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diff --git a/Build/source/texk/dvipng/doc/dvipng.1 b/Build/source/texk/dvipng/doc/dvipng.1 new file mode 100644 index 00000000000..613912fea6d --- /dev/null +++ b/Build/source/texk/dvipng/doc/dvipng.1 @@ -0,0 +1,506 @@ +.\" Automatically generated by Pod::Man 4.09 (Pod::Simple 3.35) +.\" +.\" Standard preamble: +.\" ======================================================================== +.de Sp \" Vertical space (when we can't use .PP) +.if t .sp .5v +.if n .sp +.. +.de Vb \" Begin verbatim text +.ft CW +.nf +.ne \\$1 +.. +.de Ve \" End verbatim text +.ft R +.fi +.. +.\" Set up some character translations and predefined strings. \*(-- will +.\" give an unbreakable dash, \*(PI will give pi, \*(L" will give a left +.\" double quote, and \*(R" will give a right double quote. \*(C+ will +.\" give a nicer C++. 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Always turn off hyphenation; it makes +.\" way too many mistakes in technical documents. +.if n .ad l +.nh +.SH "NAME" +dvipng \- A DVI\-to\-PNG translator +.SH "SYNOPSIS" +.IX Header "SYNOPSIS" +dvipng [options] filename +.PP +dvipng [options] [filename] \- +.SH "DESCRIPTION" +.IX Header "DESCRIPTION" +This program makes \s-1PNG\s0 and/or \s-1GIF\s0 graphics from \s-1DVI\s0 files as obtained +from TeX and its relatives. +.PP +If \s-1GIF\s0 support is enabled, \s-1GIF\s0 output is chosen by using the +\&\fBdvigif\fR binary or with the \fB\-\-gif\fR option. +.PP +The benefits of \fBdvipng\fR/\fBdvigif\fR include +.IP "*" 4 +Speed. It is a very fast bitmap-rendering code for \s-1DVI\s0 files, which +makes it suitable for generating large amounts of images on-the-fly, +as needed in preview-latex, WeBWorK and others. +.IP "*" 4 +It does not read the postamble, so it can be started before TeX +finishes. There is a \fB\-\-follow\fR switch that makes dvipng wait at +end-of-file for further output, unless it finds the \s-1POST\s0 marker that +indicates the end of the \s-1DVI.\s0 +.IP "*" 4 +Interactive query of options. dvipng can read options interactively +through stdin, and all options are usable. It is even possible to change +the input file through this interface. +.IP "*" 4 +Supports \s-1PK, VF,\s0 PostScript Type1, and TrueType fonts, subfonts (i.e., +as used in CJK-LaTeX), color specials, and inclusion of PostScript, +\&\s-1PNG, JPEG\s0 or \s-1GIF\s0 images. +.IP "*" 4 +and more... +.SH "OPTIONS" +.IX Header "OPTIONS" +Many of the parameterless options listed here can be turned off by +suffixing the option with a zero (\fB0\fR); for instance, to turn off +page reversal, use \fB\-r0\fR. Such options are marked with a trailing +\&\fB*\fR. +.IP "\fB\-\fR" 4 +.IX Item "-" +Read additional options from standard input after processing the command +line. +.IP "\fB\-\-help\fR" 4 +.IX Item "--help" +Print a usage message and exit. +.IP "\fB\-\-version\fR" 4 +.IX Item "--version" +Print the version number and exit. +.IP "\fB\-bd\fR \fInum\fR" 4 +.IX Item "-bd num" +.PD 0 +.IP "\fB\-bd\fR \fIcolor_spec\fR" 4 +.IX Item "-bd color_spec" +.IP "\fB\-bd '\fR\fInum\fR\fB \fR\fIcolor_spec\fR\fB'\fR" 4 +.IX Item "-bd 'num color_spec'" +.PD +Set the pixel width of the transparent border (default 0). Using this +option will make the image edges transparent, but it only affects pixels +with the background color. Giving a \fIcolor_spec\fR will set the +fallback color, to be used in viewers that cannot handle transparency +(the default is the background color). The color spec should be in +TeX color \especial syntax, e.g., 'rgb 1.0 0.0 0.0'. Setting the +fallback color makes the default border width 1 px. +.IP "\fB\-\-bdpi\fR \fInum\fR" 4 +.IX Item "--bdpi num" +This option only has an effect when using bitmapped (\s-1PK\s0) fonts. The +option sets the base (Metafont) resolution, both horizontal and +vertical, to \fInum\fR dpi (dots per inch). This option is necessary +when manually selecting Metafont mode with the \-\-mode option (see +below). +.IP "\fB\-bg\fR \fIcolor_spec\fR" 4 +.IX Item "-bg color_spec" +Choose background color for the images. This option will be ignored if +there is a background color \especial in the \s-1DVI.