|
1
|
|
|
<?php |
|
2
|
|
|
|
|
3
|
|
|
class Jetpack_Photon { |
|
4
|
|
|
/** |
|
5
|
|
|
* Class variables |
|
6
|
|
|
*/ |
|
7
|
|
|
// Oh look, a singleton |
|
8
|
|
|
private static $__instance = null; |
|
9
|
|
|
|
|
10
|
|
|
// Allowed extensions must match http://code.trac.wordpress.org/browser/photon/index.php#L31 |
|
11
|
|
|
protected static $extensions = array( |
|
12
|
|
|
'gif', |
|
13
|
|
|
'jpg', |
|
14
|
|
|
'jpeg', |
|
15
|
|
|
'png' |
|
16
|
|
|
); |
|
17
|
|
|
|
|
18
|
|
|
// Don't access this directly. Instead, use self::image_sizes() so it's actually populated with something. |
|
19
|
|
|
protected static $image_sizes = null; |
|
20
|
|
|
|
|
21
|
|
|
/** |
|
22
|
|
|
* Singleton implementation |
|
23
|
|
|
* |
|
24
|
|
|
* @return object |
|
25
|
|
|
*/ |
|
26
|
|
|
public static function instance() { |
|
27
|
|
|
if ( ! is_a( self::$__instance, 'Jetpack_Photon' ) ) { |
|
28
|
|
|
self::$__instance = new Jetpack_Photon; |
|
29
|
|
|
self::$__instance->setup(); |
|
30
|
|
|
} |
|
31
|
|
|
|
|
32
|
|
|
return self::$__instance; |
|
33
|
|
|
} |
|
34
|
|
|
|
|
35
|
|
|
/** |
|
36
|
|
|
* Silence is golden. |
|
37
|
|
|
*/ |
|
38
|
|
|
private function __construct() {} |
|
39
|
|
|
|
|
40
|
|
|
/** |
|
41
|
|
|
* Register actions and filters, but only if basic Photon functions are available. |
|
42
|
|
|
* The basic functions are found in ./functions.photon.php. |
|
43
|
|
|
* |
|
44
|
|
|
* @uses add_action, add_filter |
|
45
|
|
|
* @return null |
|
46
|
|
|
*/ |
|
47
|
|
|
private function setup() { |
|
48
|
|
|
if ( ! function_exists( 'jetpack_photon_url' ) ) |
|
49
|
|
|
return; |
|
50
|
|
|
|
|
51
|
|
|
// Images in post content and galleries |
|
52
|
|
|
add_filter( 'the_content', array( __CLASS__, 'filter_the_content' ), 999999 ); |
|
53
|
|
|
add_filter( 'get_post_galleries', array( __CLASS__, 'filter_the_galleries' ), 999999 ); |
|
54
|
|
|
|
|
55
|
|
|
// Core image retrieval |
|
56
|
|
|
add_filter( 'image_downsize', array( $this, 'filter_image_downsize' ), 10, 3 ); |
|
57
|
|
|
|
|
58
|
|
|
// Responsive image srcset substitution |
|
59
|
|
|
add_filter( 'wp_calculate_image_srcset', array( $this, 'filter_srcset_array' ), 10, 4 ); |
|
60
|
|
|
add_filter( 'wp_calculate_image_sizes', array( $this, 'filter_sizes' ), 1, 2 ); // Early so themes can still easily filter. |
|
61
|
|
|
|
|
62
|
|
|
// Helpers for maniuplated images |
|
63
|
|
|
add_action( 'wp_enqueue_scripts', array( $this, 'action_wp_enqueue_scripts' ), 9 ); |
|
64
|
|
|
} |
|
65
|
|
|
|
|
66
|
|
|
/** |
|
67
|
|
|
** IN-CONTENT IMAGE MANIPULATION FUNCTIONS |
|
68
|
|
|
**/ |
|
69
|
|
|
|
|
70
|
|
|
/** |
|
71
|
|
|
* Match all images and any relevant <a> tags in a block of HTML. |
|
72
|
|
|
* |
|
73
|
|
|
* @param string $content Some HTML. |
|
74
|
|
|
* @return array An array of $images matches, where $images[0] is |
|
75
|
|
|
* an array of full matches, and the link_url, img_tag, |
|
76
|
|
|
* and img_url keys are arrays of those matches. |
|
77
|
|
|
*/ |
|
78
|
|
|
public static function parse_images_from_html( $content ) { |
|
79
|
|
|
$images = array(); |
|
80
|
|
|
|
|
81
|
|
|
if ( preg_match_all( '#(?:<a[^>]+?href=["|\'](?P<link_url>[^\s]+?)["|\'][^>]*?>\s*)?(?P<img_tag><img[^>]*?\s+?src=["|\'](?P<img_url>[^\s]+?)["|\'].*?>){1}(?:\s*</a>)?#is', $content, $images ) ) { |
|
82
|
|
|
foreach ( $images as $key => $unused ) { |
|
83
|
|
|
// Simplify the output as much as possible, mostly for confirming test results. |
|
84
|
|
|
if ( is_numeric( $key ) && $key > 0 ) |
|
85
|
|
|
unset( $images[$key] ); |
|
86
|
|
|
} |
|
87
|
|
|
|
|
88
|
|
|
return $images; |
|
89
|
|
|
} |
|
90
|
|
|
|
|
91
|
|
|
return array(); |
|
92
|
|
|
} |
|
93
|
|
|
|
|
94
|
|
|
/** |
|
95
|
|
|
* Try to determine height and width from strings WP appends to resized image filenames. |
|
96
|
|
|
* |
|
97
|
|
|
* @param string $src The image URL. |
|
98
|
|
|
* @return array An array consisting of width and height. |
|
99
|
|
|
*/ |
|
100
|
|
|
public static function parse_dimensions_from_filename( $src ) { |
|
101
|
|
|
$width_height_string = array(); |
|
102
|
|
|
|
|
103
|
|
|
if ( preg_match( '#-(\d+)x(\d+)\.(?:' . implode('|', self::$extensions ) . '){1}$#i', $src, $width_height_string ) ) { |
|
104
|
|
|
$width = (int) $width_height_string[1]; |
|
105
|
|
|
$height = (int) $width_height_string[2]; |
|
106
|
|
|
|
|
107
|
|
|
if ( $width && $height ) |
|
108
|
|
|
return array( $width, $height ); |
|
109
|
|
|
} |
|
110
|
|
|
|
|
111
|
|
|
return array( false, false ); |
|
112
|
|
|
} |
|
113
|
|
|
|
|
114
|
|
|
/** |
|
115
|
|
|
* Identify images in post content, and if images are local (uploaded to the current site), pass through Photon. |
|
116
|
|
|
* |
|
117
|
|
|
* @param string $content |
|
118
|
|
|
* @uses self::validate_image_url, apply_filters, jetpack_photon_url, esc_url |
|
119
|
|
|
* @filter the_content |
|
120
|
|
|
* @return string |
|
121
|
|
|
*/ |
|
122
|
|
|
public static function filter_the_content( $content ) { |
|
123
|
|
|
$images = Jetpack_Photon::parse_images_from_html( $content ); |
|
124
|
|
|
|
|
125
|
|
|
if ( ! empty( $images ) ) { |
|
126
|
|
|
$content_width = Jetpack::get_content_width(); |
|
127
|
|
|
|
|
128
|
|
|
$image_sizes = self::image_sizes(); |
|
129
|
|
|
$upload_dir = wp_upload_dir(); |
|
130
|
|
|
|
|
131
|
|
|
foreach ( $images[0] as $index => $tag ) { |
|
132
|
|
|
// Default to resize, though fit may be used in certain cases where a dimension cannot be ascertained |
|
133
|
