Mercurial > hg > digilib-old
annotate client/digitallibrary/jquery/jquery.digilib.js @ 613:53ee659e2d00 jquery
keeping img tag for embedded mode seems to work now
author | robcast |
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date | Sun, 16 Jan 2011 00:56:59 +0100 |
parents | fb94f1b74d59 |
children | 0bd19b6cede4 5a7f82f10a5d |
rev | line source |
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604 | 1 /* |
2 * digilib jQuery plugin | |
3 * | |
4 */ | |
5 | |
6 (function($) { | |
610 | 7 var buttons = { |
8 reference : { | |
9 onclick : "javascript:getRefWin()", | |
10 tooltip : "get a reference URL", | |
11 img : "reference.png" | |
12 }, | |
13 zoomin : { | |
14 onclick : "javascript:dl.zoomBy(1.4)", | |
15 tooltip : "zoom in", | |
16 img : "zoom-in.png" | |
17 }, | |
18 zoomout : { | |
19 onclick : "javascript:zoomBy(0.7)", | |
20 tooltip : "zoom out", | |
21 img : "zoom-out.png" | |
22 }, | |
23 zoomarea : { | |
24 onclick : "javascript:zoomArea()", | |
25 tooltip : "zoom area", | |
26 img : "zoom-area.png" | |
27 }, | |
28 zoomfull : { | |
29 onclick : "javascript:zoomFullpage()", | |
30 tooltip : "view the whole image", | |
31 img : "zoom-full.png" | |
32 }, | |
33 pagewidth : { | |
34 onclick : "javascript:zoomFullpage('width')", | |
35 tooltip : "page width", | |
36 img : "pagewidth.png" | |
37 }, | |
38 back : { | |
39 onclick : "javascript:gotoPage('-1')", | |
40 tooltip : "goto previous image", | |
41 img : "back.png" | |
42 }, | |
43 fwd : { | |
44 onclick : "javascript:gotoPage('+1')", | |
45 tooltip : "goto next image", | |
46 img : "fwd.png" | |
47 }, | |
48 page : { | |
49 onclick : "javascript:gotoPageWin()", | |
50 tooltip : "specify image", | |
51 img : "page.png" | |
52 }, | |
53 bird : { | |
54 onclick : "javascript:toggleBirdDiv()", | |
55 tooltip : "show bird's eye view", | |
56 img : "birds-eye.png" | |
57 }, | |
58 help : { | |
59 onclick : "javascript:toggleAboutDiv()", | |
60 tooltip : "about Digilib", | |
61 img : "help.png" | |
62 }, | |
63 reset : { | |
64 onclick : "javascript:resetImage()", | |
65 tooltip : "reset image", | |
66 img : "reset.png" | |
67 }, | |
68 mark : { | |
69 onclick : "javascript:setMark()", | |
70 tooltip : "set a mark", | |
71 img : "mark.png" | |
72 }, | |
73 delmark : { | |
74 onclick : "javascript:removeMark()", | |
75 tooltip : "delete the last mark", | |
76 img : "delmark.png" | |
77 }, | |
78 hmir : { | |
79 onclick : "javascript:mirror('h')", | |
80 tooltip : "mirror horizontally", | |
81 img : "mirror-horizontal.png" | |
82 }, | |
83 vmir : { | |
84 onclick : "javascript:mirror('v')", | |
85 tooltip : "mirror vertically", | |
86 img : "mirror-vertical.png" | |
87 }, | |
88 rot : { | |
89 onclick : "javascript:setParamWin('rot', 'Rotate (0..360) clockwise')", | |
90 tooltip : "rotate image", | |
91 img : "rotate.png" | |
92 }, | |
93 brgt : { | |
94 onclick : "javascript:setParamWin('brgt', 'Brightness (-255..255)')", | |
95 tooltip : "set brightness", | |
96 img : "brightness.png" | |
97 }, | |
98 cont : { | |
99 onclick : "javascript:setParamWin('cont', 'Contrast (0..8)')", | |
100 tooltip : "set contrast", | |
101 img : "contrast.png" | |
102 }, | |
103 rgb : { | |
104 onclick : "javascript:setParamWin('rgb', '...')", | |
105 tooltip : "set rgb values", | |
106 img : "rgb.png" | |
107 }, | |
108 quality : { | |
109 onclick : "javascript:setQualityWin('Quality (0..2)')", | |
110 tooltip : "set image quality", | |
111 img : "quality.png" | |
112 }, | |
113 size : { | |
114 onclick : "javascript:toggleSizeMenu()", | |
115 tooltip : "set page size", | |
116 img : "size.png" | |
117 }, | |
118 calibrationx : { | |
119 onclick : "javascript:calibrate('x')", | |
120 tooltip : "calibrate screen x-ratio", | |
121 img : "calibration-x.png" | |
122 }, | |
123 scale : { | |
124 onclick : "javascript:toggleScaleMenu()", | |
125 tooltip : "change image scale", | |
126 img : "original-size.png" | |
127 }, | |
128 options : { | |
129 onclick : "javascript:toggleOptionDiv()", | |
130 tooltip : "hide options", | |
131 img : "options.png" | |
132 }, | |
133 SEP : { | |
134 img : "sep.png" | |
135 } | |
136 }; | |
137 | |
605 | 138 var defaults = { |
610 | 139 // base URL to Scaler servlet |
140 'scalerBaseUrl' : 'http://digilib.mpiwg-berlin.mpg.de/digitallibrary/servlet/Scaler', | |
141 // list of Scaler parameters | |
609 | 142 'scalerParamNames' : ['fn','pn','dw','dh','ww','wh','wx','wy','ws','mo', |
143 'rot','cont','brgt','rgbm','rgba','ddpi','ddpix','ddpiy'], | |
610 | 144 // mode of operation. |
145 // fullscreen: takes parameters from page URL, keeps state in page URL | |
146 // embedded: takes parameters from Javascript options, keeps state inside object | |
147 'interactionMode' : 'fullscreen', | |