\s0 The color spec should +be in TeX color \especial syntax, e.g., 'rgb 1.0 0.0 0.0'. You can +also specify 'Transparent' or 'transparent' which will give you a +transparent background with the normal background as a fallback color. A +capitalized 'Transparent' will give a full-alpha transparency, while an +all-lowercase 'transparent' will give a simple fully transparent +background with non-transparent antialiased pixels. The latter would be +suitable for viewers who cannot cope with a true alpha channel. \s-1GIF\s0 +images do not support full alpha transparency, so in case of \s-1GIF\s0 output, +both variants will use the latter behaviour. +.IP "\fB\-d\fR \fInum\fR" 4 +.IX Item "-d num" +Set the debug flags, showing what dvipng (thinks it) is doing. This will +work unless dvipng has been compiled without the \f(CW\*(C`DEBUG\*(C'\fR option +(not recommended). Set the flags as you need them, use \fB\-d \-1\fR as +the first option for maximum output. +.IP "\fB\-D\fR \fInum\fR" 4 +.IX Item "-D num" +Set the output resolution, both horizontal and vertical, to \fInum\fR +dpi (dots per inch). +.Sp +One may want to adjust this to fit a certain text font size (e.g., on +a web page), and for a text font height of \fIfont_px\fR pixels (in +Mozilla) the correct formula is +.Sp +.Vb 1 +\& <dpi> = <font_px> * 72.27 / 10 [px * TeXpt/in / TeXpt] +.Ve +.Sp +The last division by ten is due to the standard font height 10pt in +your document, if you use 12pt, divide by 12. Unfortunately, some +proprietary browsers have font height in pt (points), not pixels. You +have to rescale that to pixels, using the screen resolution (default +is usually 96 dpi) which means the formula is +.Sp +.Vb 1 +\& <font_px> = <font_pt> * 96 / 72 [pt * px/in / (pt/in)] +.Ve +.Sp +On some high-res screens, the value is instead 120 dpi. Good luck! +.IP "\fB\-\-depth*\fR" 4 +.IX Item "--depth*" +Report the depth of the image. This only works reliably when the +LaTeX style \fIpreview.sty\fR from preview-latex is used with +the \fBactive\fR option. It reports the number of pixels from the +bottom of the image to the baseline of the image. This can be used for +vertical positioning of the image in, e.g., web documents, where one +would use (Cascading StyleSheets 1) +.Sp +.Vb 1 +\& <IMG SRC="<filename.png>" STYLE="vertical\-align: \-<depth>px"> +.Ve +.Sp +The depth is a negative offset in this case, so the minus sign is +necessary, and the unit is pixels (px). +.IP "\fB\-\-dvinum*\fR" 4 +.IX Item "--dvinum*" +Set this option to make the output page number be the TeX page +numbers rather than the physical page number. See the \fB\-o\fR switch. +.IP "\fB\-fg\fR \fIcolor_spec\fR" 4 +.IX Item "-fg color_spec" +Choose foreground color for the images. This option will be ignored if +there is a foreground color \especial in the \s-1DVI.\s0 The color spec should +be in TeX color \especial syntax, e.g., 'rgb 1.0 0.0 0.0'. +.IP "\fB\-\-follow*\fR" 4 +.IX Item "--follow*" +Wait for data at end-of-file. One of the benefits of dvipng is that it +does not read the postamble, so it can be started before TeX +finishes. This switch makes dvipng wait at end-of-file for further +output, unless it finds the \s-1POST\s0 marker that indicates the end of the +\&\s-1DVI.