|
|
$transform = 'resize'; |
|
134
|
|
|
|
|
135
|
|
|
// Start with a clean attachment ID each time |
|
136
|
|
|
$attachment_id = false; |
|
137
|
|
|
|
|
138
|
|
|
// Flag if we need to munge a fullsize URL |
|
139
|
|
|
$fullsize_url = false; |
|
140
|
|
|
|
|
141
|
|
|
// Identify image source |
|
142
|
|
|
$src = $src_orig = $images['img_url'][ $index ]; |
|
143
|
|
|
|
|
144
|
|
|
/** |
|
145
|
|
|
* Allow specific images to be skipped by Photon. |
|
146
|
|
|
* |
|
147
|
|
|
* @module photon |
|
148
|
|
|
* |
|
149
|
|
|
* @since 2.0.3 |
|
150
|
|
|
* |
|
151
|
|
|
* @param bool false Should Photon ignore this image. Default to false. |
|
152
|
|
|
* @param string $src Image URL. |
|
153
|
|
|
* @param string $tag Image Tag (Image HTML output). |
|
154
|
|
|
*/ |
|
155
|
|
|
if ( apply_filters( 'jetpack_photon_skip_image', false, $src, $tag ) ) |
|
156
|
|
|
continue; |
|
157
|
|
|
|
|
158
|
|
|
// Support Automattic's Lazy Load plugin |
|
159
|
|
|
// Can't modify $tag yet as we need unadulterated version later |
|
160
|
|
|
if ( preg_match( '#data-lazy-src=["|\'](.+?)["|\']#i', $images['img_tag'][ $index ], $lazy_load_src ) ) { |
|
161
|
|
|
$placeholder_src = $placeholder_src_orig = $src; |
|
162
|
|
|
$src = $src_orig = $lazy_load_src[1]; |
|
163
|
|
|
} elseif ( preg_match( '#data-lazy-original=["|\'](.+?)["|\']#i', $images['img_tag'][ $index ], $lazy_load_src ) ) { |
|
164
|
|
|
$placeholder_src = $placeholder_src_orig = $src; |
|
165
|
|
|
$src = $src_orig = $lazy_load_src[1]; |
|
166
|
|
|
} |
|
167
|
|
|
|
|
168
|
|
|
// Check if image URL should be used with Photon |
|
169
|
|
|
if ( self::validate_image_url( $src ) ) { |
|
170
|
|
|
// Find the width and height attributes |
|
171
|
|
|
$width = $height = false; |
|
172
|
|
|
|
|
173
|
|
|
// First, check the image tag |
|
174
|
|
|
if ( preg_match( '#width=["|\']?([\d%]+)["|\']?#i', $images['img_tag'][ $index ], $width_string ) ) |
|
175
|
|
|
$width = $width_string[1]; |
|
176
|
|
|
|
|
177
|
|
|
if ( preg_match( '#height=["|\']?([\d%]+)["|\']?#i', $images['img_tag'][ $index ], $height_string ) ) |
|
178
|
|
|
$height = $height_string[1]; |
|
179
|
|
|
|
|
180
|
|
|
// Can't pass both a relative width and height, so unset the height in favor of not breaking the horizontal layout. |
|
181
|
|
|
if ( false !== strpos( $width, '%' ) && false !== strpos( $height, '%' ) ) |
|
182
|
|
|
$width = $height = false; |
|
183
|
|
|
|
|
184
|
|
|
// Detect WP registered image size from HTML class |
|
185
|
|
|
if ( preg_match( '#class=["|\']?[^"\']*size-([^"\'\s]+)[^"\']*["|\']?#i', $images['img_tag'][ $index ], $size ) ) { |
|
186
|
|
|
$size = array_pop( $size ); |
|
187
|
|
|
|
|
188
|
|
|
if ( false === $width && false === $height && 'full' != $size && array_key_exists( $size, $image_sizes ) ) { |
|
189
|
|
|
$width = (int) $image_sizes[ $size ]['width']; |
|
190
|
|
|
$height = (int) $image_sizes[ $size ]['height']; |
|
191
|
|
|
$transform = $image_sizes[ $size ]['crop'] ? 'resize' : 'fit'; |
|
192
|
|
|
} |
|
193
|
|
|
} else { |
|
194
|
|
|
unset( $size ); |
|
195
|
|
|
} |
|
196
|
|
|
|
|
197
|
|
|
// WP Attachment ID, if uploaded to this site |
|
198
|
|
|
if ( |
|
199
|
|
|
preg_match( '#class=["|\']?[^"\']*wp-image-([\d]+)[^"\']*["|\']?#i', $images['img_tag'][ $index ], $attachment_id ) && |
|
200
|
|
|
( |
|
201
|
|
|
0 === strpos( $src, $upload_dir['baseurl'] ) || |
|
202
|
|
|
/** |
|
203
|
|
|
* Filter whether an image using an attachment ID in its class has to be uploaded to the local site to go through Photon. |
|
204
|
|
|
* |
|
205
|
|
|
* @module photon |
|
206
|
|
|
* |
|
207
|
|
|
* @since 2.0.3 |
|
208
|
|
|
* |
|
209
|
|
|
* @param bool false Was the image uploaded to the local site. Default to false. |
|
210
|
|
|
* @param array $args { |
|
211
|
|
|
* Array of image details. |
|
212
|
|
|
* |
|
213
|
|
|
* @type $src Image URL. |
|
214
|
|
|
* @type tag Image tag (Image HTML output). |
|
215
|
|
|
* @type $images Array of information about the image. |
|
216
|
|
|
* @type $index Image index. |
|
217
|
|
|
* } |
|
218
|
|
|
*/ |
|
219
|
|
|
apply_filters( 'jetpack_photon_image_is_local', false, compact( 'src', 'tag', 'images', 'index' ) ) |
|
220
|
|
|
) |
|
221
|
|
|
) { |
|
222
|
|
|
$attachment_id = intval( array_pop( $attachment_id ) ); |
|
223
|
|
|
|
|
224
|
|
|
if ( $attachment_id ) { |
|
225
|
|
|
$attachment = get_post( $attachment_id ); |
|
226
|
|
|
|
|
227
|
|
|
// Basic check on returned post object |
|
228
|
|
|
if ( is_object( $attachment ) && ! is_wp_error( $attachment ) && 'attachment' == $attachment->post_type ) { |
|
229
|
|
|
$src_per_wp = wp_get_attachment_image_src( $attachment_id, isset( $size ) ? $size : 'full' ); |
|
230
|
|
|
|
|
231
|
|
|
if ( self::validate_image_url( $src_per_wp[0] ) ) { |
|
232
|
|
|
$src = $src_per_wp[0]; |
|
233
|
|
|
$fullsize_url = true; |
|
234
|
|
|
|
|
235
|
|
|
// Prevent image distortion if a detected dimension exceeds the image's natural dimensions |
|
236
|
|
|
if ( ( false !== $width && $width > $src_per_wp[1] ) || ( false !== $height && $height > $src_per_wp[2] ) ) { |
|
237
|
|
|
$width = false == $width ? false : min( $width, $src_per_wp[1] ); |
|
238
|
|
|
$height = false == $height ? false : min( $height, $src_per_wp[2] ); |
|
239
|
|
|
} |
|
240
|
|
|
|
|
241
|
|
|
// If no width and height are found, max out at source image's natural dimensions |
|
242
|
|
|
// Otherwise, respect registered image sizes' cropping setting |
|
243
|
|
|
