106 lines
2.6 KiB
PHP
106 lines
2.6 KiB
PHP
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<?php
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namespace Sphere\Debloat\OptimizeCss;
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use Sphere\Debloat\Plugin;
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/**
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* Add a few Google Font optimizations.
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*
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* @author asadkn
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* @since 1.0.0
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*/
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class GoogleFonts
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{
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public $active = false;
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protected $renders = [];
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public function enable()
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{
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$this->active = true;
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}
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/**
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* Add resource hints for preconnect and so on.
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*
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* @param string $html Full DOM HTML.
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* @return void
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*/
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public function add_hints($html)
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{
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if (!$this->active || !Plugin::options()->optimize_gfonts) {
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return $html;
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}
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// preconnect with dns-prefetch fallback for Firefox. Due to safari bug, can't be in same rel.
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$hint = '<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin />';
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$hint .= '<link rel="dns-prefetch" href="https://fonts.gstatic.com" />';
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// Only needed if not inlined.
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if (!Plugin::options()->optimize_css || !Plugin::options()->optimize_gfonts_inline) {
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$hint .= '<link rel="preconnect" href="https://fonts.googleapis.com" crossorigin />';
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$hint .= '<link rel="dns-prefetch" href="https://fonts.googleapis.com" />';
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}
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// Add in to head.
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$html = str_replace('<head>', '<head>' . $hint, $html);
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// No longer needed as preconnect's better and we always want to use https.
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$html = str_replace("<link rel='dns-prefetch' href='//fonts.googleapis.com' />", '', $html);
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return $html;
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}
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/**
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* Late processing and injecting data in HTML DOM.
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*
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* @param string $html
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* @return string
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*/
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public function render_in_dom($html)
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{
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if ($this->renders) {
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$html = str_replace('<head>', '<head>' . implode('', $this->renders), $html);
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}
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$html = $this->add_hints($html);
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return $html;
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}
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public function optimize(Stylesheet $sheet)
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{
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if (!$sheet->is_google_fonts()) {
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return;
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}
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// Set normal render if optimizations are disabled.
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if (!Plugin::options()->optimize_gfonts) {
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$sheet->render_type = 'normal';
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return;
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}
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$sheet->delay_type = 'preload';
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if (strpos($sheet->url, 'display=') === false) {
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$sheet->url .= '&display=swap';
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}
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}
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public function do_render(Stylesheet $sheet)
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{
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return $sheet->render();
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// $orig_media = $sheet->media;
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// // If no display= or if display=auto.
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// if (!preg_match('/display=(?!auto)/', $sheet->url)) {
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// $sheet->media = 'x';
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// }
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// // Add the JS to render with display: swap on mobile.
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// $extra = "<script>const e = document.currentScript.previousElementSibling; window.innerWidth > 1024 || (e.href+='&display=swap'); e.media='" . esc_js($orig_media) ."'</script>";
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// $this->renders[] = $sheet->render() . $extra;
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// // Return empty space to strip out the tag.
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// return ' ';
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}
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}
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