Discuz修复PNG透明图片生成缩略图时背景变黑的BUG
2022/10/22 07:12:12
解决手机版png透明图片黑底问题
打开 source\class\class_image.php
找到这个函数（所有修改都在这个函数内）下边找到改为找到（三处）下边添加
打开 source\class\class_image.php
找到这个函数（所有修改都在这个函数内）
- function Thumb_GD() {
- $copy_photo = imagecreatetruecolor($this->imginfo['width'], $this->imginfo['height']);imagecopy($copy_photo, $attach_photo , 0, 0, 0, 0, $this->imginfo['width'], $this->imginfo['height']);$attach_photo = $copy_photo;
- if($this->imginfo['mime'] != 'image/png') { $copy_photo = imagecreatetruecolor($this->imginfo['width'], $this->imginfo['height']); imagecopy($copy_photo, $attach_photo , 0, 0, 0, 0, $this->imginfo['width'], $this->imginfo['height']); $attach_photo = $copy_photo;}
- $thumb_photo = imagecreatetruecolor
- if($this->imginfo['mime'] == 'image/png') { imagealphablending($thumb_photo, false); imagesavealpha($thumb_photo, true);}