if ( false == $width && false == $height ) { |
|
244
|
|
|
$width = $src_per_wp[1]; |
|
245
|
|
|
$height = $src_per_wp[2]; |
|
246
|
|
|
$transform = 'fit'; |
|
247
|
|
|
} elseif ( isset( $size ) && array_key_exists( $size, $image_sizes ) && isset( $image_sizes[ $size ]['crop'] ) ) { |
|
248
|
|
|
$transform = (bool) $image_sizes[ $size ]['crop'] ? 'resize' : 'fit'; |
|
249
|
|
|
} |
|
250
|
|
|
} |
|
251
|
|
|
} else { |
|
252
|
|
|
unset( $attachment_id ); |
|
253
|
|
|
unset( $attachment ); |
|
254
|
|
|
} |
|
255
|
|
|
} |
|
256
|
|
|
} |
|
257
|
|
|
|
|
258
|
|
|
// If image tag lacks width and height arguments, try to determine from strings WP appends to resized image filenames. |
|
259
|
|
|
if ( false === $width && false === $height ) { |
|
260
|
|
|
list( $width, $height ) = Jetpack_Photon::parse_dimensions_from_filename( $src ); |
|
261
|
|
|
} |
|
262
|
|
|
|
|
263
|
|
|
// If width is available, constrain to $content_width |
|
264
|
|
|
if ( false !== $width && false === strpos( $width, '%' ) && is_numeric( $content_width ) ) { |
|
265
|
|
|
if ( $width > $content_width && false !== $height && false === strpos( $height, '%' ) ) { |
|
266
|
|
|
$height = round( ( $content_width * $height ) / $width ); |
|
267
|
|
|
$width = $content_width; |
|
268
|
|
|
} elseif ( $width > $content_width ) { |
|
269
|
|
|
$width = $content_width; |
|
270
|
|
|
} |
|
271
|
|
|
} |
|
272
|
|
|
|
|
273
|
|
|
// Set a width if none is found and $content_width is available |
|
274
|
|
|
// If width is set in this manner and height is available, use `fit` instead of `resize` to prevent skewing |
|
275
|
|
|
if ( false === $width && is_numeric( $content_width ) ) { |
|
276
|
|
|
$width = (int) $content_width; |
|
277
|
|
|
|
|
278
|
|
|
if ( false !== $height ) |
|
279
|
|
|
$transform = 'fit'; |
|
280
|
|
|
} |
|
281
|
|
|
|
|
282
|
|
|
// Detect if image source is for a custom-cropped thumbnail and prevent further URL manipulation. |
|
283
|
|
|
if ( ! $fullsize_url && preg_match_all( '#-e[a-z0-9]+(-\d+x\d+)?\.(' . implode('|', self::$extensions ) . '){1}$#i', basename( $src ), $filename ) ) |
|
284
|
|
|
$fullsize_url = true; |
|
285
|
|
|
|
|
286
|
|
|
// Build URL, first maybe removing WP's resized string so we pass the original image to Photon |
|
287
|
|
|
if ( ! $fullsize_url ) { |
|
288
|
|
|
$src = self::strip_image_dimensions_maybe( $src ); |
|
289
|
|
|
} |
|
290
|
|
|
|
|
291
|
|
|
// Build array of Photon args and expose to filter before passing to Photon URL function |
|
292
|
|
|
$args = array(); |
|
293
|
|
|
|
|
294
|
|
|
if ( false !== $width && false !== $height && false === strpos( $width, '%' ) && false === strpos( $height, '%' ) ) |
|
295
|
|
|
$args[ $transform ] = $width . ',' . $height; |
|
296
|
|
|
elseif ( false !== $width ) |
|
297
|
|
|
$args['w'] = $width; |
|
298
|
|
|
elseif ( false !== $height ) |
|
299
|
|
|
$args['h'] = $height; |
|
300
|
|
|
|
|
301
|
|
|
/** |
|
302
|
|
|
* Filter the array of Photon arguments added to an image when it goes through Photon. |
|
303
|
|
|
* By default, only includes width and height values. |
|
304
|
|
|
* @see https://developer.wordpress.com/docs/photon/api/ |
|
305
|
|
|
* |
|
306
|
|
|
* @module photon |
|
307
|
|
|
* |
|
308
|
|
|
* @since 2.0.0 |
|
309
|
|
|
* |
|
310
|
|
|
* @param array $args Array of Photon Arguments. |
|
311
|
|
|
* @param array $args { |
|
312
|
|
|
* Array of image details. |
|
313
|
|
|
* |
|
314
|
|
|
* @type $tag Image tag (Image HTML output). |
|
315
|
|
|
* @type $src Image URL. |
|
316
|
|
|
* @type $src_orig Original Image URL. |
|
317
|
|
|
* @type $width Image width. |
|
318
|
|
|
* @type $height Image height. |
|
319
|
|
|
* } |
|
320
|
|
|
*/ |
|
321
|
|
|
$args = apply_filters( 'jetpack_photon_post_image_args', $args, compact( 'tag', 'src', 'src_orig', 'width', 'height' ) ); |
|
322
|
|
|
|
|
323
|
|
|
$photon_url = jetpack_photon_url( $src, $args ); |
|
324
|
|
|
|
|
325
|
|
|
// Modify image tag if Photon function provides a URL |
|
326
|
|
|
// Ensure changes are only applied to the current image by copying and modifying the matched tag, then replacing the entire tag with our modified version. |
|
327
|
|
|
if ( $src != $photon_url ) { |
|
328
|
|
|
$new_tag = $tag; |
|
329
|
|
|
|
|
330
|
|
|
// If present, replace the link href with a Photoned URL for the full-size image. |
|
331
|
|
|
if ( ! empty( $images['link_url'][ $index ] ) && self::validate_image_url( $images['link_url'][ $index ] ) ) |
|
332
|
|
|
$new_tag = preg_replace( '#(href=["|\'])' . $images['link_url'][ $index ] . '(["|\'])#i', '\1' . jetpack_photon_url( $images['link_url'][ $index ] ) . '\2', $new_tag, 1 ); |
|
333
|
|
|
|
|
334
|
|
|
// Supplant the original source value with our Photon URL |
|
335
|
|
|
$photon_url = esc_url( $photon_url ); |
|
336
|
|
|
$new_tag = str_replace( $src_orig, $photon_url, $new_tag ); |
|
337
|
|
|
|
|
338
|
|
|
// If Lazy Load is in use, pass placeholder image through Photon |
|
339
|
|
|
if ( isset( $placeholder_src ) && self::validate_image_url( $placeholder_src ) ) { |
|
340
|
|
|
$placeholder_src = jetpack_photon_url( $placeholder_src ); |
|
341
|
|
|
|
|
342
|
|
|
if ( $placeholder_src != $placeholder_src_orig ) |
|
343
|
|
|
$new_tag = str_replace( $placeholder_src_orig, esc_url( $placeholder_src ), $new_tag ); |
|
|
|
|
|
|
344
|
|
|
|
|
345
|
|
|
unset( $placeholder_src ); |
|
346
|
|
|
} |
|
347
|
|
|
|
|
348
|
|
|
// Remove the width and height arguments from the tag to prevent distortion |
|
349
|
|
|
