| 1 | 1 | simandl | <?php |
| 2 | | | // Copyright Howard Jones, 2005 howie@thingy.com |
| 3 | | | // http://wotsit.thingy.com/haj/cacti/ |
| 4 | | | // Released under the GNU Public License |
| 5 | | | |
| 6 | | | // A simple port of the guts of Apache's mod_imap |
| 7 | | | // - if you have an image control in a form, it's not really defined what happens to USEMAP |
| 8 | | | // attributes. They are allowed in HTML 4.0 and XHTML, but some testing shows that they're |
| 9 | | | // basically ignored. So you need to use server-side imagemaps if you want to have a form |
| 10 | | | // where you are choosing a verb from (for example) a <SELECT> and also specifying part of |
| 11 | | | // an image with an IMAGE control. |
| 12 | | | // |
| 13 | | | // |
| 14 | | | class HTML_ImageMap_Area |
| 15 | | | { |
| 16 | | | var $href; |
| 17 | | | var $name; |
| 18 | | | var $id; |
| 19 | | | var $alt; |
| 20 | 85 | simandl | var $z; |
| 21 | 1 | simandl | var $extrahtml; |
| 22 | | | |
| 23 | | | function common_html() |
| 24 | | | { |
| 25 | | | $h = ""; |
| 26 | | | if($this->name != "") |
| 27 | | | { |
| 28 | 85 | simandl | // $h .= " alt=\"".$this->name."\" "; |
| 29 | 1 | simandl | $h .= " id=\"".$this->name."\" "; |
| 30 | | | } |
| 31 | | | if($this->href != "") |
| 32 | | | { |
| 33 | | | $h .= " href=\"".$this->href."\" "; |
| 34 | | | } |
| 35 | 85 | simandl | else { $h .= " nohref "; } |
| 36 | 1 | simandl | if($this->extrahtml != "") |
| 37 | | | { |
| 38 | | | $h .= " ".$this->extrahtml." "; |
| 39 | | | } |
| 40 | | | return $h; |
| 41 | | | } |
| 42 | | | |
| 43 | | | } |
| 44 | | | |
| 45 | | | class HTML_ImageMap_Area_Polygon extends HTML_ImageMap_Area |
| 46 | | | { |
| 47 | | | var $points = array(); |
| 48 | | | var $minx,$maxx,$miny,$maxy; // bounding box |
| 49 | | | var $npoints; |
| 50 | | | |
| 51 | | | function asHTML() |
| 52 | | | { |
| 53 | | | foreach ($this->points as $point) |
| 54 | | | { |
| 55 | | | $flatpoints[] = $point[0]; |
| 56 | | | $flatpoints[] = $point[1]; |
| 57 | | | } |
| 58 | | | $coordstring = join(",",$flatpoints); |
| 59 | | | |
| 60 | | | return '<area'.$this->common_html().' shape="poly" coords="'.$coordstring.'" />'; |
| 61 | | | } |
| 62 | | | |
| 63 | | | function asJSON() |
| 64 | | | { |
| 65 | 85 | simandl | $json = "{ \"shape\":'poly', \"npoints\":".$this->npoints.", \"name\":'".$this->name."',"; |
| 66 | 1 | simandl | |
| 67 | | | $xlist = ''; |
| 68 | | | $ylist = ''; |
| 69 | | | foreach ($this->points as $point) |
| 70 | | | { |
| 71 | | | $xlist .= $point[0].","; |
| 72 | | | $ylist .= $point[1].","; |
| 73 | | | } |
| 74 | | | $xlist = rtrim($xlist,", "); |
| 75 | | | $ylist = rtrim($ylist,", "); |
| 76 | 85 | simandl | $json .= " \"x\": [ $xlist ], \"y\":[ $ylist ], \"minx\": ".$this->minx.", \"miny\": ".$this->miny.", \"maxx\":".$this->maxx.", \"maxy\":".$this->maxy."}"; |
| 77 | 1 | simandl | |
| 78 | | | return($json); |
| 79 | | | } |
| 80 | | | |
| 81 | | | function hitTest($x,$y) |
| 82 | | | { |
