neingeist
/
arduinisten
Archived
1
0
Fork 0
You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
This repo is archived. You can view files and clone it, but cannot push or open issues/pull-requests.

984 lines
32 KiB
Plaintext

#
# Calendar
# ----------------------------------------------------------------------
# Implements a calendar widget for the selection of a date. It displays
# a single month at a time. Buttons exist on the top to change the
# month in effect turning th pages of a calendar. As a page is turned,
# the dates for the month are modified. Selection of a date visually
# marks that date. The selected value can be monitored via the
# -command option or just retrieved using the get method. Methods also
# exist to select a date and show a particular month. The option set
# allows the calendars appearance to take on many forms.
# ----------------------------------------------------------------------
# AUTHOR: Mark L. Ulferts E-mail: mulferts@austin.dsccc.com
#
# ACKNOWLEDGEMENTS: Michael McLennan E-mail: mmclennan@lucent.com
#
# This code is an [incr Tk] port of the calendar code shown in Michael
# J. McLennan's book "Effective Tcl" from Addison Wesley. Small
# modificiations were made to the logic here and there to make it a
# mega-widget and the command and option interface was expanded to make
# it even more configurable, but the underlying logic is the same.
#
# @(#) $Id: calendar.itk,v 1.7 2002/09/05 19:33:06 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.
# ======================================================================
#
# Usual options.
#
itk::usual Calendar {
keep -background -cursor
}
# ------------------------------------------------------------------
# CALENDAR
# ------------------------------------------------------------------
itcl::class iwidgets::Calendar {
inherit itk::Widget
constructor {args} {}
itk_option define -days days Days {Su Mo Tu We Th Fr Sa}
itk_option define -command command Command {}
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 -int int DateFormat no
public method get {{format "-string"}} ;# Returns the selected date
public method select {{date_ "now"}} ;# Selects date, moving select ring
public method show {{date_ "now"}} ;# Displays a specific date
protected method _drawtext {canvas_ day_ date_ now_ x0_ y0_ x1_ y1_}
private method _change {delta_}
private method _configureHandler {}
private method _redraw {}
private method _days {{wmax {}}}
private method _layout {time_}
private method _select {date_}
private method _selectEvent {date_}
private method _adjustday {day_}
private method _percentSubst {pattern_ string_ subst_}
private variable _time {}
private variable _selected {}
private variable _initialized 0
private variable _offset 0
private variable _format {}
}
#
# Provide a lowercased access method for the Calendar class.
#
proc ::iwidgets::calendar {pathName args} {
uplevel ::iwidgets::Calendar $pathName $args
}
#
# Use option database to override default resources of base classes.
#
option add *Calendar.width 200 widgetDefault
option add *Calendar.height 165 widgetDefault
# ------------------------------------------------------------------
# CONSTRUCTOR
# ------------------------------------------------------------------
itcl::body iwidgets::Calendar::constructor {args} {
#
# Create the canvas which displays each page of the calendar.
#
itk_component add page {
canvas $itk_interior.page
} {
keep -background -cursor -width -height
}
pack $itk_component(page) -expand yes -fill both
#
# Create the forward and backward buttons. Rather than pack
# them directly in the hull, we'll waittill later and make
# them canvas window items.
#
itk_component add backward {
button $itk_component(page).backward \
-command [itcl::code $this _change -1]
} {
keep -background -cursor
}
itk_component add forward {
button $itk_component(page).forward \
-command [itcl::code $this _change +1]
} {
keep -background -cursor
}
#
# Set the initial time to now.
#
set _time [clock seconds]
#
# Bind to the configure event which will be used to redraw
# the calendar and display the month.
#
bind $itk_component(page) <Configure> [itcl::code $this _configureHandler]