\s0 This is similar to \fBtail \-f\fR but for DVI-to-PNG conversion. +.IP "\fB\-\-freetype*\fR" 4 +.IX Item "--freetype*" +Enable/disable FreeType font rendering (default on). This option is +available if the FreeType2 font library was present at compilation time. +If this is the case, dvipng will have direct support for PostScript +Type1 and TrueType fonts internally, rather than using \fBgsftopk\fR +for rendering the fonts. If you have PostScript versions of Computer +Modern installed, there will be no need to generate bitmapped (\s-1PK\s0) +variants on disk of these. Then, you can render images at different (and +unusual) resolutions without cluttering the disk with lots of bitmapped +fonts. +One reason to disable FreeType font rendering would be to generate +identical output on different platforms, since FreeType uses the native +renderer and therefore can give slightly different output on each platform. +.IP "\fB\-\-gamma\fR \fInum\fR" 4 +.IX Item "--gamma num" +Control the interpolation of colors in the greyscale anti-aliasing +color palette. Default value is 1.0. For 0 < \fInum\fR < 1, the +fonts will be lighter (more like the background), and for \fInum\fR > +1, the fonts will be darker (more like the foreground). +.IP "\fB\-\-gif*\fR" 4 +.IX Item "--gif*" +The images are output in the \s-1GIF\s0 format, if \s-1GIF\s0 support is enabled. +This is the default for the \fBdvigif\fR binary, which only will be +available when \s-1GIF\s0 support is enabled. \s-1GIF\s0 images are palette images +(see the \fB\-\-palette\fR option) and does not support true alpha +channels (see the \fB\-\-bg\fR option). See also the \fB\-\-png\fR +option. +.IP "\fB\-\-height*\fR" 4 +.IX Item "--height*" +Report the height of the image. This only works reliably when the +LaTeX style \fIpreview.sty\fR from preview-latex is used with +the \fBactive\fR option. It reports the number of pixels from the top +of the image to the baseline of the image. The total height of the +image is obtained as the sum of the values reported from +\&\fB\-\-height\fR and \fB\-\-depth\fR. +.IP "\fB\-l [=]\fR\fInum\fR" 4 +.IX Item "-l [=]num" +The last page printed will be the first one numbered \fInum\fR. Default +is the last page in the document. If \fInum\fR is prefixed by an equals +sign, then it (and the argument to the \fB\-p\fR option, if specified) +is treated as a physical (absolute) page number, rather than a value to +compare with the TeX \fB\ecount0\fR values stored in the \s-1DVI\s0 file. +Thus, using \fB\-l =9\fR will end with the ninth page of the document, +no matter what the pages are actually numbered. +.IP "\fB\-\-mode\fR \fImode\fR" 4 +.IX Item "--mode mode" +This option only has an effect when using bitmapped (\s-1PK\s0) fonts. Use +\&\fImode\fR as the Metafont device name for the \s-1PK\s0 fonts (both for path +searching and font generation). This needs to be augmented with the base +device resolution, given with the \fB\-\-bdpi\fR option. See the file +<\fBftp://ftp.tug.org/tex/modes.mf\fR> for a list of resolutions and mode +names for most devices. +.IP "\fB\-M*\fR" 4 +.IX Item "-M*" +This option only has an effect when using bitmapped (\s-1PK\s0) fonts. It turns +off automatic \s-1PK\s0 font generation (\fImktexpk\fR). +.IP "\fB\-\-nogs*\fR" 4 +.IX Item "--nogs*" +This switch prohibits the internal call to GhostScript for displaying +PostScript specials. \fB\-\-nogs0\fR turns the call back on. +.IP "\fB\-\-nogssafer*\fR" 4 +.IX Item "--nogssafer*" +Normally, if GhostScript is used to render PostScript specials, the +GhostScript interpreter is run with the option \fB\-dSAFER\fR. The +\&\fB\-\-nogssafer\fR option runs GhostScript without \fB\-dSAFER\fR. The +\&\fB\-dSAFER\fR option in Ghostscript disables PostScript operators such +as deletefile, to prevent possibly malicious PostScript programs from +having any effect. +.IP "\fB\-\-norawps*\fR" 4 +.IX Item "--norawps*" +Some packages generate raw PostScript specials, even non-rendering such +specials. This switch turns off the internal call to GhostScript +intended to display these raw PostScript specials. \fB\-\-norawps0\fR +turns the call back on. +.IP "\fB\-o\fR \fIname\fR" 4 +.IX Item "-o name" +Send output to the file \fIname\fR. A single occurrence of \fB\f(CB%d\fB\fR