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Improvements to image quality handling in the image editor classes.

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props markoheijnen, DH-Shredder.
fixes #25721.


git-svn-id: https://develop.svn.wordpress.org/trunk@26645 602fd350-edb4-49c9-b593-d223f7449a82
This commit is contained in:
Andrew Nacin
2013-12-04 22:48:45 +00:00
parent 22738bc3d5
commit 8a3c33c861
3 changed files with 70 additions and 23 deletions
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36
src/wp-includes/class-wp-image-editor.php
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@@ -205,19 +205,45 @@ abstract class WP_Image_Editor {
* @access public
*
* @param int $quality Compression Quality. Range: [1,100]
* @return boolean
* @return boolean|WP_Error True if set successfully; WP_Error on failure.
*/
public function set_quality( $quality ) {
public function set_quality( $quality = null ) {
if ( $quality == null ) {
$quality = $this->quality;
}
/**
* Filter the default quality setting.
*
* @since 3.5.0
*
* @param int $quality Quality level between 0 (low) and 100 (high).
* @param int $quality Quality level between 1 (low) and 100 (high).
*/
$this->quality = apply_filters( 'wp_editor_set_quality', $quality );
$quality = apply_filters( 'wp_editor_set_quality', $quality, $this->mime_type );
return ( (bool) $this->quality );
/**
* Filter the JPEG quality for backwards compatibilty.
*
* @since 2.5.0
*
* @param int $quality Quality level between 0 (low) and 100 (high) of the JPEG.
* @param string The context of the filter.
*/
if ( 'image/jpeg' == $this->mime_type ) {
$quality = apply_filters( 'jpeg_quality', $quality, 'image_resize' );
// Allow 0, but squash to 1 due to identical images in GD, and for backwards compatibility.
if ( $quality == 0 ) {
$quality = 1;
}
}
if ( ( $quality >= 1 ) && ( $quality <= 100 ) ){
$this->quality = $quality;
return true;
} else {
return new WP_Error( 'invalid_image_quality', __('Attempted to set image quality outside of the range [1,100].') );
}
}
/**