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5b823560 RK |
1 | /* ***** BEGIN LICENSE BLOCK ***** |
2 | * Version: MPL 1.1/GPL 2.0/LGPL 2.1 | |
3 | * | |
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/ | |
8 | * | |
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 | |
12 | * License. | |
13 | * | |
14 | * The Original Code is KaiRo.at Mandelbrot, XULRunner version. | |
15 | * | |
16 | * The Initial Developer of the Original Code is | |
17 | * Robert Kaiser <kairo@kairo.at>. | |
8a2b6e17 | 18 | * Portions created by the Initial Developer are Copyright (C) 2008-2011 |
5b823560 RK |
19 | * the Initial Developer. All Rights Reserved. |
20 | * | |
21 | * Contributor(s): | |
22 | * Robert Kaiser <kairo@kairo.at> | |
8a2b6e17 RK |
23 | * prefiks (patch for some speedups) |
24 | * Boris Zbarsky <bzbarsky@mit.edu> (use imageData for canvas interaction) | |
5b823560 RK |
25 | * |
26 | * Alternatively, the contents of this file may be used under the terms of | |
27 | * either the GNU General Public License Version 2 or later (the "GPL"), or | |
28 | * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), | |
29 | * in which case the provisions of the GPL or the LGPL are applicable instead | |
30 | * of those above. If you wish to allow use of your version of this file only | |
31 | * under the terms of either the GPL or the LGPL, and not to allow others to | |
32 | * use your version of this file under the terms of the MPL, indicate your | |
33 | * decision by deleting the provisions above and replace them with the notice | |
34 | * and other provisions required by the GPL or the LGPL. If you do not delete | |
35 | * the provisions above, a recipient may use your version of this file under | |
36 | * the terms of any one of the MPL, the GPL or the LGPL. | |
37 | * | |
38 | * ***** END LICENSE BLOCK ***** */ | |
39 | ||
140e460f RK |
40 | Components.utils.import("resource://gre/modules/Services.jsm"); |
41 | ||
6e98af87 | 42 | var gColorPalette = []; |
6e98af87 | 43 | var gStartTime = 0; |
fa4ecb24 | 44 | var gMbrotBundle; |
86e67c44 | 45 | var gCurrentImageData; |
cd6af089 | 46 | var gLastImageData; |
6e98af87 RK |
47 | |
48 | function Startup() { | |
fa4ecb24 RK |
49 | gMbrotBundle = document.getElementById("mbrotBundle"); |
50 | document.getElementById("statusLabel").value = gMbrotBundle.getString("statusEmpty"); | |
3fd66836 RK |
51 | |
52 | let img = document.getElementById("mbrotImage"); | |
53 | img.addEventListener("mouseup", imgEvHandler, false); | |
54 | img.addEventListener("mousedown", imgEvHandler, false); | |
55 | img.addEventListener("mousemove", imgEvHandler, false); | |
56 | img.addEventListener("touchstart", imgEvHandler, false); | |
57 | img.addEventListener("touchend", imgEvHandler, false); | |
58 | img.addEventListener("touchcancel", imgEvHandler, false); | |
59 | img.addEventListener("touchleave", imgEvHandler, false); | |
60 | img.addEventListener("touchmove", imgEvHandler, false); | |
140e460f RK |
61 | |
62 | Services.obs.notifyObservers(window, "mandelbrot-loaded", null); | |
6e98af87 | 63 | } |
37b05b56 | 64 | |
a79ddf52 RK |
65 | function getAdjustPref(prefname) { |
66 | let value; | |
67 | switch (prefname) { | |
68 | case "image.width": | |
69 | case "image.height": | |
70 | value = 0; | |
71 | try { | |
140e460f | 72 | value = Services.prefs.getIntPref("mandelbrot." + prefname); |
a79ddf52 RK |
73 | } |
74 | catch (e) { } | |
75 | if ((value < 10) || (value > 5000)) { | |
76 | value = 300; | |
140e460f | 77 | Services.prefs.setIntPref("mandelbrot." + prefname, value); |
a79ddf52 RK |
78 | } |
79 | return value; | |
80 | case "last_image.Cr_*": | |
81 | let Cr_min = -2.0; | |
82 | let Cr_max = 1.0; | |
83 | try { | |
140e460f RK |
84 | Cr_min = parseFloat(Services.prefs.getCharPref("mandelbrot.last_image.Cr_min")); |
85 | Cr_max = parseFloat(Services.prefs.getCharPref("mandelbrot.last_image.Cr_max")); | |
a79ddf52 RK |
86 | } |
87 | catch (e) { } | |
88 | if ((Cr_min < -3) || (Cr_min > 2) || | |
89 | (Cr_max < -3) || (Cr_max > 2) || (Cr_min >= Cr_max)) { | |
90 | Cr_min = -2.0; Cr_max = 1.0; | |
91 | } | |
140e460f RK |
92 | Services.prefs.setCharPref("mandelbrot.last_image.Cr_min", Cr_min); |
93 | Services.prefs.setCharPref("mandelbrot.last_image.Cr_max", Cr_max); | |
a79ddf52 RK |
94 | return {Cr_min: Cr_min, Cr_max: Cr_max}; |
95 | case "last_image.Ci_*": | |
96 | let Ci_min = -1.5; | |
97 | let Ci_max = 1.5; | |
98 | try { | |
140e460f RK |
99 | Ci_min = parseFloat(Services.prefs.getCharPref("mandelbrot.last_image.Ci_min")); |
100 | Ci_max = parseFloat(Services.prefs.getCharPref("mandelbrot.last_image.Ci_max")); | |
a79ddf52 RK |
101 | } |
102 | catch (e) { } | |
103 | if ((Ci_min < -2.5) || (Ci_min > 2.5) || | |
104 | (Ci_max < -2.5) || (Ci_max > 2.5) || (Ci_min >= Ci_max)) { | |
105 | Ci_min = -1.5; Ci_max = 1.5; | |
106 | } | |
140e460f RK |
107 | Services.prefs.setCharPref("mandelbrot.last_image.Ci_min", Ci_min); |