#
# Evaluate the option arguments.
#
eval itk_initialize $args
}
# ------------------------------------------------------------------
# OPTIONS
# ------------------------------------------------------------------
# ------------------------------------------------------------------
# OPTION: -int
#
# Added by Mark Alston 2001/10/21
#
# Allows for the use of dates in "international" format: YYYY-MM-DD.
# It must be a boolean value.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::int {
switch $itk_option(-int) {
1 - yes - true - on {
set itk_option(-int) yes
}
0 - no - false - off {
set itk_option(-int) no
}
default {
error "bad int option \"$itk_option(-int)\": should be boolean"
}
}
}
# ------------------------------------------------------------------
# OPTION: -command
#
# Sets the selection command for the calendar. When the user
# selects a date on the calendar, the date is substituted in
# place of "%d" in this command, and the command is executed.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::command {}
# ------------------------------------------------------------------
# OPTION: -days
#
# The days option takes a list of values to set the text used to display the
# days of the week header above the dates. The default value is
# {Su Mo Tu We Th Fr Sa}.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::days {
if {$_initialized} {
if {[$itk_component(page) find withtag days] != {}} {
$itk_component(page) delete days
_days
}
}
}
# ------------------------------------------------------------------
# OPTION: -backwardimage
#
# Specifies a image to be displayed on the backwards calendar
# button. If none is specified, a default is provided.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::backwardimage {
#
# If no image is given, then we'll use the default image.
#
if {$itk_option(-backwardimage) == {}} {
#
# If the default image hasn't yet been created, then we
# need to create it.
#
if {[lsearch [image names] $this-backward] == -1} {
image create bitmap $this-backward \
-foreground $itk_option(-buttonforeground) -data {
#define back_width 16
#define back_height 16
static unsigned char back_bits[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xc0, 0x30,
0xe0, 0x38, 0xf0, 0x3c, 0xf8, 0x3e, 0xfc, 0x3f,
0xfc, 0x3f, 0xf8, 0x3e, 0xf0, 0x3c, 0xe0, 0x38,
0xc0, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
}
}
#
# Configure the button to use the default image.
#
$itk_component(backward) configure -image $this-backward
#
# Else, an image has been specified. First, we'll need to make sure
# the image really exists before configuring the button to use it.
# If it doesn't generate an error.
#
} else {
if {[lsearch [image names] $itk_option(-backwardimage)] != -1} {
$itk_component(backward) configure \
-image $itk_option(-backwardimage)
} else {
error "bad image name \"$itk_option(-backwardimage)\":\
image does not exist"
}
#
# If we previously created a default image, we'll just remove it.
#
if {[lsearch [image names] $this-backward] != -1} {
image delete $this-backward
}
}
}
# ------------------------------------------------------------------
# OPTION: -forwardimage
#
# Specifies a image to be displayed on the forwards calendar
# button. If none is specified, a default is provided.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::forwardimage {
#
# If no image is given, then we'll use the default image.
#
if {$itk_option(-forwardimage) == {}} {
#
# If the default image hasn't yet been created, then we
# need to create it.
#
if {[lsearch [image names] $this-forward] == -1} {
image create bitmap $this-forward \
-foreground $itk_option(-buttonforeground) -data {
#define fwd_width 16
#define fwd_height 16
static unsigned char fwd_bits[] = {
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0c, 0x03,
0x1c, 0x07, 0x3c, 0x0f, 0x7c, 0x1f, 0xfc, 0x3f,
0xfc, 0x3f, 0x7c, 0x1f, 0x3c, 0x0f, 0x1c, 0x07,
0x0c, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
}
}
#
# Configure the button to use the default image.
#
$itk_component(forward) configure -image $this-forward
#
# Else, an image has been specified. First, we'll need to make sure
# the image really exists before configuring the button to use it.
# If it doesn't generate an error.
#
} else {
if {[lsearch [image names] $itk_option(-forwardimage)] != -1} {
$itk_component(forward) configure \
-image $itk_option(-forwardimage)
} else {
error "bad image name \"$itk_option(-forwardimage)\":\
image does not exist"
