<?php

/**

 * 处理图片类

 * 1.添加文字水印

 * 2.添加图片水印

 * 3.压缩图片

 */

class TL_Image{

	private $image;//内存中的图片

	private $info;//图片的基本信息

	/**

	 * 打开一张图片，读取到内存

	 * @param [type] $src [description] 图片路径

	 */

	public function __construct($src){

		$info = getimagesize($src);

		$this->info = array(

			'width' => $info[0],

			'height' => $info[1],

			'type' => image_type_to_extension($info['2'],false),

			'mime' => $info['mime'],

		);

		$fun = "imagecreatefrom{$this->info['type']}";

		$this->image = $fun($src);

	}

	/**

	 * 操作图片(压缩)

	 * @param  [type] $width  [description] 宽

	 * @param  [type] $height [description] 高

	 * @return [type]         [description]

	 */

	public function thumb($width,$height){

		$image_thumb = imagecreatetruecolor($width,$height);

		imagecopyresampled($image_thumb, $this->image, 0, 0, 0, 0, $width, $height, $this->info['width'], $this->info['height']);

		imagedestroy($this->image);

		$this->image = $image_thumb;

	}

	/**

	 * 操作图片(添加文字水印)

	 * [fontMark description]

	 * @param  [type] $content  [description] 设置文字

	 * @param  [type] $font_url [description] 字体文件路径

	 * @param  [type] $size     [description] 字体大小

	 * @param  [type] $color    [description] 字体颜色 []

	 * @param  [type] $local    [description] 位置 []

	 * @param  [type] $angle    [description] 旋转

	 * @return [type]           [description]

	 */

	public function fontMark($content,$font_url,$size,$color,$local,$angle){

		$col = imagecolorallocatealpha($this->image,$color[0],$color[1],$color[2],$color[3]);

		imagettftext($this->image, $size, $angle, $local['x'], $local['y'], $col, $font_url, $content);

	}

	/**

	 * 操作图片(添加图片水印)

	 * @param  [type] $source [description] 水印图片路径

	 * @param  [type] $local  [description] 位置 []

	 * @param  [type] $alpha  [description] 透明

	 * @return [type]         [description]

	 */

	public function imageMark($source,$local,$alpha){

		$info2 = getimagesize($source);

		$type2 = image_type_to_extension($info2[2],false);

		$fun2 = "imagecreatefrom{$type2}";

		$water = $fun2($source);

		imagecopymerge($this->image, $water,  $local['x'],  $local['y'], 0, 0, $info2[0], $info2[1], $alpha);

		imagedestroy($water);

	}

	/**

	 * 浏览器输出图片

	 */

	public function show(){

		header("Content-Type:" . $this->info['mime']);

		$funs = "image{$this->info['type']}";

		$funs($this->image);

	}

	/**

	 * 保存图片

	 * @param  [type] $newname [description] 保存之后的名字

	 * @return [type]      	   [description]

	 */

	public function save($srcs){

		$funs = "image{$this->info['type']}";

		$funs($this->image,$srcs);

		//move_uploaded_file($this->image, $srcs);

	}

	/**

	 * 销毁图片

	 */

	public function __destruct(){

		imagedestroy($this->image);

	}

}