break;
case 2:
// 左下
$this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
$this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
break;
case 3:
// 右上
$this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
$this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
break;
case 4:
// 右下
$this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
$this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
break;
default:
// 默认将水印放到右下,偏移指定像素
$this->mask_pos_x = $this->src_w - $this->mask_w - $this->mask_offset_x;
$this->mask_pos_y = $this->src_h - $this->mask_h - $this->mask_offset_y;
break;
}
}
else
{
switch($this->mask_position)
{
case 1:
// 左上
$this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
$this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
break;
case 2:
// 左下
$this->mask_pos_x = $this->mask_offset_x + $this->img_border_size;
$this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
break;
case 3:
// 右上
$this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
$this->mask_pos_y = $this->mask_offset_y + $this->img_border_size;
break;
case 4:
// 右下
$this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
$this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
break;
default:
// 默认将水印放到右下,偏移指定像素
$this->mask_pos_x = $this->dst_w - $this->mask_w - $this->mask_offset_x - $this->img_border_size;
$this->mask_pos_y = $this->dst_h - $this->mask_h - $this->mask_offset_y - $this->img_border_size;
break;
}
}
}
/**
* 设置字体信息
*/
function _setFontInfo()
{
if(is_numeric($this->font))
{
$this->font_w = imagefontwidth($this->font);
$this->font_h = imagefontheight($this->font);
// 计算水印字体所占宽高
$word_length = strlen($this->mask_word);
$this->mask_w = $this->font_w*$word_length;
$this->mask_h = $this->font_h;
}
else
{
$arr = imagettfbbox ($this->font_size,0, $this->font,$this->mask_word);
$this->mask_w = abs($arr[0] - $arr[2]);
$this->mask_h = abs($arr[7] - $arr[1]);
}
}
/**
* 设置新图尺寸
*
* @param integer $img_w 目标宽度
* @param integer $img_h 目标高度
*/
function _setNewImgSize($img_w, $img_h=null)
{
$num = func_num_args();
if(1 == $num)
