Mercurial > hg > digilib-old
annotate webapp/src/main/webapp/jquery/jquery.digilib.regions.js @ 1110:ffda96c2fde0
use RegExp for finding regions; use ID for highlighting
| author | hertzhaft |
|---|---|
| date | Sun, 28 Oct 2012 15:10:41 +0100 |
| parents | ae796bcac7f4 |
| children | 0a01d5cc66fe |
| 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", | |
| 1067 | 76 icon : "delallregions.png" |
| 77 }, | |
| 792 | 78 regions : { |
| 79 onclick : "toggleRegions", | |
| 80 tooltip : "show or hide regions", | |
| 81 icon : "regions.png" | |
| 82 }, | |
| 1092 | 83 findcoords : { |
| 84 onclick : "findCoords", | |
| 1098 | 85 tooltip : "find a region by entering its relative coordinates", |
| 86 icon : "regions.png" | |
| 87 }, | |
| 88 finddata : { | |
| 89 onclick : "findData", | |
| 90 tooltip : "find a region by entering text", | |
| 1092 | 91 icon : "regions.png" |
| 92 }, | |
| 1048 | 93 regioninfo : { |
| 855 | 94 onclick : "showRegionInfo", |
| 1091 | 95 tooltip : "show information about user defined regions", |
| 792 | 96 icon : "regioninfo.png" |
| 97 } | |
| 98 }; | |
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99 |
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100 var defaults = { |
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101 // are regions shown? |
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102 'isRegionVisible' : true, |
| 813 | 103 // are region numbers shown? |
| 1023 | 104 'showRegionNumbers' : true, |
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105 // default width for region when only point is given |
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106 'regionWidth' : 0.005, |
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107 // is there region content in the page? |
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108 'processHtmlRegions' : false, |
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109 // region defined by users and in the URL |
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110 'processUserRegions' : true, |
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111 // callback for click on region |
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112 'onClickRegion' : null, |
| 1091 | 113 // callback when new user region is defined |
| 114 'onNewRegion' : null, | |
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115 // turn any region into a clickable link to its detail view (DEPRECATED) |
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116 'autoZoomOnClick' : false, |
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117 // zoom in when displaying the found region |
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118 'autoZoomOnFind' : false, |
| 1091 | 119 // css selector for area/a elements (must also be marked with class "dl-keep") |
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120 'areaSelector' : 'map.dl-regioncontent area, map.dl-regioncontent a', |
| 1104 | 121 // general buttonset of this plugin |
| 122 'regionSet' : ['regions', 'findcoords', 'finddata', 'lessoptions'], | |
| 123 // buttonset for region editing by user | |
| 124 'userRegionSet' : ['defineregion', 'removeregion', 'removeallregions', 'regioninfo'], | |
| 813 | 125 // url param for regions |
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126 'rg' : null, |
| 1102 | 127 // array with region data |
| 128 'regions' : null, | |
| 1109 | 129 // function for extracting the sort string (for the region search window) |
| 130 'regionSortString' : null, | |
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131 // region attributes to copy from HTML |
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132 'regionAttributes' : { |
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133 'id' :1, |
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134 'href' :1, |
| 1102 | 135 'name' :1, |
| 136 'alt' :1, | |
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137 'target':1, |
| 1102 | 138 'title' :1, |
| 139 'style' :1 | |
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140 } |
| 813 | 141 }; |
| 792 | 142 |
| 143 var actions = { | |
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144 |
| 792 | 145 // define a region interactively with two clicked points |
| 1109 | 146 defineUserRegion : function (data) { |
| 813 | 147 if (!data.settings.isRegionVisible) { |
| 148 alert("Please turn on regions visibility!"); | |
| 149 return; | |
| 150 } | |
| 1109 | 151 var onComplete = function (data, rect) { |
| 1107 | 152 if (rect == null) return; |
| 1103 | 153 var count = getRegions(data, 'regionURL').length; |
| 1107 | 154 var attr = {'class' : CSS+'regionURL '+CSS+'overlay'}; |
| 155 var item = {'rect' : rect, 'index' : count, 'attributes' : attr}; | |
| 156 var $regionDiv = addRegionDiv(data, item); | |
| 1091 | 157 fn.highlightButtons(data, 'defineregion', 0); |
| 813 | 158 redisplay(data); |
| 1095 | 159 $(data).trigger('newRegion', [$regionDiv]); |
| 1107 | 160 }; |
| 1091 | 161 fn.highlightButtons(data, 'defineregion', 1); |
| 1107 | 162 fn.defineArea(data, onComplete, CSS+'regionArea'); |
| 792 | 163 }, |
| 164 | |
| 1109 | 165 // remove all findregions or the last added user-defined region |
| 1091 | 166 removeUserRegion : function (data) { |
| 813 | 167 if (!data.settings.isRegionVisible) { |
| 168 alert("Please turn on regions visibility!"); | |
| 169 return; | |
| 170 } | |
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171 // remove highlights |
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172 var selector = 'div.'+CSS+'highlightregion'; |
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173 var $highlights = data.$elem.find(selector); |
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174 if ($highlights.length > 0) { |
