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[/] [or1k_old/] [tags/] [start/] [insight/] [itcl/] [iwidgets3.0.0/] [generic/] [dateentry.itk] - Rev 1765
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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 1.1.1.1 2002-01-16 10:24:50 markom 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.
# ======================================================================
#
# Usual options.
#
itk::usual Dateentry {
keep -background -borderwidth -currentdatefont -cursor \
-datefont -dayfont -foreground -highlightcolor \
-highlightthickness -labelfont -textbackground -textfont \
-titlefont
}
# ------------------------------------------------------------------
# DATEENTRY
# ------------------------------------------------------------------
class iwidgets::Dateentry {
inherit iwidgets::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
# ------------------------------------------------------------------
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 $args
}
# ------------------------------------------------------------------
# OPTIONS
# ------------------------------------------------------------------
# ------------------------------------------------------------------
# OPTION: -icon
#
# Specifies the calendar icon image to be used in the date.
# Should one not be provided, then a default pixmap will be used
# if possible, bitmap otherwise.
# ------------------------------------------------------------------
configbody iwidgets::Dateentry::icon {
if {$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.
# ------------------------------------------------------------------
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.
# ------------------------------------------------------------------
configbody iwidgets::Dateentry::state {
switch -- $itk_option(-state) {
normal {
bind $itk_component(iconbutton) <Button-1> [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.
# ------------------------------------------------------------------
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.
#
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.
# ------------------------------------------------------------------
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> [code $this _releaseGrabCheck %X %Y]
bind $itk_component(popup) <KeyPress-Escape> [code $this _releaseGrab]
#
# Create the calendar widget and set its cursor properly.
#
itk_component add calendar {
iwidgets::Calendar $itk_component(popup).calendar \
-command [code $this _getPopupDate %d]
} {
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 {([expr $popupx + $popupwidth] > [winfo screenwidth .]) || \
([expr $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.
#
$itk_component(calendar) show [get]
$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.
# ------------------------------------------------------------------
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.
# ------------------------------------------------------------------
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 > [expr $calx + $calwidth]) || \
($rooty < $caly) || ($rooty > [expr $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.
# ------------------------------------------------------------------
body iwidgets::Dateentry::_releaseGrab {} {
grab release $itk_component(popup)
$itk_component(iconbutton) configure -relief raised
destroy $itk_component(popup)
unset itk_component(popup)
bind $itk_component(iconbutton) <Button-1> [code $this _popup]
}
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