- /**
- * 图片缩放水印类
- *
- * @version 1.0 ;
- *
- */
- class cls_photo
- {
- protected $waterrate = 0.2; //水印图标在图片上的比例
- protected $width = 300; //缩略图默认宽度
- protected $height = 200; //缩略图默认高度
- protected $padding = 5; //水印图到边的距离
- protected $water_mark = "./water.png";
- protected $water_mark_pos = 5;//水印图片位置（1=左上角，2=右上角，3=左下角,4=右下角,5中央）
- protected $watermode = 0;// 0缩略图时不打水印 1缩略图时打水印
- protected $magick_handle;//图片操作句柄
- protected $format = array('jpg','gif','png','jpeg'); // 图片文件格式限定
- protected $smallpic_mode = 2;//默认模式 0为不生成缩略图， 1为裁切缩放 ，2为比例缩放 3为缩放填充模式
- /**
- * 设置图片类参数
- *
- * @param $arg 图片参数 多次可放入数组里 如下
- * @param $protected 参数值
- * array(
- * 'waterrate'=>0.2,
- * 'water_mark'=>'./water.png',
- * 'water_mark_pos'=>4,
- * 'smallpic_mode'=>1
- * );
- * @return ture/false
- */
- public function set_args($arg,$val="")
- {
- $params = array('waterrate','water_mark','water_mark_pos','smallpic_mode','watermode','width','height');
- if(is_array($arg))
- {
- foreach ($arg as $k =>$v)
- {
- if(in_array($k,$params))
- {
- $this->$k = $v;
- }
- }
- }
- else
- {
- if(empty($val))
- {
- return false;
- }
- else
- {
- if(in_array($arg,$params))
- {
- $this->$arg = $val;
- }
- }
- }
- return true;
- }
- /**
- * 图片缩放
- *
- * @param $src_file 源文件路径
- * @param $dst_file 目标文件路径
- * @return 缩略图片路径/false
- */
- public function scale($src_file,$dst_file="")
- {
- $dst_width = $this->width;
- $dst_height = $this->height;
- $mode = $this->smallpic_mode;
- $magic_water_handle = NewMagickWand();
- if (!MagickReadImage($magic_water_handle, $src_file))return false;
- //类型
- $srcext = strtolower(MagickGetImageFormat($magic_water_handle));
- if($srcext=='bmp')
- {
- $srcext = 'jpeg';
- }
- if(!in_array($srcext,$this->format))return false;
- //尺寸
- $src_width = MagickGetImageWidth($magic_water_handle);
- $src_height = MagickGetImageHeight($magic_water_handle);
- //裁切缩放模式
- if($mode == 1)
- {
- $pos_x=$pos_y = 0;//裁切临时位置
- $src_widthc = $src_width;//裁切临时宽度
- $src_heightc = $src_height;//裁切临时高度
- if($src_width/$src_height>$dst_width/$dst_height)
- {
- $src_widthc = $src_height*$dst_width/$dst_height;
- $pos_x = ($src_width-$src_widthc)/2;
- }
- else
- {
- $src_heightc = $src_width*$dst_height/$dst_width;
- $pos_y = ($src_height-$src_heightc)/2;
- }
- MagickCropImage($magic_water_handle,$src_widthc,$src_heightc,$pos_x,$pos_y);//裁切
- //因为MagickCropImage函数后，Gif 图像改，但画布不变
- $this->magick_handle = NewMagickWand();
- MagickNewImage($this->magick_handle,$src_widthc,$src_heightc,'#ffffff');
- MagickSetFormat($this->magick_handle,$srcext);
- MagickCompositeImage($this->magick_handle,$magic_water_handle,MW_OverCompositeOp,0,0);
- //缩放
- MagickScaleImage($this->magick_handle, $dst_width, $dst_height);
- }
- //比例缩放模式
- if($mode == 2)
- {
- if($src_width/$src_height>$dst_width/$dst_height)
- {
- $dst_height=$dst_width*$src_height/$src_width;
- }
- else
- {
- $dst_width=$dst_height*$src_width/$src_height;
- }
- $this->magick_handle=$magic_water_handle;//替换
