Mercurial > hg > digilib-old
annotate webapp/src/main/webapp/jquery/jquery.digilib.regions.js @ 1104:415da4e4b76b
adapting button sets
| author | hertzhaft |
|---|---|
| date | Fri, 26 Oct 2012 14:54:11 +0200 |
| parents | d8c380faa347 |
| children | 365f95a14057 |
| 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 being edited? |
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100 'editRegions' : false, |
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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, |
| 1091 | 117 // css selector for area/a elements (must also be marked with class "dl-keep") |
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118 'areaSelector' : 'map.dl-regioncontent area, map.dl-regioncontent a', |
| 1104 | 119 // general buttonset of this plugin |
| 120 'regionSet' : ['regions', 'findcoords', 'finddata', 'lessoptions'], | |
| 121 // buttonset for region editing by user | |
| 122 'userRegionSet' : ['defineregion', 'removeregion', 'removeallregions', 'regioninfo'], | |
| 813 | 123 // url param for regions |
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124 'rg' : null, |
| 1102 | 125 // array with region data |
| 126 'regions' : null, | |
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127 // region attributes to copy from HTML |
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128 'regionAttributes' : { |
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129 'id' :1, |
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130 'href' :1, |
| 1102 | 131 'name' :1, |
| 132 'alt' :1, | |
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133 'target':1, |
| 1102 | 134 'title' :1, |
| 135 'style' :1 | |
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136 } |
| 813 | 137 }; |
| 792 | 138 |
| 139 var actions = { | |
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140 |
| 792 | 141 // define a region interactively with two clicked points |
| 1091 | 142 defineUserRegion : function(data) { |
| 813 | 143 if (!data.settings.isRegionVisible) { |
| 144 alert("Please turn on regions visibility!"); | |
| 145 return; | |
| 146 } | |
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147 var $elem = data.$elem; |
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148 var $body = $('body'); |
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149 var bodyRect = geom.rectangle($body); |
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150 var $scaler = data.$scaler; |
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151 var scalerRect = geom.rectangle($scaler); |
| 792 | 152 var pt1, pt2; |
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153 // overlay prevents other elements from reacting to mouse events |
| 1102 | 154 var $overlay = $('<div class="'+CSS+'overlay" style="position:absolute"/>'); |
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155 $body.append($overlay); |
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156 bodyRect.adjustDiv($overlay); |
| 1102 | 157 var attr = {'class' : CSS+"regionURL"}; |
| 158 var $regionDiv = newRegionDiv(data, attr); | |
| 792 | 159 |
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160 // mousedown handler: start sizing |
| 792 | 161 var regionStart = function (evt) { |
| 162 pt1 = geom.position(evt); | |
| 163 // setup and show zoom div | |
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164 pt1.adjustDiv($regionDiv); |
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165 $regionDiv.width(0).height(0); |
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166 $regionDiv.show(); |
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167 // register mouse events |
| 920 | 168 $overlay.on("mousemove.dlRegion", regionMove); |
| 169 $overlay.on("mouseup.dlRegion", regionEnd); | |
| 792 | 170 return false; |
| 171 }; | |
| 172 | |
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173 // mousemove handler: size region |
| 792 | 174 var regionMove = function (evt) { |
| 175 pt2 = geom.position(evt); | |
| 176 var rect = geom.rectangle(pt1, pt2); | |
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177 rect.clipTo(scalerRect); |
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178 // update region |
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179 rect.adjustDiv($regionDiv); |
| 792 | 180 return false; |
| 181 }; | |
| 182 | |
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183 // mouseup handler: end sizing |
| 792 | 184 var regionEnd = function (evt) { |
| 185 pt2 = geom.position(evt); | |
| 186 // assume a click and continue if the area is too small | |
| 187 var clickRect = geom.rectangle(pt1, pt2); | |
| 188 if (clickRect.getArea() <= 5) return false; | |
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189 // unregister mouse events and get rid of overlay |
| 920 | 190 $overlay.off("mousemove.dlRegion", regionMove); |
| 191 $overlay.off("mouseup.dlRegion", regionEnd); | |
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192 $overlay.remove(); |
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193 // clip region |
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194 clickRect.clipTo(scalerRect); |
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195 clickRect.adjustDiv($regionDiv); |