108 | Services.prefs.setCharPref("mandelbrot.last_image.Ci_max", Ci_max); | |
a79ddf52 RK |
109 | return {Ci_min: Ci_min, Ci_max: Ci_max}; |
110 | case "iteration_max": | |
111 | value = 500; | |
112 | try { | |
140e460f | 113 | value = Services.prefs.getIntPref("mandelbrot." + prefname); |
a79ddf52 RK |
114 | } |
115 | catch (e) { | |
116 | setIter(value); | |
117 | } | |
118 | if (value < 10 || value > 10000) { | |
119 | value = 500; | |
120 | setIter(value); | |
121 | } | |
122 | return value; | |
123 | case "use_algorithm": | |
124 | value = "numeric"; | |
125 | try { | |
140e460f | 126 | value = Services.prefs.getCharPref("mandelbrot." + prefname); |
a79ddf52 RK |
127 | } |
128 | catch (e) { | |
129 | setAlgorithm(value); | |
130 | } | |
131 | return value; | |
132 | case "color_palette": | |
133 | value = "kairo"; | |
134 | try { | |
140e460f | 135 | value = Services.prefs.getCharPref("mandelbrot." + prefname); |
a79ddf52 RK |
136 | } |
137 | catch(e) { | |
138 | setPalette(value); | |
139 | } | |
140 | return value; | |
141 | case "syncProportions": | |
142 | value = true; | |
143 | try { | |
140e460f | 144 | value = Services.prefs.getBoolPref("mandelbrot." + prefname); |
a79ddf52 RK |
145 | } |
146 | catch(e) { | |
140e460f | 147 | Services.prefs.setBoolPref("mandelbrot." + prefname, value); |
a79ddf52 RK |
148 | } |
149 | return value; | |
150 | default: | |
151 | return false; | |
86e67c44 | 152 | } |
a79ddf52 RK |
153 | } |
154 | ||
155 | function adjustCoordsAndDraw(aC_min, aC_max) { | |
156 | let iWidth = getAdjustPref("image.width"); | |
157 | let iHeight = getAdjustPref("image.height"); | |
86e67c44 RK |
158 | |
159 | // correct coordinates | |
160 | if (aC_min.r < -2) | |
161 | aC_min.r = -2; | |
162 | if (aC_max.r > 2) | |
163 | aC_max.r = 2; | |
164 | if ((aC_min.r > 2) || (aC_max.r < -2) || (aC_min.r >= aC_max.r)) { | |
165 | aC_min.r = -2.0; aC_max.r = 1.0; | |
166 | } | |
167 | if (aC_min.i < -2) | |
168 | aC_min.i = -2; | |
169 | if (aC_max.i > 2) | |
170 | aC_max.i = 2; | |
171 | if ((aC_min.i > 2) || (aC_max.i < -2) || (aC_min.i >= aC_max.i)) { | |
30586599 | 172 | aC_min.i = -1.3; aC_max.i = 1.3; |
86e67c44 RK |
173 | } |
174 | ||
175 | let CWidth = aC_max.r - aC_min.r; | |
176 | let CHeight = aC_max.i - aC_min.i; | |
177 | let C_mid = new complex(aC_min.r + CWidth / 2, aC_min.i + CHeight / 2); | |
178 | ||
179 | let CRatio = Math.max(CWidth / iWidth, CHeight / iHeight); | |
180 | ||
140e460f RK |
181 | Services.prefs.setCharPref("mandelbrot.last_image.Cr_min", C_mid.r - iWidth * CRatio / 2); |
182 | Services.prefs.setCharPref("mandelbrot.last_image.Cr_max", C_mid.r + iWidth * CRatio / 2); | |
183 | Services.prefs.setCharPref("mandelbrot.last_image.Ci_min", C_mid.i - iHeight * CRatio / 2); | |
184 | Services.prefs.setCharPref("mandelbrot.last_image.Ci_max", C_mid.i + iHeight * CRatio / 2); | |
86e67c44 RK |
185 | |
186 | drawImage(); | |
187 | } | |
188 | ||
37b05b56 | 189 | function drawImage() { |
8a9c8e3f | 190 | let canvas = document.getElementById("mbrotImage"); |
2cb9a6b5 | 191 | let context = canvas.getContext("2d"); |
37b05b56 | 192 | |
5366c7d6 RK |
193 | document.getElementById("drawButton").hidden = true; |
194 | ||
fa4ecb24 | 195 | document.getElementById("statusLabel").value = gMbrotBundle.getString("statusDrawing"); |
2cb9a6b5 | 196 | |
cd6af089 RK |
197 | if (gCurrentImageData) { |
198 | gLastImageData = gCurrentImageData; | |
199 | } | |
200 | ||
a79ddf52 RK |
201 | let Cr_vals = getAdjustPref("last_image.Cr_*"); |
202 | let Cr_min = Cr_vals.Cr_min; | |
203 | let Cr_max = Cr_vals.Cr_max; | |
eceff1c9 | 204 | |
a79ddf52 RK |
205 | let Ci_vals = getAdjustPref("last_image.Ci_*"); |
206 | let Ci_min = Ci_vals.Ci_min; | |
207 | let Ci_max = Ci_vals.Ci_max; | |
eceff1c9 | 208 | |
a79ddf52 RK |
209 | let iterMax = getAdjustPref("iteration_max"); |
210 | let algorithm = getAdjustPref("use_algorithm"); | |
6e98af87 | 211 | |
cd6af089 RK |
212 | let currentPalette = getAdjustPref("color_palette"); |
213 | if (!gColorPalette || !gColorPalette.length) | |
214 | gColorPalette = getColorPalette(currentPalette); | |
215 | ||
a79ddf52 RK |
216 | let iWidth = getAdjustPref("image.width"); |
217 | let iHeight = getAdjustPref("image.height"); | |
eceff1c9 | 218 | |
86e67c44 RK |
219 | gCurrentImageData = { |
220 | C_min: new complex(Cr_min, Ci_min), | |
221 | C_max: new complex(Cr_max, Ci_max), | |
222 | iWidth: iWidth, | |
223 | iHeight: iHeight, | |
224 | iterMax: iterMax | |
225 | }; | |
226 | ||
eceff1c9 RK |
227 | canvas.width = iWidth; |
228 | canvas.height = iHeight; | |
229 | ||
230 | context.fillStyle = "rgba(255, 255, 255, 127)"; | |
2cb9a6b5 | 231 | context.fillRect(0, 0, canvas.width, canvas.height); |
37b05b56 | 232 | |
2cb9a6b5 RK |
233 | gStartTime = new Date(); |
234 | ||
eceff1c9 RK |
235 | drawLine(0, [Cr_min, Cr_max, Ci_min, Ci_max], |
236 | canvas, context, iterMax, algorithm); | |
2cb9a6b5 RK |
237 | } |
238 | ||
