Mercurial > hg > digilib-old
annotate webapp/src/main/webapp/jquery/jquery.digilib.regions.js @ 1158:2ee261676828 default tip
better out-of-the box experience:
* digilib works without config files using sensible defaults
* new sample images folder used by default
* config files moved to templates
| author | robcast |
|---|---|
| date | Tue, 19 Feb 2013 17:32:25 +0100 |
| parents | bbb09797d7fc |
| children |
| rev | line source |
|---|---|
| 792 | 1 /** optional digilib regions plugin |
| 2 | |
| 1023 | 3 Mark up a digilib image with rectangular regions. |
| 4 | |
| 1102 | 5 If the parameter "processHtmlRegions" is set, the plugin reads region data from HTML. |
| 6 Region data should be declared inside in the digilib element, like so: | |
| 792 | 7 |
| 1025 | 8 <map class="dl-keep dl-regioncontent"> |
| 9 <area href="http://www.mpiwg-berlin.mpg.de" coords="0.1,0.1,0.4,0.1" alt="MPI fuer Wissenschaftsgeschichte"/> | |
| 10 <area href="http://www.biblhertz.it" coords="0.5,0.8,0.4,0.1" alt="Bibliotheca Hertziana"/> | |
| 11 <area coords="0.3,0.5,0.15,0.1" /> | |
| 12 </map> | |
| 1023 | 13 |
| 1067 | 14 According to the HTML specs, "area" and "a" elements are allowed inside of a "map". |
| 15 Both can have a "coords" attribute, but "area" elements can't contain child nodes. | |
| 1102 | 16 To have regions with content use "a" tags, like so:. |
| 1067 | 17 |
| 18 <map class="dl-keep dl-regioncontent"> | |
| 19 <a href="http://www.mpiwg-berlin.mpg.de" coords="0.4907,0.3521,0.1458,0.107"> | |
| 20 MPI fuer Wissenschaftsgeschichte | |
| 21 </a> | |
| 22 <a href="http://www.biblhertz.it" coords="0.3413,0.2912,0.4345,0.2945"> | |
| 23 Bibliotheca Hertziana | |
| 24 </a> | |
| 25 <area coords="0.3,0.5,0.15,0.1" /> | |
| 26 </map> | |
| 27 | |
| 1102 | 28 Regions can also be defined in Javascript: |
| 29 Set the parameter "regions" to an array with items. | |
| 30 Each item should be an object containing the following fields: | |
| 31 | |
| 32 rect | |
| 33 a retangle with relative coordinates (0..1); | |
| 34 index (optional) | |
| 35 a number to display in the region | |
| 36 attributes (optional) | |
| 37 HTML attributes for the region (id, class, title) | |
| 38 inner (optional) | |
| 39 inner HTML (has to be a jQuery object) | |
| 40 | |
| 792 | 41 */ |
| 42 | |
| 1109 | 43 (function ($) { |
| 813 | 44 // the digilib object |
| 996 | 45 var digilib = null; |
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46 // the normal zoom area |
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47 var FULL_AREA = null; |
| 813 | 48 // the functions made available by digilib |
| 1048 | 49 var fn = { |
| 50 // dummy function to avoid errors, gets overwritten by buttons plugin | |
| 51 highlightButtons : function () { | |
| 52 console.debug('regions: dummy function - highlightButtons'); | |
| 53 } | |
| 54 }; | |
| 813 | 55 // affine geometry plugin |
| 996 | 56 var geom = null; |
| 1102 | 57 // convenience variable, set in init() |
| 58 var CSS = ''; | |
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59 // generate ids |
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60 var IDCOUNT = 20000; |
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61 |
| 792 | 62 var buttons = { |
| 1091 | 63 defineregion : { |
| 64 onclick : "defineUserRegion", | |
| 813 | 65 tooltip : "define a region", |
| 792 | 66 icon : "addregion.png" |
| 67 }, | |
| 1091 | 68 removeregion : { |
| 69 onclick : "removeUserRegion", | |
| 70 tooltip : "delete the last user defined region", | |
| 792 | 71 icon : "delregion.png" |
| 72 }, | |
| 1091 | 73 removeallregions : { |
| 74 onclick : "removeAllUserRegions", | |
| 75 tooltip : "delete all user defined regions", | |
| 1137 | 76 icon : "delregions.png" |
| 1067 | 77 }, |
| 792 | 78 regions : { |
| 79 onclick : "toggleRegions", | |
| 80 tooltip : "show or hide regions", | |
| 1137 | 81 icon : "showregions.png" |
| 792 | 82 }, |
| 1092 | 83 findcoords : { |
| 84 onclick : "findCoords", | |
| 1098 | 85 tooltip : "find a region by entering its relative coordinates", |
| 1137 | 86 icon : "findcoords.png" |
| 1098 | 87 }, |
| 88 finddata : { | |
| 89 onclick : "findData", | |
| 90 tooltip : "find a region by entering text", | |
| 1137 | 91 icon : "findregion.png" |
| 792 | 92 } |
| 93 }; | |
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94 |
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95 var defaults = { |
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96 // are regions shown? |
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97 'isRegionVisible' : true, |
| 813 | 98 // are region numbers shown? |
| 1023 | 99 'showRegionNumbers' : true, |
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100 // default width for region when only point is given |
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101 'regionWidth' : 0.005, |
| 1137 | 102 // zoomfactor for displaying larger area around region (for autoZoomOnClick) |
| 103 'regionAutoZoomFactor' : 3, | |
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104 // is there region content in the page? |
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105 'processHtmlRegions' : false, |
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106 // region defined by users and in the URL |
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107 'processUserRegions' : true, |
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108 // callback for click on region |