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196 regionTrafo(data, $regionDiv); |
| 1103 | 197 var count = getRegions(data, 'regionURL').length; |
| 198 addRegionNumber(data, $regionDiv, count); | |
| 1091 | 199 fn.highlightButtons(data, 'defineregion', 0); |
| 813 | 200 redisplay(data); |
| 1095 | 201 $(data).trigger('newRegion', [$regionDiv]); |
| 792 | 202 return false; |
| 203 }; | |
| 204 | |
| 205 // bind start zoom handler | |
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206 $overlay.one('mousedown.dlRegion', regionStart); |
| 1091 | 207 fn.highlightButtons(data, 'defineregion', 1); |
| 792 | 208 }, |
| 209 | |
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210 // remove the last added URL region |
| 1091 | 211 removeUserRegion : function (data) { |
| 813 | 212 if (!data.settings.isRegionVisible) { |
| 213 alert("Please turn on regions visibility!"); | |
| 214 return; | |
| 215 } | |
| 1102 | 216 var selector = 'div.'+CSS+'regionURL'; |
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217 var $regionDiv = data.$elem.find(selector).last(); |
| 792 | 218 $regionDiv.remove(); |
| 813 | 219 redisplay(data); |
| 792 | 220 }, |
| 221 | |
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222 // remove all manually added regions (defined through URL "rg" parameter) |
| 1091 | 223 removeAllUserRegions : function (data) { |
| 1067 | 224 if (!data.settings.isRegionVisible) { |
| 225 alert("Please turn on regions visibility!"); | |
| 226 return; | |
| 227 } | |
| 1102 | 228 var selector = 'div.'+CSS+'regionURL'; |
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229 var $regionDivs = data.$elem.find(selector); |
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230 $regionDivs.remove(); |
| 1067 | 231 redisplay(data); |
| 232 }, | |
| 233 | |
| 813 | 234 // show/hide regions |
| 1060 | 235 toggleRegions : function (data) { |
| 813 | 236 var show = !data.settings.isRegionVisible; |
| 237 data.settings.isRegionVisible = show; | |
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238 fn.highlightButtons(data, 'regions', show); |
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239 renderRegions(data, 1); |
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240 }, |
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241 |
| 1048 | 242 // show region info in a window |
| 1060 | 243 showRegionInfo : function (data) { |
| 1048 | 244 var $elem = data.$elem; |
| 1102 | 245 var infoSelector = '#'+CSS+'regionInfo'; |
| 1098 | 246 if (fn.isOnScreen(data, infoSelector)) return; // already onscreen |
| 1048 | 247 var html = '\ |
| 1102 | 248 <div id="'+CSS+'regionInfo" class="'+CSS+'keep '+CSS+'regionInfo">\ |
| 249 <table class="'+CSS+'infoheader">\ | |
| 1060 | 250 <tr>\ |
| 1102 | 251 <td class="'+CSS+'infobutton html">HTML</td>\ |
| 252 <td class="'+CSS+'infobutton svgattr">SVG</td>\ | |
| 253 <td class="'+CSS+'infobutton csv">CSV</td>\ | |
| 254 <td class="'+CSS+'infobutton digilib">Digilib</td>\ | |
| 255 <td class="'+CSS+'infobutton x">X</td>\ | |
| 1060 | 256 </tr>\ |
| 257 </table>\ | |
| 1048 | 258 </div>'; |
| 259 $info = $(html); | |
| 260 $info.appendTo($elem); | |
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261 var $regions = getRegions(data, 'regionURL'); |
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262 $info.append(regionInfoHTML(data, $regions)); |
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263 $info.append(regionInfoSVG(data, $regions)); |
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264 $info.append(regionInfoCSV(data, $regions)); |
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265 $info.append(regionInfoDigilib(data, $regions)); |
| 1048 | 266 var bind = function(name) { |
| 1060 | 267 $info.find('.'+name).on('click.regioninfo', function () { |
| 1102 | 268 $info.find('div.'+CSS+'info').hide(); |
| 269 $info.find('div.'+CSS+name).show(); | |
| 1060 | 270 fn.centerOnScreen(data, $info); |
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271 }); |
| 1048 | 272 }; |
| 273 bind('html'); | |
| 274 bind('svgattr'); | |
| 1060 | 275 bind('csv'); |
| 1048 | 276 bind('digilib'); |
| 277 $info.find('.x').on('click.regioninfo', function () { | |
| 278 fn.withdraw($info); | |
| 279 }); | |
| 280 $info.fadeIn(); | |
| 1060 | 281 fn.centerOnScreen(data, $info); |
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282 }, |
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283 |
| 1091 | 284 // display region coordinates in an edit line |
| 1095 | 285 showRegionCoords : function (data, $regionDiv) { |
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286 var $elem = data.$elem; |
| 1095 | 287 var rect = $regionDiv.data('rect'); |
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288 var text = $regionDiv.data('text'); |
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289 var coordString = packCoords(rect, ','); |
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290 var html = '\ |
| 1102 | 291 <div id="'+CSS+'regionInfo" class="'+CSS+'keep '+CSS+'regionInfo">\ |
| 1098 | 292 <div>'+text+'</div>\ |
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293 <input name="coords" type="text" size="30" maxlength="40" value="'+coordString+'"/>\ |
