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.
82 function max_image_size(screen_size)
85 for (i = 0; i < fixed_sizes.length; ++i) {
86 if (screen_size[0] >= fixed_sizes[i][0] && screen_size[1] >= fixed_sizes[i][1]) {
87 return fixed_sizes[i];
93 function pick_image_size(screen_size, image_size)
96 for (i = 0; i < fixed_sizes.length; ++i) {
97 // this is a duplicate of pr0n's resizing code, hope for no floating-point
99 var thumbxres = fixed_sizes[i][0];
100 var thumbyres = fixed_sizes[i][1];
101 var width = image_size[0];
102 var height = image_size[1];
104 if (!(thumbxres >= width && thumbyres >= height)) {
105 var sfh = width / thumbxres;
106 var sfv = height / thumbyres;
114 width = Math.floor(width);
115 height = Math.floor(height);
118 if (screen_size[0] >= width && screen_size[1] >= height) {
119 // be sure _not_ to return a reference
120 return [ fixed_sizes[i][0], fixed_sizes[i][1], width, height ];
126 function replace_image_element(url, element_id, parent_node)
128 var img = document.getElementById(element_id);
131 img.parentNode.removeChild(img);
134 img = document.createElement("img");
138 if (img.src != url) {
142 parent_node.appendChild(img);
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 img = replace_image_element(url, element_id, main);
152 if (global_infobox != 'nobox') {
153 var url = "http://" + global_vhost + "/" + evt + "/" + width + "x" + height + "/box/" + filename;
154 var boximg = replace_image_element(url, element_id + "_box", main);
156 boximg.style.position = "absolute";
157 boximg.style.left = "0px";
158 boximg.style.bottom = "-1px";
164 function display_image_num(num, element_id)
166 var screen_size = find_width();
169 if (global_image_list[num][2] == -1) {
170 // no size information, use our pessimal guess
171 adjusted_size = max_image_size(screen_size);
173 adjusted_size = pick_image_size(screen_size, [ global_image_list[num][2], global_image_list[num][3] ]);
176 var img = display_image(adjusted_size[0], adjusted_size[1], global_image_list[num][0], global_image_list[num][1], element_id);
178 if (element_id == "image") {
179 // we want to shrink the box as much as possible if we know the true
183 // replace the anchor part (if any) with the image number
184 var baseurl = (window.location.toString().split("#"))[0];
185 window.location = baseurl + "#" + (num+1);
191 function prepare_preload(img, num)
193 // cancel any pending preload
194 var preload = document.getElementById("preload");
195 if (preload !== null) {
196 preload.src = "data:";
197 preload.parentNode.removeChild(preload);
200 var preload_box = document.getElementById("preload_box");
201 if (preload_box !== null) {
202 preload_box.src = "data:";
203 preload_box.parentNode.removeChild(preload_box);
206 // grmf -- IE doesn't fire onload if the image was loaded from cache, so check for
207 // completeness first; should at least be _somewhat_ better
209 display_image_num(num, "preload");
211 img.onload = function() { display_image_num(num, "preload"); };
215 function can_go_next()
217 return (global_image_num < global_image_list.length - 1);
220 function can_go_previous()
222 return (global_image_num > 0);
225 function set_opacity(id, amount)
227 var elem = document.getElementById(id);
228 if (typeof(elem.style.opacity) != 'undefined') { // W3C
229 elem.style.opacity = amount;
230 } else if (typeof(elem.style.mozOpacity) != 'undefined') { // older Mozilla
231 elem.style.mozOpacity = amount;
232 } else if (typeof(elem.style.filter) != 'undefined') { // IE
233 if (elem.style.filter.indexOf("alpha") == -1) {
234 // add an alpha filter if there isn't one already
235 if (elem.style.filter) {
236 elem.style.filter += " ";
238 elem.style.filter = "";
240 elem.style.filter += "alpha(opacity=" + (amount*100.0) + ")";
242 // ugh? this seems to break in color index mode...
