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-rw-r--r--hugo/libraries/gis/pma_gis_linestring.php298
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diff --git a/hugo/libraries/gis/pma_gis_linestring.php b/hugo/libraries/gis/pma_gis_linestring.php
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+<?php
+/* vim: set expandtab sw=4 ts=4 sts=4: */
+/**
+ * Handles actions related to GIS LINESTRING objects
+ *
+ * @package PhpMyAdmin-GIS
+ */
+
+if (! defined('PHPMYADMIN')) {
+ exit;
+}
+
+/**
+ * Handles actions related to GIS LINESTRING objects
+ *
+ * @package PhpMyAdmin-GIS
+ */
+class PMA_GIS_Linestring extends PMA_GIS_Geometry
+{
+ // Hold the singleton instance of the class
+ private static $_instance;
+
+ /**
+ * A private constructor; prevents direct creation of object.
+ *
+ * @access private
+ */
+ private function __construct()
+ {
+ }
+
+ /**
+ * Returns the singleton.
+ *
+ * @return object the singleton
+ * @access public
+ */
+ public static function singleton()
+ {
+ if (!isset(self::$_instance)) {
+ $class = __CLASS__;
+ self::$_instance = new $class;
+ }
+
+ return self::$_instance;
+ }
+
+ /**
+ * Scales each row.
+ *
+ * @param string $spatial spatial data of a row
+ *
+ * @return array an array containing the min, max values for x and y cordinates
+ * @access public
+ */
+ public function scaleRow($spatial)
+ {
+ // Trim to remove leading 'LINESTRING(' and trailing ')'
+ $linesrting = substr($spatial, 11, (strlen($spatial) - 12));
+ return $this->setMinMax($linesrting, array());
+ }
+
+ /**
+ * Adds to the PNG image object, the data related to a row in the GIS dataset.
+ *
+ * @param string $spatial GIS LINESTRING object
+ * @param string $label Label for the GIS LINESTRING object
+ * @param string $line_color Color for the GIS LINESTRING object
+ * @param array $scale_data Array containing data related to scaling
+ * @param object $image Image object
+ *
+ * @return object the modified image object
+ * @access public
+ */
+ public function prepareRowAsPng($spatial, $label, $line_color,
+ $scale_data, $image
+ ) {
+ // allocate colors
+ $black = imagecolorallocate($image, 0, 0, 0);
+ $red = hexdec(substr($line_color, 1, 2));
+ $green = hexdec(substr($line_color, 3, 2));
+ $blue = hexdec(substr($line_color, 4, 2));
+ $color = imagecolorallocate($image, $red, $green, $blue);
+
+ // Trim to remove leading 'LINESTRING(' and trailing ')'
+ $linesrting = substr($spatial, 11, (strlen($spatial) - 12));
+ $points_arr = $this->extractPoints($linesrting, $scale_data);
+
+ foreach ($points_arr as $point) {
+ if (! isset($temp_point)) {
+ $temp_point = $point;
+ } else {
+ // draw line section
+ imageline(
+ $image, $temp_point[0], $temp_point[1],
+ $point[0], $point[1], $color
+ );
+ $temp_point = $point;
+ }
+ }
+ // print label if applicable
+ if (isset($label) && trim($label) != '') {
+ imagestring(
+ $image, 1, $points_arr[1][0],
+ $points_arr[1][1], trim($label), $black
+ );
+ }
+ return $image;
+ }
+
+ /**
+ * Adds to the TCPDF instance, the data related to a row in the GIS dataset.
+ *
+ * @param string $spatial GIS LINESTRING object
+ * @param string $label Label for the GIS LINESTRING object
+ * @param string $line_color Color for the GIS LINESTRING object
+ * @param array $scale_data Array containing data related to scaling
+ * @param object $pdf TCPDF instance
+ *
+ * @return object the modified TCPDF instance
+ * @access public
+ */
+ public function prepareRowAsPdf($spatial, $label, $line_color, $scale_data, $pdf)
+ {
+ // allocate colors
+ $red = hexdec(substr($line_color, 1, 2));
+ $green = hexdec(substr($line_color, 3, 2));
+ $blue = hexdec(substr($line_color, 4, 2));
+ $line = array('width' => 1.5, 'color' => array($red, $green, $blue));
+
+ // Trim to remove leading 'LINESTRING(' and trailing ')'
+ $linesrting = substr($spatial, 11, (strlen($spatial) - 12));
+ $points_arr = $this->extractPoints($linesrting, $scale_data);
+
+ foreach ($points_arr as $point) {
+ if (! isset($temp_point)) {
+ $temp_point = $point;
+ } else {
+ // draw line section
+ $pdf->Line(
+ $temp_point[0], $temp_point[1],
+ $point[0], $point[1], $line
+ );
+ $temp_point = $point;
+ }
+ }
+ // print label
+ if (isset($label) && trim($label) != '') {
+ $pdf->SetXY($points_arr[1][0], $points_arr[1][1]);
+ $pdf->SetFontSize(5);
+ $pdf->Cell(0, 0, trim($label));
+ }
+ return $pdf;
+ }
+
+ /**
+ * Prepares and returns the code related to a row in the GIS dataset as SVG.