}
#
# If we previously created a default image, we'll just remove it.
#
if {[lsearch [image names] $this-forward] != -1} {
image delete $this-forward
}
}
}
# ------------------------------------------------------------------
# OPTION: -weekdaybackground
#
# Specifies the background for the weekdays which allows it to
# be visually distinguished from the weekend.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::weekdaybackground {
if {$_initialized} {
$itk_component(page) itemconfigure weekday \
-fill $itk_option(-weekdaybackground)
}
}
# ------------------------------------------------------------------
# OPTION: -weekendbackground
#
# Specifies the background for the weekdays which allows it to
# be visually distinguished from the weekdays.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::weekendbackground {
if {$_initialized} {
$itk_component(page) itemconfigure weekend \
-fill $itk_option(-weekendbackground)
}
}
# ------------------------------------------------------------------
# OPTION: -foreground
#
# Specifies the foreground color for the textual items, buttons,
# and divider on the calendar.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::foreground {
if {$_initialized} {
$itk_component(page) itemconfigure text \
-fill $itk_option(-foreground)
$itk_component(page) itemconfigure line \
-fill $itk_option(-foreground)
}
}
# ------------------------------------------------------------------
# OPTION: -outline
#
# Specifies the outline color used to surround the date text.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::outline {
if {$_initialized} {
$itk_component(page) itemconfigure square \
-outline $itk_option(-outline)
}
}
# ------------------------------------------------------------------
# OPTION: -buttonforeground
#
# Specifies the foreground color of the forward and backward buttons.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::buttonforeground {
if {$_initialized} {
if {$itk_option(-forwardimage) == {}} {
if {[lsearch [image names] $this-forward] != -1} {
$this-forward configure \
-foreground $itk_option(-buttonforeground)
}
} else {
$itk_component(forward) configure \
-foreground $itk_option(-buttonforeground)
}
if {$itk_option(-backwardimage) == {}} {
if {[lsearch [image names] $this-backward] != -1} {
$this-backward configure \
-foreground $itk_option(-buttonforeground)
}
} else {
$itk_component(-backward) configure \
-foreground $itk_option(-buttonforeground)
}
}
}
# ------------------------------------------------------------------
# OPTION: -selectcolor
#
# Specifies the color of the ring displayed that distinguishes the
# currently selected date.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::selectcolor {
if {$_initialized} {
$itk_component(page) itemconfigure $_selected-sensor \
-outline $itk_option(-selectcolor)
}
}
# ------------------------------------------------------------------
# OPTION: -selectthickness
#
# Specifies the thickness of the ring displayed that distinguishes
# the currently selected date.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::selectthickness {
if {$_initialized} {
$itk_component(page) itemconfigure $_selected-sensor \
-width $itk_option(-selectthickness)
}
}
# ------------------------------------------------------------------
# OPTION: -titlefont
#
# Specifies the font used for the title text that consists of the
# month and year.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::titlefont {
if {$_initialized} {
$itk_component(page) itemconfigure title \
-font $itk_option(-titlefont)
}
}
# ------------------------------------------------------------------
# OPTION: -datefont
#
# Specifies the font used for the date text that consists of the
# day of the month.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::datefont {
if {$_initialized} {
$itk_component(page) itemconfigure date \
-font $itk_option(-datefont)
}
}
# ------------------------------------------------------------------
# OPTION: -currentdatefont
#
# Specifies the font used for the current date text.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::currentdatefont {
if {$_initialized} {
$itk_component(page) itemconfigure now \
-font $itk_option(-currentdatefont)
}
}
# ------------------------------------------------------------------
# OPTION: -dayfont
#
# Specifies the font used for the day of the week text.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::dayfont {
if {$_initialized} {
$itk_component(page) itemconfigure days \
-font $itk_option(-dayfont)
}
}
# ------------------------------------------------------------------
# OPTION: -startday
#
# Specifies the starting day for the week. The value must be a day of the
# week: sunday, monday, tuesday, wednesday, thursday, friday, or
# saturday. The default is sunday.
# ------------------------------------------------------------------
itcl::configbody iwidgets::Calendar::startday {
set day [string tolower $itk_option(-startday)]
switch $day {
sunday {set _offset 0}
monday {set _offset 1}
tuesday {set _offset 2}
wednesday {set _offset 3}
thursday {set _offset 4}
friday {set _offset 5}
saturday {set _offset 6}
default {
error "bad startday option \"$itk_option(-startday)\":\
should be sunday, monday, tuesday, wednesday,\
thursday, friday, or saturday"
}
}
if {$_initialized} {
$itk_component(page) delete all-page
_redraw
}
}
# ------------------------------------------------------------------
# METHODS
# ------------------------------------------------------------------
# ------------------------------------------------------------------
# PUBLIC METHOD: get ?format?
#
# Returns the currently selected date in one of two formats, string
# or as an integer clock value using the -string and -clicks
# options respectively. The default is by string. Reference the
# clock command for more information on obtaining dates and their
# formats.
# ------------------------------------------------------------------
itcl::body iwidgets::Calendar::get {{format "-string"}} {
switch -- $format {
"-string" {
return $_selected
}
"-clicks" {
return [clock scan $_selected]
}
default {
error "bad format option \"$format\":\
should be -string or -clicks"
