Mercurial > hg > digilib-old
annotate webapp/src/main/webapp/jquery/jquery.digilib.regions.js @ 1107:365f95a14057
factor out defineArea, using overlay div
| author | hertzhaft |
|---|---|
| date | Sat, 27 Oct 2012 00:06:29 +0200 |
| parents | 415da4e4b76b |
| children | ae796bcac7f4 |
| 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 | |
| 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 |
| 792 | 60 var buttons = { |
| 1091 | 61 defineregion : { |
| 62 onclick : "defineUserRegion", | |
| 813 | 63 tooltip : "define a region", |
| 792 | 64 icon : "addregion.png" |
| 65 }, | |
| 1091 | 66 removeregion : { |
| 67 onclick : "removeUserRegion", | |
| 68 tooltip : "delete the last user defined region", | |
| 792 | 69 icon : "delregion.png" |
| 70 }, | |
| 1091 | 71 removeallregions : { |
| 72 onclick : "removeAllUserRegions", | |
| 73 tooltip : "delete all user defined regions", | |
| 1067 | 74 icon : "delallregions.png" |
| 75 }, | |
| 792 | 76 regions : { |
| 77 onclick : "toggleRegions", | |
| 78 tooltip : "show or hide regions", | |
| 79 icon : "regions.png" | |
| 80 }, | |
| 1092 | 81 findcoords : { |
| 82 onclick : "findCoords", | |
| 1098 | 83 tooltip : "find a region by entering its relative coordinates", |
| 84 icon : "regions.png" | |
| 85 }, | |
| 86 finddata : { | |
| 87 onclick : "findData", | |
| 88 tooltip : "find a region by entering text", | |
| 1092 | 89 icon : "regions.png" |
| 90 }, | |
| 1048 | 91 regioninfo : { |
| 855 | 92 onclick : "showRegionInfo", |
| 1091 | 93 tooltip : "show information about user defined regions", |
| 792 | 94 icon : "regioninfo.png" |
| 95 } | |
| 96 }; | |
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97 |
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98 var defaults = { |
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99 // are regions shown? |
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100 'isRegionVisible' : true, |
| 813 | 101 // are region numbers shown? |
| 1023 | 102 'showRegionNumbers' : true, |
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103 // default width for region when only point is given |
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104 'regionWidth' : 0.005, |
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105 // is there region content in the page? |
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106 'processHtmlRegions' : false, |
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107 // region defined by users and in the URL |
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108 'processUserRegions' : true, |
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109 // callback for click on region |
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110 'onClickRegion' : null, |
| 1091 | 111 // callback when new user region is defined |
| 112 'onNewRegion' : null, | |
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113 // turn any region into a clickable link to its detail view (DEPRECATED) |
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114 'autoZoomOnClick' : false, |
| 1091 | 115 // css selector for area/a elements (must also be marked with class "dl-keep") |
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116 'areaSelector' : 'map.dl-regioncontent area, map.dl-regioncontent a', |
| 1104 | 117 // general buttonset of this plugin |
| 118 'regionSet' : ['regions', 'findcoords', 'finddata', 'lessoptions'], | |
| 119 // buttonset for region editing by user | |
| 120 'userRegionSet' : ['defineregion', 'removeregion', 'removeallregions', 'regioninfo'], | |
| 813 | 121 // url param for regions |
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122 'rg' : null, |
| 1102 | 123 // array with region data |
| 124 'regions' : null, | |
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125 // region attributes to copy from HTML |
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126 'regionAttributes' : { |
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127 'id' :1, |
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128 'href' :1, |
| 1102 | 129 'name' :1, |
| 130 'alt' :1, | |
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131 'target':1, |
| 1102 | 132 'title' :1, |
| 133 'style' :1 | |
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134 } |
| 813 | 135 }; |
| 792 | 136 |
| 137 var actions = { | |
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138 |
| 792 | 139 // define a region interactively with two clicked points |
| 1091 | 140 defineUserRegion : function(data) { |
| 813 | 141 if (!data.settings.isRegionVisible) { |
| 142 alert("Please turn on regions visibility!"); | |
| 143 return; | |
| 144 } | |
| 1107 | 145 var onComplete = function(data, rect) { |
| 146 if (rect == null) return; | |
| 1103 | 147 var count = getRegions(data, 'regionURL').length; |
| 1107 | 148 var attr = {'class' : CSS+'regionURL '+CSS+'overlay'}; |
| 149 var item = {'rect' : rect, 'index' : count, 'attributes' : attr}; | |
| 150 var $regionDiv = addRegionDiv(data, item); | |
| 1091 | 151 fn.highlightButtons(data, 'defineregion', 0); |
| 813 | 152 redisplay(data); |