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175 $highlights.removeClass(CSS+'highlightregion'); |
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176 return; |
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177 } |
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178 // remove findregion divs |
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179 selector = 'div.'+CSS+'findregion'; |
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180 var $findregions = data.$elem.find(selector); |
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181 if ($findregions.length > 0) { |
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182 $findregions.remove(); |
| 1109 | 183 redisplay(data); |
| 184 return; | |
| 185 } | |
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186 // remove most recently added user region |
| 1109 | 187 selector = 'div.'+CSS+'regionURL'; |
| 188 var $region = data.$elem.find(selector).last(); | |
| 189 if ($region.length > 0) { | |
| 190 $regionDiv.remove(); | |
| 191 redisplay(data); | |
| 192 return; | |
| 193 } | |
| 792 | 194 }, |
| 195 | |
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196 // remove all manually added regions (defined through URL "rg" parameter) |
| 1091 | 197 removeAllUserRegions : function (data) { |
| 1067 | 198 if (!data.settings.isRegionVisible) { |
| 199 alert("Please turn on regions visibility!"); | |
| 200 return; | |
| 201 } | |
| 1109 | 202 var selector = 'div.'+CSS+'regionURL, div.'+CSS+'findregion'; |
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203 var $regionDivs = data.$elem.find(selector); |
| 1107 | 204 if ($regionDivs.length == 0) return; |
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205 $regionDivs.remove(); |
| 1067 | 206 redisplay(data); |
| 207 }, | |
| 208 | |
| 813 | 209 // show/hide regions |
| 1060 | 210 toggleRegions : function (data) { |
| 813 | 211 var show = !data.settings.isRegionVisible; |
| 212 data.settings.isRegionVisible = show; | |
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213 fn.highlightButtons(data, 'regions', show); |
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214 renderRegions(data, 1); |
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215 }, |
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216 |
| 1048 | 217 // show region info in a window |
| 1060 | 218 showRegionInfo : function (data) { |
| 1048 | 219 var $elem = data.$elem; |
| 1102 | 220 var infoSelector = '#'+CSS+'regionInfo'; |
| 1098 | 221 if (fn.isOnScreen(data, infoSelector)) return; // already onscreen |
| 1109 | 222 var $regions = getRegions(data, 'regionURL'); |
| 223 if ($regions.length == 0) return; // no user regions available | |
| 1048 | 224 var html = '\ |
| 1102 | 225 <div id="'+CSS+'regionInfo" class="'+CSS+'keep '+CSS+'regionInfo">\ |
| 226 <table class="'+CSS+'infoheader">\ | |
| 1060 | 227 <tr>\ |
| 1102 | 228 <td class="'+CSS+'infobutton html">HTML</td>\ |
| 229 <td class="'+CSS+'infobutton svgattr">SVG</td>\ | |
| 230 <td class="'+CSS+'infobutton csv">CSV</td>\ | |
| 231 <td class="'+CSS+'infobutton digilib">Digilib</td>\ | |
| 232 <td class="'+CSS+'infobutton x">X</td>\ | |
| 1060 | 233 </tr>\ |
| 234 </table>\ | |
| 1048 | 235 </div>'; |
| 236 $info = $(html); | |
| 237 $info.appendTo($elem); | |
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238 $info.append(regionInfoHTML(data, $regions)); |
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239 $info.append(regionInfoSVG(data, $regions)); |
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240 $info.append(regionInfoCSV(data, $regions)); |
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241 $info.append(regionInfoDigilib(data, $regions)); |
| 1109 | 242 var bind = function (name) { |
| 1060 | 243 $info.find('.'+name).on('click.regioninfo', function () { |
| 1102 | 244 $info.find('div.'+CSS+'info').hide(); |
| 245 $info.find('div.'+CSS+name).show(); | |
| 1060 | 246 fn.centerOnScreen(data, $info); |
| 1107 | 247 return false; |
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248 }); |
| 1048 | 249 }; |
| 250 bind('html'); | |
| 251 bind('svgattr'); | |
| 1060 | 252 bind('csv'); |
| 1048 | 253 bind('digilib'); |
| 1107 | 254 $info.on('click.regioninfo', function () { |
| 255 fn.withdraw($info); | |
| 256 }); | |
| 1048 | 257 $info.find('.x').on('click.regioninfo', function () { |
| 258 fn.withdraw($info); | |
| 259 }); | |
| 260 $info.fadeIn(); | |
| 1060 | 261 fn.centerOnScreen(data, $info); |
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262 }, |
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263 |
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264 // display region coordinates in a selected edit line (for copying) |
| 1095 | 265 showRegionCoords : function (data, $regionDiv) { |
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266 var $elem = data.$elem; |
| 1095 | 267 var rect = $regionDiv.data('rect'); |
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268 var text = $regionDiv.data('text'); |
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269 var coordString = packCoords(rect, ','); |
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270 var html = '\ |
| 1102 | 271 <div id="'+CSS+'regionInfo" class="'+CSS+'keep '+CSS+'regionInfo">\ |
| 1098 | 272 <div>'+text+'</div>\ |
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273 <input name="coords" type="text" size="30" maxlength="40" value="'+coordString+'"/>\ |
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274 </div>'; |
| 1091 | 275 var $info = $(html); |
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276 $info.appendTo($elem); |
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277 $div = $info.find('div'); |
