Source
File: wp-includes/widgets/class-wp-widget-media-image.php
public function render_media( $instance ) {
$instance = array_merge( wp_list_pluck( $this->get_instance_schema(), 'default' ), $instance );
$instance = wp_parse_args(
$instance,
array(
'size' => 'thumbnail',
)
);
$attachment = null;
if ( $this->is_attachment_with_mime_type( $instance['attachment_id'], $this->widget_options['mime_type'] ) ) {
$attachment = get_post( $instance['attachment_id'] );
}
if ( $attachment ) {
$caption = '';
if ( ! isset( $instance['caption'] ) ) {
$caption = $attachment->post_excerpt;
} elseif ( trim( $instance['caption'] ) ) {
$caption = $instance['caption'];
}
$image_attributes = array(
'class' => sprintf( 'image wp-image-%d %s', $attachment->ID, $instance['image_classes'] ),
'style' => 'max-width: 100%; height: auto;',
);
if ( ! empty( $instance['image_title'] ) ) {
$image_attributes['title'] = $instance['image_title'];
}
if ( $instance['alt'] ) {
$image_attributes['alt'] = $instance['alt'];
}
$size = $instance['size'];
if ( 'custom' === $size || ! in_array( $size, array_merge( get_intermediate_image_sizes(), array( 'full' ) ), true ) ) {
$size = array( $instance['width'], $instance['height'] );
$width = $instance['width'];
} else {
$caption_size = _wp_get_image_size_from_meta( $instance['size'], wp_get_attachment_metadata( $attachment->ID ) );
$width = empty( $caption_size[0] ) ? 0 : $caption_size[0];
}
$image_attributes['class'] .= sprintf( ' attachment-%1$s size-%1$s', is_array( $size ) ? join( 'x', $size ) : $size );
$image = wp_get_attachment_image( $attachment->ID, $size, false, $image_attributes );
} else {
if ( empty( $instance['url'] ) ) {
return;
}
$instance['size'] = 'custom';
$caption = $instance['caption'];
$width = $instance['width'];
$classes = 'image ' . $instance['image_classes'];
if ( 0 === $instance['width'] ) {
$instance['width'] = '';
}
if ( 0 === $instance['height'] ) {
$instance['height'] = '';
}
$image = sprintf(
'<img class="%1$s" src="%2$s" alt="%3$s" width="%4$s" height="%5$s" />',
esc_attr( $classes ),
esc_url( $instance['url'] ),
esc_attr( $instance['alt'] ),
esc_attr( $instance['width'] ),
esc_attr( $instance['height'] )
);
} // End if().
$url = '';
if ( 'file' === $instance['link_type'] ) {
$url = $attachment ? wp_get_attachment_url( $attachment->ID ) : $instance['url'];
} elseif ( $attachment && 'post' === $instance['link_type'] ) {
$url = get_attachment_link( $attachment->ID );
} elseif ( 'custom' === $instance['link_type'] && ! empty( $instance['link_url'] ) ) {
$url = $instance['link_url'];
}
if ( $url ) {
$link = sprintf( '<a href="%s"', esc_url( $url ) );
if ( ! empty( $instance['link_classes'] ) ) {
$link .= sprintf( ' class="%s"', esc_attr( $instance['link_classes'] ) );
}
if ( ! empty( $instance['link_rel'] ) ) {
$link .= sprintf( ' rel="%s"', esc_attr( $instance['link_rel'] ) );
}
if ( ! empty( $instance['link_target_blank'] ) ) {
$link .= ' target="_blank"';
}
$link .= '>';
$link .= $image;
$link .= '</a>';
$image = wp_targeted_link_rel( $link );
}
if ( $caption ) {
$image = img_caption_shortcode(
array(
'width' => $width,
'caption' => $caption,
),
$image
);
}
echo $image;
}