+ *
+ * @param string $spatial GIS LINESTRING object
+ * @param string $label Label for the GIS LINESTRING object
+ * @param string $line_color Color for the GIS LINESTRING object
+ * @param array $scale_data Array containing data related to scaling
+ *
+ * @return string the code related to a row in the GIS dataset
+ * @access public
+ */
+ public function prepareRowAsSvg($spatial, $label, $line_color, $scale_data)
+ {
+ $line_options = array(
+ 'name' => $label,
+ 'id' => $label . rand(),
+ 'class' => 'linestring vector',
+ 'fill' => 'none',
+ 'stroke' => $line_color,
+ 'stroke-width'=> 2,
+ );
+
+ // Trim to remove leading 'LINESTRING(' and trailing ')'
+ $linesrting = substr($spatial, 11, (strlen($spatial) - 12));
+ $points_arr = $this->extractPoints($linesrting, $scale_data);
+
+ $row = '<polyline points="';
+ foreach ($points_arr as $point) {
+ $row .= $point[0] . ',' . $point[1] . ' ';
+ }
+ $row .= '"';
+ foreach ($line_options as $option => $val) {
+ $row .= ' ' . $option . '="' . trim($val) . '"';
+ }
+ $row .= '/>';
+
+ return $row;
+ }
+
+ /**
+ * Prepares JavaScript related to a row in the GIS dataset
+ * to visualize it with OpenLayers.
+ *
+ * @param string $spatial GIS LINESTRING object
+ * @param int $srid Spatial reference ID
+ * @param string $label Label for the GIS LINESTRING object
+ * @param string $line_color Color for the GIS LINESTRING object
+ * @param array $scale_data Array containing data related to scaling
+ *
+ * @return string JavaScript related to a row in the GIS dataset
+ * @access public
+ */
+ public function prepareRowAsOl($spatial, $srid, $label, $line_color, $scale_data)
+ {
+ $style_options = array(
+ 'strokeColor' => $line_color,
+ 'strokeWidth' => 2,
+ 'label' => $label,
+ 'fontSize' => 10,
+ );
+ if ($srid == 0) {
+ $srid = 4326;
+ }
+ $result = $this->getBoundsForOl($srid, $scale_data);
+
+ // Trim to remove leading 'LINESTRING(' and trailing ')'
+ $linesrting = substr($spatial, 11, (strlen($spatial) - 12));
+ $points_arr = $this->extractPoints($linesrting, null);
+
+ $result .= 'vectorLayer.addFeatures(new OpenLayers.Feature.Vector('
+ . $this->getLineForOpenLayers($points_arr, $srid)
+ . ', null, ' . json_encode($style_options) . '));';
+ return $result;
+ }
+
+ /**
+ * Generate the WKT with the set of parameters passed by the GIS editor.
+ *
+ * @param array $gis_data GIS data
+ * @param int $index Index into the parameter object
+ * @param string $empty Value for empty points
+ *
+ * @return string WKT with the set of parameters passed by the GIS editor
+ * @access public
+ */
+ public function generateWkt($gis_data, $index, $empty = '')
+ {
+ $no_of_points = isset($gis_data[$index]['LINESTRING']['no_of_points'])
+ ? $gis_data[$index]['LINESTRING']['no_of_points'] : 2;
+ if ($no_of_points < 2) {
+ $no_of_points = 2;
+ }
+ $wkt = 'LINESTRING(';
+ for ($i = 0; $i < $no_of_points; $i++) {
+ $wkt .= ((isset($gis_data[$index]['LINESTRING'][$i]['x'])
+ && trim($gis_data[$index]['LINESTRING'][$i]['x']) != '')
+ ? $gis_data[$index]['LINESTRING'][$i]['x'] : $empty)
+ . ' ' . ((isset($gis_data[$index]['LINESTRING'][$i]['y'])
+ && trim($gis_data[$index]['LINESTRING'][$i]['y']) != '')
+ ? $gis_data[$index]['LINESTRING'][$i]['y'] : $empty) .',';
+ }
+ $wkt = substr($wkt, 0, strlen($wkt) - 1);
+ $wkt .= ')';
+ return $wkt;
+ }
+
+ /**
+ * Generate parameters for the GIS data editor from the value of the GIS column.
+ *
+ * @param string $value of the GIS column
+ * @param int $index of the geometry
+ *
+ * @return array params for the GIS data editor from the value of the GIS column
+ * @access public
+ */
+ public function generateParams($value, $index = -1)
+ {
+ if ($index == -1) {
+ $index = 0;
+ $params = array();
+ $data = PMA_GIS_Geometry::generateParams($value);
+ $params['srid'] = $data['srid'];
+ $wkt = $data['wkt'];
+ } else {
+ $params[$index]['gis_type'] = 'LINESTRING';
+ $wkt = $value;
+ }
+
+ // Trim to remove leading 'LINESTRING(' and trailing ')'
+ $linestring = substr($wkt, 11, (strlen($wkt) - 12));
+ $points_arr = $this->extractPoints($linestring, null);
+
+ $no_of_points = count($points_arr);
+ $params[$index]['LINESTRING']['no_of_points'] = $no_of_points;
+ for ($i = 0; $i < $no_of_points; $i++) {
+ $params[$index]['LINESTRING'][$i]['x'] = $points_arr[$i][0];
+ $params[$index]['LINESTRING'][$i]['y'] = $points_arr[$i][1];
+ }
+
+ return $params;
+ }
+}
+?>
generated by cgit v1.0-28-g1787 at 2026-01-09 07:58:23 +0000