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];
43 function parse_image_num(url, default_value) {
44 var url_array = (window.location.toString().split("#"));
45 if (url_array.length != 2) {
49 var num = parseInt(url_array[1]);
50 if (num > 1 && num <= global_image_list.length) { // and then num != NaN
58 * pr0n can resize to any size we'd like, but we're much more likely
59 * to have this set of fixed-resolution screens cached, so to increase
60 * performance, we round down to the closest fit and use that. This
61 * function is a pessimal estimate of what thumbnail size we can _always_
62 * fit on the screen -- it's right if and only if all images are 4:3
63 * (and landscape). If individual size information is available, use
64 * pick_image_size, below.
79 function max_image_size(screen_size)
82 for (i = 0; i < fixed_sizes.length; ++i) {
83 if (screen_size[0] >= fixed_sizes[i][0] && screen_size[1] >= fixed_sizes[i][1]) {
84 return fixed_sizes[i];
90 function pick_image_size(screen_size, image_size)
93 for (i = 0; i < fixed_sizes.length; ++i) {
94 // this is a duplicate of pr0n's resizing code, hope for no floating-point
96 var thumbxres = fixed_sizes[i][0];
97 var thumbyres = fixed_sizes[i][1];
98 var width = image_size[0];
99 var height = image_size[1];
101 if (!(thumbxres >= width && thumbyres >= height)) {
102 var sfh = width / thumbxres;
103 var sfv = height / thumbyres;
111 width = Math.floor(width);
112 height = Math.floor(height);
115 if (screen_size[0] >= width && screen_size[1] >= height) {
116 // be sure _not_ to return a reference
117 return [ fixed_sizes[i][0], fixed_sizes[i][1], width, height ];
123 function display_image(width, height, evt, filename, element_id)
125 var url = "http://" + global_vhost + "/" + evt + "/" + width + "x" + height + "/" + global_infobox + filename;
126 var img = document.getElementById(element_id);
129 img.parentNode.removeChild(img);
132 img = document.createElement("img");
136 if (img.src != url) {
140 var main = document.getElementById("iehack");
141 main.appendChild(img);
146 function display_image_num(num, element_id)
148 var screen_size = find_width();
151 if (global_image_list[num][2] == -1) {
152 // no size information, use our pessimal guess
153 adjusted_size = max_image_size(screen_size);
155 adjusted_size = pick_image_size(screen_size, [ global_image_list[num][2], global_image_list[num][3] ]);
158 var img = display_image(adjusted_size[0], adjusted_size[1], global_image_list[num][0], global_image_list[num][1], element_id);
160 if (element_id == "image") {
161 // we want to shrink the box as much as possible if we know the true
165 // replace the anchor part (if any) with the image number
166 var baseurl = (window.location.toString().split("#"))[0];
167 window.location = baseurl + "#" + (num+1);
173 function prepare_preload(img, num)
175 // cancel any pending preload
176 var preload = document.getElementById("preload");
177 if (preload !== null) {
178 preload.src = "data:";
179 preload.parentNode.removeChild(preload);
182 // grmf -- IE doesn't fire onload if the image was loaded from cache, so check for
183 // completeness first; should at least be _somewhat_ better
185 display_image_num(num, "preload");
187 img.onload = function() { display_image_num(num, "preload"); };
191 function can_go_next()
193 return (global_image_num < global_image_list.length - 1);
196 function can_go_previous()
198 return (global_image_num > 0);
201 function set_opacity(id, amount)
203 var elem = document.getElementById(id);
204 if (typeof(elem.style.opacity) != 'undefined') { // W3C
205 elem.style.opacity = amount;
206 } else if (typeof(elem.style.mozOpacity) != 'undefined') { // older Mozilla
207 elem.style.mozOpacity = amount;
208 } else if (typeof(elem.style.filter) != 'undefined') { // IE
209 if (elem.style.filter.indexOf("alpha") == -1) {
210 // add an alpha filter if there isn't one already
211 if (elem.style.filter) {
212 elem.style.filter += " ";
214 elem.style.filter = "";
216 elem.style.filter += "alpha(opacity=" + (amount*100.0) + ")";
218 // ugh? this seems to break in color index mode...
