I have a rectangular image for example 30x800 pixels
我有一个矩形图像,例如30x800像素
How I can scale it with paperclip to preserve the aspect ratio to a 100x100 pixel image with borders filling the empty area ?
我如何使用回形针进行缩放以将宽高比保持为100x100像素的图像,边框填充空白区域?
an example : http://www.imagemagick.org/Usage/thumbnails/pad_extent.gif
例如:http://www.imagemagick.org/Usage/thumbnails/pad_extent.gif
1 个解决方案
#1
46
has_attached_file :image, :styles => { :thumb => "100x100>" },
:convert_options => {:thumb => "-gravity center -extent 100x100"}
Or with not white background
或者没有白色背景
has_attached_file :image, :styles => { :thumb => "100x100>" },
:convert_options => {:thumb => "-background red -gravity center -extent 100x100"}
#1
46
has_attached_file :image, :styles => { :thumb => "100x100>" },
:convert_options => {:thumb => "-gravity center -extent 100x100"}
Or with not white background
或者没有白色背景
has_attached_file :image, :styles => { :thumb => "100x100>" },
:convert_options => {:thumb => "-background red -gravity center -extent 100x100"}