}
}
}
# ------------------------------------------------------------------
# PUBLIC METHOD: select date_
#
# Changes the currently selected date to the value specified.
# ------------------------------------------------------------------
itcl::body iwidgets::Calendar::select {{date_ "now"}} {
if {$date_ == "now"} {
set time [clock seconds]
} else {
if {[catch {clock format $date_}] == 0} {
set time $date_
} elseif {[catch {set time [clock scan $date_]}] != 0} {
error "bad date: \"$date_\", must be a valid date string, clock clicks value or the keyword now"
}
}
switch $itk_option(-int) {
yes { set _format "%Y-%m-%d" }
no { set _format "%m/%d/%Y" }
}
_select [clock format $time -format "$_format"]
}
# ------------------------------------------------------------------
# PUBLIC METHOD: show date_
#
# Changes the currently display month to be that of the specified
# date.
# ------------------------------------------------------------------
itcl::body iwidgets::Calendar::show {{date_ "now"}} {
if {$date_ == "now"} {
set _time [clock seconds]
} else {
if {[catch {clock format $date_}] == 0} {
set _time $date_
} elseif {[catch {set _time [clock scan $date_]}] != 0} {
error "bad date: \"$date_\", must be a valid date string, clock clicks value or the keyword now"
}
}
$itk_component(page) delete all-page
_redraw
}
# ------------------------------------------------------------------
# PROTECTED METHOD: _drawtext canvas_ day_ date_ now_
# x0_ y0_ x1_ y1_
#
# Draws the text in the date square. The method is protected such that
# it can be overridden in derived classes that may wish to add their
# own unique text. The method receives the day to draw along with
# the coordinates of the square.
# ------------------------------------------------------------------
itcl::body iwidgets::Calendar::_drawtext {canvas_ day_ date_ now_ x0_ y0_ x1_ y1_} {
set item [$canvas_ create text \
[expr {(($x1_ - $x0_) / 2) + $x0_}] \
[expr {(($y1_ -$y0_) / 2) + $y0_ + 1}] \
-anchor center -text "$day_" \
-fill $itk_option(-foreground)]
if {$date_ == $now_} {
$canvas_ itemconfigure $item \
-font $itk_option(-currentdatefont) \
-tags [list all-page date text now]
} else {
$canvas_ itemconfigure $item \
-font $itk_option(-datefont) \
-tags [list all-page date text]
}
}
# ------------------------------------------------------------------
# PRIVATE METHOD: _configureHandler
#
# Processes a configure event received on the canvas. The method
# deletes all the current canvas items and forces a redraw.
# ------------------------------------------------------------------
itcl::body iwidgets::Calendar::_configureHandler {} {
set _initialized 1
$itk_component(page) delete all
_redraw
}
# ------------------------------------------------------------------
# PRIVATE METHOD: _change delta_
#
# Changes the current month displayed in the calendar, moving
# forward or backward by <delta_> months where <delta_> is +/-
# some number.
# ------------------------------------------------------------------
itcl::body iwidgets::Calendar::_change {delta_} {
set dir [expr {($delta_ > 0) ? 1 : -1}]
set month [clock format $_time -format "%m"]
set month [string trimleft $month 0]
set year [clock format $_time -format "%Y"]
for {set i 0} {$i < abs($delta_)} {incr i} {
incr month $dir
if {$month < 1} {
set month 12
incr year -1
} elseif {$month > 12} {
set month 1
incr year 1
}
}
if {[catch {set _time [clock scan "$month/1/$year"]}]} {
bell
} else {
_redraw
}
}
# ------------------------------------------------------------------
# PRIVATE METHOD: _redraw
#
# Redraws the calendar. This method is invoked whenever the
# calendar changes size or we need to effect a change such as draw
# it with a new month.
# ------------------------------------------------------------------
itcl::body iwidgets::Calendar::_redraw {} {
#
# Set the format based on the option -int
#
switch $itk_option(-int) {
yes { set _format "%Y-%m-%d" }
no { set _format "%m/%d/%Y" }
}
#
# Remove all the items that typically change per redraw request
# such as the title and dates. Also, get the maximum width and
# height of the page.
#
$itk_component(page) delete all-page
set wmax [winfo width $itk_component(page)]
set hmax [winfo height $itk_component(page)]