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294 </div>'; |
| 1091 | 295 var $info = $(html); |
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296 $info.appendTo($elem); |
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297 $div = $info.find('div'); |
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298 $div.text(text); |
| 1091 | 299 $input = $info.find('input'); |
| 300 $input.on('focus.regioninfo', function (event) { | |
| 301 this.select(); | |
| 302 }); | |
| 303 $input.on('blur.regioninfo', function (event) { | |
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304 fn.withdraw($info); |
| 1091 | 305 return false; |
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306 }); |
| 1091 | 307 $input.on('keypress.regioninfo', function (event) { |
| 1092 | 308 fn.withdraw($info); // OBS: "return false" disables copy! |
| 1091 | 309 }); |
| 310 $input.prop("readonly",true); | |
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311 $info.fadeIn(); |
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312 fn.centerOnScreen(data, $info); |
| 1091 | 313 $input.focus(); |
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314 console.debug('showRegionCoords', coordString); |
| 1092 | 315 }, |
| 1091 | 316 |
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317 // draw a find region from coords and move into view |
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318 regionFromCoords : function (data, coords) { |
| 1095 | 319 var rect = parseCoords(data, coords); |
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320 if (rect == null) { |
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321 alert('invalid coordinates: ' + coords); |
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322 return; |
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323 } |
| 1102 | 324 var attr = { 'class' : CSS+'regionURL '+CSS+'findregion' }; |
| 325 var item = { 'rect' : rect, 'attributes' : attr }; | |
| 326 var $regionDiv = addRegionDiv(data, item); | |
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327 var za = data.zoomArea; |
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328 if (!fn.isFullArea(za)) { |
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329 za.setCenter(rect.getCenter()).stayInside(FULL_AREA); |
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330 if (!za.containsRect(rect)) { |
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331 za = FULL_AREA.copy(); |
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332 } |
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333 fn.setZoomArea(data, za); |
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334 } |
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335 console.debug('regionFromCoords', coords, rect, za); |
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336 redisplay(data); |
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337 }, |
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338 |
| 1092 | 339 // find coordinates and display as new region |
| 340 findCoords : function (data) { | |
| 341 var $elem = data.$elem; | |
| 1102 | 342 var findSelector = '#'+CSS+'regionFindCoords'; |
| 1098 | 343 if (fn.isOnScreen(data, findSelector)) return; // already onscreen |
| 1092 | 344 var html = '\ |
| 1102 | 345 <div id="'+CSS+'regionFindCoords" class="'+CSS+'keep '+CSS+'regionInfo">\ |
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346 <div>coordinates to find:</div>\ |
| 1102 | 347 <form class="'+CSS+'form">\ |
| 1092 | 348 <div>\ |
| 1102 | 349 <input class="'+CSS+'input" name="coords" type="text" size="30" maxlength="40"/> \ |
| 1092 | 350 </div>\ |
| 1102 | 351 <input class="'+CSS+'submit" type="submit" name="sub" value="Ok"/>\ |
| 352 <input class="'+CSS+'cancel" type="button" value="Cancel"/>\ | |
| 1092 | 353 </form>\ |
| 354 </div>'; | |
| 355 var $info = $(html); | |
| 356 $info.appendTo($elem); | |
| 357 var $form = $info.find('form'); | |
| 1102 | 358 var $input = $info.find('input.'+CSS+'input'); |
| 1092 | 359 // handle submit |
| 360 $form.on('submit', function () { | |
| 361 var coords = $input.val(); | |
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362 actions.regionFromCoords(data, coords); |
| 1092 | 363 fn.withdraw($info); |
| 364 return false; | |
| 1102 | 365 }); |
| 1092 | 366 // handle cancel |
| 1102 | 367 $form.find('.'+CSS+'cancel').on('click', function () { |
| 1092 | 368 fn.withdraw($info); |
| 1102 | 369 }); |
| 1092 | 370 $info.fadeIn(); |
| 371 fn.centerOnScreen(data, $info); | |
| 372 $input.focus(); | |
| 1098 | 373 }, |
| 374 | |
| 375 // find text data and display as new region | |
| 376 findData : function (data) { | |
| 377 var $elem = data.$elem; | |
| 1102 | 378 var findSelector = '#'+CSS+'regionFindData'; |
| 1098 | 379 if (fn.isOnScreen(data, findSelector)) return; // already onscreen |
| 380 var textOptions = getTextOptions(data, 'regionHTML'); | |
| 381 var html = '\ | |
| 1102 | 382 <div id="'+CSS+'regionFindData" class="'+CSS+'keep '+CSS+'regionInfo">\ |
| 1098 | 383 <div>text to find:</div>\ |
| 1102 | 384 <form class="'+CSS+'form">\ |
| 1098 | 385 <div>\ |
| 1102 | 386 <select class="'+CSS+'findData">\ |
| 1098 | 387 '+textOptions+'\ |
| 388 </select>\ | |