| 83 | | | $c = 0; |
| 84 | | | // do the easy bounding-box test first. |
| 85 | | | if( ($x < $this->minx) || ($x>$this->maxx) || ($y<$this->miny) || ($y>$this->maxy)) |
| 86 | | | { |
| 87 | | | return false; |
| 88 | | | } |
| 89 | | | |
| 90 | | | // Algotithm from from |
| 91 | | | // http://www.ecse.rpi.edu/Homepages/wrf/Research/Short_Notes/pnpoly.html#The%20C%20Code |
| 92 | | | for ($i = 0, $j = $this->npoints-1; $i < $this->npoints; $j = $i++) |
| 93 | | | { |
| 94 | | | // print "Checking: $i, $j\n"; |
| 95 | | | $x1 = $this->points[$i][0]; |
| 96 | | | $y1 = $this->points[$i][1]; |
| 97 | | | $x2 = $this->points[$j][0]; |
| 98 | | | $y2 = $this->points[$j][1]; |
| 99 | | | |
| 100 | | | // print "($x,$y) vs ($x1,$y1)-($x2,$y2)\n"; |
| 101 | | | |
| 102 | | | if (((($y1<=$y) && ($y<$y2)) || (($y2<=$y) && ($y<$y1))) && |
| 103 | | | ($x < ($x2 - $x1) * ($y - $y1) / ($y2 - $y1) + $x1)) |
| 104 | | | { |
| 105 | | | $c = !$c; |
| 106 | | | } |
| 107 | | | } |
| 108 | | | |
| 109 | | | return ($c); |
| 110 | | | } |
| 111 | | | |
| 112 | | | function HTML_ImageMap_Area_Polygon ( $name="", $href="",$coords) |
| 113 | | | { |
| 114 | | | $c = $coords[0]; |
| 115 | | | |
| 116 | | | $this->name = $name; |
| 117 | | | $this->href= $href; |
| 118 | | | $this->npoints = count($c)/2; |
| 119 | | | |
| 120 | | | if( intval($this->npoints) != ($this->npoints)) |
| 121 | | | { |
| 122 | | | die("Odd number of points!"); |
| 123 | | | } |
| 124 | | | |
| 125 | | | for ($i=0; $i<count($c); $i+=2) |
| 126 | | | { |
| 127 | 85 | simandl | $x = round($c[$i]); |
| 128 | | | $y = round($c[$i+1]); |
| 129 | 1 | simandl | $point = array($x,$y); |
| 130 | | | $xlist[] = $x; // these two are used to get the bounding box in a moment |
| 131 | | | $ylist[] = $y; |
| 132 | | | $this->points[] = $point; |
| 133 | | | } |
| 134 | | | |
| 135 | | | $this->minx = min($xlist); |
| 136 | | | $this->maxx = max($xlist); |
| 137 | | | $this->miny = min($ylist); |
| 138 | | | $this->maxy = max($ylist); |
| 139 | | | |
| 140 | | | // print $this->asHTML()."\n"; |
| 141 | | | } |
| 142 | | | |
| 143 | | | } |
| 144 | | | |
| 145 | | | class HTML_ImageMap_Area_Rectangle extends HTML_ImageMap_Area |
| 146 | | | { |
| 147 | | | var $x1,$x2,$y1,$y2; |
| 148 | | | |
| 149 | | | function HTML_ImageMap_Area_Rectangle ( $name="", $href="",$coords) |
| 150 | | | { |
| 151 | | | |
| 152 | | | $c = $coords[0]; |
| 153 | | | |
| 154 | 85 | simandl | $x1 = round($c[0]); |
| 155 | | | $y1 = round($c[1]); |
| 156 | | | $x2 = round($c[2]); |
| 157 | | | $y2 = round($c[3]); |
| 158 | 1 | simandl | |
| 159 | | | // sort the points, so that the first is the top-left |
| 160 | | | if($x1>$x2) |
| 161 | | | { |
| 162 | | | $this->x1=$x2; |
| 163 | | | $this->x2=$x1; |
| 164 | | | } |
| 165 | | | else |
| 166 | | | { |
| 167 | | | $this->x1=$x1; |
| 168 | | | $this->x2=$x2; |
| 169 | | | } |
| 170 | | | |
| 171 | | | if($y1>$y2) |
| 172 | | | { |
| 173 | | | $this->y1=$y2; |
| 174 | | | $this->y2=$y1; |
| 175 | | | } |
| 176 | | | else |
