From e3ba43ee0404ad8ea22c1dc2e2cae143c407ccf7 Mon Sep 17 00:00:00 2001
From: pacozhong <pacozhong@qq.com>
Date: Wed, 5 Nov 2014 10:34:09 +0800
Subject: [PATCH] =?UTF-8?q?fix=20bug=20#11=20:=E9=80=8F=E6=98=8E=E8=83=8C?=
 =?UTF-8?q?=E6=99=AF=E7=9A=84png=E9=9C=80=E8=A6=81=E4=BD=BF=E7=94=A8images?=
 =?UTF-8?q?avealpha=E4=BF=9D=E5=AD=98alpha=E9=80=9A=E9=81=93=E6=89=8D?=
 =?UTF-8?q?=E8=83=BD=E4=B8=8D=E5=8F=98=E6=88=90=E8=83=8C=E6=99=AF=E9=BB=91?=
 =?UTF-8?q?=E8=89=B2?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 doitphp/library/Image.php | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/doitphp/library/Image.php b/doitphp/library/Image.php
index da5d6a9..0de894c 100644
--- a/doitphp/library/Image.php
+++ b/doitphp/library/Image.php
@@ -208,6 +208,8 @@ protected function _parseImageInfo($url) {
 
             case 3:
                 $this->_image = imagecreatefrompng($url);
+                //bug fix #11 :透明背景的png需要使用imagesavealpha保存alpha通道才能不变成背景黑色
+                imagesavealpha($this->_image, true);
                 $this->_type  = 'png';
                 break;