#
# If we haven't yet created the forward and backwards buttons,
# then dot it; otherwise, skip it.
#
if {[$itk_component(page) find withtag button] == {}} {
$itk_component(page) create window 3 3 -anchor nw \
-window $itk_component(backward) -tags button
$itk_component(page) create window [expr {$wmax-3}] 3 -anchor ne \
-window $itk_component(forward) -tags button
}
#
# Create the title centered between the buttons.
#
foreach {x0 y0 x1 y1} [$itk_component(page) bbox button] {
set x [expr {(($x1-$x0)/2)+$x0}]
set y [expr {(($y1-$y0)/2)+$y0}]
}
set title [clock format $_time -format "%B %Y"]
$itk_component(page) create text $x $y -anchor center \
-text $title -font $itk_option(-titlefont) \
-fill $itk_option(-foreground) \
-tags [list title text all-page]
#
# Add the days of the week labels if they haven't yet been created.
#
if {[$itk_component(page) find withtag days] == {}} {
_days $wmax
}
#
# Add a line between the calendar header and the dates if needed.
#
set bottom [expr {[lindex [$itk_component(page) bbox all] 3] + 3}]
if {[$itk_component(page) find withtag line] == {}} {
$itk_component(page) create line 0 $bottom $wmax $bottom \
-width 2 -tags line
}
incr bottom 3
#
# Get the layout for the time value and create the date squares.
# This includes the surrounding date rectangle, the date text,
# and the sensor. Bind selection to the sensor.
#
set current ""
set now [clock format [clock seconds] -format "$_format"]
set layout [_layout $_time]
set weeks [expr {[lindex $layout end] + 1}]
foreach {day date kind dcol wrow} $layout {
set x0 [expr {$dcol*($wmax-7)/7+3}]
set y0 [expr {$wrow*($hmax-$bottom-4)/$weeks+$bottom}]
set x1 [expr {($dcol+1)*($wmax-7)/7+3}]
set y1 [expr {($wrow+1)*($hmax-$bottom-4)/$weeks+$bottom}]
if {$date == $_selected} {
set current $date
}
#
# Create the rectangle that surrounds the date and configure
# its background based on the wheather it is a weekday or
# a weekend.
#
set item [$itk_component(page) create rectangle $x0 $y0 $x1 $y1 \
-outline $itk_option(-outline)]
if {$kind == "weekend"} {
$itk_component(page) itemconfigure $item \
-fill $itk_option(-weekendbackground) \
-tags [list all-page square weekend]
} else {
$itk_component(page) itemconfigure $item \
-fill $itk_option(-weekdaybackground) \
-tags [list all-page square weekday]
}
#
# Create the date text and configure its font based on the
# wheather or not it is the current date.
#
_drawtext $itk_component(page) $day $date $now $x0 $y0 $x1 $y1
#
# Create a sensor area to detect selections. Bind the
# sensor and pass the date to the bind script.
#
$itk_component(page) create rectangle $x0 $y0 $x1 $y1 \
-outline "" -fill "" \
-tags [list $date-sensor all-sensor all-page]
$itk_component(page) bind $date-sensor <ButtonPress-1> \
[itcl::code $this _selectEvent $date]
}
#
# Highlight the selected date if it is on this page.
#
if {$current != ""} {
$itk_component(page) itemconfigure $current-sensor \
-outline $itk_option(-selectcolor) \
-width $itk_option(-selectthickness)
$itk_component(page) raise $current-sensor
} elseif {$_selected == ""} {
set date [clock format $_time -format "$_format"]
_select $date
}
}
# ------------------------------------------------------------------
# PRIVATE METHOD: _days
#
# Used to rewite the days of the week label just below the month
# title string. The days are given in the -days option.
# ------------------------------------------------------------------
itcl::body iwidgets::Calendar::_days {{wmax {}}} {
if {$wmax == {}} {
set wmax [winfo width $itk_component(page)]
}
set col 0
set bottom [expr {[lindex [$itk_component(page) bbox title buttons] 3] + 7}]
foreach dayoweek $itk_option(-days) {
set x0 [expr {$col*($wmax/7)}]
set x1 [expr {($col+1)*($wmax/7)}]
$itk_component(page) create text \
[expr {(($x1 - $x0) / 2) + $x0}] $bottom \
-anchor n -text "$dayoweek" \
-fill $itk_option(-foreground) \
-font $itk_option(-dayfont) \
-tags [list days text]
