bitPickups/friendica_2020-09-1_sharedHosting
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Add support for PNG images with alpha

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This commit is contained in:
Fabio Comuni 2012-06-07 17:42:13 +02:00
commit 7cc8c369cb
11 changed files with 215 additions and 70 deletions
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127
include/Photo.php
View file

@ -7,14 +7,34 @@ class Photo {
private $width;
private $height;
private $valid;
private $type;
private $types;
public function __construct($data) {
/**
* supported mimetypes and corresponding file extensions
*/
static function supportedTypes() {
$t = array();
$t['image/jpeg'] ='jpg';
if (imagetypes() & IMG_PNG) $t['image/png'] = 'png';
return $t;
}
public function __construct($data, $type="image/jpeg") {
$this->types = $this->supportedTypes();
if (!array_key_exists($type,$this->types)){
$type='image/jpeg';
}
$this->valid = false;
$this->type = $type;
$this->image = @imagecreatefromstring($data);
if($this->image !== FALSE) {
$this->width = imagesx($this->image);
$this->height = imagesy($this->image);
$this->valid = true;
imagealphablending($this->image, false);
imagesavealpha($this->image, true);
}
}
@ -38,6 +58,13 @@ class Photo {
public function getImage() {
return $this->image;
}
public function getType() {
return $this->type;
}
public function getExt() {
return $this->types[$this->type];
}
public function scaleImage($max) {
@ -78,6 +105,9 @@ class Photo {
$dest = imagecreatetruecolor( $dest_width, $dest_height );
imagealphablending($dest->image, false);
imagesavealpha($dest, true);
if ($this->type=='image/png') imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127));; // fill with alpha
imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dest_width, $dest_height, $width, $height);
if($this->image)
imagedestroy($this->image);
@ -134,6 +164,9 @@ class Photo {
$dest = imagecreatetruecolor( $dest_width, $dest_height );
imagealphablending($dest->image, false);
imagesavealpha($dest, true);
if ($this->type=='image/png') imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127));; // fill with alpha
imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dest_width, $dest_height, $width, $height);
if($this->image)
imagedestroy($this->image);
@ -148,6 +181,9 @@ class Photo {
public function scaleImageSquare($dim) {
$dest = imagecreatetruecolor( $dim, $dim );
imagealphablending($dest->image, false);
imagesavealpha($dest, true);
if ($this->type=='image/png') imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127));; // fill with alpha
imagecopyresampled($dest, $this->image, 0, 0, 0, 0, $dim, $dim, $this->width, $this->height);
if($this->image)
imagedestroy($this->image);
@ -159,6 +195,9 @@ class Photo {
public function cropImage($max,$x,$y,$w,$h) {
$dest = imagecreatetruecolor( $max, $max );
imagealphablending($dest->image, false);
imagesavealpha($dest, true);
if ($this->type=='image/png') imagefill($dest, 0, 0, imagecolorallocatealpha($dest, 0, 0, 0, 127));; // fill with alpha
imagecopyresampled($dest, $this->image, 0, 0, $x, $y, $max, $max, $w, $h);
if($this->image)
imagedestroy($this->image);
@ -168,20 +207,38 @@ class Photo {
}
public function saveImage($path) {
$quality = get_config('system','jpeg_quality');
if((! $quality) || ($quality > 100))
$quality = JPEG_QUALITY;
imagejpeg($this->image,$path,$quality);
switch($this->type){
case "image/png":
$quality = get_config('system','png_quality');
if((! $quality) || ($quality > 9))
$quality = PNG_QUALITY;
imagepng($this->image, $path, $quality);
break;
default:
$quality = get_config('system','jpeg_quality');
if((! $quality) || ($quality > 100))
$quality = JPEG_QUALITY;
imagejpeg($this->image,$path,$quality);
}
}
public function imageString() {
ob_start();
switch($this->type){
case "image/png":
$quality = get_config('system','png_quality');
if((! $quality) || ($quality > 9))
$quality = PNG_QUALITY;
imagepng($this->image,NULL, $quality);
break;
default:
$quality = get_config('system','jpeg_quality');
if((! $quality) || ($quality > 100))
$quality = JPEG_QUALITY;
$quality = get_config('system','jpeg_quality');
if((! $quality) || ($quality > 100))
$quality = JPEG_QUALITY;
imagejpeg($this->image,NULL,$quality);
imagejpeg($this->image,NULL,$quality);
}
$s = ob_get_contents();
ob_end_clean();
return $s;
@ -200,8 +257,8 @@ class Photo {
$guid = get_guid();
$r = q("INSERT INTO `photo`
( `uid`, `contact-id`, `guid`, `resource-id`, `created`, `edited`, `filename`, `album`, `height`, `width`, `data`, `scale`, `profile`, `allow_cid`, `allow_gid`, `deny_cid`, `deny_gid` )
VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', %d, %d, '%s', '%s', '%s', '%s' )",
( `uid`, `contact-id`, `guid`, `resource-id`, `created`, `edited`, `filename`, type, `album`, `height`, `width`, `data`, `scale`, `profile`, `allow_cid`, `allow_gid`, `deny_cid`, `deny_gid` )
VALUES ( %d, %d, '%s', '%s', '%s', '%s', '%s', '%s', '%s', %d, %d, '%s', %d, %d, '%s', '%s', '%s', '%s' )",
intval($uid),
intval($cid),
dbesc($guid),
@ -209,6 +266,7 @@ class Photo {
dbesc(datetime_convert()),
dbesc(datetime_convert()),
dbesc(basename($filename)),
dbesc($this->type),
dbesc($album),
intval($this->height),
intval($this->width),
@ -230,6 +288,38 @@ class Photo {
}}
/**
* Guess image mimetype from filename or from Content-Type header
*
* @arg $filename string Image filename
* @arg $fromcurl boolean Check Content-Type header from curl request
*/
function guess_image_type($filename, $fromcurl=false) {
$type = null;
if ($fromcurl) {
$a = get_app();
$headers=array();
$h = explode("\n",$a->get_curl_headers());
foreach ($h as $l) {
list($k,$v) = array_map("trim", explode(":", trim($l), 2));
$headers[$k] = $v;
}
if (array_key_exists('Content-Type', $headers))
$type = $headers['Content-Type'];
}
if (is_null($type)){
$ext = pathinfo($filename, PATHINFO_EXTENSION);
$types = Photo::supportedTypes();
foreach ($types as $m=>$e){
if ($ext==$e) return $m;
}
$type = "image/jpeg";
}
return $type;
}
function import_profile_photo($photo,$uid,$cid) {
$a = get_app();
@ -238,7 +328,12 @@ function import_profile_photo($photo,$uid,$cid) {
$filename = basename($photo);
$img_str = fetch_url($photo,true);
$img = new Photo($img_str);
// guess mimetype from headers or filename
$type = guess_image_type($photo,true);
$img = new Photo($img_str, $type);
if($img->is_valid()) {
$img->scaleImageSquare(175);
@ -266,9 +361,9 @@ function import_profile_photo($photo,$uid,$cid) {
$photo = $a->get_baseurl() . '/photo/' . $hash . '-4.jpg';
$thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.jpg';
$micro = $a->get_baseurl() . '/photo/' . $hash . '-6.jpg';
$photo = $a->get_baseurl() . '/photo/' . $hash . '-4.' . $img->getExt();
$thumb = $a->get_baseurl() . '/photo/' . $hash . '-5.' . $img->getExt();
$micro = $a->get_baseurl() . '/photo/' . $hash . '-6.' . $img->getExt();
}
else
$photo_failure = true;

