .get("ProfD", Components.interfaces.nsIFile);
-    file.append("mandelbookmarks.sqlite");
-    let connection = Components.classes["@mozilla.org/storage/service;1"]
-                               .getService(Components.interfaces.mozIStorageService)
-                               .openDatabase(file);
-    let statement = connection.createStatement(
-        "SELECT iteration_max,Cr_min,Cr_max,Ci_min,Ci_max FROM bookmarks WHERE ROWID=?1");
-    statement.bindStringParameter(0, evtarget.getAttribute('bmRowID'));
-    while (statement.executeStep()) {
-      iterMax = statement.getInt32(0);
-      C_min = new complex(statement.getDouble(1), statement.getDouble(3));
-      C_max = new complex(statement.getDouble(2), statement.getDouble(4));
-    }
-    statement.finalize();
-    connection.close();
-
-    if (iterMax && C_min && C_max) {
-      gPref.setIntPref("mandelbrot.iteration_max", iterMax);
-      adjustCoordsAndDraw(C_min, C_max);
-    }
-  }
-}
-
-function saveBookmark() {
-  // retrieve wanted bookmark name with a prompt
-  let prompts = Components.classes["@mozilla.org/embedcomp/prompt-service;1"]
-                          .getService(Components.interfaces.nsIPromptService);
-  let input = {value: ""}; // empty default value
-  let ok = prompts.prompt(null, gMbrotBundle.getString("saveBookmarkTitle"), gMbrotBundle.getString("saveBookmarkLabel"), input, null, {});
-  // ok is true if OK is pressed, false if Cancel. input.value holds the value of the edit field if "OK" was pressed.
-  if (!ok || !input.value)
-    return
-
-  let bmName = input.value;
-
-  // Open or create the bookmarks database.
-  let file = Components.classes["@mozilla.org/file/directory_service;1"]
-                       .getService(Components.interfaces.nsIProperties)
-                       .get("ProfD", Components.interfaces.nsIFile);
-  file.append("mandelbookmarks.sqlite");
-  let connection = Components.classes["@mozilla.org/storage/service;1"]
-                             .getService(Components.interfaces.mozIStorageService)
-                             .openDatabase(file);
-  connection.beginTransaction();
-  if (!connection.tableExists("bookmarks"))
-    connection.createTable("bookmarks", "name TEXT, iteration_max INTEGER, Cr_min REAL, Cr_max REAL, Ci_min REAL, Ci_max REAL");
-  // NULL. The value is a NULL value.
-  // INTEGER. The value is a signed integer, stored in 1, 2, 3, 4, 6, or 8 bytes depending on the magnitude of the value.
-  // REAL. The value is a floating point value, stored as an 8-byte IEEE floating point number.
-  // TEXT. The value is a text string, stored using the database encoding (UTF-8, UTF-16BE or UTF-16-LE).
-
-  // Put value of the current image into the bookmarks table
-  let statement = connection.createStatement(
-      "INSERT INTO bookmarks (name,iteration_max,Cr_min,Cr_max,Ci_min,Ci_max) VALUES (?1,?2,?3,?4,?5,?6)");
-  statement.bindStringParameter(0, bmName);
-  statement.bindStringParameter(1, gCurrentImageData.iterMax);
-  statement.bindStringParameter(2, gCurrentImageData.C_min.r);
-  statement.bindStringParameter(3, gCurrentImageData.C_max.r);
-  statement.bindStringParameter(4, gCurrentImageData.C_min.i);
-  statement.bindStringParameter(5, gCurrentImageData.C_max.i);
-  statement.execute();
-  statement.finalize();
-  connection.commitTransaction();
-  connection.close();
-}
-
-function updateIterMenu() {
-  let currentIter = getAdjustPref("iteration_max");
-
-  let popup = document.getElementById("menu_iterPopup");
-  let item = popup.firstChild;
-  while (item) {
-    if (item.getAttribute("name") == "iter") {
-      if (item.getAttribute("value") == currentIter)
-        item.setAttribute("checked","true");
-      else
-        item.removeAttribute("checked");
-    }
-    item = item.nextSibling;
-  }
-}
-
-function setIter(aIter) {
-  gPref.setIntPref("mandelbrot.iteration_max", aIter);
-}
-
-function updatePaletteMenu() {
-  let currentPalette = getAdjustPref("color_palette");
-  if (!gColorPalette || !gColorPalette.length)
-    gColorPalette = getColorPalette(currentPalette);
-
-  let popup = document.getElementById("menu_palettePopup");
