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Add Image Thumbnails and Previews for better image optimization update view image modal to JS and allow to move between images using previous and next arrows

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johnnyq
2024-12-08 15:22:37 -05:00
parent c4870e49cf
commit 1d8a78b279
6 changed files with 252 additions and 34 deletions
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133
post/user/file.php
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@@ -51,6 +51,119 @@ if (isset($_POST['upload_files'])) {
$file_id = mysqli_insert_id($mysqli);
// If the file is an image, create a thumbnail and an optimized preview image
if (in_array($file_extension, ['jpg', 'jpeg', 'png', 'gif', 'webp'])) {
// Thumbnail dimensions
$thumbnail_width = 200;
$thumbnail_height = 200;
// Optimized preview dimensions
$preview_max_width = 1200;
$preview_max_height = 1200;
// Get original dimensions
list($orig_width, $orig_height) = getimagesize($dest_path);
// Create image resource from the original file
switch ($file_extension) {
case 'jpg':
case 'jpeg':
$src_img = imagecreatefromjpeg($dest_path);
break;
case 'png':
$src_img = imagecreatefrompng($dest_path);
break;
case 'gif':
$src_img = imagecreatefromgif($dest_path);
break;
case 'webp':
$src_img = imagecreatefromwebp($dest_path);
break;
}
if ($src_img) {
// -------------------------
// CREATE THUMBNAIL
// -------------------------
$thumb_img = imagecreatetruecolor($thumbnail_width, $thumbnail_height);
imagecopyresampled($thumb_img, $src_img, 0, 0, 0, 0,
$thumbnail_width, $thumbnail_height,
$orig_width, $orig_height);
$thumbnail_file_name = 'thumbnail_' . $file_reference_name;
$thumb_path = $upload_file_dir . $thumbnail_file_name;
// Save thumbnail to disk
switch ($file_extension) {
case 'jpg':
case 'jpeg':
imagejpeg($thumb_img, $thumb_path, 80);
break;
case 'png':
imagepng($thumb_img, $thumb_path);
break;
case 'gif':
imagegif($thumb_img, $thumb_path);
break;
case 'webp':
imagewebp($thumb_img, $thumb_path);
break;
}
imagedestroy($thumb_img);
mysqli_query($mysqli,"UPDATE files SET file_has_thumbnail = 1 WHERE file_id = $file_id");
// -------------------------
// CREATE OPTIMIZED PREVIEW IMAGE
// -------------------------
$aspect_ratio = $orig_width / $orig_height;
if ($orig_width <= $preview_max_width && $orig_height <= $preview_max_height) {
$preview_new_width = $orig_width;
$preview_new_height = $orig_height;
} elseif ($aspect_ratio > 1) {
// Wider than tall
$preview_new_width = $preview_max_width;
$preview_new_height = (int)($preview_max_width / $aspect_ratio);
} else {
// Taller or square
$preview_new_height = $preview_max_height;
$preview_new_width = (int)($preview_max_height * $aspect_ratio);
}
$preview_img = imagecreatetruecolor($preview_new_width, $preview_new_height);
imagecopyresampled($preview_img, $src_img, 0, 0, 0, 0,
$preview_new_width, $preview_new_height,
$orig_width, $orig_height);
$preview_file_name = 'preview_' . $file_reference_name;
$preview_path = $upload_file_dir . $preview_file_name;
switch ($file_extension) {
case 'jpg':
case 'jpeg':
// Lower quality for optimization (70 is example)
imagejpeg($preview_img, $preview_path, 70);
break;
case 'png':
// Higher compression level (0-9), 7 is an example
imagepng($preview_img, $preview_path, 7);
break;
case 'gif':
imagegif($preview_img, $preview_path);
break;
case 'webp':
imagewebp($preview_img, $preview_path, 70);
break;
}
imagedestroy($preview_img);
imagedestroy($src_img);
mysqli_query($mysqli,"UPDATE files SET file_has_preview = 1 WHERE file_id = $file_id");
}
}
// Logging
logAction("File", "Upload", "$session_name uploaded file $file_name", $client_id, $file_id);
@@ -155,9 +268,18 @@ if (isset($_POST['delete_file'])) {
$client_id = intval($row['file_client_id']);
$file_name = sanitizeInput($row['file_name']);
$file_reference_name = sanitizeInput($row['file_reference_name']);
$file_has_thumbnail = intval($row['file_has_thumbnail']);
$file_has_preview = intval($row['file_has_preview']);
unlink("uploads/clients/$client_id/$file_reference_name");
if ($file_has_thumbnail == 1) {
unlink("uploads/clients/$client_id/thumbnail_$file_reference_name");
}
if ($file_has_preview == 1) {
unlink("uploads/clients/$client_id/preview_$file_reference_name");
}
mysqli_query($mysqli,"DELETE FROM files WHERE file_id = $file_id");
//Logging
@@ -190,9 +312,18 @@ if (isset($_POST['bulk_delete_files'])) {
$client_id = intval($row['file_client_id']);
$file_name = sanitizeInput($row['file_name']);
$file_reference_name = sanitizeInput($row['file_reference_name']);
$file_has_thumbnail = intval($row['file_has_thumbnail']);
$file_has_preview = intval($row['file_has_preview']);
unlink("uploads/clients/$client_id/$file_reference_name");
if ($file_has_thumbnail == 1) {
unlink("uploads/clients/$client_id/thumbnail_$file_reference_name");
}
if ($file_has_preview == 1) {
unlink("uploads/clients/$client_id/preview_$file_reference_name");
}
mysqli_query($mysqli,"DELETE FROM files WHERE file_id = $file_id");
// Log each invidual file deletion