| 389 </div>\ | |
| 1102 | 390 <input class="'+CSS+'input" name="data" type="text" size="30" maxlength="40"/> \ |
| 391 <input class="'+CSS+'submit" type="submit" name="sub" value="Ok"/>\ | |
| 392 <input class="'+CSS+'cancel" type="button" value="Cancel"/>\ | |
| 1098 | 393 </form>\ |
| 394 </div>'; | |
| 395 var $info = $(html); | |
| 396 $info.appendTo($elem); | |
| 397 var $form = $info.find('form'); | |
| 1102 | 398 var $input = $info.find('input.'+CSS+'input'); |
| 1098 | 399 var $select = $info.find('select'); |
| 400 var findRegion = function () { | |
| 401 var coords = $select.val(); | |
| 402 actions.regionFromCoords(data, coords); | |
| 403 fn.withdraw($info); | |
| 404 return false; | |
| 405 }; | |
| 406 // handle submit | |
| 407 $form.on('submit', findRegion); | |
| 408 $select.on('change', findRegion); | |
| 409 // handle cancel | |
| 1102 | 410 $form.find('.'+CSS+'cancel').on('click', function () { |
| 1098 | 411 fn.withdraw($info); |
| 1102 | 412 }); |
| 1098 | 413 $info.fadeIn(); |
| 414 fn.centerOnScreen(data, $info); | |
| 415 $input.focus(); | |
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416 } |
| 792 | 417 }; |
| 418 | |
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419 // make a coords string |
| 1095 | 420 var packCoords = function (rect, sep) { |
| 1091 | 421 if (sep == null) sep = ','; // comma as default separator |
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422 return [ |
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423 fn.cropFloatStr(rect.x), |
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424 fn.cropFloatStr(rect.y), |
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425 fn.cropFloatStr(rect.width), |
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426 fn.cropFloatStr(rect.height) |
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427 ].join(sep); |
| 813 | 428 }; |
| 429 | |
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430 // create a rectangle from a coords string |
| 1095 | 431 var parseCoords = function (data, coords) { |
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432 var pos = coords.match(/[0-9.]+/g); // TODO: check validity? |
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433 if (pos == null) { |
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434 return null; |
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435 } |
| 1092 | 436 var rect = geom.rectangle(pos[0], pos[1], pos[2], pos[3]); |
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437 if (!fn.isNumber(rect.x) || !fn.isNumber(rect.y)) { |
| 1092 | 438 return null; |
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439 } |
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440 if (!rect.getArea()) { |
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441 var pt = rect.getPosition(); |
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442 rect.width = data.settings.regionWidth; |
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443 rect.height = rect.width; |
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444 rect.setCenter(pt); |
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445 } |
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446 return rect; |
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447 }; |
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448 |
| 1095 | 449 // create a new regionDiv and add it to data.$elem |
| 1102 | 450 var newRegionDiv = function (data, attr) { |
| 451 var cls = CSS+'region'; | |
| 1095 | 452 var $regionDiv = $('<div class="'+cls+'" style="display:none"/>'); |
| 1102 | 453 addRegionAttributes(data, $regionDiv, attr); |
| 1095 | 454 data.$elem.append($regionDiv); |
| 455 return $regionDiv; | |
| 456 }; | |
| 457 | |
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458 // calculate the digilib coordinates of a completed user-defined region |
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459 var regionTrafo = function (data, $regionDiv) { |
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460 var screenRect = geom.rectangle($regionDiv); |
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461 var rect = data.imgTrafo.invtransform(screenRect); |
| 1095 | 462 $regionDiv.data('rect', rect); |
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463 console.debug("regionTrafo", $regionDiv, rect); |
| 1095 | 464 return rect; |
| 465 }; | |
| 466 | |
| 467 // copy attributes to a region div | |
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468 var addRegionAttributes = function (data, $regionDiv, attributes) { |
| 1095 | 469 if (attributes == null) return; |
| 470 if (attributes['class']) { | |
| 471 $regionDiv.addClass(attributes['class']); | |
| 472 delete attributes['class']; | |
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473 } |
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474 if (attributes['href']) { |
| 1102 | 475 $regionDiv.data('href', attributes['href']); |
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476 delete attributes['href']; |
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477 } |
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478 if (attributes['title']) { |
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479 $regionDiv.data('text', attributes['title']); |
