Rails 3 / paperclip / imagemagick - 合并两个图像 [英] Rails 3/ paperclip/ imagemagick - merging two images

问题描述

当用户在我的rails应用程序中上传图像时，imagemagick处理两个转换：

When a user uploads an image in my rails app imagemagick handles two transformations:

 has_attached_file :photo, :styles => { :listsize => "50x50#", :articlesize => "300x300" },

生成一个列表大小（方形50x50px）图像。此时是否可以将此图像与标准透明png合并，使图像看起来更像图标？ （我有png图像，我只是想知道是否可以渲染另一个将这个默认透明png放在：listsize图像上的照片样式）。谢谢

a listsize (square 50x50px) image is produced. Is it possible to at this point merge this image with a standard transparent png that would make the image look more like an icon? (I have the png image, I just want to know if it's possible to render another photo style that has this default transparent png placed over the :listsize image). Thanks

推荐答案

Imagemagick是一个完整的图像处理库，因此一切皆有可能。 Paperclip还支持后期处理。

Imagemagick is an entire image processing library and thus anything is possible. Paperclip also supports post processing.

检查Rmagick文档 http：/ /rmagick.rubyforge.org/

Check the Rmagick documentation http://rmagick.rubyforge.org/

还有关于后处理的Paperclip文档 https://github.com/thoughtbot/paperclip

And also the Paperclip documentation on post processing https://github.com/thoughtbot/paperclip

我个人也建议你研究一下carrierwave https://github.com/jnicklas/carrierwave

I personally would also advise you to look into carrierwave also https://github.com/jnicklas/carrierwave

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