img(n) [osx man page]

img-intro(n)															      img-intro(n)

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NAME

       img-intro - Introduction to Img

SYNOPSIS

       package require Tk

       package require Img  ?1.4?

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DESCRIPTION

       Img is a Tk extension, adding support for many other Image formats, as listed below. The individual formats are described in more detail on
       their own pages.

       bmp    Windows bitmap format.  See img-bmp.

       dted   DTED terrain elevation data interpreted as image.  See img-dted.

       gif    The venerable graphics interchange format (with transparency, but without LZW. The latter due to patent issues).	See img-gif.

       ico    Windows icon files.  See img-ico.

       jpeg   The format for lossy compressed still pictures specified by the Joint Picture Experts Group.  See img-jpeg.

       pcx    Paintbrush image format.	See img-pcx.

       pixmap While the other formats are handlers for the Tk photo image type this is a new image type for Tk.  See img-pixmap.

       png    Portable Network Graphics, successor to GIF.  See img-png.

       ppm    Portable Pixmaps.  See img-ppm.

       ps     Postscript and PDF (Portable document format). Requires an external application, ghostview, for its operation.  See img-ps.

       raw    Raw matrix data interpreted as image.  See img-raw.

       sgi    Native SGI format.  See img-sgi.

       sun    Sun raster images.  See img-sun.

       tga    Targa files.  See img-tga.

       tiff   Tagged Interchange File Format.  See img-tiff.

       window Put the content of a Tk window into an image.  See img-window.

       xbm    X Bitmaps.  See img-xbm.

       xpm    X Pixmaps.  See img-xpm.

       This version only works with Tcl/Tk 8.3 or higher.  If you are using Tk 8.2, please use Img 1.3.  If you are using Tk 8.1 or  lower  please
       stick  with  Img  1.2.4	(which is still available).  And if you are using Tk4.2 or lower, please stick with Img 1.1.4 (which is also still
       available).

SEE ALSO

       img-bmp, img-dted, img-gif, img-ico, img-jpeg, img-pcx, img-pixmap, img-png, img-ppm, img-ps, img-raw, img-sgi, img-sun, img-tga, img-tiff,
       img-window, img-xbm, img-xpm

KEYWORDS

       bmp, gif, ico, image handling, jpeg, pcx, pdf, pixmap, png, postscript, ppm, ps, sgi, sun, tga, tiff, tk, window, xbm, xpm

COPYRIGHT

       Copyright (c) 1995-2009 Jan Nijtmans <nijtmans@users.sourceforge.net>

Img									1.4							      img-intro(n)

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img-png(3tk)															      img-png(3tk)

NAME

       img-png - Img, Portable Network Graphics format (png)

SYNOPSIS

       package require Tk

       package require img::png  ?1.3?

       image create photo ?name? ?options?

DESCRIPTION

       The  package  img::png  is a sub-package of Img. It can be loaded as a part of the complete Img support, via package require Img, or on its
       own, via package require img::png.

       Like all packages of Img it does not provide new commands, but extends the existing Tk command image so that it supports  files	containing
       raster images in the Portable Network Graphics format (png). More specifically img::png extends Tk's photo image type.

       The  name  of  the new format handler is png.  This handler provides new additional configuration options. See section PNG OPTIONS for more
       detailed explanations.

       All of the above means that in a call like

       image create photo ?name? ?options?

       [1]    Image data in png format (options -data and -file) is detected automatically.

       [2]    The format name png is recognized by the option -format.	In addition the value for the option is treated as list  and  may  contain
	      any of the special options listed in section PNG OPTIONS.

PNG OPTIONS

       The  handler  provides no true options at all, but accepts pairs of keys and values when writing a PNG file. Each pair will be written as a
       named text chunk where the key provides the name of the chunk and the value its contents.  For example
	   png Author <name> Title <title> Description ...

TRANSPARENCY

       If you want to write images to disk which contain transparency information (e.g. PNG with alpha channel) you need at least Tk 8.3.

SEE ALSO

       img-bmp, img-gif, img-ico, img-intro, img-jpeg, img-pcx, img-pixmap, img-png, img-ppm, img-ps, img-sgi, img-sun,  img-tga,  img-tiff,  img-
       window, img-xbm, img-xpm

KEYWORDS

       image handling, png, tk

COPYRIGHT

       Copyright (c) 1995-2003 Jan Nijtmans <nijtmans@users.sourceforge.com>

Img									1.3							      img-png(3tk)

Linux and UNIX Man Pages

img(n) [osx man page]

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