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authorWilliam Joye <wjoye@cfa.harvard.edu>2018-12-25 19:55:50 (GMT)
committerWilliam Joye <wjoye@cfa.harvard.edu>2018-12-25 19:55:50 (GMT)
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-'\"
-'\" Copyright (c) 1994 The Regents of the University of California.
-'\" Copyright (c) 1994-1996 Sun Microsystems, Inc.
-'\"
-'\" See the file "license.terms" for information on usage and redistribution
-'\" of this file, and for a DISCLAIMER OF ALL WARRANTIES.
-'\"
-.TH bitmap n 4.0 Tk "Tk Built-In Commands"
-.so man.macros
-.BS
-'\" Note: do not modify the .SH NAME line immediately below!
-.SH NAME
-bitmap \- Images that display two colors
-.SH SYNOPSIS
-.nf
-\fBimage create bitmap \fR?\fIname\fR? ?\fIoptions\fR?
-
-\fIimageName \fBcget\fR \fIoption\fR
-\fIimageName \fBconfigure\fR ?\fIoption\fR? ?\fIvalue option value ...\fR?
-.fi
-.BE
-.SH DESCRIPTION
-.PP
-A bitmap is an image whose pixels can display either of two colors
-or be transparent.
-A bitmap image is defined by four things: a background color,
-a foreground color, and two bitmaps, called the \fIsource\fR
-and the \fImask\fR.
-Each of the bitmaps specifies 0/1 values for a rectangular
-array of pixels, and the two bitmaps must have the same
-dimensions.
-For pixels where the mask is zero, the image displays nothing,
-producing a transparent effect.
-For other pixels, the image displays the foreground color if
-the source data is one and the background color if the source
-data is zero.
-.SH "CREATING BITMAPS"
-.PP
-Like all images, bitmaps are created using the \fBimage create\fR
-command.
-Bitmaps support the following \fIoptions\fR:
-.TP
-\fB\-background \fIcolor\fR
-.
-Specifies a background color for the image in any of the standard
-ways accepted by Tk. If this option is set to an empty string
-then the background pixels will be transparent. This effect
-is achieved by using the source bitmap as the mask bitmap, ignoring
-any \fB\-maskdata\fR or \fB\-maskfile\fR options.
-.TP
-\fB\-data \fIstring\fR
-.
-Specifies the contents of the source bitmap as a string.
-The string must adhere to X11 bitmap format (e.g., as generated
-by the \fBbitmap\fR program).
-If both the \fB\-data\fR and \fB\-file\fR options are specified,
-the \fB\-data\fR option takes precedence.
-.TP
-\fB\-file \fIname\fR
-.
-\fIname\fR gives the name of a file whose contents define the
-source bitmap.
-The file must adhere to X11 bitmap format (e.g., as generated
-by the \fBbitmap\fR program).
-.TP
-\fB\-foreground \fIcolor\fR
-.
-Specifies a foreground color for the image in any of the standard
-ways accepted by Tk.
-.TP
-\fB\-maskdata \fIstring\fR
-.
-Specifies the contents of the mask as a string.
-The string must adhere to X11 bitmap format (e.g., as generated
-by the \fBbitmap\fR program).
-If both the \fB\-maskdata\fR and \fB\-maskfile\fR options are specified,
-the \fB\-maskdata\fR option takes precedence.
-.TP
-\fB\-maskfile \fIname\fR
-.
-\fIname\fR gives the name of a file whose contents define the
-mask.
-The file must adhere to X11 bitmap format (e.g., as generated
-by the \fBbitmap\fR program).
-.SH "IMAGE COMMAND"
-.PP
-When a bitmap image is created, Tk also creates a new command
-whose name is the same as the image.
-This command may be used to invoke various operations
-on the image.
-It has the following general form:
-.CS
-\fIimageName option \fR?\fIarg arg ...\fR?
-.CE
-\fIOption\fR and the \fIarg\fRs
-determine the exact behavior of the command. The following
-commands are possible for bitmap images:
-.TP
-\fIimageName \fBcget\fR \fIoption\fR
-.
-Returns the current value of the configuration option given
-by \fIoption\fR.
-\fIOption\fR may have any of the values accepted by the
-\fBimage create\fR \fBbitmap\fR command.
-.TP
-\fIimageName \fBconfigure\fR ?\fIoption\fR? ?\fIvalue option value ...\fR?
-.
-Query or modify the configuration options for the image.
-If no \fIoption\fR is specified, returns a list describing all of
-the available options for \fIimageName\fR (see \fBTk_ConfigureInfo\fR for
-information on the format of this list). If \fIoption\fR is specified
-with no \fIvalue\fR, then the command returns a list describing the
-one named option (this list will be identical to the corresponding
-sublist of the value returned if no \fIoption\fR is specified). If
-one or more \fIoption\-value\fR pairs are specified, then the command
-modifies the given option(s) to have the given value(s); in
-this case the command returns an empty string.
-\fIOption\fR may have any of the values accepted by the
-\fBimage create\fR \fBbitmap\fR command.
-.SH KEYWORDS
-bitmap, image
-'\" Local Variables:
-'\" mode: nroff
-'\" End: