+ /**
+ * @param array $images
+ * @return string
+ * @throws \Friendica\Network\HTTPException\ServiceUnavailableException
+ */
+ public static function makeImageGrid(array $images): string
+ {
+ $landscapeimages = array();
+ $portraitimages = array();
+
+ foreach ($images as $image) {
+ ($image['attachment']['width'] > $image['attachment']['height']) ? ($landscapeimages[] = $image) : ($portraitimages[] = $image);
+ }
+
+ // Image for first column (fc) and second column (sc)
+ $images_fc = array();
+ $images_sc = array();
+ $lcount = count($landscapeimages);
+ $pcount = count($portraitimages);
+ if ($lcount == 0 || $pcount == 0) {
+ if ($lcount == 0) {
+ // only portrait
+ for ($i = 0; $i < $pcount; $i++) {
+ ($i % 2 == 0) ? ($images_fc[] = $portraitimages[$i]) : ($images_sc[] = $portraitimages[$i]);
+ }
+ }
+ if ($pcount == 0) {
+ // ony landscapes
+ for ($i = 0; $i < $lcount; $i++) {
+ ($i % 2 == 0) ? ($images_fc[] = $landscapeimages[$i]) : ($images_sc[] = $landscapeimages[$i]);
+ }
+ }
+ } else {
+ // Mix of landscape and portrait images.
+ if ($lcount == $pcount) {
+ // equal amount of landscapes and portraits
+ if ($lcount == 1) {
+ // one left / one right
+ $images_fc[] = $landscapeimages[0];
+ $images_sc[] = $portraitimages[0];
+ } else {
+ // Distribute equal to both columns
+ for ($l = 0; $l < $lcount; $l++) {
+ if ($l % 2 == 0) {
+ // landscape left and portrait right for even numbers
+ $images_fc[] = $landscapeimages[$l];
+ $images_fc[] = $portraitimages[$l];
+ } else {
+ // portraits left and landscape right for odd numbers
+ $images_sc[] = $portraitimages[$l];
+ $images_sc[] = $landscapeimages[$l];
+ }
+ }
+ }
+ }
+ if ($lcount > $pcount) {
+ // More landscapes than portraits
+ $p = 0;
+ $l = 0;
+ while ($l < $lcount) {
+ if (($lcount > $l + 1) && ($pcount > $l)) {
+ // we have one more landscape that can be used for the l-th portrait
+ $images_fc[] = $landscapeimages[$l++];
+ }
+ $images_fc[] = $landscapeimages[$l++];
+ if ($pcount > $p) {
+ $images_sc[] = $portraitimages[$p++];
+ }
+
+ }
+ }
+ if ($lcount < $pcount) {
+ // More portraits than landscapes
+ if ($lcount % 2 == 0 && $pcount % 2 == 0) {
+ /*
+ * even number of landscapes and portraits, but fewer landscapes than portraits. Iterate to the end
+ * of landscapes array
+ */
+ $i = 0;
+ while ($i < $lcount) {
+ if ($i % 2 == 0) {
+ $images_fc[] = $landscapeimages[$i];
+ $images_fc[] = $portraitimages[$i];
+ } else {
+ $images_sc[] = $portraitimages[$i];
+ $images_sc[] = $landscapeimages[$i];
+ }
+ $i++;
+ }
+ // Rest portraits
+ while ($i < $pcount) {
+ if ($i % 2 == 0) {
+ $images_fc[] = $portraitimages[$i];
+ } else {
+ $images_sc[] = $portraitimages[$i];
+ }
+ $i++;
+ }
+
+ }
+ if ($lcount % 2 != 0 && $pcount % 2 == 0) {
+ // uneven landscapes count even portraits count.
+ for ($p = 0; $p < $pcount; $p++) {
+ // --> First all portraits until
+ if ($p % 2 == 0) {
+ $images_fc[] = $portraitimages[$p];
+ } else {
+ $images_sc[] = $portraitimages[$p];
+ }
+ }
+ // and now the (uneven) landscapes
+ for ($l = 0; $l < $lcount; $l++) {
+ // --> First all portraits until
+ if ($l % 2 == 0) {
+ $images_fc[] = $landscapeimages[$l];
+ } else {
+ $images_sc[] = $landscapeimages[$l];
+ }
+ }
+ }
+ }
+ }
+
+ return Renderer::replaceMacros(Renderer::getMarkupTemplate('content/image_grid.tpl'), [
+ 'columns' => [
+ 'fc' => $images_fc,
+ 'sc' => $images_sc,
+ ],
+ ]);
+ }
+