<?php
if (!defined('DEDEINC')) exit('dedebiz');
/**
* 图像处理相关函数
*
* @version $Id: image.func.php 1 15:59 2010年7月5日Z tianya $
* @package DedeBIZ.Helpers
* @copyright Copyright (c) 2022, DedeBIZ.COM
* @license https://www.dedebiz.com/license
* @link https://www.dedebiz.com
*/
//------------------------------------------------------------------------
/**
* 缩图片自动生成函数，来源支持bmp、gif、jpg、png
* 但生成的小图只用jpg或png格式
*
* @access public
* @param string $srcFile 图片路径
* @param string $toW 转换到的宽度
* @param string $toH 转换到的高度
* @param string $toFile 输出文件到
* @return string
*/
if (!function_exists('ImageResize')) {
function ImageResize($srcFile, $toW, $toH, $toFile = "")
{
global $cfg_photo_type;
if ($toFile == '') $toFile = $srcFile;
$info = '';
$srcInfo = GetImageSize($srcFile, $info);
switch ($srcInfo[2]) {
case 1:
if (!$cfg_photo_type['gif']) return FALSE;
$im = imagecreatefromgif($srcFile);
break;
case 2:
if (!$cfg_photo_type['jpeg']) return FALSE;
$im = imagecreatefromjpeg($srcFile);
break;
case 3:
if (!$cfg_photo_type['png']) return FALSE;
$im = imagecreatefrompng($srcFile);
break;
case 6:
if (!$cfg_photo_type['bmp']) return FALSE;
$im = imagecreatefromwbmp($srcFile);
break;
}
$srcW = ImageSX($im);
$srcH = ImageSY($im);
if ($srcW <= $toW && $srcH <= $toH) return TRUE;
$toWH = $toW / $toH;
$srcWH = $srcW / $srcH;
if ($toWH <= $srcWH) {
$ftoW = $toW;
$ftoH = $ftoW * ($srcH / $srcW);
} else {
$ftoH = $toH;
$ftoW = $ftoH * ($srcW / $srcH);
}
if ($srcW > $toW || $srcH > $toH) {
if (function_exists("imagecreateTRUEcolor")) {
@$ni = imagecreateTRUEcolor($ftoW, $ftoH);
if ($ni) {
imagecopyresampled($ni, $im, 0, 0, 0, 0, $ftoW, $ftoH, $srcW, $srcH);
} else {
$ni = imagecreate($ftoW, $ftoH);
imagecopyresized($ni, $im, 0, 0, 0, 0, $ftoW, $ftoH, $srcW, $srcH);
}
} else {
$ni = imagecreate($ftoW, $ftoH);
imagecopyresized($ni, $im, 0, 0, 0, 0, $ftoW, $ftoH, $srcW, $srcH);
}
switch ($srcInfo[2]) {
case 1:
imagegif($ni, $toFile);
break;
case 2:
imagejpeg($ni, $toFile, 85);
break;
case 3:
imagepng($ni, $toFile);
break;
case 6:
imagebmp($ni, $toFile);
break;
default:
return FALSE;
}
imagedestroy($ni);
}
imagedestroy($im);
return TRUE;
}
}
/**
* 获得GD的版本
*
* @access public
* @return int
*/
if (!function_exists('gdversion')) {
function gdversion()
{
//没启用php.ini函数的情况下如果有GD默认视作2.0以上版本
if (!function_exists('phpinfo')) {
if (function_exists('imagecreate')) {
return '2.0';
} else {
return 0;
}
} else {
ob_start();
phpinfo(8);
$module_info = ob_get_contents();
ob_end_clean();
if (preg_match("/\bgd\s+version\b[^\d\n\r]+?([\d\.]+)/i", $module_info, $matches)) {
$gdversion_h = $matches[1];
} else {
$gdversion_h = 0;
}
return $gdversion_h;
}
}
}
/**
* 图片自动加水印函数
*
* @access public
* @param string $srcFile 图片源文件
* @param string $fromGo 位置
* @return string
*/
if (!function_exists('WaterImg')) {
function WaterImg($srcFile, $fromGo = 'up')
{
include(DEDEDATA.'/mark/inc_photowatermark_config.php');
require_once(DEDEINC.'/image.class.php');
if (isset($GLOBALS['needwatermark'])) {
$photo_markup = $photo_markdown = empty($GLOBALS['needwatermark']) ? '0' : '1';
}
if ($photo_markup != '1' || ($fromGo == 'collect' && $photo_markdown != '1')) {
return;
}
$info = '';
$srcInfo = @getimagesize($srcFile, $info);
$srcFile_w = $srcInfo[0];
$srcFile_h = $srcInfo[1];
if ($srcFile_w < $photo_wwidth || $srcFile_h < $photo_wheight) {
return;
}
if ($fromGo == 'up' && $photo_markup == '0') {
