File elements/world-map.php

  1   2   3   4   5   6   7   8   9  10  11  12  13  14  15  16  17  18  19  20  21  22  23  24  25  26  27  28  29  30  31  32  33  34  35  36  37  38  39  40  41  42  43  44  45  46  47  48  49  50  51  52  53  54  55  56  57  58  59  60  61  62  63  64  65  66  67  68  69  70  71  72  73  74  75  76  77  78  79  80  81  82  83  84  85  86  87  88  89  90  91  92  93  94  95  96  97  98  99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175

<?php

namespace SIW\Elements;

use SIW\CSS;
use SIW\Data\Country;
use SIW\Data\Continent;
use SIW\HTML;

/**
 * Wereldkaart
 * 
 * @copyright 2019 SIW Internationale Vrijwilligersprojecten
 * @since     3.0.0
 */
class World_Map {

    /**
     * Bestandsnaam van wereldkaart
     *
     * @var string
     */
    protected $map_file = SIW_ASSETS_URL . 'images/maps/world.svg';

    /**
     * Land
     *
     * @var Country
     */
    protected $country;

    /**
     * Continent
     *
     * @var Continent
     */
    protected $continent;

    /**
     * Zoom-niveau
     *
     * @var int
     */
    protected $zoom = 1;

    /**
     * Breedte van SVG
     *
     * @var float
     */
    protected $width = 1200;

    /**
     * Hoogte van SVG
     *
     * @var float
     */
    protected $height = 760;

    /**
     * Constructor
     */
    public function __construct() {
        $this->enqueue_script();
    }

    /**
     * Voegt SVG-script toe
     */
    protected function enqueue_script() {
        wp_enqueue_script( 'siw-svg' );
    }

    /**
     * Voegt (inline) style toe
     */
    protected function enqueue_style() {
        $code = $this->country->get_world_map_data()->code;
        $inline_css = CSS::generate_inline_css(
            [
                'svg' => [
                    'width' => '100%',
                    'height' => 'auto',
                ],
                "#{$code} path, path#{$code}" => [
                    'fill' => $this->continent->get_color(),
                ],
            ]
        );
        wp_register_style( 'siw-world-map', false );
        wp_enqueue_style( 'siw-world-map' );
        wp_add_inline_style( 'siw-world-map', $inline_css );
    }

    /**
     * Genereert kaart
     *
     * @param string|Country $country
     * @param int $zoom
     * @return string
     */
    public function generate( $country, int $zoom = 1 ) {
        if ( false === $this->set_country( $country ) ) {
            return false;
        }
        $this->zoom = $zoom;
        $this->enqueue_style();
        
        $div = HTML::generate_tag(
            'div',
            [
                'data-svg-url' => $this->map_file,
                'style'        => 'display:none;',
            ],
            null,
            true
        );
        $svg = HTML::generate_tag(
            'svg',
            [ 'viewBox' => $this->get_viewbox() ],
            '<use xlink:href="#mapplic-world"></use>',
            true
        );

        return $div . $svg;
    }

    /**
     * Zet land om in te kleuren
     *
     * @param string|Country $country
     * @return true
     */
    protected function set_country( $country ) {
        if ( is_string( $country ) ) {
            $country = siw_get_country( $country );
        }
        if ( ! is_a( $country, '\SIW\Data\Country') ) {
            return false;
        }
        $this->country = $country;
        $this->continent = $country->get_continent();
        return true;
    }

    /**
     * Bepaalt viewbox o.b.v. zoom en locatie land
     * 
     * @todo refactor
     */
    protected function get_viewbox() {
        $x = $this->country->get_world_map_data()->x;
        $y = $this->country->get_world_map_data()->y;
    
        $x = $this->calculate_offset( $x ) * $this->width;
        $y = $this->calculate_offset( $y ) * $this->height;

        $vb_width = $this->width / $this->zoom;
        $vb_height = $this->height / $this->zoom;
        return "{$x} {$y} {$vb_width} {$vb_height}";
    }

    /**
     * Berekent offset van coordinaat
     *
     * @param float $coordinate
     * @return float
     */
    protected function calculate_offset( float $coordinate ) {
        $coordinate = min( $coordinate + 1 / ( 2 * $this->zoom ), 1 );
        $coordinate = max( $coordinate - 1 / ( $this->zoom ), 0 );
        return $coordinate;
    }
}

Namespaces

Classes

Functions