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278 $div.text(text); |
| 1091 | 279 $input = $info.find('input'); |
| 280 $input.on('focus.regioninfo', function (event) { | |
| 281 this.select(); | |
| 282 }); | |
| 283 $input.on('blur.regioninfo', function (event) { | |
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284 fn.withdraw($info); |
| 1091 | 285 return false; |
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286 }); |
| 1091 | 287 $input.on('keypress.regioninfo', function (event) { |
| 1092 | 288 fn.withdraw($info); // OBS: "return false" disables copy! |
| 1091 | 289 }); |
| 290 $input.prop("readonly",true); | |
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291 $info.fadeIn(); |
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292 fn.centerOnScreen(data, $info); |
| 1091 | 293 $input.focus(); |
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294 console.debug('showRegionCoords', coordString); |
| 1092 | 295 }, |
| 1091 | 296 |
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297 // draw a find region from coords and move into view |
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298 regionFromCoords : function (data, coords) { |
| 1095 | 299 var rect = parseCoords(data, coords); |
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300 if (rect == null) { |
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301 alert('invalid coordinates: ' + coords); |
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302 return; |
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303 } |
| 1107 | 304 var attr = { 'class' : CSS+'findregion' }; |
| 1102 | 305 var item = { 'rect' : rect, 'attributes' : attr }; |
| 306 var $regionDiv = addRegionDiv(data, item); | |
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307 var za = data.zoomArea; |
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308 if (!fn.isFullArea(za)) { |
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309 za.setCenter(rect.getCenter()).stayInside(FULL_AREA); |
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310 if (!za.containsRect(rect)) { |
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311 za = FULL_AREA.copy(); |
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312 } |
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313 fn.setZoomArea(data, za); |
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314 } |
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315 console.debug('regionFromCoords', coords, rect, za); |
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316 redisplay(data); |
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317 }, |
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318 |
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319 // highlight regions by id |
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320 highlightRegions : function (data, ids) { |
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321 if (ids == null || ids.length < 1) return; |
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322 var selector = '#'+ids.join(',#'); |
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323 var $regions = data.$elem.find(selector); |
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324 $regions.addClass(CSS+'highlightregion'); |
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325 }, |
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326 |
| 1092 | 327 // find coordinates and display as new region |
| 328 findCoords : function (data) { | |
| 329 var $elem = data.$elem; | |
| 1102 | 330 var findSelector = '#'+CSS+'regionFindCoords'; |
| 1098 | 331 if (fn.isOnScreen(data, findSelector)) return; // already onscreen |
| 1092 | 332 var html = '\ |
| 1102 | 333 <div id="'+CSS+'regionFindCoords" class="'+CSS+'keep '+CSS+'regionInfo">\ |
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334 <div>coordinates to find:</div>\ |
| 1102 | 335 <form class="'+CSS+'form">\ |
| 1092 | 336 <div>\ |
| 1109 | 337 <input class="'+CSS+'input" name="coords" type="text" size="30"/> \ |
| 1092 | 338 </div>\ |
| 1102 | 339 <input class="'+CSS+'submit" type="submit" name="sub" value="Ok"/>\ |
| 340 <input class="'+CSS+'cancel" type="button" value="Cancel"/>\ | |
| 1092 | 341 </form>\ |
| 342 </div>'; | |
| 343 var $info = $(html); | |
| 344 $info.appendTo($elem); | |
| 345 var $form = $info.find('form'); | |
| 1102 | 346 var $input = $info.find('input.'+CSS+'input'); |
| 1092 | 347 // handle submit |
| 348 $form.on('submit', function () { | |
| 349 var coords = $input.val(); | |
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350 actions.regionFromCoords(data, coords); |
| 1092 | 351 fn.withdraw($info); |
| 352 return false; | |
| 1102 | 353 }); |
| 1107 | 354 // handle blur |
| 355 $input.on('blur', function () { | |
| 356 fn.withdraw($info); | |
| 357 }); | |
| 1092 | 358 // handle cancel |
| 1102 | 359 $form.find('.'+CSS+'cancel').on('click', function () { |
| 1092 | 360 fn.withdraw($info); |
| 1102 | 361 }); |
| 1092 | 362 $info.fadeIn(); |
| 363 fn.centerOnScreen(data, $info); | |
| 364 $input.focus(); | |
| 1098 | 365 }, |
| 366 | |
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367 // find a region by text data and higlight it |
| 1098 | 368 findData : function (data) { |
| 369 var $elem = data.$elem; | |
| 1102 | 370 var findSelector = '#'+CSS+'regionFindData'; |
| 1098 | 371 if (fn.isOnScreen(data, findSelector)) return; // already onscreen |
| 372 var textOptions = getTextOptions(data, 'regionHTML'); | |
| 373 var html = '\ | |
| 1102 | 374 <div id="'+CSS+'regionFindData" class="'+CSS+'keep '+CSS+'regionInfo">\ |
| 1098 | 375 <div>text to find:</div>\ |
| 1102 | 376 <form class="'+CSS+'form">\ |
| 1098 | 377 <div>\ |
| 1109 | 378 <select class="'+CSS+'finddata">\ |
| 379 <option/>\ | |