| 177 | | | { |
| 178 | | | $this->y1=$y1; |
| 179 | | | $this->y2=$y2; |
| 180 | | | } |
| 181 | | | |
| 182 | | | $this->name = $name; |
| 183 | | | $this->href = $href; |
| 184 | | | } |
| 185 | | | |
| 186 | | | function hitTest($x,$y) |
| 187 | | | { |
| 188 | | | return ( ($x > $this->x1) && ($x < $this->x2) && ($y > $this->y1) && ($y < $this->y2) ); |
| 189 | | | } |
| 190 | | | |
| 191 | | | function asHTML() |
| 192 | | | { |
| 193 | | | $coordstring = join(",",array($this->x1,$this->y1,$this->x2,$this->y2)); |
| 194 | | | return '<area'.$this->common_html().' shape="rect" coords="'.$coordstring.'" />'; |
| 195 | | | |
| 196 | | | } |
| 197 | | | |
| 198 | | | function asJSON() |
| 199 | | | { |
| 200 | 85 | simandl | $json = "{ \"shape\":'rect', "; |
| 201 | 1 | simandl | |
| 202 | 85 | simandl | $json .= " \"x1\":".$this->x1.", \"y1\":".$this->y1.", \"x2\":".$this->x2.", \"y2\":".$this->y2.", \"name\":'".$this->name."'}"; |
| 203 | 1 | simandl | |
| 204 | | | return($json); |
| 205 | | | } |
| 206 | | | |
| 207 | | | } |
| 208 | | | |
| 209 | | | class HTML_ImageMap_Area_Circle extends HTML_ImageMap_Area |
| 210 | | | { |
| 211 | | | var $centx,$centy, $edgex, $edgey; |
| 212 | | | |
| 213 | | | function asHTML() |
| 214 | | | { |
| 215 | | | $coordstring = join(",",array($this->centx,$this->centy,$this->edgex,$this->edgey) ); |
| 216 | | | return '<area'.$this->common_html().' shape="circle" coords="'.$coordstring.'" />'; |
| 217 | | | } |
| 218 | | | |
| 219 | | | function hitTest($x,$y) |
| 220 | | | { |
| 221 | | | $radius1 = ($this->edgey - $this->centy) * ($this->edgey - $this->centy) |
| 222 | | | + ($this->edgex - $this->centx) * ($this->edgex - $this->centx); |
| 223 | | | |
| 224 | | | $radius2 = ($this->edgey - $y) * ($this->edgey - $y) |
| 225 | | | + ($this->edgex - $x) * ($this->edgex - $x); |
| 226 | | | |
| 227 | | | return ($radius2 <= $radius1); |
| 228 | | | } |
| 229 | | | |
| 230 | | | function HTML_ImageMap_Area_Circle($name="", $href="",$coords) |
| 231 | | | { |
| 232 | | | $c = $coords[0]; |
| 233 | | | |
| 234 | | | $this->name = $name; |
| 235 | | | $this->href = $href; |
| 236 | 85 | simandl | $this->centx = round($c[0]); |
| 237 | | | $this->centy = round($c[1]); |
| 238 | | | $this->edgex = round($c[2]); |
| 239 | | | $this->edgey = round($c[3]); |
| 240 | 1 | simandl | } |
| 241 | | | } |
| 242 | | | |
| 243 | | | class HTML_ImageMap |
| 244 | | | { |
| 245 | | | var $shapes; |
| 246 | | | var $nshapes; |
| 247 | | | var $name; |
| 248 | | | |
| 249 | | | function HTML_ImageMap($name="") |
| 250 | | | { |
| 251 | | | $this->Reset(); |
| 252 | | | $this->name = $name; |
| 253 | | | } |
| 254 | | | |
| 255 | | | function Reset() |
| 256 | | | { |
| 257 | | | $this->shapes = array(); |
| 258 | | | $this->nshapes = 0; |
| 259 | | | $this->name = ""; |
| 260 | | | } |
| 261 | | | |
| 262 | | | // add an element to the map - takes an array with the info, in a similar way to HTML_QuickForm |
| 263 | | | function addArea($element) |
