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Diffstat (limited to 'tkimg/doc/img-png.man')
-rw-r--r-- | tkimg/doc/img-png.man | 73 |
1 files changed, 0 insertions, 73 deletions
diff --git a/tkimg/doc/img-png.man b/tkimg/doc/img-png.man deleted file mode 100644 index 1acf491..0000000 --- a/tkimg/doc/img-png.man +++ /dev/null @@ -1,73 +0,0 @@ -[comment {-*- tcl -*- doctools}] -[vset FORMATNAME png] -[vset FORMATFULLNAME {Portable Network Graphics format}] - -[include format-header.inc] - -This handler provides new additional configuration options. See -section [sectref {PNG OPTIONS}] for more detailed explanations. - - -[include format-middle.inc] - - -In addition the value for the option is treated as list and may -contain any of the special options listed in section - -[sectref {PNG OPTIONS}]. - -[list_end] - - - -[section {PNG OPTIONS}] - -The handler provides the following options: - -[list_begin definitions] - -[lst_item "[option -matte] [arg bool]"] - -This option is supported for reading only. -[nl] -If set to [const false], a matte (alpha) channel is ignored -during reading or writing. Default is [const true]. - - -[lst_item "[option -alpha] [arg float]"] - -This option is supported for reading only. -[nl] -An additional alpha filtering for the overall image, which -allows the background on which the image is displayed to show through. -This usually also has the effect of desaturating the image. -The alphaValue must be between 0.0 and 1.0. -Specifying an alpha value, overrides the setting of the matte flag, -i.e. reading a file which has no alpha channel (Greyscale, RGB) will -add an alpha channel to the image independent of the matte flag setting. - -[list_end] - -The handler provides no true write 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 - -[example { - png Author <name> Title <title> Description ... -}] - - -[section TRANSPARENCY] - -If you want to write images to disk which contain transparency -information (e.g. PNG with alpha channel) you need at least - -[package Tk] 8.3. - - - -[list_begin definitions] -[include format-footer.inc] |