Merge pull request #13463 from MrPetovan/task/imagegrid-improvement
Rework image grid to horizontal masonry, allocate space for images to load
This commit is contained in:
Tobias Diekershoff
GitHub
commit
dd7bea4bd1
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@ -33,6 +33,7 @@ use Friendica\Core\Worker;
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use Friendica\Database\DBA;
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use Friendica\DI;
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use Friendica\Model\Post\Category;
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use Friendica\Model\Post\Media;
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use Friendica\Network\HTTPException\InternalServerErrorException;
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use Friendica\Protocol\Activity;
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use Friendica\Protocol\ActivityPub;
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@ -3273,25 +3274,65 @@ class Item
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}
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/**
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* Creates a horizontally masoned gallery with a fixed maximum number of pictures per row.
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*
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* For each row, we calculate how much of the total width each picture will take depending on their aspect ratio
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* and how much relative height it needs to accomodate all pictures next to each other with their height normalized.
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*
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* @param array $images
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* @return string
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* @throws \Friendica\Network\HTTPException\ServiceUnavailableException
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*/
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private static function makeImageGrid(array $images): string
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{
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// Image for first column (fc) and second column (sc)
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$images_fc = [];
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$images_sc = [];
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static $column_size = 2;
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for ($i = 0; $i < count($images); $i++) {
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($i % 2 == 0) ? ($images_fc[] = $images[$i]) : ($images_sc[] = $images[$i]);
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}
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$rows = array_map(
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function (array $row_images) {
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if ($singleImageInRow = count($row_images) == 1) {
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$row_images[] = $row_images[0];
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}
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$widths = [];
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$heights = [];
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foreach ($row_images as $image) {
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$widths[] = $image['attachment']['width'];
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$heights[] = $image['attachment']['height'];
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}
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$maxHeight = max($heights);
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// Corrected height preserving aspect ratio when all images on a row are
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$correctedWidths = [];
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foreach ($widths as $i => $width) {
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$correctedWidths[] = $width * $maxHeight / $heights[$i];
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}
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$totalWidth = array_sum($correctedWidths);
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foreach ($row_images as $i => $image) {
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$row_images[$i]['gridWidth'] = $correctedWidths[$i];
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$row_images[$i]['gridHeight'] = $maxHeight;
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$row_images[$i]['heightRatio'] = 100 * $maxHeight / $correctedWidths[$i];
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// Ratio of the width of the image relative to the total width of the images on the row
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$row_images[$i]['widthRatio'] = 100 * $correctedWidths[$i] / $totalWidth;
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// This magic value will stay constant for each image of any given row and
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// is ultimately used to determine the height of the row container
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$row_images[$i]['commonHeightRatio'] = 100 * $correctedWidths[$i] / $totalWidth / ($widths[$i] / $heights[$i]);
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}
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if ($singleImageInRow) {
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unset($row_images[1]);
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}
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return $row_images;
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},
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array_chunk($images, $column_size)
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);
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return Renderer::replaceMacros(Renderer::getMarkupTemplate('content/image_grid.tpl'), [
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'columns' => [
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'fc' => $images_fc,
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'sc' => $images_sc,
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],
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'$rows' => $rows,
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'$column_size' => $column_size,
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]);
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}
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@ -3309,7 +3350,20 @@ class Item
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if (empty($attachment['preview']) || ($attachment['type'] != Post\Media::IMAGE)) {
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continue;
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}
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$s = str_replace('<a href="' . $attachment['url'] . '"', '<a data-fancybox="' . $uri_id . '" href="' . $attachment['url'] . '"', $s);
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$pattern = '#<a href="' . preg_quote($attachment['url']) . '">(.*?)"></a>#';
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$s = preg_replace_callback($pattern, function () use ($attachment, $uri_id) {
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return Renderer::replaceMacros(Renderer::getMarkupTemplate('content/image.tpl'), [
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'$image' => [
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'src' => $attachment['url'],
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'uri_id' => $uri_id,
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'attachment' => $attachment,
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],