$new_tag = preg_replace( '#(?<=\s)(width|height)=["|\']?[\d%]+["|\']?\s?#i', '', $new_tag ); |
|
350
|
|
|
|
|
351
|
|
|
// Tag an image for dimension checking |
|
352
|
|
|
$new_tag = preg_replace( '#(\s?/)?>(\s*</a>)?$#i', ' data-recalc-dims="1"\1>\2', $new_tag ); |
|
353
|
|
|
|
|
354
|
|
|
// Replace original tag with modified version |
|
355
|
|
|
$content = str_replace( $tag, $new_tag, $content ); |
|
356
|
|
|
} |
|
357
|
|
|
} elseif ( preg_match( '#^http(s)?://i[\d]{1}.wp.com#', $src ) && ! empty( $images['link_url'][ $index ] ) && self::validate_image_url( $images['link_url'][ $index ] ) ) { |
|
358
|
|
|
$new_tag = preg_replace( '#(href=["|\'])' . $images['link_url'][ $index ] . '(["|\'])#i', '\1' . jetpack_photon_url( $images['link_url'][ $index ] ) . '\2', $tag, 1 ); |
|
359
|
|
|
|
|
360
|
|
|
$content = str_replace( $tag, $new_tag, $content ); |
|
361
|
|
|
} |
|
362
|
|
|
} |
|
363
|
|
|
} |
|
364
|
|
|
|
|
365
|
|
|
return $content; |
|
366
|
|
|
} |
|
367
|
|
|
|
|
368
|
|
|
public static function filter_the_galleries( $galleries ) { |
|
369
|
|
|
if ( empty( $galleries ) || ! is_array( $galleries ) ) { |
|
370
|
|
|
return $galleries; |
|
371
|
|
|
} |
|
372
|
|
|
|
|
373
|
|
|
// Pass by reference, so we can modify them in place. |
|
374
|
|
|
foreach ( $galleries as &$this_gallery ) { |
|
375
|
|
|
if ( is_string( $this_gallery ) ) { |
|
376
|
|
|
$this_gallery = self::filter_the_content( $this_gallery ); |
|
377
|
|
|
// LEAVING COMMENTED OUT as for the moment it doesn't seem |
|
378
|
|
|
// necessary and I'm not sure how it would propagate through. |
|
379
|
|
|
// } elseif ( is_array( $this_gallery ) |
|
380
|
|
|
// && ! empty( $this_gallery['src'] ) |
|
381
|
|
|
// && ! empty( $this_gallery['type'] ) |
|
382
|
|
|
// && in_array( $this_gallery['type'], array( 'rectangle', 'square', 'circle' ) ) ) { |
|
383
|
|
|
// $this_gallery['src'] = array_map( 'jetpack_photon_url', $this_gallery['src'] ); |
|
384
|
|
|
} |
|
385
|
|
|
} |
|
386
|
|
|
unset( $this_gallery ); // break the reference. |
|
387
|
|
|
|
|
388
|
|
|
return $galleries; |
|
389
|
|
|
} |
|
390
|
|
|
|
|
391
|
|
|
/** |
|
392
|
|
|
** CORE IMAGE RETRIEVAL |
|
393
|
|
|
**/ |
|
394
|
|
|
|
|
395
|
|
|
/** |
|
396
|
|
|
* Filter post thumbnail image retrieval, passing images through Photon |
|
397
|
|
|
* |
|
398
|
|
|
* @param string|bool $image |
|
399
|
|
|
* @param int $attachment_id |
|
400
|
|
|
* @param string|array $size |
|
401
|
|
|
* @uses is_admin, apply_filters, wp_get_attachment_url, self::validate_image_url, this::image_sizes, jetpack_photon_url |
|
402
|
|
|
* @filter image_downsize |
|
403
|
|
|
* @return string|bool |
|
404
|
|
|
*/ |
|
405
|
|
|
public function filter_image_downsize( $image, $attachment_id, $size ) { |
|
406
|
|
|
// Don't foul up the admin side of things, and provide plugins a way of preventing Photon from being applied to images. |
|
407
|
|
|
if ( |
|
408
|
|
|
is_admin() || |
|
409
|
|
|
/** |
|
410
|
|
|
* Provide plugins a way of preventing Photon from being applied to images retrieved from WordPress Core. |
|
411
|
|
|
* |
|
412
|
|
|
* @module photon |
|
413
|
|
|
* |
|
414
|
|
|
* @since 2.0.0 |
|
415
|
|
|
* |
|
416
|
|
|
* @param bool false Stop Photon from being applied to the image. Default to false. |
|
417
|
|
|
* @param array $args { |
|
418
|
|
|
* Array of image details. |
|
419
|
|
|
* |
|
420
|
|
|
* @type $image Image URL. |
|
421
|
|
|
* @type $attachment_id Attachment ID of the image. |
|
422
|
|
|
* @type $size Image size. Can be a string (name of the image size, e.g. full) or an integer. |
|
423
|
|
|
* } |
|
424
|
|
|
*/ |
|
425
|
|
|
apply_filters( 'jetpack_photon_override_image_downsize', false, compact( 'image', 'attachment_id', 'size' ) ) |
|
426
|
|
|
) |
|
427
|
|
|
return $image; |
|
428
|
|
|
|
|
429
|
|
|
// Get the image URL and proceed with Photon-ification if successful |
|
430
|
|
|
$image_url = wp_get_attachment_url( $attachment_id ); |
|
431
|
|
|
|
|
432
|
|
|
// Set this to true later when we know we have size meta. |
|
433
|
|
|
$has_size_meta = false; |
|
434
|
|
|
|
|
435
|
|
|
if ( $image_url ) { |
|
436
|
|
|
// Check if image URL should be used with Photon |
|
437
|
|
|
if ( ! self::validate_image_url( $image_url ) ) |
|
438
|
|
|
return $image; |
|
439
|
|
|
|
|
440
|
|
|
$intermediate = true; // For the fourth array item returned by the image_downsize filter. |
|
441
|
|
|
|
|
442
|
|
|
// If an image is requested with a size known to WordPress, use that size's settings with Photon |
|
443
|
|
|
if ( ( is_string( $size ) || is_int( $size ) ) && array_key_exists( $size, self::image_sizes() ) ) { |
|
444
|
|
|
$image_args = self::image_sizes(); |
|
445
|
|
|
$image_args = $image_args[ $size ]; |
|
446
|
|
|
|
|
447
|
|
|
$photon_args = array(); |
|
448
|
|
|
|
|
449
|
|
|
$image_meta = image_get_intermediate_size( $attachment_id, $size ); |
|
450
|
|
|
|
|
451
|
|
|
// 'full' is a special case: We need consistent data regardless of the requested size. |
|
452
|
|
|
if ( 'full' == $size ) { |
|
453
|
|
|
$image_meta = wp_get_attachment_metadata( $attachment_id ); |
|
454
|
|
|
$intermediate = false; |
|
455
|
|
|
} elseif ( ! $image_meta ) { |
|
456
|
|
|
// If we still don't have any image meta at this point, it's probably from a custom thumbnail size |
|
457
|
|
|
// for an image that was uploaded before the custom image was added to the theme. Try to determine the size manually. |
|
458
|
|
|
$image_meta = wp_get_attachment_metadata( $attachment_id ); |
