Viewing file:  tbl_gis_visualization.lib.php (9.22 KB) -rw-r--r--
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<?php
/* vim: set expandtab sw=4 ts=4 sts=4: */
/**
* Functions used to generate GIS visualizations.
*
* @package PhpMyAdmin
*/
if (!defined('PHPMYADMIN')) {
exit;
}
require_once 'libraries/sql.lib.php';
/**
* Returns a modified sql query with only the label column
* and spatial column(wrapped with 'ASTEXT()' function).
*
* @param string $sql_query original sql query
* @param array $visualizationSettings settings for the visualization
*
* @return string the modified sql query.
*/
function PMA_GIS_modifyQuery($sql_query, $visualizationSettings)
{
$modified_query = 'SELECT ';
// If label column is chosen add it to the query
if (! empty($visualizationSettings['labelColumn'])) {
$modified_query .= PMA_Util::backquote($visualizationSettings['labelColumn'])
. ', ';
}
// Wrap the spatial column with 'ASTEXT()' function and add it
$modified_query .= 'ASTEXT('
. PMA_Util::backquote($visualizationSettings['spatialColumn'])
. ') AS ' . PMA_Util::backquote($visualizationSettings['spatialColumn'])
. ', ';
// Get the SRID
$modified_query .= 'SRID('
. PMA_Util::backquote($visualizationSettings['spatialColumn'])
. ') AS ' . PMA_Util::backquote('srid') . ' ';
// Append the original query as the inner query
$modified_query .= 'FROM (' . $sql_query . ') AS '
. PMA_Util::backquote('temp_gis');
return $modified_query;
}
/**
* Formats a visualization for the GIS query results.
*
* @param array $data Data for the status chart
* @param array &$visualizationSettings Settings used to generate the chart
* @param string $format Format of the visualization
*
* @return string|bool HTML and JS code for the GIS visualization or false on failure
*/
function PMA_GIS_visualizationResults($data, &$visualizationSettings, $format)
{
include_once './libraries/gis/GIS_Visualization.class.php';
include_once './libraries/gis/GIS_Factory.class.php';
if (! isset($data[0])) {
// empty data
return __('No data found for GIS visualization.');
}
$visualization = new PMA_GIS_Visualization($data, $visualizationSettings);
if ($visualizationSettings != null) {
foreach ($visualization->getSettings() as $setting => $val) {
if (! isset($visualizationSettings[$setting])) {
$visualizationSettings[$setting] = $val;
}
}
}
if ($format == 'svg') {
return $visualization->asSvg();
} elseif ($format == 'png') {
return $visualization->asPng();
} elseif ($format == 'ol') {
return $visualization->asOl();
}
return false;
}
/**
* Generate visualization for the GIS query results and save it to a file.
*
* @param array $data data for the status chart
* @param array $visualizationSettings settings used to generate the chart
* @param string $format format of the visualization
* @param string $fileName file name
*
* @return file File containing the visualization
*/
function PMA_GIS_saveToFile($data, $visualizationSettings, $format, $fileName)
{
include_once './libraries/gis/GIS_Visualization.class.php';
include_once './libraries/gis/GIS_Factory.class.php';
if (isset($data[0])) {
$visualization = new PMA_GIS_Visualization($data, $visualizationSettings);
if ($format == 'svg') {
$visualization->toFileAsSvg($fileName);
} elseif ($format == 'png') {
$visualization->toFileAsPng($fileName);
} elseif ($format == 'pdf') {
$visualization->toFileAsPdf($fileName);
}
}
}
/**
* Function to get html for the label column and spatial column
*
* @param string $column the column type. i.e either "labelColumn"
* or "spatialColumn"
* @param array $columnCandidates the list of select options
* @param array $visualizationSettings visualization settings
*
* @return string $html
*/
function PMA_getHtmlForSelect($column, $columnCandidates, $visualizationSettings)
{
$html = '<label for="' . $column . '">';
$html .= ($column=="labelColumn") ? __("Label column") : __("Spatial column");
$html .= '</label>';
$html .= '<select name="visualizationSettings[' . $column . ']" id="'
. $column . '" class="autosubmit">';
if ($column == "labelColumn") {
$html .= '<option value="">' . __("-- None --") . '</option>';
}
$html .= PMA_getHtmlForOptionsList(
array_map("htmlspecialchars", $columnCandidates),
array(htmlspecialchars($visualizationSettings[$column]))
);
$html .= '</select>';
return $html;
}
/**
* Function to get HTML for the option of using open street maps
*
* @param boolean $isSelected the default value
*
* @return string HTML string
*/
function PMA_getHtmlForUseOpenStreetMaps($isSelected)
{
$html = '<tr><td class="choice" colspan="2">';
$html .= '<input type="checkbox" name="visualizationSettings[choice]"'
. 'id="choice" value="useBaseLayer"';
if ($isSelected) {
$html .= ' checked="checked"';
}
$html .= '/>';
$html .= '<label for="choice">';
$html .= __("Use OpenStreetMaps as Base Layer");
$html .= '</label>';
$html .= '</td></tr>';
return $html;
}
/**
* Get the link for downloading GIS visualization in a particular format.