| 1095 | 153 $(data).trigger('newRegion', [$regionDiv]); |
| 1107 | 154 }; |
| 1091 | 155 fn.highlightButtons(data, 'defineregion', 1); |
| 1107 | 156 fn.defineArea(data, onComplete, CSS+'regionArea'); |
| 792 | 157 }, |
| 158 | |
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159 // remove the last added URL region |
| 1091 | 160 removeUserRegion : function (data) { |
| 813 | 161 if (!data.settings.isRegionVisible) { |
| 162 alert("Please turn on regions visibility!"); | |
| 163 return; | |
| 164 } | |
| 1102 | 165 var selector = 'div.'+CSS+'regionURL'; |
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166 var $regionDiv = data.$elem.find(selector).last(); |
| 1107 | 167 if ($regionDiv.length == 0) return; |
| 792 | 168 $regionDiv.remove(); |
| 813 | 169 redisplay(data); |
| 792 | 170 }, |
| 171 | |
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172 // remove all manually added regions (defined through URL "rg" parameter) |
| 1091 | 173 removeAllUserRegions : function (data) { |
| 1067 | 174 if (!data.settings.isRegionVisible) { |
| 175 alert("Please turn on regions visibility!"); | |
| 176 return; | |
| 177 } | |
| 1102 | 178 var selector = 'div.'+CSS+'regionURL'; |
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179 var $regionDivs = data.$elem.find(selector); |
| 1107 | 180 if ($regionDivs.length == 0) return; |
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181 $regionDivs.remove(); |
| 1067 | 182 redisplay(data); |
| 183 }, | |
| 184 | |
| 813 | 185 // show/hide regions |
| 1060 | 186 toggleRegions : function (data) { |
| 813 | 187 var show = !data.settings.isRegionVisible; |
| 188 data.settings.isRegionVisible = show; | |
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189 fn.highlightButtons(data, 'regions', show); |
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190 renderRegions(data, 1); |
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191 }, |
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192 |
| 1048 | 193 // show region info in a window |
| 1060 | 194 showRegionInfo : function (data) { |
| 1048 | 195 var $elem = data.$elem; |
| 1102 | 196 var infoSelector = '#'+CSS+'regionInfo'; |
| 1098 | 197 if (fn.isOnScreen(data, infoSelector)) return; // already onscreen |
| 1048 | 198 var html = '\ |
| 1102 | 199 <div id="'+CSS+'regionInfo" class="'+CSS+'keep '+CSS+'regionInfo">\ |
| 200 <table class="'+CSS+'infoheader">\ | |
| 1060 | 201 <tr>\ |
| 1102 | 202 <td class="'+CSS+'infobutton html">HTML</td>\ |
| 203 <td class="'+CSS+'infobutton svgattr">SVG</td>\ | |
| 204 <td class="'+CSS+'infobutton csv">CSV</td>\ | |
| 205 <td class="'+CSS+'infobutton digilib">Digilib</td>\ | |
| 206 <td class="'+CSS+'infobutton x">X</td>\ | |
| 1060 | 207 </tr>\ |
| 208 </table>\ | |
| 1048 | 209 </div>'; |
| 210 $info = $(html); | |
| 211 $info.appendTo($elem); | |
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212 var $regions = getRegions(data, 'regionURL'); |
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213 $info.append(regionInfoHTML(data, $regions)); |
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214 $info.append(regionInfoSVG(data, $regions)); |
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215 $info.append(regionInfoCSV(data, $regions)); |
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216 $info.append(regionInfoDigilib(data, $regions)); |
| 1048 | 217 var bind = function(name) { |
| 1060 | 218 $info.find('.'+name).on('click.regioninfo', function () { |
| 1102 | 219 $info.find('div.'+CSS+'info').hide(); |
| 220 $info.find('div.'+CSS+name).show(); | |
| 1060 | 221 fn.centerOnScreen(data, $info); |
| 1107 | 222 return false; |
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223 }); |
| 1048 | 224 }; |
| 225 bind('html'); | |
| 226 bind('svgattr'); | |
| 1060 | 227 bind('csv'); |
| 1048 | 228 bind('digilib'); |
| 1107 | 229 $info.on('click.regioninfo', function () { |
| 230 fn.withdraw($info); | |
| 231 }); | |
| 1048 | 232 $info.find('.x').on('click.regioninfo', function () { |
| 233 fn.withdraw($info); | |
| 234 }); | |
| 235 $info.fadeIn(); | |
| 1060 | 236 fn.centerOnScreen(data, $info); |
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237 }, |
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238 |
| 1091 | 239 // display region coordinates in an edit line |
| 1095 | 240 showRegionCoords : function (data, $regionDiv) { |
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241 var $elem = data.$elem; |
| 1095 | 242 var rect = $regionDiv.data('rect'); |
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243 var text = $regionDiv.data('text'); |
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244 var coordString = packCoords(rect, ','); |
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245 var html = '\ |
| 1102 | 246 <div id="'+CSS+'regionInfo" class="'+CSS+'keep '+CSS+'regionInfo">\ |
| 1098 | 247 <div>'+text+'</div>\ |
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248 <input name="coords" type="text" size="30" maxlength="40" value="'+coordString+'"/>\ |
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249 </div>'; |
| 1091 | 250 var $info = $(html); |
