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Activate the code using preview.sty 0.73. Ditch support for older versions.
git-svn-id: svn://svn.lyx.org/lyx/lyx-devel/trunk@5194 a592a061-630c-0410-9148-cb99ea01b6c8
This commit is contained in:
Angus Leeming
parent
6bfcc23b3f
commit
1ccc528e28
@ -1,3 +1,8 @@
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2002-09-03 Angus Leeming <leeming@lyx.org>
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* scripts/lyxpreview2ppm.sh: re-written to make use of the "lyx"
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option parsed by preview.sty v 0.73.
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2002-08-31 Dekel Tsur <dekelts@tau.ac.il>
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* lyx2lyx/lyxconvert_218.py (update_tabular): Work with nested tabulars
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@ -1,30 +1,32 @@
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#!/bin/sh
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#! /bin/sh
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#
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# \file lyxpreview2ppm.sh
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# Copyright 2002 the LyX Team
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# Read the file COPYING
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#
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# \author Angus Leeming, leeming@lyx.org
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#
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# with much help from David Kastrup, david.kastrup@t-online.de.
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# The sed script was created with advice from Praveen D V, praveend@sasken.com
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# and the sed users' list, sed-users@yahoogroups.com.
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#
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# This script takes a LaTeX file and generates PPM files, one per page.
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# The idea is to use it with preview.sty to create small bitmap previews of
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# The idea is to use it with preview.sty from the preview-latex project
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# (http://preview-latex.sourceforge.net/) to create small bitmap previews of
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# things like math equations.
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# The script takes two arguments, the name of the file to be converted and
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# the resolution of the generated image, to be passed to gs.
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if [ $# -ne 2 ]; then
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exit 1
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fi
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# preview.sty can be obtained from CTAN/macros/latex/contrib/supported/preview.
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# A couple of helper functions
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# This script, lyxpreview2ppm.sh, takes two arguments, the name of the file
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# to be converted and a scale factor, used to ascertain the resolution of the
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# generated image which is then passed to gs.
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# If successful it will leave in dir ${DIR} a number of image files
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# ${BASE}[0-9]\{3\}.ppm and a file ${BASE}.metrics containing info needed by
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# LyX to position the images correctly on the screen. All other files ${BASE}*
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# will be deleted.
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# Three helper functions.
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FIND_IT () {
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which ${EXECUTABLE} > /dev/null
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STATUS=$?
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if [ ${STATUS} -ne 0 ]; then
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if [ $? -ne 0 ]; then
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echo "Unable to find \"${EXECUTABLE}\". Please install."
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exit 1
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fi
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@ -37,17 +39,29 @@ BAIL_OUT () {
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exit 1
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}
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REQUIRED_VERSION () {
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echo "We require preview.sty version 0.73 or newer. You're using"
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grep 'Package: preview' ${LOGFILE}
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}
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# Preliminary check
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if [ $# -ne 2 ]; then
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exit 1
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fi
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# We use latex, dvips and gs, so check that they're all there.
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EXECUTABLE=latex; FIND_IT
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EXECUTABLE=dvips; FIND_IT
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EXECUTABLE=gs; FIND_IT
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# Initialise some variables.
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TEXFILE=`basename $1`
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RESOLUTION=$2
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DIR=`dirname $1`
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BASE=`basename $1 .tex`
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SCALEFACTOR=$2
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TEXFILE=${BASE}.tex
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LOGFILE=${BASE}.log
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DVIFILE=${BASE}.dvi
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PSFILE=${BASE}.ps
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METRICSFILE=${BASE}.metrics
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@ -55,35 +69,54 @@ METRICSFILE=${BASE}.metrics
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# LaTeX -> DVI.
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cd ${DIR}
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latex ${TEXFILE}
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STATUS=$?
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if [ ${STATUS} -ne 0 ]; then
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# LaTeX failed.
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# preview.sty has known problems with the showlabels option,
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# so remove it and try again.
