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diff --git a/Master/texmf-dist/tex/generic/pgf/basiclayer/pgfbaseimage.code.tex b/Master/texmf-dist/tex/generic/pgf/basiclayer/pgfbaseimage.code.tex new file mode 100644 index 00000000000..41597300e23 --- /dev/null +++ b/Master/texmf-dist/tex/generic/pgf/basiclayer/pgfbaseimage.code.tex @@ -0,0 +1,236 @@ +\ProvidesPackageRCS[v\pgfversion] $Header: /cvsroot/pgf/pgf/generic/pgf/basiclayer/pgfbaseimage.code.tex,v 1.2 2005/07/06 15:58:57 tantau Exp $ + +% Copyright 2005 by Till Tantau <tantau@cs.tu-berlin.de>. +% +% This program can be redistributed and/or modified under the terms +% of the GNU Public License, version 2. + + + + +% Declare an image +% +% #1 = optional argument: width, height, page specification +% #2 = name of the image for later use +% #4 = filename without extension, automatic extensions are .pdf, +% .jpg, and .png for PDF and .ps, .eps, .epsi for postscript. +% +% Description: +% +% This command declares an image file for later use. Even if the image +% is used several times in the document, in PDF it will only be stored +% once. +% +% Example: +% +% \pgfdeclareimage[width=2cm,page=2]{myimage}{imagefilename} + +\def\pgfdeclareimage{\@ifnextchar[{\pgf@declareimage}{\pgf@declareimage[]}} +\def\pgf@declareimage[#1]#2#3{% + \setkeys{pgfimage}{height=,width=,page=,interpolate=false,mask=}% defaults + \setkeys{pgfimage}{#1}% + % Try to find the file + \gdef\pgf@filename{}% + % If page= parameter is not empty, try that file first: + \ifx\pgf@imagepage\@empty% + \else% + \expandafter\pgf@findfile\pgfsys@imagesuffixlist:+{#3.page\pgf@imagepage}% + \fi% + \ifx\pgf@filename\@empty% + \expandafter\pgf@findfile\pgfsys@imagesuffixlist:+{#3}% + \else% + \setkeys{pgfimage}{page=}% make page empty + \fi% + \ifx\pgf@filename\@empty% + \PackageWarning{pgf}% + {File "#3" not found when defining image "#2".\MessageBreak + Tried all extensions in "\pgfsys@imagesuffixlist"}% + \pgf@declaredraftimage{#2}% + \else% + \ifpgf@draftmode% + \pgf@declaredraftimage{#2}% + \else% + \pgfsys@defineimage% + \fi% + \fi% + \expandafter\global\expandafter\let\csname pgf@image@#2!\endcsname=\pgf@image% +} + +\define@key{pgfimage}{width}{\edef\pgf@imagewidth{#1}} +\define@key{pgfimage}{height}{\edef\pgf@imageheight{#1}} +\define@key{pgfimage}{page}{\edef\pgf@imagepage{#1}} +\define@key{pgfimage}{interpolate}[true]{\edef\pgf@imageinterpolate{/Interpolate #1}} +\define@key{pgfimage}{mask}{% + \edef\pgf@imagemask{#1}% + \ifx\pgf@imagemask\@empty% + \else% + \@ifundefined{pgf@mask@#1}% + {\PackageError{pgf}{Undefined mask "#1".}{}% + \edef\pgf@imagemask{}}% + {\edef\pgf@imagemask{\csname pgf@mask@#1\endcsname}% + \ifx\pgf@imagemask\@empty% + \else + \edef\pgf@imagemask{/SMask \pgf@imagemask\space 0 R}% + \fi}% + \fi} + +\def\pgf@findfile#1:#2+#3{% + \IfFileExists{#3.#1}% + {\xdef\pgf@filename{#3.#1}}% + {\def\pgf@mightbeempty{#2}% + \ifx\pgf@mightbeempty\@empty\else% + \pgf@findfile#2+{#3}% + \fi}} + +\def\pgf@declaredraftimage#1{% + \ifx\pgf@imagewidth\@empty% + \PackageWarning{pgf}{Missing width for image "#1" in draft mode.\MessageBreak Using 1cm instead}% + \edef\pgf@imagewidth{1cm}% + \fi% + \ifx\pgf@imageheight\@empty% + \PackageWarning{pgf}{Missing height for image "#1" in draft mode.