1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
9 [[15.2,32.1,7.6],[3,0.329,0.15,0.321,0.145,0.709,3,2,4,0.269,0.662],[0,"#000000",3,"#f5f5c1",12,"#158a34",68,"#89e681",100]],
10 [[15.2,32.1,5],[3,0.273,0.117,0.288,0.243,0.348,3,2,4,0.269,0.662],[1,"#000000",3,"#f5f5c1",8,"#158a34",17,"#89e681",20]],
11 [[4,12,1],[2,0.115,0.269,0.523,0.34,0.746,3,4,4,0.028,0.147],[0,"#36065e",0,"#c24242",77,"#8a19b0",91,"#ff9900",99,"#f5c816",99]],
12 [[4,12,1],[3,0.12,0.218,0.267,0.365,0.445,3,4,4,0.028,0.147],[0,"#000000",0,"#0f8a84",38,"#f5f5c1",43,"#158a34",70,"#89e681",100]],
13 [[4,12,1],[0,0.09,0.276,0.27,0.365,0.445,1,4,4,0.028,0.147],[0,"#93afd9",11,"#9cf0ff",92,"#edfdff",100]],
14 [[10.4,12,1],[2,0.082,0.302,0.481,0.35,0.749,2,3,4,0.028,0.147],[0,"#000000",11,"#ffffff",22,"#19a68a",85,"#6b0808",98]],
15 [[7.8,27.2,2.6],[3,0.21,0.714,0.056,0.175,0.838,2,0,2,0.132,0.311],[0,"#0a1340",0,"#ffffff",55,"#4da8a3",83,"#2652ab",99,"#2f1e75",46]],
16 [[4,12,1],[2,0.115,0.269,0.496,0.34,0.767,3,4,4,0.028,0.147],[0,"#b8cfcf",0,"#3f5a5c",77,"#1a330a",91,"#c0e0dc",99]],
17 [[10.6,31.8,1],[1,0.157,0.092,0.256,0.098,0.607,3,4,4,0.015,0.34],[0,"#4d3e3e",0,"#9a1ac9",77,"#aaf09e",100]],
18 [[3.2,34,14.8],[1,0.26,0.172,0.370,0.740,0.697,1,1,4,0.772,0.280],[0,"#3b8191",18,"#66f24f",82,"#698ffe",100]],
19 [[15.3,5.5,33.2],[1,0.746,0.283,0.586,0.702,0.148,1,2,0,0.379,0.633],[1,"#42ae80",77,"#fd1e2e",79,"#58103f",93,"#cf9750",96]],
20 [[2.5,3.5,7.7],[3,0.666,0.779,0.002,0.558,0.786,3,1,3,0.207,0.047],[0,"#a2898d",78,"#60d14e",86,"#5c4dea",90]],
21 [[7.6,7.6,9.0],[1,0.158,0.387,0.234,0.810,0.100,3,0,2,0.029,0.533],[0,"#568b8a",5,"#18ce42",92]]
24 var palettePresets = [
25 [], // Placeholder for the palette of the currently selected preset.
26 [0, '#ffffff', 0, '#000000', 100],
27 [0, '#000000', 0, '#ffffff', 100],
28 [0, '#000000', 0, '#ff00ff', 50, '#000000', 100],
29 [0,"#000000",0,"#0f8a84",38,"#f5f5c1",43,"#158a34",70,"#89e681",100],
30 [1,"#000000",3,"#f5f5c1",8,"#158a34",17,"#89e681",20],
31 [0,"#36065e",0,"#c24242",77,"#8a19b0",91,"#ff9900",99,"#f5c816",99],
32 [0,"#93afd9",11,"#9cf0ff",92,"#edfdff",100],
33 [0,"#000000",11,"#ffffff",22,"#19a68a",85,"#6b0808",98],
34 [0,"#0a1340",0,"#ffffff",55,"#4da8a3",83,"#2652ab",99,"#2f1e75",46],
35 [0,"#b8cfcf",0,"#3f5a5c",77,"#1a330a",91,"#c0e0dc",99],
36 [0,"#4d3e3e",0,"#9a1ac9",77,"#aaf09e",100],
37 [1,"#52d2a1",3,"#c7c5ca",46,"#be6e88",72,"#f5a229",79,"#f0e0d1",94,"#6278d8",100]
41 * A helper function to abbreviate getElementById.
43 * @param {string} elementId The id to get.
46 function $(elementId) {
47 return document.getElementById(elementId);
53 * @return {string} MIME type
55 function PNaClmimeType() {
56 return 'application/x-pnacl';
60 * Check if the browser supports PNaCl.
