function DownloadMarkup()
{
$resourceService = $this->site->CreateService(MgServiceType::ResourceService);
$featureService = $this->site->CreateService(MgServiceType::FeatureService);
$markupLayerResId = new MgResourceIdentifier($this->args['MARKUPLAYER']);
$markupFsId = new MgResourceIdentifier($this->GetResourceIdPrefix() . $markupLayerResId->GetName() . '.FeatureSource');
$extension = $this->GetFileExtension($markupLayerResId->ToString());
if (strcmp($extension, ".zip") == 0) {
$dataList = $resourceService->EnumerateResourceData($markupFsId);
$doc = DOMDocument::LoadXML($dataList->ToString());
$dataItems = $doc->getElementsByTagName("Name");
$tmpFiles = array();
//Copy out all data files to a temp location
for ($i = 0; $i < $dataItems->length; $i++) {
$dataName = $dataItems->item($i)->nodeValue;
$byteReader = $resourceService->GetResourceData($markupFsId, $dataName);
//Sink to temp file
$tmpSink = new MgByteSink($byteReader);
$fileName = tempnam(sys_get_temp_dir(), $dataName);
$tmpSink->ToFile($fileName);
$tmpFiles[$dataName] = $fileName;
}
//Zip them up.
$zipName = $markupLayerResId->GetName() . $extension;
$zipPath = tempnam(sys_get_temp_dir(), $zipName);
$zip = new ZipArchive();
$zip->open($zipPath, ZIPARCHIVE::CREATE);
foreach ($tmpFiles as $dataName => $filePath) {
$dataNorm = strtolower($dataName);
//HACK: There must be some defect in MgFeatureService::CreateFeatureSource() for SHP
//files or the FDO provider, because even if we plug in a coord sys WKT when we create
//it, we get a blank prj file (both Windows/Linux). Re-uploading this same zip file back into
//the widget causes problems in Linux (markup features not rendered) because of the blank prj.
//
//So that's the problem. Here's the workaround: If we find a blank prj file as we're assembling
//the zip file for download, pump our current Map's WKT into the prj file before packaging it up
//
//That's what we were already doing when we called MgFeatureService::CreateFeatureSource(), but it
//or the provider didn't like it.
if (substr($dataNorm, strlen($dataNorm) - strlen("prj")) == "prj") {
$content = file_get_contents($filePath);
if (strlen($content) == 0) {
$map = new MgMap();
$map->Open($resourceService, $this->args['MAPNAME']);
$content = $map->GetMapSRS();
file_put_contents($filePath, $content);
}
}
$zip->addFile($filePath, $dataName);
}
$zip->close();
//Serve it up for download
$bs = new MgByteSource($zipPath);
$br = $bs->GetReader();
$len = $br->GetLength();
$outputBuffer = '';
$buffer = '';
while ($br->Read($buffer, 50000) != 0) {
$outputBuffer .= $buffer;
}
header("Content-Type: application/octet-stream");
header("Content-Disposition: attachment; filename={$zipName}");
header("Content-Length: " . strlen($outputBuffer));
echo $outputBuffer;
//Let's be nice and clean up after ourselves
unlink($zipPath);
foreach ($tmpFiles as $dataName => $filePath) {
unlink($filePath);
}
} else {
//Single file, make things easier!
