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The Git repository is here.
- Revision:
- 206
- Log:
Initial import of Gullery, an open source photo gallery:
http://nubyonrails.com/pages/gullery
- Author:
- rool
- Date:
- Sun May 20 19:05:59 +0100 2007
- Size:
- 1868 Bytes
| 1 | MiniMagick |
| 2 | ========== |
| 3 | |
| 4 | A ruby wrapper for ImageMagick command line. |
| 5 | |
| 6 | Why? |
| 7 | --- |
| 8 | I was using RMagick and loving it, but it was eating up huge amounts of memory. A simple script like this... |
| 9 | |
| 10 | Magick::read("image.jpg") do |f| |
| 11 | f.write("manipulated.jpg") |
| 12 | end |
| 13 | |
| 14 | ...would use over 100 Megs of Ram. On my local machine this wasn't a problem, but on my hosting server the ruby apps would crash because of their 100 Meg memory limit. |
| 15 | |
| 16 | Solution! |
| 17 | --------- |
| 18 | Using MiniMagick the ruby processes memory remains small (it spawns ImageMagick's command line program mogrify which takes up some memory as well, but is much smaller compared to RMagick) |
| 19 | |
| 20 | MiniMagick gives you access to all the commandline options ImageMagick has (Found here http://www.imagemagick.org/script/mogrify.php) |
| 21 | |
| 22 | Examples |
| 23 | -------- |
| 24 | |
| 25 | Want to make a thumbnail from a file... |
| 26 | |
| 27 | image = MiniMagick::Image.from_file("input.jpg") |
| 28 | image.resize "100x100" |
| 29 | image.write("output.jpg") |
| 30 | |
| 31 | Want to make a thumbnail from a blob... |
| 32 | |
| 33 | image = MiniMagick::Image.from_blob(blob) |
| 34 | image.resize "100x100" |
| 35 | image.write("output.jpg") |
| 36 | |
| 37 | Need to combine several options? |
| 38 | |
| 39 | image = MiniMagick::Image.from_file("input.jpg") |
| 40 | image.combine_options do |c| |
| 41 | c.sample "50%" |
| 42 | c.rotate "-90>" |
| 43 | end |
| 44 | image.write("output.jpg") |
| 45 | |
| 46 | Want to manipulate an image at its source (You won't have to write it out because the transformations are done on that file) |
| 47 | |
| 48 | image = MiniMagick::Image.new("input.jpg") |
| 49 | image.resize "100x100" |
| 50 | |
| 51 | Requirements |
| 52 | ------------ |
| 53 | You must have ImageMagick installed. |
| 54 | |
| 55 | |
| 56 | How To Install |
| 57 | -------------- |
| 58 | (I've only tested this on OS X and Linux) |
| 59 | |
| 60 | I've packaged up MiniMagick as a rails plugin. Just unzip the file to the /vendor/plugins directory of your rails folder and you have access to all the magick. |
| 61 | |
| 62 | MiniMagick does NOT require rails though. All the code you need to use MiniMagick is located in the mini_magick/lib/mini_magick.rb file. |
| 63 | |
| 64 |