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251 $info.appendTo($elem); |
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252 $div = $info.find('div'); |
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253 $div.text(text); |
| 1091 | 254 $input = $info.find('input'); |
| 255 $input.on('focus.regioninfo', function (event) { | |
| 256 this.select(); | |
| 257 }); | |
| 258 $input.on('blur.regioninfo', function (event) { | |
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259 fn.withdraw($info); |
| 1091 | 260 return false; |
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261 }); |
| 1091 | 262 $input.on('keypress.regioninfo', function (event) { |
| 1092 | 263 fn.withdraw($info); // OBS: "return false" disables copy! |
| 1091 | 264 }); |
| 265 $input.prop("readonly",true); | |
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266 $info.fadeIn(); |
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267 fn.centerOnScreen(data, $info); |
| 1091 | 268 $input.focus(); |
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269 console.debug('showRegionCoords', coordString); |
| 1092 | 270 }, |
| 1091 | 271 |
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272 // draw a find region from coords and move into view |
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273 regionFromCoords : function (data, coords) { |
| 1095 | 274 var rect = parseCoords(data, coords); |
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275 if (rect == null) { |
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276 alert('invalid coordinates: ' + coords); |
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277 return; |
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278 } |
| 1107 | 279 var attr = { 'class' : CSS+'findregion' }; |
| 1102 | 280 var item = { 'rect' : rect, 'attributes' : attr }; |
| 281 var $regionDiv = addRegionDiv(data, item); | |
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282 var za = data.zoomArea; |
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283 if (!fn.isFullArea(za)) { |
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284 za.setCenter(rect.getCenter()).stayInside(FULL_AREA); |
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285 if (!za.containsRect(rect)) { |
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286 za = FULL_AREA.copy(); |
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287 } |
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288 fn.setZoomArea(data, za); |
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289 } |
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290 console.debug('regionFromCoords', coords, rect, za); |
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291 redisplay(data); |
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292 }, |
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293 |
| 1092 | 294 // find coordinates and display as new region |
| 295 findCoords : function (data) { | |
| 296 var $elem = data.$elem; | |
| 1102 | 297 var findSelector = '#'+CSS+'regionFindCoords'; |
| 1098 | 298 if (fn.isOnScreen(data, findSelector)) return; // already onscreen |
| 1092 | 299 var html = '\ |
| 1102 | 300 <div id="'+CSS+'regionFindCoords" class="'+CSS+'keep '+CSS+'regionInfo">\ |
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301 <div>coordinates to find:</div>\ |
| 1102 | 302 <form class="'+CSS+'form">\ |
| 1092 | 303 <div>\ |
| 1102 | 304 <input class="'+CSS+'input" name="coords" type="text" size="30" maxlength="40"/> \ |
| 1092 | 305 </div>\ |
| 1102 | 306 <input class="'+CSS+'submit" type="submit" name="sub" value="Ok"/>\ |
| 307 <input class="'+CSS+'cancel" type="button" value="Cancel"/>\ | |
| 1092 | 308 </form>\ |
| 309 </div>'; | |
| 310 var $info = $(html); | |
| 311 $info.appendTo($elem); | |
| 312 var $form = $info.find('form'); | |
| 1102 | 313 var $input = $info.find('input.'+CSS+'input'); |
| 1092 | 314 // handle submit |
| 315 $form.on('submit', function () { | |
| 316 var coords = $input.val(); | |
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317 actions.regionFromCoords(data, coords); |
| 1092 | 318 fn.withdraw($info); |
| 319 return false; | |
| 1102 | 320 }); |
| 1107 | 321 // handle blur |
| 322 $input.on('blur', function () { | |
| 323 fn.withdraw($info); | |
| 324 }); | |
| 1092 | 325 // handle cancel |
| 1102 | 326 $form.find('.'+CSS+'cancel').on('click', function () { |
| 1092 | 327 fn.withdraw($info); |
| 1102 | 328 }); |
| 1092 | 329 $info.fadeIn(); |
| 330 fn.centerOnScreen(data, $info); | |
| 331 $input.focus(); | |
| 1098 | 332 }, |
| 333 | |
| 334 // find text data and display as new region | |
| 335 findData : function (data) { | |
| 336 var $elem = data.$elem; | |
| 1102 | 337 var findSelector = '#'+CSS+'regionFindData'; |
| 1098 | 338 if (fn.isOnScreen(data, findSelector)) return; // already onscreen |
| 339 var textOptions = getTextOptions(data, 'regionHTML'); | |
| 340 var html = '\ | |
| 1102 | 341 <div id="'+CSS+'regionFindData" class="'+CSS+'keep '+CSS+'regionInfo">\ |
| 1098 | 342 <div>text to find:</div>\ |
| 1102 | 343 <form class="'+CSS+'form">\ |
