96 lines
2.8 KiB
PHP
96 lines
2.8 KiB
PHP
<?php
|
|
/**
|
|
* 获取文章缩略图地址
|
|
*/
|
|
function Bing_post_thumbnail_url( $post = null ){
|
|
$post = get_post( $post );
|
|
|
|
if( has_post_thumbnail( $post->ID ) ){
|
|
$thumbnail_ID = get_post_thumbnail_id( $post->ID );
|
|
$thumbnail = wp_get_attachment_image_src( $thumbnail_ID, 'full' );
|
|
$url = $thumbnail[0];
|
|
}
|
|
|
|
if( empty( $url ) ){
|
|
preg_match_all( '/<img.+src=[\'"]([^\'"]+)[\'"].*>/i', $post->post_content, $content_images );
|
|
|
|
if( !empty( $content_images[1][0] ) )
|
|
$url = $content_images[1][0];
|
|
}
|
|
|
|
if( empty( $url ) )
|
|
$url = get_template_directory_uri() . '/images/random/' . substr( $post->ID, -1, 1 ) . '.png';
|
|
|
|
return apply_filters( 'theme_thumbnail_url', $url, $post );
|
|
}
|
|
|
|
/**
|
|
* 裁剪缩略图
|
|
*
|
|
* @since Unknown
|
|
* @since Beginning 4.0.1 改为使用 JPG 格式的图片，同时修改图片命名规则。
|
|
*
|
|
* @uses wp_get_image_editor()
|
|
* @uses image_resize_dimensions()
|
|
*/
|
|
function Bing_crop_thumbnail( $url, $width, $height = null ) {
|
|
$width = (int) $width;
|
|
$height = empty( $height ) ? $width : (int) $height;
|
|
|
|
if ( ( $pre = apply_filters( 'pre_theme_crop_thumbnail', null, $url, $width, $height ) ) !== null )
|
|
return $pre;
|
|
|
|
$hash = md5( $url );
|
|
|
|
$short_hash = base_convert( $hash, 16, 32 );
|
|
$short_hash = substr( $hash, 0, 12 );
|
|
|
|
$file_path = WP_CONTENT_DIR . THEME_THUMBNAIL_PATH . "/{$short_hash}-{$width}x{$height}.jpg";
|
|
$file_url = content_url( THEME_THUMBNAIL_PATH . "/{$short_hash}-{$width}x{$height}.jpg" );
|
|
|
|
// 优先使用新版缩略图
|
|
if ( is_file( $file_path ) )
|
|
return $file_url;
|
|
|
|
// 再来检测是否存在旧版缩略图
|
|
if ( is_file( WP_CONTENT_DIR . THEME_THUMBNAIL_PATH . "/$hash-$width-$height.png" ) )
|
|
return content_url( THEME_THUMBNAIL_PATH . "/$hash-$width-$height.png" );
|
|
|
|
$editor = wp_get_image_editor( $url );
|
|
|
|
if ( is_wp_error( $editor ) )
|
|
return $url;
|
|
|
|
$size = $editor->get_size();
|
|
if ( !$dims = image_resize_dimensions( $size['width'], $size['height'], $width, $height, true ) )
|
|
return $url;
|
|
|
|
$cmp_x = $size['width'] / $width;
|
|
$cmp_y = $size['height'] / $height;
|
|
$cmp = min( $cmp_x, $cmp_y );
|
|
$min_width = round( $width * $cmp );
|
|
$min_height = round( $height * $cmp );
|
|
|
|
$crop = $editor->crop( $dims[2], $dims[3], $min_width, $min_height, $width, $height );
|
|
|
|
if( is_wp_error( $crop ) )
|
|
return $url;
|
|
|
|
Bing_build_empty_index( WP_CONTENT_DIR . THEME_THUMBNAIL_PATH );
|
|
|
|
$save = $editor->save( $file_path, 'image/jpeg' );
|
|
|
|
if ( is_wp_error( $save ) ) {
|
|
$result = $url;
|
|
$filter = 'theme_crop_thumbnail_error';
|
|
} else {
|
|
$result = $file_url;
|
|
$filter = 'theme_crop_thumbnail';
|
|
}
|
|
|
|
$args = array_values( compact( 'result', 'width', 'height', 'url' ) );
|
|
return apply_filters_deprecated( $filter, $args, '4.0.1', 'pre_theme_crop_thumbnail' );
|
|
}
|
|
|
|
//End of page.
|