12
include/items.php
View file

@ -1346,7 +1346,11 @@ function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0, $pass = 0)
}
$img_str = fetch_url($photo_url,true);
$img = new Photo($img_str);
// guess mimetype from headers or filename
$type = guess_image_type($photo_url,true);
$img = new Photo($img_str, $type);
if($img->is_valid()) {
if($have_photo) {
q("DELETE FROM `photo` WHERE `resource-id` = '%s' AND `contact-id` = %d AND `uid` = %d",
@ -1372,9 +1376,9 @@ function consume_feed($xml,$importer,&$contact, &$hub, $datedir = 0, $pass = 0)
q("UPDATE `contact` SET `avatar-date` = '%s', `photo` = '%s', `thumb` = '%s', `micro` = '%s'
WHERE `uid` = %d AND `id` = %d LIMIT 1",
dbesc(datetime_convert()),
dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.jpg'),
dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.jpg'),
dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.jpg'),
dbesc($a->get_baseurl() . '/photo/' . $hash . '-4.'.$img->getExt()),
dbesc($a->get_baseurl() . '/photo/' . $hash . '-5.'.$img->getExt()),
dbesc($a->get_baseurl() . '/photo/' . $hash . '-6.'.$img->getExt()),
intval($contact['uid']),
intval($contact['id'])
);

5
include/network.php
View file

@ -807,8 +807,11 @@ function scale_external_images($s,$include_link = true) {
if(stristr($mtch[1],$hostname))
continue;
$i = fetch_url($mtch[1]);
// guess mimetype from headers or filename
$type = guess_image_type($mtch[1],true);
if($i) {
$ph = new Photo($i);
$ph = new Photo($i, $type);
if($ph->is_valid()) {
$orig_width = $ph->getWidth();
$orig_height = $ph->getHeight();

8
include/user.php
View file

@ -284,7 +284,11 @@ function create_user($arr) {
$filename = basename($photo);
$img_str = fetch_url($photo,true);
$img = new Photo($img_str);
// guess mimetype from headers or filename
$type = guess_image_type($photo,true);
$img = new Photo($img_str, $type);
if($img->is_valid()) {
$img->scaleImageSquare(175);
@ -324,4 +328,4 @@ function create_user($arr) {
$result['user'] = $u;
return $result;
}
}