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# Spinint
# ----------------------------------------------------------------------
# Implements an integer spinner widget. It inherits basic spinner
# functionality from Spinner and adds specific features to create
# an integer-only spinner.
# Arrows may be placed horizontally or vertically.
# User may specify an integer range and step value.
# Spinner may be configured to wrap when min or max value is reached.
#
# NOTE:
# Spinint integer values should not exceed the size of a long integer.
# For a 32 bit long the integer range is -2147483648 to 2147483647.
#
# ----------------------------------------------------------------------
# AUTHOR: Sue Yockey Phone: (214) 519-2517
# E-mail: syockey@spd.dsccc.com
# yockey@acm.org
#
# @(#) $Id$
# ----------------------------------------------------------------------
# Copyright (c) 1995 DSC Technologies Corporation
# ======================================================================
# Permission to use, copy, modify, distribute and license this software
# and its documentation for any purpose, and without fee or written
# agreement with DSC, is hereby granted, provided that the above copyright
# notice appears in all copies and that both the copyright notice and
# warranty disclaimer below appear in supporting documentation, and that
# the names of DSC Technologies Corporation or DSC Communications
# Corporation not be used in advertising or publicity pertaining to the
# software without specific, written prior permission.
#
# DSC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
# ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, AND NON-
# INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, AND THE
# AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE MAINTENANCE,
# SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. IN NO EVENT SHALL
# DSC 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 PERFORMANCE OF THIS
# SOFTWARE.
# ======================================================================
#
# Usual options.
#
itk::usual Spinint {
keep -background -borderwidth -cursor -foreground -highlightcolor \
-highlightthickness -insertbackground -insertborderwidth \
-insertofftime -insertontime -insertwidth -labelfont \
-selectbackground -selectborderwidth -selectforeground \
-textbackground -textfont
}
# ------------------------------------------------------------------
# SPININT
# ------------------------------------------------------------------
class iwidgets::Spinint {
inherit iwidgets::Spinner
constructor {args} {
Spinner::constructor -validate numeric
} {}
itk_option define -range range Range ""
itk_option define -step step Step 1
itk_option define -wrap wrap Wrap true
public method up {}
public method down {}
}
#
# Provide a lowercased access method for the Spinint class.
#
proc ::iwidgets::spinint {pathName args} {
uplevel ::iwidgets::Spinint $pathName $args
}
# ------------------------------------------------------------------
# CONSTRUCTOR
# ------------------------------------------------------------------
body iwidgets::Spinint::constructor {args} {
eval itk_initialize $args
$itk_component(entry) delete 0 end
if {[lindex $itk_option(-range) 0] == ""} {
$itk_component(entry) insert 0 "0"
} else {
$itk_component(entry) insert 0 [lindex $itk_option(-range) 0]
}
}
# ------------------------------------------------------------------
# OPTIONS
# ------------------------------------------------------------------
# ------------------------------------------------------------------
# OPTION: -range
#
# Set min and max values for spinner.
# ------------------------------------------------------------------
configbody iwidgets::Spinint::range {
if {$itk_option(-range) != ""} {
if {[llength $itk_option(-range)] != 2} {
error "wrong # args: should be\
\"$itk_component(hull) configure -range {begin end}\""
}
set min [lindex $itk_option(-range) 0]
set max [lindex $itk_option(-range) 1]
if {![regexp {^-?[0-9]+$} $min]} {
error "bad range option \"$min\": begin value must be\
an integer"
}
if {![regexp {^-?[0-9]+$} $max]} {
error "bad range option \"$max\": end value must be\
an integer"
}
if {$min > $max} {
error "bad option starting range \"$min\": must be less\
than ending: \"$max\""
}
}
}
# ------------------------------------------------------------------
# OPTION: -step
#
# Increment spinner by step value.
# ------------------------------------------------------------------
configbody iwidgets::Spinint::step {
}
# ------------------------------------------------------------------
# OPTION: -wrap
#
# Specify whether spinner should wrap value if at min or max.
# ------------------------------------------------------------------
configbody iwidgets::Spinint::wrap {
}
# ------------------------------------------------------------------
# METHODS
# ------------------------------------------------------------------
# ------------------------------------------------------------------
# METHOD: up
#
# Up arrow button press event. Increment value in entry.
# ------------------------------------------------------------------
body iwidgets::Spinint::up {} {
set min_range [lindex $itk_option(-range) 0]
set max_range [lindex $itk_option(-range) 1]
set val [$itk_component(entry) get]
if {[lindex $itk_option(-range) 0] != ""} {
#
# Check boundaries.
#
if {$val >= $min_range && $val < $max_range} {
incr val $itk_option(-step)
#
# Re-check boundaries.
#
if {$val >= $min_range && $val <= $max_range} {
$itk_component(entry) delete 0 end
$itk_component(entry) insert 0 $val
} else {
#
# This is wrap when -step > 1.
#
if {$itk_option(-wrap)} {
if {$val > $max_range} {
$itk_component(entry) delete 0 end
$itk_component(entry) insert 0 $min_range
} else {
uplevel #0 $itk_option(-invalid)
}
} else {
uplevel #0 $itk_option(-invalid)
}
}
} else {
if {$itk_option(-wrap)} {
if {$val == $max_range} {
$itk_component(entry) delete 0 end
$itk_component(entry) insert 0 $min_range
} else {
uplevel #0 $itk_option(-invalid)
}
} else {
uplevel #0 $itk_option(-invalid)
}
}
} else {
#
# No boundaries.
#
incr val $itk_option(-step)
$itk_component(entry) delete 0 end
$itk_component(entry) insert 0 $val
}
}
# ------------------------------------------------------------------
# METHOD: down
#
# Down arrow button press event. Decrement value in entry.
# ------------------------------------------------------------------
body iwidgets::Spinint::down {} {
set min_range [lindex $itk_option(-range) 0]
set max_range [lindex $itk_option(-range) 1]
set val [$itk_component(entry) get]
if {[lindex $itk_option(-range) 0] != ""} {
#
# Check boundaries.
#
if {$val > $min_range && $val <= $max_range} {
incr val -$itk_option(-step)
#
# Re-check boundaries.
#
if {$val >= $min_range && $val <= $max_range} {
$itk_component(entry) delete 0 end
$itk_component(entry) insert 0 $val
} else {
#
# This is wrap when -step > 1.
#
if {$itk_option(-wrap)} {
if {$val < $min_range} {
$itk_component(entry) delete 0 end
$itk_component(entry) insert 0 $max_range
} else {
uplevel #0 $itk_option(-invalid)
}
} else {
uplevel #0 $itk_option(-invalid)
}
}
} else {
if {$itk_option(-wrap)} {
if {$val == $min_range} {
$itk_component(entry) delete 0 end
$itk_component(entry) insert 0 $max_range
} else {
uplevel #0 $itk_option(-invalid)
}
} else {
uplevel #0 $itk_option(-invalid)
}
}
} else {
#
# No boundaries.
#
incr val -$itk_option(-step)
$itk_component(entry) delete 0 end
$itk_component(entry) insert 0 $val
}
}
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