[PHP知识库]php 图片圆角 圆弧

<?php
/**
 * Created by PhpStorm.
 * User: qianyongchun
 * Date: 2021/12/8
 * Time: 10:13
 */

namespace app\api\controller;
use app\api\controller\Common;
use think\Db;
use think\Image;

class ImageTools extends Common
{
    public function _initialize()
    {
//        parent::_initialize(); // TODO: Change the autogenerated stub
    }

    public function radiusImage($imgpath,$imageResouce)
    {
        //整个图,也就是白色背景
        $im = imagecreatetruecolor(372, 226);
        $bgcolor = imagecolorallocate($im, 255, 255, 255);
        imagefill($im, 0, 0, $bgcolor);
        $radius = 20;//圆角的像素，值越大越圆
        $img = imagecreatefromstring($imageResouce);
        //第一个参数是上面已经用过的大的背景图，也就我们的画板，
        //第二个参数：上面这个目录拿到的capy用的资源文件了
        //第三个单数距离大卡片左边的距离
        //第三个单数距离大卡片上边的距离
        //第三第四是资源图片开始拷贝的位置，这里我是从左上角开始copy的，所以是0和0；
        //第五第六个参数是图片拷过去的大小
        imagecopy($im, $img, 0, 0, 0, 0, 372, 226);

        //画圆角
        $lt_corner = $this->get_lt_rounder_corner($radius, 0xef, 0xef, 0xe1);
        //圆角的背景色
        $this->myradus($im, 0, 0, $lt_corner, $radius, 226, 372);
        //生成图片
        imagepng($im, $imgpath);
        imagedestroy($img);
    }
    /**
     * 画一个带圆角的背景图
     * @param $im  底图
     * @param $dst_x 画出的图的（0，0）位于底图的x轴位置
     * @param $dst_y 画出的图的（0，0）位于底图的y轴位置
     * @param $image_w 画的图的宽
     * @param $image_h 画的图的高
     * @param $radius 圆角的值
     */
    public function imagebackgroundmycard($im, $dst_x, $dst_y, $image_w, $image_h, $radius)
    {
        $resource = imagecreatetruecolor($image_w, $image_h);
        $bgcolor = imagecolorallocate($resource, 0xef, 0xef, 0xe1);//该图的背景色

        imagefill($resource, 0, 0, $bgcolor);
        $lt_corner = $this->get_lt_rounder_corner($radius, 255, 255, 255);//圆角的背景色

        // lt(左上角)
        imagecopymerge($resource, $lt_corner, 0, 0, 0, 0, $radius, $radius, 100);
        // lb(左下角)
        $lb_corner = imagerotate($lt_corner, 90, 0);
        imagecopymerge($resource, $lb_corner, 0, $image_h - $radius, 0, 0, $radius, $radius, 100);
        // rb(右上角)
        $rb_corner = imagerotate($lt_corner, 180, 0);
        imagecopymerge($resource, $rb_corner, $image_w - $radius, $image_h - $radius, 0, 0, $radius, $radius, 100);
        // rt(右下角)
        $rt_corner = imagerotate($lt_corner, 270, 0);
        imagecopymerge($resource, $rt_corner, $image_w - $radius, 0, 0, 0, $radius, $radius, 100);

        imagecopy($im, $resource, $dst_x, $dst_y, 0, 0, $image_w, $image_h);
    }

    /** 画圆角
     * @param $radius 圆角位置
     * @param $color_r 色值0-255
     * @param $color_g 色值0-255
     * @param $color_b 色值0-255
     * @return resource 返回圆角
     */
    public function get_lt_rounder_corner($radius, $color_r, $color_g, $color_b)
    {
        // 创建一个正方形的图像
        $img = imagecreatetruecolor($radius, $radius);
        // 图像的背景
        $bgcolor = imagecolorallocate($img, 255, 255, 255);
        $fgcolor = imagecolorallocate($img, 0, 0, 0);
        imagefill($img, 0, 0, $bgcolor);
        // $radius,$radius：以图像的右下角开始画弧
        // $radius*2, $radius*2：已宽度、高度画弧
        // 180, 270：指定了角度的起始和结束点
        // fgcolor：指定颜色
        imagefilledarc($img, $radius, $radius, $radius * 2, $radius * 2, 180, 270, $fgcolor, IMG_ARC_PIE);
        // 将弧角图片的颜色设置为透明
        imagecolortransparent($img, $fgcolor);
        return $img;
    }