| 1098 | 380 '+textOptions+'\ |
| 381 </select>\ | |
| 382 </div>\ | |
| 1109 | 383 <input class="'+CSS+'input" name="data" type="text" size="30" /> \ |
| 1102 | 384 <input class="'+CSS+'submit" type="submit" name="sub" value="Ok"/>\ |
| 385 <input class="'+CSS+'cancel" type="button" value="Cancel"/>\ | |
| 1098 | 386 </form>\ |
| 387 </div>'; | |
| 388 var $info = $(html); | |
| 389 $info.appendTo($elem); | |
| 390 var $form = $info.find('form'); | |
| 1102 | 391 var $input = $info.find('input.'+CSS+'input'); |
| 1098 | 392 var $select = $info.find('select'); |
| 1109 | 393 var $options = $select.find('option'); |
| 394 // callback if a region is selected by name | |
| 1098 | 395 var findRegion = function () { |
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396 var id = [$select.val()]; |
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397 actions.highlightRegions(data, id); |
| 1098 | 398 fn.withdraw($info); |
| 399 return false; | |
| 400 }; | |
| 1109 | 401 // adapt dropdown, show only matching entries |
| 402 var filterOptions = function (text) { | |
| 403 if (!text) { | |
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404 // not text, display all options, select first (empty) |
| 1109 | 405 $options.show(); |
| 406 $select.prop("selectedIndex", 0); | |
| 407 return; | |
| 408 } | |
| 409 var first = true; | |
| 410 $options.each(function (index) { | |
| 411 var $option = $(this); | |
| 412 // TODO: more sophisticated matching | |
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413 if (matchText($option.text(), text)) { |
| 1109 | 414 $option.show(); |
| 415 if (first) { | |
| 416 $select.prop("selectedIndex", index); | |
| 417 first = false; | |
| 418 } | |
| 419 } else { | |
| 420 if (index > 0) $option.hide(); | |
| 421 } | |
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422 if (first) { // no hit, display and select empty option |
| 1109 | 423 $select.prop("selectedIndex", 0); |
| 424 } | |
| 425 }); | |
| 426 }; | |
| 1098 | 427 // handle submit |
| 428 $form.on('submit', findRegion); | |
| 429 $select.on('change', findRegion); | |
| 1109 | 430 $input.on('keyup', function (event) { |
| 431 // ugly: we need setTimeout here to get an updated val(); | |
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432 window.setTimeout(filterOptions, 100, $input.val()); |
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433 if (event.keyCode == '38' || event.keyCode == '40') { // arrows |
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434 $select.focus(); |
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435 } |
| 1109 | 436 }); |
| 1098 | 437 // handle cancel |
| 1102 | 438 $form.find('.'+CSS+'cancel').on('click', function () { |
| 1098 | 439 fn.withdraw($info); |
| 1102 | 440 }); |
| 1098 | 441 $info.fadeIn(); |
| 442 fn.centerOnScreen(data, $info); | |
| 443 $input.focus(); | |
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444 } |
| 792 | 445 }; |
| 446 | |
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447 // match search text |
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448 var matchText = function (optiontext, text) { |
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449 // sanitize and split |
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450 var parts = text.replace(/([\\\(\)\-\!.+?*])/g, '\\$1').split(/\s+/); |
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451 // match all parts anywhere in optiontext |
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452 var regexparts = $.map(parts, function(part) { |
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453 return '(?=.*'+part+')'; // one lookahead for each part |
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454 }); |
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455 var RE = new RegExp(regexparts.join(''), 'i'); |
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456 var result = optiontext.match(RE); |
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457 return result; |
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458 }; |
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459 |
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460 // make a coords string |
| 1095 | 461 var packCoords = function (rect, sep) { |
| 1091 | 462 if (sep == null) sep = ','; // comma as default separator |
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463 return [ |
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464 fn.cropFloatStr(rect.x), |
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465 fn.cropFloatStr(rect.y), |
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466 fn.cropFloatStr(rect.width), |
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467 fn.cropFloatStr(rect.height) |
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468 ].join(sep); |
| 813 | 469 }; |
| 470 | |
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471 // create a rectangle from a coords string |
| 1095 | 472 var parseCoords = function (data, coords) { |
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473 var pos = coords.match(/[0-9.]+/g); // TODO: check validity? |
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474 if (pos == null) { |
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475 return null; |
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476 } |
| 1092 | 477 var rect = geom.rectangle(pos[0], pos[1], pos[2], pos[3]); |
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478 if (!fn.isNumber(rect.x) || !fn.isNumber(rect.y)) { |
| 1092 | 479 return null; |
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480 } |
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481 if (!rect.getArea()) { |
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482 var pt = rect.getPosition(); |