|
459
|
|
|
|
|
460
|
|
View Code Duplication |
if ( isset( $image_meta['width'], $image_meta['height'] ) ) { |
|
461
|
|
|
$image_resized = image_resize_dimensions( $image_meta['width'], $image_meta['height'], $image_args['width'], $image_args['height'], $image_args['crop'] ); |
|
462
|
|
|
if ( $image_resized ) { // This could be false when the requested image size is larger than the full-size image. |
|
463
|
|
|
$image_meta['width'] = $image_resized[6]; |
|
464
|
|
|
$image_meta['height'] = $image_resized[7]; |
|
465
|
|
|
} |
|
466
|
|
|
} |
|
467
|
|
|
} |
|
468
|
|
|
|
|
469
|
|
View Code Duplication |
if ( isset( $image_meta['width'], $image_meta['height'] ) ) { |
|
470
|
|
|
$image_args['width'] = $image_meta['width']; |
|
471
|
|
|
$image_args['height'] = $image_meta['height']; |
|
472
|
|
|
|
|
473
|
|
|
list( $image_args['width'], $image_args['height'] ) = image_constrain_size_for_editor( $image_args['width'], $image_args['height'], $size, 'display' ); |
|
474
|
|
|
$has_size_meta = true; |
|
475
|
|
|
} |
|
476
|
|
|
|
|
477
|
|
|
// Expose determined arguments to a filter before passing to Photon |
|
478
|
|
|
$transform = $image_args['crop'] ? 'resize' : 'fit'; |
|
479
|
|
|
|
|
480
|
|
|
// Check specified image dimensions and account for possible zero values; photon fails to resize if a dimension is zero. |
|
481
|
|
|
if ( 0 == $image_args['width'] || 0 == $image_args['height'] ) { |
|
482
|
|
|
if ( 0 == $image_args['width'] && 0 < $image_args['height'] ) { |
|
483
|
|
|
$photon_args['h'] = $image_args['height']; |
|
484
|
|
|
} elseif ( 0 == $image_args['height'] && 0 < $image_args['width'] ) { |
|
485
|
|
|
$photon_args['w'] = $image_args['width']; |
|
486
|
|
|
} |
|
487
|
|
|
} else { |
|
488
|
|
|
if ( ( 'resize' === $transform ) && $image_meta = wp_get_attachment_metadata( $attachment_id ) ) { |
|
489
|
|
|
if ( isset( $image_meta['width'], $image_meta['height'] ) ) { |
|
490
|
|
|
// Lets make sure that we don't upscale images since wp never upscales them as well |
|
491
|
|
|
$smaller_width = ( ( $image_meta['width'] < $image_args['width'] ) ? $image_meta['width'] : $image_args['width'] ); |
|
492
|
|
|
$smaller_height = ( ( $image_meta['height'] < $image_args['height'] ) ? $image_meta['height'] : $image_args['height'] ); |
|
493
|
|
|
|
|
494
|
|
|
$photon_args[ $transform ] = $smaller_width . ',' . $smaller_height; |
|
495
|
|
|
} |
|
496
|
|
|
} else { |
|
497
|
|
|
$photon_args[ $transform ] = $image_args['width'] . ',' . $image_args['height']; |
|
498
|
|
|
} |
|
499
|
|
|
|
|
500
|
|
|
} |
|
501
|
|
|
|
|
502
|
|
|
|
|
503
|
|
|
/** |
|
504
|
|
|
* Filter the Photon Arguments added to an image when going through Photon, when that image size is a string. |
|
505
|
|
|
* Image size will be a string (e.g. "full", "medium") when it is known to WordPress. |
|
506
|
|
|
* |
|
507
|
|
|
* @module photon |
|
508
|
|
|
* |
|
509
|
|
|
* @since 2.0.0 |
|
510
|
|
|
* |
|
511
|
|
|
* @param array $photon_args Array of Photon arguments. |
|
512
|
|
|
* @param array $args { |
|
513
|
|
|
* Array of image details. |
|
514
|
|
|
* |
|
515
|
|
|
* @type $image_args Array of Image arguments (width, height, crop). |
|
516
|
|
|
* @type $image_url Image URL. |
|
517
|
|
|
* @type $attachment_id Attachment ID of the image. |
|
518
|
|
|
* @type $size Image size. Can be a string (name of the image size, e.g. full) or an integer. |
|
519
|
|
|
* @type $transform Value can be resize or fit. |
|
520
|
|
|
* @see https://developer.wordpress.com/docs/photon/api |
|
521
|
|
|
* } |
|
522
|
|
|
*/ |
|
523
|
|
|
$photon_args = apply_filters( 'jetpack_photon_image_downsize_string', $photon_args, compact( 'image_args', 'image_url', 'attachment_id', 'size', 'transform' ) ); |
|
524
|
|
|
|
|
525
|
|
|
// Generate Photon URL |
|
526
|
|
|
$image = array( |
|
527
|
|
|
jetpack_photon_url( $image_url, $photon_args ), |
|
528
|
|
|
$has_size_meta ? $image_args['width'] : false, |
|
529
|
|
|
$has_size_meta ? $image_args['height'] : false, |
|
530
|
|
|
$intermediate |
|
531
|
|
|
); |
|
532
|
|
|
} elseif ( is_array( $size ) ) { |
|
533
|
|
|
// Pull width and height values from the provided array, if possible |
|
534
|
|
|
$width = isset( $size[0] ) ? (int) $size[0] : false; |
|
535
|
|
|
$height = isset( $size[1] ) ? (int) $size[1] : false; |
|
536
|
|
|
|
|
537
|
|
|
// Don't bother if necessary parameters aren't passed. |
|
538
|
|
|
if ( ! $width || ! $height ) { |
|
|
|
|
|
|
539
|
|
|
return $image; |
|
540
|
|
|
} |
|
541
|
|
|
|
|
542
|
|
|
$image_meta = wp_get_attachment_metadata( $attachment_id ); |
|
543
|
|
|
if ( isset( $image_meta['width'], $image_meta['height'] ) ) { |
|
544
|
|
|
$image_resized = image_resize_dimensions( $image_meta['width'], $image_meta['height'], $width, $height ); |
|
545
|
|
|
|
|
546
|
|
|
if ( $image_resized ) { // This could be false when the requested image size is larger than the full-size image. |
|
547
|
|
|
$width = $image_resized[6]; |
|
548
|
|
|
$height = $image_resized[7]; |
|
549
|
|
|
} else { |
|
550
|
|
|
$width = $image_meta['width']; |
|
551
|
|
|
$height = $image_meta['height']; |
|
552
|
|
|
} |
|
553
|
|
|
|
|
554
|
|
|
$has_size_meta = true; |
|
555
|
|
|
} |
|
556
|
|
|
|
|
557
|
|
|
list( $width, $height ) = image_constrain_size_for_editor( $width, $height, $size ); |
|
558
|
|
|
|
|
559
|
|
|
// Expose arguments to a filter before passing to Photon |
|
560
|
|
|
$photon_args = array( |
|
561
|
|
|
'fit' => $width . ',' . $height |