*
* @param string $url base url
* @param string $name format name
* @param string $label format label
*
* @return string HTML for download link
*/
function PMA_getHtmlForGisDownloadLink($url, $name, $label)
{
$html = '<li class="warp_link">';
$html .= '<a href="' . $url . '&fileFormat=' . $name . '"'
. ' class="disableAjax">' . $label . '</a>';
$html .= '</li>';
return $html;
}
/**
* Function to generate HTML for the GIS visualization page
*
* @param array $url_params url parameters
* @param array $labelCandidates list of candidates for the label
* @param array $spatialCandidates list of candidates for the spatial column
* @param array $visualizationSettings visualization settings
* @param String $sql_query the sql query
* @param String $visualization HTML and js code for the visualization
* @param boolean $svg_support whether svg download format is supported
* @param array $data array of visualizing data
*
* @return string HTML code for the GIS visualization
*/
function PMA_getHtmlForGisVisualization(
$url_params, $labelCandidates, $spatialCandidates, $visualizationSettings,
$sql_query, $visualization, $svg_support, $data
) {
$html = '<div id="div_view_options">';
$html .= '<fieldset>';
$html .= '<legend>' . __('Display GIS Visualization') . '</legend>';
$html .= '<div id="gis_div" style="position:relative;">';
$html .= '<form method="post" action="tbl_gis_visualization.php">';
$html .= PMA_URL_getHiddenInputs($url_params);
$html .= PMA_getHtmlForSelect(
"labelColumn", $labelCandidates, $visualizationSettings
);
$html .= PMA_getHtmlForSelect(
"spatialColumn", $spatialCandidates, $visualizationSettings
);
$html .= '<input type="hidden" name="displayVisualization" value="redraw">';
$html .= '<input type="hidden" name="sql_query" value="';
$html .= htmlspecialchars($sql_query) . '" />';
$html .= '</form>';
if (! $GLOBALS['PMA_Config']->isHttps()) {
$isSelected = isset($visualizationSettings['choice']) ? true : false;
$html .= PMA_getHtmlForUseOpenStreetMaps($isSelected);
}
$html .= '<div class="pma_quick_warp" style="width: 50px; position: absolute;'
. ' right: 0; top: 0; cursor: pointer;">';
$html .= '<div class="drop_list">';
$html .= '<span class="drop_button" style="padding: 0; border: 0;">';
$html .= PMA_Util::getImage('b_saveimage', __('Save'));
$html .= '</span>';
$url_params['sql_query'] = $sql_query;
$url_params['saveToFile'] = 'download';
$url = 'tbl_gis_visualization.php' . PMA_URL_getCommon($url_params);
$html .= '<ul>';
$html .= PMA_getHtmlForGisDownloadLink($url, 'png', 'PNG');
$html .= PMA_getHtmlForGisDownloadLink($url, 'pdf', 'PDF');
if ($svg_support) {
$html .= PMA_getHtmlForGisDownloadLink($url, 'svg', 'SVG');
}
$html .= '</ul>';
$html .= '</div></div>';
$html .= '</div>';
$html .= '<div style="clear:both;"> </div>';
$html .= '<div id="placeholder" style="width:';
$html .= htmlspecialchars($visualizationSettings['width']) . 'px;height:';
$html .= htmlspecialchars($visualizationSettings['height']) . 'px;">';
$html .= $visualization;
$html .= '</div>';
$html .= '<div id="openlayersmap"></div>';
$html .= '<input type="hidden" id="pmaThemeImage" value="';
$html .= $GLOBALS['pmaThemeImage'] . '" />';
$html .= '<script language="javascript" type="text/javascript">';
$html .= 'function drawOpenLayers()';
$html .= '{';
if (! $GLOBALS['PMA_Config']->isHttps()) {
$html .= PMA_GIS_visualizationResults($data, $visualizationSettings, 'ol');
}
$html .= '}';
$html .= '</script>';
$html .= '</fieldset>';
$html .= '</div>';
return $html;
}
?>
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