This file is indexed.

/usr/share/tcltk/iwidgets4.1.0/scripts/dateentry.itk is in iwidgets4 4.1.0-1.

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The actual contents of the file can be viewed below.

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#
# Dateentry
# ----------------------------------------------------------------------
# Implements a quicken style date entry field with a popup calendar
# by combining the datefield and calendar widgets together.  This
# allows a user to enter the date via the keyboard or by using the
# mouse by selecting the calendar icon which brings up a popup calendar.
# ----------------------------------------------------------------------
#   AUTHOR:  Mark L. Ulferts          E-mail: mulferts@austin.dsccc.com
#
#   @(#) $Id: dateentry.itk,v 1.7 2003/01/30 20:56:05 smithc Exp $
# ----------------------------------------------------------------------
#            Copyright (c) 1997 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.
# ======================================================================
#
# ----------------------------------------------------------------------
#
# Modified 2001-10-23 by Mark Alston to pass options to the datefield 
# constructor.  Needed to allow use of new option -int which lets the 
# user use dates in YYYY-MM-DD format as well as MM/DD/YYYY format.
#
# option -int yes sets dates to YYYY-MM-DD format
#        -int no sets dates to MM/DD/YYYY format.
#
# ----------------------------------------------------------------------
#
# Usual options.
#
itk::usual Dateentry {
    keep -background -borderwidth -currentdatefont -cursor \
	-datefont -dayfont -foreground -highlightcolor \
	-highlightthickness -labelfont -textbackground -textfont \
	-titlefont -int
}

# ------------------------------------------------------------------
#                              DATEENTRY
# ------------------------------------------------------------------
itcl::class iwidgets::Dateentry {
    inherit iwidgets::Datefield

    constructor {args} {
	eval Datefield::constructor $args
    } {}

    itk_option define -grab grab Grab "global"
    itk_option define -icon icon Icon {}
    
    #
    # The calendar widget isn't created until needed, yet we need
    # its options to be available upon creation of a dateentry widget.
    # So, we'll define them in these class now so they can just be
    # propagated onto the calendar later.
    #
    itk_option define -days days Days {Su Mo Tu We Th Fr Sa}
    itk_option define -forwardimage forwardImage Image {}
    itk_option define -backwardimage backwardImage Image {}
    itk_option define -weekdaybackground weekdayBackground Background \#d9d9d9
    itk_option define -weekendbackground weekendBackground Background \#d9d9d9
    itk_option define -outline outline Outline \#d9d9d9
    itk_option define -buttonforeground buttonForeground Foreground blue
    itk_option define -foreground foreground Foreground black
    itk_option define -selectcolor selectColor Foreground red
    itk_option define -selectthickness selectThickness SelectThickness 3
    itk_option define -titlefont titleFont Font \
	-*-helvetica-bold-r-normal--*-140-*
    itk_option define -dayfont dayFont Font \
	-*-helvetica-medium-r-normal--*-120-*
    itk_option define -datefont dateFont Font \
	-*-helvetica-medium-r-normal--*-120-*
    itk_option define -currentdatefont currentDateFont Font \
	-*-helvetica-bold-r-normal--*-120-*
    itk_option define -startday startDay Day sunday
    itk_option define -height height Height 165
    itk_option define -width width Width 200
    itk_option define -state state State normal

    protected {
	method _getPopupDate {date}
	method _releaseGrab {}
	method _releaseGrabCheck {rootx rooty}
	method _popup {}
	method _getDefaultIcon {}

        common _defaultIcon ""
    }
}

#
# Provide a lowercased access method for the dateentry class.
# 
proc ::iwidgets::dateentry {pathName args} {
    uplevel ::iwidgets::Dateentry $pathName $args
}

# ------------------------------------------------------------------
#                        CONSTRUCTOR
# ------------------------------------------------------------------
itcl::body iwidgets::Dateentry::constructor {args} {
    #
    # Create an icon label to act as a button to bring up the 
    # calendar popup.
    #
    itk_component add iconbutton {
	label $itk_interior.iconbutton -relief raised
    } {
	keep -borderwidth -cursor -foreground 
    }
    grid $itk_component(iconbutton) -row 0 -column 0 -sticky ns
    
    #
    # Initialize the widget based on the command line options.
    #
    eval itk_initialize $args
}

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

# ------------------------------------------------------------------
# OPTION: -icon
#
# Specifies the calendar icon image to be used in the date.
# Should one not be provided, then a default pixmap will be used
# if possible, bitmap otherwise.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Dateentry::icon {
    if {$itk_option(-icon) == {}} {
	$itk_component(iconbutton) configure -image [_getDefaultIcon]
    } else {
	if {[lsearch [image names] $itk_option(-icon)] == -1} {
	    error "bad icon option \"$itk_option(-icon)\":\
                   should be an existing image"
	} else {
	    $itk_component(iconbutton) configure -image $itk_option(-icon)
	}
    }
}