|
562
|
|
|
); |
|
563
|
|
|
|
|
564
|
|
|
/** |
|
565
|
|
|
* Filter the Photon Arguments added to an image when going through Photon, |
|
566
|
|
|
* when the image size is an array of height and width values. |
|
567
|
|
|
* |
|
568
|
|
|
* @module photon |
|
569
|
|
|
* |
|
570
|
|
|
* @since 2.0.0 |
|
571
|
|
|
* |
|
572
|
|
|
* @param array $photon_args Array of Photon arguments. |
|
573
|
|
|
* @param array $args { |
|
574
|
|
|
* Array of image details. |
|
575
|
|
|
* |
|
576
|
|
|
* @type $width Image width. |
|
577
|
|
|
* @type height Image height. |
|
578
|
|
|
* @type $image_url Image URL. |
|
579
|
|
|
* @type $attachment_id Attachment ID of the image. |
|
580
|
|
|
* } |
|
581
|
|
|
*/ |
|
582
|
|
|
$photon_args = apply_filters( 'jetpack_photon_image_downsize_array', $photon_args, compact( 'width', 'height', 'image_url', 'attachment_id' ) ); |
|
583
|
|
|
|
|
584
|
|
|
// Generate Photon URL |
|
585
|
|
|
$image = array( |
|
586
|
|
|
jetpack_photon_url( $image_url, $photon_args ), |
|
587
|
|
|
$has_size_meta ? $width : false, |
|
588
|
|
|
$has_size_meta ? $height : false, |
|
589
|
|
|
$intermediate |
|
590
|
|
|
); |
|
591
|
|
|
} |
|
592
|
|
|
} |
|
593
|
|
|
|
|
594
|
|
|
return $image; |
|
595
|
|
|
} |
|
596
|
|
|
|
|
597
|
|
|
/** |
|
598
|
|
|
* Filters an array of image `srcset` values, replacing each URL with its Photon equivalent. |
|
599
|
|
|
* |
|
600
|
|
|
* @since 3.8.0 |
|
601
|
|
|
* @since 4.0.4 Added automatically additional sizes beyond declared image sizes. |
|
602
|
|
|
* @param array $sources An array of image urls and widths. |
|
603
|
|
|
* @uses self::validate_image_url, jetpack_photon_url, Jetpack_Photon::parse_from_filename |
|
604
|
|
|
* @uses Jetpack_Photon::strip_image_dimensions_maybe, Jetpack::get_content_width |
|
605
|
|
|
* @return array An array of Photon image urls and widths. |
|
606
|
|
|
*/ |
|
607
|
|
|
public function filter_srcset_array( $sources, $size_array, $image_src, $image_meta ) { |
|
608
|
|
|
$upload_dir = wp_upload_dir(); |
|
609
|
|
|
|
|
610
|
|
|
foreach ( $sources as $i => $source ) { |
|
611
|
|
|
if ( ! self::validate_image_url( $source['url'] ) ) { |
|
612
|
|
|
continue; |
|
613
|
|
|
} |
|
614
|
|
|
|
|
615
|
|
|
$url = $source['url']; |
|
616
|
|
|
list( $width, $height ) = Jetpack_Photon::parse_dimensions_from_filename( $url ); |
|
617
|
|
|
|
|
618
|
|
|
// It's quicker to get the full size with the data we have already, if available |
|
619
|
|
|
if ( isset( $image_meta['file'] ) ) { |
|
620
|
|
|
$url = trailingslashit( $upload_dir['baseurl'] ) . $image_meta['file']; |
|
621
|
|
|
} else { |
|
622
|
|
|
$url = Jetpack_Photon::strip_image_dimensions_maybe( $url ); |
|
623
|
|
|
} |
|
624
|
|
|
|
|
625
|
|
|
$args = array(); |
|
626
|
|
|
if ( 'w' === $source['descriptor'] ) { |
|
627
|
|
|
if ( $height && ( $source['value'] == $width ) ) { |
|
628
|
|
|
$args['resize'] = $width . ',' . $height; |
|
629
|
|
|
} else { |
|
630
|
|
|
$args['w'] = $source['value']; |
|
631
|
|
|
} |
|
632
|
|
|
|
|
633
|
|
|
} |
|
634
|
|
|
|
|
635
|
|
|
$sources[ $i ]['url'] = jetpack_photon_url( $url, $args ); |
|
636
|
|
|
} |
|
637
|
|
|
|
|
638
|
|
|
/** |
|
639
|
|
|
* At this point, $sources is the original srcset with Photonized URLs. |
|
640
|
|
|
* Now, we're going to construct additional sizes based on multiples of the content_width. |
|
641
|
|
|
* This will reduce the gap between the largest defined size and the original image. |
|
642
|
|
|
*/ |
|
643
|
|
|
|
|
644
|
|
|
/** |
|
645
|
|
|
* Filter the multiplier Photon uses to create new srcset items. |
|
646
|
|
|
* Return false to short-circuit and bypass auto-generation. |
|
647
|
|
|
* |
|
648
|
|
|
* @module photon |
|
649
|
|
|
* |
|
650
|
|
|
* @since 4.0.4 |
|
651
|
|
|
* |
|
652
|
|
|
* @param array|bool $multipliers Array of multipliers to use or false to bypass. |
|
653
|
|
|
*/ |
|
654
|
|
|
$multipliers = apply_filters( 'jetpack_photon_srcset_multipliers', array( 2, 3 ) ); |
|
655
|
|
|
|
|
656
|
|
|
if ( is_array( $multipliers ) // Short-circuit via jetpack_photon_srcset_multipliers filter. |
|
657
|
|
|
&& isset( $image_meta['width'] ) && isset( $image_meta['height'] ) && isset( $image_meta['file'] ) // Verify basic meta is intact. |
|
658
|
|
|
&& isset( $size_array[0] ) && isset( $size_array[1] ) // Verify we have the requested width/height. |
|
659
|
|
|
) { |
|
660
|
|
|
|
|
661
|
|
|
$url = trailingslashit( $upload_dir['baseurl'] ) . $image_meta['file']; |
|
662
|
|
|
$fullwidth = $image_meta['width']; |
|
663
|
|
|
$fullheight = $image_meta['height']; |
|
664
|
|
|
$reqwidth = $size_array[0]; |
|
665
|
|
|
$reqheight = $size_array[1]; |
|
666
|
|
|
|
|
667
|
|
|
$constrained_size = wp_constrain_dimensions( $fullwidth, $fullheight, $reqwidth ); |
|
668
|
|
|
$expected_size = array( $reqwidth, $reqheight ); |
|
669
|
|
|
|
|
670
|
|
|
if ( abs( $constrained_size[0] - $expected_size[0] ) <= 1 && abs( $constrained_size[1] - $expected_size[1] ) <= 1 ) { |
|
671
|
|
|
$crop = 'soft'; |
|
672
|
|
|
$base = Jetpack::get_content_width() ? Jetpack::get_content_width() : 1000; // Provide a default width if none set by the theme. |
|
673
|
|
|
} |
|
674
|
|
|
else { |
|
675
|
|
|
$crop = 'hard'; |
|
676
|
|
|
$base = $reqwidth; |
|
677
|
|
|
} |
|
678
|
|
|
|
|
679
|
|
|
|
|
680
|
|
|
$currentwidths = array_keys( $sources ); |
|
681
|
|
|
$newsources = null; |
|
682
|
|
|
|
|
683
|
|
|
foreach ( $multipliers as $multiplier ) { |
|
684
|
|
|
$newwidth = $base * $multiplier; |
