kailin/app/Http/Controllers/Api/Video/ExamReportShareImage.php

<?php


namespace App\Http\Controllers\Api\Video;


use App\Facades\Servers\WechatMini\Mini;
use App\Http\Controllers\Api\Api;
use App\Models\Video\Course;
use App\Models\Video\ExamRecord;
use Intervention\Image\Facades\Image;
use Intervention\Image\Gd\Font;

class ExamReportShareImage extends Api
{
    //通过课程id获取课程名称
    public function get_share_image(ExamRecord $examRecordModel, Course $courseModel)
    {
        // 登录信息
        $uid 					= $this->checkLogin();
        // 接收参数
        $courseId 					= request('course_id',0);

        $fontPath	= public_path().'/fonts/msyh14.ttf';// 指定字体文件路径

        //学习课程名称
        $courseName = $courseModel->query()->where([['id','=',$courseId]])->value('name');
        $courseName = str_replace(' ', '', $courseName); //去除课程名称中的空格

        //获取总积分(客户)
        $totalScore = $examRecordModel->query()->where([['course_id','=',$courseId], ['custom_uid','=',$uid]])->sum('get_score');

        try {
            // 加载图片
            $image = Image::make(public_path('uploads/images/default/') . 'learn_report_share_base.png');

            $lineHeight = 30; // 行高
            $fontSize = 24;
            $maxWidth = 330;
            // 课程名称过长的时候需要截断
            $lines = $this->truncateText($courseName, $fontPath, $fontSize, $maxWidth);

            $y = 170; // 初始 y 坐标
            foreach ($lines as $line) {
                $image->text($line, 30, $y, function ($font) use ($fontPath, $fontSize) {
                    $font->file($fontPath);
                    $font->size($fontSize);
                    $font->color('#2B3D7c');
                    $font->align('left');
                });
                $y += $lineHeight; // 下一行的 y 坐标
            }

            // 给图片写入文字(总积分)
            $image->text($courseName, 20, 120, function (Font $font) use ($fontPath) {
                $font->file($fontPath);        // 字体文件地址
                $font->size(24);            // 字体大小
                $font->color('#2B3D7c');
                $font->align('left');
            });

            // 给图片写入文字
            $image->text($totalScore, 40, 260, function (Font $font) use ($fontPath) {
                $font->file($fontPath);        // 字体文件地址
                $font->size(24);            // 字体大小
                $font->color('#E86D8F');
                $font->align('center');
            });

            //TODO 测试的时候用,接口返回的时候可以关掉
            /////开始
            //$outputImagePath = public_path('uploads/images/default/output_exam.jpg'); // 替换为你希望保存的路径
            //$image->save($outputImagePath);
            /////结束

            $image = $image->encode('jpg', 90)->__toString();
            // 转base64
            $base64 = 'data:image/jpg;base64,' . base64_encode($image);

            return 					json_send(['code'=>'success','msg'=>'图片生成成功','data'=>$base64]);
        } catch (\Throwable $th) {
            // 返回路径
            //return 			['error'=>$th->getMessage()];
            return json_send(['code'=>'error','msg'=>'图片生成失败', 'errorCode'=>$th->getMessage()]);
        }
    }

    //获取课后分析的答题数量
    public function get_after_study_report_image_share(ExamRecord $examRecordModel, $scene)
    {

        // 登录信息
        $uid 					= $this->checkLogin();
        // 接收参数
        $courseId 					= request('course_id',0);

        //获取总积分(客户)
        $totalQuestionNum = $examRecordModel->query()->where([['course_id','=',$courseId], ['custom_uid','=',$uid]])->sum('question_total');
        $correctNum = $examRecordModel->query()->where([['course_id','=',$courseId], ['custom_uid','=',$uid]])->sum('isanswer_total');
        $inCorrectNum = $totalQuestionNum - $correctNum;
        $accuracy = (int) $correctNum/$totalQuestionNum;

        $url							= 'pages/index/index';
        $position						= 'bottom-left';
        $size						    = request('size',150);
        $scene						    = request('scene',0);