    /**
     * @param $im  大的背景图，也是我们的画板
     * @param $lt_corner 我们画的圆角
     * @param $radius  圆角的程度
     * @param $image_h 图片的高
     * @param $image_w 图片的宽
     */
    public function myradus($im, $lift, $top, $lt_corner, $radius, $image_h, $image_w)
    {
        // lt(左上角)
        imagecopymerge($im, $lt_corner, $lift, $top, 0, 0, $radius, $radius, 100);
        // lb(左下角)
        $lb_corner = imagerotate($lt_corner, 90, 0);
        imagecopymerge($im, $lb_corner, $lift, $image_h - $radius+$top, 0, 0, $radius, $radius, 100);
        // rb(右上角)
        $rb_corner = imagerotate($lt_corner, 180, 0);
        imagecopymerge($im, $rb_corner, $image_w + $lift - $radius, $image_h + $top - $radius, 0, 0, $radius, $radius, 100);
        // rt(右下角)
        $rt_corner = imagerotate($lt_corner, 270, 0);
        imagecopymerge($im, $rt_corner, $image_w - $radius + $lift, $top, 0, 0, $radius, $radius, 100);
    }

    /**
     * 处理成圆图片,如果图片不是正方形就取最小边的圆半径,从左边开始剪切成圆形
     * @param  string $imgpath [description]
     * @return [type]          [description]
     */
    public function circleImg($imgpath,$imageResouce){
        $ext     = pathinfo($imgpath);
        $src_img = null;
        switch ($ext['extension']) {
            case 'jpg':
                $src_img = imagecreatefromstring($imageResouce);
                break;
            case 'png':
                $src_img = imagecreatefromstring($imageResouce);
                break;
        }
        $wh  = getimagesize($imgpath);
        $w   = $wh[0];
        $h   = $wh[1];
        $w   = min($w, $h);
        $h   = $w;
        $img = imagecreatetruecolor($w, $h);
        //这一句一定要有
        imagesavealpha($img, true);
        //拾取一个完全透明的颜色,最后一个参数127为全透明
        $bg = imagecolorallocatealpha($img, 255, 255, 255, 127);
        imagefill($img, 0, 0, $bg);
        $r   = $w / 2; //圆半径
        $y_x = $r; //圆心X坐标
        $y_y = $r; //圆心Y坐标
        for ($x = 0; $x < $w; $x++) {
            for ($y = 0; $y < $h; $y++) {
                $rgbColor = imagecolorat($src_img, $x, $y);
                if (((($x - $r) * ($x - $r) + ($y - $r) * ($y - $r)) < ($r * $r))) {
                    imagesetpixel($img, $x, $y, $rgbColor);
                }
            }
        }
        imagepng($img,$imgpath);
        imagedestroy($img);
    }

