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Add the thumbnail creator from nanostudio-org#2
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@coenvl
coenvl committed Oct 23, 2018
1 parent cf11b67 commit d953313
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Showing 2 changed files with 230 additions and 1 deletion.
4 changes: 3 additions & 1 deletion dist/nano_photos_provider2.cfg
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Original file line number Diff line number Diff line change
@@ -1,5 +1,5 @@
[config]
fileExtensions="jpg|jpeg|png|gif"
fileExtensions="jpg|JPG|jpeg|png|gif"
contentFolder="nano_photos_content"
sortOrder="asc"
titleDescSeparator="$$"
Expand All @@ -15,6 +15,8 @@ jpegQuality=90
blurredImageQuality=3
allowedSizeValues=""
;allowedSizeValues="50|100|225|150|200|300|auto"
thumbnailHeight="200"
thumbnailWidth="200"

[security]
allowOrigins="*"
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227 changes: 227 additions & 0 deletions dist/thumbnailcreator.php
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Original file line number Diff line number Diff line change
@@ -0,0 +1,227 @@
#!/usr/bin/php
<?php

require dirname(__FILE__) . '/nano_photos_provider2.encoding.php';

function image_fix_orientation(&$image, &$size, $filename) {
$exif = exif_read_data($filename);
if (!empty($exif['Orientation'])) {
switch ($exif['Orientation']) {
case 3:
if ($image != null)
$image = imagerotate($image, 180, 0);
break;
case 6:
if ($image != null)
$image = imagerotate($image, -90, 0);
list($size[0],$size[1]) = array($size[1],$size[0]);
break;
case 8:
if ($image != null)
$image = imagerotate($image, 90, 0);
list($size[0],$size[1]) = array($size[1],$size[0]);
break;
}
}
}

$config_values = parse_ini_file( dirname(__FILE__) . '/nano_photos_provider2.cfg', true);

// Loop through all files in contentFolder
$path = realpath( dirname(__FILE__ ) . '/' .$config_values['config']['contentFolder'] );
foreach (new RecursiveIteratorIterator(new RecursiveDirectoryIterator($path)) as $filepath)
{
// Only files with extensions according to fileExtensions
if (preg_match("/".$config_values['config']['fileExtensions']."/iu",$filepath) and strpos($filepath, '_thumbnail') ===false) {

$baseFolder = dirname($filepath);
$imageFilename = basename($filepath);
$thumbWidth = $config_values['thumbnails']['thumbnailWidth'];
$thumbHeight = $config_values['thumbnails']['thumbnailHeight'];
$thumbnailFilename = pathinfo($filepath, PATHINFO_FILENAME) . "_" . $thumbWidth . "_" . $thumbHeight . "." . pathinfo($filepath, PATHINFO_EXTENSION);
$dominantcolorFilename = $thumbnailFilename . ".data";

// Check if _thumbnail - Folder exists
if (!file_exists( $baseFolder . '/_thumbnails' )) {
mkdir( $baseFolder . '/_thumbnails', 0755, true );
}

// Check if thumbnail exists
$generateThumbnail = true;
if (file_exists($baseFolder . '/_thumbnails/' . $thumbnailFilename)) {
if( filemtime($baseFolder . '/_thumbnails/' . $thumbnailFilename) > filemtime($baseFolder.'/'.$imageFilename) ) {
// image file is older as the thumbnail file
$generateThumbnail = false;
}
}

// Check if dominantColors exists
$generateDominantColors = true;
if( file_exists($baseFolder . '/_thumbnails/' . $dominantcolorFilename)) {
if( filemtime($baseFolder . '/_thumbnails/' . $dominantcolorFilename) > filemtime($baseFolder.'/'.$imageFilename) ) {
$generateDominantColors=false;
}
}
else {
}

// Get ImageSize
$size = getimagesize($filepath);
$orgImage = null;
image_fix_orientation($orgImage, $size, $filepath);

$width = $size[0];
$height = $size[1];

if ($height == 0) {
echo "Image with zero height: $filepath\n";
continue;
}

$originalAspect = $width / $height;
$thumbAspect = $thumbWidth / $thumbHeight;

// Check ImageSize against MaxSize
$generateMaxSize = false;
if ( $width > $config_values['images']['maxSize'] || $height > $config_values['images']['maxSize'] ) {
if ( file_exists($baseFolder . '/_thumbnails/' .$imageFilename) == false ) {
$generateMaxSize = true;
}
}

// Generate Image
if( $generateThumbnail == true || $generateDominantColors == true || $generateMaxSize == true ) {
switch ($size['mime']) {
case 'image/jpeg':
$orgImage = imagecreatefromjpeg($filepath);
break;
case 'image/gif':
$orgImage = imagecreatefromgif($filepath);
break;
case 'image/png':
$orgImage = imagecreatefrompng($filepath);
break;
default:
return false;
break;
}
}
image_fix_orientation($orgImage, $size, $filepath);