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109 'onClickRegion' : null, |
| 1091 | 110 // callback when new user region is defined |
| 111 'onNewRegion' : null, | |
| 1137 | 112 // turn any region into a clickable link to its detail view |
| 113 'autoZoomOnClick' : true, | |
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114 // zoom in when displaying the found region |
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115 'autoZoomOnFind' : false, |
| 1091 | 116 // css selector for area/a elements (must also be marked with class "dl-keep") |
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117 'areaSelector' : 'map.dl-regioncontent area, map.dl-regioncontent a', |
| 1104 | 118 // general buttonset of this plugin |
| 1137 | 119 'regionSet' : ['regions', 'finddata', 'findcoords', 'lessoptions'], |
| 1104 | 120 // buttonset for region editing by user |
| 1137 | 121 'userRegionSet' : ['defineregion', 'removeregion', 'removeallregions'], |
| 813 | 122 // url param for regions |
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123 'rg' : null, |
| 1102 | 124 // array with region data |
| 125 'regions' : null, | |
| 1109 | 126 // function for extracting the sort string (for the region search window) |
| 127 'regionSortString' : null, | |
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128 // region attributes to copy from HTML |
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129 'regionAttributes' : { |
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130 'id' :1, |
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131 'href' :1, |
| 1102 | 132 'name' :1, |
| 133 'alt' :1, | |
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134 'target':1, |
| 1102 | 135 'title' :1, |
| 136 'style' :1 | |
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137 } |
| 813 | 138 }; |
| 792 | 139 |
| 140 var actions = { | |
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141 |
| 792 | 142 // define a region interactively with two clicked points |
| 1109 | 143 defineUserRegion : function (data) { |
| 813 | 144 if (!data.settings.isRegionVisible) { |
| 145 alert("Please turn on regions visibility!"); | |
| 146 return; | |
| 147 } | |
| 1109 | 148 var onComplete = function (data, rect) { |
| 1107 | 149 if (rect == null) return; |
| 1103 | 150 var count = getRegions(data, 'regionURL').length; |
| 1107 | 151 var attr = {'class' : CSS+'regionURL '+CSS+'overlay'}; |
| 152 var item = {'rect' : rect, 'index' : count, 'attributes' : attr}; | |
| 153 var $regionDiv = addRegionDiv(data, item); | |
| 1091 | 154 fn.highlightButtons(data, 'defineregion', 0); |
| 813 | 155 redisplay(data); |
| 1095 | 156 $(data).trigger('newRegion', [$regionDiv]); |
| 1107 | 157 }; |
| 1091 | 158 fn.highlightButtons(data, 'defineregion', 1); |
| 1107 | 159 fn.defineArea(data, onComplete, CSS+'regionArea'); |
| 792 | 160 }, |
| 161 | |
| 1109 | 162 // remove all findregions or the last added user-defined region |
| 1091 | 163 removeUserRegion : function (data) { |
| 813 | 164 if (!data.settings.isRegionVisible) { |
| 165 alert("Please turn on regions visibility!"); | |
| 166 return; | |
| 167 } | |
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168 // remove highlights |
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169 var selector = 'div.'+CSS+'highlightregion'; |
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170 var $highlights = data.$elem.find(selector); |
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171 if ($highlights.length > 0) { |
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172 $highlights.removeClass(CSS+'highlightregion'); |
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173 return; |
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174 } |
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175 // remove findregion divs |
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176 selector = 'div.'+CSS+'findregion'; |
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177 var $findregions = data.$elem.find(selector); |
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178 if ($findregions.length > 0) { |
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179 $findregions.remove(); |
| 1109 | 180 redisplay(data); |
| 181 return; | |
| 182 } | |
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183 // remove most recently added user region |
| 1109 | 184 selector = 'div.'+CSS+'regionURL'; |
| 185 var $region = data.$elem.find(selector).last(); | |
| 186 if ($region.length > 0) { | |
| 1137 | 187 $region.remove(); |
| 1109 | 188 redisplay(data); |
| 189 return; | |
| 190 } | |
| 792 | 191 }, |
| 192 | |
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193 // remove all manually added regions (defined through URL "rg" parameter) |
| 1091 | 194 removeAllUserRegions : function (data) { |
| 1067 | 195 if (!data.settings.isRegionVisible) { |
| 196 alert("Please turn on regions visibility!"); | |
| 197 return; | |
| 198 } | |
| 1109 | 199 var selector = 'div.'+CSS+'regionURL, div.'+CSS+'findregion'; |
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200 var $regionDivs = data.$elem.find(selector); |
| 1107 | 201 if ($regionDivs.length == 0) return; |
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202 $regionDivs.remove(); |
| 1067 | 203 redisplay(data); |
| 204 }, | |
| 205 | |
| 813 | 206 // show/hide regions |
| 1060 | 207 toggleRegions : function (data) { |
| 813 | 208 var show = !data.settings.isRegionVisible; |