or +\&\fB\f(CB%01d\fB\fR, ..., \fB\f(CB%09d\fB\fR will be exchanged for the physical +page number (this can be changed, see the \fB\-\-dvinum\fR switch). The +default output filename is \fIfile\fR\fB\f(CB%d\fB.png\fR where the input \s-1DVI\s0 +file was \fIfile\fR\fB.dvi\fR. +.IP "\fB\-O\fR \fIx\-offset\fR\fB,\fR\fIy\-offset\fR" 4 +.IX Item "-O x-offset,y-offset" +Move the origin by \fIx\-offset\fR,\fIy\-offset\fR, a comma-separated +pair of dimensions such as \fB.1in,\-.3cm\fR. +The origin of the page is shifted from the default position +(of one inch down, one inch to the right from the upper left corner of +the paper) by this amount. +.IP "\fB\-p [=]\fR\fInum\fR" 4 +.IX Item "-p [=]num" +The first page printed will be the first one numbered \fInum\fR. Default +is the first page in the document. If \fInum\fR is prefixed by an +equals sign, then it (and the argument to the \fB\-l\fR option, if +specified) is treated as a physical (absolute) page number, rather than +a value to compare with the TeX \fB\ecount0\fR values stored in the +\&\s-1DVI\s0 file. Thus, using \fB\-p =3\fR will start with the third page of +the document, no matter what the pages are actually numbered. +.IP "\fB\-\-palette*\fR" 4 +.IX Item "--palette*" +When an external image is included, \fBdvipng\fR will automatically +switch to truecolor mode, to avoid unnecessary delay and quality +reduction, and enable the \s-1EPS\s0 translator to draw on a transparent +background and outside of the boundingbox. This switch will force +palette (256\-color) output and make \fBdvipng\fR revert to opaque +clipped image inclusion. This will also override the \fB\-\-truecolor\fR +switch if present. +.IP "\fB\-\-picky*\fR" 4 +.IX Item "--picky*" +No images are output when a warning occurs. Normally, dvipng will +output an image in spite of a warning, but there may be something +missing in this image. One reason to use this option would be if you +have a more complete but slower fallback converter. Mainly, this is +useful for failed figure inclusion and unknown \especial occurrences, +but warnings will also occur for missing or unknown color specs and +missing \s-1PK\s0 fonts. +.IP "\fB\-\-png*\fR" 4 +.IX Item "--png*" +The images are output in the \s-1PNG\s0 format. This is the default for the +\&\fBdvipng\fR binary. See also the \fB\-\-gif\fR option. +.IP "\fB\-pp\fR \fIfirstpage\fR\fB\-\fR\fIlastpage\fR" 4 +.IX Item "-pp firstpage-lastpage" +Print pages \fIfirstpage\fR through \fIlastpage\fR; but not quite +equivalent to \fB\-p\fR \fIfirstpage\fR \fB\-l\fR \fIlastpage\fR. For example, +when rendering a book, there may be several instances of a page in the +\&\s-1DVI\s0 file (one in \f(CW\*(C`\efrontmatter\*(C'\fR, one in \f(CW\*(C`\emainmatter\*(C'\fR, and one +in \f(CW\*(C`\ebackmatter\*(C'\fR). In case of several pages matching, \fB\-pp\fR +\&\fIfirstpage\fR\fB\-\fR\fIlastpage\fR will render \fIall\fR pages that +matches the specified range, while \fB\-p\fR \fIfirstpage\fR \fB\-l\fR +\&\fIlastpage\fR will render the pages from the \fIfirst\fR occurrence +of \fIfirstpage\fR to the \fIfirst\fR occurrence of \fIlastpage\fR. +This is the (undocumented) behaviour of dvips. In dvipng you can give +both kinds of options, in which case you get all pages that matches the +range in \fB\-pp\fR between the pages from \fB\-p\fR to \fB\-l\fR. Also +multiple \fB\-pp\fR options accumulate, unlike \fB\-p\fR and \fB\-l\fR. +The \fB\-\fR separator can also be \fB:\fR. Note that \fB\-pp \-1\fR +will be interpreted as \*(L"all pages up to and including 1\*(R", if you want a +page numbered \-1 (only the table of contents, say) put \fB\-pp \-1\-\-1\fR, +or more readable, \fB\-pp \-1:\-1\fR. +.IP "\fB\-q*\fR" 4 +.IX Item "-q*" +Run quietly. Don't chatter about pages converted, etc. to standard +output; report no warnings (only errors) to standard error. +.IP "\fB\-Q\fR \fInum\fR" 4 +.IX Item "-Q