| 264 | | | { |
| 265 | | | if (is_object($element) && is_subclass_of($element, 'html_imagemap_area')) { |
| 266 | | | $elementObject = &$element; |
| 267 | | | } else { |
| 268 | | | $args = func_get_args(); |
| 269 | | | $className = "HTML_ImageMap_Area_".$element; |
| 270 | 85 | simandl | $elementObject = new $className($args[1],$args[2],array_slice($args, 3)); |
| 271 | 1 | simandl | } |
| 272 | | | |
| 273 | | | $this->shapes[] =& $elementObject; |
| 274 | | | $this->nshapes++; |
| 275 | | | // print $this->nshapes." shapes\n"; |
| 276 | | | } |
| 277 | | | |
| 278 | | | // do a hit-test based on the current map |
| 279 | | | // - can be limited to only match elements whose names match the filter |
| 280 | | | // (e.g. pick a building, in a campus map) |
| 281 | | | function hitTest($x,$y,$namefilter="") |
| 282 | | | { |
| 283 | | | $preg = '/'.$namefilter.'/'; |
| 284 | | | foreach ($this->shapes as $shape) |
| 285 | | | { |
| 286 | | | if($shape->hitTest($x,$y)) |
| 287 | | | { |
| 288 | | | if( ($namefilter == "") || ( preg_match($preg,$shape->name) ) ) |
| 289 | | | { |
| 290 | | | return $shape->name; |
| 291 | | | } |
| 292 | | | } |
| 293 | | | } |
| 294 | | | return false; |
| 295 | | | } |
| 296 | | | |
| 297 | | | // update a property on all elements in the map that match a name |
| 298 | | | // (use it for retro-actively adding in link information to a pre-built geometry before generating HTML) |
| 299 | | | // returns the number of elements that were matched/changed |
| 300 | | | function setProp($which, $what, $where) |
| 301 | | | { |
| 302 | | | $count = 0; |
| 303 | | | for($i=0; $i<count($this->shapes); $i++) |
| 304 | | | { |
| 305 | | | // this USED to be a substring match, but that broke some things |
| 306 | | | // and wasn't actually used as one anywhere. |
| 307 | | | if( ($where == "") || ( $this->shapes[$i]->name==$where) ) |
| 308 | | | { |
| 309 | | | switch($which) |
| 310 | | | { |
| 311 | | | case 'href': |
| 312 | | | $this->shapes[$i]->href= $what; |
| 313 | | | break; |
| 314 | | | case 'extrahtml': |
| 315 | | | $this->shapes[$i]->extrahtml= $what; |
| 316 | 85 | simandl | #print "IMAGEMAP: Found $where and adding $which\n"; |
| 317 | 1 | simandl | break; |
| 318 | | | } |
| 319 | | | $count++; |
| 320 | | | } |
| 321 | | | } |
| 322 | | | return $count; |
| 323 | | | } |
| 324 | | | |
| 325 | 85 | simandl | // update a property on all elements in the map that match a name as a substring |
| 326 | | | // (use it for retro-actively adding in link information to a pre-built geometry before generating HTML) |
| 327 | | | // returns the number of elements that were matched/changed |
| 328 | | | function setPropSub($which, $what, $where) |
| 329 | | | { |
| 330 | | | |
| 331 | | | $count = 0; |
| 332 | | | for($i=0; $i<count($this->shapes); $i++) |
| 333 | | | { |
| 334 | | | if( ($where == "") || ( strstr($this->shapes[$i]->name,$where)!=FALSE ) ) |
| 335 | | | { |
| 336 | | | switch($which) |
| 337 | | | { |
| 338 | | | case 'href': |