eceff1c9 | 239 | function drawLine(line, dimensions, canvas, context, iterMax, algorithm) { |
aad35028 RK |
240 | let Cr_min = dimensions[0]; |
241 | let Cr_max = dimensions[1]; | |
242 | let Cr_scale = Cr_max - Cr_min; | |
243 | ||
244 | let Ci_min = dimensions[2]; | |
245 | let Ci_max = dimensions[3]; | |
246 | let Ci_scale = Ci_max - Ci_min; | |
247 | ||
8a2b6e17 RK |
248 | let lines = Math.min(canvas.height - line, 8); |
249 | let imageData = context.createImageData(canvas.width, lines); | |
250 | let pixels = imageData.data; | |
251 | let idx = 0; | |
aad35028 RK |
252 | for (var img_y = line; img_y < canvas.height && img_y < line+8; img_y++) |
253 | for (let img_x = 0; img_x < canvas.width; img_x++) { | |
254 | let C = new complex(Cr_min + (img_x / canvas.width) * Cr_scale, | |
255 | Ci_min + (img_y / canvas.height) * Ci_scale); | |
8a2b6e17 RK |
256 | let colors = drawPoint(context, img_x, img_y, C, iterMax, algorithm); |
257 | pixels[idx++] = colors[0]; | |
258 | pixels[idx++] = colors[1]; | |
259 | pixels[idx++] = colors[2]; | |
260 | pixels[idx++] = colors[3]; | |
aad35028 | 261 | } |
8a2b6e17 | 262 | context.putImageData(imageData, 0, line); |
2cb9a6b5 | 263 | |
aad35028 RK |
264 | if (img_y < canvas.height) |
265 | setTimeout(drawLine, 0, img_y, dimensions, canvas, context, iterMax, algorithm); | |
266 | else if (gStartTime) | |
267 | EndCalc(); | |
37b05b56 RK |
268 | } |
269 | ||
6e98af87 RK |
270 | function EndCalc() { |
271 | let endTime = new Date(); | |
272 | let timeUsed = (endTime.getTime() - gStartTime.getTime()) / 1000; | |
273 | document.getElementById("statusLabel").value = | |
fa4ecb24 | 274 | gMbrotBundle.getFormattedString("statusTime", [timeUsed.toFixed(3)]); |
287a980b | 275 | gStartTime = 0; |
6e98af87 RK |
276 | } |
277 | ||
37b05b56 RK |
278 | function complex(aReal, aImag) { |
279 | this.r = aReal; | |
280 | this.i = aImag; | |
2cb9a6b5 RK |
281 | } |
282 | complex.prototype = { | |
283 | square: function() { | |
37b05b56 RK |
284 | return new complex(this.r * this.r - this.i * this.i, |
285 | 2 * this.r * this.i); | |
2cb9a6b5 RK |
286 | }, |
287 | dist: function() { | |
37b05b56 | 288 | return Math.sqrt(this.r * this.r + this.i * this.i); |
2cb9a6b5 RK |
289 | }, |
290 | add: function(aComplex) { | |
37b05b56 RK |
291 | return new complex(this.r + aComplex.r, this.i + aComplex.i); |
292 | } | |
293 | } | |
294 | ||
6e98af87 RK |
295 | function mandelbrotValueOO (aC, aIterMax) { |
296 | // this would be nice code in general but it looks like JS objects are too heavy for normal use. | |
8444612a | 297 | let Z = new complex(0.0, 0.0); |
37b05b56 RK |
298 | for (var iter = 0; iter < aIterMax; iter++) { |
299 | Z = Z.square().add(aC); | |
300 | if (Z.r * Z.r + Z.i * Z.i > 256) { break; } | |
301 | } | |
6e98af87 RK |
302 | return iter; |
303 | } | |
8444612a | 304 | |
6e98af87 RK |
305 | function mandelbrotValueNumeric (aC, aIterMax) { |
306 | // optimized numeric code for fast calculation | |
8444612a RK |
307 | let Cr = aC.r, Ci = aC.i; |
308 | let Zr = 0.0, Zi = 0.0; | |
309 | let Zr2 = Zr * Zr, Zi2 = Zi * Zi; | |
310 | for (var iter = 0; iter < aIterMax; iter++) { | |
311 | Zi = 2 * Zr * Zi + Ci; | |
312 | Zr = Zr2 - Zi2 + Cr; | |
313 | ||
314 | Zr2 = Zr * Zr; Zi2 = Zi * Zi; | |
315 | if (Zr2 + Zi2 > 256) { break; } | |
316 | } | |
37b05b56 RK |
317 | return iter; |
318 | } | |
319 | ||
320 | function getColor(aIterValue, aIterMax) { | |
8a9c8e3f | 321 | let standardizedValue = Math.round(aIterValue * 1024 / aIterMax); |
6e98af87 RK |
322 | if (gColorPalette && gColorPalette.length) |
323 | return gColorPalette[standardizedValue]; | |
324 | ||
325 | // fallback to simple b/w if for some reason we don't have a palette | |
326 | if (aIterValue == aIterMax) | |
2cb9a6b5 | 327 | return [0, 0, 0, 255]; |
6e98af87 | 328 | else |
2cb9a6b5 | 329 | return [255, 255, 255, 255]; |
37b05b56 RK |
330 | } |
331 | ||
332 | function getColorPalette(palName) { | |
333 | var palette = []; | |
334 | switch (palName) { | |
335 | case 'bw': | |
8a9c8e3f | 336 | for (let i = 0; i < 1024; i++) { |
2cb9a6b5 | 337 | palette[i] = [255, 255, 255, 255]; |
37b05b56 | 338 | } |
2cb9a6b5 | 339 | palette[1024] = [0, 0, 0, 255]; |
37b05b56 RK |
340 | break; |
341 | case 'kairo': | |
342 | // outer areas | |
8a9c8e3f RK |
343 | for (let i = 0; i < 32; i++) { |
344 | let cc1 = Math.floor(i * 127 / 31); | |
345 | let cc2 = 170 - Math.floor(i * 43 / 31); | |
2cb9a6b5 | 346 | palette[i] = [cc1, cc2, cc1, 255]; |
37b05b56 RK |
347 | } |
348 | // inner areas | |
8a9c8e3f RK |
349 | for (let i = 0; i < 51; i++) { |
350 | let cc = Math.floor(i * 170 / 50); | |
2cb9a6b5 | 351 | palette[32 + i] = [cc, 0, (170-cc), 255]; |
37b05b56 RK |
352 | } |
353 | // corona | |
8a9c8e3f RK |
354 | for (let i = 0; i < 101; i++) { |
355 | let cc = Math.floor(i * 200 / 100); | |
2cb9a6b5 | 356 | palette[83 + i] = [255, cc, 0, 255]; |
37b05b56 RK |
357 | } |
358 | // inner corona | |
8a9c8e3f RK |
359 | for (let i = 0; i < 201; i++) { |