| 209 data.settings.isRegionVisible = show; | |
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210 fn.highlightButtons(data, 'regions', show); |
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211 renderRegions(data, 1); |
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212 }, |
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213 |
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214 // display region coordinates in a selected edit line (for copying) |
| 1095 | 215 showRegionCoords : function (data, $regionDiv) { |
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216 var $elem = data.$elem; |
| 1095 | 217 var rect = $regionDiv.data('rect'); |
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218 var text = $regionDiv.data('text'); |
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219 var coordString = packCoords(rect, ','); |
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220 var html = '\ |
| 1102 | 221 <div id="'+CSS+'regionInfo" class="'+CSS+'keep '+CSS+'regionInfo">\ |
| 1098 | 222 <div>'+text+'</div>\ |
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223 <input name="coords" type="text" size="30" maxlength="40" value="'+coordString+'"/>\ |
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224 </div>'; |
| 1091 | 225 var $info = $(html); |
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226 $info.appendTo($elem); |
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227 $div = $info.find('div'); |
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228 $div.text(text); |
| 1091 | 229 $input = $info.find('input'); |
| 230 $input.on('focus.regioninfo', function (event) { | |
| 231 this.select(); | |
| 232 }); | |
| 233 $input.on('blur.regioninfo', function (event) { | |
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234 fn.withdraw($info); |
| 1091 | 235 return false; |
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236 }); |
| 1091 | 237 $input.on('keypress.regioninfo', function (event) { |
| 1092 | 238 fn.withdraw($info); // OBS: "return false" disables copy! |
| 1091 | 239 }); |
| 240 $input.prop("readonly",true); | |
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241 $info.fadeIn(); |
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242 fn.centerOnScreen(data, $info); |
| 1091 | 243 $input.focus(); |
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244 console.debug('showRegionCoords', coordString); |
| 1092 | 245 }, |
| 1091 | 246 |
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247 // draw a find region from coords and move into view |
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248 regionFromCoords : function (data, coords) { |
| 1095 | 249 var rect = parseCoords(data, coords); |
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250 if (rect == null) { |
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251 alert('invalid coordinates: ' + coords); |
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252 return; |
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253 } |
| 1107 | 254 var attr = { 'class' : CSS+'findregion' }; |
| 1102 | 255 var item = { 'rect' : rect, 'attributes' : attr }; |
| 256 var $regionDiv = addRegionDiv(data, item); | |
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257 var newZoomArea = fn.centerZoomArea(data, rect); |
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258 console.debug('regionFromCoords', coords, rect, newZoomArea); |
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259 redisplay(data); |
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260 }, |
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261 |
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262 // highlight regions by id |
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263 highlightRegions : function (data, ids) { |
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264 if (ids == null || ids.length < 1) return; |
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265 var selector = '#'+ids.join(',#'); |
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266 var $regions = data.$elem.find(selector); |
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267 $regions.addClass(CSS+'highlightregion'); |
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268 if (ids.length == 1) { |
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269 var rect = $regions.data('rect'); |
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270 fn.centerZoomArea(data, rect); |
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271 redisplay(data); |
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272 } |
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273 }, |
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274 |
| 1092 | 275 // find coordinates and display as new region |
| 276 findCoords : function (data) { | |
| 277 var $elem = data.$elem; | |
| 1102 | 278 var findSelector = '#'+CSS+'regionFindCoords'; |
| 1098 | 279 if (fn.isOnScreen(data, findSelector)) return; // already onscreen |
| 1092 | 280 var html = '\ |
| 1102 | 281 <div id="'+CSS+'regionFindCoords" class="'+CSS+'keep '+CSS+'regionInfo">\ |
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282 <div>coordinates to find:</div>\ |
| 1102 | 283 <form class="'+CSS+'form">\ |
| 1092 | 284 <div>\ |
| 1109 | 285 <input class="'+CSS+'input" name="coords" type="text" size="30"/> \ |
| 1092 | 286 </div>\ |
| 1102 | 287 <input class="'+CSS+'submit" type="submit" name="sub" value="Ok"/>\ |