    //生成分享图
    public function shareImage()
    {
        $host = "http://xiaoshiliu.com/";//此处域名为本地域名
        $type = input('type',1);
        $gonsis_id = input('id') ? input("id") : 81;
        $info = $this->getFind('gonsis',array('id'=>$gonsis_id),'title,content,uid,images');
        $userinfo = $this->getFind('user',array('id'=>$info['uid']),'user_name,avatar');
        if(!$info || !$userinfo)$this->ajaxReturn(1,'信息异常',[$info,$userinfo]);
        $type = $info['images'] ? 1 : 2;
        if($info['images'] !== '[]'){
            $info['images'] = json_decode($info['images'])[0];
        }
        $root = ROOT_PATH;
        $back_path = $root."public/uploads/back_code/{$gonsis_id}.png";
        if(is_file($back_path))@unlink($back_path);
        $path = $root."public/uploads/vcode/{$gonsis_id}.png";
        //此处为微信小程序二维码
        if(!is_file($path)){
            $qrcode = $this->getWxCode('id='.$gonsis_id,'pages/continfo/continfo',97);
            if(!$qrcode['resource'] || isset($qrcode['resource']['data']))return array('status'=>0,'msg'=>'二维码生成失败','data'=>$qrcode['data']);
            $qrcode = $qrcode['resource'];
            $file = fopen($path,'w+');
            fwrite($file,$qrcode);
            fclose($file);
            $path_thumb = Image::open($path);
            $path_thumb->thumb(97,97,$path_thumb::THUMB_SCALING);
            $path_thumb->save($path);
            $this->circleImg($path,file_get_contents($host."public/uploads/vcode/{$gonsis_id}.png"));
        }
        //背景图片
        $backimg = $root.'/public/static/mobile/image/back.png';
        $image = Image::open($backimg);
        $size = 20;
        $font = $root.'/public/static/api/microsoftyahei.ttf';
        $font_1 = $root.'/public/static/api/fangzheng.ttf';
        $font_2 = $root.'/public/static/api/bold.TTF';
        $font_3 = $root.'/public/static/api/EXTRALIGHT.ttf';
        $font_4 = $root.'/public/static/api/HEAVY.ttf';
        $font_5 = $root.'/public/static/api/LIGHT.ttf';
        $font_6 = $root.'/public/static/api/medium.TTF';
        $font_7 = $root.'/public/static/api/REGULAR.ttf';
        $color = '#bb560a';
        list($back_width,$back_height) = $image->size();
        //加宣传文案
        $ad_text = "你的见识与品位值得引起更多人的关注";
        $ad_text_size = imagettfbbox(20, 0, $font_1,$ad_text);
        $ad_width = $ad_text_size[4] - $ad_text_size[6];
        $ad_x = (750 - $ad_width)/2+10;
        $image->text($ad_text,$font_1,20,$color,[$ad_x,185]);
        //加用户头像
        $hea_pic_default = $host.'public/static/mobile/image/tx.png';
        $hea_pic = $userinfo['avatar'];
        if($hea_pic){
            if(!strstr($hea_pic,'http')){
               $hea_pic =  $host.$hea_pic;
            }
        }else{
            $hea_pic = $hea_pic_default;
        }
        $head_pic_path = $root."public/uploads/vcode/{$gonsis_id}_headpic.png";
        $head_pic = fopen($head_pic_path,'w+');
        fwrite($head_pic,file_get_contents($hea_pic));
        fclose($head_pic);
        $avatar_thumb = Image::open($head_pic_path);
        $avatar_thumb = $avatar_thumb->thumb(105,105,$avatar_thumb::THUMB_CENTER);
        $avatar_thumb->save($head_pic_path);
        $this->circleImg($head_pic_path,file_get_contents($host."public/uploads/vcode/{$gonsis_id}_headpic.png"));
        $image->water($head_pic_path,[325,335]);
        @unlink($head_pic_path);
        //加标题
        $title_text = $info['title'];
        $title_width_area = 485;
        $title_size = imagettfbbox($size, 0, $font_2, $title_text);
        $title_width = $title_size[4] - $title_size[6];
        $title_height = $title_size[3] - $title_size[5];
        if($title_width > $title_width_area){
            $title_length = mb_strlen($info['title']);
            $ll = bcmul($title_length,(bcdiv($title_width_area,$title_width,2)));
            $title_text = substr($info['title'],0,$ll);
            //$title_text = substr($title_text,0,bcsub(bcmul($title_length,(bcdiv($title_width_area,$title_width,2))),4)).'...';
            $title_size = imagettfbbox($size, 0, $font_2, $title_text);
            $title_width = $title_size[4] - $title_size[6];
            $title_height = $title_size[3] - $title_size[5];
        }
        $ttile_x = bcdiv(bcsub($back_width,$title_width),2);
        $title_y = 470;
        $image->text($title_text,$font_2,22,$color,array($ttile_x,$title_y));

