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About
GD Imager (gd_imager.pl) - the script which allows to modify images
in passing
It will help you to arrange you image archive.
It's free!
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News
June 6 2003. The 1.2 version of GD Imager (first release) is available.
You can download it here.
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Download
How to use
Installation instructions:
1. Copy a file gd_imager.pl in directories in which execution
of cgi scripts is authorized
2. Set to a file gd_imager.pl execution rights. For
example by the command "chmod 755 gd_imager.pl"
3. Whether check up module GD if is not present establish
its by the command "ppm install GD", from a command line
Example of a call:
http://www.site.com/cgi-bin/gd_imager.pl?img=/photo/1.jpg&width=150
img=/photo/1.jpg - specifies the initial image
width=150 - specifies the resulting width of the image
As a result of work of a script - the picture comes back, to make out
a call on a site it is necessary as follows:
<img src="http://www.site.com/cgi-bin/gd_imager.pl?img=/photo/1.jpg&width=150">
1. Opportunities of scaling
Source image (example):
Variants of a call:
?img =/photo/1.jpg&width=150 - for reception of images of
the set width (150)
Result image:
?img =/photo/1.jpg&height=200 - for reception of images of
the set height (200)
?img =/photo/1.jpg&width=150&height=200 - for reception
of images of height it is no more 200 and width no more than 150
2. Mounting of pictures with the set substrate
Base image (example png):
Variants of a call:
Without direct indications of the sizes of the image
?img =/photo/1.jpg&base =/img/base.png - for imposing
scaling images on a file a substrate /img/base.png.
Result image:
?img =/photo/1.jpg&base =/img/base.png&border=5 - for
imposing scaling images on a file a substrate /img/base.png,
thus the image will be scaling for a space 5.
Result image:
With the indication of the size scaling images
?img =/photo/1.jpg&base =/img/base.png&width=100 - the
image is scaled on width on 100 pixels and then imposed on
a file/img/base.png
Result image:
With alignment
?img =/photo/1.jpg&base =/img/base.png&width=100&align=right
- to scale, impose, level by a right edge
Result image:
With spaces
?img =... &base =... &width =... &align=right&dx=5
- to scale, impose, level by a right edge with a space 5
Result image:
?img =/photo/1.jpg&base =/img/base.png&width=100&height=120
- to scale the image that it was placed about a rectangular 100x120 pixels
(a proportion are observed), to impose on a file /img/base.png
?img =... &base =... &width =... &align=right&dx=5 -
- to scale to impose, level by a right edge with a space 5
The parameter "align" - operates alignment across.
Allowable values left, right, center, by default - center
The parameter "valign" - operates alignment on a vertical.
Allowable values top, bottom, center, by default - center
Result image (valign=top&dy=5):
The parameter "border" - sets spaces (from two sides or
from one of the sides, depending on modes of alignment)
The parameter "dx" - sets a space across (from that side
with which there is an alignment or concerning the center of the
image if alignment on the center)
The parameter "dy" - sets a space on a vertical, is
similar "dx"
3. Use of files of a configuration
It is possible to use config files, for the description of parameters.
The example of parameters of a call:
?img=/photo/1.jpg&conf=../conf/img
In a file ../conf/img (the way determinzting relative of a
script directory) is the information on parameters of processing
of the image.
The example of contents of a file:
width = 107
height = 103
base = "/i/base.png"
dx = 6
dy = 11
Processing of images in cases of use of files of configurations
is absolutely identical to the task of these parameters in a line
of a call
4. Caching opportunity
The caching opportunity can be included only from a file
of a configuration. The parameter cash_dir sets a way to a cashe directory
(for each of configuration files, it there should be a directory)
The example of a configuration file:
width = 107
height = 103
base = "/i/base.png"
dx = 6
dy = 11
cash_dir = "../cash"
The way to cache is set relating to an arrangement of a script
gd_imager.pl
Additional parameters cash_time - time of updating cache (in
seconds). + Value by default - 86400 (day). cash_slash - sequence a
symbol for replacement "/" in a name of a file at record in cache.
Value by default - "--".
( /i/1.jpg -> --i--1.jpg )
The example of a configuration file:
width = 107
height = 103
base = "/i/base.png"
dx = 6
dy = 11
cash_dir = "../cash"
cash_slash = "--"
cash_time = 800
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Examples
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