| 288 <input class="'+CSS+'cancel" type="button" value="Cancel"/>\ | |
| 1092 | 289 </form>\ |
| 290 </div>'; | |
| 291 var $info = $(html); | |
| 292 $info.appendTo($elem); | |
| 293 var $form = $info.find('form'); | |
| 1102 | 294 var $input = $info.find('input.'+CSS+'input'); |
| 1092 | 295 // handle submit |
| 296 $form.on('submit', function () { | |
| 297 var coords = $input.val(); | |
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298 actions.regionFromCoords(data, coords); |
| 1092 | 299 fn.withdraw($info); |
| 300 return false; | |
| 1102 | 301 }); |
| 1107 | 302 // handle blur |
| 303 $input.on('blur', function () { | |
| 304 fn.withdraw($info); | |
| 305 }); | |
| 1092 | 306 // handle cancel |
| 1102 | 307 $form.find('.'+CSS+'cancel').on('click', function () { |
| 1092 | 308 fn.withdraw($info); |
| 1102 | 309 }); |
| 1092 | 310 $info.fadeIn(); |
| 311 fn.centerOnScreen(data, $info); | |
| 312 $input.focus(); | |
| 1098 | 313 }, |
| 314 | |
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315 // find a region by text data and higlight it |
| 1098 | 316 findData : function (data) { |
| 317 var $elem = data.$elem; | |
| 1102 | 318 var findSelector = '#'+CSS+'regionFindData'; |
| 1098 | 319 if (fn.isOnScreen(data, findSelector)) return; // already onscreen |
| 1141 | 320 var options = filteredOptions(data, 'regionHTML'); |
| 1098 | 321 var html = '\ |
| 1102 | 322 <div id="'+CSS+'regionFindData" class="'+CSS+'keep '+CSS+'regionInfo">\ |
| 1141 | 323 <div>Find object:</div>\ |
| 1102 | 324 <form class="'+CSS+'form">\ |
| 1098 | 325 <div>\ |
| 1109 | 326 <select class="'+CSS+'finddata">\ |
| 327 <option/>\ | |
| 1141 | 328 '+options+'\ |
| 1098 | 329 </select>\ |
| 330 </div>\ | |
| 1109 | 331 <input class="'+CSS+'input" name="data" type="text" size="30" /> \ |
| 1102 | 332 <input class="'+CSS+'submit" type="submit" name="sub" value="Ok"/>\ |
| 333 <input class="'+CSS+'cancel" type="button" value="Cancel"/>\ | |
| 1098 | 334 </form>\ |
| 335 </div>'; | |
| 336 var $info = $(html); | |
| 337 $info.appendTo($elem); | |
| 338 var $form = $info.find('form'); | |
| 1102 | 339 var $input = $info.find('input.'+CSS+'input'); |
| 1098 | 340 var $select = $info.find('select'); |
| 1109 | 341 var $options = $select.find('option'); |
| 342 // callback if a region is selected by name | |
| 1098 | 343 var findRegion = function () { |
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344 var id = [$select.val()]; |
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345 fn.withdraw($info); |
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346 actions.highlightRegions(data, id); |
| 1098 | 347 return false; |
| 348 }; | |
| 1109 | 349 // adapt dropdown, show only matching entries |
| 1141 | 350 var filterOptions = function (filter) { |
| 351 var options = filteredOptions(data, 'regionHTML', filter); | |
| 352 $select.empty(); | |
| 353 $select.append($(options)); | |
| 1109 | 354 }; |
| 1098 | 355 // handle submit |
| 356 $form.on('submit', findRegion); | |
| 357 $select.on('change', findRegion); | |
| 1109 | 358 $input.on('keyup', function (event) { |
| 359 // ugly: we need setTimeout here to get an updated val(); | |
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360 window.setTimeout(filterOptions, 100, $input.val()); |
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361 if (event.keyCode == '38' || event.keyCode == '40') { // arrows |
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362 $select.focus(); |
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363 } |
| 1109 | 364 }); |
| 1098 | 365 // handle cancel |
| 1102 | 366 $form.find('.'+CSS+'cancel').on('click', function () { |
| 1098 | 367 fn.withdraw($info); |
| 1102 | 368 }); |
| 1098 | 369 $info.fadeIn(); |
| 370 fn.centerOnScreen(data, $info); | |
| 371 $input.focus(); | |
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372 } |
| 792 | 373 }; |
| 374 | |
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375 // make a coords string |
| 1095 | 376 var packCoords = function (rect, sep) { |
| 1091 | 377 if (sep == null) sep = ','; // comma as default separator |
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378 return [ |
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379 fn.cropFloatStr(rect.x), |
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380 fn.cropFloatStr(rect.y), |
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381 fn.cropFloatStr(rect.width), |
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382 fn.cropFloatStr(rect.height) |
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383 ].join(sep); |
| 813 | 384 }; |
| 385 | |
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386 // create a rectangle from a coords string |
| 1095 | 387 var parseCoords = function (data, coords) { |
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388 var pos = coords.match(/[0-9.]+/g); // TODO: check validity? |
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389 if (pos == null) { |
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390 return null; |
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391 } |
| 1092 | 392 var rect = geom.rectangle(pos[0], pos[1], pos[2], pos[3]); |
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393 if (!fn.isNumber(rect.x) || !fn.isNumber(rect.y)) { |
| 1092 | 394 return null; |
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395 } |
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396 if (!rect.getArea()) { |
