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The best way to understand what a hook does is to look at where it occurs in the source code.
do_action( "hook_name" )
apply_filters( "hook_name", "what_to_filter" )
.Remember, this hook may occur in more than one file. Moreover, the hook's context may change from version to version.
Line | Code |
---|---|
399 | if ( $did_width && $w == $max_width - 1 ) { |
400 | $w = $max_width; // Round it up |
401 | } |
402 |
|
403 | // Note: $did_height means it is possible $smaller_ratio == $height_ratio. |
404 | if ( $did_height && $h == $max_height - 1 ) { |
405 | $h = $max_height; // Round it up |
406 | } |
407 |
|
408 | return apply_filters( 'wp_constrain_dimensions', array( $w, $h ), $current_width, $current_height, $max_width, $max_height ); |
409 | } |
410 |
|
411 | /** |
412 | * Retrieve calculated resize dimensions for use in WP_Image_Editor. |
413 | * |
414 | * Calculates dimensions and coordinates for a resized image that fits |
415 | * within a specified width and height. |
416 | * |
417 | * Cropping behavior is dependent on the value of $crop: |