360 | let cc1 = 255 - Math.floor(i * 85 / 200); | |
361 | let cc2 = 200 - Math.floor(i * 30 / 200); | |
362 | let cc3 = Math.floor(i * 170 / 200); | |
2cb9a6b5 | 363 | palette[184 + i] = [cc1, cc2, cc3, 255]; |
37b05b56 | 364 | } |
8a9c8e3f RK |
365 | for (let i = 0; i < 301; i++) { |
366 | let cc1 = 170 - Math.floor(i * 43 / 300); | |
367 | let cc2 = 170 + Math.floor(i * 85 / 300); | |
2cb9a6b5 | 368 | palette[385 + i] = [cc1, cc1, cc2, 255]; |
37b05b56 | 369 | } |
8a9c8e3f RK |
370 | for (let i = 0; i < 338; i++) { |
371 | let cc = 127 + Math.floor(i * 128 / 337); | |
2cb9a6b5 | 372 | palette[686 + i] = [cc, cc, 255, 255]; |
37b05b56 | 373 | } |
2cb9a6b5 | 374 | palette[1024] = [0, 0, 0, 255]; |
37b05b56 RK |
375 | break; |
376 | case 'rainbow-linear1': | |
8a9c8e3f | 377 | for (let i = 0; i < 256; i++) { |
2cb9a6b5 RK |
378 | palette[i] = [i, 0, 0, 255]; |
379 | palette[256 + i] = [255, i, 0, 255]; | |
380 | palette[512 + i] = [255 - i, 255, i, 255]; | |
381 | palette[768 + i] = [i, 255-i, 255, 255]; | |
37b05b56 | 382 | } |
2cb9a6b5 | 383 | palette[1024] = [0, 0, 0, 255]; |
37b05b56 | 384 | break; |
72eff464 RK |
385 | case 'rainbow-squared1': |
386 | for (let i = 0; i < 34; i++) { | |
387 | let cc = Math.floor(i * 255 / 33); | |
388 | palette[i] = [cc, 0, 0, 255]; | |
389 | } | |
390 | for (let i = 0; i < 137; i++) { | |
391 | let cc = Math.floor(i * 255 / 136); | |
392 | palette[34 + i] = [255, cc, 0, 255]; | |
393 | } | |
394 | for (let i = 0; i < 307; i++) { | |
395 | let cc = Math.floor(i * 255 / 306); | |
396 | palette[171 + i] = [255 - cc, 255, cc, 255]; | |
397 | } | |
398 | for (let i = 0; i < 546; i++) { | |
399 | let cc = Math.floor(i * 255 / 545); | |
400 | palette[478 + i] = [cc, 255 - cc, 255, 255]; | |
401 | } | |
402 | palette[1024] = [0, 0, 0, 255]; | |
403 | break; | |
404 | case 'rainbow-linear2': | |
405 | for (let i = 0; i < 205; i++) { | |
406 | let cc = Math.floor(i * 255 / 204); | |
407 | palette[i] = [255, cc, 0, 255]; | |
408 | palette[204 + i] = [255 - cc, 255, 0, 255]; | |
409 | palette[409 + i] = [0, 255, cc, 255]; | |
410 | palette[614 + i] = [0, 255 - cc, 255, 255]; | |
411 | palette[819 + i] = [cc, 0, 255, 255]; | |
412 | } | |
413 | palette[1024] = [0, 0, 0, 255]; | |
414 | break; | |
415 | case 'rainbow-squared2': | |
416 | for (let i = 0; i < 19; i++) { | |
417 | let cc = Math.floor(i * 255 / 18); | |
418 | palette[i] = [255, cc, 0, 255]; | |
419 | } | |
420 | for (let i = 0; i < 74; i++) { | |
421 | let cc = Math.floor(i * 255 / 73); | |
422 | palette[19 + i] = [255 - cc, 255, 0, 255]; | |
423 | } | |
424 | for (let i = 0; i < 168; i++) { | |
425 | let cc = Math.floor(i * 255 / 167); | |
426 | palette[93 + i] = [0, 255, cc, 255]; | |
427 | } | |
428 | for (let i = 0; i < 298; i++) { | |
429 | let cc = Math.floor(i * 255 / 297); | |
430 | palette[261 + i] = [0, 255 - cc, 255, 255]; | |
431 | } | |
432 | for (let i = 0; i < 465; i++) { | |
433 | let cc = Math.floor(i * 255 / 464); | |
434 | palette[559 + i] = [cc, 0, 255, 255]; | |
435 | } | |
436 | palette[1024] = [0, 0, 0, 255]; | |
437 | break; | |
37b05b56 | 438 | } |
72eff464 RK |
439 | /* |
440 | 'Standard-Palette (QB-Colors) | |
37b05b56 RK |
441 | For i = 0 To 1024 |
442 | xx = CInt(i * 500 / 1024 + 2) | |
443 | If xx <= 15 Then clr = xx | |
444 | If xx > 15 Then clr = CInt(Sqr((xx - 15 + 1) * 15 ^ 2 / 485)) | |
445 | If xx >= 500 Then clr = 0 | |
446 | palette(i) = QBColor(clr) | |
447 | Next | |
72eff464 | 448 | */ |
37b05b56 RK |
449 | return palette; |
450 | } | |
451 | ||
6e98af87 RK |
452 | function drawPoint(context, img_x, img_y, C, iterMax, algorithm) { |
453 | var itVal; | |
454 | switch (algorithm) { | |
455 | case 'oo': | |
456 | itVal = mandelbrotValueOO(C, iterMax); | |
457 | break; | |
458 | case 'numeric': | |
459 | default: | |
460 | itVal = mandelbrotValueNumeric(C, iterMax); | |
461 | break; | |
462 | } | |
2cb9a6b5 | 463 | return getColor(itVal, iterMax); |
37b05b56 RK |
464 | } |
465 | ||
6e98af87 RK |
466 | /***** pure UI functions *****/ |
467 | ||
4d8e7dcb | 468 | var zoomstart; |
7e4a9776 | 469 | var imgBackup; |
b6d22cbb | 470 | var zoomTouchID; |
4d8e7dcb | 471 | |
3fd66836 RK |
472 | let imgEvHandler = { |
473 | handleEvent: function(aEvent) { | |
474 | let canvas = document.getElementById("mbrotImage"); | |
475 | let context = canvas.getContext("2d"); | |
b6d22cbb RK |
476 | let touchEvent = aEvent.type.indexOf('touch') != -1; |
477 | ||
478 | // Bail out if this is neither a touch nor left-click. | |
479 | if (!touchEvent && aEvent.button != 0) | |
480 | return; | |
481 | ||
482 | // Bail out if the started touch can't be found. | |
483 | if (touchEvent && zoomstart && | |
484 | !aEvent.changedTouches.identifiedTouch(zoomTouchID)) | |
485 | return; | |
486 | ||
487 | let coordObj = touchEvent ? | |
488 | aEvent.changedTouches.identifiedTouch(zoomTouchID) : | |
489 | aEvent; | |
490 | ||
3fd66836 RK |
491 | switch (aEvent.type) { |