        //加内容
        $content_width = 440;
        $result = $this->autowrap(20,0,$font_6,$info['content'],$content_width);
        //将每行的文字绘制到背景的坐标即可
        $x = ($back_width - 440)/2 + 10;//初始高度
        //y 高度
        $y = 470+10;
        $line_height = $type == 2 ? 50 : 40;
        foreach ($result['array'] as $k1=>$v1) {
            if($type == 1 && $k1 > 2)continue;
            if($type == 2 && $k1 > 4)continue;
            $y += $line_height;//行距
            if($k1 == 2 ||$k1 == 4){
                $v1 = substr($v1,0,-6).'...';
            }
            $image = $image->text($v1, $font_6, 20, $color, [$x, $y]);
        }
        //加用户昵称
        $y +=50;
        $username = $this->getValue('user',array('id'=>$info['uid']),'user_name');
        $nickname = '-- '.$username;
        $name_text_size = imagettfbbox(20,0,$font_2,$nickname);
        $name_width = $name_text_size[4] - $name_text_size[6];
        $name_x = (750 - $name_width - 140);
        $image->text($nickname,$font,$size,$color,[$name_x,$y]);
        //加内容图片
        $y+=50;
        if($type == 1){
            $content_height = 920;
//            $content_pic = $root.'public/static/admin/img/back.jpg';
            $content_pic = $root.$info['images'];
            $image_thumb = Image::open($content_pic);
            $image_thumb->thumb(372,226,$image_thumb::THUMB_CENTER);
            $thumb_url = $root.'public/uploads/back_code/back_thumb.jpg';
            $image_thumb->save($thumb_url);
            $this->radiusImage($thumb_url,file_get_contents($host.'public/uploads/back_code/back_thumb.jpg'));
            $image_x = (750 - 372)/2 + 39;
            $image->water($thumb_url,[$image_x,$y]);
            @unlink($thumb_url);
        }
        $back_code_path = $root.'public/static/mobile/image/code_back.png';
        $back_code = Image::open($back_code_path);
        list($back_w,$back_h) = $back_code->size();
        $back_code->rotate(2);
        $back_code_path = $root.'public/uploads/back_code/code_back1.png';
        $back_code->save($back_code_path);
        $back_code_x = 750 - $back_w - 30;
        $image->water($back_code_path,[$back_code_x,810]);
        @unlink($back_code_path);
        $image->water($path,[575,920]);//97
        $image->save($back_path);
        $url = $host."public/uploads/back_code/{$gonsis_id}.png";
        echo '<img src="'.$url.'" style="padding:10px;width:750px">';
//        return array('status'=>1,'msg'=>'success','data'=>$back_path);
       // $this->ajaxReturn(0,'生成成功',$url);
//        return $url;
    }
	//文字换行
	public function autowrap($fontsize, $angle, $fontface, $string, $width)
	{
	    // 参数分别是 字体大小, 角度, 字体名称, 字符串, 预设宽度
	    $content = "";
	    // 将字符串拆分成一个个单字 保存到数组 letter 中
	    preg_match_all("/./u", $string, $arr);
	    $letter = $arr[0];
	    $num = 0;
	    $arr = [];
	    foreach ($letter as $k=>$l) {
	        if($num > 5)continue;
	        $teststr = $content . $l;
	        $testbox = imagettfbbox($fontsize, $angle, $fontface, $teststr);
	        if (($testbox[2] > $width) && ($content !== "")) {
	            $content .= PHP_EOL;
	            $num++;
	        }
	        $content .= $l;
	
	    }
	    $array = explode(PHP_EOL,$content);
	    $result['num'] = $num + 1;//一共可以分为多少行
	    $result['array'] = $array;//最终的文字段落数组
	    $result['content'] = $content;//只有换行的文字段落
	    return $result;
	}
}

效果图