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483 rect.width = data.settings.regionWidth; |
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484 rect.height = rect.width; |
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485 rect.setCenter(pt); |
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486 } |
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487 return rect; |
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488 }; |
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489 |
| 1095 | 490 // create a new regionDiv and add it to data.$elem |
| 1102 | 491 var newRegionDiv = function (data, attr) { |
| 492 var cls = CSS+'region'; | |
| 1107 | 493 var $regionDiv = $('<div class="'+cls+'"/>'); |
| 1102 | 494 addRegionAttributes(data, $regionDiv, attr); |
| 1095 | 495 data.$elem.append($regionDiv); |
| 496 return $regionDiv; | |
| 497 }; | |
| 498 | |
| 499 // copy attributes to a region div | |
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500 var addRegionAttributes = function (data, $regionDiv, attributes) { |
| 1095 | 501 if (attributes == null) return; |
| 502 if (attributes['class']) { | |
| 503 $regionDiv.addClass(attributes['class']); | |
| 504 delete attributes['class']; | |
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505 } |
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506 if (attributes['href']) { |
| 1102 | 507 $regionDiv.data('href', attributes['href']); |
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508 delete attributes['href']; |
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509 } |
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510 if (attributes['title']) { |
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511 $regionDiv.data('text', attributes['title']); |
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512 } |
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513 // create an ID if none exists |
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514 if (!attributes['id']) { |
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515 attributes['id'] = CSS+IDCOUNT.toString(16); |
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516 IDCOUNT += 1; |
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517 } |
| 1095 | 518 $regionDiv.attr(attributes); |
| 519 }; | |
| 520 | |
| 521 // set region number | |
| 522 var addRegionNumber = function (data, $regionDiv, index) { | |
| 1103 | 523 if (!data.settings.showRegionNumbers) return; |
| 524 if (!fn.isNumber(index)) return; | |
| 1102 | 525 var $number = $('<a class="'+CSS+'regionnumber">'+index+'</a>'); |
| 1095 | 526 $regionDiv.append($number); |
| 527 return $regionDiv; | |
| 528 }; | |
| 529 | |
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530 // construct a region from a rectangle |
| 1102 | 531 var addRegionDiv = function (data, item) { |
| 532 var $regionDiv = newRegionDiv(data, item.attributes); | |
| 1095 | 533 var settings = data.settings; |
| 1102 | 534 // add region number |
| 1103 | 535 addRegionNumber(data, $regionDiv, item.index); |
| 1102 | 536 // add inner HTML |
| 537 if (item.inner) { | |
| 538 $regionDiv.append(item.inner); | |
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539 } |
| 1102 | 540 // store the coordinates in data |
| 541 $regionDiv.data('rect', item.rect); | |
| 542 // trigger a region event on click | |
| 1109 | 543 $regionDiv.on('click.dlRegion', function (event) { |
| 1102 | 544 $(data).trigger('regionClick', [$regionDiv]); |
| 545 }); | |
| 1095 | 546 return $regionDiv; |
| 547 }; | |
| 548 | |
| 1102 | 549 // create regions from a Javascript array of items |
| 550 var createRegionsFromJS = function (data, items) { | |
| 1109 | 551 $.each(items, function (index, item) { |
| 1102 | 552 addRegionDiv(data, item); |
| 553 }); | |
| 554 }; | |
| 555 | |
| 851 | 556 // create regions from URL parameters |
| 557 var createRegionsFromURL = function (data) { | |
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558 var userRegions = unpackRegions(data); |
| 1102 | 559 if (!userRegions) return; |
| 560 createRegionsFromJS(data, userRegions); | |
| 792 | 561 }; |
| 562 | |
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563 // create regions from HTML |
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564 var createRegionsFromHTML = function (data) { |
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565 // regions are defined in "area" tags |
| 1102 | 566 var $areas = data.$elem.find(data.settings.areaSelector); |
| 567 console.debug("createRegionsFromHTML - elems found: ", $areas.length); | |
| 1109 | 568 $areas.each(function (index, area) { |
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569 var $area = $(area); |
| 1102 | 570 // the "title" attribute contains the text for the tooltip |
| 571 var title = $area.attr('title'); | |
| 852 | 572 // the "coords" attribute contains the region coords (0..1) |
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573 var coords = $area.attr('coords'); |
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574 // create the rectangle |
| 1095 | 575 var rect = parseCoords(data, coords); |
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576 if (rect == null) { |
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577 return console.error('bad coords in HTML:', title, coords); |
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578 } |
| 1102 | 579 // mark div class as regionHTML |
| 580 var cls = $area.attr('class') || ''; | |
| 1107 | 581 cls += ' '+CSS+'regionHTML '+CSS+'overlay'; |
| 1102 | 582 var attr = {'class' : cls}; |
| 1095 | 583 // copy attributes |
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584 for (var n in data.settings.regionAttributes) { |