# ------------------------------------------------------------------
# OPTION: -grab
#
# Specifies the grab level, local or global, to be obtained when 
# bringing up the popup calendar.  The default is global.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Dateentry::grab {
    switch -- $itk_option(-grab) {
	"local" - "global" {}
	default {
	    error "bad grab option \"$itk_option(-grab)\":\
                   should be local or global"
	}
    }
}

# ------------------------------------------------------------------
# OPTION: -state
#
# Specifies the state of the widget which may be disabled or
# normal.  A disabled state prevents selection of the date field
# or date icon button.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Dateentry::state {
    switch -- $itk_option(-state) {
	normal {
	    bind $itk_component(iconbutton) <Button-1> [itcl::code $this _popup]
	}
	disabled {
	    bind $itk_component(iconbutton) <Button-1> {}
	}
    }
}

# ------------------------------------------------------------------
#                            METHODS
# ------------------------------------------------------------------

# ------------------------------------------------------------------
# PROTECTED METHOD: _getDefaultIcon
#
# This method is invoked uto retrieve the name of the default icon
# image displayed in the icon button.
# ------------------------------------------------------------------
itcl::body iwidgets::Dateentry::_getDefaultIcon {} {
    if {[lsearch [image types] pixmap] != -1} {
      set _defaultIcon [image create pixmap -data {
	  /* XPM */
	  static char *calendar[] = {
	  /* width height num_colors chars_per_pixel */
	  "    25    20        6            1",
	  /* colors */
	  ". c #808080",
	  "# c #040404",
	  "a c #848484",
	  "b c #fc0404",
	  "c c #fcfcfc",
	  "d c #c0c0c0",
	  /* pixels */
	  "d##########d###########dd",
	  "d#ccccccccc##ccccccccca#d",
	  "##ccccccccc.#ccccccccc..#",
	  "##cccbbcccca#cccbbbccca.#",
	  "##cccbbcccc.#ccbbbbbcc..#",
	  "##cccbbccc####ccccbbcc..#",
	  "##cccbbcccca#ccccbbbcca.#",
	  "##cccbbcccc.#cccbbbccc..#",
	  "##cccbbcccca#ccbbbcccca.#",
	  "##cccbbbccc.#ccbbbbbcc..#",
	  "##ccccccccc.#ccccccccc..#",
	  "##ccccccccca#ccccccccca.#",
	  "##cc#####c#cd#c#####cc..#",
	  "##cccccccc####cccccccca.#",
	  "##cc#####cc.#cc#####cc..#",
	  "##ccccccccc.#ccccccccc..#",
	  "##ccccccccc.#ccccccccc..#",
	  "##..........#...........#",
	  "###..........#..........#",
	  "#########################"
	 };
	}]
    } else {
	set _defaultIcon [image create bitmap -data {
	    #define calendr2_width 25
	    #define calendr2_height 20
	    static char calendr2_bits[] = {
		0xfe,0xf7,0x7f,0xfe,0x02,0x18,0xc0,0xfe,0x03,
		0x18,0x80,0xff,0x63,0x10,0x47,0xff,0x43,0x98,
		0x8a,0xff,0x63,0x3c,0x4c,0xff,0x43,0x10,0x8a,
		0xff,0x63,0x18,0x47,0xff,0x23,0x90,0x81,0xff,
		0xe3,0x98,0x4e,0xff,0x03,0x10,0x80,0xff,0x03,
		0x10,0x40,0xff,0xf3,0xa5,0x8f,0xff,0x03,0x3c,
		0x40,0xff,0xf3,0x99,0x8f,0xff,0x03,0x10,0x40,
		0xff,0x03,0x18,0x80,0xff,0x57,0x55,0x55,0xff,
		0x57,0xb5,0xaa,0xff,0xff,0xff,0xff,0xff};
        }]
    }

    #
    # Since this image will only need to be created once, we redefine
    # this method to just return the image name for subsequent calls.
    #
    itcl::body ::iwidgets::Dateentry::_getDefaultIcon {} {
	return $_defaultIcon
    }

    return $_defaultIcon
}

# ------------------------------------------------------------------
# PROTECTED METHOD: _popup
#
# This method is invoked upon selection of the icon button.  It 
# creates a calendar widget within a toplevel popup, calculates 
# the position at which to display the calendar, performs a grab
# and displays the calendar.
# ------------------------------------------------------------------
itcl::body iwidgets::Dateentry::_popup {} {
    #
    # First, let's nullify the icon binding so that any another 
    # selections are ignored until were done with this one.  Next,
    # change the relief of the icon.
    #
    bind $itk_component(iconbutton) <Button-1> {}
    $itk_component(iconbutton) configure -relief sunken

