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Gallery feature

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Daniel Brendel
2023-10-01 12:15:03 +02:00
parent b68fb0d38a
commit 14242121e9
16 changed files with 646 additions and 35 deletions
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169
app/modules/UtilsModule.php
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@@ -24,4 +24,173 @@ class UtilsModule {
__('app.december'),
];
}
/**
* @param $file
* @return mixed|null
*/
public static function getImageExt($file)
{
$imagetypes = [
'png' => IMAGETYPE_PNG,
'jpg' => IMAGETYPE_JPEG,
'gif' => IMAGETYPE_GIF
];
foreach ($imagetypes as $ext => $type) {
if (exif_imagetype($file) === $type) {
return $ext;
}
}
return null;
}
/**
* @param string $imgFile
* @return bool
*/
public static function isValidImage($imgFile)
{
$imagetypes = array(
IMAGETYPE_PNG,
IMAGETYPE_JPEG,
IMAGETYPE_GIF
);
if (!file_exists($imgFile)) {
return false;
}
foreach ($imagetypes as $type) {
if (exif_imagetype($imgFile) === $type) {
return true;
}
}
return false;
}
/**
* @param $ext
* @param $file
* @return mixed|null
*/
public static function getImageType($ext, $file)
{
$imagetypes = array(
array('png', IMAGETYPE_PNG),
array('jpg', IMAGETYPE_JPEG),
array('jpeg', IMAGETYPE_JPEG),
array('gif', IMAGETYPE_GIF)
);
for ($i = 0; $i < count($imagetypes); $i++) {
if (strtolower($ext) == $imagetypes[$i][0]) {
if (exif_imagetype($file . '.' . $ext) == $imagetypes[$i][1])
return $imagetypes[$i][1];
}
}
return null;
}
/**
* @param $filename
* @param &$image
* @return void
*/
private static function correctImageRotation($filename, &$image)
{
$exif = @exif_read_data($filename);
if (!isset($exif['Orientation']))
return;
switch($exif['Orientation'])
{
case 8:
$image = imagerotate($image, 90, 0);
break;
case 3:
$image = imagerotate($image, 180, 0);
break;
case 6:
$image = imagerotate($image, 270, 0);
break;
default:
break;
}
}
/**
* @param $srcfile
* @param $imgtype
* @param $basefile
* @param $fileext
* @return bool
*/
public static function createThumbFile($srcfile, $imgtype, $basefile, $fileext)
{
list($width, $height) = getimagesize($srcfile);
$factor = 1.0;
if ($width > $height) {
if (($width >= 800) and ($width < 1000)) {
$factor = 0.5;
} else if (($width >= 1000) and ($width < 1250)) {
$factor = 0.4;
} else if (($width >= 1250) and ($width < 1500)) {
$factor = 0.4;
} else if (($width >= 1500) and ($width < 2000)) {
$factor = 0.3;
} else if ($width >= 2000) {
$factor = 0.2;
}
} else {
if (($height >= 800) and ($height < 1000)) {
$factor = 0.5;
} else if (($height >= 1000) and ($height < 1250)) {
$factor = 0.4;
} else if (($height >= 1250) and ($height < 1500)) {
$factor = 0.4;
} else if (($height >= 1500) and ($height < 2000)) {
$factor = 0.3;
} else if ($height >= 2000) {
$factor = 0.2;
}
}
$newwidth = $factor * $width;
$newheight = $factor * $height;
$dstimg = imagecreatetruecolor($newwidth, $newheight);
if (!$dstimg)
return false;
$srcimage = null;
switch ($imgtype) {
case IMAGETYPE_PNG:
$srcimage = imagecreatefrompng($srcfile);
imagecopyresampled($dstimg, $srcimage, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
static::correctImageRotation($srcfile, $dstimg);
imagepng($dstimg, $basefile . "_thumb." . $fileext);
break;
case IMAGETYPE_JPEG:
$srcimage = imagecreatefromjpeg($srcfile);
imagecopyresampled($dstimg, $srcimage, 0, 0, 0, 0, $newwidth, $newheight, $width, $height);
static::correctImageRotation($srcfile, $dstimg);
imagejpeg($dstimg, $basefile . "_thumb." . $fileext);
break;
case IMAGETYPE_GIF:
copy($srcfile, $basefile . "_thumb." . $fileext);
break;
default:
return false;
break;
}
return true;
}
}