| 1102 | 585 attr[n] = $area.attr(n); |
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586 } |
| 1102 | 587 // copy inner HTML |
| 588 var $inner = $area.contents().clone(); | |
| 589 if (attr.href != null) { | |
| 1025 | 590 // wrap contents in a-tag |
| 1102 | 591 var $a = $('<a href="'+attr.href+'"/>'); |
| 592 $inner = $a.append($inner); | |
| 1025 | 593 } |
| 1102 | 594 var item = {'rect' : rect, 'attributes' : attr, 'inner' : $inner}; |
| 595 var $regionDiv = addRegionDiv(data, item); | |
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596 }); |
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597 }; |
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598 |
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599 // select region divs (HTML or URL) |
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600 var getRegions = function (data, selector) { |
| 1102 | 601 var $regions = data.$elem.find('div.'+CSS+selector); |
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602 return $regions; |
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603 }; |
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604 |
| 1109 | 605 // make HTML option from regions text data |
| 1098 | 606 var getTextOptions = function (data, selector) { |
| 1109 | 607 var sortfunc = data.settings.regionSortString; |
| 608 var options = []; | |
| 609 var createOption = function (index, region) { | |
| 610 var $region = $(region); | |
| 611 var rect = $region.data('rect'); | |
| 1098 | 612 if (rect == null) |
| 613 return null; | |
|
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614 // var coords = packCoords(rect, ','); |
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615 var id = $region.attr('id'); |
| 1109 | 616 var text = $region.data('text'); |
| 617 var sortstring = $region.data('sort') | |
| 618 || (typeof sortfunc === 'function') | |
| 619 ? sortfunc(text) | |
| 620 : text; | |
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621 var option = '<option value="'+id+'">'+text+'</option>'; |
| 1109 | 622 options.push([sortstring, option]); |
| 1098 | 623 }; |
| 624 var $regions = getRegions(data, selector); | |
| 1109 | 625 $.each($regions, createOption); |
| 626 options.sort(function (a, b) { | |
| 627 return a[0].localeCompare(b[0]); | |
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628 }); |
| 1109 | 629 var sorted = $.map(options, function (str, index) { |
| 630 return str[1]; | |
| 631 }); | |
| 632 // prepend an empty option | |
| 633 return sorted.join(''); | |
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634 }; |
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635 |
| 1095 | 636 // html for later insertion |
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637 var regionInfoHTML = function (data, $regions) { |
| 1102 | 638 var $infoDiv = $('<div class="'+CSS+'info '+CSS+'html"/>'); |
| 639 $infoDiv.append($('<div/>').text('<map class="'+CSS+'keep '+CSS+'regioncontent">')); | |
| 1109 | 640 $regions.each(function (index, region) { |
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641 var rect = $(region).data('rect'); |
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642 var coords = packCoords(rect, ','); |
| 1095 | 643 $infoDiv.append($('<div/>').text('<area coords="' + coords + '"/>')); |
| 644 }); | |
| 645 $infoDiv.append($('<div/>').text('</map>')); | |
| 646 return $infoDiv; | |
| 647 }; | |
| 648 | |
| 649 // SVG-style | |
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650 var regionInfoSVG = function (data, $regions) { |
| 1102 | 651 var $infoDiv = $('<div class="'+CSS+'info '+CSS+'svgattr"/>'); |
| 1109 | 652 $regions.each(function (index, region) { |
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653 var rect = $(region).data('rect'); |
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654 var coords = packCoords(rect, ','); |
| 1095 | 655 $infoDiv.append($('<div/>').text('"' + coords + '"')); |
| 656 }); | |
| 657 return $infoDiv; | |
| 658 }; | |
| 659 | |
| 660 // CSV-style | |
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661 var regionInfoCSV = function (data, $regions) { |
| 1102 | 662 var $infoDiv = $('<div class="'+CSS+'info '+CSS+'csv"/>'); |
| 1109 | 663 $regions.each(function (index, region) { |
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664 var rect = $(region).data('rect'); |
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665 var coords = packCoords(rect, ','); |
| 1095 | 666 $infoDiv.append($('<div/>').text(index+1 + ": " + coords)); |
| 667 }); | |
| 668 return $infoDiv; | |
| 669 }; | |
| 670 | |
| 671 // digilib-style (h,w@x,y) | |
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672 var regionInfoDigilib = function (data, $regions) { |
| 1102 | 673 var $infoDiv = $('<div class="'+CSS+'info '+CSS+'digilib"/>'); |
| 1109 | 674 $regions.each(function (index, region) { |
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675 var rect = $(region).data('rect'); |
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676 var coords = packCoords(rect, ','); |
| 1095 | 677 $infoDiv.append($('<div/>').text(coords)); |
| 678 }); | |
| 679 return $infoDiv; | |
| 680 }; | |
| 681 | |
| 813 | 682 // show a region on top of the scaler image |
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683 var renderRegion = function (data, $regionDiv, anim) { |
| 813 | 684 if (!data.imgTrafo) return; |
|
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685 var zoomArea = data.zoomArea; |
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686 var rect = $regionDiv.data('rect').copy(); |
| 813 | 687 var show = data.settings.isRegionVisible; |
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688 if (show && zoomArea.overlapsRect(rect) && !rect.containsRect(zoomArea)) { |