$dataName = $markupLayerResId->GetName() . $extension;
$byteReader = $resourceService->GetResourceData($markupFsId, $dataName);
$len = $byteReader->GetLength();
$outputBuffer = '';
$buffer = '';
while ($byteReader->Read($buffer, 50000) != 0) {
$outputBuffer .= $buffer;
}
header("Content-Type: " . $byteReader->GetMimeType());
header("Content-Disposition: attachment; filename={$dataName}");
header("Content-Length: " . strlen($outputBuffer));
echo $outputBuffer;
}
}
function ProcessLayersForLegend($mappingService, $resourceService, $map, $scale, $group, $image)
{
global $iconWidth, $iconHeight, $height, $fontIndex, $iconFormat, $offsetX, $offsetY, $font, $fontSizePt, $xPad, $yPad, $xIndent, $themeIcon, $groupIcon, $dwfIcon, $rasterIcon, $textColor;
$layers = $map->GetLayers();
for ($i = 0; $i < $layers->GetCount(); $i++) {
$layer = $layers->GetItem($i);
if (!$layer->IsVisible() || !$layer->GetDisplayInLegend()) {
//print_r("[SKIP]: Skipping layer (".$layer->GetLegendLabel().") - not visible or not set to display in legend <br/>");
continue;
}
if ($offsetY > $height) {
//print_r("********** STOP! Past image bounds ****************<br/>");
break;
}
$parentGroup = $layer->GetGroup();
$bRequiredInLegend = false;
$grpId = "";
$parentId = "";
if ($group != NULL) {
$grpId = $group->GetObjectId();
}
if ($parentGroup != NULL) {
$parentId = $parentGroup->GetObjectId();
}
if ($group == NULL && $parentGroup == NULL) {
$bRequiredInLegend = true;
} else {
if ($parentGroup != NULL && $group != NULL && $group->GetObjectId() == $parentGroup->GetObjectId()) {
$bRequiredInLegend = true;
}
}
if (!$bRequiredInLegend) {
//print_r("[SKIP]: Skipping layer (".$layer->GetLegendLabel().", group: $grpId, layer's parent: $parentId) - not required in legend <br/>");
continue;
}
$ldfId = $layer->GetLayerDefinition();
$layerContent = $resourceService->GetResourceContent($ldfId);
$xmldoc = new DOMDocument();
$xmldoc->loadXML(ByteReaderToString($layerContent));
$scaleRanges = $xmldoc->getElementsByTagName('VectorScaleRange');
if ($scaleRanges->length == 0) {
$scaleRanges = $xmldoc->getElementsByTagName('GridScaleRange');
if ($scaleRanges->length > 0) {
//Draw the image
imagecopy($image, $rasterIcon, $offsetX, $offsetY, 0, 0, $iconWidth, $iconHeight);
//Draw the label
//imagettftext($image, $fontSizePt, 0, ($offsetX + $xPad + $iconWidth), $offsetY, $textColor, $font, $layer->GetLegendLabel());
imagestring($image, $fontIndex, $offsetX + $xPad + $iconWidth, $offsetY, $layer->GetLegendLabel(), $textColor);
$offsetY += $yPad;
$offsetY += $iconHeight;
return;
} else {
$scaleRanges = $xmldoc->getElementsByTagName('DrawingLayerDefinition');
if ($scaleRanges->length > 0) {
//Draw the image
imagecopy($image, $dwfIcon, $offsetX, $offsetY, 0, 0, $iconWidth, $iconHeight);
//Draw the label
//imagettftext($image, $fontSizePt, 0, ($offsetX + $xPad + $iconWidth), $offsetY, $textColor, $font, $layer->GetLegendLabel());
imagestring($image, $fontIndex, $offsetX + $xPad + $iconWidth, $offsetY, $layer->GetLegendLabel(), $textColor);
$offsetY += $yPad;
$offsetY += $iconHeight;
return;
}
}
}
//print_r("Processing layer (".$layer->GetLegendLabel()."). Scale range count: ".$scaleRanges->length."<br/>");
for ($sc = 0; $sc < $scaleRanges->length; $sc++) {