-  let item = popup.firstChild;
-  while (item) {
-    if (item.getAttribute("name") == "palette") {
-      if (item.getAttribute("value") == currentPalette)
-        item.setAttribute("checked", "true");
-      else
-        item.removeAttribute("checked");
-    }
-    item = item.nextSibling;
-  }
-}
-
-function setPalette(aPaletteID) {
-  gPref.setCharPref("mandelbrot.color_palette", aPaletteID);
-  gColorPalette = getColorPalette(aPaletteID);
-}
-
-function imgSettings() {
-  let anchor = null;
-  let position = "before_start";
-  if (document.getElementById("mandelbrotWindow").nodeName == "page") {
-    anchor = document.getElementById("mandelbrotToolbar");
-  }
-  else {
-    anchor = document.getElementById("mandelbrotMenubar");
-    position = "after_start";
-  }
-  document.getElementById("imgSettingsPanel").showPopup(anchor, position);
-}
-
-function updateDebugMenu() {
-  let scope = (document.getElementById("mandelbrotWindow").nodeName == "page") ? "content" : "chrome";
-  try {
-    // This throws in versions that don't have JaegerMonkey yet --> catch block
-    gPref.getBoolPref("javascript.options.methodjit." + scope);
-
-    // We have JaegerMonkey, i.e. two prefs for trace/method JIT
-    for each (let type in ["tracejit", "methodjit"]) {
-      let jitMenuItem = document.getElementById(type + "Enabled");
-      jitMenuItem.setAttribute("checked", gPref.getBoolPref("javascript.options." + type + "." + scope));
-    }
-  }
-  catch (e) {
-    // We have TraceMonkey only, i.e. one JIT pref, care only that is displayed
-    for each (let type in ["tracejit", "methodjit"])
-      document.getElementById(type + "Enabled").hidden = true;
-    let jitMenuItem = document.getElementById("jitEnabled");
-    jitMenuItem.hidden = false;
-    jitMenuItem.setAttribute("checked", gPref.getBoolPref("javascript.options.jit." + scope));
-  }
-}
-
-function toggleJITState(jitMenuItem, jittype) {
-  let scope = (document.getElementById("mandelbrotWindow").nodeName == "page") ? "content" : "chrome";
-  let jitpref = "javascript.options." + jittype + "jit." + scope;
-  let jitEnabled = !gPref.getBoolPref(jitpref);
-  gPref.setBoolPref(jitpref, jitEnabled)
-  jitMenuItem.setAttribute("checked", jitEnabled ? "true" : "false");
-}
-
-function updateAlgoMenu() {
-  let currentAlgo = getAdjustPref("use_algorithm");
-
-  let popup = document.getElementById("menu_algoPopup");
-  let item = popup.firstChild;
-  while (item) {
-    if (item.getAttribute("name") == "algorithm") {
-      if (item.getAttribute("value") == currentAlgo)
-        item.setAttribute("checked", "true");
-      else
-        item.removeAttribute("checked");
-    }
-    item = item.nextSibling;
-  }
-}
-
-function setAlgorithm(algoID) {
-  gPref.setCharPref("mandelbrot.use_algorithm", algoID);
-}
-
-function addonsManager(aPane) {
-  let theEM = Components.classes["@mozilla.org/appshell/window-mediator;1"]
-                        .getService(Components.interfaces.nsIWindowMediator)
-                        .getMostRecentWindow("Extension:Manager");
-  if (theEM) {
-    theEM.focus();
-    if (aPane)
-      theEM.showView(aPane);
-    return;
-  }
-
-  const EMURL = "chrome://mozapps/content/extensions/extensions.xul";
-  const EMFEATURES = "all,dialog=no";
-  if (aPane)
-    window.openDialog(EMURL, "", EMFEATURES, aPane);
-  else
-    window.openDialog(EMURL, "", EMFEATURES);
-}
-
-function errorConsole() {
-  toOpenWindowByType("global:console", "chrome://global/content/console.xul");
-}
-
-function initImgSettings() {
-  // Get values from prefs.
-  for each (let coord in ["Cr", "Ci"]) {
-    let coord_vals = getAdjustPref("last_image." + coord + "_*");
-    document.getElementById("is_" + coord + "_min").value = coord_vals[coord + "_min"];
-    document.getElementById("is_" + coord + "_max").value = coord_vals[coord + "_max"];
-  }
-  for each (let dim in ["width", "height"]) {
-    document.getElementById("is_img_" + dim).value = getAdjustPref("image." + dim);
-  }
-  document.getElementById("is_syncProp").checked = getAdjustPref("syncProportions");
-
-  // Calculate scales.