219 if (typeof(elem.filters) == 'unknown') {
220 elem.style.filter = "alpha(opacity=" + (amount*100.0) + ")";
222 elem.filters.alpha.opacity = (amount * 100.0);
225 } else { // no alpha support
227 elem.style.visibility = "visible";
228 elem.style.zorder = 1;
230 elem.style.visibility = "hidden";
235 function center_image(num)
237 var screen_size = find_width();
240 if (global_image_list[num][2] == -1) {
241 // no size information, use our pessimal guess
242 var adjusted_size = max_image_size(screen_size);
243 width = adjusted_size[0];
244 height = adjusted_size[1];
246 // use the exact information
247 var adjusted_size = pick_image_size(screen_size, [ global_image_list[num][2], global_image_list[num][3] ]);
248 width = adjusted_size[2];
249 height = adjusted_size[3];
252 // center the image on-screen
253 var main = document.getElementById("main");
254 main.style.position = "absolute";
255 main.style.left = (screen_size[0] - width) / 2 + "px";
256 main.style.top = (screen_size[1] - height) / 2 + "px";
257 main.style.width = width + "px";
258 main.style.height = height + "px";
259 main.style.lineHeight = height + "px";
264 var img = display_image_num(global_image_num, "image");
266 prepare_preload(img, global_image_num + 1);
269 set_opacity("previous", can_go_previous() ? 0.7 : 0.1);
270 set_opacity("next", can_go_next() ? 0.7 : 0.1);
271 set_opacity("close", 0.7);
274 function go_previous()
276 if (!can_go_previous()) {
280 var img = display_image_num(--global_image_num, "image");
281 if (can_go_previous()) {
282 set_opacity("previous", 0.7);
283 prepare_preload(img, global_image_num - 1);
285 set_opacity("previous", 0.1);
287 set_opacity("next", can_go_next() ? 0.7 : 0.1);
292 if (!can_go_next()) {
296 var img = display_image_num(++global_image_num, "image");
298 set_opacity("next", 0.7);
299 prepare_preload(img, global_image_num + 1);
301 set_opacity("next", 0.1);
303 set_opacity("previous", can_go_previous() ? 0.7 : 0.1);
308 window.location = global_return_url;
311 function draw_text(msg)
313 // remove any text we might have left
314 var text = document.getElementById("text");
316 text.parentNode.removeChild(text);
319 text = document.createElement("p");
321 text.style.position = "absolute";
322 text.style.color = "white";
323 text.style.lineHeight = "24px";
324 text.style.font = "24px verdana, arial, sans-serif";
325 text.innerHTML = msg;
327 var main = document.getElementById("main");
328 main.appendChild(text);
330 text.style.left = (main.clientWidth - text.clientWidth) / 2 + "px";
331 text.style.top = (main.clientHeight - text.clientHeight) / 2 + "px";
334 function fade_text(opacity)
336 set_opacity("text", opacity);
342 setTimeout("fade_text(" + opacity + ")", 30);
344 var text = document.getElementById("text");
346 text.parentNode.removeChild(text);
351 function select_image(evt, filename)
357 draw_text("Selecting " + filename + "...");
359 req.open("POST", "http://" + global_vhost + "/select", false);
360 req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
361 req.send("mode=single&event=" + evt + "&filename=" + filename);
363 setTimeout("fade_text(0.99)", 30);
366 function key_down(which)
368 if (which == 39) { // right
370 set_opacity("next", 0.99);
372 } else if (which == 37) { // left
373 if (can_go_previous()) {
374 set_opacity("previous", 0.99);
376 } else if (which == 27) { // escape
377 set_opacity("close", 0.99);
381 function key_up(which) {
382 if (which == 39) { // right
384 set_opacity("next", 0.7);
387 } else if (which == 37) { // left
388 if (can_go_previous()) {
389 set_opacity("previous", 0.7);
392 } else if (which == 27) { // escape
393 set_opacity("close", 0.7);
395 } else if (which == 32 && global_select) { // space
396 select_image(global_image_list[global_image_num][0], global_image_list[global_image_num][1]);
400 // enable the horrible horrible IE PNG hack
401 function ie_png_hack()
403 var vstr = navigator.appVersion.split("MSIE");
404 var v = parseFloat(vstr[1]);
405 if (v >= 5.5 && v < 7.0 && document.body.filters) {
406 var next = document.getElementById("next");
407 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); }\" />";
409 var previous = document.getElementById("previous");
410 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); }\" />";
412 var close = document.getElementById("close");
413 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);\" />";