$scaleRangeObj = NULL;
$scaleRangeObj->styles = array();
$scaleRange = $scaleRanges->item($sc);
$minElt = $scaleRange->getElementsByTagName('MinScale');
$maxElt = $scaleRange->getElementsByTagName('MaxScale');
$minScale = "0";
$maxScale = 'infinity';
// as MDF's VectorScaleRange::MAX_MAP_SCALE
if ($minElt->length > 0) {
$minScale = $minElt->item(0)->nodeValue;
}
if ($maxElt->length > 0) {
$maxScale = $maxElt->item(0)->nodeValue;
}
//Style is within our scale
if ($minScale == "0" && $maxScale == "infinity" || $scale >= floatval($minScale) && $scale <= floatval($maxScale) || $maxScale == "infinity" && $scale >= floatval($minScale)) {
$styleIndex = 0;
if (!IsThemed($scaleRange, $gt)) {
//print_r($layer->GetLegendLabel()." - ".$ldfId->ToString()." - Un-themed layer (geomType: $gt)<br/>");
$icon = $mappingService->GenerateLegendImage($ldfId, $scale, $iconWidth, $iconHeight, $iconFormat, $gt, 0);
$sink = new MgByteSink($icon);
$tempImage = sys_get_temp_dir() . DIRECTORY_SEPARATOR . "mgo_icon" . uniqid();
$sink->ToFile($tempImage);
$iconImg = imagecreatefrompng($tempImage);
//Draw the image
imagecopy($image, $iconImg, $offsetX, $offsetY, 0, 0, $iconWidth, $iconHeight);
imagedestroy($iconImg);
unlink($tempImage);
//Draw the label
//imagettftext($image, $fontSizePt, 0, ($offsetX + $xPad + $iconWidth), $offsetY, $textColor, $font, $layer->GetLegendLabel());
imagestring($image, $fontIndex, $offsetX + $xPad + $iconWidth, $offsetY, $layer->GetLegendLabel(), $textColor);
$offsetY += $yPad;
$offsetY += $iconHeight;
} else {
if ($scaleRange->getElementsByTagName("CompositeTypeStyle")->length > 0) {
$typeStyles = array(4 => "CompositeTypeStyle");
$ruleNames = array(4 => "CompositeRule");
} else {
$typeStyles = array(1 => "PointTypeStyle", 2 => "LineTypeStyle", 3 => "AreaTypeStyle");
$ruleNames = array(1 => "PointRule", 2 => "LineRule", 3 => "AreaRule");
}
//print_r($layer->GetLegendLabel()." - ".$ldfId->ToString()." - Themed layer ()<br/>");
//Draw the theme icon
imagecopy($image, $themeIcon, $offsetX, $offsetY, 0, 0, $iconWidth, $iconHeight);
//Draw the themed layer label
//imagettftext($image, $fontSizePt, 0, ($offsetX + $xPad + $iconWidth), $offsetY, $textColor, $font, $layer->GetLegendLabel());
imagestring($image, $fontIndex, $offsetX + $xPad + $iconWidth, $offsetY, $layer->GetLegendLabel(), $textColor);
$offsetX += $xIndent;
$offsetY += $yPad;
$offsetY += $iconHeight;
//for($ts=0, $count = count($typeStyles); $ts < $count; $ts++)
foreach ($typeStyles as $ts => $styleName) {
//print_r(" - Checking $styleName ($ts)<br/>");
$typeStyle = $scaleRange->getElementsByTagName($styleName);
$catIndex = 0;
//print_r(" -- Found ".$typeStyle->length." elements<br/>");
for ($st = 0; $st < $typeStyle->length; $st++) {
$styleObj = NULL;
// We will check if this typestyle is going to be shown in the legend
$showInLegend = $typeStyle->item($st)->getElementsByTagName("ShowInLegend");
if ($showInLegend->length > 0) {
if ($showInLegend->item(0)->nodeValue == "false") {
//print_r("Skipping $styleName in (".$layer->GetLegendLabel().") because ShowInLegend is: ".$showInLegend->item(0)->nodeValue."<br/>");
continue;
// This typestyle does not need to be shown in the legend
}
}
$rules = $typeStyle->item($st)->getElementsByTagName($ruleNames[$ts]);