-  recalcCoord("Cr", "scale");
-  recalcCoord("Ci", "scale");
-
-  // Clear the preview.
-  let canvas = document.getElementById("is_mbrotPreview");
-  let context = canvas.getContext("2d");
-  context.fillStyle = "rgba(255, 255, 255, 127)";
-  context.fillRect(0, 0, canvas.width, canvas.height);
-}
-
-function closeImgSettings() {
-  // Hide popup, which will automatically make a call to save values.
-  document.getElementById("imgSettingsPanel").hidePopup();
-}
-
-function saveImgSettings() {
-  // Get values to prefs.
-  for each (let coord in ["Cr_min", "Cr_max", "Ci_min", "Ci_max"]) {
-    gPref.setCharPref("mandelbrot.last_image." + coord,
-                      document.getElementById("is_" + coord).value);
-  }
-  for each (let dim in ["width", "height"]) {
-    gPref.setIntPref("mandelbrot.image." + dim,
-                     document.getElementById("is_img_" + dim).value);
-  }
-  gPref.setBoolPref("mandelbrot.syncProportions",
-                    document.getElementById("is_syncProp").checked);
-}
-
-function checkISValue(textbox, type) {
-  if (type == "coord") {
-    textbox.value = roundCoord(parseFloat(textbox.value));
-  }
-  else if (type == "dim") {
-    textbox.value = parseInt(textbox.value);
-  }
-}
-
-function drawPreview() {
-  let canvas = document.getElementById("is_mbrotPreview");
-  let context = canvas.getContext("2d");
-
-  if (document.getElementById("is_img_width").value /
-      document.getElementById("is_img_height").value
-        < 80 / 50) {
-    canvas.height = 50;
-    canvas.width = canvas.height *
-      document.getElementById("is_img_width").value /
-      document.getElementById("is_img_height").value;
-  }
-  else {
-    canvas.width = 80;
-    canvas.height = canvas.width *
-      document.getElementById("is_imgHeight").value /
-      document.getElementById("is_imgWidth").value;
-  }
-
-  let Cr_min = parseFloat(document.getElementById("is_Cr_min").value);
-  let Cr_max = parseFloat(document.getElementById("is_Cr_max").value);
-  if ((Cr_min < -2) || (Cr_min > 2) ||
-      (Cr_max < -2) || (Cr_max > 2) || (Cr_min >= Cr_max)) {
-    Cr_min = -2.0; Cr_max = 1.0;
-  }
-
-  let Ci_min = parseFloat(document.getElementById("is_Ci_min").value);
-  let Ci_max = parseFloat(document.getElementById("is_Ci_max").value);
-  if ((Ci_min < -2) || (Ci_min > 2) ||
-      (Ci_max < -2) || (Ci_max > 2) || (Ci_min >= Ci_max)) {
-    Ci_min = -2.0; Ci_max = 1.0;
-  }
-
-  let iterMax = getAdjustPref("iteration_max");
-  let algorithm = getAdjustPref("use_algorithm");
-
-  context.fillStyle = "rgba(255, 255, 255, 127)";
-  context.fillRect(0, 0, canvas.width, canvas.height);
-
-  let currentPalette = getAdjustPref("color_palette");
-  gColorPalette = getColorPalette(currentPalette);
-
-  drawLine(0, [Cr_min, Cr_max, Ci_min, Ci_max],
-              canvas, context, iterMax, algorithm);
-}
-
-function recalcCoord(coord, target) {
-  let othercoord = (coord == "Ci") ? "Cr" : "Ci";
-  let owndim = (coord == "Ci") ? "height" : "width";
-  let otherdim = (coord == "Ci") ? "width" : "height";
-  if (target == "scale") {
-    var myscale =
-      parseFloat(document.getElementById("is_" + coord + "_max").value) -
-      parseFloat(document.getElementById("is_" + coord + "_min").value);
-    document.getElementById("is_" + coord + "_scale").value = roundCoord(myscale);
-  }
-  else if (target == 'max') {
-    let mymax =
-      parseFloat(document.getElementById("is_" + coord + "_min").value) +
-      parseFloat(document.getElementById("is_" + coord + "_scale").value);
-    document.getElementById("is_" + coord + "_max").value = roundCoord(mymax);
-    var myscale = document.getElementById("is_" + coord + "_scale").value;
-  }
-  if (document.getElementById("is_syncProp").checked) {
-    let otherscale = myscale *
-      document.getElementById("is_img_" + otherdim).value /
-      document.getElementById("is_img_" + owndim).value;