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397 var pt = rect.getPosition(); |
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398 rect.width = data.settings.regionWidth; |
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399 rect.height = rect.width; |
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400 rect.setCenter(pt); |
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401 } |
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402 return rect; |
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403 }; |
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404 |
| 1095 | 405 // create a new regionDiv and add it to data.$elem |
| 1102 | 406 var newRegionDiv = function (data, attr) { |
| 407 var cls = CSS+'region'; | |
| 1107 | 408 var $regionDiv = $('<div class="'+cls+'"/>'); |
| 1102 | 409 addRegionAttributes(data, $regionDiv, attr); |
| 1095 | 410 data.$elem.append($regionDiv); |
| 411 return $regionDiv; | |
| 412 }; | |
| 413 | |
| 414 // copy attributes to a region div | |
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415 var addRegionAttributes = function (data, $regionDiv, attributes) { |
| 1095 | 416 if (attributes == null) return; |
| 417 if (attributes['class']) { | |
| 418 $regionDiv.addClass(attributes['class']); | |
| 419 delete attributes['class']; | |
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420 } |
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421 if (attributes['href']) { |
| 1102 | 422 $regionDiv.data('href', attributes['href']); |
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423 delete attributes['href']; |
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424 } |
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425 if (attributes['title']) { |
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426 $regionDiv.data('text', attributes['title']); |
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427 } |
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428 // create an ID if none exists |
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429 if (!attributes['id']) { |
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430 attributes['id'] = CSS+IDCOUNT.toString(16); |
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431 IDCOUNT += 1; |
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432 } |
| 1095 | 433 $regionDiv.attr(attributes); |
| 434 }; | |
| 435 | |
| 436 // set region number | |
| 437 var addRegionNumber = function (data, $regionDiv, index) { | |
| 1103 | 438 if (!data.settings.showRegionNumbers) return; |
| 439 if (!fn.isNumber(index)) return; | |
| 1102 | 440 var $number = $('<a class="'+CSS+'regionnumber">'+index+'</a>'); |
| 1095 | 441 $regionDiv.append($number); |
| 442 return $regionDiv; | |
| 443 }; | |
| 444 | |
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445 // construct a region from a rectangle |
| 1102 | 446 var addRegionDiv = function (data, item) { |
| 447 var $regionDiv = newRegionDiv(data, item.attributes); | |
| 1095 | 448 var settings = data.settings; |
| 1102 | 449 // add region number |
| 1103 | 450 addRegionNumber(data, $regionDiv, item.index); |
| 1102 | 451 // add inner HTML |
| 452 if (item.inner) { | |
| 453 $regionDiv.append(item.inner); | |
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454 } |
| 1102 | 455 // store the coordinates in data |
| 456 $regionDiv.data('rect', item.rect); | |
| 457 // trigger a region event on click | |
| 1109 | 458 $regionDiv.on('click.dlRegion', function (event) { |
| 1102 | 459 $(data).trigger('regionClick', [$regionDiv]); |
| 460 }); | |
| 1095 | 461 return $regionDiv; |
| 462 }; | |
| 463 | |
| 1102 | 464 // create regions from a Javascript array of items |
| 465 var createRegionsFromJS = function (data, items) { | |
| 1109 | 466 $.each(items, function (index, item) { |
| 1102 | 467 addRegionDiv(data, item); |
| 468 }); | |
| 469 }; | |
| 470 | |
| 851 | 471 // create regions from URL parameters |
| 472 var createRegionsFromURL = function (data) { | |
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473 var userRegions = unpackRegions(data); |
| 1102 | 474 if (!userRegions) return; |
| 475 createRegionsFromJS(data, userRegions); | |
| 792 | 476 }; |
| 477 | |
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478 // create regions from HTML |
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479 var createRegionsFromHTML = function (data) { |
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480 // regions are defined in "area" tags |
| 1102 | 481 var $areas = data.$elem.find(data.settings.areaSelector); |
| 482 console.debug("createRegionsFromHTML - elems found: ", $areas.length); | |
| 1109 | 483 $areas.each(function (index, area) { |
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484 var $area = $(area); |
| 1102 | 485 // the "title" attribute contains the text for the tooltip |
| 486 var title = $area.attr('title'); | |
| 852 | 487 // the "coords" attribute contains the region coords (0..1) |
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488 var coords = $area.attr('coords'); |
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489 // create the rectangle |
| 1095 | 490 var rect = parseCoords(data, coords); |
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491 if (rect == null) { |
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492 return console.error('bad coords in HTML:', title, coords); |