| 1098 | 344 <div>\ |
| 1102 | 345 <select class="'+CSS+'findData">\ |
| 1098 | 346 '+textOptions+'\ |
| 347 </select>\ | |
| 348 </div>\ | |
| 1102 | 349 <input class="'+CSS+'input" name="data" type="text" size="30" maxlength="40"/> \ |
| 350 <input class="'+CSS+'submit" type="submit" name="sub" value="Ok"/>\ | |
| 351 <input class="'+CSS+'cancel" type="button" value="Cancel"/>\ | |
| 1098 | 352 </form>\ |
| 353 </div>'; | |
| 354 var $info = $(html); | |
| 355 $info.appendTo($elem); | |
| 356 var $form = $info.find('form'); | |
| 1102 | 357 var $input = $info.find('input.'+CSS+'input'); |
| 1098 | 358 var $select = $info.find('select'); |
| 359 var findRegion = function () { | |
| 360 var coords = $select.val(); | |
| 361 actions.regionFromCoords(data, coords); | |
| 362 fn.withdraw($info); | |
| 363 return false; | |
| 364 }; | |
| 365 // handle submit | |
| 366 $form.on('submit', findRegion); | |
| 367 $select.on('change', findRegion); | |
| 368 // handle cancel | |
| 1102 | 369 $form.find('.'+CSS+'cancel').on('click', function () { |
| 1098 | 370 fn.withdraw($info); |
| 1102 | 371 }); |
| 1098 | 372 $info.fadeIn(); |
| 373 fn.centerOnScreen(data, $info); | |
| 374 $input.focus(); | |
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375 } |
| 792 | 376 }; |
| 377 | |
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378 // make a coords string |
| 1095 | 379 var packCoords = function (rect, sep) { |
| 1091 | 380 if (sep == null) sep = ','; // comma as default separator |
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381 return [ |
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382 fn.cropFloatStr(rect.x), |
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383 fn.cropFloatStr(rect.y), |
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384 fn.cropFloatStr(rect.width), |
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385 fn.cropFloatStr(rect.height) |
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386 ].join(sep); |
| 813 | 387 }; |
| 388 | |
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389 // create a rectangle from a coords string |
| 1095 | 390 var parseCoords = function (data, coords) { |
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391 var pos = coords.match(/[0-9.]+/g); // TODO: check validity? |
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392 if (pos == null) { |
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393 return null; |
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394 } |
| 1092 | 395 var rect = geom.rectangle(pos[0], pos[1], pos[2], pos[3]); |
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396 if (!fn.isNumber(rect.x) || !fn.isNumber(rect.y)) { |
| 1092 | 397 return null; |
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398 } |
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399 if (!rect.getArea()) { |
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400 var pt = rect.getPosition(); |
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401 rect.width = data.settings.regionWidth; |
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402 rect.height = rect.width; |
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403 rect.setCenter(pt); |
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404 } |
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405 return rect; |
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406 }; |
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407 |
| 1095 | 408 // create a new regionDiv and add it to data.$elem |
| 1102 | 409 var newRegionDiv = function (data, attr) { |
| 410 var cls = CSS+'region'; | |
| 1107 | 411 var $regionDiv = $('<div class="'+cls+'"/>'); |
| 1102 | 412 addRegionAttributes(data, $regionDiv, attr); |
| 1095 | 413 data.$elem.append($regionDiv); |
| 414 return $regionDiv; | |
| 415 }; | |
| 416 | |
| 417 // copy attributes to a region div | |
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418 var addRegionAttributes = function (data, $regionDiv, attributes) { |
| 1095 | 419 if (attributes == null) return; |
| 420 if (attributes['class']) { | |
| 421 $regionDiv.addClass(attributes['class']); | |
| 422 delete attributes['class']; | |
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423 } |
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424 if (attributes['href']) { |
| 1102 | 425 $regionDiv.data('href', attributes['href']); |
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426 delete attributes['href']; |
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427 } |
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428 if (attributes['title']) { |
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429 $regionDiv.data('text', attributes['title']); |
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430 } |
| 1095 | 431 $regionDiv.attr(attributes); |
| 432 }; | |
| 433 | |
| 434 // set region number | |
| 435 var addRegionNumber = function (data, $regionDiv, index) { | |
| 1103 | 436 if (!data.settings.showRegionNumbers) return; |
| 437 if (!fn.isNumber(index)) return; | |
| 1102 | 438 var $number = $('<a class="'+CSS+'regionnumber">'+index+'</a>'); |