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# This "fix" should be removed once preview-latex 0.73 is released.
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sed -e '/^\\usepackage/,/{preview}$/s/,showlabels//' \
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< ${TEXFILE} > .${TEXFILE}
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cmp -s ${TEXFILE} .${TEXFILE}
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STATUS=$?
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if [ ${STATUS} -eq 0 ]; then
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rm -f .${TEXFILE}
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echo "Failed: latex ${TEXFILE}"
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BAIL_OUT
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fi
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mv -f .${TEXFILE} ${TEXFILE}
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latex ${TEXFILE}
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STATUS=$?
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if [ ${STATUS} -ne 0 ]; then
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echo "Failed: latex ${TEXFILE}"
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BAIL_OUT
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fi
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if [ $? -ne 0 ]; then
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echo "Failed: latex ${TEXFILE}"
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BAIL_OUT
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fi
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# Parse ${LOGFILE} to obtain bounding box info to output to ${METRICSFILE}.
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# This extracts lines starting "Preview: Tightpage" and "Preview: Snippet".
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grep -E 'Preview: [ST]' ${LOGFILE} > ${METRICSFILE}
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if [ $? -ne 0 ]; then
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echo "Failed: grep -E 'Preview: [ST]' ${LOGFILE}"
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REQUIRED_VERSION
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BAIL_OUT
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fi
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# Parse ${LOGFILE} to obtain ${RESOLUTION} for the gs process to follow.
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# 1. Extract font size from a line like "Preview: Fontsize 20.74pt"
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# Use grep for speed and because it gives an error if the line is not found.
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LINE=`grep 'Preview: Fontsize' ${LOGFILE}`
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if [ $? -ne 0 ]; then
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echo "Failed: grep 'Preview: Fontsize' ${LOGFILE}"
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REQUIRED_VERSION
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BAIL_OUT
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fi
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# Use "" quotes in the echo to preserve newlines (technically IFS separators).
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# The sed script strips out everything that won't form a decimal number from the
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# line. It bails out after the first match has been made in case there are
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# multiple lines "Preview: Fontsize". (There shouldn't be.)
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LATEXFONT=`echo "${LINE}" | sed 's/[^0-9\.]//g; 1q'`
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# 2. Extract magnification from a line like "Preview: Magnification 2074"
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# If no such line found, default to MAGNIFICATION=1000.
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LINE=`grep 'Preview: Magnification' ${LOGFILE}`
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if [ $? -ne 0 ]; then
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MAGNIFICATION=1000
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else
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# The sed script strips out everything that won't form an /integer/.
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MAGNIFICATION=`echo "${LINE}" | sed 's/[^0-9]//g; 1q'`
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fi
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# 3. Compute resolution.
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# "bc" allows floating-point arithmetic, unlike "expr" or "dc".
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RESOLUTION=`echo "scale=2; \
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${SCALEFACTOR} * (10/${LATEXFONT}) * (1000/${MAGNIFICATION})" \
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| bc`
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# DVI -> PostScript
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dvips -o ${PSFILE} ${DVIFILE}
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STATUS=$?
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if [ ${STATUS} -ne 0 ]; then
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if [ $? -ne 0 ]; then
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echo "Failed: dvips -o ${PSFILE} ${DVIFILE}"
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BAIL_OUT
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fi
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@ -100,67 +133,12 @@ gs -q -dNOPAUSE -dBATCH -dSAFER -sDEVICE=pnmraw -sOutputFile=${BASE}%03d.ppm \
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-dGraphicsAlphaBit=${ALPHA} -dTextAlphaBits=${ALPHA} -r${RESOLUTION} \
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${PSFILE}
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STATUS=$?
