修复文字水印透明度不生效

application/WaterMask.php

@@ -285,7 +285,8 @@ class Imgs
                 return array('code' => false, 'msg' => '请给正确的字体颜色');
             }
 
-            $def['color'] = imagecolorallocatealpha($dst_img, $rgb[0], $rgb[1], $rgb[2], $rgb[3]);
+            // ceil(127 - 127 * $rgb[3]) 将CSS中的Alpha 0-1 转换为PHP Alpha 127-0 并取整
+            $def['color'] = imagecolorallocatealpha($dst_img, $rgb[0], $rgb[1], $rgb[2], ceil(127 - 127 * $rgb[3]));
             imagettftext(
                 $dst_img,
                 $def['fontSize'],

application/process.php

@@ -39,7 +39,7 @@ function water($source)
                 'name' => $source,
                 'font' => APP_ROOT . $config['textFont'],
                 'fontSize' => $config['textSize'],
-                'color' => $config['textColor'],
+                'color' => str_replace(array('rgba', '(', ')'), '', $config['textColor']),
             ];
             Imgs::setWater($source, $arr);
         }