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'$allocated_height' => Media::getAllocatedHeightByMedia($attachment),
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'$allocated_max_width' => ($attachment['preview-width'] ?? $attachment['width']) . 'px',
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]);
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}, $s);
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}
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return $s;
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}
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@ -3424,8 +3478,10 @@ class Item
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if ($attachment['filetype'] == 'image') {
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$preview_url = Post\Media::getPreviewUrlForId($attachment['id'], ($attachment['width'] > $attachment['height']) ? Proxy::SIZE_MEDIUM : Proxy::SIZE_LARGE);
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$attachment['preview-width'] = ($attachment['width'] > $attachment['height']) ? Proxy::PIXEL_MEDIUM : Proxy::PIXEL_LARGE;
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} elseif (!empty($attachment['preview'])) {
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$preview_url = Post\Media::getPreviewUrlForId($attachment['id'], Proxy::SIZE_LARGE);
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$attachment['preview-width'] = Proxy::PIXEL_LARGE;
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} else {
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$preview_url = '';
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}
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@ -3469,6 +3525,7 @@ class Item
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if (self::containsLink($item['body'], $src_url)) {
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continue;
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}
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$images[] = ['src' => $src_url, 'preview' => $preview_url, 'attachment' => $attachment, 'uri_id' => $item['uri-id']];
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}
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}
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@ -3479,6 +3536,8 @@ class Item
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} elseif (count($images) == 1) {
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$media = Renderer::replaceMacros(Renderer::getMarkupTemplate('content/image.tpl'), [
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'$image' => $images[0],
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'$allocated_height' => Media::getAllocatedHeightByMedia($images[0]['attachment']),
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'$allocated_max_width' => ($images[0]['attachment']['preview-width'] ?? $images[0]['attachment']['width']) . 'px',
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]);
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}
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@ -1169,4 +1169,15 @@ class Media
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}
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return $url . $id;
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}
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/**
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* Computes the allocated height value used in the content/image.tpl template based on a post-media record
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*
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* @param array $media A post-media record array
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* @return string
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*/
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public static function getAllocatedHeightByMedia(array $media): string
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{
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return (100 * $media['height'] / $media['width']) . '%';
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}
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}
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@ -813,12 +813,14 @@ class Profile
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/**
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* Set the visitor cookies (see remote_user()) for signed HTTP requests
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(
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*
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* @param array $server The content of the $_SERVER superglobal
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* @return array Visitor contact array
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* @throws InternalServerErrorException
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*/
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public static function addVisitorCookieForHTTPSigner(): array
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public static function addVisitorCookieForHTTPSigner(array $server): array
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{
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$requester = HTTPSignature::getSigner('', $_SERVER);
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$requester = HTTPSignature::getSigner('', $server);
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if (empty($requester)) {
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return [];
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}
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@ -77,7 +77,7 @@ class Photo extends BaseApi
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throw new NotModifiedException();
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}
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Profile::addVisitorCookieForHTTPSigner();
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Profile::addVisitorCookieForHTTPSigner($this->server);
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$customsize = 0;
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$square_resize = true;
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@ -685,22 +685,28 @@ audio {
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.imagegrid-row {
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display: -ms-flexbox; /* IE10 */
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display: flex;
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margin-top: 1em;
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/* Both the following values should be the same to ensure consistent margins between images in the grid */
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column-gap: 5px;
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margin-top: 5px;
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}
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.imagegrid-column {
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-ms-flex: 50%; /* IE10 */
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flex: 50%;
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display: -ms-flexbox; /* IE10 */
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display: flex;
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flex-direction: column;
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row-gap: 5px;
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/* This helps allocating space for image before they loaded, preventing content shifting once they are
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* Inspired by https://www.smashingmagazine.com/2016/08/ways-to-reduce-content-shifting-on-page-load/
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* Please note: The space is effectively allocated using padding-bottom using the image ratio as a value.
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* In the image grid, this ratio isn't known in advance so no value is set in the stylesheet.
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*/
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figure.img-allocated-height {
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position: relative;
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background: center / auto rgba(0, 0, 0, 0.05) url(/images/icons/image.png) no-repeat;
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margin: 0;
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}
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.imagegrid-column img {
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-ms-flex: 50%; /* IE10 */
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flex: 50%;
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figure.img-allocated-height img{
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position: absolute;
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top: 0;
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right: 0;
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bottom: 0;
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left: 0;
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width: 100%;
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}
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/**
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* Image grid settings END
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@ -1,5 +1,20 @@
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{{if $image.preview}}
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<a data-fancybox="{{$image.uri_id}}" href="{{$image.attachment.url}}"><img src="{{$image.preview}}" alt="{{$image.attachment.description}}" title="{{$image.attachment.description}}"></a>
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{{else}}
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<img src="{{$image.src}}" alt="{{$image.attachment.description}}" title="{{$image.attachment.description}}">
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{{* The padding-top height allocation trick only works if the <figure> fills its parent's width completely or with flex. 🤷♂️
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As a result, we need to add a wrapping element for non-flex (non-image grid) environments, mostly single-image cases.
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*}}
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{{if $allocated_max_width}}
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<div style="max-width: {{$allocated_max_width|default:"auto"}};">
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{{/if}}
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<figure class="img-allocated-height" style="width: {{$allocated_width|default:"auto"}}; padding-bottom: {{$allocated_height}}">
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{{if $image.preview}}
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<a data-fancybox="{{$image.uri_id}}" href="{{$image.attachment.url}}">
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<img src="{{$image.preview}}" alt="{{$image.attachment.description}}" title="{{$image.attachment.description}}">
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</a>
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{{else}}
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<img src="{{$image.src}}" alt="{{$image.attachment.description}}" title="{{$image.attachment.description}}">
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{{/if}}
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</figure>
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{{if $allocated_max_width}}
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</div>
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{{/if}}
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@ -1,12 +1,12 @@
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<div class="imagegrid-row">
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<div class="imagegrid-column">
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{{foreach $columns.fc as $img}}
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{{include file="content/image.tpl" image=$img}}
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{{/foreach}}
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{{foreach $rows as $images}}
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<div class="imagegrid-row" style="height: {{$images[0].commonHeightRatio}}%">
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{{foreach $images as $image}}
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{{* The absolute pixel value in the calc() should be mirrored from the .imagegrid-row column-gap value *}}
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{{include file="content/image.tpl"
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image=$image
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allocated_height="calc(`$image.heightRatio * $image.widthRatio / 100`% - 5px / `$column_size`)"
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allocated_width="`$image.widthRatio`%"
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}}
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{{/foreach}}
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</div>
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<div class="imagegrid-column">
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{{foreach $columns.sc as $img}}
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{{include file="content/image.tpl" image=$img}}
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{{/foreach}}
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</div>
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</div>
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{{/foreach}}
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@ -394,3 +394,7 @@ input[type="text"].tt-input {
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textarea#profile-jot-text:focus + #preview_profile-jot-text, textarea.comment-edit-text:focus + .comment-edit-form .preview {
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border-color: $link_color;
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}
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figure.img-allocated-height {
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background-color: rgba(255, 255, 255, 0.15);
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}
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@ -354,3 +354,7 @@ input[type="text"].tt-input {
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textarea#profile-jot-text:focus + #preview_profile-jot-text, textarea.comment-edit-text:focus + .comment-edit-form .preview {
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border-color: $link_color;
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}
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figure.img-allocated-height {
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background-color: rgba(255, 255, 255, 0.05);
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}
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@ -240,10 +240,10 @@
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{{if $item.ignore}}
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<li role="menuitem">
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<a id="ignore-{{$item.id}}" href="javascript:doIgnoreThread({{$item.id}});" class="btn-link {{$item.ignore.classdo}}" title="{{$item.ignore.do}}"><i class="fa fa-eye-slash" aria-hidden="true"></i> {{$item.ignore.do}}</a>
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<a id="ignore-{{$item.id}}" href="javascript:doIgnoreThread({{$item.id}});" class="btn-link {{$item.ignore.classdo}}" title="{{$item.ignore.do}}"><i class="fa fa-bell-slash" aria-hidden="true"></i> {{$item.ignore.do}}</a>
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</li>
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<li role="menuitem">
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<a id="unignore-{{$item.id}}" href="javascript:doIgnoreThread({{$item.id}});" class="btn-link {{$item.ignore.classundo}}" title="{{$item.ignore.undo}}"><i class="fa fa-eye" aria-hidden="true"></i> {{$item.ignore.undo}}</a>
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<a id="unignore-{{$item.id}}" href="javascript:doIgnoreThread({{$item.id}});" class="btn-link {{$item.ignore.classundo}}" title="{{$item.ignore.undo}}"><i class="fa fa-bell" aria-hidden="true"></i> {{$item.ignore.undo}}</a>
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</li>
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{{/if}}
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@ -381,10 +381,10 @@ as the value of $top_child_total (this is done at the end of this file)
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{{if $item.ignore}}
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<li role="menuitem">
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<a id="ignore-{{$item.id}}" href="javascript:doIgnoreThread({{$item.id}});" class="btn-link {{$item.ignore.classdo}}" title="{{$item.ignore.do}}"><i class="fa fa-eye-slash" aria-hidden="true"></i> {{$item.ignore.do}}</a>
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<a id="ignore-{{$item.id}}" href="javascript:doIgnoreThread({{$item.id}});" class="btn-link {{$item.ignore.classdo}}" title="{{$item.ignore.do}}"><i class="fa fa-bell-slash" aria-hidden="true"></i> {{$item.ignore.do}}</a>
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</li>
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<li role="menuitem">
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<a id="unignore-{{$item.id}}" href="javascript:doIgnoreThread({{$item.id}});" class="btn-link {{$item.ignore.classundo}}" title="{{$item.ignore.undo}}"><i class="fa fa-eye" aria-hidden="true"></i> {{$item.ignore.undo}}</a>
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<a id="unignore-{{$item.id}}" href="javascript:doIgnoreThread({{$item.id}});" class="btn-link {{$item.ignore.classundo}}" title="{{$item.ignore.undo}}"><i class="fa fa-bell" aria-hidden="true"></i> {{$item.ignore.undo}}</a>
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</li>
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{{/if}}
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@ -560,10 +560,10 @@ as the value of $top_child_total (this is done at the end of this file)
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{{if $item.ignore}}
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<li role="menuitem">
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<a id="ignore-{{$item.id}}" href="javascript:doIgnoreThread({{$item.id}});" class="btn-link {{$item.ignore.classdo}}" title="{{$item.ignore.do}}"><i class="fa fa-eye-slash" aria-hidden="true"></i> {{$item.ignore.do}}</a>
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<a id="ignore-{{$item.id}}" href="javascript:doIgnoreThread({{$item.id}});" class="btn-link {{$item.ignore.classdo}}" title="{{$item.ignore.do}}"><i class="fa fa-bell-slash" aria-hidden="true"></i> {{$item.ignore.do}}</a>
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</li>
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<li role="menuitem">
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<a id="unignore-{{$item.id}}" href="javascript:doIgnoreThread({{$item.id}});" class="btn-link {{$item.ignore.classundo}}" title="{{$item.ignore.undo}}"><i class="fa fa-eye" aria-hidden="true"></i> {{$item.ignore.undo}}</a>
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<a id="unignore-{{$item.id}}" href="javascript:doIgnoreThread({{$item.id}});" class="btn-link {{$item.ignore.classundo}}" title="{{$item.ignore.undo}}"><i class="fa fa-bell" aria-hidden="true"></i> {{$item.ignore.undo}}</a>
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</li>
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{{/if}}
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