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480 } |
| 1095 | 481 $regionDiv.attr(attributes); |
| 482 }; | |
| 483 | |
| 484 // set region number | |
| 485 var addRegionNumber = function (data, $regionDiv, index) { | |
| 1103 | 486 if (!data.settings.showRegionNumbers) return; |
| 487 if (!fn.isNumber(index)) return; | |
| 1102 | 488 var $number = $('<a class="'+CSS+'regionnumber">'+index+'</a>'); |
| 1095 | 489 $regionDiv.append($number); |
| 490 return $regionDiv; | |
| 491 }; | |
| 492 | |
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493 // construct a region from a rectangle |
| 1102 | 494 var addRegionDiv = function (data, item) { |
| 495 var $regionDiv = newRegionDiv(data, item.attributes); | |
| 1095 | 496 var settings = data.settings; |
| 1102 | 497 // add region number |
| 1103 | 498 addRegionNumber(data, $regionDiv, item.index); |
| 1102 | 499 // add inner HTML |
| 500 if (item.inner) { | |
| 501 $regionDiv.append(item.inner); | |
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502 } |
| 1102 | 503 // store the coordinates in data |
| 504 $regionDiv.data('rect', item.rect); | |
| 505 // trigger a region event on click | |
| 1095 | 506 $regionDiv.on('click.dlRegion', function(evt) { |
| 1102 | 507 $(data).trigger('regionClick', [$regionDiv]); |
| 508 }); | |
| 1095 | 509 return $regionDiv; |
| 510 }; | |
| 511 | |
| 1102 | 512 // create regions from a Javascript array of items |
| 513 var createRegionsFromJS = function (data, items) { | |
| 514 $.each(items, function(index, item) { | |
| 515 addRegionDiv(data, item); | |
| 516 }); | |
| 517 }; | |
| 518 | |
| 851 | 519 // create regions from URL parameters |
| 520 var createRegionsFromURL = function (data) { | |
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521 var userRegions = unpackRegions(data); |
| 1102 | 522 if (!userRegions) return; |
| 523 createRegionsFromJS(data, userRegions); | |
| 792 | 524 }; |
| 525 | |
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526 // create regions from HTML |
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527 var createRegionsFromHTML = function (data) { |
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528 // regions are defined in "area" tags |
| 1102 | 529 var $areas = data.$elem.find(data.settings.areaSelector); |
| 530 console.debug("createRegionsFromHTML - elems found: ", $areas.length); | |
| 531 $areas.each(function(index, area) { | |
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532 var $area = $(area); |
| 1102 | 533 // the "title" attribute contains the text for the tooltip |
| 534 var title = $area.attr('title'); | |
| 852 | 535 // the "coords" attribute contains the region coords (0..1) |
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536 var coords = $area.attr('coords'); |
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537 // create the rectangle |
| 1095 | 538 var rect = parseCoords(data, coords); |
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539 if (rect == null) { |
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540 return console.error('bad coords in HTML:', title, coords); |
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541 } |
| 1102 | 542 // mark div class as regionHTML |
| 543 var cls = $area.attr('class') || ''; | |
| 544 cls += ' '+CSS+'regionHTML'; | |
| 545 var attr = {'class' : cls}; | |
| 1095 | 546 // copy attributes |
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547 for (var n in data.settings.regionAttributes) { |
| 1102 | 548 attr[n] = $area.attr(n); |
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549 } |
| 1102 | 550 // copy inner HTML |
| 551 var $inner = $area.contents().clone(); | |
| 552 if (attr.href != null) { | |
| 1025 | 553 // wrap contents in a-tag |
| 1102 | 554 var $a = $('<a href="'+attr.href+'"/>'); |
| 555 $inner = $a.append($inner); | |
| 1025 | 556 } |
| 1102 | 557 var item = {'rect' : rect, 'attributes' : attr, 'inner' : $inner}; |
| 558 var $regionDiv = addRegionDiv(data, item); | |
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559 }); |
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560 }; |
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561 |
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562 // select region divs (HTML or URL) |
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563 var getRegions = function (data, selector) { |
| 1102 | 564 var $regions = data.$elem.find('div.'+CSS+selector); |
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565 return $regions; |
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566 }; |
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567 |
| 1098 | 568 // make text data options html |
| 569 var getTextOptions = function (data, selector) { | |
| 1102 | 570 var createOption = function(item, index) { |
| 1098 | 571 var $item = $(item); |
| 572 var rect = $item.data('rect'); | |
| 573 if (rect == null) | |
| 574 return null; | |
| 575 var coords = packCoords(rect, ','); | |
| 576 var text = $item.data('text'); | |
| 577 return '<option value="'+coords+'">'+text+'</option>'; | |
| 578 }; | |
| 579 var $regions = getRegions(data, selector); | |
| 1102 | 580 var options = $.map($regions, createOption); |
