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File_thumbnail fixes (run scripts/upgrade.php)

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We're now capable of doing image rotation for thumbnails based on
EXIF orientation data. Also, thumbnails are tracked by filenames and
thus we can delete them from storage when we feel like it.
This commit is contained in:
Mikael Nordfeldth
2014-05-12 14:33:41 +02:00
parent cd3cff451f
commit 214a10ddec
4 changed files with 136 additions and 35 deletions
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49
classes/File.php
View File

@@ -235,7 +235,7 @@ class File extends Managed_DataObject
}
// Normalize and make the original filename more URL friendly.
$origname = basename($origname);
$origname = basename($origname, $ext);
if (class_exists('Normalizer')) {
// http://php.net/manual/en/class.normalizer.php
// http://www.unicode.org/reports/tr15/
@@ -403,15 +403,18 @@ class File extends Managed_DataObject
$height = $width;
$crop = true;
}
// Get proper aspect ratio width and height before lookup
// We have to do it through an ImageFile object because of orientation etc.
// Only other solution would've been to rotate + rewrite uploaded files.
$image = ImageFile::fromFileObject($this);
list($width, $height, $x, $y, $w2, $h2) =
ImageFile::getScalingValues($this->width, $this->height, $width, $height, $crop);
$image->scaleToFit($width, $height, $crop);
// Doublecheck that parameters are sane and integers.
if ($width < 1 || $width > common_config('thumbnail', 'maxsize')
|| $height < 1 || $height > common_config('thumbnail', 'maxsize')) {
// Fail on bad width parameter. If this occurs, it's due to algorithm in ImageFile::getScalingValues
// Fail on bad width parameter. If this occurs, it's due to algorithm in ImageFile->scaleToFit
throw new ServerException('Bad thumbnail size parameters.');
}
@@ -419,35 +422,11 @@ class File extends Managed_DataObject
'width' => $width,
'height' => $height);
$thumb = File_thumbnail::pkeyGet($params);
if ($thumb === null) {
// throws exception on failure to generate thumbnail
$thumb = $this->generateThumbnail($width, $height, $crop);
}
return $thumb;
}
/**
* Generate and store a thumbnail image for the uploaded file, if applicable.
* Call this only if you know what you're doing.
*
* @param $width int Maximum thumbnail width in pixels
* @param $height int Maximum thumbnail height in pixels, if null, crop to $width
*
* @return File_thumbnail or null
*/
protected function generateThumbnail($width, $height, $crop)
{
$width = intval($width);
if ($height === null) {
$height = $width;
$crop = true;
if ($thumb instanceof File_thumbnail) {
return $thumb;
}
$image = ImageFile::fromFileObject($this);
list($width, $height, $x, $y, $w2, $h2) =
$image->scaleToFit($width, $height, $crop);
// throws exception on failure to generate thumbnail
$outname = "thumb-{$width}x{$height}-" . $this->filename;
$outpath = self::path($outname);
@@ -459,7 +438,8 @@ class File extends Managed_DataObject
}
return File_thumbnail::saveThumbnail($this->id,
self::url($outname),
$width, $height);
$width, $height,
$outname);
}
public function getPath()
@@ -524,4 +504,9 @@ class File extends Managed_DataObject
return $count;
}
public function isLocal()
{
return !empty($this->filename);
}
}

33
classes/File_thumbnail.php
View File

@@ -30,6 +30,7 @@ class File_thumbnail extends Managed_DataObject
public $__table = 'file_thumbnail'; // table name
public $file_id; // int(4) primary_key not_null
public $url; // varchar(255) unique_key
public $filename; // varchar(255)
public $width; // int(4) primary_key
public $height; // int(4) primary_key
public $modified; // timestamp() not_null default_CURRENT_TIMESTAMP
@@ -40,6 +41,7 @@ class File_thumbnail extends Managed_DataObject
'fields' => array(
'file_id' => array('type' => 'int', 'not null' => true, 'description' => 'thumbnail for what URL/file'),
'url' => array('type' => 'varchar', 'length' => 255, 'description' => 'URL of thumbnail'),
'filename' => array('type' => 'varchar', 'length' => 255, 'description' => 'if stored locally, filename is put here'),
'width' => array('type' => 'int', 'description' => 'width of thumbnail'),
'height' => array('type' => 'int', 'description' => 'height of thumbnail'),
'modified' => array('type' => 'timestamp', 'not null' => true, 'description' => 'date this record was modified'),
@@ -88,19 +90,48 @@ class File_thumbnail extends Managed_DataObject
* @param int $width
* @param int $height
*/
static function saveThumbnail($file_id, $url, $width, $height)
static function saveThumbnail($file_id, $url, $width, $height, $filename=null)
{
$tn = new File_thumbnail;
$tn->file_id = $file_id;
$tn->url = $url;
$tn->filename = $filename;
$tn->width = intval($width);
$tn->height = intval($height);
$tn->insert();
return $tn;
}
static function path($filename)
{
// TODO: Store thumbnails in their own directory and don't use File::path here
return File::path($filename);
}
public function getUrl()
{
return $this->url;
}
public function delete($useWhere=false)
{
if (!empty($this->filename) && file_exists(File_thumbnail::path($this->filename))) {
$deleted = @unlink(self::path($this->filename));
if (!$deleted) {
common_log(LOG_ERR, sprintf('Could not unlink existing file: "%s"', self::path($this->filename)));
}
}
return parent::delete($useWhere);
}
public function getFile()
{
$file = new File();
$file->id = $this->file_id;
if (!$file->find(true)) {
throw new NoResultException($file);
}
return $file;
}
}