|
685
|
|
|
foreach ( $currentwidths as $currentwidth ){ |
|
686
|
|
|
// If a new width would be within 100 pixes of an existing one or larger than the full size image, skip. |
|
687
|
|
|
if ( abs( $currentwidth - $newwidth ) < 50 || ( $newwidth > $fullwidth ) ) { |
|
688
|
|
|
continue 2; // Back to the foreach ( $multipliers as $multiplier ) |
|
689
|
|
|
} |
|
690
|
|
|
} // foreach ( $currentwidths as $currentwidth ){ |
|
691
|
|
|
|
|
692
|
|
|
if ( 'soft' == $crop ) { |
|
693
|
|
|
$args = array( |
|
694
|
|
|
'w' => $newwidth, |
|
695
|
|
|
); |
|
696
|
|
|
} |
|
697
|
|
|
else { // hard crop, e.g. add_image_size( 'example', 200, 200, true ); |
|
698
|
|
|
$args = array( |
|
699
|
|
|
'zoom' => $multiplier, |
|
700
|
|
|
'resize' => $reqwidth . ',' . $reqheight, |
|
701
|
|
|
); |
|
702
|
|
|
} |
|
703
|
|
|
|
|
704
|
|
|
$newsources[ $newwidth ] = array( |
|
705
|
|
|
'url' => jetpack_photon_url( $url, $args ), |
|
706
|
|
|
'descriptor' => 'w', |
|
707
|
|
|
'value' => $newwidth, |
|
708
|
|
|
); |
|
709
|
|
|
} // foreach ( $multipliers as $multiplier ) |
|
710
|
|
|
if ( is_array( $newsources ) ) { |
|
711
|
|
|
$sources = array_merge( $sources, $newsources ); |
|
712
|
|
|
} |
|
713
|
|
|
} // if ( isset( $image_meta['width'] ) && isset( $image_meta['file'] ) ) |
|
714
|
|
|
|
|
715
|
|
|
return $sources; |
|
716
|
|
|
} |
|
717
|
|
|
|
|
718
|
|
|
/** |
|
719
|
|
|
* Filters an array of image `sizes` values, using $content_width instead of image's full size. |
|
720
|
|
|
* |
|
721
|
|
|
* @since 4.0.4 |
|
722
|
|
|
* @since 4.1.0 Returns early for images not within the_content. |
|
723
|
|
|
* @param array $sizes An array of media query breakpoints. |
|
724
|
|
|
* @param array $size Width and height of the image |
|
725
|
|
|
* @uses Jetpack::get_content_width |
|
726
|
|
|
* @return array An array of media query breakpoints. |
|
727
|
|
|
*/ |
|
728
|
|
|
public function filter_sizes( $sizes, $size ) { |
|
729
|
|
|
if ( ! doing_filter( 'the_content' ) ){ |
|
730
|
|
|
return $sizes; |
|
731
|
|
|
} |
|
732
|
|
|
$content_width = Jetpack::get_content_width(); |
|
733
|
|
|
if ( ! $content_width ) { |
|
734
|
|
|
$content_width = 1000; |
|
735
|
|
|
} |
|
736
|
|
|
|
|
737
|
|
|
if ( ( is_array( $size ) && $size[0] < $content_width ) ) { |
|
738
|
|
|
return $sizes; |
|
739
|
|
|
} |
|
740
|
|
|
|
|
741
|
|
|
return sprintf( '(max-width: %1$dpx) 100vw, %1$dpx', $content_width ); |
|
742
|
|
|
} |
|
743
|
|
|
|
|
744
|
|
|
/** |
|
745
|
|
|
** GENERAL FUNCTIONS |
|
746
|
|
|
**/ |
|
747
|
|
|
|
|
748
|
|
|
/** |
|
749
|
|
|
* Ensure image URL is valid for Photon. |
|
750
|
|
|
* Though Photon functions address some of the URL issues, we should avoid unnecessary processing if we know early on that the image isn't supported. |
|
751
|
|
|
* |
|
752
|
|
|
* @param string $url |
|
753
|
|
|
* @uses wp_parse_args |
|
754
|
|
|
* @return bool |
|
755
|
|
|
*/ |
|
756
|
|
|
protected static function validate_image_url( $url ) { |
|
757
|
|
|
$parsed_url = @parse_url( $url ); |
|
758
|
|
|
|
|
759
|
|
|
if ( ! $parsed_url ) |
|
760
|
|
|
return false; |
|
761
|
|
|
|
|
762
|
|
|
// Parse URL and ensure needed keys exist, since the array returned by `parse_url` only includes the URL components it finds. |
|
763
|
|
|
$url_info = wp_parse_args( $parsed_url, array( |
|
764
|
|
|
'scheme' => null, |
|
765
|
|
|
'host' => null, |
|
766
|
|
|
'port' => null, |
|
767
|
|
|
'path' => null |
|
768
|
|
|
) ); |
|
769
|
|
|
|
|
770
|
|
|
// Bail if scheme isn't http or port is set that isn't port 80 |
|
771
|
|
|
if ( |
|
772
|
|
|
( 'http' != $url_info['scheme'] || ! in_array( $url_info['port'], array( 80, null ) ) ) && |
|
773
|
|
|
/** |
|
774
|
|
|
* Allow Photon to fetch images that are served via HTTPS. |
|
775
|
|
|
* |
|
776
|
|
|
* @module photon |
|
777
|
|
|
* |
|
778
|
|
|
* @since 2.4.0 |
|
779
|
|
|
* @since 3.9.0 Default to false. |
|
780
|
|
|
* |
|
781
|
|
|
* @param bool $reject_https Should Photon ignore images using the HTTPS scheme. Default to false. |
|
782
|
|
|
*/ |
|
783
|
|
|
apply_filters( 'jetpack_photon_reject_https', false ) |
|
784
|
|
|
) { |
|
785
|
|
|
return false; |
|
786
|
|
|
} |
|
787
|
|
|
|
|
788
|
|
|
// Bail if no host is found |
|
789
|
|
|
if ( is_null( $url_info['host'] ) ) |
|
790
|
|
|
return false; |
|
791
|
|
|
|
|
792
|
|
|
// Bail if the image alredy went through Photon |
|
793
|
|
|
if ( preg_match( '#^i[\d]{1}.wp.com$#i', $url_info['host'] ) ) |
|
794
|
|
|
return false; |
|
795
|
|
|
|
|
796
|
|
|
// Bail if no path is found |
|
797
|
|
|
if ( is_null( $url_info['path'] ) ) |
|
798
|
|
|
return false; |
|
799
|
|
|
|
|
800
|
|
|
// Ensure image extension is acceptable |
|
801
|
|
|
if ( ! in_array( strtolower( pathinfo( $url_info['path'], PATHINFO_EXTENSION ) ), self::$extensions ) ) |
|
802
|
|
|
return false; |
|
803
|
|
|
|
|
804
|
|
|
// If we got this far, we should have an acceptable image URL |
|
805
|
|
|
// But let folks filter to decline if they prefer. |
|
806
|
|
|
/** |
|
807
|
|
|
* Overwrite the results of the validation steps an image goes through before to be considered valid to be used by Photon. |
|
808
|
|
|
* |
|
809
|
|
|
* @module photon |
|
810
|
|
|
* |
|
811
|
|
|
* @since 3.0.0 |
|
812
|
|
|
* |
|
813
|
|
|
* @param bool true Is the image URL valid and can it be used by Photon. Default to true. |
|
814
|
|
|
* @param string $url Image URL. |
|
815
|
|
|
* @param array $parsed_url Array of information about the image. |
