upload/src/View.php

<?php
/*
|--------------------------------------------------------------------------
| 查看图片的几个方法
|--------------------------------------------------------------------------
*/
namespace Upload\Src;

use Dever;
use Upload\Src\Store\Local as Handle;
use Upload\Src\Lib\Img;

class View
{
	# 根据配置生成缩略图 暂时支持缩略图
	public function get($file)
	{
        $array = $this->getFile($file);
        $source = $array[0];
        $type = $array[1];
        $id = $array[2];

        if ($id > 0) {
            $host = Dever::config('host')->uploadRes;
            $root = Dever::data() . 'upload/';
            $dest = str_replace($host, $root, $file);

            if (!strstr($dest, 'http://') && !is_file($dest)) {
                $handle = new Handle();
                $method = 'handle_' . $type;
                $handle->$method($id, $source, $dest);
            }
        }

		return $file;
	}

	public function source($file)
	{
		# 搜索文件信息
        $array = $this->getFile($file);
		return $array[0];
	}

    private function getFile($file)
    {
        $type = $id = false;

        if (strstr($file, '_c')) {
            $array = explode('_c', $file);
            $type = 'c';
        } elseif (strstr($file, '_t')) {
            $array = explode('_t', $file);
            $type = 't';
        }

        if (isset($array)) {
            $temp = explode('.', $array[1]);
            $id = $temp[0];
            $file = $array[0] . '.' . $temp[1];
        }

        return array($file, $type, $id);
    }

	/**
     * create 生成图片
     * @param array $config
     * @param string $filename
     *
     * @return mixed
     */
	public function create($config = array(), $filename = '')
	{
		$this->img = isset($this->img) ? $this->img : new Img();

		$mark = array
		(
			'method' => 'mark',
			'water' => $config['image'][0]['url'],
			'position' => array(100,200),
			'width' => 100,
			'height' => 100,
			# 开启圆角
			//'radius' => -1,
		);

		$send[] = $mark;

		$mark = array
		(
			'method' => 'mark',
			'water' => $config['image'][0]['url'],
			'position' => array(200,500),
			'width' => 100,
			'height' => 100,
			# 开启圆角
			//'radius' => -1,
		);
		$send[] = $mark;

		$name = $this->img->init($config['background'], $send, true, $config['background'] . '.jpg');
		print_r($name);die;
	}

	public function creates($config = array(), $filename = '')
	{
		if(empty($filename)) header("content-type: image/png");
        $imageDefault = array(
            'left'=>0,
            'top'=>0,
            'right'=>0,
            'bottom'=>0,
            'width'=>100,
            'height'=>100,
            'opacity'=>100
        );
        $textDefault = array(
            'text'=>'',
            'left'=>0,
            'top'=>0,
            'fontSize'=>32,       //字号
            'fontColor'=>'255,255,255', //字体颜色
            'angle'=>0,
        );
        $background = $config['background'];//海报最底层得背景
        //背景方法
        $backgroundInfo = getimagesize($background);
        $backgroundFun = 'imagecreatefrom'.image_type_to_extension($backgroundInfo[2], false);
        $background = $backgroundFun($background);
        $backgroundWidth = imagesx($background);  //背景宽度
        $backgroundHeight = imagesy($background);  //背景高度
        $imageRes = imageCreatetruecolor($backgroundWidth,$backgroundHeight);
        $color = imagecolorallocate($imageRes, 0, 0, 0);
        imagefill($imageRes, 0, 0, $color);
        // imageColorTransparent($imageRes, $color);  //颜色透明
        imagecopyresampled($imageRes,$background,0,0,0,0,imagesx($background),imagesy($background),imagesx($background),imagesy($background));
        //处理了图片
        if (!empty($config['image'])) {
            foreach ($config['image'] as $key => $val) {
                $val = array_merge($imageDefault,$val);
                $info = getimagesize($val['url']);
                $function = 'imagecreatefrom'.image_type_to_extension($info[2], false);
                if ($val['stream']) {   //如果传的是字符串图像流
                    $info = getimagesizefromstring($val['url']);
                    $function = 'imagecreatefromstring';
                }
                if (isset($val['radius']) && $val['radius']) {
                	$res = $this->radius($val['url'], $val['radius']);
                } else {
                	$res = $function($val['url']);
                }
                
                $resWidth = $info[0];
                $resHeight = $info[1];
                //建立画板 ，缩放图片至指定尺寸
                $canvas = imagecreatetruecolor($val['width'], $val['height']);
                $color   = imagecolorallocate($background, 202, 201, 201); // 为真彩色画布创建白色背景，再设置为透明    
			    imagefill($canvas, 0, 0, $color);
			    imageColorTransparent($canvas, $color);
                //关键函数，参数（目标资源，源，目标资源的开始坐标x,y, 源资源的开始坐标x,y,目标资源的宽高w,h,源资源的宽高w,h）
                imagecopyresampled($canvas, $res, 0, 0, 0, 0, $val['width'], $val['height'],$resWidth,$resHeight);
                $val['left'] = $val['left']<0?$backgroundWidth- abs($val['left']) - $val['width']:$val['left'];
                $val['top'] = $val['top']<0?$backgroundHeight- abs($val['top']) - $val['height']:$val['top'];
                //放置图像
                imagecopymerge($imageRes,$canvas, $val['left'],$val['top'],$val['right'],$val['bottom'],$val['width'],$val['height'],$val['opacity']);//左，上，右，下，宽度，高度，透明度
            }
        }
        # 处理文字
        if (!empty($config['text'])) {
            foreach ($config['text'] as $key => $val) {
                $val = array_merge($textDefault,$val);
                list($R,$G,$B) = explode(',', $val['fontColor']);
                $fontColor = imagecolorallocate($imageRes, $R, $G, $B);
                $val['left'] = $val['left']<0?$backgroundWidth- abs($val['left']):$val['left'];
                $val['top'] = $val['top']<0?$backgroundHeight- abs($val['top']):$val['top'];
                imagettftext($imageRes,$val['fontSize'],$val['angle'],$val['left'],$val['top'],$fontColor,$val['fontPath'],$val['text']);
            }
        }
        # 生成图片
        if (!empty($filename)) {
            $res = imagepng ($imageRes,$filename,9);
            imagedestroy($imageRes);
            if(!$res) return false;
            return $filename;
        } else {
            imagepng ($imageRes, null, 9);
            imagedestroy($imageRes);
        }
	}
}