492 | case 'mousedown': | |
493 | case 'touchstart': | |
b6d22cbb RK |
494 | if (touchEvent) { |
495 | zoomTouchID = aEvent.changedTouches.item(0).identifier; | |
496 | coordObj = aEvent.changedTouches.identifiedTouch(zoomTouchID); | |
3fd66836 | 497 | } |
b6d22cbb RK |
498 | // left button - start dragzoom |
499 | zoomstart = {x: coordObj.clientX - canvas.offsetLeft, | |
500 | y: coordObj.clientY - canvas.offsetTop}; | |
501 | imgBackup = context.getImageData(0, 0, canvas.width, canvas.height); | |
3fd66836 RK |
502 | break; |
503 | case 'mouseup': | |
504 | case 'touchend': | |
b6d22cbb | 505 | if (zoomstart) { |
3fd66836 | 506 | context.putImageData(imgBackup, 0, 0); |
b6d22cbb RK |
507 | let zoomend = {x: coordObj.clientX - canvas.offsetLeft, |
508 | y: coordObj.clientY - canvas.offsetTop}; | |
3fd66836 RK |
509 | |
510 | // make sure zoomend is bigger than zoomstart | |
511 | if ((zoomend.x == zoomstart.x) || (zoomend.y == zoomstart.y)) { | |
512 | // cannot zoom what has no area, discard it | |
513 | zoomstart = undefined; | |
514 | return; | |
515 | } | |
516 | if (zoomend.x < zoomstart.x) | |
517 | [zoomend.x, zoomstart.x] = [zoomstart.x, zoomend.x]; | |
518 | if (zoomend.y < zoomstart.y) | |
519 | [zoomend.y, zoomstart.y] = [zoomstart.y, zoomend.y]; | |
520 | ||
521 | // determine new "coordinates" | |
522 | let CWidth = gCurrentImageData.C_max.r - gCurrentImageData.C_min.r; | |
523 | let CHeight = gCurrentImageData.C_max.i - gCurrentImageData.C_min.i; | |
524 | let newC_min = new complex( | |
525 | gCurrentImageData.C_min.r + zoomstart.x / gCurrentImageData.iWidth * CWidth, | |
526 | gCurrentImageData.C_min.i + zoomstart.y / gCurrentImageData.iHeight * CHeight); | |
527 | let newC_max = new complex( | |
528 | gCurrentImageData.C_min.r + zoomend.x / gCurrentImageData.iWidth * CWidth, | |
529 | gCurrentImageData.C_min.i + zoomend.y / gCurrentImageData.iHeight * CHeight); | |
530 | ||
531 | adjustCoordsAndDraw(newC_min, newC_max); | |
532 | } | |
533 | zoomstart = undefined; | |
534 | break; | |
535 | case 'mousemove': | |
536 | case 'touchmove': | |
b6d22cbb | 537 | if (zoomstart) { |
3fd66836 RK |
538 | context.putImageData(imgBackup, 0, 0); |
539 | context.strokeStyle = "rgb(255,255,31)"; | |
540 | context.strokeRect(zoomstart.x, zoomstart.y, | |
b6d22cbb RK |
541 | coordObj.clientX - canvas.offsetLeft - zoomstart.x, |
542 | coordObj.clientY - canvas.offsetTop - zoomstart.y); | |
86e67c44 | 543 | } |
7e4a9776 | 544 | break; |
3fd66836 | 545 | } |
4d8e7dcb | 546 | } |
3fd66836 | 547 | }; |
4d8e7dcb | 548 | |
37b05b56 | 549 | function saveImage() { |
740b86d1 | 550 | const nsIFilePicker = Components.interfaces.nsIFilePicker; |
aad35028 | 551 | let fp = null; |
740b86d1 RK |
552 | try { |
553 | fp = Components.classes["@mozilla.org/filepicker;1"] | |
554 | .createInstance(nsIFilePicker); | |
555 | } catch (e) {} | |
556 | if (!fp) return; | |
aad35028 | 557 | let promptString = gMbrotBundle.getString("savePrompt"); |
740b86d1 | 558 | fp.init(window, promptString, nsIFilePicker.modeSave); |
fa4ecb24 | 559 | fp.appendFilter(gMbrotBundle.getString("pngFilterName"), "*.png"); |
740b86d1 RK |
560 | fp.defaultString = "mandelbrot.png"; |
561 | ||
aad35028 | 562 | let fpResult = fp.show(); |
740b86d1 RK |
563 | if (fpResult != nsIFilePicker.returnCancel) { |
564 | saveCanvas(document.getElementById("mbrotImage"), fp.file); | |
565 | } | |
37b05b56 RK |
566 | } |
567 | ||
287a980b RK |
568 | function updateBookmarkMenu(aParent) { |
569 | document.getElementById("bookmarkSave").disabled = | |
cd6af089 RK |
570 | (!document.getElementById("drawButton").hidden || (gStartTime > 0)); |
571 | ||
572 | document.getElementById("bookmarkBack").disabled = !gLastImageData; | |
287a980b RK |
573 | |
574 | while (aParent.hasChildNodes() && | |
86e67c44 | 575 | aParent.lastChild.id != "bookmarkSeparator") |
287a980b RK |
576 | aParent.removeChild(aParent.lastChild); |
577 | ||
aad35028 | 578 | let file = Components.classes["@mozilla.org/file/directory_service;1"] |
287a980b RK |
579 | .getService(Components.interfaces.nsIProperties) |
580 | .get("ProfD", Components.interfaces.nsIFile); | |
581 | file.append("mandelbookmarks.sqlite"); | |
582 | if (file.exists()) { | |
aad35028 | 583 | let connection = Components.classes["@mozilla.org/storage/service;1"] |
287a980b RK |
584 | .getService(Components.interfaces.mozIStorageService) |
585 | .openDatabase(file); | |
586 | try { | |
587 | if (connection.tableExists("bookmarks")) { | |
aad35028 | 588 | let statement = connection.createStatement( |
86e67c44 RK |
589 | "SELECT name,ROWID FROM bookmarks ORDER BY ROWID ASC"); |
590 | while (statement.executeStep()) { | |
591 | let newItem = aParent.appendChild(document.createElement("menuitem")); | |
592 | newItem.setAttribute("label", statement.getString(0)); | |
593 | newItem.setAttribute("bmRowID", statement.getString(1)); | |
594 | } | |
287a980b RK |
595 | statement.reset(); |