| 1095 | 439 $regionDiv.append($number); |
| 440 return $regionDiv; | |
| 441 }; | |
| 442 | |
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443 // construct a region from a rectangle |
| 1102 | 444 var addRegionDiv = function (data, item) { |
| 445 var $regionDiv = newRegionDiv(data, item.attributes); | |
| 1095 | 446 var settings = data.settings; |
| 1102 | 447 // add region number |
| 1103 | 448 addRegionNumber(data, $regionDiv, item.index); |
| 1102 | 449 // add inner HTML |
| 450 if (item.inner) { | |
| 451 $regionDiv.append(item.inner); | |
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452 } |
| 1102 | 453 // store the coordinates in data |
| 454 $regionDiv.data('rect', item.rect); | |
| 455 // trigger a region event on click | |
| 1095 | 456 $regionDiv.on('click.dlRegion', function(evt) { |
| 1102 | 457 $(data).trigger('regionClick', [$regionDiv]); |
| 458 }); | |
| 1095 | 459 return $regionDiv; |
| 460 }; | |
| 461 | |
| 1102 | 462 // create regions from a Javascript array of items |
| 463 var createRegionsFromJS = function (data, items) { | |
| 464 $.each(items, function(index, item) { | |
| 465 addRegionDiv(data, item); | |
| 466 }); | |
| 467 }; | |
| 468 | |
| 851 | 469 // create regions from URL parameters |
| 470 var createRegionsFromURL = function (data) { | |
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471 var userRegions = unpackRegions(data); |
| 1102 | 472 if (!userRegions) return; |
| 473 createRegionsFromJS(data, userRegions); | |
| 792 | 474 }; |
| 475 | |
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476 // create regions from HTML |
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477 var createRegionsFromHTML = function (data) { |
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478 // regions are defined in "area" tags |
| 1102 | 479 var $areas = data.$elem.find(data.settings.areaSelector); |
| 480 console.debug("createRegionsFromHTML - elems found: ", $areas.length); | |
| 481 $areas.each(function(index, area) { | |
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482 var $area = $(area); |
| 1102 | 483 // the "title" attribute contains the text for the tooltip |
| 484 var title = $area.attr('title'); | |
| 852 | 485 // the "coords" attribute contains the region coords (0..1) |
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486 var coords = $area.attr('coords'); |
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487 // create the rectangle |
| 1095 | 488 var rect = parseCoords(data, coords); |
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489 if (rect == null) { |
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490 return console.error('bad coords in HTML:', title, coords); |
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491 } |
| 1102 | 492 // mark div class as regionHTML |
| 493 var cls = $area.attr('class') || ''; | |
| 1107 | 494 cls += ' '+CSS+'regionHTML '+CSS+'overlay'; |
| 1102 | 495 var attr = {'class' : cls}; |
| 1095 | 496 // copy attributes |
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497 for (var n in data.settings.regionAttributes) { |
| 1102 | 498 attr[n] = $area.attr(n); |
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499 } |
| 1102 | 500 // copy inner HTML |
| 501 var $inner = $area.contents().clone(); | |
| 502 if (attr.href != null) { | |
| 1025 | 503 // wrap contents in a-tag |
| 1102 | 504 var $a = $('<a href="'+attr.href+'"/>'); |
| 505 $inner = $a.append($inner); | |
| 1025 | 506 } |
| 1102 | 507 var item = {'rect' : rect, 'attributes' : attr, 'inner' : $inner}; |
| 508 var $regionDiv = addRegionDiv(data, item); | |
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509 }); |
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510 }; |
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511 |
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512 // select region divs (HTML or URL) |
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513 var getRegions = function (data, selector) { |
| 1102 | 514 var $regions = data.$elem.find('div.'+CSS+selector); |
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515 return $regions; |
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516 }; |
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517 |
| 1098 | 518 // make text data options html |
| 519 var getTextOptions = function (data, selector) { | |
| 1102 | 520 var createOption = function(item, index) { |
| 1098 | 521 var $item = $(item); |
| 522 var rect = $item.data('rect'); | |
| 523 if (rect == null) | |
| 524 return null; | |
| 525 var coords = packCoords(rect, ','); | |
| 526 var text = $item.data('text'); | |
| 527 return '<option value="'+coords+'">'+text+'</option>'; | |
| 528 }; | |
| 529 var $regions = getRegions(data, selector); | |
| 1102 | 530 var options = $.map($regions, createOption); |
| 1098 | 531 return options.join(''); |
| 532 }; | |
| 533 | |
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534 // list of HTML regions matching text in its title attribute |
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535 var matchRegionText = function (data, text) { |