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if [ ${STATUS} -ne 0 ]; then
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if [ $? -ne 0 ]; then
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echo "Failed: gs ${PSFILE}"
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BAIL_OUT
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fi
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# Attempt to generate a file ${METRICSFILE} that contains only the tightpage
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# bounding box info, extract from ${PSFILE}
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# 1. Create a file containing the sed instructions
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SEDFILE=${BASE}.sed
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cat - > ${SEDFILE} <<EOF
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# Delete everything that's enclosed between %%BeginDocument and %%EndDocument
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/^\%\%BeginDocument/,/^\%\%EndDocument/d
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# Extract the tightpage bounding box info.
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# Given this snippet:
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# %%Page: 1 1
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# 1 0 bop
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# -32890 -32890 32890 32890 492688 0 744653
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# The sed command gives this:
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# %%Page 1: -32890 -32890 32890 32890 492688 0 744653
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/^\%\%Page:/{
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s/\: \(.*\) .*$/ \1: /;N;N
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s/\n[^\n]*\n//p
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}
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# Delete everything (so only the stuff that's printed, above, goes into the
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# metrics file).
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d
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EOF
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# 2. Run sed!
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sed -f ${SEDFILE} < ${PSFILE} > ${METRICSFILE}
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rm -f ${SEDFILE}
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# The ppm files have spurious (?! say some !) white space on the left and right
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# sides. If you want this removed set REMOVE_WS=1.
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REMOVE_WS=0
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which pnmcrop > /dev/null
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STATUS=$?
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if [ ${STATUS} -ne 0 ]; then
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REMOVE_WS=0
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fi
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if [ ${REMOVE_WS} -eq 1 ]; then
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TMP=.${BASE}.ppm
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for FILE in `ls ${BASE}???.ppm`
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do
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pnmcrop -left ${FILE} | pnmcrop -right > ${TMP}
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STATUS=$?
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if [ ${STATUS} -eq 0 ]; then
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mv -f ${TMP} ${FILE}
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fi
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done
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fi
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# All was successful, so remove everything except the ppm files and the
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# metrics file.
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# All has been successful, so remove everything except the bitmap files
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# and the metrics file.
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FILES=`ls ${BASE}* | sed -e "/${BASE}.metrics/d" -e "/${BASE}[0-9]\{3\}.ppm/d"`
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rm -f ${FILES}
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@ -1,3 +1,7 @@
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2002-09-03 Angus Leeming <leeming@lyx.org>
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* PreviewLoader.C: activate #ifdef USING_NEW_PREVIEW_STY code.
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2002-09-03 Angus Leeming <leeming@lyx.org>
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* GraphicsConverter.C (Impl c-tor): remove lyxpreview2xpm cruft.
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@ -12,17 +12,10 @@
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#pragma implementation
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#endif
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// Set to 1 if using preview.sty >= 0.73 and a version of lyxpreview2ppm.sh
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// that extracts the metrics info from the latex log file.
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#define USING_NEW_PREVIEW_STY 0
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#include "PreviewLoader.h"
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#include "PreviewImage.h"
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#include "buffer.h"
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#if !USING_NEW_PREVIEW_STY
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#include "bufferparams.h"
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#endif
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#include "converter.h"
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#include "debug.h"
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#include "lyxrc.h"
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@ -75,11 +68,6 @@ typedef list<string> PendingSnippets;
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// Each item in the vector is a pair<snippet, image file name>.
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typedef vector<StrPair> BitmapFile;
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#if !USING_NEW_PREVIEW_STY
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double setFontScalingFactor(Buffer &);
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#endif
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string const unique_filename(string const bufferpath);
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Converter const * setConverter();
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@ -321,12 +309,8 @@ namespace grfx {
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PreviewLoader::Impl::Impl(PreviewLoader & p, Buffer const & b)
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: parent_(p), buffer_(b), font_scaling_factor_(0.0)
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{
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#if USING_NEW_PREVIEW_STY
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font_scaling_factor_ = 0.01 * lyxrc.dpi * lyxrc.zoom *
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lyxrc.preview_scale_factor;
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#else
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font_scaling_factor_ = setFontScalingFactor(const_cast<Buffer &>(b));
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#endif
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lyxerr[Debug::GRAPHICS] << "The font scaling factor is "
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<< font_scaling_factor_ << endl;
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@ -672,68 +656,6 @@ Converter const * setConverter()
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}
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#if !USING_NEW_PREVIEW_STY
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double setFontScalingFactor(Buffer & buffer)
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{
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double scale_factor = 0.01 * lyxrc.dpi * lyxrc.zoom *
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lyxrc.preview_scale_factor;
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// Has the font size been set explicitly?