596 | statement.finalize(); | |
597 | return; | |
2eed6617 | 598 | } |
287a980b RK |
599 | } finally { |
600 | connection.close(); | |
2eed6617 | 601 | } |
287a980b RK |
602 | } |
603 | // Create the "Nothing Available" Menu item and disable it. | |
aad35028 | 604 | let na = aParent.appendChild(document.createElement("menuitem")); |
fa4ecb24 | 605 | na.setAttribute("label", gMbrotBundle.getString("noBookmarks")); |
287a980b | 606 | na.setAttribute("disabled", "true"); |
2eed6617 RK |
607 | } |
608 | ||
b6d22cbb | 609 | function goBack() { |
cd6af089 RK |
610 | if (gLastImageData) { |
611 | Services.prefs.setIntPref("mandelbrot.iteration_max", | |
612 | gLastImageData.iterMax); | |
613 | // use gLastImageData.iWidth, gLastImageData.iHeight ??? | |
614 | adjustCoordsAndDraw(gLastImageData.C_min, gLastImageData.C_max); | |
615 | gLastImageData = undefined; | |
616 | } | |
617 | } | |
618 | ||
2eed6617 | 619 | function callBookmark(evtarget) { |
86e67c44 | 620 | if (evtarget.id == "bookmarkSave" || evtarget.id == "bookmarkSeparator") |
b8f9a76f RK |
621 | return; |
622 | if (evtarget.id == "bookmarkOverview") { | |
623 | adjustCoordsAndDraw(new complex(0,0), new complex(0,0)); | |
624 | return; | |
625 | } | |
f34775a6 RK |
626 | |
627 | if (evtarget.getAttribute('bmRowID')) { | |
628 | let iterMax = 0; | |
629 | let C_min = null; | |
630 | let C_max = null; | |
631 | ||
632 | let file = Components.classes["@mozilla.org/file/directory_service;1"] | |
633 | .getService(Components.interfaces.nsIProperties) | |
634 | .get("ProfD", Components.interfaces.nsIFile); | |
635 | file.append("mandelbookmarks.sqlite"); | |
636 | let connection = Components.classes["@mozilla.org/storage/service;1"] | |
637 | .getService(Components.interfaces.mozIStorageService) | |
638 | .openDatabase(file); | |
639 | let statement = connection.createStatement( | |
640 | "SELECT iteration_max,Cr_min,Cr_max,Ci_min,Ci_max FROM bookmarks WHERE ROWID=?1"); | |
641 | statement.bindStringParameter(0, evtarget.getAttribute('bmRowID')); | |
642 | while (statement.executeStep()) { | |
643 | iterMax = statement.getInt32(0); | |
644 | C_min = new complex(statement.getDouble(1), statement.getDouble(3)); | |
645 | C_max = new complex(statement.getDouble(2), statement.getDouble(4)); | |
646 | } | |
647 | statement.finalize(); | |
648 | connection.close(); | |
649 | ||
650 | if (iterMax && C_min && C_max) { | |
140e460f | 651 | Services.prefs.setIntPref("mandelbrot.iteration_max", iterMax); |
f34775a6 RK |
652 | adjustCoordsAndDraw(C_min, C_max); |
653 | } | |
654 | } | |
2eed6617 RK |
655 | } |
656 | ||
657 | function saveBookmark() { | |
9c2ca9fa | 658 | // retrieve wanted bookmark name with a prompt |
aad35028 | 659 | let prompts = Components.classes["@mozilla.org/embedcomp/prompt-service;1"] |
9c2ca9fa | 660 | .getService(Components.interfaces.nsIPromptService); |
aad35028 RK |
661 | let input = {value: ""}; // empty default value |
662 | let ok = prompts.prompt(null, gMbrotBundle.getString("saveBookmarkTitle"), gMbrotBundle.getString("saveBookmarkLabel"), input, null, {}); | |
9c2ca9fa RK |
663 | // ok is true if OK is pressed, false if Cancel. input.value holds the value of the edit field if "OK" was pressed. |
664 | if (!ok || !input.value) | |
665 | return | |
666 | ||
aad35028 | 667 | let bmName = input.value; |
287a980b RK |
668 | |
669 | // Open or create the bookmarks database. | |
aad35028 | 670 | let file = Components.classes["@mozilla.org/file/directory_service;1"] |
287a980b RK |
671 | .getService(Components.interfaces.nsIProperties) |
672 | .get("ProfD", Components.interfaces.nsIFile); | |
673 | file.append("mandelbookmarks.sqlite"); | |
aad35028 | 674 | let connection = Components.classes["@mozilla.org/storage/service;1"] |
287a980b RK |
675 | .getService(Components.interfaces.mozIStorageService) |
676 | .openDatabase(file); | |
677 | connection.beginTransaction(); | |
678 | if (!connection.tableExists("bookmarks")) | |
679 | connection.createTable("bookmarks", "name TEXT, iteration_max INTEGER, Cr_min REAL, Cr_max REAL, Ci_min REAL, Ci_max REAL"); | |
680 | // NULL. The value is a NULL value. | |
681 | // INTEGER. The value is a signed integer, stored in 1, 2, 3, 4, 6, or 8 bytes depending on the magnitude of the value. | |
682 | // REAL. The value is a floating point value, stored as an 8-byte IEEE floating point number. | |
683 | // TEXT. The value is a text string, stored using the database encoding (UTF-8, UTF-16BE or UTF-16-LE). | |
684 | ||
685 | // Put value of the current image into the bookmarks table | |
aad35028 | 686 | let statement = connection.createStatement( |
287a980b RK |
687 | "INSERT INTO bookmarks (name,iteration_max,Cr_min,Cr_max,Ci_min,Ci_max) VALUES (?1,?2,?3,?4,?5,?6)"); |
688 | statement.bindStringParameter(0, bmName); | |
86e67c44 RK |
689 | statement.bindStringParameter(1, gCurrentImageData.iterMax); |
690 | statement.bindStringParameter(2, gCurrentImageData.C_min.r); | |