return;
}
if ($fromGo == 'down' && $photo_markdown == '0') {
return;
}
$TRUEMarkimg = DEDEDATA.'/mark/'.$photo_markimg;
if (!file_exists($TRUEMarkimg) || empty($photo_markimg)) {
$TRUEMarkimg = "";
}
if ($photo_waterpos == 0) {
$photo_waterpos = rand(1, 9);
}
$cfg_watermarktext = array();
if ($photo_marktype == '2') {
if (file_exists(DEDEDATA.'/mark/simhei.ttf')) {
$cfg_watermarktext['fontpath'] = DEDEDATA.'/mark/simhei.ttf';
} else {
return;
}
}
$cfg_watermarktext['text'] = $photo_watertext;
$cfg_watermarktext['size'] = $photo_fontsize;
$cfg_watermarktext['angle'] = '0';
$cfg_watermarktext['color'] = '255,255,255';
$cfg_watermarktext['shadowx'] = '0';
$cfg_watermarktext['shadowy'] = '0';
$cfg_watermarktext['shadowcolor'] = '0,0,0';
$photo_marktrans = 85;
$img = new image($srcFile, 0, $cfg_watermarktext, $photo_waterpos, $photo_diaphaneity, $photo_wheight, $photo_wwidth, $photo_marktype, $photo_marktrans, $TRUEMarkimg);
$img->watermark(0);
}
}
/**
* 会对空白地方填充满
*
* @access public
* @param string $srcFile 图片路径
* @param string $toW 转换到的宽度
* @param string $toH 转换到的高度
* @param string $toFile 输出文件到
* @param string $issave 是否保存
* @return bool
*/
if (!function_exists('ImageResizeNew')) {
function ImageResizeNew($srcFile, $toW, $toH, $toFile = '', $issave = TRUE)
{
global $cfg_photo_type, $cfg_ddimg_bgcolor;
if ($toFile == '') $toFile = $srcFile;
$info = '';
$srcInfo = GetImageSize($srcFile, $info);
switch ($srcInfo[2]) {
case 1:
if (!$cfg_photo_type['gif']) return FALSE;
$img = imagecreatefromgif($srcFile);
break;
case 2:
if (!$cfg_photo_type['jpeg']) return FALSE;
$img = imagecreatefromjpeg($srcFile);
break;
case 3:
if (!$cfg_photo_type['png']) return FALSE;
$img = imagecreatefrompng($srcFile);
break;
case 6:
if (!$cfg_photo_type['bmp']) return FALSE;
$img = imagecreatefromwbmp($srcFile);
break;
}
$width = imageSX($img);
$height = imageSY($img);
if (!$width || !$height) {
return FALSE;
}
$target_width = $toW;
$target_height = $toH;
$target_ratio = $target_width / $target_height;
$img_ratio = $width / $height;
if ($target_ratio > $img_ratio) {
$new_height = $target_height;
$new_width = $img_ratio * $target_height;
} else {
$new_height = $target_width / $img_ratio;
$new_width = $target_width;
}
if ($new_height > $target_height) {
$new_height = $target_height;
}
if ($new_width > $target_width) {
$new_height = $target_width;
}
$new_img = ImageCreateTrueColor($target_width, $target_height);
if ($cfg_ddimg_bgcolor == 0) $bgcolor = ImageColorAllocate($new_img, 0xff, 0xff, 0xff);
else $bgcolor = 0;
if (!@imagefilledrectangle($new_img, 0, 0, $target_width - 1, $target_height - 1, $bgcolor)) {
return FALSE;
}
if (!@imagecopyresampled($new_img, $img, ($target_width - $new_width) / 2, ($target_height - $new_height) / 2, 0, 0, $new_width, $new_height, $width, $height)) {
return FALSE;
}
//保存为目标文件
if ($issave) {
switch ($srcInfo[2]) {
case 1:
imagegif($new_img, $toFile);
break;
case 2:
imagejpeg($new_img, $toFile, 100);
break;
case 3:
imagepng($new_img, $toFile);
break;
case 6:
imagebmp($new_img, $toFile);
break;
default:
return FALSE;
}
}
//不保存
else {
switch ($srcInfo[2]) {
case 1:
imagegif($new_img);
break;
case 2:
imagejpeg($new_img);
break;
case 3:
imagepng($new_img);
break;
case 6:
imagebmp($new_img);
break;
default:
return FALSE;
}
}
imagedestroy($new_img);
imagedestroy($img);
return TRUE;
}
}