// Resize Image if >MaxSize
if( $generateMaxSize == true ) {

// Calc new size
if ( $width > $height ) {
$MaxSizeWidth = $config_values['images']['maxSize'];
$MaxSizeHeight = $MaxSizeWidth / $originalAspect;

} else {
$MaxSizeHeight = $config_values['images']['maxSize'];
$MaxSizeWidth = $MaxSizeHeight * $originalAspect;
}

$MaxSize = imagecreatetruecolor($MaxSizeWidth, $MaxSizeHeight);
// Resize
imagecopyresampled($MaxSize, $orgImage, 0, 0, 0, 0, $MaxSizeWidth, $MaxSizeHeight, $width, $height);

switch ($size['mime']) {
case 'image/jpeg':
imagejpeg($MaxSize, $baseFolder . '/_thumbnails/' . $imageFilename, $config_values['thumbnails']['jpegQuality'] );
break;
case 'image/gif':
imagegif($MaxSize, $baseFolder . '/_thumbnails/' . $imageFilename);
break;
case 'image/png':
imagepng($MaxSize, $baseFolder . '/_thumbnails/' . $imageFilename, 1);
break;
}
}

if ( $thumbWidth != 'auto' && $thumbHeight != 'auto' ) {

// IMAGE CROP
// some inspiration found in donkeyGallery (from Gix075) https://github.com/Gix075/donkeyGallery
if ($originalAspect >= $thumbAspect) {
// If image is wider than thumbnail (in aspect ratio sense)
$newHeight = $thumbHeight;
$newWidth = $width / ($height / $thumbHeight);
} else {
// If the thumbnail is wider than the image
$newWidth = $thumbWidth;
$newHeight = $height / ($width / $thumbWidth);
}

if( $generateThumbnail == true ) {
$thumb = imagecreatetruecolor($thumbWidth, $thumbHeight);
// Resize and crop
imagecopyresampled($thumb, $orgImage,
0 - ($newWidth - $thumbWidth) / 2, // dest_x: Center the image horizontally
0 - ($newHeight - $thumbHeight) / 2, // dest-y: Center the image vertically
0, 0, // src_x, src_y
$newWidth, $newHeight, $width, $height);
}

} else {
// NO IMAGE CROP
if( $thumbWidth == 'auto' ) {
$newWidth = $width / $height * $thumbHeight;
$newHeight = $thumbHeight;
}
else {
$newHeight = $height / $width * $thumbWidth;
$newWidth = $thumbWidth;
}

if( $generateThumbnail == true ) {
$thumb = imagecreatetruecolor($newWidth, $newHeight);

// Resize
imagecopyresampled($thumb, $orgImage, 0, 0, 0, 0, $newWidth, $newHeight, $width, $height);
}
}

if( $generateThumbnail == true ) {
switch ($size['mime']) {
case 'image/jpeg':
imagejpeg($thumb, $baseFolder . '/_thumbnails/' . $thumbnailFilename, $config_values['thumbnails']['jpegQuality'] );
break;
case 'image/gif':
imagegif($thumb, $baseFolder . '/_thumbnails/' . $thumbnailFilename);
break;
case 'image/png':
imagepng($thumb, $baseFolder . '/_thumbnails/' . $thumbnailFilename, 1);
break;
}
}


if( $generateDominantColors == true ) {
// Dominant colorS -> GIF
$dc3 = imagecreate($config_values['thumbnails']['blurredImageQuality'], $config_values['thumbnails']['blurredImageQuality']);
imagecopyresampled($dc3, $orgImage, 0, 0, 0, 0, 3, 3, $width, $height);
ob_start();
imagegif( $dc3 );
$image_data = ob_get_contents();
ob_end_clean();

// Dominant color -> HEX RGB
$pixel = imagecreatetruecolor(1, 1);
imagecopyresampled($pixel, $orgImage, 0, 0, 0, 0, 1, 1, $width, $height);
$rgb = imagecolorat($pixel, 0, 0);
$color = imagecolorsforindex($pixel, $rgb);
$hex=sprintf('#%02x%02x%02x', $color['red'], $color['green'], $color['blue']);

// save to cache
$fdc = fopen($baseFolder . '/_thumbnails/' . $thumbnailFilename . '.data', 'w');
if( $fdc ) {
fwrite($fdc, 'dc=' . $hex . "\n");
fwrite($fdc, 'dcGIF=' . base64_encode( $image_data ));
fclose($fdc);
}
else {
}
}
}
}
?>

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