| 1098 | 581 return options.join(''); |
| 582 }; | |
| 583 | |
|
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584 // list of HTML regions matching text in its title attribute |
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585 var matchRegionText = function (data, text) { |
| 1098 | 586 var $regions = getRegions(data, 'regionHTML'); |
|
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587 var re = new RegExp(text); |
|
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588 return $.grep($regions, function($item, index) { |
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589 return re.match($item.data('text')); |
|
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590 }); |
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591 }; |
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592 |
| 1095 | 593 // html for later insertion |
|
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594 var regionInfoHTML = function (data, $regions) { |
| 1102 | 595 var $infoDiv = $('<div class="'+CSS+'info '+CSS+'html"/>'); |
| 596 $infoDiv.append($('<div/>').text('<map class="'+CSS+'keep '+CSS+'regioncontent">')); | |
|
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597 $regions.each(function(index, region) { |
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598 var rect = $(region).data('rect'); |
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599 var coords = packCoords(rect, ','); |
| 1095 | 600 $infoDiv.append($('<div/>').text('<area coords="' + coords + '"/>')); |
| 601 }); | |
| 602 $infoDiv.append($('<div/>').text('</map>')); | |
| 603 return $infoDiv; | |
| 604 }; | |
| 605 | |
| 606 // SVG-style | |
|
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607 var regionInfoSVG = function (data, $regions) { |
| 1102 | 608 var $infoDiv = $('<div class="'+CSS+'info '+CSS+'svgattr"/>'); |
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609 $regions.each(function(index, region) { |
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610 var rect = $(region).data('rect'); |
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611 var coords = packCoords(rect, ','); |
| 1095 | 612 $infoDiv.append($('<div/>').text('"' + coords + '"')); |
| 613 }); | |
| 614 return $infoDiv; | |
| 615 }; | |
| 616 | |
| 617 // CSV-style | |
|
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618 var regionInfoCSV = function (data, $regions) { |
| 1102 | 619 var $infoDiv = $('<div class="'+CSS+'info '+CSS+'csv"/>'); |
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620 $regions.each(function(index, region) { |
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621 var rect = $(region).data('rect'); |
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622 var coords = packCoords(rect, ','); |
| 1095 | 623 $infoDiv.append($('<div/>').text(index+1 + ": " + coords)); |
| 624 }); | |
| 625 return $infoDiv; | |
| 626 }; | |
| 627 | |
| 628 // digilib-style (h,w@x,y) | |
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629 var regionInfoDigilib = function (data, $regions) { |
| 1102 | 630 var $infoDiv = $('<div class="'+CSS+'info '+CSS+'digilib"/>'); |
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631 $regions.each(function(index, region) { |
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632 var rect = $(region).data('rect'); |
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633 var coords = packCoords(rect, ','); |
| 1095 | 634 $infoDiv.append($('<div/>').text(coords)); |
| 635 }); | |
| 636 return $infoDiv; | |
| 637 }; | |
| 638 | |
| 813 | 639 // show a region on top of the scaler image |
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640 var renderRegion = function (data, $regionDiv, anim) { |
| 813 | 641 if (!data.imgTrafo) return; |
|
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642 var zoomArea = data.zoomArea; |
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643 var rect = $regionDiv.data('rect').copy(); |
| 813 | 644 var show = data.settings.isRegionVisible; |
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645 if (show && zoomArea.overlapsRect(rect) && !rect.containsRect(zoomArea)) { |
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646 rect.clipTo(zoomArea); |
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647 var screenRect = data.imgTrafo.transform(rect); |
| 1067 | 648 // console.debug("renderRegion: pos=",geom.position(screenRect)); |
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649 if (anim) { |
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650 $regionDiv.fadeIn(); |
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651 } else{ |
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652 $regionDiv.show(); |
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653 } |
| 1024 | 654 // adjustDiv sets wrong coords when called BEFORE show() |
| 851 | 655 screenRect.adjustDiv($regionDiv); |
| 813 | 656 } else { |
|
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657 if (anim) { |
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658 $regionDiv.fadeOut(); |
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659 } else{ |
| 824 | 660 $regionDiv.hide(); |
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661 } |
| 813 | 662 } |