|
816
|
|
|
*/ |
|
817
|
|
|
return apply_filters( 'photon_validate_image_url', true, $url, $parsed_url ); |
|
818
|
|
|
} |
|
819
|
|
|
|
|
820
|
|
|
/** |
|
821
|
|
|
* Checks if the file exists before it passes the file to photon |
|
822
|
|
|
* |
|
823
|
|
|
* @param string $src The image URL |
|
824
|
|
|
* @return string |
|
825
|
|
|
**/ |
|
826
|
|
|
protected static function strip_image_dimensions_maybe( $src ){ |
|
827
|
|
|
$stripped_src = $src; |
|
|
|
|
|
|
828
|
|
|
|
|
829
|
|
|
// Build URL, first removing WP's resized string so we pass the original image to Photon |
|
830
|
|
|
if ( preg_match( '#(-\d+x\d+)\.(' . implode('|', self::$extensions ) . '){1}$#i', $src, $src_parts ) ) { |
|
831
|
|
|
$stripped_src = str_replace( $src_parts[1], '', $src ); |
|
832
|
|
|
$upload_dir = wp_upload_dir(); |
|
833
|
|
|
|
|
834
|
|
|
// Extracts the file path to the image minus the base url |
|
835
|
|
|
$file_path = substr( $stripped_src, strlen ( $upload_dir['baseurl'] ) ); |
|
836
|
|
|
|
|
837
|
|
|
if( file_exists( $upload_dir["basedir"] . $file_path ) ) |
|
838
|
|
|
$src = $stripped_src; |
|
839
|
|
|
} |
|
840
|
|
|
|
|
841
|
|
|
return $src; |
|
842
|
|
|
} |
|
843
|
|
|
|
|
844
|
|
|
/** |
|
845
|
|
|
* Provide an array of available image sizes and corresponding dimensions. |
|
846
|
|
|
* Similar to get_intermediate_image_sizes() except that it includes image sizes' dimensions, not just their names. |
|
847
|
|
|
* |
|
848
|
|
|
* @global $wp_additional_image_sizes |
|
849
|
|
|
* @uses get_option |
|
850
|
|
|
* @return array |
|
851
|
|
|
*/ |
|
852
|
|
|
protected static function image_sizes() { |
|
853
|
|
|
if ( null == self::$image_sizes ) { |
|
854
|
|
|
global $_wp_additional_image_sizes; |
|
855
|
|
|
|
|
856
|
|
|
// Populate an array matching the data structure of $_wp_additional_image_sizes so we have a consistent structure for image sizes |
|
857
|
|
|
$images = array( |
|
858
|
|
|
'thumb' => array( |
|
859
|
|
|
'width' => intval( get_option( 'thumbnail_size_w' ) ), |
|
860
|
|
|
'height' => intval( get_option( 'thumbnail_size_h' ) ), |
|
861
|
|
|
'crop' => (bool) get_option( 'thumbnail_crop' ) |
|
862
|
|
|
), |
|
863
|
|
|
'medium' => array( |
|
864
|
|
|
'width' => intval( get_option( 'medium_size_w' ) ), |
|
865
|
|
|
'height' => intval( get_option( 'medium_size_h' ) ), |
|
866
|
|
|
'crop' => false |
|
867
|
|
|
), |
|
868
|
|
|
'large' => array( |
|
869
|
|
|
'width' => intval( get_option( 'large_size_w' ) ), |
|
870
|
|
|
'height' => intval( get_option( 'large_size_h' ) ), |
|
871
|
|
|
'crop' => false |
|
872
|
|
|
), |
|
873
|
|
|
'full' => array( |
|
874
|
|
|
'width' => null, |
|
875
|
|
|
'height' => null, |
|
876
|
|
|
'crop' => false |
|
877
|
|
|
) |
|
878
|
|
|
); |
|
879
|
|
|
|
|
880
|
|
|
// Compatibility mapping as found in wp-includes/media.php |
|
881
|
|
|
$images['thumbnail'] = $images['thumb']; |
|
882
|
|
|
|
|
883
|
|
|
// Update class variable, merging in $_wp_additional_image_sizes if any are set |
|
884
|
|
|
if ( is_array( $_wp_additional_image_sizes ) && ! empty( $_wp_additional_image_sizes ) ) |
|
885
|
|
|
self::$image_sizes = array_merge( $images, $_wp_additional_image_sizes ); |
|
886
|
|
|
else |
|
887
|
|
|
self::$image_sizes = $images; |
|
888
|
|
|
} |
|
889
|
|
|
|
|
890
|
|
|
return is_array( self::$image_sizes ) ? self::$image_sizes : array(); |
|
891
|
|
|
} |
|
892
|
|
|
|
|
893
|
|
|
/** |
|
894
|
|
|
* Pass og:image URLs through Photon |
|
895
|
|
|
* |
|
896
|
|
|
* @param array $tags |
|
897
|
|
|
* @param array $parameters |
|
898
|
|
|
* @uses jetpack_photon_url |
|
899
|
|
|
* @return array |
|
900
|
|
|
*/ |
|
901
|
|
|
function filter_open_graph_tags( $tags, $parameters ) { |
|
902
|
|
|
if ( empty( $tags['og:image'] ) ) { |
|
903
|
|
|
return $tags; |
|
904
|
|
|
} |
|
905
|
|
|
|
|
906
|
|
|
$photon_args = array( |
|
907
|
|
|
'fit' => sprintf( '%d,%d', 2 * $parameters['image_width'], 2 * $parameters['image_height'] ), |
|
908
|
|
|
); |
|
909
|
|
|
|
|
910
|
|
|
if ( is_array( $tags['og:image'] ) ) { |
|
911
|
|
|
$images = array(); |
|
912
|
|
|
foreach ( $tags['og:image'] as $image ) { |
|
913
|
|
|
$images[] = jetpack_photon_url( $image, $photon_args ); |
|
914
|
|
|
} |
|
915
|
|
|
$tags['og:image'] = $images; |
|
916
|
|
|
} else { |
|
917
|
|
|
$tags['og:image'] = jetpack_photon_url( $tags['og:image'], $photon_args ); |
|
918
|
|
|
} |
|
919
|
|
|
|
|
920
|
|
|
return $tags; |
|
921
|
|
|
} |
|
922
|
|
|
|
|
923
|
|
|
/** |
|
924
|
|
|
* Enqueue Photon helper script |
|
925
|
|
|
* |
|
926
|
|
|
* @uses wp_enqueue_script, plugins_url |
|
927
|
|
|
* @action wp_enqueue_script |
|
928
|
|
|
* @return null |
|
929
|
|
|
*/ |
|
930
|
|
|
public function action_wp_enqueue_scripts() { |
|
931
|
|
|
wp_enqueue_script( 'jetpack-photon', plugins_url( 'modules/photon/photon.js', JETPACK__PLUGIN_FILE ), array( 'jquery' ), 20130122, true ); |
|
932
|
|
|
} |
|
933
|
|
|
} |
|
934
|
|
|
|
Automattic /
jetpack
Loading history...
If you define a variable conditionally, it can happen that it is not defined for all execution paths.
Let’s take a look at an example:
In the above example, the variable $x is defined if you pass “foo” or “bar” as argument for $a. However, since the switch statement has no default case statement, if you pass any other value, the variable $x would be undefined.
Available Fixes
Check for existence of the variable explicitly:
Define a default value for the variable:
Add a value for the missing path: