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Gallery Block: Fix equal column gallery image sizes #2534

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Gallery Block: Fix equal column gallery image sizes #2534

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39a6488
Fix equal column gallery image sizes
mukeshpanchal27 Jun 12, 2026
de04562
Set column count for image without columns set
mukeshpanchal27 Jun 12, 2026
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36 changes: 36 additions & 0 deletions plugins/auto-sizes/includes/improve-calculate-sizes.php
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Original file line number Diff line number Diff line change
Expand Up @@ -316,6 +316,7 @@ function auto_sizes_filter_uses_context( array $uses_context, WP_Block_Type $blo
'core/group' => array( 'max_alignment' ),
'core/columns' => array( 'max_alignment', 'column_count', 'container_relative_width' ),
'core/column' => array( 'max_alignment' ),
'core/gallery' => array( 'max_alignment', 'gallery_column_count', 'container_relative_width' ),
);

if ( isset( $block_specific_context[ $block_type->name ] ) ) {
Expand Down Expand Up @@ -344,6 +345,7 @@ function auto_sizes_filter_render_block_context( array $context, array $block, ?
'core/columns',
'core/group',
'core/post-featured-image',
'core/gallery',
);

if ( in_array( $block['blockName'], $provider_blocks, true ) ) {
Expand All @@ -355,6 +357,40 @@ function auto_sizes_filter_render_block_context( array $context, array $block, ?
$context['max_alignment'] = $constraints[ $context['max_alignment'] ] > $constraints[ $alignment ] ? $context['max_alignment'] : $alignment;
}

if ( 'core/gallery' === $block['blockName'] ) {
// Get column count, if explicitly set.
if ( isset( $block['attrs']['columns'] ) && '' !== $block['attrs']['columns'] ) {
$context['gallery_column_count'] = $block['attrs']['columns'] ?? '';
}

/*
* If column count is not explicitly set, use the number of inner blocks as a fallback,
* but only for up to 3 images to avoid incorrect context for larger galleries.
*/
$gallery_image_block_count = count( $block['innerBlocks'] );
if ( $gallery_image_block_count <= 3 ) {
$context['gallery_column_count'] = $gallery_image_block_count;
}
}

if ( 'core/image' === $block['blockName'] ) {
$current_width = 1.0;
if ( isset( $parent_block->context['gallery_column_count'] ) && $parent_block->context['gallery_column_count'] ) {
// Default to equally divided width if not explicitly set.
$current_width = $current_width / $parent_block->context['gallery_column_count'];
}

// Multiply with parent's width if available.
if (
isset( $parent_block->context['container_relative_width'] ) &&
( $current_width > 0.0 || $current_width < 1.0 )
) {
$context['container_relative_width'] = $parent_block->context['container_relative_width'] * $current_width;
} else {
$context['container_relative_width'] = $current_width;
}
}

if ( 'core/columns' === $block['blockName'] ) {
// This is a special context key just to pass to the child 'core/column' block.
$context['column_count'] = count( $block['innerBlocks'] );
Expand Down
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