148 // buttons | |
149 'buttons' : buttons, | |
612 | 150 // path to button images (must end with a slash) |
151 'buttonsImagePath' : '../greyskin/', | |
610 | 152 // button groups |
153 'buttonsStandard' : ["reference","zoomin","zoomout","zoomarea","zoomfull","pagewidth","back","fwd","page","bird","SEP","help","reset","options"], | |
154 'buttonsSpecial' : ["mark","delmark","hmir","vmir","rot","brgt","cont","rgb","quality","size","calibrationx","scale","SEP","options"], | |
611 | 155 'buttonsCustom' : [] |
610 | 156 }; |
605 | 157 |
608 | 158 // parameters from the query string |
607 | 159 var queryParams = {}; |
608 | 160 |
161 // affine geometry classes | |
162 var geom = dlGeometry(); | |
604 | 163 |
164 var methods = { | |
608 | 165 // digilib initialization |
604 | 166 init : function(options) { |
608 | 167 // settings for this digilib instance are merged from defaults and options |
607 | 168 var settings = $.extend({}, defaults, options); |
169 var isFullscreen = settings.interactionMode === 'fullscreen'; | |
170 if (isFullscreen) { | |
171 queryParams = parseQueryParams(); | |
172 }; | |
604 | 173 return this.each(function() { |
605 | 174 var $elem = $(this); |
175 var data = $elem.data('digilib'); | |
607 | 176 var elemSettings; |
608 | 177 // if the plugin hasn't been initialized yet |
604 | 178 if (!data) { |
605 | 179 // merge query parameters |
607 | 180 if (isFullscreen) { |
181 elemSettings = $.extend({}, settings, queryParams); | |
182 } else { | |
183 elemSettings = $.extend({}, settings, parseImgParams($elem)); | |
184 }; | |
605 | 185 // store in data element |
186 $elem.data('digilib', { | |
187 target : $elem, | |
607 | 188 settings : elemSettings |
604 | 189 }); |
190 } | |
608 | 191 // create HTML structure |
192 setupScalerDiv($elem, elemSettings); | |
611 | 193 setupButtons($elem, elemSettings, 'buttonsStandard'); |
604 | 194 }); |
195 }, | |
608 | 196 |
197 // clean up digilib | |
604 | 198 destroy : function() { |
199 return this.each(function(){ | |
200 var $this = $(this); | |
201 var data = $this.data('digilib'); | |
202 // Namespacing FTW | |
605 | 203 $(window).unbind('.digilib'); // unbinds all digilibs(?) |
604 | 204 data.digilib.remove(); |
205 $this.removeData('digilib'); | |
206 }); | |
207 } | |
605 | 208 }; |
604 | 209 |
608 | 210 // returns parameters from page url |
607 | 211 var parseQueryParams = function() { |
212 return parseQueryString(location.search.slice(1)); | |
213 }; | |
214 | |
608 | 215 // returns parameters taken from embedded img-element |
607 | 216 var parseImgParams = function($elem) { |
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217 var src = $elem.find('img').first().attr('src'); |
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218 if (!src) { |
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219 return null; |
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220 } |
607 | 221 var pos = src.indexOf('?'); |
222 var query = (pos < 0) ? '' : src.substring(pos + 1); | |
223 var scalerUrl = src.substring(0, pos); | |
224 var hash = parseQueryString(query); | |
609 | 225 hash.scalerBaseUrl = scalerUrl; |
607 | 226 // console.log(hash); |
227 return hash; | |
228 }; | |
229 | |
608 | 230 // parses query parameter string into parameter object |
607 | 231 var parseQueryString = function(query) { |
232 var pairs = query.split("&"); | |
233 var hash = {}; | |
234 for (var i = 0; i < pairs.length; i++) { | |
235 var pair = pairs[i].split("="); | |
236 if (pair.length === 2) { | |
608 | 237 hash[pair[0]] = pair[1]; |
607 | 238 }; |
239 }; | |
240 return hash; | |
241 }; | |
604 | 242 |
608 | 243 // returns URL and query string for Scaler |
244 var getScalerString = function (settings) { | |
609 | 245 var url = settings.scalerBaseUrl + '?'; |
246 var i, parm, latter; | |
247 // go through param names and get values from settings | |
248 for (i = 0; i < settings.scalerParamNames.length; ++i) { | |
249 parm = settings.scalerParamNames[i]; | |
250 if (settings[parm]) { | |
251 // first parm gets no '&' | |
252 url += latter ? '&' : ''; | |
253 latter = 1; | |
254 // add parm=val | |
255 url += parm + '=' + settings[parm]; | |
256 } | |
257 } | |
258 return url; | |
259 }; | |
260 | |
261 // returns maximum size for scaler img in fullscreen mode | |
262 var getFullscreenImgSize = function($elem) { | |
263 var winH = $(window).height(); | |
264 var winW = $(window).width(); | |
265 // TODO: account for borders? | |
266 return geom.size(winW, winH); | |
608 | 267 }; |
268 | |
269 // creates HTML structure for digilib in elem | |
270 var setupScalerDiv = function ($elem, settings) { | |
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271 var rewrite; |
