* [PATCH] Added possibility of overriding PGF inclusion command
@ 2016-07-17 13:35 Stefanos Carlström
2016-07-30 19:57 ` Nicolas Goaziou
0 siblings, 1 reply; 2+ messages in thread
From: Stefanos Carlström @ 2016-07-17 13:35 UTC (permalink / raw)
To: emacs-orgmode; +Cc: Stefanos Carlström
* ox-latex.el (org-latex--inline-image): The user can now customize the
way PGF images are included by changing the (new) variable
`org-latex-inline-pgf-command'.
If the PGF file is stored in a subdirectory and references an external
image file in the same directory, LaTeX will complain about not finding
it. A workaround could be to define a function like this in the
preamble:
\newcommand\inputpgf[2]{{
\let\pgfimageWithoutPath\pgfimage
\renewcommand{\pgfimage}[2][]{\pgfimageWithoutPath[##1]{#1/##2}}
\input{#1/#2}
}}
and customizing `org-latex-inline-pgf-command' to hold this function:
(lambda (path)
(let ((dir-name (substring (file-name-directory path) 0 -1))
(file-name (file-name-nondirectory path)))
(format "\\inputpgf{%s}{%s}" dir-name file-name)))
This way, LaTeX will be able to find the external images. The idea came
from here: http://tex.stackexchange.com/a/282110/9742
TINYCHANGE
---
lisp/ox-latex.el | 17 +++++++++++++++--
1 file changed, 15 insertions(+), 2 deletions(-)
diff --git a/lisp/ox-latex.el b/lisp/ox-latex.el
index 0901726..419f608 100644
--- a/lisp/ox-latex.el
+++ b/lisp/ox-latex.el
@@ -730,6 +730,19 @@ default we use here encompasses both."
:type '(alist :key-type (string :tag "Type")
:value-type (regexp :tag "Path")))
+(defcustom org-latex-inline-pgf-command
+ (lambda (path) (format "\\input{%s}" path))
+ "Function used to include PGF images as links. By default, the
+pgf images is included with a simple \input{file.pgf} command,
+but the user might want to redefine this behaviour, if the pgf
+file is stored in a subdirectory, and it references external
+image files, as is the case when saving to PGF format from
+matplotlib. The user can then specify a LaTeX command that takes
+care of providing the correct search path for the external
+dependencies, by redefining \pgfimage suitably."
+ :group 'org-export-latex
+ :type 'function)
+
(defcustom org-latex-link-with-unknown-path-format "\\texttt{%s}"
"Format string for links with unknown path type."
:group 'org-export-latex
@@ -2300,12 +2313,12 @@ used as a communication channel."
image-code)
(if (member filetype '("tikz" "pgf"))
;; For tikz images:
- ;; - use \input to read in image file.
+ ;; - use \input (default, can be overridden) to read in image file.
;; - if options are present, wrap in a tikzpicture environment.
;; - if width or height are present, use \resizebox to change
;; the image size.
(progn
- (setq image-code (format "\\input{%s}" path))
+ (setq image-code (funcall org-latex-inline-pgf-command path))
(when (org-string-nw-p options)
(setq image-code
(format "\\begin{tikzpicture}[%s]\n%s\n\\end{tikzpicture}"
--
2.7.4 (Apple Git-66)
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] Added possibility of overriding PGF inclusion command
2016-07-17 13:35 [PATCH] Added possibility of overriding PGF inclusion command Stefanos Carlström
@ 2016-07-30 19:57 ` Nicolas Goaziou
0 siblings, 0 replies; 2+ messages in thread
From: Nicolas Goaziou @ 2016-07-30 19:57 UTC (permalink / raw)
To: Stefanos Carlström; +Cc: emacs-orgmode
Hello,
Stefanos Carlström <stefanos.carlstrom@gmail.com> writes:
> * ox-latex.el (org-latex--inline-image): The user can now customize the
> way PGF images are included by changing the (new) variable
> `org-latex-inline-pgf-command'.
>
> If the PGF file is stored in a subdirectory and references an external
> image file in the same directory, LaTeX will complain about not finding
> it. A workaround could be to define a function like this in the
> preamble:
>
> \newcommand\inputpgf[2]{{
> \let\pgfimageWithoutPath\pgfimage
> \renewcommand{\pgfimage}[2][]{\pgfimageWithoutPath[##1]{#1/##2}}
> \input{#1/#2}
> }}
>
> and customizing `org-latex-inline-pgf-command' to hold this function:
>
> (lambda (path)
> (let ((dir-name (substring (file-name-directory path) 0 -1))
> (file-name (file-name-nondirectory path)))
> (format "\\inputpgf{%s}{%s}" dir-name file-name)))
>
> This way, LaTeX will be able to find the external images. The idea came
> from here: http://tex.stackexchange.com/a/282110/9742
Thank you for your patch.
However, you can easily achieve the same using a filter, can't you?
If a function needs to be introduced, it would be better to factor out
the whole "tikz" and "pgf" handling, i.e.,
(progn
(setq image-code (format "\\input{%s}" path))
(when (org-string-nw-p options)
(setq image-code
(format "\\begin{tikzpicture}[%s]\n%s\n\\end{tikzpicture}"
options
image-code)))
(when (or (org-string-nw-p width) (org-string-nw-p height))
(setq image-code (format "\\resizebox{%s}{%s}{%s}"
(if (org-string-nw-p width) width "!")
(if (org-string-nw-p height) height "!")
image-code))))
and have a variable holding a function to handle this such extensions,
and doing the above as a default.
Anyway, that's just an idea and people more knowledgeable on the subject
may want to chime in.
Regards,
--
Nicolas Goaziou
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