64 function browserSupportsPNaCl() {
65 var mimetype = PNaClmimeType();
66 return navigator.mimeTypes[mimetype] !== undefined;
70 * Get the URL for Google Cloud Storage.
72 * @param {string} name The relative path to the file.
75 function getDataURL(name) {
76 var revision = '236779';
77 var baseUrl = '//storage.googleapis.com/gonacl/demos/publish/';
78 return baseUrl + revision + '/smoothlife/' + name;
82 * Create the Native Client <embed> element as a child of the DOM element
85 * @param {string} name The name of the example.
86 * @param {number} width The width to create the plugin.
87 * @param {number} height The height to create the plugin.
88 * @param {Object} attrs Dictionary of attributes to set on the module.
90 function createNaClModule(name, width, height, attrs) {
91 var moduleEl = document.createElement('embed');
92 moduleEl.setAttribute('name', 'nacl_module');
93 moduleEl.setAttribute('id', 'nacl_module');
94 moduleEl.setAttribute('width', width);
95 moduleEl.setAttribute('height', height);
96 moduleEl.setAttribute('path', '');
97 moduleEl.setAttribute('src', getDataURL(name + '.nmf'));
98 moduleEl.setAttribute('type', PNaClmimeType());
100 // Add any optional arguments
102 for (var key in attrs) {
103 moduleEl.setAttribute(key, attrs[key]);
107 // The <EMBED> element is wrapped inside a <DIV>, which has both a 'load'
108 // and a 'message' event listener attached. This wrapping method is used
109 // instead of attaching the event listeners directly to the <EMBED> element
110 // to ensure that the listeners are active before the NaCl module 'load'
112 var listenerDiv = $('listener');
113 listenerDiv.appendChild(moduleEl);
117 * Add the default event listeners to the element with id "listener".
119 function attachDefaultListeners() {
120 var listenerDiv = $('listener');
121 listenerDiv.addEventListener('load', moduleDidLoad, true);
122 listenerDiv.addEventListener('error', moduleLoadError, true);
123 listenerDiv.addEventListener('progress', moduleLoadProgress, true);
124 listenerDiv.addEventListener('message', handleMessage, true);
125 listenerDiv.addEventListener('crash', handleCrash, true);
130 * Called when the Browser can not communicate with the Module
132 * This event listener is registered in attachDefaultListeners above.
134 * @param {Object} event
136 function handleCrash(event) {
137 if (naclModule.exitStatus == -1) {
138 updateStatus('CRASHED');
140 updateStatus('EXITED [' + naclModule.exitStatus + ']');
145 * Called when the NaCl module is loaded.
147 * This event listener is registered in attachDefaultListeners above.
149 function moduleDidLoad() {
150 var bar = $('progress-bar');
151 bar.style.width = 100;
152 naclModule = $('nacl_module');
161 * Hide the status field and progress bar.
163 function hideStatus() {
164 $('loading-cover').style.display = 'none';
168 * Called when the plugin fails to load.
170 * @param {Object} event
172 function moduleLoadError(event) {
173 updateStatus('Load failed.');
177 * Called when the plugin reports progress events.
179 * @param {Object} event
181 function moduleLoadProgress(event) {
182 $('progress').style.display = 'block';
184 var loadPercent = 0.0;
185 var bar = $('progress-bar');
187 if (event.lengthComputable && event.total > 0) {
188 loadPercent = event.loaded / event.total * 100.0;
190 // The total length is not yet known.
193 bar.style.width = loadPercent + "%";
197 * If the element with id 'statusField' exists, then set its HTML to the status
200 * @param {string} opt_message The message to set.
202 function updateStatus(opt_message) {
203 var statusField = $('statusField');
205 statusField.style.display = 'block';
206 statusField.textContent = opt_message;
211 * Add event listeners after the NaCl module has loaded. These listeners will
212 * forward messages to the NaCl module via postMessage()
214 function attachListeners() {
215 $('preset').addEventListener('change', loadSelectedPreset);
216 $('palette').addEventListener('change', loadSelectedPalette);
217 $('reset').addEventListener('click', loadSelectedPreset);
218 $('clear').addEventListener('click', function() { clear(0); });
219 $('splat').addEventListener('click', function() { splat(); });
220 $('brushSizeRange').addEventListener('change', function() {
221 var radius = parseFloat(this.value);
222 setBrushSize(radius, 1.0);
223 $('brushSize').textContent = radius.toFixed(1);
225 $('threadCount').addEventListener('change', function() {
226 setThreadCount(parseInt(this.value, 10));
228 $('simSize').addEventListener('change', function() {
229 setSize(parseInt(this.value, 10));
230 // changing the simulation size clears everything, so reset.
