/* ***** 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 . * Portions created by the Initial Developer are Copyright (C) 2008 * the Initial Developer. All Rights Reserved. * * Contributor(s): * Robert Kaiser * * 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; function Startup() { updateIterMenu(); updatePaletteMenu(); document.getElementById("statusLabel").value = document.getElementById("mbrotBundle").getString("statusEmpty"); } function drawImage() { let canvas = document.getElementById("mbrotImage"); let context = canvas.getContext("2d"); document.getElementById("statusLabel").value = document.getElementById("mbrotBundle").getString("statusDrawing"); 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 < -2) || (Cr_min > 2) || (Cr_max < -2) || (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); 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) || (Ci_min > 2) || (Ci_max < -2) || (Ci_max > 2) || (Ci_min >= Ci_max)) { Ci_min = -2.0; Ci_max = 1.0; } gPref.setCharPref("mandelbrot.last_image.Ci_min", Ci_min); gPref.setCharPref("mandelbrot.last_image.Ci_max", Ci_max); let iterMax = gPref.getIntPref("mandelbrot.iteration_max"); let algorithm = gPref.getCharPref("mandelbrot.use_algorithm"); let iWidth = 0; try { iWidth = gPref.getIntPref("mandelbrot.image.width"); } catch (e) { } if ((iWidth < 10) || (iWidth > 5000)) { iWidth = 300; gPref.setIntPref("mandelbrot.image.width", iWidth); } let iHeight = 0; try { iHeight = gPref.getIntPref("mandelbrot.image.height"); } catch (e) { } if ((iHeight < 10) || (iHeight > 5000)) { iHeight = 300; gPref.setIntPref("mandelbrot.image.height", iHeight); } 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 pixels = []; 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); pixels.push.apply(pixels, drawPoint(context, img_x, img_y, C, iterMax, algorithm)); } context.putImageData({width: canvas.width, height: pixels.length/4/canvas.width, data: pixels}, 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 = document.getElementById("mbrotBundle").getFormattedString("statusTime", [timeUsed.toFixed(3)]); } 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; } /* Select Case palnr Case 1 '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 Case 3 'Regenbogen-Palette 1 (qu.) For i = 0 To 33 clr = CInt(i * 255 / 33) palette(i) = RGB(clr, 0, 0) Next For i = 0 To 136 clr = CInt(i * 255 / 136) palette(34 + i) = RGB(255, clr, 0) Next For i = 0 To 306 clr = CInt(i * 255 / 306) palette(171 + i) = RGB(255 - clr, 255, clr) Next For i = 0 To 545 clr = CInt(i * 255 / 545) palette(478 + i) = RGB(clr, 255 - clr, 255) Next Case 4 'Regenbogen-Palette 2 (linear) For i = 0 To 204 clr = CInt(i * 255 / 204) palette(i) = RGB(255, clr, 0) palette(204 + i) = RGB(255 - clr, 255, 0) palette(409 + i) = RGB(0, 255, clr) palette(614 + i) = RGB(0, 255 - clr, 255) palette(819 + i) = RGB(clr, 0, 255) Next Case 5 'Regenbogen-Palette 2 (qu.) For i = 0 To 18 clr = CInt(i * 255 / 18) palette(i) = RGB(255, clr, 0) Next For i = 0 To 73 clr = CInt(i * 255 / 73) palette(20 + i) = RGB(255 - clr, 255, 0) Next For i = 0 To 167 clr = CInt(i * 255 / 167) palette(93 + i) = RGB(0, 255, clr) Next For i = 0 To 297 clr = CInt(i * 255 / 297) palette(261 + i) = RGB(0, 255 - clr, 255) Next For i = 0 To 464 clr = CInt(i * 255 / 464) palette(559 + i) = RGB(clr, 0, 255) 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 *****/ function saveImage() { const bundle = document.getElementById("mbrotBundle"); const nsIFilePicker = Components.interfaces.nsIFilePicker; var fp = null; try { fp = Components.classes["@mozilla.org/filepicker;1"] .createInstance(nsIFilePicker); } catch (e) {} if (!fp) return; var promptString = bundle.getString("savePrompt"); fp.init(window, promptString, nsIFilePicker.modeSave); fp.appendFilter(bundle.getString("pngFilterName"), "*.png"); fp.defaultString = "mandelbrot.png"; var fpResult = fp.show(); if (fpResult != nsIFilePicker.returnCancel) { saveCanvas(document.getElementById("mbrotImage"), fp.file); } } function updateIterMenu() { try { var currentIter = gPref.getIntPref("mandelbrot.iteration_max"); } catch(e) { var currentIter = 0; } if (currentIter < 10) { currentIter = 500; setIter(currentIter); } var popup = document.getElementById("menu_iterPopup"); var 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() { try { var currentPalette = gPref.getCharPref("mandelbrot.color_palette"); } catch(e) { var currentPalette = ''; } if (!currentPalette.length) { currentPalette = 'kairo'; setPalette(currentPalette); } if (!gColorPalette || !gColorPalette.length) gColorPalette = getColorPalette(currentPalette); var popup = document.getElementById("menu_palettePopup"); var 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() { window.openDialog("chrome://mandelbrot/content/image-settings.xul"); } function updateDebugMenu() { var jitMenuItem = document.getElementById("jitEnabled"); jitMenuItem.setAttribute("checked", gPref.getBoolPref("javascript.options.jit.chrome")); } function toggleJITState(jitMenuItem) { var jitEnabled = !gPref.getBoolPref("javascript.options.jit.chrome"); gPref.setBoolPref("javascript.options.jit.chrome", jitEnabled) jitMenuItem.setAttribute("checked", jitEnabled? "true" : "false"); } function updateAlgoMenu() { try { var currentAlgo = gPref.getCharPref("mandelbrot.use_algorithm"); } catch(e) { var currentAlgo = ''; } if (!currentAlgo.length) { currentAlgo = 'numeric'; setAlgorithm(currentAlgo); } var popup = document.getElementById("menu_algoPopup"); var 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); } /***** 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); }