gif2epsn.html
来自「giflib-4.1.6.tar.gz,最新的GIF 解码库」· HTML 代码 · 共 99 行
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<!doctype HTML public "-//W3O//DTD W3 HTML 2.0//EN"><HTML><HEAD><TITLE>gif2bgi</TITLE><link rev=made href=mailto:esr@snark.thyrsus.com></HEAD><BODY>Go to <a href="index.html">index page</a>.<CENTER><H1>gif2epsn</H1></CENTER>A program to dump images saved as GIF files on Epson type printers.<P><H1>Usage:</H1><pre>gif2epsn [-q] [-d dither] [-t bw] [-m map] [-i] [-n] [-p printer] [-h] gif-file</pre>If no gif-file is given, Gif2Epsn will try to read a GIF file from stdin.<p><H1>Memory required:</H1>Screen.<H1>Options:</H1><DL><DT>[-q]<DD> Quiet mode. Default off on MSDOS, on under UNIX. Controls printout of running scan lines. Use -q- to invert.<P><DT>[-d dither]<DD> Sets size of dithering matrix, where DitherSize can be 2,3 or 4 only (for 2x2, 3x3 and 4x4 dithering matrices). Default is 2. Note image will be displayed in this mode only if the mapping option (see -m) selected this mode.<P><DT> [-t bw]<DD> Sets threshold level for B&W mapping in percent. This threshold level is used in the different mappings as selected via -m. Default is 19%.<P><DT> [-m map]<DD> Select method to map colors to B&W. Mapping can be: <DL> <DT>0<DD> Every none background color is considered foreground (white color but is drawn as black by printer, unless -i is specified).<P> <DT>1<DD> If 0.3 * RED + 0.59 * GREEN + 0.11 * YELLOW > BW the pixel is considered white color.<P> <DT>2<DD> Colors are mapped as in 1, and use dithering of size as defined using -d option. BWthreshold is used here as scaler.<P> </DL><P>The default is option 0.<P><DT> [-i]<DD> Invert the image, i.e. black -> white, white -> black.<P><DT> [-n]<DD> Nicer image. Uses double-density feature of Epson printer. This takes more time (and kills your ink cartridge faster...) but results are usually better.<P><DT> [-p printer]<DD> Under Unix, output goes to stdout by default; under DOS, the default is LPT1:. With this switch you can specify the output target.<P><DT> [-h]<DD> print one line of command line help, similar to Usage above.<P></DL><H1>Notes:</H1>The output has an aspect ratio of 1, so a square image will be square inhardcopy as well.<P>The widest image can be printed is 640 pixels, on 8 inch paper. Youprobably will need to flip wider images, if height is less than that:`<a href="gifflip.html">gifflip</a> -r x29.gif | gif2epsn'. Widerimages will be clipped.<P><H1>Author:</H1>Gershon Elber<HR><ADDRESS>Eric S. Raymond <A HREF="mailto:esr@thyrsus.com"><esr@snark.thyrsus.com></A></ADDRESS></BODY></HTML>⌨️ 快捷键说明
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