691 | statement.bindStringParameter(3, gCurrentImageData.C_max.r); | |
692 | statement.bindStringParameter(4, gCurrentImageData.C_min.i); | |
693 | statement.bindStringParameter(5, gCurrentImageData.C_max.i); | |
287a980b RK |
694 | statement.execute(); |
695 | statement.finalize(); | |
696 | connection.commitTransaction(); | |
697 | connection.close(); | |
2eed6617 RK |
698 | } |
699 | ||
6403d662 | 700 | function imgSettings() { |
60e048b2 RK |
701 | let anchor = null; |
702 | let position = "before_start"; | |
5fb4a082 | 703 | if (document.getElementById("mandelbrot-page").nodeName == "page") { |
60e048b2 RK |
704 | anchor = document.getElementById("mandelbrotToolbar"); |
705 | } | |
706 | else { | |
707 | anchor = document.getElementById("mandelbrotMenubar"); | |
708 | position = "after_start"; | |
709 | } | |
710 | document.getElementById("imgSettingsPanel").showPopup(anchor, position); | |
6403d662 RK |
711 | } |
712 | ||
8a2b6e17 RK |
713 | function initImgSettings() { |
714 | // Get values from prefs. | |
a79ddf52 RK |
715 | for each (let coord in ["Cr", "Ci"]) { |
716 | let coord_vals = getAdjustPref("last_image." + coord + "_*"); | |
717 | document.getElementById("is_" + coord + "_min").value = coord_vals[coord + "_min"]; | |
718 | document.getElementById("is_" + coord + "_max").value = coord_vals[coord + "_max"]; | |
8a2b6e17 RK |
719 | } |
720 | for each (let dim in ["width", "height"]) { | |
a79ddf52 | 721 | document.getElementById("is_img_" + dim).value = getAdjustPref("image." + dim); |
8a2b6e17 | 722 | } |
a79ddf52 | 723 | document.getElementById("is_syncProp").checked = getAdjustPref("syncProportions"); |
8a2b6e17 RK |
724 | |
725 | // Calculate scales. | |
726 | recalcCoord("Cr", "scale"); | |
727 | recalcCoord("Ci", "scale"); | |
728 | ||
729 | // Clear the preview. | |
730 | let canvas = document.getElementById("is_mbrotPreview"); | |
731 | let context = canvas.getContext("2d"); | |
732 | context.fillStyle = "rgba(255, 255, 255, 127)"; | |
733 | context.fillRect(0, 0, canvas.width, canvas.height); | |
5fb4a082 RK |
734 | |
735 | // Set lists to correct values. | |
736 | updateIterList(); | |
737 | updatePaletteList(); | |
738 | updateAlgoList(); | |
8a2b6e17 RK |
739 | } |
740 | ||
741 | function closeImgSettings() { | |
742 | // Hide popup, which will automatically make a call to save values. | |
743 | document.getElementById("imgSettingsPanel").hidePopup(); | |
744 | } | |
745 | ||
746 | function saveImgSettings() { | |
747 | // Get values to prefs. | |
748 | for each (let coord in ["Cr_min", "Cr_max", "Ci_min", "Ci_max"]) { | |
140e460f RK |
749 | Services.prefs.setCharPref("mandelbrot.last_image." + coord, |
750 | document.getElementById("is_" + coord).value); | |
8a2b6e17 RK |
751 | } |
752 | for each (let dim in ["width", "height"]) { | |
140e460f RK |
753 | Services.prefs.setIntPref("mandelbrot.image." + dim, |
754 | document.getElementById("is_img_" + dim).value); | |
8a2b6e17 | 755 | } |
140e460f RK |
756 | Services.prefs.setBoolPref("mandelbrot.syncProportions", |
757 | document.getElementById("is_syncProp").checked); | |
8a2b6e17 RK |
758 | } |
759 | ||
760 | function checkISValue(textbox, type) { | |
761 | if (type == "coord") { | |
762 | textbox.value = roundCoord(parseFloat(textbox.value)); | |
763 | } | |
764 | else if (type == "dim") { | |
765 | textbox.value = parseInt(textbox.value); | |
766 | } | |
767 | } | |
768 | ||
769 | function drawPreview() { | |
770 | let canvas = document.getElementById("is_mbrotPreview"); | |
771 | let context = canvas.getContext("2d"); | |
772 | ||
773 | if (document.getElementById("is_img_width").value / | |
774 | document.getElementById("is_img_height").value | |
775 | < 80 / 50) { | |
776 | canvas.height = 50; | |
777 | canvas.width = canvas.height * | |
778 | document.getElementById("is_img_width").value / | |
779 | document.getElementById("is_img_height").value; | |
780 | } | |
781 | else { | |
782 | canvas.width = 80; | |
783 | canvas.height = canvas.width * | |
784 | document.getElementById("is_imgHeight").value / | |
785 | document.getElementById("is_imgWidth").value; | |
786 | } | |
787 | ||
788 | let Cr_min = parseFloat(document.getElementById("is_Cr_min").value); | |
789 | let Cr_max = parseFloat(document.getElementById("is_Cr_max").value); | |
790 | if ((Cr_min < -2) || (Cr_min > 2) || | |
791 | (Cr_max < -2) || (Cr_max > 2) || (Cr_min >= Cr_max)) { | |
792 | Cr_min = -2.0; Cr_max = 1.0; | |
793 | } | |
794 | ||
795 | let Ci_min = parseFloat(document.getElementById("is_Ci_min").value); | |
796 | let Ci_max = parseFloat(document.getElementById("is_Ci_max").value); | |
797 | if ((Ci_min < -2) || (Ci_min > 2) || | |
798 | (Ci_max < -2) || (Ci_max > 2) || (Ci_min >= Ci_max)) { | |
799 | Ci_min = -2.0; Ci_max = 1.0; | |
800 | } | |
801 | ||
a79ddf52 RK |
802 | let iterMax = getAdjustPref("iteration_max"); |
803 | let algorithm = getAdjustPref("use_algorithm"); | |
8a2b6e17 RK |
804 | |