| 1098 | 536 var $regions = getRegions(data, 'regionHTML'); |
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537 var re = new RegExp(text); |
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538 return $.grep($regions, function($item, index) { |
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539 return re.match($item.data('text')); |
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540 }); |
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541 }; |
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542 |
| 1095 | 543 // html for later insertion |
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544 var regionInfoHTML = function (data, $regions) { |
| 1102 | 545 var $infoDiv = $('<div class="'+CSS+'info '+CSS+'html"/>'); |
| 546 $infoDiv.append($('<div/>').text('<map class="'+CSS+'keep '+CSS+'regioncontent">')); | |
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547 $regions.each(function(index, region) { |
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548 var rect = $(region).data('rect'); |
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549 var coords = packCoords(rect, ','); |
| 1095 | 550 $infoDiv.append($('<div/>').text('<area coords="' + coords + '"/>')); |
| 551 }); | |
| 552 $infoDiv.append($('<div/>').text('</map>')); | |
| 553 return $infoDiv; | |
| 554 }; | |
| 555 | |
| 556 // SVG-style | |
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557 var regionInfoSVG = function (data, $regions) { |
| 1102 | 558 var $infoDiv = $('<div class="'+CSS+'info '+CSS+'svgattr"/>'); |
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559 $regions.each(function(index, region) { |
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560 var rect = $(region).data('rect'); |
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561 var coords = packCoords(rect, ','); |
| 1095 | 562 $infoDiv.append($('<div/>').text('"' + coords + '"')); |
| 563 }); | |
| 564 return $infoDiv; | |
| 565 }; | |
| 566 | |
| 567 // CSV-style | |
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568 var regionInfoCSV = function (data, $regions) { |
| 1102 | 569 var $infoDiv = $('<div class="'+CSS+'info '+CSS+'csv"/>'); |
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570 $regions.each(function(index, region) { |
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571 var rect = $(region).data('rect'); |
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572 var coords = packCoords(rect, ','); |
| 1095 | 573 $infoDiv.append($('<div/>').text(index+1 + ": " + coords)); |
| 574 }); | |
| 575 return $infoDiv; | |
| 576 }; | |
| 577 | |
| 578 // digilib-style (h,w@x,y) | |
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579 var regionInfoDigilib = function (data, $regions) { |
| 1102 | 580 var $infoDiv = $('<div class="'+CSS+'info '+CSS+'digilib"/>'); |
|
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581 $regions.each(function(index, region) { |
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582 var rect = $(region).data('rect'); |
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583 var coords = packCoords(rect, ','); |
| 1095 | 584 $infoDiv.append($('<div/>').text(coords)); |
| 585 }); | |
| 586 return $infoDiv; | |
| 587 }; | |
| 588 | |
| 813 | 589 // show a region on top of the scaler image |
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590 var renderRegion = function (data, $regionDiv, anim) { |
| 813 | 591 if (!data.imgTrafo) return; |
|
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592 var zoomArea = data.zoomArea; |
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593 var rect = $regionDiv.data('rect').copy(); |
| 813 | 594 var show = data.settings.isRegionVisible; |
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595 if (show && zoomArea.overlapsRect(rect) && !rect.containsRect(zoomArea)) { |
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596 rect.clipTo(zoomArea); |
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597 var screenRect = data.imgTrafo.transform(rect); |
| 1067 | 598 // console.debug("renderRegion: pos=",geom.position(screenRect)); |
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599 if (anim) { |
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600 $regionDiv.fadeIn(); |
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601 } else{ |
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602 $regionDiv.show(); |
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603 } |
| 1024 | 604 // adjustDiv sets wrong coords when called BEFORE show() |
| 851 | 605 screenRect.adjustDiv($regionDiv); |
| 813 | 606 } else { |
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607 if (anim) { |
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608 $regionDiv.fadeOut(); |
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609 } else{ |
| 824 | 610 $regionDiv.hide(); |
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611 } |
| 813 | 612 } |
| 613 }; | |
| 614 | |
| 615 // show regions | |
|
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616 var renderRegions = function (data, anim) { |
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617 var render = function(index, region) { |