\MessageBreak Using 1cm instead}% + \edef\pgf@imageheight{1cm}% + \fi% + \ifx\pgf@imagepage\@empty\else\edef\pgf@imagepagetext{ page \pgf@imagepage}\fi% + \edef\pgf@image{% + \hbox to \pgf@imagewidth{% + \vrule\kern-0.4pt% + \vbox to \pgf@imageheight{% + \hrule\vfil% + \hbox to \pgf@imagewidth{\hskip-10cm\hfil\noexpand\tiny#1\pgf@imagepage\hfil\hskip-10cm}% + \vfil\hrule}% + \kern-0.4pt\vrule}% + }% +} + + + +% Declare a soft mask +% +% #1 = optional argument: matte specification. default matte is +% white. +% #2 = name of the mask for later use +% #3 = filename without extension, automatic extensions are .pdf, +% .jpg, and .png for PDF. Postscript is not supported. +% +% Description: +% +% This command declares a soft mask for later masking an image. The +% declared mask should be used together with an image of exactly the +% same height/width if matte is defined. Matte should be the +% preblended background color (see pdf spec for details). +% +% Example: +% +% \pgfdeclaremask[matte=white]{maskname}{maskfilename} +% \pgfdeclareimage[mask=maskname]{image}{imagefilename} + +\def\pgfdeclaremask{\@ifnextchar[\pgf@declaremask{\pgf@declaremask[]}} +\def\pgf@declaremask[#1]#2#3{% + \setkeys{pgfmask}{matte={1 1 1}}% defaults + \setkeys{pgfmask}{#1}% + \def\pgf@mask{}% + % Try to find the file + \gdef\pgf@filename{}% + \expandafter\pgf@findfile\pgfsys@imagesuffixlist:+{#3}% + \ifx\pgf@filename\@empty% + \PackageWarning{pgf}% + {File "#3" not found when defining mask "#2".\MessageBreak + Tried all extensions in "\pgfsys@imagesuffixlist"}% + \else% + \pgfsys@definemask% + \fi% + \expandafter\global\expandafter\let\csname pgf@mask@#2\endcsname=\pgf@mask% +} + +\define@key{pgfmask}{matte}{\edef\pgf@maskmatte{#1}} + + + + +% Create an alias name for an image +% +% #1 = name of the alias +% #2 = name of the original +% +% Example: +% +% \pgfdeclareimage{image}{1cm}{1cm}{filename +% \pgfaliasimage{alias}{image} +% \pgfuseimage{alias} + +\def\pgfaliasimage#1#2{% + \expandafter\global\expandafter\let\expandafter\pgf@temp\expandafter=\csname pgf@image@#2!\endcsname% + \expandafter\global\expandafter\let\csname pgf@image@#1!\endcsname=\pgf@temp% + } + + +% Use an image +% +% #1 = name of a previously declared image +% +% Example: +% +% \pgfputat{\pgforigin}{\pgfbox[left,base]{\pgfuseimage{myimage}}} + +\def\pgfuseimage#1{% + \def\pgf@imagename{pgf@image@#1}% + \pgf@tryextensions{\pgf@imagename}{\pgfalternateextension}% + \expandafter\@ifundefined\expandafter{\pgf@imagename}% + {\PackageError{pgf}{Undefined image "#1"}{}}% + {{\leavevmode\csname\pgf@imagename\endcsname}}} + +\def\pgf@tryextensions#1#2{% + \edef\pgf@args{[#2!]}\expandafter\pgf@@tryextensions\pgf@args{#1}} +\def\pgf@@tryextensions[#1!#2]#3{% + \expandafter\@ifundefined\expandafter{#3.#1!#2}% + {\def\pgf@temp{#2}% + \ifx\pgf@temp\@empty% + \edef#3{#3!}% + \else% + \pgf@@tryextensions[#2]{#3}% + \fi}% + {\edef#3{#3.#1!#2}}} + + +% Alternate image +% +% Description: +% +% When an image is used, pgf first attempts to use the image with the +% alternate extension added. If this fails, the original image is +% used. If the alternate extension contains ``!'', then the text up to +% the ! is successively removed and the remainder is tried as an +% alternate extension. +% +% Example: +% +% \def\pgfalternateextension{20!white} + +\def\pgfalternateextension{} + + + +% Directly insert an image +% +% #1 = optional argument: width, height, page specification +% #2 = file name +% +% Description: +% +% Directly inserts an image without declaration. You can, however, +% still access this image using the name pgflastimage. By using +% pgfaliasimage, you can also save this image for later. +% +% Example: +% +% \pgfimage[height=2cm]{filename} + +\def\pgfimage{\@ifnextchar[\pgf@imagecom{\pgf@imagecom[]}} +\def\pgf@imagecom[#1]#2{% + \pgfdeclareimage[#1]{pgflastimage}{#2}% + \pgfuseimage{pgflastimage}} + + + +\endinput |