805 | context.fillStyle = "rgba(255, 255, 255, 127)"; | |
806 | context.fillRect(0, 0, canvas.width, canvas.height); | |
807 | ||
a79ddf52 | 808 | let currentPalette = getAdjustPref("color_palette"); |
8a2b6e17 RK |
809 | gColorPalette = getColorPalette(currentPalette); |
810 | ||
811 | drawLine(0, [Cr_min, Cr_max, Ci_min, Ci_max], | |
812 | canvas, context, iterMax, algorithm); | |
813 | } | |
814 | ||
815 | function recalcCoord(coord, target) { | |
816 | let othercoord = (coord == "Ci") ? "Cr" : "Ci"; | |
817 | let owndim = (coord == "Ci") ? "height" : "width"; | |
818 | let otherdim = (coord == "Ci") ? "width" : "height"; | |
3fd66836 | 819 | let myscale; |
8a2b6e17 | 820 | if (target == "scale") { |
3fd66836 | 821 | myscale = |
8a2b6e17 RK |
822 | parseFloat(document.getElementById("is_" + coord + "_max").value) - |
823 | parseFloat(document.getElementById("is_" + coord + "_min").value); | |
824 | document.getElementById("is_" + coord + "_scale").value = roundCoord(myscale); | |
825 | } | |
826 | else if (target == 'max') { | |
827 | let mymax = | |
828 | parseFloat(document.getElementById("is_" + coord + "_min").value) + | |
829 | parseFloat(document.getElementById("is_" + coord + "_scale").value); | |
830 | document.getElementById("is_" + coord + "_max").value = roundCoord(mymax); | |
3fd66836 | 831 | myscale = document.getElementById("is_" + coord + "_scale").value; |
8a2b6e17 RK |
832 | } |
833 | if (document.getElementById("is_syncProp").checked) { | |
834 | let otherscale = myscale * | |
835 | document.getElementById("is_img_" + otherdim).value / | |
836 | document.getElementById("is_img_" + owndim).value; | |
837 | document.getElementById("is_" + othercoord + "_scale").value = roundCoord(otherscale); | |
838 | let othermax = | |
839 | parseFloat(document.getElementById("is_" + othercoord + "_min").value) + | |
840 | parseFloat(document.getElementById("is_" + othercoord + "_scale").value); | |
841 | document.getElementById("is_" + othercoord + "_max").value = roundCoord(othermax); | |
842 | } | |
843 | } | |
844 | ||
845 | function checkProportions() { | |
846 | if (!document.getElementById("is_syncProp").checked) { | |
847 | recalcCoord("Cr", "scale"); | |
848 | } | |
849 | } | |
850 | ||
851 | function roundCoord(floatval) { | |
852 | // We should round to 10 decimals here or so | |
853 | return parseFloat(floatval.toFixed(10)); | |
854 | } | |
855 | ||
5fb4a082 RK |
856 | function updateIterList() { |
857 | let currentIter = getAdjustPref("iteration_max"); | |
858 | document.getElementById("iterList").value = currentIter; | |
859 | } | |
860 | ||
861 | function updatePaletteList() { | |
862 | let currentPalette = getAdjustPref("color_palette"); | |
863 | if (!gColorPalette || !gColorPalette.length) | |
864 | gColorPalette = getColorPalette(currentPalette); | |
865 | document.getElementById("colorList").value = currentPalette; | |
866 | } | |
867 | ||
868 | function updateAlgoList() { | |
869 | let currentAlgo = getAdjustPref("use_algorithm"); | |
870 | document.getElementById("algoList").value = currentAlgo; | |
871 | } | |
872 | ||
873 | function setIter(aIter) { | |
874 | Services.prefs.setIntPref("mandelbrot.iteration_max", aIter); | |
875 | } | |
876 | ||
877 | function setPalette(aPaletteID) { | |
878 | Services.prefs.setCharPref("mandelbrot.color_palette", aPaletteID); | |
879 | gColorPalette = getColorPalette(aPaletteID); | |
880 | } | |
881 | ||
882 | function setAlgorithm(algoID) { | |
883 | Services.prefs.setCharPref("mandelbrot.use_algorithm", algoID); | |
884 | } | |
885 | ||
886 | ||
6e98af87 RK |
887 | /***** helper functions from external sources *****/ |
888 | ||
740b86d1 RK |
889 | // function below is based on http://developer.mozilla.org/en/docs/Code_snippets:Canvas |
890 | // custom modifications: | |
891 | // - use "a"-prefix on function arguments | |
892 | // - take an nsILocalFile as aDestFile argument | |
893 | // - always do silent download | |
894 | function saveCanvas(aCanvas, aDestFile) { | |
37b05b56 RK |
895 | // create a data url from the canvas and then create URIs of the source and targets |
896 | var io = Components.classes["@mozilla.org/network/io-service;1"] | |
897 | .getService(Components.interfaces.nsIIOService); | |
740b86d1 | 898 | var source = io.newURI(aCanvas.toDataURL("image/png", ""), "UTF8", null); |
37b05b56 RK |
899 | |
900 | // prepare to save the canvas data | |
901 | var persist = Components.classes["@mozilla.org/embedding/browser/nsWebBrowserPersist;1"] | |
902 | .createInstance(Components.interfaces.nsIWebBrowserPersist); | |
903 | ||
904 | persist.persistFlags = Components.interfaces.nsIWebBrowserPersist.PERSIST_FLAGS_REPLACE_EXISTING_FILES; | |
905 | persist.persistFlags |= Components.interfaces.nsIWebBrowserPersist.PERSIST_FLAGS_AUTODETECT_APPLY_CONVERSION; | |
906 | ||
37b05b56 | 907 | // save the canvas data to the file |
740b86d1 | 908 | persist.saveURI(source, null, null, null, null, aDestFile); |
37b05b56 | 909 | } |