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618 renderRegion(data, $(region), anim); |
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619 }; |
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620 var $regions = getRegions(data, 'region') |
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621 $regions.each(render); |
| 813 | 622 }; |
| 623 | |
| 1091 | 624 // read region data from URL parameters |
| 813 | 625 var unpackRegions = function (data) { |
| 626 var rg = data.settings.rg; | |
| 1095 | 627 if (rg == null) return []; |
| 628 var coords = rg.split(","); | |
| 1098 | 629 var regions = $.map(coords, function(coord, index) { |
| 1095 | 630 var pos = coord.split("/", 4); |
| 813 | 631 var rect = geom.rectangle(pos[0], pos[1], pos[2], pos[3]); |
| 1107 | 632 var attr = {'class' : CSS+"regionURL "+CSS+"overlay"}; |
| 1102 | 633 var item = {'rect' : rect, 'index' : index+1, 'attributes' : attr}; |
| 634 return item; | |
| 1095 | 635 }); |
| 636 return regions; | |
| 792 | 637 }; |
| 638 | |
| 1091 | 639 // pack user regions array into a URL parameter string |
| 813 | 640 var packRegions = function (data) { |
| 1102 | 641 var $regions = getRegions(data, 'regionURL'); |
| 1103 | 642 if ($regions.length == 0 || !data.settings.processUserRegions) { |
| 815 | 643 data.settings.rg = null; |
| 644 return; | |
| 645 } | |
| 1102 | 646 var pack = function(region, index) { |
| 1099 | 647 var $region = $(region); |
| 648 var rect = $region.data('rect'); | |
| 1102 | 649 var packed = packCoords(rect, '/'); |
| 650 return packed; | |
| 1099 | 651 }; |
| 1102 | 652 var coords = $.map($regions, pack); |
| 1095 | 653 var rg = coords.join(','); |
| 813 | 654 data.settings.rg = rg; |
|
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655 console.debug('pack regions:', rg); |
| 792 | 656 }; |
| 657 | |
| 1095 | 658 // zoom to the region coordinates |
| 659 var zoomToRegion = function (data, region) { | |
| 660 digilib.actions.zoomArea(data, region); | |
| 661 }; | |
| 662 | |
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663 // reload display after a region has been added or removed |
| 813 | 664 var redisplay = function (data) { |
| 1103 | 665 packRegions(data); |
| 813 | 666 fn.redisplay(data); |
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667 }; |
| 813 | 668 |
| 1091 | 669 // event handler, gets called when a newRegion event is triggered |
| 1095 | 670 var handleNewRegion = function (evt, $regionDiv) { |
| 1091 | 671 var data = this; |
| 672 var settings = data.settings; | |
| 1095 | 673 console.debug("regions: handleNewRegion", $regionDiv); |
| 1091 | 674 if (typeof settings.onNewRegion === 'function') { |
| 675 // execute callback | |
| 1095 | 676 return settings.onNewRegion(data, $regionDiv); |
| 1091 | 677 } |
| 678 if (typeof settings.onNewRegion === 'string') { | |
| 679 // execute action | |
| 1095 | 680 return actions[settings.onNewRegion](data, $regionDiv); |
| 1091 | 681 } |
| 682 }; | |
| 683 | |
| 684 // event handler, gets called when a regionClick event is triggered | |
| 1095 | 685 var handleRegionClick = function (evt, $regionDiv) { |
| 1091 | 686 var data = this; |
| 687 var settings = data.settings; | |
| 1095 | 688 console.debug("regions: handleRegionClick", $regionDiv); |
| 689 if ($regionDiv.data('href')) { | |
| 1091 | 690 // follow the href attribute of the region area |
| 1095 | 691 window.location = $regionDiv.data('href'); //TODO: how about target? |
| 1091 | 692 } |
| 693 if (typeof settings.onClickRegion === 'function') { | |
| 694 // execute callback | |
| 1095 | 695 return settings.onClickRegion(data, $regionDiv); |
| 1091 | 696 } |
| 697 if (typeof settings.onClickRegion === 'string') { | |
| 698 // execute action | |
| 1095 | 699 return actions[settings.onClickRegion](data, $regionDiv); |
| 1091 | 700 } |
| 701 }; | |
| 702 | |
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703 // event handler, reads region parameter and creates region divs |
|
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704 var handleSetup = function (evt) { |
| 941 | 705 var data = this; |
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706 var settings = data.settings; |
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707 console.debug("regions: handleSetup", settings.rg); |
| 1102 | 708 // regions with content are given in a Javascript array |
| 709 if (settings.regions) { | |
| 710 createRegionsFromJS(data, settings.regions); | |
| 711 } | |
| 1048 | 712 // regions with content are given in HTML divs |
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713 if (settings.processHtmlRegions) { |
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714 createRegionsFromHTML(data); |
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715 } |
| 1048 | 716 // regions are defined in the URL |
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717 if (settings.processUserRegions) { |
| 851 | 718 createRegionsFromURL(data); |
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719 } |
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720 }; |