for ($r = 0; $r < $rules->length; $r++) {
$rule = $rules->item($r);
$label = $rule->getElementsByTagName("LegendLabel");
$labelText = $label->length == 1 ? $label->item(0)->nodeValue : "";
$icon = $mappingService->GenerateLegendImage($ldfId, $scale, $iconWidth, $iconHeight, $iconFormat, $ts, $catIndex++);
$sink = new MgByteSink($icon);
$tempImage = sys_get_temp_dir() . DIRECTORY_SEPARATOR . "mgo_icon" . uniqid();
$sink->ToFile($tempImage);
$iconImg = imagecreatefrompng($tempImage);
//Draw the image
imagecopy($image, $iconImg, $offsetX, $offsetY, 0, 0, $iconWidth, $iconHeight);
imagedestroy($iconImg);
unlink($tempImage);
//Draw the label
//imagettftext($image, $fontSizePt, 0, ($offsetX + $xPad + $iconWidth), $offsetY, $textColor, $font, $layer->GetLegendLabel());
imagestring($image, $fontIndex, $offsetX + $xPad + $iconWidth, $offsetY, $labelText, $textColor);
$offsetY += $yPad;
$offsetY += $iconHeight;
if ($offsetY > $height) {
break;
}
}
}
}
$offsetX -= $xIndent;
}
} else {
//print_r("[SKIP]: Layer (".$layer->GetLegendLabel()."). Current scale ($scale) does not fit scale range [$minScale to $maxScale]<br/>");
}
}
}
}
public function GetTileXYZ($resId, $groupName, $x, $y, $z, $type, $layerNames = NULL)
{
$fmt = $this->ValidateRepresentation($type, array("json", "png", "png8", "jpg", "gif"));
$path = self::GetTilePath($this->app, $resId, $groupName, $z, $x, $y, $type, $layerNames);
clearstatcache();
$dir = dirname($path);
$lockPath = "{$dir}/lock_" . $y . ".lck";
$attempts = 0;
while (!@is_dir($dir)) {
try {
mkdir($dir, 0777, true);
} catch (Exception $e) {
//Another tile request may have already created this since
$attempts++;
//Bail after MAX_RETRY_ATTEMPTS
if ($attempts >= self::MAX_RETRY_ATTEMPTS) {
$this->ServerError($this->app->localizer->getText("E_FAILED_TO_CREATE_DIR_AFTER_N_ATTEMPTS", $attempts), $this->GetMimeTypeForFormat($type));
}
}
}
//If there's a dangling lock file, attempt to remove it
if (file_exists($lockPath)) {
unlink($lockPath);
}
$fpLockFile = fopen($lockPath, "a+");
//Message of any exception caught will be set to this variable
$tileError = null;
$requestId = rand();
$this->app->log->debug("({$requestId}) Checking if {$path} exists");
$attempts = 0;
while (!file_exists($path)) {
//Bail after MAX_RETRY_ATTEMPTS
if ($attempts >= self::MAX_RETRY_ATTEMPTS) {
$this->ServerError($this->app->localizer->getText("E_FAILED_TO_GENERATE_TILE_AFTER_N_ATTEMPTS", $attempts), $this->GetMimeTypeForFormat($type));
}
$attempts++;
$this->app->log->debug("({$requestId}) {$path} does not exist. Locking for writing");
$bLocked = false;
flock($fpLockFile, LOCK_EX);
fwrite($fpLockFile, ".");
$bLocked = true;
$this->app->log->debug("({$requestId}) Acquired lock for {$path}. Checking if path exists again.");
//check once more to see if the cache file was created while waiting for
//the lock
clearstatcache();
if (!file_exists($path)) {
try {
$this->app->log->debug("({$requestId}) Rendering tile to {$path}");
$bOldPath = true;
if ($type != "json") {
//if this is MGOS 3.0 and we're dealing with a tile set, we invoke GETTILEIMAGE as that we can pass in Tile Set Definition
//resource ids without issues. We cannot create MgMaps from Tile Set Definitions that are not using the default tile provider.