| 663 }; | |
| 664 | |
| 665 // show regions | |
|
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666 var renderRegions = function (data, anim) { |
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667 var render = function(index, region) { |
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668 renderRegion(data, $(region), anim); |
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669 }; |
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670 var $regions = getRegions(data, 'region') |
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671 $regions.each(render); |
| 813 | 672 }; |
| 673 | |
| 1091 | 674 // read region data from URL parameters |
| 813 | 675 var unpackRegions = function (data) { |
| 676 var rg = data.settings.rg; | |
| 1095 | 677 if (rg == null) return []; |
| 678 var coords = rg.split(","); | |
| 1098 | 679 var regions = $.map(coords, function(coord, index) { |
| 1095 | 680 var pos = coord.split("/", 4); |
| 813 | 681 var rect = geom.rectangle(pos[0], pos[1], pos[2], pos[3]); |
| 1102 | 682 var attr = {'class' : CSS+"regionURL"}; |
| 683 var item = {'rect' : rect, 'index' : index+1, 'attributes' : attr}; | |
| 684 return item; | |
| 1095 | 685 }); |
| 686 return regions; | |
| 792 | 687 }; |
| 688 | |
| 1091 | 689 // pack user regions array into a URL parameter string |
| 813 | 690 var packRegions = function (data) { |
| 1102 | 691 var $regions = getRegions(data, 'regionURL'); |
| 1103 | 692 if ($regions.length == 0 || !data.settings.processUserRegions) { |
| 815 | 693 data.settings.rg = null; |
| 694 return; | |
| 695 } | |
| 1102 | 696 var pack = function(region, index) { |
| 1099 | 697 var $region = $(region); |
| 698 var rect = $region.data('rect'); | |
| 1102 | 699 var packed = packCoords(rect, '/'); |
| 700 return packed; | |
| 1099 | 701 }; |
| 1102 | 702 var coords = $.map($regions, pack); |
| 1095 | 703 var rg = coords.join(','); |
| 813 | 704 data.settings.rg = rg; |
|
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705 console.debug('pack regions:', rg); |
| 792 | 706 }; |
| 707 | |
| 1095 | 708 // zoom to the region coordinates |
| 709 var zoomToRegion = function (data, region) { | |
| 710 digilib.actions.zoomArea(data, region); | |
| 711 }; | |
| 712 | |
|
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|
713 // reload display after a region has been added or removed |
| 813 | 714 var redisplay = function (data) { |
| 1103 | 715 packRegions(data); |
| 813 | 716 fn.redisplay(data); |
|
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717 }; |
| 813 | 718 |
| 1091 | 719 // event handler, gets called when a newRegion event is triggered |
| 1095 | 720 var handleNewRegion = function (evt, $regionDiv) { |
| 1091 | 721 var data = this; |
| 722 var settings = data.settings; | |
| 1095 | 723 console.debug("regions: handleNewRegion", $regionDiv); |
| 1091 | 724 if (typeof settings.onNewRegion === 'function') { |
| 725 // execute callback | |
| 1095 | 726 return settings.onNewRegion(data, $regionDiv); |
| 1091 | 727 } |
| 728 if (typeof settings.onNewRegion === 'string') { | |
| 729 // execute action | |
| 1095 | 730 return actions[settings.onNewRegion](data, $regionDiv); |
| 1091 | 731 } |
| 732 }; | |
| 733 | |
| 734 // event handler, gets called when a regionClick event is triggered | |
| 1095 | 735 var handleRegionClick = function (evt, $regionDiv) { |
| 1091 | 736 var data = this; |
| 737 var settings = data.settings; | |
| 1095 | 738 console.debug("regions: handleRegionClick", $regionDiv); |
| 739 if ($regionDiv.data('href')) { | |
| 1091 | 740 // follow the href attribute of the region area |
| 1095 | 741 window.location = $regionDiv.data('href'); //TODO: how about target? |
| 1091 | 742 } |
| 743 if (typeof settings.onClickRegion === 'function') { | |
| 744 // execute callback | |
| 1095 | 745 return settings.onClickRegion(data, $regionDiv); |
| 1091 | 746 } |
| 747 if (typeof settings.onClickRegion === 'string') { | |
| 748 // execute action | |
| 1095 | 749 return actions[settings.onClickRegion](data, $regionDiv); |
| 1091 | 750 } |
| 751 }; | |
| 752 | |
|
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753 // event handler, reads region parameter and creates region divs |
|
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754 var handleSetup = function (evt) { |
| 941 | 755 var data = this; |
|
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756 var settings = data.settings; |
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757 console.debug("regions: handleSetup", settings.rg); |
| 1102 | 758 // regions with content are given in a Javascript array |
| 759 if (settings.regions) { | |
| 760 createRegionsFromJS(data, settings.regions); | |
| 761 } | |
| 1048 | 762 // regions with content are given in HTML divs |
|
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763 if (settings.processHtmlRegions) { |
|
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764 createRegionsFromHTML(data); |
|
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765 } |
| 1048 | 766 // regions are defined in the URL |
|
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767 if (settings.processUserRegions) { |
| 851 | 768 createRegionsFromURL(data); |
|
