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# -*- mode: TCL; fill-column: 75; tab-width: 8; coding: iso-latin-1-unix -*-
#
# $Id: Primitiv.tcl,v 1.7 2004/03/28 02:44:57 hobbs Exp $
#
# Primitiv.tcl --
#
# This is the primitive widget. It is just a frame with proper
# inheritance wrapping. All new Tix widgets will be derived from
# this widget
#
# Copyright (c) 1993-1999 Ioi Kim Lam.
# Copyright (c) 2000-2001 Tix Project Group.
#
# See the file "license.terms" for information on usage and redistribution
# of this file, and for a DISCLAIMER OF ALL WARRANTIES.
#
# No superclass, so the superclass switch is not used
#
#
tixWidgetClass tixPrimitive {
-virtual true
-superclass {}
-classname TixPrimitive
-method {
cget configure subwidget subwidgets
}
-flag {
-background -borderwidth -cursor
-height -highlightbackground -highlightcolor -highlightthickness
-options -relief -takefocus -width -bd -bg
}
-static {
-options
}
-configspec {
{-background background Background #d9d9d9}
{-borderwidth borderWidth BorderWidth 0}
{-cursor cursor Cursor ""}
{-height height Height 0}
{-highlightbackground highlightBackground HighlightBackground #c3c3c3}
{-highlightcolor highlightColor HighlightColor black}
{-highlightthickness highlightThickness HighlightThickness 0}
{-options options Options ""}
{-relief relief Relief flat}
{-takefocus takeFocus TakeFocus 0 tixVerifyBoolean}
{-width width Width 0}
}
-alias {
{-bd -borderwidth}
{-bg -background}
}
}
#----------------------------------------------------------------------
# ClassInitialization:
#----------------------------------------------------------------------
# not used
# Implemented in C
#
# Override: never
proc tixPrimitive:Constructor {w args} {
upvar #0 $w data
upvar #0 $data(className) classRec
# Set up some minimal items in the class record.
#
set data(w:root) $w
set data(rootCmd) $w:root
# We need to create the root widget in order to parse the options
# database
tixCallMethod $w CreateRootWidget
# Parse the default options from the options database
#
tixPrimitive:ParseDefaultOptions $w
# Parse the options supplied by the user
#
tixPrimitive:ParseUserOptions $w $args
# Rename the widget command so that it can be use to access
# the methods of this class
tixPrimitive:MkWidgetCmd $w
# Inistalize the Widget Record
#
tixCallMethod $w InitWidgetRec
# Construct the compound widget
#
tixCallMethod $w ConstructWidget
# Do the bindings
#
tixCallMethod $w SetBindings
# Call the configuration methods for all "force call" options
#
foreach option $classRec(forceCall) {
tixInt_ChangeOptions $w $option $data($option)
}
}
# Create only the root widget. We need the root widget to query the option
# database.
#
# Override: seldom. (unless you want to use a toplevel as root widget)
# Chain : never.
proc tixPrimitive:CreateRootWidget {w args} {
upvar #0 $w data
upvar #0 $data(className) classRec
frame $w -class $data(ClassName)
}
proc tixPrimitive:ParseDefaultOptions {w} {
upvar #0 $w data
upvar #0 $data(className) classRec
# SET UP THE INSTANCE RECORD ACCORDING TO DEFAULT VALUES IN
# THE OPTIONS DATABASE
#
foreach option $classRec(options) {
set spec [tixInt_GetOptionSpec $data(className) $option]
if {[lindex $spec 0] eq "="} {
continue
}
set o_name [lindex $spec 1]
set o_class [lindex $spec 2]
set o_default [lindex $spec 3]
if {![catch {option get $w $o_name $o_class} db_default]} {
if {$db_default ne ""} {
set data($option) $db_default
} else {
set data($option) $o_default
}
} else {
set data($option) $o_default
}
}
}
proc tixPrimitive:ParseUserOptions {w arglist} {
upvar #0 $w data
upvar #0 $data(className) classRec
# SET UP THE INSTANCE RECORD ACCORDING TO COMMAND ARGUMENTS FROM
# THE USER OF THE TIX LIBRARY (i.e. Application programmer:)
#
foreach {option arg} $arglist {
if {[lsearch $classRec(options) $option] != "-1"} {
set spec [tixInt_GetOptionSpec $data(className) $option]
if {[lindex $spec 0] ne "="} {
set data($option) $arg
} else {
set realOption [lindex $spec 1]
set data($realOption) $arg
}
} else {
error "unknown option $option. Should be: [tixInt_ListOptions $w]"
}
}
}
#----------------------------------------------------------------------
# Initialize the widget record
#
#
# Override: always
# Chain : always, before
proc tixPrimitive:InitWidgetRec {w} {
# default: do nothing
}
#----------------------------------------------------------------------
# SetBindings
#
#
# Override: sometimes
# Chain : sometimes, before
#
bind TixDestroyHandler <Destroy> {
[tixGetMethod %W [set %W(className)] Destructor] %W
}
proc tixPrimitive:SetBindings {w} {
upvar #0 $w data
if {[winfo toplevel $w] eq $w} {
bindtags $w [concat TixDestroyHandler [bindtags $w]]
} else {
bind $data(w:root) <Destroy> \
"[tixGetMethod $w $data(className) Destructor] $w"
}
}
#----------------------------------------------------------------------
# PrivateMethod: ConstructWidget
#
# Construct and set up the compound widget
#
# Override: sometimes
# Chain : sometimes, before
#
proc tixPrimitive:ConstructWidget {w} {
upvar #0 $w data
$data(rootCmd) config \
-background $data(-background) \
-borderwidth $data(-borderwidth) \
-cursor $data(-cursor) \
-relief $data(-relief)
if {$data(-width) != 0} {
$data(rootCmd) config -width $data(-width)
}
if {$data(-height) != 0} {
$data(rootCmd) config -height $data(-height)
}
set rootname *[string range $w 1 end]
foreach {spec value} $data(-options) {
option add $rootname*$spec $value 100
}
}
#----------------------------------------------------------------------
# PrivateMethod: MkWidgetCmd
#
# Construct and set up the compound widget
#
# Override: sometimes
# Chain : sometimes, before
#
proc tixPrimitive:MkWidgetCmd {w} {
upvar #0 $w data
rename $w $data(rootCmd)