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689 rect.clipTo(zoomArea); |
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690 var screenRect = data.imgTrafo.transform(rect); |
| 1067 | 691 // console.debug("renderRegion: pos=",geom.position(screenRect)); |
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692 if (anim) { |
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693 $regionDiv.fadeIn(); |
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694 } else{ |
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695 $regionDiv.show(); |
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696 } |
| 1024 | 697 // adjustDiv sets wrong coords when called BEFORE show() |
| 851 | 698 screenRect.adjustDiv($regionDiv); |
| 813 | 699 } else { |
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700 if (anim) { |
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701 $regionDiv.fadeOut(); |
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702 } else{ |
| 824 | 703 $regionDiv.hide(); |
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704 } |
| 813 | 705 } |
| 706 }; | |
| 707 | |
| 708 // show regions | |
|
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709 var renderRegions = function (data, anim) { |
| 1109 | 710 var render = function (index, region) { |
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711 renderRegion(data, $(region), anim); |
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712 }; |
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713 var $regions = getRegions(data, 'region') |
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714 $regions.each(render); |
| 813 | 715 }; |
| 716 | |
| 1091 | 717 // read region data from URL parameters |
| 813 | 718 var unpackRegions = function (data) { |
| 719 var rg = data.settings.rg; | |
| 1095 | 720 if (rg == null) return []; |
| 721 var coords = rg.split(","); | |
| 1109 | 722 var regions = $.map(coords, function (coord, index) { |
| 1095 | 723 var pos = coord.split("/", 4); |
| 813 | 724 var rect = geom.rectangle(pos[0], pos[1], pos[2], pos[3]); |
| 1107 | 725 var attr = {'class' : CSS+"regionURL "+CSS+"overlay"}; |
| 1102 | 726 var item = {'rect' : rect, 'index' : index+1, 'attributes' : attr}; |
| 727 return item; | |
| 1095 | 728 }); |
| 729 return regions; | |
| 792 | 730 }; |
| 731 | |
| 1091 | 732 // pack user regions array into a URL parameter string |
| 813 | 733 var packRegions = function (data) { |
| 1102 | 734 var $regions = getRegions(data, 'regionURL'); |
| 1103 | 735 if ($regions.length == 0 || !data.settings.processUserRegions) { |
| 815 | 736 data.settings.rg = null; |
| 737 return; | |
| 738 } | |
| 1109 | 739 var pack = function (region, index) { |
| 1099 | 740 var $region = $(region); |
| 741 var rect = $region.data('rect'); | |
| 1102 | 742 var packed = packCoords(rect, '/'); |
| 743 return packed; | |
| 1099 | 744 }; |
| 1102 | 745 var coords = $.map($regions, pack); |
| 1095 | 746 var rg = coords.join(','); |
| 813 | 747 data.settings.rg = rg; |
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748 console.debug('pack regions:', rg); |
| 792 | 749 }; |
| 750 | |
| 1095 | 751 // zoom to the region coordinates |
| 1109 | 752 var zoomToRegion = function (data, rect) { |
| 753 digilib.actions.zoomArea(data, rect); | |
| 1095 | 754 }; |
| 755 | |
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756 // reload display after a region has been added or removed |
| 813 | 757 var redisplay = function (data) { |
| 1103 | 758 packRegions(data); |
| 813 | 759 fn.redisplay(data); |
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760 }; |
| 813 | 761 |
| 1091 | 762 // event handler, gets called when a newRegion event is triggered |
| 1095 | 763 var handleNewRegion = function (evt, $regionDiv) { |
| 1091 | 764 var data = this; |
| 765 var settings = data.settings; | |
| 1095 | 766 console.debug("regions: handleNewRegion", $regionDiv); |
| 1091 | 767 if (typeof settings.onNewRegion === 'function') { |
| 768 // execute callback | |
| 1095 | 769 return settings.onNewRegion(data, $regionDiv); |
| 1091 | 770 } |
| 771 if (typeof settings.onNewRegion === 'string') { | |
| 772 // execute action | |
| 1095 | 773 return actions[settings.onNewRegion](data, $regionDiv); |
| 1091 | 774 } |
| 775 }; | |
| 776 | |
| 777 // event handler, gets called when a regionClick event is triggered | |
| 1095 | 778 var handleRegionClick = function (evt, $regionDiv) { |
| 1091 | 779 var data = this; |
| 780 var settings = data.settings; | |
| 1095 | 781 console.debug("regions: handleRegionClick", $regionDiv); |
| 782 if ($regionDiv.data('href')) { | |
| 1091 | 783 // follow the href attribute of the region area |
| 1095 | 784 window.location = $regionDiv.data('href'); //TODO: how about target? |
| 1091 | 785 } |
| 786 if (typeof settings.onClickRegion === 'function') { | |
| 787 // execute callback | |
| 1095 | 788 return settings.onClickRegion(data, $regionDiv); |
| 1091 | 789 } |
| 790 if (typeof settings.onClickRegion === 'string') { | |
| 791 // execute action | |
| 1095 | 792 return actions[settings.onClickRegion](data, $regionDiv); |
| 1091 | 793 } |
| 794 }; | |
| 795 | |
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796 // event handler, reads region parameter and creates region divs |
|
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797 var handleSetup = function (evt) { |
| 941 | 798 var data = this; |
|
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799 var settings = data.settings; |
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800 console.debug("regions: handleSetup", settings.rg); |
| 1102 | 801 // regions with content are given in a Javascript array |
| 802 if (settings.regions) { | |
| 803 createRegionsFromJS(data, settings.regions); | |