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493 } |
| 1102 | 494 // mark div class as regionHTML |
| 495 var cls = $area.attr('class') || ''; | |
| 1107 | 496 cls += ' '+CSS+'regionHTML '+CSS+'overlay'; |
| 1102 | 497 var attr = {'class' : cls}; |
| 1095 | 498 // copy attributes |
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499 for (var n in data.settings.regionAttributes) { |
| 1102 | 500 attr[n] = $area.attr(n); |
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501 } |
| 1102 | 502 // copy inner HTML |
| 503 var $inner = $area.contents().clone(); | |
| 504 if (attr.href != null) { | |
| 1025 | 505 // wrap contents in a-tag |
| 1102 | 506 var $a = $('<a href="'+attr.href+'"/>'); |
| 507 $inner = $a.append($inner); | |
| 1025 | 508 } |
| 1102 | 509 var item = {'rect' : rect, 'attributes' : attr, 'inner' : $inner}; |
| 510 var $regionDiv = addRegionDiv(data, item); | |
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511 }); |
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512 // $areas.removeAttr('id'); |
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513 $areas.remove(); |
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514 }; |
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515 |
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516 // select region divs (HTML or URL) |
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517 var getRegions = function (data, selector) { |
| 1102 | 518 var $regions = data.$elem.find('div.'+CSS+selector); |
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519 return $regions; |
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520 }; |
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521 |
| 1141 | 522 // create a filter text matcher |
| 523 var getFilterRE = function (filter) { | |
| 524 if (!filter) return null; | |
| 525 // sanitize and split | |
| 526 var parts = filter.replace(/([\\\(\)\-\!.+?*])/g, '\\$1').split(/\s+/); | |
| 527 // match all parts anywhere in optiontext | |
| 528 var regexparts = $.map(parts, function(part) { | |
| 529 // one lookahead for each filter part | |
| 530 return '(?=.*'+part+')'; | |
| 531 }); | |
| 532 var RE = new RegExp(regexparts.join(''), 'i'); | |
| 533 return RE; | |
| 534 }; | |
| 535 | |
| 1109 | 536 // make HTML option from regions text data |
| 1141 | 537 var filteredOptions = function (data, selector, filter) { |
| 1109 | 538 var options = []; |
| 1141 | 539 var sort = data.settings.regionSortString; |
| 540 var RE = getFilterRE(filter); | |
| 1109 | 541 var createOption = function (index, region) { |
| 542 var $region = $(region); | |
| 543 var rect = $region.data('rect'); | |
| 1141 | 544 if (rect == null) return; |
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545 // var coords = packCoords(rect, ','); |
| 1109 | 546 var text = $region.data('text'); |
| 1141 | 547 if (RE == null || text.match(RE)) { |
| 548 var id = $region.attr('id'); | |
| 549 var sortstring = $region.data('sort') | |
| 550 || (typeof sort === 'function') | |
| 551 ? sort(text) | |
| 552 : text; | |
| 553 var option = '<option value="'+id+'">'+text+'</option>'; | |
| 554 options.push([sortstring, option]); | |
| 555 } | |
| 1098 | 556 }; |
| 557 var $regions = getRegions(data, selector); | |
| 1109 | 558 $.each($regions, createOption); |
| 559 options.sort(function (a, b) { | |
| 560 return a[0].localeCompare(b[0]); | |
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561 }); |
| 1109 | 562 var sorted = $.map(options, function (str, index) { |
| 563 return str[1]; | |
| 564 }); | |
| 565 // prepend an empty option | |
| 566 return sorted.join(''); | |
|
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567 }; |
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568 |
| 813 | 569 // show a region on top of the scaler image |
|
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570 var renderRegion = function (data, $regionDiv, anim) { |
| 813 | 571 if (!data.imgTrafo) return; |
|
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572 var zoomArea = data.zoomArea; |
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573 var rect = $regionDiv.data('rect').copy(); |
| 813 | 574 var show = data.settings.isRegionVisible; |
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575 if (show && zoomArea.overlapsRect(rect) && !rect.containsRect(zoomArea)) { |
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576 rect.clipTo(zoomArea); |
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577 var screenRect = data.imgTrafo.transform(rect); |
| 1067 | 578 // console.debug("renderRegion: pos=",geom.position(screenRect)); |
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579 if (anim) { |
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580 $regionDiv.fadeIn(); |
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581 } else{ |
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582 $regionDiv.show(); |
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583 } |
| 1024 | 584 // adjustDiv sets wrong coords when called BEFORE show() |
| 851 | 585 screenRect.adjustDiv($regionDiv); |
| 813 | 586 } else { |
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587 if (anim) { |
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588 $regionDiv.fadeOut(); |
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589 } else{ |
| 824 | 590 $regionDiv.hide(); |
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591 } |
| 813 | 592 } |
| 593 }; | |
| 594 | |
