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- '\"
- '\" Copyright 1993-1994 by AT&T Bell Laboratories.
- '\"
- '\" Permission to use, copy, modify, and distribute this software
- '\" and its documentation for any purpose and without fee is hereby
- '\" granted, provided that the above copyright notice appear in all
- '\" copies and that both that the copyright notice and warranty
- '\" disclaimer appear in supporting documentation, and that the
- '\" names of AT&T Bell Laboratories any of their entities not be used
- '\" in advertising or publicity pertaining to distribution of the
- '\" software without specific, written prior permission.
- '\"
- '\" AT&T disclaims all warranties with regard to this software, including
- '\" all implied warranties of merchantability and fitness. In no event
- '\" shall AT&T be liable for any special, indirect or consequential
- '\" damages or any damages whatsoever resulting from loss of use, data
- '\" or profits, whether in an action of contract, negligence or other
- '\" tortuous action, arising out of or in connection with the use or
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- '\"
- '\" Bitmap command created by George Howlett.
- '\"
- .so man.macros
- .HS blt_bitmap cmds
- .BS
- '\" Note: do not modify the .SH NAME line immediately below!
- .SH NAME
- blt_bitmap \- Define bitmap from data
- .SH SYNOPSIS
- \fBblt_bitmap define \fIname dataList\fR
- .sp
- .VS
- \fBblt_bitmap exists \fIname\fR
- .VE
- .sp
- \fBblt_bitmap bits \fIname\fR
- .sp
- \fBblt_bitmap data \fIname\fR
- .sp
- \fBblt_bitmap height \fIname\fR
- .sp
- \fBblt_bitmap width \fIname\fR
- .sp
- .VS
- \fBblt_bitmap compose \fIname text \fR?\fIoptions\fR?
- .VE
- .BE
- .SH DESCRIPTION
- .PP
- This command creates an internal bitmap for Tk from a list of data
- and associates it with a given name. It essentially offers the
- functionality of \fBTk_DefineBitmap\fR at the Tcl programming level.
- .SH BITMAP COMMANDS
- The following commands are available for \fBblt_bitmap\fR:
- .TP
- \fBblt_bitmap define \fIname dataList\fR
- Associates \fIname\fR with in-memory bitmap data so that \fIname\fR can
- be used in later calls to \fBTk_GetBitmap\fR.
- The \fIname\fR argument is the name of the bitmap; it must
- not previously have been defined in either a call to Tk_DefineBitmap or
- \fBblt_bitmap\fR. The argument \fIdataList\fP describes
- the bitmap to be created. It is a list of two elements, the dimensions
- and source data. The dimensions are a list of two numbers which are
- the width and height of the bitmap. The source data is a list
- of hexadecimal values in a format similar to the X11 or X10 bitmap format.
- The values may be optionally separated by commas and do not need to
- be prefixed with "\fC0x\fR".
- .TP
- \fBblt_bitmap exists \fIname\fR
- .VS
- Returns "1" if a bitmap \fIname\fR exists, otherwise "0".
- .TP
- \fBblt_bitmap bits \fIname\fR
- Returns the source data of the bitmap \fIname\fR. The source data is a
- list of the hexadecimal values.
- It is an error if \fIname\fR does not represent a valid bitmap.
- .TP
- \fBblt_bitmap data \fIname\fR
- Returns a list of both the dimensions of the bitmap \fIname\fR and its
- source data.
- It is an error if \fIname\fR does not represent a valid bitmap.
- .TP
- \fBblt_bitmap height \fIname\fR
- Returns the height of the bitmap \fIname\fR.
- It is an error if \fIname\fR does not represent a valid bitmap.
- .TP
- \fBblt_bitmap width \fIname\fR
- Returns the width of the bitmap \fIname\fR.
- It is an error if \fIname\fR does not represent a valid bitmap.
- .TP
- \fBblt_bitmap compose \fIname text \fR?\fIoptions\fR?
- Creates a bitmap \fIname\fR from the text string \fItext\fR.
- A bitmap \fIname\fR can not already exist.
- The following options are available.
- .RS
- .TP
- \fB\-font \fIfontName\fR
- Specifies a font to use when drawing text into the bitmap.
- If this option isn't specified then \fIfontName\fR defaults to
- \fC*-Helvetica-Bold-R-Normal-*-140-*\fR.
- .TP
- \fB\-rotate \fItheta\fR
- Specifies the angle of rotation of the text in the bitmap.
- \fITheta\fR is a real number representing the angle in degrees.
- It defaults to \fC0.0\fR degrees.
- .RE
- .VE
- .SH EXAMPLES
- The following examples demonstrate the various forms \fIdataList\fR
- may take in the \fBblt_bitmap\fR command.
- .PP
- The elements may or may not be separated by commas.
- .DS
- \fCblt_bitmap define light_gray { { 4 2 } { 0x08, 0x02 } }\fR
- \fCblt_bitmap define light_gray { { 4 2 } { 0x08 0x02 } }\fR
- .DE
- .PP
- Each element is a hexadecimal number which is optionally prefixed
- by "\fC0x\fR".
- .DS
- \fCblt_bitmap define light_gray { { 4 2 } { 8 2 } }\fR
- .DE
- .PP
- The hex values of data can be represented in either X11 or X10 bitmap
- format. In X11 bitmap format, each element is an unsigned character.
- .DS
- \fCblt_bitmap define face { { 16 16 } {
- 0x1f, 0xf8, 0xc7, 0xe3, 0xf3, 0xcf, 0xf9, 0x9f,
- 0xfd, 0xbf, 0xcc, 0x33, 0xfe, 0x7f, 0xfe, 0x7f,
- 0x7e, 0x7e, 0xfe, 0x7f, 0xec, 0x37, 0xdd, 0xbb,
- 0x39, 0x9c, 0xf3, 0xcf, 0xc7, 0xe3, 0x1f, 0xf8 }
- }\fR
- .DE
- .PP
- While in X10 format, they instead represent short integers.
- .DS
- \fCblt_bitmap define face { 16 16 } {
- 0xf81f, 0xe3c7, 0xcff3, 0x9ff9, 0xbffd, 0x33cc,
- 0x7ffe, 0x7ffe, 0x7e7e, 0x7ffe, 0x37ec, 0xbbdd,
- 0x9c39, 0xcff3, 0xe3c7, 0xf81f
- }\fR
- .DE
- .SH BUGS
- .PP
- There is no way to delete or redefine a bitmap.
- .SH KEYWORDS
- bitmap
-