243 if (typeof(elem.filters) == 'unknown') {
244 elem.style.filter = "alpha(opacity=" + (amount*100.0) + ")";
246 elem.filters.alpha.opacity = (amount * 100.0);
249 } else { // no alpha support
251 elem.style.visibility = "visible";
252 elem.style.zorder = 1;
254 elem.style.visibility = "hidden";
259 function center_image(num)
261 var screen_size = find_width();
264 if (global_image_list[num][2] == -1) {
265 // no size information, use our pessimal guess
266 var adjusted_size = max_image_size(screen_size);
267 width = adjusted_size[0];
268 height = adjusted_size[1];
270 // use the exact information
271 var adjusted_size = pick_image_size(screen_size, [ global_image_list[num][2], global_image_list[num][3] ]);
272 width = adjusted_size[2];
273 height = adjusted_size[3];
276 // center the image on-screen
277 var main = document.getElementById("main");
278 main.style.position = "absolute";
279 main.style.left = (screen_size[0] - width) / 2 + "px";
280 main.style.top = (screen_size[1] - height) / 2 + "px";
281 main.style.width = width + "px";
282 main.style.height = height + "px";
283 main.style.lineHeight = height + "px";
288 var img = display_image_num(global_image_num, "image");
290 prepare_preload(img, global_image_num + 1);
293 set_opacity("previous", can_go_previous() ? 0.7 : 0.1);
294 set_opacity("next", can_go_next() ? 0.7 : 0.1);
295 set_opacity("close", 0.7);
298 function go_previous()
300 if (!can_go_previous()) {
304 var img = display_image_num(--global_image_num, "image");
305 if (can_go_previous()) {
306 set_opacity("previous", 0.7);
307 prepare_preload(img, global_image_num - 1);
309 set_opacity("previous", 0.1);
311 set_opacity("next", can_go_next() ? 0.7 : 0.1);
316 if (!can_go_next()) {
320 var img = display_image_num(++global_image_num, "image");
322 set_opacity("next", 0.7);
323 prepare_preload(img, global_image_num + 1);
325 set_opacity("next", 0.1);
327 set_opacity("previous", can_go_previous() ? 0.7 : 0.1);
332 window.location = global_return_url;
335 function draw_text(msg)
337 // remove any text we might have left
338 var text = document.getElementById("text");
340 text.parentNode.removeChild(text);
343 text = document.createElement("p");
345 text.style.position = "absolute";
346 text.style.color = "white";
347 text.style.lineHeight = "24px";
348 text.style.font = "24px verdana, arial, sans-serif";
349 text.innerHTML = msg;
351 var main = document.getElementById("main");
352 main.appendChild(text);
354 text.style.left = (main.clientWidth - text.clientWidth) / 2 + "px";
355 text.style.top = (main.clientHeight - text.clientHeight) / 2 + "px";
358 function fade_text(opacity)
360 set_opacity("text", opacity);
366 setTimeout("fade_text(" + opacity + ")", 30);
368 var text = document.getElementById("text");
370 text.parentNode.removeChild(text);
375 function select_image(evt, filename)
381 draw_text("Selecting " + filename + "...");
383 req.open("POST", "http://" + global_vhost + "/select", false);
384 req.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
385 req.send("mode=single&event=" + evt + "&filename=" + filename);
387 setTimeout("fade_text(0.99)", 30);
390 function key_down(which)
392 if (which == 39) { // right
394 set_opacity("next", 0.99);
396 } else if (which == 37) { // left
397 if (can_go_previous()) {
398 set_opacity("previous", 0.99);
400 } else if (which == 27) { // escape
401 set_opacity("close", 0.99);
405 function key_up(which) {
406 if (which == 39) { // right
408 set_opacity("next", 0.7);
411 } else if (which == 37) { // left
412 if (can_go_previous()) {
413 set_opacity("previous", 0.7);
416 } else if (which == 27) { // escape
417 set_opacity("close", 0.7);
419 } else if (which == 32 && global_select) { // space
420 select_image(global_image_list[global_image_num][0], global_image_list[global_image_num][1]);
424 // enable the horrible horrible IE PNG hack
425 function ie_png_hack()
427 var vstr = navigator.appVersion.split("MSIE");
428 var v = parseFloat(vstr[1]);
429 if (v >= 5.5 && v < 7.0 && document.body.filters) {
430 var next = document.getElementById("next");
431 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); }\" />";
433 var previous = document.getElementById("previous");
434 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); }\" />";
436 var close = document.getElementById("close");
437 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);\" />";