//
//The given tile set is assumed to be using the XYZ provider, the case where the Tile Set Definition is using the default provider
//is not handled
if ($this->app->MG_VERSION[0] >= 3 && $resId->GetResourceType() == "TileSetDefinition") {
$bOldPath = false;
$sessionId = "";
if ($resId->GetRepositoryType() === MgRepositoryType::Session && $this->app->request->get("session") == null) {
$sessionId = $resId->GetRepositoryName();
}
$resIdStr = $resId->ToString();
$that = $this;
$this->EnsureAuthenticationForHttp(function ($req, $param) use($that, $resIdStr, $groupName, $x, $y, $z, $requestId, $path) {
$param->AddParameter("OPERATION", "GETTILEIMAGE");
$param->AddParameter("VERSION", "1.2.0");
$param->AddParameter("MAPDEFINITION", $resIdStr);
$param->AddParameter("BASEMAPLAYERGROUPNAME", $groupName);
$param->AddParameter("SCALEINDEX", $z);
$param->AddParameter("TILEROW", $x);
$param->AddParameter("TILECOL", $y);
$that->app->log->debug("({$requestId}) Executing GETTILEIMAGE");
$that->ExecuteHttpRequest($req, function ($result, $status) use($path) {
if ($status == 200) {
//Need to dump the rendered tile to the specified path so the caching stuff below can still do its thing
$resultObj = $result->GetResultObject();
$sink = new MgByteSink($resultObj);
$sink->ToFile($path);
}
});
}, true, "", $sessionId);
//Tile access can be anonymous, so allow for it if credentials/session specified, but if this is a session-based Map Definition, use the session id as the nominated one
}
}
//Pre MGOS 3.0 code path
if ($bOldPath) {
$this->app->log->debug("({$requestId}) Going down old code path");
$this->EnsureAuthenticationForSite("", true);
$siteConn = new MgSiteConnection();
$siteConn->Open($this->userInfo);
$map = new MgMap($siteConn);
$map->Create($resId, "VectorTileMap");
$renderSvc = $siteConn->CreateService(MgServiceType::RenderingService);
$groups = $map->GetLayerGroups();
$baseGroup = $groups->GetItem($groupName);
//Will throw MgObjectNotFoundException -> 404 if no such group exists
$factory = new MgCoordinateSystemFactory();
$mapCsWkt = $map->GetMapSRS();
$mapCs = $factory->Create($mapCsWkt);
$mapExtent = $map->GetMapExtent();
$mapExLL = $mapExtent->GetLowerLeftCoordinate();
$mapExUR = $mapExtent->GetUpperRightCoordinate();
$metersPerUnit = $mapCs->ConvertCoordinateSystemUnitsToMeters(1.0);
$this->app->log->debug("({$requestId}) Calc bounds from XYZ");
//XYZ to lat/lon math. From this we can convert to the bounds in the map's CS
//
//Source: http://wiki.openstreetmap.org/wiki/Slippy_map_tilenames
$n = pow(2, $z);
$lonMin = $x / $n * 360.0 - 180.0;
$latMin = rad2deg(atan(sinh(pi() * (1 - 2 * $y / $n))));
$lonMax = ($x + 1) / $n * 360.0 - 180.0;
$latMax = rad2deg(atan(sinh(pi() * (1 - 2 * ($y + 1) / $n))));
$boundsMinX = min($lonMin, $lonMax);
$boundsMinY = min($latMin, $latMax);
$boundsMaxX = max($lonMax, $lonMin);
$boundsMaxY = max($latMax, $latMin);
if ($mapCs->GetCsCode() != "LL84") {
$llCs = $factory->CreateFromCode("LL84");
$trans = $factory->GetTransform($llCs, $mapCs);
$ul = $trans->Transform($lonMin, $latMin);
$lr = $trans->Transform($lonMax, $latMax);
$boundsMinX = min($lr->GetX(), $ul->GetX());
$boundsMinY = min($lr->GetY(), $ul->GetY());
$boundsMaxX = max($lr->GetX(), $ul->GetX());
$boundsMaxY = max($lr->GetY(), $ul->GetY());
}
//Set all layers under group to be visible
$layers = $map->GetLayers();
$layerCount = $layers->GetCount();
$groupCount = $groups->GetCount();
//Turn all groups that are not the given group to be hidden
for ($i = 0; $i < $groupCount; $i++) {
$group = $groups->GetItem($i);