        $fontPath	= public_path().'/fonts/msyh14.ttf';// 指定字体文件路径

        try {
            // 加载图片
            $image = Image::make(public_path('uploads/images/default/') . 'analysis_report_share_base.jpg');

            // 生成小程序二维码
            $qrcode							= Mini::getUnlimit($scene,['page'=>$url,'width'=>$size,'is_hyaline'=>true]);
            // 错误提示
            if( isset($qrcode['error']) )	return $qrcode;

            if ($size < 280){
                // 加载图片 压缩
                $qrcode							= Image::make($qrcode)->resize($size,$size);
            }else{
                // 加载图片
                $qrcode							= Image::make($qrcode);
            }

            $image->insert($qrcode, $position,20,20);

            // 给图片写入文字总题数：
            $image->text($totalQuestionNum.'题', 260, 300, function (Font $font) use ($fontPath) {
                $font->file($fontPath);        // 字体文件地址
                $font->size(24);            // 字体大小
                $font->color('#FF7B01');
                $font->align('left');
            });

            // 给图片写入文字正确题数
            $image->text($correctNum.'题', 290, 388, function (Font $font) use ($fontPath) {
                $font->file($fontPath);        // 字体文件地址
                $font->size(24);            // 字体大小
                $font->color('#0E670F');
                $font->align('left');
            });

            // 给图片写入文字错误题数
            $image->text($inCorrectNum.'题', 290, 476, function (Font $font) use ($fontPath) {
                $font->file($fontPath);        // 字体文件地址
                $font->size(24);            // 字体大小
                $font->color('#FF0101');
                $font->align('left');
            });

            // 给图片写入文字 正确率
            $image->text($accuracy.'%', 100, 582, function (Font $font) use ($fontPath) {
                $font->file($fontPath);        // 字体文件地址
                $font->size(36);            // 字体大小
                $font->color('#FA9517');
                $font->align('left');
            });

            //插入二维码图片

            $image = $image->encode('jpg', 90)->__toString();
            // 转base64
            $base64 = 'data:image/jpg;base64,' . base64_encode($image);

            return 					json_send(['code'=>'success','msg'=>'图片生成成功','data'=>$base64]);
        } catch (\Throwable $th) {
            // 返回路径
            //return 			['error'=>$th->getMessage()];
            return json_send(['code'=>'error','msg'=>'图片生成失败', 'errorCode'=>$th->getMessage()]);
        }


    }

    // 截断文字并添加省略号
    function truncateText($text, $fontFile, $fontSize, $maxWidth) {
        $lines = [];
        $textLength = mb_strlen($text);
        $charIndex = 0;

        // 第一行
        $firstLine = '';
        while ($charIndex < $textLength) {
            $firstLine .= mb_substr($text, $charIndex, 1);
            $testBox = imagettfbbox($fontSize, 0, $fontFile, $firstLine);
            $testWidth = abs($testBox[2] - $testBox[0]);

            if ($testWidth > $maxWidth) {
                // 第一行超出宽度，截断
                $firstLine = mb_substr($firstLine, 0, -1);
                break;
            }

            $charIndex++;
        }

        $lines[] = $firstLine;

        // 第二行
        if ($charIndex < $textLength) {
            $secondLine = mb_substr($text, $charIndex);
            $testBox = imagettfbbox($fontSize, 0, $fontFile, $secondLine);
            $testWidth = abs($testBox[2] - $testBox[0]);

            if ($testWidth > $maxWidth) {
                // 第二行超出宽度，截断并添加省略号
                while ($charIndex < $textLength) {
                    $secondLine = mb_substr($secondLine, 0, -1);
                    $testBox = imagettfbbox($fontSize, 0, $fontFile, $secondLine);
                    $testWidth = abs($testBox[2] - $testBox[0]);

                    if ($testWidth <= $maxWidth) {
                        $secondLine .= '...';
                        break;
                    }
                }
            }

            $lines[] = $secondLine;
        }

        return $lines;
    }


}