num" +Set the quality to \fInum\fR. That is, choose the number of antialiasing +levels for bitmapped fonts (\s-1PK\s0), to be +\&\fInum\fR*\fInum\fR+1. The default value is 4 which gives 17 levels of +antialiasing for antialiased fonts from these two. If FreeType is +available, its rendering is unaffected by this option. +.IP "\fB\-r*\fR" 4 +.IX Item "-r*" +Toggle output of pages in reverse/forward order. By default, the first +page in the \s-1DVI\s0 is output first. +.IP "\fB\-\-strict*\fR" 4 +.IX Item "--strict*" +The program exits when a warning occurs. Normally, dvipng will output +an image in spite of a warning, but there may be something missing in +this image. One reason to use this option would be if you have a more +complete but slower fallback converter. See the \fB\-\-picky\fR option +above for a list of when warnings occur. +.IP "\fB\-T\fR \fIimage_size\fR" 4 +.IX Item "-T image_size" +Set the image size to \fIimage_size\fR which can be either of +\&\fBbbox\fR, \fBtight\fR, or a comma-separated pair of dimensions +\&\fIhsize\fR,\fIvsize\fR such as \fB.1in,.3cm\fR. The default is +\&\fBbbox\fR which produces a \s-1PNG\s0 that includes all ink put on the page +and in addition the \s-1DVI\s0 origin, located 1in from the top and 1in from +the left edge of the paper. This usually gives whitespace above and to +the left in the produced image. The value \fBtight\fR will make dvipng +only include all ink put on the page, producing neat images. +.IP "\fB\-\-truecolor*\fR" 4 +.IX Item "--truecolor*" +This will make \fBdvipng\fR generate truecolor output. Note that +truecolor output is automatic if you include an external image in your +\&\s-1DVI,\s0 e.g., via a PostScript special (i.e., the \fBgraphics\fR or +\&\fBgraphicx\fR package). This switch is overridden by the +\&\fB\-\-palette\fR switch. +.IP "\fB\-v*\fR" 4 +.IX Item "-v*" +Enable verbose operation. This will currently indicate what fonts is +used, in addition to the usual output. +.IP "\fB\-\-width*\fR" 4 +.IX Item "--width*" +Report the width of the image. See also \fB\-\-height\fR and +\&\fB\-\-depth\fR. +.IP "\fB\-x\fR \fInum\fR" 4 +.IX Item "-x num" +This option is deprecated; it should not be used. It is much better to +select the output resolution directly with the \fB\-D\fR option. This +option sets the magnification ratio to \fInum\fR/1000 and +overrides the magnification specified in the \s-1DVI\s0 file. Must be between +10 and 100000. It is recommended that you use standard magstep values +(1095, 1200, 1440, 1728, 2074, 2488, 2986, and so on) to help reduce the +total number of \s-1PK\s0 files generated. \fInum\fR may be a real number, not +an integer, for increased precision. +.IP "\fB\-z\fR \fInum\fR" 4 +.IX Item "-z num" +Set the \s-1PNG\s0 compression level to \fInum\fR. This option is enabled if +your \fBlibgd\fR is new enough. The default compression level is 1, +which selects maximum speed at the price of slightly larger PNGs. For an +older \fBlibgd\fR, the hard-soldered value 5 is used. The include file +\&\fBpng.h\fR says +\&\*(L"Currently, valid values range from 0 \- 9, corresponding directly to +the zlib compression levels 0 \- 9 (0 \- no compression, 9 \- \*(R"maximal\*(L" +compression). Note that tests have shown that zlib compression levels +3\-6 usually perform as well as level 9 for \s-1PNG\s0 images, and do +considerably fewer calculations. In the future, these values may not +correspond directly to the zlib compression levels.\*(R" +.SH "NOTES" +.IX Header "NOTES" +The full manual is accessible in info format, on most systems by typing +.PP +.Vb 1 +\& info dvipng +.Ve +.SH "COPYRIGHT" +.IX Header "COPYRIGHT" +This program is released under the \s-1GNU\s0 Lesser General Public License +version 3, see the \s-1COPYING\s0 file in the dvipng distribution or +<\fBhttp://www.gnu.org/licenses/gpl.html\fR>. +.PP +Copyright (c) 2002\-2015, 2019 Jan-AAke Larsson |