if ($group->GetName() != $groupName) {
$group->SetVisible(false);
} else {
$group->SetVisible(true);
}
}
for ($i = 0; $i < $layerCount; $i++) {
$layer = $layers->GetItem($i);
$group = $layer->GetGroup();
if (null == $group) {
continue;
}
if ($group->GetName() != $groupName && $layer->GetLayerType() == MgLayerType::Dynamic) {
$layer->SetVisible(false);
continue;
}
if ($layer->GetLayerType() == MgLayerType::Dynamic) {
$layer->SetVisible(true);
}
}
if ($type == "json") {
//error_log("($requestId) Render vector tile");
$this->PutVectorTileXYZ($map, $groupName, $siteConn, $metersPerUnit, $factory, $path, $boundsMinX, $boundsMinY, $boundsMaxX, $boundsMaxY, $layerNames);
} else {
$format = strtoupper($type);
//error_log("($requestId) Render image tile");
$this->PutTileImageXYZ($map, $groupName, $renderSvc, $path, $format, $boundsMinX, $boundsMinY, $boundsMaxX, $boundsMaxY, $layerNames, $requestId);
}
}
} catch (MgException $ex) {
if ($bLocked) {
$this->app->log->debug("({$requestId}) MgException caught " . $ex->GetDetails() . "\n" . $ex->getTraceAsString() . "\n. Releasing lock for {$path}");
$tileError = $ex->GetExceptionMessage();
flock($fpLockFile, LOCK_UN);
$bLocked = false;
}
if ($ex instanceof MgResourceNotFoundException || $ex instanceof MgObjectNotFoundException) {
$this->NotFound($ex->GetExceptionMessage(), $this->GetMimeTypeForFormat($fmt));
} else {
if ($ex instanceof MgConnectionFailedException) {
$this->ServiceUnavailable($ex->GetExceptionMessage(), $this->GetMimeTypeForFormat($fmt));
}
}
} catch (Exception $ex) {
if ($bLocked) {
$tileError = get_class($ex) . " - " . $ex->getMessage();
$this->app->log->debug("({$requestId}) Exception caught ({$tileError}). Releasing lock for {$path}");
flock($fpLockFile, LOCK_UN);
$bLocked = false;
}
}
}
if ($bLocked) {
$this->app->log->debug("({$requestId}) Releasing lock for {$path}");
flock($fpLockFile, LOCK_UN);
$bLocked = false;
}
}
//An exception occurred, try to clean up lock before bailing
if ($tileError != null) {
try {
fclose($fpLockFile);
unlink($lockPath);
} catch (Exception $ex) {
$this->app->log->debug("({$requestId}) Failed to delete lock file. Perhaps another concurrent request to the same tile is happening?");
}
throw new Exception($tileError);
}
$modTime = filemtime($path);
$this->app->lastModified($modTime);
$this->app->log->debug("({$requestId}) Acquiring shared lock for {$path}");
//acquire shared lock for reading to prevent a problem that could occur
//if a tile exists but is only partially generated.
flock($fpLockFile, LOCK_SH);
$this->app->log->debug("({$requestId}) Outputting {$path}");
$ext = strtoupper(pathinfo($path, PATHINFO_EXTENSION));
$mimeType = "";
switch ($ext) {
case "PNG":
//MgImageFormats::Png:
$mimeType = MgMimeType::Png;
break;
case "GIF":
//MgImageFormats::Gif:
$mimeType = MgMimeType::Gif;
break;
case "JPG":
//MgImageFormats::Jpeg:
$mimeType = MgMimeType::Jpeg;
break;
case "JSON":
$mimeType = MgMimeType::Json;
break;
}
$this->app->response->header("Content-Type", $mimeType);
$this->app->expires("+6 months");
$this->app->response->header("Cache-Control", "max-age=31536000, must-revalidate");
$this->app->response->setBody(file_get_contents($path));
$this->app->log->debug("({$requestId}) Releasing shared lock for {$path}");
//Release lock
flock($fpLockFile, LOCK_UN);
//Try to delete the lock file
try {
fclose($fpLockFile);
unlink($lockPath);
} catch (Exception $ex) {
$this->app->log->debug("({$requestId}) Failed to delete lock file. Perhaps another concurrent request to the same tile is happening?");
}
}