o 8Va.@sddlZddlmZddlZddlZz ddlmZmZmZWn e y'Ynwddl m Z ddl m Z ddgiZ d d Zd d Ze d ddd   dddZdS)N)join)STDOUTCalledProcessError check_output)doctest_depends_on)latex)previewpygletcOs&tjdkrd}nd}t|d|i|S)NntirZ creationflags)osnamer)argskwargsZ creation_flagr8/usr/lib/python3/dist-packages/sympy/printing/preview.py_check_output_no_windows rc s ddlm}m}mddlm|dkr#ddlm}|j||dnt dd}j d d }|j j d |j d |d d |d d z.fdd_fdd}|_fdd}|_jsujrjWn tyYnwdS)Nr)windowimagegl)keypng)PNGImageDecoder)decoderz*pyglet preview works only for 'png' files.F)Z double_bufferZsympy)widthheightZcaptionZ resizableconfigcs d_dS)NT)has_exitr)winrron_close3s z_run_pyglet..on_closecs|jjfvr dSdS)N)QZESCAPE)symbol modifiers)rr!rr on_key_press8s z!_run_pyglet..on_key_presscsDddddjjjdjjddS)Ng?r)Z glClearColorZglClearZGL_COLOR_BUFFER_BITZblitrrr)rimgr rr on_expose>s  z_run_pyglet..on_expose)r rrrZ pyglet.windowrZpyglet.image.codecs.pngrload ValueErrorZConfigZWindowrrZ set_vsyncr!r%r'rZdispatch_eventsZflipKeyboardInterruptclose) fnamefmtrrroffsetrr%r'r)rr&rr!r r _run_pyglets@          r/)rdvipng)r )evinceZgimpzsuperior-dvi-viewer)exemodulesZdisable_viewersrTrc Ksdg} |durH|dkrd}ncgdgdgdd} z| |} Wnty.td|dw| D]}t|}|dur@|}nq1td |n)|d krU|durTtd n|d krb|duratd n|| vrqt|sqtd||dur|d}|r|d7}dddd|D}d|}n|rtdt|tr|}ndt|fddi| d}|d|dd}t }t t|dddd }| |Wdn1swY| durt t|d| td std!z tgd"|td#Wnty}ztd$|jd}~wwd%|}|d&krd'ggd(d)gd*gd+}z||}Wnty;td|dw|D]}t|}|rM|g}nq>t|d,kr_td-d.|td/|d0gd1d2gd3}d4|d5gd5|gd4|d5gd4|d5gd4|d5gd4|d5gd6}|dur||n |||g|||z t||td#Wnty}z td7d8||jfd}~ww|d krtt|||nq|d krt t||d9}| |Wdn 1swYnS|dkr$zd0dl}Wn tytd:wtt|||d;WdSz t||g|td#Wn'tyF}z td<|||jfd}~wwWddSWddSWddS1scwYdS)=a View expression or LaTeX markup in PNG, DVI, PostScript or PDF form. If the expr argument is an expression, it will be exported to LaTeX and then compiled using the available TeX distribution. The first argument, 'expr', may also be a LaTeX string. The function will then run the appropriate viewer for the given output format or use the user defined one. By default png output is generated. By default pretty Euler fonts are used for typesetting (they were used to typeset the well known "Concrete Mathematics" book). For that to work, you need the 'eulervm.sty' LaTeX style (in Debian/Ubuntu, install the texlive-fonts-extra package). If you prefer default AMS fonts or your system lacks 'eulervm' LaTeX package then unset the 'euler' keyword argument. To use viewer auto-detection, lets say for 'png' output, issue >>> from sympy import symbols, preview, Symbol >>> x, y = symbols("x,y") >>> preview(x + y, output='png') This will choose 'pyglet' by default. To select a different one, do >>> preview(x + y, output='png', viewer='gimp') The 'png' format is considered special. For all other formats the rules are slightly different. As an example we will take 'dvi' output format. If you would run >>> preview(x + y, output='dvi') then 'view' will look for available 'dvi' viewers on your system (predefined in the function, so it will try evince, first, then kdvi and xdvi). If nothing is found you will need to set the viewer explicitly. >>> preview(x + y, output='dvi', viewer='superior-dvi-viewer') This will skip auto-detection and will run user specified 'superior-dvi-viewer'. If 'view' fails to find it on your system it will