231 loadSelectedPreset();
233 $('scale').addEventListener('change', function() {
234 var scale = parseFloat(this.value);
239 setInterval(function() {
243 // Get the size of the embed and the size of the simulation, and
244 // determine the maximum scale.
245 var rect = naclModule.getBoundingClientRect();
246 var embedScale = Math.min(rect.width, rect.height);
247 var simSize = parseInt($('simSize').value, 10);
248 var maxScale = embedScale / simSize;
249 var scaleEl = $('scale');
251 if (scaleEl.max != maxScale) {
252 var minScale = scaleEl.min;
253 scaleEl.disabled = false;
254 var clampedScale = Math.min(maxScale, Math.max(minScale, scaleEl.value));
256 scaleEl.max = maxScale;
258 // Normally the minScale is 0.5, but sometimes maxScale can be less
259 // than that. In that case, set the minScale to maxScale.
260 scaleEl.min = Math.min(maxScale, 0.5);
262 // Reset the value so the input range updates.
264 scaleEl.value = clampedScale;
267 // If max scale is too small, disable zoom.
268 scaleEl.disabled = maxScale < minScale;
272 function updateScaleText() {
273 var percent = (parseFloat($('scale').value) * 100).toFixed(0) + '%'
274 $('scaleValue').textContent = percent;
278 function loadSelectedPreset() {
279 loadPreset($('preset').value);
282 function loadPreset(index) {
283 var preset = presets[index];
284 var selectedPalette = $('palette').value;
287 setKernel.apply(null, preset[0]);
288 setSmoother.apply(null, preset[1]);
289 // Only change the palette if it is set to "Default", which means to use
290 // the preset default palette.
291 if (selectedPalette == 0)
292 setPalette.apply(null, preset[2]);
295 // Save the current palette in slot 0: "Default".
296 palettePresets[0] = preset[2];
299 function loadSelectedPalette() {
300 loadPalette($('palette').value);
303 function loadPalette(index) {
304 setPalette.apply(null, palettePresets[index]);
307 function clear(color) {
308 naclModule.postMessage({cmd: 'clear', color: color});
311 function setSize(size) {
312 naclModule.postMessage({cmd: 'setSize', size: size});
315 function setMaxScale(scale) {
316 naclModule.postMessage({cmd: 'setMaxScale', scale: scale});
319 function setThreadCount(threadCount) {
320 naclModule.postMessage({cmd: 'setThreadCount', threadCount: threadCount});
324 function setKernel(discRadius, ringRadius, blendRadius) {
325 naclModule.postMessage({
327 discRadius: discRadius,
328 ringRadius: ringRadius,
329 blendRadius: blendRadius});
332 function setSmoother(type, dt, b1, d1, b2, d2, mode, sigmoid, mix, sn, sm) {
333 naclModule.postMessage({
336 b1: b1, d1: d1, b2: b2, d2: d2,
337 mode: mode, sigmoid: sigmoid, mix: mix,
341 function setPalette() {
342 var repeating = arguments[0] !== 0;
345 for (var i = 1; i < arguments.length; i += 2) {
346 colors.push(arguments[i]);
347 stops.push(arguments[i + 1]);
349 naclModule.postMessage({
351 repeating: repeating,
357 naclModule.postMessage({cmd: 'splat'});
360 function setBrushSize(radius, color) {
361 naclModule.postMessage({cmd: 'setBrush', radius: radius, color: color});
366 * Handle a message coming from the NaCl module.
367 * @param {Object} message_event
369 function handleMessage(message_event) {
371 $('fps').textContent = message_event.data.toFixed(1);
375 * Listen for the DOM content to be loaded. This event is fired when parsing of
376 * the page's document has finished.
378 document.addEventListener('DOMContentLoaded', function() {
379 updateStatus('Loading...');
380 if (!browserSupportsPNaCl()) {
381 updateStatus('Browser does not support PNaCl or PNaCl is disabled');
382 } else if (naclModule == null) {
383 createNaClModule('smoothnacl', '100%', '100%');
384 attachDefaultListeners();
386 // It's possible that the Native Client module onload event fired
387 // before the page's onload event. In this case, the status message
388 // will reflect 'SUCCESS', but won't be displayed. This call will
389 // display the current message.
390 updateStatus('Waiting.');