public static function addWaterMark2($groundImage, $waterPos = 0, $waterImage = "", $waterText = "", $textFont = 5, $textColor = "#FF0000", $minwidth = 100, $minheight = 100)
{
$isWaterImage = false;
$formatMsg = "暂不支持该文件格式,请用图片处理软件将图片转换为GIF、JPG、PNG格式。";
//读取水印文件
if (!empty($waterImage) && file_exists($waterImage)) {
$isWaterImage = true;
$water_info = getimagesize($waterImage);
$water_w = $water_info[0];
//取得水印图片的宽
$water_h = $water_info[1];
//取得水印图片的高
switch ($water_info[2]) {
case 1:
$water_im = imagecreatefromgif($waterImage);
break;
case 2:
$water_im = imagecreatefromjpeg($waterImage);
break;
case 3:
$water_im = imagecreatefrompng($waterImage);
break;
default:
die($formatMsg);
}
}
//读取背景图片
if (!empty($groundImage) && file_exists($groundImage)) {
$ground_info = getimagesize($groundImage);
$ground_w = $ground_info[0];
//取得背景图片的宽
$ground_h = $ground_info[1];
//取得背景图片的高
switch ($ground_info[2]) {
case 1:
$ground_im = imagecreatefromgif($groundImage);
break;
case 2:
$ground_im = imagecreatefromjpeg($groundImage);
break;
case 3:
$ground_im = imagecreatefrompng($groundImage);
break;
default:
return false;
}
} else {
return false;
}
//水印位置
if ($isWaterImage) {
$w = $water_w;
$h = $water_h;
} else {
//取得使用 TrueType 字体的文本的范围
$temp = imagettfbbox(ceil($textFont * 2.5), 0, self::$waterMarkFontFile, $waterText);
$w = $temp[2] - $temp[6];
$h = $temp[3] - $temp[7];
unset($temp);
}
// add
if ($ground_w < $w || $ground_h < $h || $ground_w < $minwidth || $ground_h < $minheight) {
return false;
}
switch ($waterPos) {
case 0:
//随机
$posX = rand(0, $ground_w - $w);
$posY = rand(0, $ground_h - $h);
break;
case 1:
//1为顶端居左
$posX = 0;
$posY = 0;
break;
case 2:
//2为顶端居中
$posX = ($ground_w - $w) / 2;
$posY = 0;
break;
case 3:
//3为顶端居右
$posX = $ground_w - $w;
$posY = 0;
break;
case 4:
//4为中部居左
$posX = 0;
$posY = ($ground_h - $h) / 2;
break;
case 5:
//5为中部居中
$posX = ($ground_w - $w) / 2;
$posY = ($ground_h - $h) / 2;
break;
case 6:
//6为中部居右
$posX = $ground_w - $w;
$posY = ($ground_h - $h) / 2;
break;
case 7:
//7为底端居左
$posX = 0;
$posY = $ground_h - $h;
break;
case 8:
//8为底端居中
$posX = ($ground_w - $w) / 2;
$posY = $ground_h - $h;
break;
case 9:
//9为底端居右
$posX = $ground_w - $w;
$posY = $ground_h - $h;
break;
default:
//随机
$posX = rand(0, $ground_w - $w);
$posY = rand(0, $ground_h - $h);
break;
}
//设定图像的混色模式
imagealphablending($ground_im, true);
if ($isWaterImage) {
imagecopy($ground_im, $water_im, $posX, $posY, 0, 0, $water_w, $water_h);
//拷贝水印到目标文件
} else {
if (!empty($textColor) && strlen($textColor) == 7) {
$R = hexdec(substr($textColor, 1, 2));
$G = hexdec(substr($textColor, 3, 2));
$B = hexdec(substr($textColor, 5));
} else {
return false;
}
imagestring($ground_im, $textFont, $posX, $posY, $waterText, imagecolorallocate($ground_im, $R, $G, $B));
}
//生成水印后的图片
@unlink($groundImage);
switch ($ground_info[2]) {
case 1:
imagegif($ground_im, $groundImage);
break;
case 2:
imagejpeg($ground_im, $groundImage);
break;
case 3:
imagepng($ground_im, $groundImage);
break;
default:
return false;
}
//释放内存
if (isset($water_info)) {
unset($water_info);
}
if (isset($water_im)) {
imagedestroy($water_im);
}
unset($ground_info);
imagedestroy($ground_im);
return true;
}