gracefully raise an exception. You may also enter 'file' for the viewer argument. Doing so will cause this function to return a file object in read-only mode, if 'filename' is unset. However, if it was set, then 'preview' writes the genereted file to this filename instead. There is also support for writing to a BytesIO like object, which needs to be passed to the 'outputbuffer' argument. >>> from io import BytesIO >>> obj = BytesIO() >>> preview(x + y, output='png', viewer='BytesIO', ... outputbuffer=obj) The LaTeX preamble can be customized by setting the 'preamble' keyword argument. This can be used, e.g., to set a different font size, use a custom documentclass or import certain set of LaTeX packages. >>> preamble = "\\documentclass[10pt]{article}\n" \ ... "\\usepackage{amsmath,amsfonts}\\begin{document}" >>> preview(x + y, output='png', preamble=preamble) If the value of 'output' is different from 'dvi' then command line options can be set ('dvioptions' argument) for the execution of the 'dvi'+output conversion tool. These options have to be in the form of a list of strings (see subprocess.Popen). Additional keyword args will be passed to the latex call, e.g., the symbol_names flag. >>> phidd = Symbol('phidd') >>> preview(phidd, symbol_names={phidd:r'\ddot{\varphi}'}) For post-processing the generated TeX File can be written to a file by passing the desired filename to the 'outputTexFile' keyword argument. To write the TeX code to a file named "sample.tex" and run the default png viewer to display the resulting bitmap, do >>> preview(x + y, outputTexFile="sample.tex") r Nr)r1okularZkdviZxdvi)r1r4Zgsviewgv)r1r4ZkpdfZacroreadZxpdfr5)dvipspdfzInvalid output format: %sz(No viewers found for '%s' output format.filez-filename has to be specified if viewer="file"BytesIOzFoutputbuffer has to be a BytesIO compatible object if viewer="BytesIO"zUnrecognized viewer: %s)ZamsmathZamsfonts)euler cSsg|]}d|qS)z\usepackage{%s}r).0prrr s zpreview..z?\documentclass[varwidth,12pt]{standalone} %s \begin{document} zOThe "packages" keyword must not be set if a custom LaTeX preamble was specifiedz$\displaystyle modeZplain$z z\end{document} texput.texwzutf-8)encodingrzlatex program is not installed)rz-halt-on-errorz-interaction=nonstopmoderB)cwdstderrz7'latex' exited abnormally with the following output: %sz texput.%sr6dvips)dvipdfmxdvipdfmdvipdfr0dvisvgm)r7r8rZsvgrzNone of %s are installedz, z%s is not installedr)z-TZtightz-z9z --truecolorz --no-fonts)r0rKz-oz texput.dvi)rGrJrIrHr0rKz4'%s' exited abnormally with the following output: %s rbz=pyglet is required for preview. visit http://www.pyglet.org/)r-z7'%s %s' exited abnormally with the following output: %s)KeyErrorr)shutilwhichOSErrorr isinstancestrrtempfileZTemporaryDirectoryopenwritecopyfile RuntimeErrorrrroutputlenextendgetmovereadr ImportErrorr/) exprrZZviewerr;ZpackagesfilenameZ outputbufferZpreambleZ dvioptionsZ outputTexFileZlatex_settingsZspecialZ candidatesZcandidate_viewers candidatepathZactual_packagesZpackage_includesZ latex_stringZ latex_mainZworkdirZfhesrcZ commandnamesZ cmd_variantsZ cmd_variantZcmd_pathcmdZdefaultoptionsZ commandendr rrrr Rs2Z                   Y   Z$r ) rNTrNNNNN)r os.pathrrPrU subprocessrrrr`Zsympy.utilities.decoratorrrZ__doctest_requires__rr/r rrrrs*      7