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string const & fontsize = buffer.params.fontsize;
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lyxerr[Debug::GRAPHICS] << "PreviewLoader::scaleToFitLyXView()\n"
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<< "font size is " << fontsize << endl;
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if (isStrUnsignedInt(fontsize))
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return 10.0 * scale_factor / strToDbl(fontsize);
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// No. We must extract it from the LaTeX class file.
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LyXTextClass const & tclass = buffer.params.getLyXTextClass();
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string const textclass(tclass.latexname() + ".cls");
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string const classfile(findtexfile(textclass, "cls"));
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lyxerr[Debug::GRAPHICS] << "text class is " << textclass << '\n'
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<< "class file is " << classfile << endl;
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ifstream ifs(classfile.c_str());
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if (!ifs.good()) {
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lyxerr[Debug::GRAPHICS] << "Unable to open class file!" << endl;
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return scale_factor;
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}
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string str;
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double scaling = scale_factor;
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while (ifs.good()) {
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getline(ifs, str);
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// To get the default font size, look for a line like
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// "\ExecuteOptions{letterpaper,10pt,oneside,onecolumn,final}"
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if (!prefixIs(ltrim(str), "\\ExecuteOptions"))
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continue;
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// str contains just the options of \ExecuteOptions
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string const tmp = split(str, '{');
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split(tmp, str, '}');
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int count = 0;
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string tok = token(str, ',', count++);
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while (!isValidLength(tok) && !tok.empty())
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tok = token(str, ',', count++);
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if (!tok.empty()) {
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lyxerr[Debug::GRAPHICS]
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<< "Extracted default font size from "
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"LaTeX class file successfully!" << endl;
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LyXLength fsize(tok);
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scaling *= 10.0 / fsize.value();
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break;
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}
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}
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return scaling;
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}
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#endif
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void setAscentFractions(vector<double> & ascent_fractions,
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string const & metrics_file)
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{
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@ -753,7 +675,6 @@ void setAscentFractions(vector<double> & ascent_fractions,
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bool error = false;
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#if USING_NEW_PREVIEW_STY
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// Tightpage dimensions affect all subsequent dimensions
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int tp_ascent;
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int tp_descent;
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@ -806,43 +727,6 @@ void setAscentFractions(vector<double> & ascent_fractions,
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}
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}
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#else
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int snippet_counter = 0;
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for (; it != end; ++it) {
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// Extracting lines of the form
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// %%Page id: tp_bl_x tp_bl_y tp_tr_x tp_tr_y asc desc width
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string page;
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string page_id;
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int dummy;
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int tp_ascent;
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int tp_descent;
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int ascent;
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int descent;
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in >> page >> page_id
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>> dummy >> tp_descent >> dummy >> tp_ascent
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>> ascent >> descent >> dummy;
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page_id = rtrim(page_id, ":");
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error = !in.good()
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|| !isStrUnsignedInt(page_id);
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if (error)
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break;
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int const snippet_id = strToInt(page_id);
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error = page != "%%Page"
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|| ++snippet_counter != snippet_id;
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if (error)
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break;
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double const a = ascent + tp_ascent;
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double const d = descent - tp_descent;
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if (!lyx::float_equal(a + d, 0, 0.1))
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*it = a / (a + d);
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}
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#endif
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if (error) {
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lyxerr[Debug::GRAPHICS]
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<< "setAscentFractions(" << metrics_file << ")\n"
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