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# bitmap.tcl --
#
# A template demonstrating the handling of bitmap conversions.
#
# Copyright (c) 2014,2022 Andreas Kupries <andreas_kupries@users.sourceforge.net>
# # ## ### ##### ######## ############# #####################
## Requirements
package require Tcl 8.6 9
package require critcl 3.2
package require critcl::bitmap 1
# # ## ### ##### ######## ############# #####################
## Administrivia
critcl::license {Andreas Kupries} BSD
critcl::summary {Bitmap conversion}
critcl::description {
This package implements nothing. It serves only as a
demonstration and template on how to declare a bitmap
converter and use it in cproc's or ccommand's.
}
critcl::subject demonstration {bitmap conversion} {encode bitmap} \
{decode bitmap} {convert bitmap}
# # ## ### ##### ######## ############# #####################
## C code.
critcl::bitmap::def demo {
global 1
exact 2
filler 4
}
critcl::cproc encode {Tcl_Interp* ip Tcl_Obj* flags} int {
int mask;
demo_encode (ip, flags, &mask);
return mask;
}
critcl::cproc decode {Tcl_Interp* ip int mask} object {
Tcl_Obj* res = demo_decode (ip, mask);
Tcl_IncrRefCount (res);
return res;
}
# Encode hidden in the argtype.
critcl::cproc xencode {Tcl_Interp* ip demo flags} int {
return flags;
}
# Decode hidden in the resultype
critcl::cproc xdecode {Tcl_Interp* ip int mask} demo {
return mask;
}
# encode {exact filler} => 6
# decode 5 => {global filler}
# ### ### ### ######### ######### #########
## Ready
package provide bitmap 1
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