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769 } |
|
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770 }; |
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771 |
| 851 | 772 // event handler, sets buttons and shows regions when scaler img is reloaded |
|
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773 var handleUpdate = function (evt) { |
| 941 | 774 var data = this; |
|
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775 console.debug("regions: handleUpdate"); |
| 848 | 776 var settings = data.settings; |
| 777 fn.highlightButtons(data, 'regions' , settings.isRegionVisible); | |
|
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778 renderRegions(data); |
|
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779 }; |
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|
780 |
| 1048 | 781 // additional buttons |
| 782 var installButtons = function (data) { | |
| 783 var settings = data.settings; | |
| 784 var mode = settings.interactionMode; | |
| 785 var buttonSettings = settings.buttonSettings[mode]; | |
| 1104 | 786 var buttonSet = settings.regionSet; |
| 787 if (settings.processUserRegions) { | |
| 788 var first = buttonSet.slice(0,1); | |
| 789 var rest = buttonSet.slice(1); | |
| 790 buttonSet = first.concat(settings.userRegionSet, rest); | |
| 791 } | |
| 1048 | 792 // set regionSet to [] or '' for no buttons (when showing regions only) |
| 793 if (buttonSet.length && buttonSet.length > 0) { | |
| 794 buttonSettings.regionSet = buttonSet; | |
| 795 buttonSettings.buttonSets.push('regionSet'); | |
| 796 } | |
| 797 }; | |
| 798 | |
|
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799 // plugin installation called by digilib on plugin object. |
| 813 | 800 var install = function(plugin) { |
| 801 digilib = plugin; | |
|
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802 console.debug('installing regions plugin. digilib:', digilib); |
| 1048 | 803 // import digilib functions |
| 804 $.extend(fn, digilib.fn); | |
|
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805 // import geometry classes |
| 813 | 806 geom = fn.geometry; |
|
808
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|
807 // add defaults, actions, buttons |
|
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808 $.extend(digilib.defaults, defaults); |
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809 $.extend(digilib.actions, actions); |
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|
810 $.extend(digilib.buttons, buttons); |
| 1103 | 811 // add "rg" to digilibParamNames |
| 812 digilib.defaults.digilibParamNames.push('rg'); | |
|
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813 }; |
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814 |
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|
815 // plugin initialization |
|
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816 var init = function (data) { |
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817 console.debug('initialising regions plugin. data:', data); |
| 835 | 818 var $elem = data.$elem; |
|
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819 var settings = data.settings; |
| 1102 | 820 CSS = settings.cssPrefix; |
|
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821 FULL_AREA = geom.rectangle(0, 0, 1, 1); |
| 1048 | 822 // install event handlers |
| 848 | 823 var $data = $(data); |
| 920 | 824 $data.on('setup', handleSetup); |
| 825 $data.on('update', handleUpdate); | |
| 1091 | 826 $data.on('newRegion', handleNewRegion); |
| 827 $data.on('regionClick', handleRegionClick); | |
| 1095 | 828 // default: autoZoom to region, when clicked - DEPRECATED |
| 829 if (settings.autoZoomOnClick && settings.onClickRegion == null) { | |
| 830 settings.onClickRegion = zoomToRegion; | |
| 831 } | |
| 832 // install region buttons if user defined regions are allowed | |
| 1104 | 833 if (digilib.plugins.buttons != null) { |
| 1103 | 834 installButtons(data); |
| 813 | 835 } |
| 792 | 836 }; |
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837 |
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838 // plugin object with name and install/init methods |
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839 // shared objects filled by digilib on registration |
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840 var pluginProperties = { |
| 1048 | 841 name : 'regions', |
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842 install : install, |
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843 init : init, |
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844 buttons : {}, |
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845 actions : {}, |
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846 fn : {}, |
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847 plugins : {} |
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848 }; |
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849 |
| 792 | 850 if ($.fn.digilib == null) { |
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851 $.error("jquery.digilib.regions must be loaded after jquery.digilib!"); |
| 792 | 852 } else { |
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853 $.fn.digilib('plugin', pluginProperties); |
| 792 | 854 } |
| 855 })(jQuery); |