-    document.getElementById("is_" + othercoord + "_scale").value = roundCoord(otherscale);
-    let othermax =
-      parseFloat(document.getElementById("is_" + othercoord + "_min").value) +
-      parseFloat(document.getElementById("is_" + othercoord + "_scale").value);
-    document.getElementById("is_" + othercoord + "_max").value = roundCoord(othermax);
-  }
-}
-
-function checkProportions() {
-  if (!document.getElementById("is_syncProp").checked) {
-    recalcCoord("Cr", "scale");
-  }
-}
-
-function roundCoord(floatval) {
-  // We should round to 10 decimals here or so
-  return parseFloat(floatval.toFixed(10));
-}
-
-/***** helper functions from external sources *****/
-
-// function below is based on http://developer.mozilla.org/en/docs/Code_snippets:Canvas
-// custom modifications:
-//   - use "a"-prefix on function arguments
-//   - take an nsILocalFile as aDestFile argument
-//   - always do silent download
-function saveCanvas(aCanvas, aDestFile) {
-  // create a data url from the canvas and then create URIs of the source and targets  
-  var io = Components.classes["@mozilla.org/network/io-service;1"]
-                     .getService(Components.interfaces.nsIIOService);
-  var source = io.newURI(aCanvas.toDataURL("image/png", ""), "UTF8", null);
-
-  // prepare to save the canvas data
-  var persist = Components.classes["@mozilla.org/embedding/browser/nsWebBrowserPersist;1"]
-                          .createInstance(Components.interfaces.nsIWebBrowserPersist);
-
-  persist.persistFlags = Components.interfaces.nsIWebBrowserPersist.PERSIST_FLAGS_REPLACE_EXISTING_FILES;
-  persist.persistFlags |= Components.interfaces.nsIWebBrowserPersist.PERSIST_FLAGS_AUTODETECT_APPLY_CONVERSION;
-
-  // save the canvas data to the file
-  persist.saveURI(source, null, null, null, null, aDestFile);
-}
-
-// function below is from http://developer.mozilla.org/en/docs/How_to_Quit_a_XUL_Application
-function quitApp(aForceQuit) {
-  var appStartup = Components.classes['@mozilla.org/toolkit/app-startup;1']
-                             .getService(Components.interfaces.nsIAppStartup);
-
-  // eAttemptQuit will try to close each XUL window, but the XUL window can cancel the quit
-  // process if there is unsaved data. eForceQuit will quit no matter what.
-  var quitSeverity = aForceQuit ? Components.interfaces.nsIAppStartup.eForceQuit :
-                                  Components.interfaces.nsIAppStartup.eAttemptQuit;
-  appStartup.quit(quitSeverity);
-}
-
-// functions below are from comm-central/suite/common/tasksOverlay.js
-function toOpenWindow(aWindow) {
-  try {
-    // Try to focus the previously focused window e.g. message compose body
-    aWindow.document.commandDispatcher.focusedWindow.focus();
-  } catch (e) {
-    // e.g. full-page plugin or non-XUL document; just raise the top window
-    aWindow.focus();
-  }
-}
-
-function toOpenWindowByType(inType, uri, features) {
-  // don't do several loads in parallel
-  if (uri in window)
-    return;
-
-  var topWindow = Components.classes["@mozilla.org/appshell/window-mediator;1"]
-                            .getService(Components.interfaces.nsIWindowMediator)
-                            .getMostRecentWindow(inType);
-  if ( topWindow )
-    toOpenWindow( topWindow );
-  else {
-    // open the requested window, but block it until it's fully loaded
-    function newWindowLoaded(event) {
-      // make sure that this handler is called only once
-      window.removeEventListener("unload", newWindowLoaded, false);
-      window[uri].removeEventListener("load", newWindowLoaded, false);
-      delete window[uri];
-    }
-    // remember the newly loading window until it's fully loaded
-    // or until the current window passes away
-    window[uri] = window.openDialog(uri, "", features || "all,dialog=no");
-    window[uri].addEventListener("load", newWindowLoaded, false);
-    window.addEventListener("unload", newWindowLoaded, false);
-  }
-}