incr col
}
}
# ------------------------------------------------------------------
# PRIVATE METHOD: _layout time_
#
# Used whenever the calendar is redrawn. Finds the month containing
# a <time_> in seconds, and returns a list for all of the days in
# that month. The list looks like this:
#
# {day1 date1 kind1 c1 r1 day2 date2 kind2 c2 r2 ...}
#
# where dayN is a day number like 1,2,3,..., dateN is the date for
# dayN, kindN is the day type of weekday or weekend, and cN,rN
# are the column/row indices for the square containing that date.
# ------------------------------------------------------------------
itcl::body iwidgets::Calendar::_layout {time_} {
switch $itk_option(-int) {
yes { set _format "%Y-%m-%d" }
no { set _format "%m/%d/%Y" }
}
set month [clock format $time_ -format "%m"]
set year [clock format $time_ -format "%Y"]
foreach lastday {31 30 29 28} {
if {[catch {clock scan "$month/$lastday/$year"}] == 0} {
break
}
}
set seconds [clock scan "$month/1/$year"]
set firstday [_adjustday [clock format $seconds -format %w]]
set weeks [expr {ceil(double($lastday+$firstday)/7)}]
set rlist ""
for {set day 1} {$day <= $lastday} {incr day} {
set seconds [clock scan "$month/$day/$year"]
set date [clock format $seconds -format "$_format"]
set dayoweek [clock format $seconds -format %w]
if {$dayoweek == 0 || $dayoweek == 6} {
set kind "weekend"
} else {
set kind "weekday"
}
set daycol [_adjustday $dayoweek]
set weekrow [expr {($firstday+$day-1)/7}]
lappend rlist $day $date $kind $daycol $weekrow
}
return $rlist
}
# ------------------------------------------------------------------
# PRIVATE METHOD: _adjustday day_
#
# Modifies the day to be in accordance with the startday option.
# ------------------------------------------------------------------
itcl::body iwidgets::Calendar::_adjustday {day_} {
set retday [expr {$day_ - $_offset}]
if {$retday < 0} {
set retday [expr {$retday + 7}]
}
return $retday
}
# ------------------------------------------------------------------
# PRIVATE METHOD: _select date_
#
# Selects the current <date_> on the calendar. Highlights the date
# on the calendar, and executes the command associated with the
# calendar, with the selected date substituted in place of "%d".
# ------------------------------------------------------------------
itcl::body iwidgets::Calendar::_select {date_} {
switch $itk_option(-int) {
yes { set _format "%Y-%m-%d" }
no { set _format "%m/%d/%Y" }
}
set time [clock scan $date_]
set date [clock format $time -format "$_format"]
set _selected $date
set current [clock format $_time -format "%m %Y"]
set selected [clock format $time -format "%m %Y"]
if {$current == $selected} {
$itk_component(page) itemconfigure all-sensor \
-outline "" -width 1
$itk_component(page) itemconfigure $date-sensor \
-outline $itk_option(-selectcolor) \
-width $itk_option(-selectthickness)
$itk_component(page) raise $date-sensor
} else {
set _time $time
_redraw
}
}
# ------------------------------------------------------------------
# PRIVATE METHOD: _selectEvent date_
#
# Selects the current <date_> on the calendar. Highlights the date
# on the calendar, and executes the command associated with the
# calendar, with the selected date substituted in place of "%d".
# ------------------------------------------------------------------
itcl::body iwidgets::Calendar::_selectEvent {date_} {
_select $date_
if {[string trim $itk_option(-command)] != ""} {
set cmd $itk_option(-command)
set cmd [_percentSubst %d $cmd [get]]
uplevel #0 $cmd
}
}
# ------------------------------------------------------------------
# PRIVATE METHOD: _percentSubst pattern_ string_ subst_
#
# This command is a "safe" version of regsub, for substituting
# each occurance of <%pattern_> in <string_> with <subst_>. The
# usual Tcl "regsub" command does the same thing, but also
# converts characters like "&" and "\0", "\1", etc. that may
# be present in the <subst_> string.
#
# Returns <string_> with <subst_> substituted in place of each
# <%pattern_>.
# ------------------------------------------------------------------
itcl::body iwidgets::Calendar::_percentSubst {pattern_ string_ subst_} {
if {![string match %* $pattern_]} {
error "bad pattern \"$pattern_\": should be %something"
}
set rval ""
while {[regexp "(.*)${pattern_}(.*)" $string_ all head tail]} {
set rval "$subst_$tail$rval"
set string_ $head
}
set rval "$string_$rval"
}