608 | 272 if (settings.interactionMode === 'fullscreen') { |
609 | 273 // fullscreen |
274 var imgSize = getFullscreenImgSize($elem); | |
275 settings.dw = imgSize.width; | |
276 settings.dh = imgSize.height; | |
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277 $img = $('<img/>'); |
609 | 278 var scalerUrl = getScalerString(settings); |
279 $img.attr('src', scalerUrl); | |
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280 $img.addClass('pic'); |
609 | 281 } else { |
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282 // embedded mode -- try to keep img tag |
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283 var $img = $elem.find('img'); |
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284 if ($img.length > 0) { |
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285 console.debug("img detach:",$img); |
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286 $img.detach(); |
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287 $img.addClass('picsi'); |
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288 } else { |
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289 $img = $('<img/>'); |
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290 var scalerUrl = getScalerString(settings); |
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291 $img.attr('src', scalerUrl); |
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292 $img.addClass('pic'); |
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293 } |
608 | 294 } |
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295 // create new html |
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296 $elem.empty(); // TODO: should we keep stuff for customization? |
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297 var $scaler = $('<div class="scaler"/>'); |
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298 $elem.append($scaler); |
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299 $scaler.append($img); |
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300 $img.load(scalerImgLoadedFn(settings)); |
608 | 301 }; |
302 | |
610 | 303 // creates HTML structure for buttons in elem |
304 var setupButtons = function ($elem, settings, buttonGroup) { | |
305 if (settings.interactionMode === 'fullscreen') { | |
306 // fullscreen -- create new | |
612 | 307 var $buttonsDiv = $('<div class="buttons"></div>'); |
308 $elem.append($buttonsDiv); | |
610 | 309 var buttonNames = settings[buttonGroup]; |
310 for (var i = 0; i < buttonNames.length; i++) { | |
311 var buttonName = buttonNames[i]; | |
612 | 312 var buttonSettings = settings.buttons[buttonName]; |
313 // construct the button html | |
314 var $button = $('<div class="button"></div>'); | |
315 var $a = $('<a/>'); | |
316 var $img = $('<img/>'); | |
317 $buttonsDiv.append($button); | |
318 $button.append($a); | |
319 $a.append($img); | |
320 // add attributes and bindings | |
321 $button.attr('title', buttonSettings.tooltip); | |
322 $button.addClass('button-' + buttonName); | |
323 // let the clicked <a> element know about the digilib context | |
324 $a.data('digilib', { 'name' : buttonName, 'settings' : settings } ); | |
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325 $a.bind('click', function() { |
612 | 326 // get the context settings |
327 var data = $(this).data('digilib'); | |
328 // find the action for the clicked element | |
329 console.log(data.settings.buttons[data.name].onclick); | |
330 }); | |
331 // binding mit closure | |
332 //(function(){ var action = buttonSettings.onclick; | |
333 // $a.bind('click', function(){ console.log( action )} ); | |
334 //})(); | |
335 $img.attr('src', settings.buttonsImagePath + buttonSettings.img); | |
611 | 336 }; |
337 } | |
612 | 338 return $buttonsDiv; |
610 | 339 }; |
340 | |
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341 // returns function for load event of scaler img |
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342 var scalerImgLoadedFn = function(settings) { |
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343 return function() { |
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344 console.debug("img loaded! settings=", settings); |
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345 }; |
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346 }; |
605 | 347 // hook plugin into jquery |
348 $.fn.digilib = function(method) { | |
349 if (methods[method]) { | |
350 return methods[method].apply(this, Array.prototype.slice.call(arguments, 1)); | |
351 } else if (typeof(method) === 'object' || !method) { | |
352 return methods.init.apply(this, arguments); | |
353 } else { | |
354 $.error( 'Method ' + method + ' does not exist on jQuery.digilib' ); | |
355 } | |
356 }; | |
604 | 357 |
358 })(jQuery); |