| 804 } | |
| 1048 | 805 // regions with content are given in HTML divs |
|
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806 if (settings.processHtmlRegions) { |
|
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807 createRegionsFromHTML(data); |
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808 } |
| 1048 | 809 // regions are defined in the URL |
|
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810 if (settings.processUserRegions) { |
| 851 | 811 createRegionsFromURL(data); |
|
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812 } |
|
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813 }; |
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814 |
| 851 | 815 // event handler, sets buttons and shows regions when scaler img is reloaded |
|
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816 var handleUpdate = function (evt) { |
| 941 | 817 var data = this; |
|
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818 console.debug("regions: handleUpdate"); |
| 848 | 819 var settings = data.settings; |
| 820 fn.highlightButtons(data, 'regions' , settings.isRegionVisible); | |
|
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821 renderRegions(data); |
|
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822 }; |
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823 |
| 1048 | 824 // additional buttons |
| 825 var installButtons = function (data) { | |
| 826 var settings = data.settings; | |
| 827 var mode = settings.interactionMode; | |
| 828 var buttonSettings = settings.buttonSettings[mode]; | |
| 1104 | 829 var buttonSet = settings.regionSet; |
| 830 if (settings.processUserRegions) { | |
| 831 var first = buttonSet.slice(0,1); | |
| 832 var rest = buttonSet.slice(1); | |
| 833 buttonSet = first.concat(settings.userRegionSet, rest); | |
| 834 } | |
| 1048 | 835 // set regionSet to [] or '' for no buttons (when showing regions only) |
| 836 if (buttonSet.length && buttonSet.length > 0) { | |
| 837 buttonSettings.regionSet = buttonSet; | |
| 838 buttonSettings.buttonSets.push('regionSet'); | |
| 839 } | |
| 840 }; | |
| 841 | |
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842 // plugin installation called by digilib on plugin object. |
| 1109 | 843 var install = function (plugin) { |
| 813 | 844 digilib = plugin; |
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845 console.debug('installing regions plugin. digilib:', digilib); |
| 1048 | 846 // import digilib functions |
| 847 $.extend(fn, digilib.fn); | |
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848 // import geometry classes |
| 813 | 849 geom = fn.geometry; |
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850 // add defaults, actions, buttons |
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851 $.extend(digilib.defaults, defaults); |
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852 $.extend(digilib.actions, actions); |
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853 $.extend(digilib.buttons, buttons); |
| 1103 | 854 // add "rg" to digilibParamNames |
| 855 digilib.defaults.digilibParamNames.push('rg'); | |
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856 }; |
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857 |
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858 // plugin initialization |
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859 var init = function (data) { |
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860 console.debug('initialising regions plugin. data:', data); |
| 835 | 861 var $elem = data.$elem; |
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862 var settings = data.settings; |
| 1102 | 863 CSS = settings.cssPrefix; |
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864 FULL_AREA = geom.rectangle(0, 0, 1, 1); |
| 1048 | 865 // install event handlers |
| 848 | 866 var $data = $(data); |
| 920 | 867 $data.on('setup', handleSetup); |
| 868 $data.on('update', handleUpdate); | |
| 1091 | 869 $data.on('newRegion', handleNewRegion); |
| 870 $data.on('regionClick', handleRegionClick); | |
| 1095 | 871 // default: autoZoom to region, when clicked - DEPRECATED |
| 872 if (settings.autoZoomOnClick && settings.onClickRegion == null) { | |
| 873 settings.onClickRegion = zoomToRegion; | |
| 874 } | |
| 875 // install region buttons if user defined regions are allowed | |
| 1104 | 876 if (digilib.plugins.buttons != null) { |
| 1103 | 877 installButtons(data); |
| 813 | 878 } |
| 792 | 879 }; |
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880 |
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881 // plugin object with name and install/init methods |
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882 // shared objects filled by digilib on registration |
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883 var pluginProperties = { |
| 1048 | 884 name : 'regions', |
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885 install : install, |
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886 init : init, |
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887 buttons : {}, |
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888 actions : {}, |
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889 fn : {}, |
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890 plugins : {} |
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891 }; |
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892 |
| 792 | 893 if ($.fn.digilib == null) { |
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894 $.error("jquery.digilib.regions must be loaded after jquery.digilib!"); |
| 792 | 895 } else { |
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896 $.fn.digilib('plugin', pluginProperties); |
| 792 | 897 } |
| 898 })(jQuery); |