7 if (window.XMLHttpRequest) {
10 req = new XMLHttpRequest();
14 } else if (window.ActiveXObject) {
17 req = new ActiveXObject("Msxml2.XMLHTTP");
20 req = new ActiveXObject("Microsoft.XMLHTTP");
30 if (typeof(window.innerWidth) == 'number') {
32 return [window.innerWidth, window.innerHeight];
33 } else if (document.documentElement && (document.documentElement.clientWidth || document.documentElement.clientHeight)) {
34 // IE 6+ in 'standards compliant mode'
35 return [document.documentElement.clientWidth, document.documentElement.clientHeight];
36 } else if (document.body && (document.body.clientWidth || document.body.clientHeight)) {
38 return [document.body.clientWidth, document.body.clientHeight];
44 * pr0n can resize to any size we'd like, but we're much more likely
45 * to have this set of fixed-resolution screens cached, so to increase
46 * performance, we round down to the closest fit and use that. This
47 * function is a pessimal estimate of what thumbnail size we can _always_
48 * fit on the screen -- it's right if and only if all images are 4:3
49 * (and landscape). If individual size information is available, use
50 * pick_image_size, below.
69 function max_image_size(screen_size)
72 for (i = 0; i < fixed_sizes.length; ++i) {
73 if (screen_size[0] >= fixed_sizes[i][0] && screen_size[1] >= fixed_sizes[i][1]) {
74 return fixed_sizes[i];
80 function pick_image_size(screen_size, image_size)
83 for (i = 0; i < fixed_sizes.length; ++i) {
84 // this is a duplicate of pr0n's resizing code, hope for no floating-point
86 var thumbxres = fixed_sizes[i][0];
87 var thumbyres = fixed_sizes[i][1];
88 var width = image_size[0];
89 var height = image_size[1];
91 if (!(thumbxres >= width && thumbyres >= height)) {
92 var sfh = width / thumbxres;
93 var sfv = height / thumbyres;
101 width = Math.floor(width);
102 height = Math.floor(height);
105 if (screen_size[0] >= width && screen_size[1] >= height) {
106 // be sure _not_ to return a reference
107 return [ fixed_sizes[i][0], fixed_sizes[i][1], width, height ];
113 function replace_image_element(url, element_id, parent_node)
115 var img = document.getElementById(element_id);
117 if (img.src === url) {
120 img.parentNode.removeChild(img);
123 img = document.createElement("img");
127 parent_node.appendChild(img);
131 function rename_element(old_name, new_name)
133 // Remove any element that's in the way.
134 var elem = document.getElementById(new_name);
136 elem.parentNode.removeChild(elem);
139 elem = document.getElementById(old_name);
146 function display_image(width, height, evt, filename, element_id)
148 var url = "http://" + global_vhost + "/" + evt + "/" + width + "x" + height + "/nobox/" + filename;
149 var main = document.getElementById("iehack");
150 var preload = document.getElementById("preload");
152 // See if we have a preload going on that we can reuse.