- MagickScaleImage($this->magick_handle, $dst_width, $dst_height);//缩放
- }
- //缩放填充模式
- if($mode == 3)
- {
- if($src_width/$src_height>$dst_width/$dst_height)
- {
- $dst_heightc=$dst_width*$src_height/$src_width;
- $dst_widthc=$dst_width;
- }
- else
- {
- $dst_widthc=$dst_height*$src_width/$src_height;
- $dst_heightc=$dst_height;
- }
- MagickScaleImage($magic_water_handle, $dst_widthc, $dst_heightc);//缩放
- $this->magick_handle = NewMagickWand();
- MagickNewImage($this->magick_handle,$dst_width,$dst_height,$this->smallpic_bgcolor);
- MagickSetFormat($this->magick_handle,$srcext);
- MagickCompositeImage($this->magick_handle,$magic_water_handle,MW_OverCompositeOp,($dst_width-$dst_widthc)/2,($dst_height-$dst_heightc)/2);
- }
- //打水印
- if($this->watermode == 1)
- {
- $this->set_mark();
- }
- if(empty($dst_file))
- {
- //建立临时文件
- $dst_file = tempnam($_SERVER["SINASRV_CACHE_DIR"],"TMP_IMG");
- }
- MagickWriteImage($this->magick_handle, $dst_file);
- return $dst_file;
- }
- /**
- * 打水印
- *
- * @param $src_file 要打水印的图片路径
- * @param $dst_file 生产水印的文件保存路径，为空则生产随机临时文件
- * @return 水印文件路径/false
- */
- public function water_mark($src_file,$dst_file="")
- {
- $this->magick_handle = NewMagickWand();
- if (!MagickReadImage($this->magick_handle, $src_file))
- return false;
- $this->set_mark();
- if(empty($dst_file))
- {
- //建立临时文件
- $dst_file = tempnam($_SERVER["SINASRV_CACHE_DIR"],"TMP_IMG");
- }
- MagickWriteImage($this->magick_handle, $dst_file);
- return $dst_file;
- }
- /**
- * 对内接口
- * 给图片打水印
- *
- */
- protected function set_mark()
- {
- //尺寸
- $dst_width = MagickGetImageWidth($this->magick_handle);
- $dst_height = MagickGetImageHeight($this->magick_handle);
- //处理水印图
- if ($this->water_mark && is_file($this->water_mark))
- {
- $magic_water_handle = NewMagickWand();
- MagickRemoveImage($magic_water_handle);
- if (MagickReadImage($magic_water_handle, $this->water_mark))
- {
- MagickScaleImage($magic_water_handle, $dst_width*$this->waterrate, $dst_width*$this->waterrate*MagickGetImageHeight($magic_water_handle)/MagickGetImageWidth($magic_water_handle));//缩放水印到图片的1/5
- if ($this->water_mark_pos == 1)
- {
- $left = $this->padding;
- $top = $this->padding;
- }
- elseif ($this->water_mark_pos == 2)
- {
- $left = $dst_width-$this->padding-MagickGetImageWidth($magic_water_handle);
- $top = $this->padding;
- }
- elseif ($this->water_mark_pos == 3)
- {
- $left = $this->padding;
- $top = $dst_height -$this->padding-MagickGetImageHeight($magic_water_handle);
- }
- elseif ($this->water_mark_pos == 4)
- {
- $left = $dst_width-$this->padding-MagickGetImageWidth($magic_water_handle);
- $top =$dst_height -$this->padding-MagickGetImageHeight($magic_water_handle);
- }
- elseif ($this->water_mark_pos == 5)
- {
- $left = ($dst_width-MagickGetImageWidth($magic_water_handle))/2;
- $top =($dst_height -MagickGetImageHeight($magic_water_handle))/2;
- }
- MagickCompositeImage($this->magick_handle,$magic_water_handle,MW_OverCompositeOp,$left,$top);
- }
- }
- }
- }
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