| 595 // show regions | |
|
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596 var renderRegions = function (data, anim) { |
| 1109 | 597 var render = function (index, region) { |
|
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598 renderRegion(data, $(region), anim); |
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599 }; |
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600 var $regions = getRegions(data, 'region') |
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601 $regions.each(render); |
| 813 | 602 }; |
| 603 | |
| 1091 | 604 // read region data from URL parameters |
| 813 | 605 var unpackRegions = function (data) { |
| 606 var rg = data.settings.rg; | |
| 1095 | 607 if (rg == null) return []; |
| 608 var coords = rg.split(","); | |
| 1109 | 609 var regions = $.map(coords, function (coord, index) { |
| 1095 | 610 var pos = coord.split("/", 4); |
| 813 | 611 var rect = geom.rectangle(pos[0], pos[1], pos[2], pos[3]); |
| 1107 | 612 var attr = {'class' : CSS+"regionURL "+CSS+"overlay"}; |
| 1102 | 613 var item = {'rect' : rect, 'index' : index+1, 'attributes' : attr}; |
| 614 return item; | |
| 1095 | 615 }); |
| 616 return regions; | |
| 792 | 617 }; |
| 618 | |
| 1091 | 619 // pack user regions array into a URL parameter string |
| 813 | 620 var packRegions = function (data) { |
| 1102 | 621 var $regions = getRegions(data, 'regionURL'); |
| 1103 | 622 if ($regions.length == 0 || !data.settings.processUserRegions) { |
| 815 | 623 data.settings.rg = null; |
| 624 return; | |
| 625 } | |
| 1109 | 626 var pack = function (region, index) { |
| 1099 | 627 var $region = $(region); |
| 628 var rect = $region.data('rect'); | |
| 1102 | 629 var packed = packCoords(rect, '/'); |
| 630 return packed; | |
| 1099 | 631 }; |
| 1102 | 632 var coords = $.map($regions, pack); |
| 1095 | 633 var rg = coords.join(','); |
| 813 | 634 data.settings.rg = rg; |
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635 console.debug('pack regions:', rg); |
| 792 | 636 }; |
| 637 | |
| 1137 | 638 // zoom in, displaying the region in the middle of the screen |
| 639 var zoomToRegion = function (data, $regionDiv) { | |
| 640 var settings = data.settings; | |
| 641 var rect = $regionDiv.data('rect'); | |
| 642 var za = rect.copy(); | |
| 643 var factor = settings.regionAutoZoomFactor; | |
| 644 za.width *= factor; | |
| 645 za.height *= factor; | |
| 646 // var screen = fn.getFullscreenRect(data); | |
| 647 za.setProportion(1, true); // avoid extreme zoomArea proportions | |
| 648 za.setCenter(rect.getCenter()).stayInside(FULL_AREA); | |
| 649 fn.setZoomArea(data, za); | |
| 650 fn.redisplay(data); | |
| 1095 | 651 }; |
| 652 | |
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653 // reload display after a region has been added or removed |
| 813 | 654 var redisplay = function (data) { |
| 1103 | 655 packRegions(data); |
| 813 | 656 fn.redisplay(data); |
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657 }; |
| 813 | 658 |
| 1091 | 659 // event handler, gets called when a newRegion event is triggered |
| 1095 | 660 var handleNewRegion = function (evt, $regionDiv) { |
| 1091 | 661 var data = this; |
| 662 var settings = data.settings; | |
| 1095 | 663 console.debug("regions: handleNewRegion", $regionDiv); |
| 1091 | 664 if (typeof settings.onNewRegion === 'function') { |
| 665 // execute callback | |
| 1095 | 666 return settings.onNewRegion(data, $regionDiv); |
| 1091 | 667 } |
| 668 if (typeof settings.onNewRegion === 'string') { | |
| 669 // execute action | |
| 1095 | 670 return actions[settings.onNewRegion](data, $regionDiv); |
| 1091 | 671 } |
| 672 }; | |
| 673 | |
| 674 // event handler, gets called when a regionClick event is triggered | |
| 1095 | 675 var handleRegionClick = function (evt, $regionDiv) { |
| 1091 | 676 var data = this; |
| 677 var settings = data.settings; | |
| 1095 | 678 console.debug("regions: handleRegionClick", $regionDiv); |
| 679 if ($regionDiv.data('href')) { | |
| 1091 | 680 // follow the href attribute of the region area |
| 1095 | 681 window.location = $regionDiv.data('href'); //TODO: how about target? |
| 1091 | 682 } |
| 683 if (typeof settings.onClickRegion === 'function') { | |
| 684 // execute callback | |
| 1095 | 685 return settings.onClickRegion(data, $regionDiv); |
| 1091 | 686 } |
| 687 if (typeof settings.onClickRegion === 'string') { | |
| 688 // execute action | |
| 1095 | 689 return actions[settings.onClickRegion](data, $regionDiv); |
| 1091 | 690 } |
| 691 }; | |
| 692 | |
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693 // event handler, reads region parameter and creates region divs |
|
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694 var handleSetup = function (evt) { |
| 941 | 695 var data = this; |
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696 var settings = data.settings; |
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697 console.debug("regions: handleSetup", settings.rg); |
| 1102 | 698 // regions with content are given in a Javascript array |
| 699 if (settings.regions) { | |
| 700 createRegionsFromJS(data, settings.regions); | |
| 701 } | |
| 1048 | 702 // regions with content are given in HTML divs |
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703 if (settings.processHtmlRegions) { |
|
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704 createRegionsFromHTML(data); |
|
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705 } |
| 1048 | 706 // regions are defined in the URL |