153 if (element_id == "image" && preload !== null && preload.src == url) {
154 rename_element("preload_box", "image_box");
155 img = rename_element("preload", "image");
157 img = replace_image_element(url, element_id, main);
159 img.style.position = "absolute";
160 img.style.left = "0px";
161 img.style.top = "0px";
163 if (global_infobox != 'nobox/') {
164 var url = "http://" + global_vhost + "/" + evt + "/" + width + "x" + height + "/box/" + filename;
165 var boximg = replace_image_element(url, element_id + "_box", main);
167 boximg.style.position = "absolute";
168 boximg.style.left = "0px";
169 boximg.style.bottom = "-1px";
175 function display_image_num(num, element_id)
177 var screen_size = find_width();
180 if (global_image_list[num][2] == -1) {
181 // no size information, use our pessimal guess
182 adjusted_size = max_image_size(screen_size);
184 adjusted_size = pick_image_size(screen_size, [ global_image_list[num][2], global_image_list[num][3] ]);
187 var img = display_image(adjusted_size[0], adjusted_size[1], global_image_list[num][0], global_image_list[num][1], element_id);
189 if (element_id == "image") {
190 // we want to shrink the box as much as possible if we know the true
194 // replace the anchor part (if any) with the image number
195 window.location.hash = "#" + (num+1);
201 function prepare_preload(img, num)
203 // cancel any pending preload
204 var preload = document.getElementById("preload");
205 if (preload !== null) {
206 preload.parentNode.removeChild(preload);
209 var preload_box = document.getElementById("preload_box");
210 if (preload_box !== null) {
211 preload_box.parentNode.removeChild(preload_box);
214 // grmf -- IE doesn't fire onload if the image was loaded from cache, so check for
215 // completeness first; should at least be _somewhat_ better
217 display_image_num(num, "preload");
219 img.onload = function() { display_image_num(num, "preload"); };
223 function can_go_next()
225 return (global_image_num < global_image_list.length - 1);
228 function can_go_previous()
230 return (global_image_num > 0);
233 function set_opacity(id, amount)
235 var elem = document.getElementById(id);
236 if (typeof(elem.style.opacity) != 'undefined') { // W3C
237 elem.style.opacity = amount;
238 } else if (typeof(elem.style.mozOpacity) != 'undefined') { // older Mozilla
239 elem.style.mozOpacity = amount;
240 } else if (typeof(elem.style.filter) != 'undefined') { // IE
241 if (elem.style.filter.indexOf("alpha") == -1) {
242 // add an alpha filter if there isn't one already
243 if (elem.style.filter) {
244 elem.style.filter += " ";
246 elem.style.filter = "";
248 elem.style.filter += "alpha(opacity=" + (amount*100.0) + ")";
250 // ugh? this seems to break in color index mode...
251 if (typeof(elem.filters) == 'unknown') {
252 elem.style.filter = "alpha(opacity=" + (amount*100.0) + ")";
254 elem.filters.alpha.opacity = (amount * 100.0);
257 } else { // no alpha support
259 elem.style.visibility = "visible";
260 elem.style.zorder = 1;
262 elem.style.visibility = "hidden";
267 function center_image(num)
269 var screen_size = find_width();
272 if (global_image_list[num][2] == -1) {
273 // no size information, use our pessimal guess
274 var adjusted_size = max_image_size(screen_size);
275 width = adjusted_size[0];
276 height = adjusted_size[1];
278 // use the exact information
279 var adjusted_size = pick_image_size(screen_size, [ global_image_list[num][2], global_image_list[num][3] ]);
280 width = adjusted_size[2];
281 height = adjusted_size[3];
284 // center the image on-screen
285 var main = document.getElementById("main");
286 main.style.position = "absolute";
287 main.style.left = (screen_size[0] - width) / 2 + "px";
288 main.style.top = (screen_size[1] - height) / 2 + "px";
289 main.style.width = width + "px";
290 main.style.height = height + "px";
291 main.style.lineHeight = height + "px";
296 var img = display_image_num(global_image_num, "image");
298 prepare_preload(img, global_image_num + 1);
301 set_opacity("previous", can_go_previous() ? 0.7 : 0.1);
302 set_opacity("next", can_go_next() ? 0.7 : 0.1);
303 set_opacity("close", 0.7);
306 function go_previous()
308 if (!can_go_previous()) {
312 var img = display_image_num(--global_image_num, "image");
313 if (can_go_previous()) {
314 set_opacity("previous", 0.7);
315 prepare_preload(img, global_image_num - 1);
317 set_opacity("previous", 0.1);
