<?php // +---------------------------------------------------------------------- // | ThinkPHP [ WE CAN DO IT JUST THINK IT ] // +---------------------------------------------------------------------- // | Copyright (c) 2006-2015 http://thinkphp.cn All rights reserved. // +---------------------------------------------------------------------- // | Licensed ( http://www.apache.org/licenses/LICENSE-2.0 ) // +---------------------------------------------------------------------- // | Author: yunwuxin <[email protected]> // +---------------------------------------------------------------------- namespace Img; use think\image\Exception as ImageException; use think\image\gif\Gif; class ShuiYin { /* 缩略图相关常量定义 */ const THUMB_SCALING = 1; //常量，标识缩略图等比例缩放类型 const THUMB_FILLED = 2; //常量，标识缩略图缩放后填充类型 const THUMB_CENTER = 3; //常量，标识缩略图居中裁剪类型 const THUMB_NORTHWEST = 4; //常量，标识缩略图左上角裁剪类型 const THUMB_SOUTHEAST = 5; //常量，标识缩略图右下角裁剪类型 const THUMB_FIXED = 6; //常量，标识缩略图固定尺寸缩放类型 /* 水印相关常量定义 */ const WATER_NORTHWEST = 1; //常量，标识左上角水印 const WATER_NORTH = 2; //常量，标识上居中水印 const WATER_NORTHEAST = 3; //常量，标识右上角水印 const WATER_WEST = 4; //常量，标识左居中水印 const WATER_CENTER = 5; //常量，标识居中水印 const WATER_EAST = 6; //常量，标识右居中水印 const WATER_SOUTHWEST = 7; //常量，标识左下角水印 const WATER_SOUTH = 8; //常量，标识下居中水印 const WATER_SOUTHEAST = 9; //常量，标识右下角水印 /* 翻转相关常量定义 */ const FLIP_X = 1; //X轴翻转 const FLIP_Y = 2; //Y轴翻转 /** * 图像资源对象 * * @var resource */ protected $im; /** @var Gif */ protected $gif; /** * 图像信息，包括 width, height, type, mime, size * * @var array */ protected $info; protected function __construct(\SplFileInfo $file) { //获取图像信息 $info = @getimagesize($file->getPathname()); //检测图像合法性 if (false === $info || (IMAGETYPE_GIF === $info[2] && empty($info['bits']))) { throw new ImageException('Illegal image file'); } //设置图像信息 $this->info = [ 'width' => $info[0], 'height' => $info[1], 'type' => image_type_to_extension($info[2], false), 'mime' => $info['mime'], ]; //打开图像 if ('gif' == $this->info['type']) { $this->gif = new Gif($file->getPathname()); $this->im = @imagecreatefromstring($this->gif->image()); } else { $fun = "imagecreatefrom{$this->info['type']}"; $this->im = @$fun($file->getPathname()); } if (empty($this->im)) { throw new ImageException('Failed to create image resources!'); } } /** * 打开一个图片文件 * @param \SplFileInfo|string $file * @return Image */ public static function open($file) { if (is_string($file)) { $file = new \SplFileInfo($file); } if (!$file->isFile()) { throw new ImageException('image file not exist'); } return new self($file); } /** * 保存图像 * @param string $pathname 图像保存路径名称 * @param null|string $type 图像类型 * @param int $quality 图像质量 * @param bool $interlace 是否对JPEG类型图像设置隔行扫描 * @return $this */ public function getBase64() { ob_start(); imagepng($this->im); $imageData = base64_encode(ob_get_clean()); return 'data:image/png;base64,' . $imageData; } public function save($pathname, $type = null, $quality = 80, $interlace = true) { //自动获取图像类型 if (is_null($type)) { $type = $this->info['type']; } else { $type = strtolower($type); } //保存图像 if ('jpeg' == $type || 'jpg' == $type) { //JPEG图像设置隔行扫描 imageinterlace($this->im, $interlace); imagejpeg($this->im, $pathname, $quality); } elseif ('gif' == $type && !empty($this->gif)) { $this->gif->save($pathname); } elseif ('png' == $type) { //设定保存完整的 alpha 通道信息 imagesavealpha($this->im, true); //ImagePNG生成图像的质量范围从0到9的 imagepng($this->im, $pathname, min((int) ($quality / 10), 9)); } else { $fun = 'image' . $type; $fun($this->im, $pathname); } return $this; } /** * 返回图像宽度 * @return int 图像宽度 */ public function width() { return $this->info['width']; } /** * 返回图像高度 * @return int 图像高度 */ public function height() { return $this->info['height']; } /** * 返回图像类型 * @return string 图像类型 */ public function type() { return $this->info['type']; } /** * 返回图像MIME类型 * @return string 图像MIME类型 */ public function mime() { return $this->info['mime']; } /** * 返回图像尺寸数组 0 - 图像宽度，1 - 图像高度 * @return array 图像尺寸 */ public function size() { return [$this->info['width'], $this->info['height']]; } /** * 旋转图像 * @param int $degrees 顺时针旋转的度数 * @return $this */ public function rotate($degrees = 90) { do { $img = imagerotate($this->im, -$degrees, imagecolorallocatealpha($this->im, 0, 0, 0, 127)); imagedestroy($this->im); $this->im = $img; } while (!empty($this->gif) && $this->gifNext()); $this->info['width'] = imagesx($this->im); $this->info['height'] = imagesy($this->im); return $this; } /** * 翻转图像 * @param integer $direction 翻转轴,X或者Y * @return $this */ public function flip($direction = self::FLIP_X) { //原图宽度和高度 $w = $this->info['width']; $h = $this->info['height']; do { $img = imagecreatetruecolor($w, $h); switch ($direction) { case self::FLIP_X: for ($y = 0; $y < $h; $y++) { imagecopy($img, $this->im, 0, $h - $y - 1, 0, $y, $w, 1); } break; case self::FLIP_Y: for ($x = 0; $x < $w; $x++) { imagecopy($img, $this->im, $w - $x - 1, 0, $x, 0, 1, $h); } break; default: throw new ImageException('不支持的翻转类型'); } imagedestroy($this->im); $this->im = $img; } while (!empty($this->gif) && $this->gifNext()); return $this; } /** * 裁剪图像 * * @param integer $w 裁剪区域宽度 * @param integer $h 裁剪区域高度 * @param integer $x 裁剪区域x坐标 * @param integer $y 裁剪区域y坐标 * @param integer $width 图像保存宽度 * @param integer $height 图像保存高度 * * @return $this */ public function crop($w, $h, $x = 0, $y = 0, $width = null, $height = null) { //设置保存尺寸 empty($width) && $width = $w; empty($height) && $height = $h; do { //创建新图像 $img = imagecreatetruecolor($width, $height); // 调整默认颜色 $color = imagecolorallocate($img, 255, 255, 255); imagefill($img, 0, 0, $color); //裁剪 imagecopyresampled($img, $this->im, 0, 0, $x, $y, $width, $height, $w, $h); imagedestroy($this->im); //销毁原图 //设置新图像 $this->im = $img; } while (!empty($this->gif) && $this->gifNext()); $this->info['width'] = (int) $width; $this->info['height'] = (int) $height; return $this; } /** * 生成缩略图 * * @param integer $width 缩略图最大宽度 * @param integer $height 缩略图最大高度 * @param int $type 缩略图裁剪类型 * * @return $this */ public function thumb($width, $height, $type = self::THUMB_SCALING) { //原图宽度和高度 $w = $this->info['width']; $h = $this->info['height']; /* 计算缩略图生成的必要参数 */ switch ($type) { /* 等比例缩放 */ case self::THUMB_SCALING: //原图尺寸小于缩略图尺寸则不进行缩略 if ($w < $width && $h < $height) { return $this; } //计算缩放比例 $scale = min($width / $w, $height / $h); //设置缩略图的坐标及宽度和高度 $x = $y = 0; $width = $w * $scale; $height = $h * $scale; break; /* 居中裁剪 */ case self::THUMB_CENTER: //计算缩放比例 $scale = max($width / $w, $height / $h); //设置缩略图的坐标及宽度和高度 $w = $width / $scale; $h = $height / $scale; $x = ($this->info['width'] - $w) / 2; $y = ($this->info['height'] - $h) / 2; break; /* 左上角裁剪 */ case self::THUMB_NORTHWEST: //计算缩放比例 $scale = max($width / $w, $height / $h); //设置缩略图的坐标及宽度和高度 $x = $y = 0; $w = $width / $scale; $h = $height / $scale; break; /* 右下角裁剪 */ case self::THUMB_SOUTHEAST: //计算缩放比例 $scale = max($width / $w, $height / $h); //设置缩略图的坐标及宽度和高度 $w = $width / $scale; $h = $height / $scale; $x = $this->info['width'] - $w; $y = $this->info['height'] - $h; break; /* 填充 */ case self::THUMB_FILLED: //计算缩放比例 if ($w < $width && $h < $height) { $scale = 1; } else { $scale = min($width / $w, $height / $h); } //设置缩略图的坐标及宽度和高度 $neww = $w * $scale; $newh = $h * $scale; $x = $this->info['width'] - $w; $y = $this->info['height'] - $h; $posx = ($width - $w * $scale) / 2; $posy = ($height - $h * $scale) / 2; do { //创建新图像 $img = imagecreatetruecolor($width, $height); // 调整默认颜色 $color = imagecolorallocate($img, 255, 255, 255); imagefill($img, 0, 0, $color); //裁剪 imagecopyresampled($img, $this->im, $posx, $posy, $x, $y, $neww, $newh, $w, $h); imagedestroy($this->im); //销毁原图 $this->im = $img; } while (!empty($this->gif) && $this->gifNext()); $this->info['width'] = (int) $width; $this->info['height'] = (int) $height; return $this; /* 固定 */ case self::THUMB_FIXED: $x = $y = 0; break; default: throw new ImageException('不支持的缩略图裁剪类型'); } /* 裁剪图像 */ return $this->crop($w, $h, $x, $y, $width, $height); } /** * 添加水印 * * @param string $source 水印图片路径 * @param int $locate 水印位置 * @param int $alpha 透明度 * @return $this */ public function waterBase64($source,$x,$y) { $alpha = 100; $imageSize = getimagesize($source); $wide=$imageSize[0]; $high=$imageSize[1]; $source = str_replace('data:image/png;base64,','',$source); $imageString = base64_decode($source); $water = imagecreatefromstring($imageString); /* 设定水印位置 */ do { //添加水印 $src = imagecreatetruecolor($wide, $high); // 调整默认颜色 $color = imagecolorallocate($src, 255, 255, 255); imagefill($src, 0, 0, $color); imagecopy($src, $this->im, 0, 0, $x, $y, $wide, $high); imagecopy($src, $water, 0, 0, 0, 0, $wide, $high); imagecopymerge($this->im, $src, $x, $y, 0, 0, $wide, $high, $alpha); //销毁零时图片资源 imagedestroy($src); } while (!empty($this->gif) && $this->gifNext()); //销毁水印资源 imagedestroy($water); return $this; } public function waterUrl($source,$x,$y) { $alpha = 100; $imageSize = getimagesize($source); $wide=$imageSize[0]; $high=$imageSize[1]; $source1 = file_get_contents($source); $water = imagecreatefromstring($source1); /* 设定水印位置 */ do { //添加水印 $src = imagecreatetruecolor($wide, $high); // 调整默认颜色 $color = imagecolorallocate($src, 255, 255, 255); imagefill($src, 0, 0, $color); imagecopy($src, $this->im, 0, 0, $x, $y, $wide, $high); imagecopy($src, $water, 0, 0, 0, 0, $wide, $high); imagecopymerge($this->im, $src, $x, $y, 0, 0, $wide, $high, $alpha); //销毁零时图片资源 imagedestroy($src); } while (!empty($this->gif) && $this->gifNext()); //销毁水印资源 imagedestroy($water); return $this; } public function water($source,$x,$y) { $alpha = 100; if (!is_file($source)) { throw new ImageException('水印图像不存在'); } //获取水印图像信息 $info = getimagesize($source); if (false === $info || (IMAGETYPE_GIF === $info[2] && empty($info['bits']))) { throw new ImageException('非法水印文件'); } //创建水印图像资源 $fun = 'imagecreatefrom' . image_type_to_extension($info[2], false); $water = $fun($source); //设定水印图像的混色模式 imagealphablending($water, true); /* 设定水印位置 */ do { //添加水印 $src = imagecreatetruecolor($info[0], $info[1]); // 调整默认颜色 $color = imagecolorallocate($src, 255, 255, 255); imagefill($src, 0, 0, $color); imagecopy($src, $this->im, 0, 0, $x, $y, $info[0], $info[1]); imagecopy($src, $water, 0, 0, 0, 0, $info[0], $info[1]); imagecopymerge($this->im, $src, $x, $y, 0, 0, $info[0], $info[1], $alpha); //销毁零时图片资源 imagedestroy($src); } while (!empty($this->gif) && $this->gifNext()); //销毁水印资源 imagedestroy($water); return $this; } /** * 图像添加文字 * * @param string $text 添加的文字 * @param string $font 字体路径 * @param integer $size 字号 * @param string $color 文字颜色 * @param int $locate 文字写入位置 * @param integer $offset 文字相对当前位置的偏移量 * @param integer $angle 文字倾斜角度 * * @return $this * @throws ImageException */ public function text($text, $font, $size, $offset = 0, $angle = 0) { $locate = self::WATER_NORTHWEST; $color = '#00000000'; if (!is_file($font)) { throw new ImageException("不存在的字体文件：{$font}"); } //获取文字信息 $info = imagettfbbox($size, $angle, $font, $text); $minx = min($info[0], $info[2], $info[4], $info[6]); $maxx = max($info[0], $info[2], $info[4], $info[6]); $miny = min($info[1], $info[3], $info[5], $info[7]); $maxy = max($info[1], $info[3], $info[5], $info[7]); /* 计算文字初始坐标和尺寸 */ $x = $minx; $y = abs($miny); $w = $maxx - $minx; $h = $maxy - $miny; /* 设定文字位置 */ switch ($locate) { /* 右下角文字 */ case self::WATER_SOUTHEAST: $x += $this->info['width'] - $w; $y += $this->info['height'] - $h; break; /* 左下角文字 */ case self::WATER_SOUTHWEST: $y += $this->info['height'] - $h; break; /* 左上角文字 */ case self::WATER_NORTHWEST: // 起始坐标即为左上角坐标，无需调整 break; /* 右上角文字 */ case self::WATER_NORTHEAST: $x += $this->info['width'] - $w; break; /* 居中文字 */ case self::WATER_CENTER: $x += ($this->info['width'] - $w) / 2; $y += ($this->info['height'] - $h) / 2; break; /* 下居中文字 */ case self::WATER_SOUTH: $x += ($this->info['width'] - $w) / 2; $y += $this->info['height'] - $h; break; /* 右居中文字 */ case self::WATER_EAST: $x += $this->info['width'] - $w; $y += ($this->info['height'] - $h) / 2; break; /* 上居中文字 */ case self::WATER_NORTH: $x += ($this->info['width'] - $w) / 2; break; /* 左居中文字 */ case self::WATER_WEST: $y += ($this->info['height'] - $h) / 2; break; default: /* 自定义文字坐标 */ if (is_array($locate)) { list($posx, $posy) = $locate; $x += $posx; $y += $posy; } else { throw new ImageException('不支持的文字位置类型'); } } /* 设置偏移量 */ if (is_array($offset)) { $offset = array_map('intval', $offset); list($ox, $oy) = $offset; } else { $offset = intval($offset); $ox = $oy = $offset; } /* 设置颜色 */ if (is_string($color) && 0 === strpos($color, '#')) { $color = str_split(substr($color, 1), 2); $color = array_map('hexdec', $color); if (empty($color[3]) || $color[3] > 127) { $color[3] = 0; } } elseif (!is_array($color)) { throw new ImageException('错误的颜色值'); } do { /* 写入文字 */ $col = imagecolorallocatealpha($this->im, $color[0], $color[1], $color[2], $color[3]); imagettftext($this->im, $size, $angle, $x + $ox, $y + $oy, $col, $font, $text); } while (!empty($this->gif) && $this->gifNext()); return $this; } /** * 切换到GIF的下一帧并保存当前帧 */ protected function gifNext() { ob_start(); ob_implicit_flush(0); imagegif($this->im); $img = ob_get_clean(); $this->gif->image($img); $next = $this->gif->nextImage(); if ($next) { imagedestroy($this->im); $this->im = imagecreatefromstring($next); return $next; } else { imagedestroy($this->im); $this->im = imagecreatefromstring($this->gif->image()); return false; } } /** * 析构方法，用于销毁图像资源 */ public function __destruct() { empty($this->im) || imagedestroy($this->im); } }
$base64 = 'base64图片'
$image = \Img\ShuiYin::open('../template.png');#模板
$image->text('2222', root_path() . '/wryh.ttf', 22, [0, 0]);
$image->text('2222', root_path() . '/wryh.ttf', 22, [30, 5]);
$image->waterUrl('图片路径', 1, 100);
$image->waterBase64($base64, 550, 300);
$data = $image->getBase64();
标签：info,return,base64,水印,height,width,im,图像,php From： https://www.cnblogs.com/chengfengchi/p/17566228.html