img-tiff - Tagged Image File Format (tiff)

Copyright

       Copyright (c) 1995-2024 Jan Nijtmans <nijtmans@users.sourceforge.net>
       Copyright (c) 2002-2024 Andreas Kupries <andreas_kupries@users.sourceforge.net>
       Copyright (c) 2003-2024 Paul Obermeier <obermeier@users.sourceforge.net>

img-tiff                                               2.0                                         img-tiff(3tk)

Description

packagerequireimg::tiff

       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 Tagged Image File Format (tiff). More specifically
       img::tiff extends Tk's photo [https://www.tcl.tk/man/tcl9.0/TkCmd/photo.html] image type.

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

       All of the above means that in a call like imagecreatephoto ?name? ?options?

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

       [2]    The format name tiff is recognized by the option -format.

       In  addition  the value of option -format is treated as a list and may contain any of the special options
       listed in section Options.

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

Name

       img-tiff - Tagged Image File Format (tiff)

Notes

       [1]    Chapter  Multi-pageImages  of the Img manual page describes the handling of images with multiple
              pages.

       [2]    Chapter ImageMetadata of the Img manual page describes the parameters of the  resolution  related
              options.

Options

The handler provides the following options:

-verbosebool
This option is supported for reading and writing. Available since version 2.0.

If set to true, additional information about the read or written image is printed to stdout.
Default is false.

-indexinteger
This option is supported for reading only. Available since version 1.4.0.

Read the page at specified index. The first page is at index 0. Default is 0.

-compressionstring
This option is supported for writing only. Available since version 1.2.4.

Set the compression mode to either none, jpeg, packbits, or deflate. Default is none.

-byteorderstring
This option is supported for writing only. Available since version 1.2.4.

Set the byteorder to either none, bigendian, littleendian, network or smallendian. Default is
none.

The values bigendian and network are aliases of each other, as are littleendian and smallendian.

-resolutionxres ?yres?
This option is supported for writing only. Available since version 2.0.

Set the resolution values of the written image file. If yres is not specified, it is set to the
value of xres.

If option is not specified, the DPI and aspect values of the metadata dictionary are written. If
no metadata values are available, no resolution values are written.

-xresolutionxres
This option is supported for writing only. Available since version 2.0.

Set the horizontal resolution value of the written image file.

-yresolutionyres
This option is supported for writing only. Available since version 2.0.

Set the vertical resolution value of the written image file.

Synopsis

       package require img::tiff?2.0?

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