| 339 | | | $this->shapes[$i]->href= $what; |
| 340 | | | break; |
| 341 | | | case 'extrahtml': |
| 342 | | | $this->shapes[$i]->extrahtml= $what; |
| 343 | | | break; |
| 344 | | | } |
| 345 | | | $count++; |
| 346 | | | } |
| 347 | | | } |
| 348 | | | return $count; |
| 349 | | | } |
| 350 | | | |
| 351 | 1 | simandl | // Return the imagemap as an HTML client-side imagemap for inclusion in a page |
| 352 | | | function asHTML() |
| 353 | | | { |
| 354 | | | $html = '<map'; |
| 355 | | | if($this->name != "") |
| 356 | | | { |
| 357 | | | $html .= ' name="'.$this->name.'"'; |
| 358 | | | } |
| 359 | | | $html .=">\n"; |
| 360 | | | foreach ($this->shapes as $shape) |
| 361 | | | { |
| 362 | 85 | simandl | $html .= $shape->asHTML()."\n"; |
| 363 | 1 | simandl | $html .= "\n"; |
| 364 | | | } |
| 365 | | | $html .= "</map>\n"; |
| 366 | | | |
| 367 | | | return $html; |
| 368 | | | } |
| 369 | | | |
| 370 | | | function subJSON($namefilter="",$reverseorder=false) |
| 371 | | | { |
| 372 | | | $json = ''; |
| 373 | | | |
| 374 | | | $preg = '/'.$namefilter.'/'; |
| 375 | | | foreach ($this->shapes as $shape) |
| 376 | | | { |
| 377 | | | if( ($namefilter == "") || ( preg_match($preg,$shape->name) )) |
| 378 | | | { |
| 379 | | | if($reverseorder) |
| 380 | | | { |
| 381 | | | $json = $shape->asJSON().",\n".$json; |
| 382 | | | } |
| 383 | | | else |
| 384 | | | { |
| 385 | | | $json .= $shape->asJSON().",\n"; |
| 386 | | | } |
| 387 | | | } |
| 388 | | | } |
| 389 | | | $json = rtrim($json,"\n, "); |
| 390 | | | $json .= "\n"; |
| 391 | | | |
| 392 | | | return $json; |
| 393 | | | } |
| 394 | | | |
| 395 | | | // return HTML for a subset of the map, specified by the filter string |
| 396 | | | // (suppose you want some partof your UI to have precedence over another part |
| 397 | | | // - the imagemap is checked from top-to-bottom in the HTML) |
| 398 | 85 | simandl | // - skipnolinks -> in normal HTML output, we don't need areas for things with no href |
| 399 | | | function subHTML($namefilter="",$reverseorder=false, $skipnolinks=false) |
| 400 | 1 | simandl | { |
| 401 | | | $html = ""; |
| 402 | | | $preg = '/'.$namefilter.'/'; |
| 403 | 85 | simandl | |
| 404 | 1 | simandl | foreach ($this->shapes as $shape) |
| 405 | | | { |
| 406 | 85 | simandl | # if( ($namefilter == "") || ( preg_match($preg,$shape->name) )) |
| 407 | | | if( ($namefilter == "") || ( strstr($shape->name, $namefilter) !== FALSE )) |
| 408 | 1 | simandl | { |
| 409 | 85 | simandl | if(!$skipnolinks || $shape->href != "" || $shape->extrahtml != "" ) |
| 410 | 1 | simandl | { |
| 411 | 85 | simandl | if($reverseorder) |
| 412 | | | { |
| 413 | | | $html = $shape->asHTML()."\n".$html; |
| 414 | | | } |
| 415 | | | else |
| 416 | | | { |
| 417 | | | $html .= $shape->asHTML()."\n"; |
| 418 | | | } |
| 419 | 1 | simandl | } |
| 420 | | | |
| 421 | | | } |
| 422 | | | } |
| 423 | | | return $html; |
| 424 | | | } |
| 425 | | | |
| 426 | | | } |
| 427 | | | // vim:ts=4:sw=4: |
| 428 | | | ?> |