319 set_opacity("next", can_go_next() ? 0.7 : 0.1);
324 if (!can_go_next()) {
328 var img = display_image_num(++global_image_num, "image");
330 set_opacity("next", 0.7);
331 prepare_preload(img, global_image_num + 1);
333 set_opacity("next", 0.1);
335 set_opacity("previous", can_go_previous() ? 0.7 : 0.1);
340 window.location = global_return_url;
343 function draw_text(msg)
345 // remove any text we might have left
346 var text = document.getElementById("text");
348 text.parentNode.removeChild(text);
351 text = document.createElement("p");
353 text.style.position = "absolute";
354 text.style.color = "white";
355 text.style.lineHeight = "24px";
356 text.style.font = "24px verdana, arial, sans-serif";
357 text.innerHTML = msg;
359 var main = document.getElementById("main");
360 main.appendChild(text);
362 text.style.left = (main.clientWidth - text.clientWidth) / 2 + "px";
363 text.style.top = (main.clientHeight - text.clientHeight) / 2 + "px";
366 function fade_text(opacity)
368 set_opacity("text", opacity);
374 setTimeout("fade_text(" + opacity + ")", 30);
376 var text = document.getElementById("text");
378 text.parentNode.removeChild(text);
383 function select_image(evt, filename, selected)
390 draw_text("Selecting " + filename + "...");
392 draw_text("Unselecting " + filename + "...");
395 req.open("POST", "http://" + global_vhost + "/select", false);
396 req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
397 req.send("event=" + evt + "&filename=" + filename + "&selected=" + selected);
399 setTimeout("fade_text(0.99)", 30);
402 function key_down(which)
404 if (which == 39) { // right
406 set_opacity("next", 0.99);
408 } else if (which == 37) { // left
409 if (can_go_previous()) {
410 set_opacity("previous", 0.99);
412 } else if (which == 27) { // escape
413 set_opacity("close", 0.99);
415 check_for_hash_change();
419 function key_up(which) {
420 if (which == 39) { // right
422 set_opacity("next", 0.7);
425 } else if (which == 37) { // left
426 if (can_go_previous()) {
427 set_opacity("previous", 0.7);
430 } else if (which == 27) { // escape
431 set_opacity("close", 0.7);
433 } else if (which == 32 && global_select) { // space
434 select_image(global_image_list[global_image_num][0], global_image_list[global_image_num][1], 1);
435 } else if (which == 85 && global_select) { // u
436 select_image(global_image_list[global_image_num][0], global_image_list[global_image_num][1], 0);
438 check_for_hash_change();
442 // enable the horrible horrible IE PNG hack
443 function ie_png_hack()
445 var vstr = navigator.appVersion.split("MSIE");
446 var v = parseFloat(vstr[1]);
447 if (v >= 5.5 && v < 7.0 && document.body.filters) {
448 var next = document.getElementById("next");
449 next.outerHTML = "<span id=\"next\" style=\"display: inline-block; position: absolute; bottom: 0px; right: 0px; width: 50px; height: 50px; filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + next.src + "')\" onmousedown=\"if (can_go_next()) set_opacity('next', 1.0)\" onmouseup=\"if (can_go_next()) { set_opacity('next', 0.7); go_next(); }\" onmouseout=\"if (can_go_next()) { set_opacity('next', 0.7); }\" />";
451 var previous = document.getElementById("previous");
452 previous.outerHTML = "<span id=\"previous\" style=\"display: inline-block; position: absolute; bottom: 0px; right: 0px; width: 50px; height: 50px; filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + previous.src + "')\" onmousedown=\"if (can_go_previous()) set_opacity('previous', 1.0)\" onmouseup=\"if (can_go_previous()) { set_opacity('previous', 0.7); go_previous(); }\" onmouseout=\"if (can_go_previous()) { set_opacity('previous', 0.7); }\" />";
454 var close = document.getElementById("close");
455 close.outerHTML = "<span id=\"close\" style=\"display: inline-block; position: absolute; top: 0px; right: 0px; width: 50px; height: 50px; filter:progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + close.src + "')\" onmousedown=\"set_opacity('close', 1.0)\" onmouseup=\"set_opacity('close', 0.7); do_close();\" onmouseout=\"set_opacity('close', 0.7);\" />";
459 function parse_image_num(default_value) {
460 var num = parseInt(window.location.hash.substr(1));
461 if (num >= 1 && num <= global_image_list.length) { // and then num != NaN
464 return default_value;
468 function check_for_hash_change() {
469 var num = parse_image_num(-1);
470 if (num != -1 && num != global_image_num) {
471 global_image_num = num;