    #
    # Create a withdrawn toplevel widget and remove the window 
    # decoration via override redirect.
    #
    itk_component add -private popup {
	toplevel $itk_interior.popup 
    } 
    $itk_component(popup) configure -borderwidth 2 -background black
    wm withdraw $itk_component(popup)
    wm overrideredirect $itk_component(popup) 1

    #
    # Add a binding to button 1 events in order to detect mouse
    # clicks off the calendar in which case we'll release the grab.
    # Also add a binding for Escape to always release.
    #
    bind $itk_component(popup) <1> [itcl::code $this _releaseGrabCheck %X %Y]
    bind $itk_component(popup) <KeyPress-Escape> [itcl::code $this _releaseGrab]

    #
    # Create the calendar widget and set its cursor properly.
    #
    itk_component add calendar {
	iwidgets::Calendar $itk_component(popup).calendar \
	    -command [itcl::code $this _getPopupDate %d] \
	    -int $itk_option(-int)
    } {
	usual
	keep -days -forwardimage -backwardimage -weekdaybackground \
	    -weekendbackground -outline -buttonforeground -selectcolor \
	    -selectthickness -titlefont -dayfont -datefont \
	    -currentdatefont -startday -width -height
    }
    grid $itk_component(calendar) -row 0 -column 0
    $itk_component(calendar) configure -cursor top_left_arrow

    #
    # The icon button will be used as the basis for the position of the
    # popup on the screen.  We'll always attempt to locate the popup
    # off the lower right corner of the button.  If that would put
    # the popup off the screen, then we'll put above the upper left.
    #
    set rootx [winfo rootx $itk_component(iconbutton)]
    set rooty [winfo rooty $itk_component(iconbutton)]
    set popupwidth [winfo reqwidth $itk_component(popup)]
    set popupheight [winfo reqheight $itk_component(popup)]

    set popupx [expr {$rootx + 3 + \
		    [winfo width $itk_component(iconbutton)]}]
    set popupy [expr {$rooty + 3 + \
		    [winfo height $itk_component(iconbutton)]}]

    if {(($popupx + $popupwidth) > [winfo screenwidth .]) || \
	    (($popupy + $popupheight) > [winfo screenheight .])} {
	set popupx [expr {$rootx - 3 - $popupwidth}]
	set popupy [expr {$rooty - 3 - $popupheight}]
    }
    
    #
    # Get the current date from the datefield widget and both
    # show and select it on the calendar.
    #
    # Added catch for bad dates. Calendar then shows current date.
    if [catch "$itk_component(calendar) show [get]" err] {
	$itk_component(calendar) show now
	$itk_component(calendar) select now
    } else {
	$itk_component(calendar) select [get]
    }
    #
    # Display the popup at the calculated position.
    #
    wm geometry $itk_component(popup) +$popupx+$popupy
    wm deiconify $itk_component(popup)
    tkwait visibility $itk_component(popup)

    #
    # Perform either a local or global grab based on the -grab option.
    #
    if {$itk_option(-grab) == "local"} {
	::grab $itk_component(popup)
    } else {
	::grab -global $itk_component(popup)
    }

    #
    # Make sure the widget is above all others and give it focus.
    #
    raise $itk_component(popup)
    focus $itk_component(calendar)
}

# ------------------------------------------------------------------
# PROTECTED METHOD: _popupGetDate
#
# This method is the callback for selection of a date on the 
# calendar.  It releases the grab and sets the date in the
# datefield widget.
# ------------------------------------------------------------------
itcl::body iwidgets::Dateentry::_getPopupDate {date} {
    _releaseGrab 
    show $date
}

# ------------------------------------------------------------------
# PROTECTED METHOD: _releaseGrabCheck rootx rooty
#
# This method handles mouse button 1 events.  If the selection
# occured within the bounds of the calendar, then return normally
# and let the calendar handle the event.  Otherwise, we'll drop
# the calendar and release the grab.
# ------------------------------------------------------------------
itcl::body iwidgets::Dateentry::_releaseGrabCheck {rootx rooty} {
    set calx [winfo rootx $itk_component(calendar)]
    set caly [winfo rooty $itk_component(calendar)]
    set calwidth [winfo reqwidth $itk_component(calendar)]
    set calheight [winfo reqheight $itk_component(calendar)]

    if {($rootx < $calx) || ($rootx > ($calx + $calwidth)) || \
	    ($rooty < $caly) || ($rooty > ($caly + $calheight))} {
	_releaseGrab
	return -code break
    }
}

# ------------------------------------------------------------------
# PROTECTED METHOD: _releaseGrab
#
# This method releases the grab, destroys the popup, changes the 
# relief of the button back to raised and reapplies the binding
# to the icon button that engages the popup action.
# ------------------------------------------------------------------
itcl::body iwidgets::Dateentry::_releaseGrab {} {
    ::grab release $itk_component(popup)
    $itk_component(iconbutton) configure -relief raised
    destroy $itk_component(popup) 
    bind $itk_component(iconbutton) <Button-1> [itcl::code $this _popup]
}