//Check if the file exists
if (!file_exists($file)) {
throw new Exception("Error: File at path {$file} does not exist.");
}
//Check to make sure the file is an image of the appropriate extension.
if (!(preg_match('/.png/i', $file) || preg_match('/.jpg/i', $file) || preg_match('/.jpeg/i', $file))) {
throw new Exception("Error: Invalid file type for {$file}. Must be jpeg or png");
}
// Main logic
$f_name = basename($file);
echo "Processing " . $f_name . "....\n\n";
$path_info = pathinfo($file);
$image = $path_info['extension'] == 'png' ? imagecreatefrompng($file) : imagecreatefromjpeg($file);
$hex_array = get_color_values($image);
$top_five = get_dominant_five($hex_array);
$json_obj = get_img_info($f_name, $top_five);
echo $json_obj . "\n\n";
}
// Returns an array representing all of the pixels and their respective #hex values.
function get_color_values($image)
{
$image_x = imagesx($image);
$image_y = imagesy($image);
$hex_array = array();
for ($x = 0; $x < $image_x; $x++) {
for ($y = 0; $y < $image_y; $y++) {
$color = imagecolorat($image, $x, $y);
$red = $color >> 16 & 0xff;
$green = $color >> 8 & 0xff;
$blue = $color & 0xff;
$hex = rgb_to_hex(array($red, $green, $blue));
function resize_img()
{
if (!($image = $_POST["img"])) {
$result['result_code'] = 101;
$result['result_des'] = "图片不存在";
} else {
$real_img = $_SERVER['DOCUMENT_ROOT'] . $image;
$info = get_img_info($real_img);
if (!$info) {
$result['result_code'] = 102;
$result['result_des'] = $image;
} else {
$max_width = 440;
if ($info['type'] == 'jpg' || $info['type'] == 'jpeg') {
$im = imagecreatefromjpeg($real_img);
}
if ($info['type'] == 'gif') {
$im = imagecreatefromgif($real_img);
}
if ($info['type'] == 'png') {
$im = imagecreatefrompng($real_img);
}
if ($info['width'] <= $max_width) {
$rate = 1;
} else {
$rate = $info['width'] / $max_width;
if ($info['width'] > $info['height']) {
$max_height = intval($info['height'] / ($info['width'] / $max_width));
} else {
$max_width = intval($info['width'] / ($info['height'] / $max_height));
}
}
$x = $_POST["x"];
$y = $_POST["y"];
$w = $_POST["w"];
$h = $_POST["h"];
$width = $srcWidth = $info['width'];
$height = $srcHeight = $info['height'];
$type = empty($type) ? $info['type'] : $type;
$type = strtolower($type);
unset($info);
//创建缩略图
if ($type != 'gif' && function_exists('imagecreatetruecolor')) {
$thumbImg = imagecreatetruecolor($width, $height);
} else {
$thumbImg = imagecreate($width, $height);
}
// 复制图片
if (function_exists("imagecopyresampled")) {
imagecopyresampled($thumbImg, $im, 0, 0, 0, 0, $width, $height, $srcWidth, $srcHeight);
} else {
imagecopyresized($thumbImg, $im, 0, 0, 0, 0, $width, $height, $srcWidth, $srcHeight);
}
if ('gif' == $type || 'png' == $type) {
$background_color = imagecolorallocate($thumbImg, 0, 255, 0);
imagecolortransparent($thumbImg, $background_color);
}
// 对jpeg图形设置隔行扫描
if ('jpg' == $type || 'jpeg' == $type) {
imageinterlace($thumbImg, 1);
}
if (!is_dir(get_save_path() . "emp_pic/")) {
mkdir(get_save_path() . "emp_pic/", 0777, true);
chmod(get_save_path() . "emp_pic/", 0777);
}
// 生成图片
$imageFun = 'image' . ($type == 'jpg' ? 'jpeg' : $type);
$id = $_REQUEST['id'];
$thumbname = get_save_path() . "emp_pic/" . $id . "." . $type;
$imageFun($thumbImg, $thumbname, 100);
$thumbImg_120 = imagecreatetruecolor(120, 120);
imagecopyresampled($thumbImg_120, $thumbImg, 0, 0, intval($x * $rate), intval($y * $rate), intval(120 * 1), intval(120 * 1), intval($w * $rate), intval($h * $rate));
$imageFun($thumbImg_120, $thumbname, 100);
imagedestroy($thumbImg);
imagedestroy($im);
$result['result_code'] = 1;
$result['result_des'] = str_replace(get_save_path(), "", $thumbname);
}
}
echo json_encode($result);
}
/**
* 获取各种规格的图片，如果有同种规格的图片直接返回，没有将生成
* @param string $img // 要缩放的图片
* @param int $width // 是要缩放到的宽
* @param int $height // 要缩放到的高
* @param string $type // 缩放类型 thumb是缩放 merge是融图 cut是修剪,fixed是固定大小
* @param string $default // 如果图片为空时的默认图片
* @return string $newName // 缩放后的文件名
*/
function get_img($id, $width = 100, $height = 100, $type = 'thumb', $default = '')
{
$info = get_img_info($id);
if (empty($info)) {
return $default;
}
$img_path = 'Public' . ltrim($info['savepath'], '.') . $info['savename'];
if (!file_exists($img_path)) {
return $default;
}
$type = strtolower($type);
$type_arr = array('thumb', 'merge', 'cut', 'fixed');
if (!in_array($type, $type_arr)) {
$type = 'thumb';
}
if (empty($width)) {
$width = 100;
}
if (empty($height)) {
$height = 100;
}
$dirname = dirname($img_path);
$filename = array_shift(explode('.', $info['savename']));
$name = $filename . '_' . $type . '_' . $width . $height . '.' . $info['ext'];
$save = $dirname . '/' . $name;
if (file_exists($save)) {
return __ROOT__ . '/' . $save;
}
$image = new \Think\Image();
$image->open($img_path);
switch ($type) {
case 'merge':
// 生成一个缩放后填充的缩略图并保存
$image->thumb($width, $height, \Think\Image::IMAGE_THUMB_FILLED)->save($save);
break;
case 'cut':
// 生成一个缩放后填充的缩略图并保存
$image->thumb($width, $height, \Think\Image::IMAGE_THUMB_CENTER)->save($save);
break;
case 'fixed':
// 生成一个缩放后填充的缩略图并保存
$image->thumb($width, $height, \Think\Image::IMAGE_THUMB_FIXED)->save($save);
break;
default:
// 单纯的缩放
$image->thumb($width, $height)->save($save);
break;
}
return __ROOT__ . '/' . $save;
}
