edit

src/Lib/Img.php

@@ -607,13 +607,40 @@ class Img
         foreach ($array as $k => $v) {
             $this->_dest['crop'][$k] = $this->getName('_' . $v . '_crop.jpg', $k);
             if ($this->_setup == true || !file_exists($this->_dest['crop'][$k])) {
-                $offset = explode('_',$v);
                 $x = 0;
                 $y = 0;
+
+                $offset = explode('_',$v);
+                if (isset($this->_dropSize[$k]) && $this->_dropSize[$k]) {
+                    $offset[0] += $this->_dropSize[$k];
+                    $offset[1] += $this->_dropSize[$k];
+                }
+                
                 if ($this->_position) {
+                    # 加入根据百分比计算裁图
+                    if ($this->_position[0] <= 0) {
+                        $this->_position[0] = $source_x/2 - $offset[0]/2;
+                    } elseif (strstr($this->_position[0], '%')) {
+                        $this->_position[0] = $source_x * intval(str_replace('%', '', $this->_position[0]))/100;
+                    }
+                    if ($this->_position[1] <= 0) {
+                        $this->_position[1] = $source_y/2 - $offset[1]/2;
+                    } elseif (strstr($this->_position[1], '%')) {
+                        $this->_position[1] = $source_y * intval(str_replace('%', '', $this->_position[1]))/100;
+                    }
                     $x = $this->_position[0];
                     $y = $this->_position[1];
+                } else {
+                    $x = $source_x/2 - $offset[0]/2;
+                    $y = $source_y/2 - $offset[1]/2;
+                }
+                if ($x < 0) {
+                    $x = 0;
                 }
+                if ($y < 0) {
+                    $y = 0;
+                }
+
                 $im = $this->_gd_copy($this->_image,$offset[0],$offset[1],$offset[0],$offset[1],$x,$y);
 
                 imagejpeg($im, $this->_dest['crop'][$k]);