tixInt_MkInstanceCmd $w
}
#----------------------------------------------------------------------
# ConfigOptions:
#----------------------------------------------------------------------
#----------------------------------------------------------------------
# ConfigMethod: config
#
# Configure one option.
#
# Override: always
# Chain : automatic.
#
# Note the hack of [winfo width] in this procedure
#
# The hack is necessary because of the bad interaction between TK's geometry
# manager (the packer) and the frame widget. The packer determines the size
# of the root widget of the ComboBox (a frame widget) according to the
# requirement of the slaves inside the frame widget, NOT the -width
# option of the frame widget.
#
# However, everytime the frame widget is
# configured, it sends a geometry request to the packer according to its
# -width and -height options and the packer will temporarily resize
# the frame widget according to the requested size! The packer then realizes
# something is wrong and revert to the size determined by the slaves. This
# cause a flash on the screen.
#
foreach opt {-height -width -background -borderwidth -cursor
-highlightbackground -highlightcolor -relief -takefocus -bd -bg} {
set tixPrimOpt($opt) 1
}
proc tixPrimitive:config {w option value} {
global tixPrimOpt
upvar #0 $w data
if {[info exists tixPrimOpt($option)]} {
$data(rootCmd) config $option $value
}
}
#----------------------------------------------------------------------
# PublicMethods:
#----------------------------------------------------------------------
#----------------------------------------------------------------------
# This method is used to implement the "subwidgets" widget command.
# Will be re-written in C. It can't be used as a public method because
# of the lame substring comparison routines used in tixClass.c
#
#
proc tixPrimitive:subwidgets {w type args} {
upvar #0 $w data
case $type {
-class {
set name [lindex $args 0]
set args [lrange $args 1 end]
# access subwidgets of a particular class
#
# note: if $name=="Frame", will *not return the root widget as well
#
set sub ""
foreach des [tixDescendants $w] {
if {[winfo class $des] eq $name} {
lappend sub $des
}
}
# Note: if the there is no subwidget of this class, does not
# cause any error.
#
if {$args eq ""} {
return $sub
} else {
foreach des $sub {
eval [linsert $args 0 $des]
}
return ""
}
}
-group {
set name [lindex $args 0]
set args [lrange $args 1 end]
# access subwidgets of a particular group
#
if {[info exists data(g:$name)]} {
if {$args eq ""} {
set ret ""
foreach item $data(g:$name) {
lappend ret $w.$item
}
return $ret
} else {
foreach item $data(g:$name) {
eval [linsert $args 0 $w.$item]
}
return ""
}
} else {
error "no such subwidget group $name"
}
}
-all {
set sub [tixDescendants $w]
if {$args eq ""} {
return $sub
} else {
foreach des $sub {
eval [linsert $args 0 $des]
}
return ""
}
}
default {
error "unknown flag $type, should be -all, -class or -group"
}
}
}
#----------------------------------------------------------------------
# PublicMethod: subwidget
#
# Access a subwidget withe a particular name
#
# Override: never
# Chain : never
#
# This is implemented in native C code in tixClass.c
#
proc tixPrimitive:subwidget {w name args} {
upvar #0 $w data
if {[info exists data(w:$name)]} {
if {$args eq ""} {
return $data(w:$name)
} else {
return [eval [linsert $args 0 $data(w:$name)]]
}
} else {
error "no such subwidget $name"
}
}
#----------------------------------------------------------------------
# PrivateMethods:
#----------------------------------------------------------------------
# delete the widget record and remove the command
#
proc tixPrimitive:Destructor {w} {
upvar #0 $w data
if {![info exists data(w:root)]} {
return
}
if {[llength [info commands $w]]} {
# remove the command
rename $w ""
}
if {[llength [info commands $data(rootCmd)]]} {
# remove the command of the root widget
rename $data(rootCmd) ""
}
# delete the widget record
catch {unset data}
}