|
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707 if (settings.processUserRegions) { |
| 851 | 708 createRegionsFromURL(data); |
|
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709 } |
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710 }; |
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711 |
| 851 | 712 // event handler, sets buttons and shows regions when scaler img is reloaded |
|
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713 var handleUpdate = function (evt) { |
| 941 | 714 var data = this; |
|
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715 console.debug("regions: handleUpdate"); |
| 848 | 716 var settings = data.settings; |
| 717 fn.highlightButtons(data, 'regions' , settings.isRegionVisible); | |
|
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718 renderRegions(data); |
|
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|
719 }; |
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|
720 |
| 1048 | 721 // additional buttons |
| 722 var installButtons = function (data) { | |
| 723 var settings = data.settings; | |
| 724 var mode = settings.interactionMode; | |
| 725 var buttonSettings = settings.buttonSettings[mode]; | |
| 1104 | 726 var buttonSet = settings.regionSet; |
| 727 if (settings.processUserRegions) { | |
| 728 var first = buttonSet.slice(0,1); | |
| 729 var rest = buttonSet.slice(1); | |
| 730 buttonSet = first.concat(settings.userRegionSet, rest); | |
| 731 } | |
| 1048 | 732 // set regionSet to [] or '' for no buttons (when showing regions only) |
| 733 if (buttonSet.length && buttonSet.length > 0) { | |
| 734 buttonSettings.regionSet = buttonSet; | |
| 735 buttonSettings.buttonSets.push('regionSet'); | |
| 736 } | |
| 737 }; | |
| 738 | |
|
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|
739 // plugin installation called by digilib on plugin object. |
| 1109 | 740 var install = function (plugin) { |
| 813 | 741 digilib = plugin; |
|
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|
742 console.debug('installing regions plugin. digilib:', digilib); |
| 1048 | 743 // import digilib functions |
| 744 $.extend(fn, digilib.fn); | |
|
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|
745 // import geometry classes |
| 813 | 746 geom = fn.geometry; |
|
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|
747 // add defaults, actions, buttons |
|
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|
748 $.extend(digilib.defaults, defaults); |
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|
749 $.extend(digilib.actions, actions); |
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|
750 $.extend(digilib.buttons, buttons); |
| 1103 | 751 // add "rg" to digilibParamNames |
| 752 digilib.defaults.digilibParamNames.push('rg'); | |
|
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|
753 }; |
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754 |
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|
755 // plugin initialization |
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756 var init = function (data) { |
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|
757 console.debug('initialising regions plugin. data:', data); |
| 835 | 758 var $elem = data.$elem; |
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759 var settings = data.settings; |
| 1102 | 760 CSS = settings.cssPrefix; |
|
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|
761 FULL_AREA = geom.rectangle(0, 0, 1, 1); |
| 1048 | 762 // install event handlers |
| 848 | 763 var $data = $(data); |
| 920 | 764 $data.on('setup', handleSetup); |
| 765 $data.on('update', handleUpdate); | |
| 1091 | 766 $data.on('newRegion', handleNewRegion); |
| 767 $data.on('regionClick', handleRegionClick); | |
| 1137 | 768 // default: autoZoom to region, when clicked |
| 1095 | 769 if (settings.autoZoomOnClick && settings.onClickRegion == null) { |
| 770 settings.onClickRegion = zoomToRegion; | |
| 771 } | |
| 772 // install region buttons if user defined regions are allowed | |
| 1104 | 773 if (digilib.plugins.buttons != null) { |
| 1103 | 774 installButtons(data); |
| 813 | 775 } |
| 792 | 776 }; |
|
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|
777 |
|
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|
778 // plugin object with name and install/init methods |
|
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|
779 // shared objects filled by digilib on registration |
|
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|
780 var pluginProperties = { |
| 1048 | 781 name : 'regions', |
|
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782 install : install, |
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783 init : init, |
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|
784 buttons : {}, |
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|
785 actions : {}, |
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|
786 fn : {}, |
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|
787 plugins : {} |
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|
788 }; |
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|
789 |
| 792 | 790 if ($.fn.digilib == null) { |
|
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791 $.error("jquery.digilib.regions must be loaded after jquery.digilib!"); |
| 792 | 792 } else { |
|
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793 $.fn.digilib('plugin', pluginProperties); |
| 792 | 794 } |
| 795 })(jQuery); |