spinner.itk

这是一个Linux下的集成开发环境

# Spinner 
# ----------------------------------------------------------------------
# Implements a spinner widget.  The Spinner is comprised of an  
# EntryField plus up and down arrow buttons. 
# Spinner is meant to be used as a base class for creating more
# specific spinners such as SpinInt.itk
# Arrows may be drawn horizontally or vertically.
# User may define arrow behavior or accept the default arrow behavior.
#
# ----------------------------------------------------------------------
#   AUTHOR:  Sue Yockey               Phone: [phone]
#                                     E-mail: [e-mail]
#                                             [e-mail]
#
#   @(#) $Id: spinner.itk,v 1.1 2003/02/05 10:54:09 mdejong Exp $
# ----------------------------------------------------------------------
#            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 Spinner {
    keep -background -borderwidth -cursor -foreground -highlightcolor \
	 -highlightthickness -insertbackground -insertborderwidth \
	 -insertofftime -insertontime -insertwidth -labelfont \
	 -selectbackground -selectborderwidth -selectforeground \
	 -textbackground -textfont
}

# ------------------------------------------------------------------
#                              SPINNER
# ------------------------------------------------------------------
class iwidgets::Spinner {
    inherit iwidgets::Entryfield 

    constructor {args} {}
    destructor {}

    itk_option define -arroworient arrowOrient Orient vertical
    itk_option define -textfont textFont \
	    Font -Adobe-Helvetica-Medium-R-Normal--*-120-*-*-*-*-*-*
    itk_option define -borderwidth borderWidth BorderWidth 2
    itk_option define -highlightthickness highlightThickness \
	    HighlightThickness 2
    itk_option define -increment increment Command {}
    itk_option define -decrement decrement Command {}
    itk_option define -repeatdelay repeatDelay RepeatDelay 300 
    itk_option define -repeatinterval repeatInterval RepeatInterval 100
    itk_option define -foreground foreground Foreground black

    public method down {}
    public method up {}

    protected method _pushup {}
    protected method _pushdown {}
    protected method _relup {}
    protected method _reldown {}
    protected method _doup {rate}
    protected method _dodown {rate}
    protected method _up {}
    protected method _down {}

    protected method _positionArrows {{when later}}

    protected variable _interior {}
    protected variable _reposition ""  ;# non-null => _positionArrows pending
    protected variable _uptimer ""     ;# non-null => _uptimer pending
    protected variable _downtimer ""   ;# non-null => _downtimer pending
}
    
#
# Provide a lowercased access method for the Spinner class.
# 
proc ::iwidgets::spinner {pathName args} {
    uplevel ::iwidgets::Spinner $pathName $args
}

# ------------------------------------------------------------------
#                        CONSTRUCTOR
# ------------------------------------------------------------------
body iwidgets::Spinner::constructor {args} {
    #
    # Save off the interior for later use.
    #
    set _interior $itk_interior
    
    #
    # Create up arrow button.
    # 
    itk_component add uparrow {
	canvas $itk_interior.uparrow -height 10 -width 10 \
		-relief raised -highlightthickness 0
    } {
	keep -background -borderwidth
    }
    
    #
    # Create down arrow button.
    # 
    itk_component add downarrow {
	canvas $itk_interior.downarrow -height 10 -width 10 \
		-relief raised -highlightthickness 0
    } {
	keep -background -borderwidth
    }

    #
    # Add bindings for button press events on the up and down buttons.
    #
    bind $itk_component(uparrow) <ButtonPress-1> [code $this _pushup]
    bind $itk_component(uparrow) <ButtonRelease-1> [code $this _relup]

    bind $itk_component(downarrow)  <ButtonPress-1> [code $this _pushdown]
    bind $itk_component(downarrow) <ButtonRelease-1> [code $this _reldown]
    
    eval itk_initialize $args

    # 
    # When idle, position the arrows.
    #
    _positionArrows
}

# ------------------------------------------------------------------
#                          DESTRUCTOR
# ------------------------------------------------------------------

body iwidgets::Spinner::destructor {} {
    if {$_reposition != ""} {after cancel $_reposition}
    if {$_uptimer != ""} {after cancel $_uptimer}
    if {$_downtimer != ""} {after cancel $_downtimer}
}

# ------------------------------------------------------------------
#                             OPTIONS
# ------------------------------------------------------------------

# ------------------------------------------------------------------
# OPTION: -arroworient
#
# Place arrows vertically or horizontally .
# ------------------------------------------------------------------
configbody iwidgets::Spinner::arroworient {
    _positionArrows
}

# ------------------------------------------------------------------
# OPTION: -textfont
#
# Change font, resize arrow buttons.
# ------------------------------------------------------------------
configbody iwidgets::Spinner::textfont {
    _positionArrows
}

# ------------------------------------------------------------------
# OPTION: -highlightthickness
#
# Change highlightthickness, resize arrow buttons.
# ------------------------------------------------------------------
configbody iwidgets::Spinner::highlightthickness {
    _positionArrows
}

# ------------------------------------------------------------------
# OPTION: -borderwidth
#
# Change borderwidth, resize arrow buttons.
# ------------------------------------------------------------------
configbody iwidgets::Spinner::borderwidth {
    _positionArrows
}

# ------------------------------------------------------------------
# OPTION: -increment
#
# Up arrow callback. 
# ------------------------------------------------------------------
configbody iwidgets::Spinner::increment {
    if {$itk_option(-increment) == {}} {
	set itk_option(-increment) [code $this up]
    }
}

# ------------------------------------------------------------------
# OPTION: -decrement
#
# Down arrow callback. 
# ------------------------------------------------------------------
configbody iwidgets::Spinner::decrement {
    if {$itk_option(-decrement) == {}} {
	set itk_option(-decrement) [code $this down]
    }
}

# ------------------------------------------------------------------
# OPTION: -repeatinterval
#
# Arrow repeat rate in milliseconds. A repeatinterval of 0 disables 
# button repeat.
# ------------------------------------------------------------------
configbody iwidgets::Spinner::repeatinterval {
    if {$itk_option(-repeatinterval) < 0} {
       set itk_option(-repeatinterval) 0