Commit 16a91140 authored by Joakim Verona's avatar Joakim Verona
Browse files

documentation changes

parent 3234a340
......@@ -139,6 +139,21 @@
* Makefile.in (install-arch-indep): Delete any old info .gz files first.
2010-06-12 Joakim Verona <joakim@verona.se>
* image.c: Add support for ImageMagick. When HAVE_IMAGEMAGICK is
defined:
(imagemagick_image_p): New function to test for ImageMagic img.
(imagemagick_load): New function to load ImageMagick img.
(imagemagick_load_image): New function, helper for imagemagick_load
(imagemagick-types): New function.
(Qimagemagick): New Lisp_object.
(imagemagick-render-type): New var, decides which renderer to use
* image.el:
(imagemagick-types-inhibit): New var.
(imagemagick-register-types): New function.
* config.in, Makefile.in, configure.in
2010-06-11 Glenn Morris <rgm@gnu.org>
* configure.in (--without-compress-info): New option.
......
......@@ -64,7 +64,7 @@ Works like for "gif" support. Thanks to Juri Linkov.
* TODO decide what to do with some uncommitted imagemagick support
functions for image size etc.
* TODO Test with more systems
Tested on Fedora 12 so far, and the libmagick that ships with it.
Tested on Fedora 12, Fedora 14 so far, and the libmagick that ships with it.
Ubuntu 8.04 was also tested, but it seems it ships a broken
ImageMagick.
......@@ -77,7 +77,7 @@ Is handled by configure now
* Some nits from Stefan Monnier
I just took a quick look at the code and I see the following nits to fix:
** TODO obviously a merge will have to come with a good ChangeLog.
** DONE obviously a merge will have to come with a good ChangeLog.
** DONE also the merge will need to come with documentation. Maybe not in the
Texinfo form yet, but at least in the etc/NEWS with enough info that
describes the `scale' and other such arguments that someone can start
......@@ -147,19 +147,5 @@ as TIFF or DJVM, to view.
The image-metadata function can be used to retrieve the total number
of images in an image bundle. This is simmilar to how GIF files work.
* Changelog entry
2010-06-12 Joakim Verona <joakim@verona.se>
* image.c: Add support for ImageMagick. When HAVE_IMAGEMAGICK is
defined:
(imagemagick_image_p): New function to test for ImageMagic img.
(imagemagick_load): New function to load ImageMagick img.
(imagemagick_load_image): New function, helper for imagemagick_load
(imagemagick-types): New function.
(Qimagemagick): New Lisp_object.
* image.el:
(imagemagick-types-inhibit): New var.
(imagemagick-register-types): New function.
* config.in, Makefile.in, configure.in
* Manual entry
nothing yet, but the NEWS entry could be adapted.
......@@ -4039,6 +4039,7 @@ displayed (@pxref{Display Feature Testing}).
* GIF Images:: Special features for GIF format.
* TIFF Images:: Special features for TIFF format.
* PostScript Images:: Special features for PostScript format.
* ImageMagick Images:: Special features available through ImageMagick.
* Other Image Types:: Various other formats are supported.
* Defining Images:: Convenient ways to define an image for later use.
* Showing Images:: Convenient ways to display an image once it is defined.
......@@ -4463,6 +4464,51 @@ specifying the bounding box of the PostScript image, analogous to the
@end example
@end table
@node ImageMagick Images
@subsection ImageMagick Images
The Imagemagick library can be used to load many image formats in Emacs.
The function (imagemagick-types) returns a list of image file
extensions that your installation of imagemagick supports.
The function (imagemagick-register-types) will enable the imagemagick
support for the extensions in imagemagick-types minus the types listed
in imagemagick-types-inhibit.
imagemagick-types-inhibit has the value '(C HTML HTM TXT PDF) by
default. There can be overlap between image loaders in your Emacs
installation. If you never want to use the ImageMagick loader to use
Jpeg files, for instance, add 'JPG to imagemagick-types-inhibit. Which
loader that will be used in practice depends on the priority of the
loaders.
imagemagick-render-type is a new variable which can be set to choose
between screen render methods for the ImageMagick loader.
- 0 is a conservative metod which works with older ImageMagick
versions. It is a bit slow, but robust.
- 1 utilizes a newer ImageMagick method
Images loaded with imagemagick will support a couple of new display
specification behaviours:
- if the :width and :height keywords are specified, these values are
used for scaling the image. If only one of :width or :height is
specified, the other one will be calculated so as to preserve the
aspect ratio.If both :width and :height are specified, aspect ratio
will not be preserved.
- :rotation specifies a rotation angle in degrees.
- :index specifies which image inside an image bundle file format, such
as TIFF or DJVM, to view.
The image-metadata function can be used to retrieve the total number
of images in an image bundle. This is simmilar to how GIF files work.
@node Other Image Types
@subsection Other Image Types
@cindex PBM
......
......@@ -109,6 +109,22 @@ The frame-parameter tool-bar-position controls this. It takes the values
top, left, right or bottom. The Options => Show/Hide menu has entries
for this.
** ImageMagick support
It is now possible to use the Imagemagick library to load many new
image formats in Emacs.
To enable, use the following configure option:
--with-imagemagick
The new function (imagemagick-types) returns a list of image file
extensions that your installation of imagemagick supports.
The function (imagemagick-register-types) will enable the imagemagick
support for the extensions in imagemagick-types minus the types listed
in imagemagick-types-inhibit.
See the Emacs Manual for more information.
** The colors for selected text (the region face) are taken from the GTK
theme when Emacs is built with GTK.
......
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