73 lines
3.1 KiB
Plaintext
73 lines
3.1 KiB
Plaintext
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'\" Color=Green
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'\"
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'\" Copyright (c) 1995 Sun Microsystems, Inc.
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'\"
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'\" See the file "license.terms" for information on usage and redistribution
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'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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'\"
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'\" @(#) palette.n 1.3 95/08/12 17:35:36
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'\"
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.so STk-man.macros
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.TH Tk:set-palette! n 3.1 STk "Tk Built-In Commands"
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.BS
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'\" Note: do not modify the .SH NAME line immediately below!
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.SH NAME
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Tk:set-palette!, Tk:bisque \- Modify the Tk color palette
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.SH SYNOPSIS
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(\fBTk:set-palette! \fIbackground\fR)
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.sp
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(\fBTk:set-palette! \fIname value \fR?\fIname value ...\fR?)
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.sp
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(\fBTk:bisque\fR)
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.BE
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.SH DESCRIPTION
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.PP
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The \fBTk:set-palette!\fR procedure changes the color scheme for Tk.
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It does this by modifying the colors of existing widgets and by changing
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the option database so that future widgets will use the new color scheme.
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If \fBTk:set-palette!\fR is invoked with a single argument, the
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argument is the name of a color to use as the normal background
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color; \fBTk:set-palette!\fR will compute a complete color palette
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from this background color.
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Alternatively, the arguments to \fBTk:set-palette!\fR may consist of any number
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of \fIname\fR\-\fIvalue\fR pairs, where the first argument of the pair
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is the name of an option in the Tk option database and the second
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argument is the new value to use for that option. The following
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database names are currently supported:
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.DS L
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.ta 4c 8c
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\fBactiveBackground foreground selectColor
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activeForeground highlightBackground selectBackground
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background highlightColor selectForeground
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disabledForeground insertBackground troughColor\fR
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.DE
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\fBTk:set-palette!\fR tries to compute reasonable defaults for any
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options that you don't specify. You can specify options other
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than the above ones and Tk will change those options on widgets as
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well. This feature may be useful if you are using custom widgets with
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additional color options.
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.PP
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Once it has computed the new value to use for each of the color options,
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\fBTk:set-palette!\fR scans the widget hierarchy to modify the options
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of all existing widgets. For each widget, it checks to see if any
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of the above options is defined for the widget. If so, and if the
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option's current value is the default, then the value is changed; if
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the option has a value other than the default, \fBTk:set-palette!\fR
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will not change it. The default for an option is the one provided by
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the widget \fB(list-ref (w 'configure option) 3)\fR unless
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\fBTk:set-palette!\fR has been run previously, in which case it is the
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value specified in the previous invocation of \fBTk:set-palette!\fR.
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.PP
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After modifying all the widgets in the application, \fBTk:set-palette!\fR
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adds options to the option database to change the defaults for
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widgets created in the future. The new options are added at
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priority \fBwidgetDefault\fR, so they will be overridden by options
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from the .Xdefaults file or options specified on the command-line
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that creates a widget.
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.PP
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The procedure \fBTk:bisque\fR is provided for backward compatibility:
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it restores the application's colors to the light brown (``bisque'')
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color scheme used in Tk 3.6 and earlier versions.
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