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721 |
| 851 | 722 // event handler, sets buttons and shows regions when scaler img is reloaded |
|
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723 var handleUpdate = function (evt) { |
| 941 | 724 var data = this; |
|
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725 console.debug("regions: handleUpdate"); |
| 848 | 726 var settings = data.settings; |
| 727 fn.highlightButtons(data, 'regions' , settings.isRegionVisible); | |
|
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728 renderRegions(data); |
|
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729 }; |
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730 |
| 1048 | 731 // additional buttons |
| 732 var installButtons = function (data) { | |
| 733 var settings = data.settings; | |
| 734 var mode = settings.interactionMode; | |
| 735 var buttonSettings = settings.buttonSettings[mode]; | |
| 1104 | 736 var buttonSet = settings.regionSet; |
| 737 if (settings.processUserRegions) { | |
| 738 var first = buttonSet.slice(0,1); | |
| 739 var rest = buttonSet.slice(1); | |
| 740 buttonSet = first.concat(settings.userRegionSet, rest); | |
| 741 } | |
| 1048 | 742 // set regionSet to [] or '' for no buttons (when showing regions only) |
| 743 if (buttonSet.length && buttonSet.length > 0) { | |
| 744 buttonSettings.regionSet = buttonSet; | |
| 745 buttonSettings.buttonSets.push('regionSet'); | |
| 746 } | |
| 747 }; | |
| 748 | |
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749 // plugin installation called by digilib on plugin object. |
| 813 | 750 var install = function(plugin) { |
| 751 digilib = plugin; | |
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752 console.debug('installing regions plugin. digilib:', digilib); |
| 1048 | 753 // import digilib functions |
| 754 $.extend(fn, digilib.fn); | |
|
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755 // import geometry classes |
| 813 | 756 geom = fn.geometry; |
|
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757 // add defaults, actions, buttons |
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758 $.extend(digilib.defaults, defaults); |
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759 $.extend(digilib.actions, actions); |
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760 $.extend(digilib.buttons, buttons); |
| 1103 | 761 // add "rg" to digilibParamNames |
| 762 digilib.defaults.digilibParamNames.push('rg'); | |
|
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763 }; |
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764 |
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765 // plugin initialization |
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766 var init = function (data) { |
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767 console.debug('initialising regions plugin. data:', data); |
| 835 | 768 var $elem = data.$elem; |
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769 var settings = data.settings; |
| 1102 | 770 CSS = settings.cssPrefix; |
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771 FULL_AREA = geom.rectangle(0, 0, 1, 1); |
| 1048 | 772 // install event handlers |
| 848 | 773 var $data = $(data); |
| 920 | 774 $data.on('setup', handleSetup); |
| 775 $data.on('update', handleUpdate); | |
| 1091 | 776 $data.on('newRegion', handleNewRegion); |
| 777 $data.on('regionClick', handleRegionClick); | |
| 1095 | 778 // default: autoZoom to region, when clicked - DEPRECATED |
| 779 if (settings.autoZoomOnClick && settings.onClickRegion == null) { | |
| 780 settings.onClickRegion = zoomToRegion; | |
| 781 } | |
| 782 // install region buttons if user defined regions are allowed | |
| 1104 | 783 if (digilib.plugins.buttons != null) { |
| 1103 | 784 installButtons(data); |
| 813 | 785 } |
| 792 | 786 }; |
|
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787 |
|
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788 // plugin object with name and install/init methods |
|
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789 // shared objects filled by digilib on registration |
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790 var pluginProperties = { |
| 1048 | 791 name : 'regions', |
|
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792 install : install, |
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793 init : init, |
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794 buttons : {}, |
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795 actions : {}, |
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796 fn : {}, |
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797 plugins : {} |
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798 }; |
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799 |
| 792 | 800 if ($.fn.digilib == null) { |
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801 $.error("jquery.digilib.regions must be loaded after jquery.digilib!"); |
| 792 | 802 } else { |
|
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803 $.fn.digilib('plugin', pluginProperties); |
| 792 | 804 } |
| 805 })(jQuery); |