/usr/share/tcltk/iwidgets4.1.0/scripts/watch.itk is in iwidgets4 4.1.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# Watch
# ----------------------------------------------------------------------
# Implements a a clock widget in a canvas.
#
# ----------------------------------------------------------------------
# AUTHOR: John A. Tucker EMAIL: jatucker@spd.dsccc.com
#
# ======================================================================
# 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.
# ======================================================================
#
# Default resources.
#
option add *Watch.labelFont \
-*-Courier-Medium-R-Normal--*-120-*-*-*-*-*-* widgetDefault
#
# Usual options.
#
itk::usual Watch {
keep -background -cursor -labelfont -foreground
}
itcl::class iwidgets::Watch {
inherit itk::Widget
itk_option define -hourradius hourRadius Radius .50
itk_option define -hourcolor hourColor Color red
itk_option define -minuteradius minuteRadius Radius .80
itk_option define -minutecolor minuteColor Color yellow
itk_option define -pivotradius pivotRadius Radius .10
itk_option define -pivotcolor pivotColor Color white
itk_option define -secondradius secondRadius Radius .90
itk_option define -secondcolor secondColor Color black
itk_option define -clockcolor clockColor Color white
itk_option define -clockstipple clockStipple ClockStipple {}
itk_option define -state state State normal
itk_option define -showampm showAmPm ShowAmPm true
itk_option define -tickcolor tickColor Color black
constructor {args} {}
destructor {}
#
# Public methods
#
public {
method get {{format "-string"}}
method show {{time "now"}}
method watch {args}
}
#
# Private methods
#
private {
method _handMotionCB {tag x y}
method _drawHand {tag}
method _handReleaseCB {tag x y}
method _displayClock {{when "later"}}
variable _interior
variable _radius
variable _theta
variable _extent
variable _reposition "" ;# non-null => _displayClock pending
variable _timeVar
variable _x0 1
variable _y0 1
common _ampmVar
common PI [expr {2*asin(1.0)}]
}
}
#
# Provide a lowercased access method for the Watch class.
#
proc ::iwidgets::watch {pathName args} {
uplevel ::iwidgets::Watch $pathName $args
}
#
# Use option database to override default resources of base classes.
#
option add *Watch.width 155 widgetDefault
option add *Watch.height 175 widgetDefault
# -----------------------------------------------------------------------------
# CONSTRUCTOR
# -----------------------------------------------------------------------------
itcl::body iwidgets::Watch::constructor { args } {
#
# Add back to the hull width and height options and make the
# borderwidth zero since we don't need it.
#
set _interior $itk_interior
itk_option add hull.width hull.height
component hull configure -borderwidth 0
grid propagate $itk_component(hull) no
set _ampmVar($this) "AM"
set _radius(outer) 1
set _radius(hour) 1
set _radius(minute) 1
set _radius(second) 1
set _theta(hour) 30
set _theta(minute) 6
set _theta(second) 6
set _extent(hour) 14
set _extent(minute) 14
set _extent(second) 2
set _timeVar(hour) 12
set _timeVar(minute) 0
set _timeVar(second) 0
#
# Create the frame in which the "AM" and "PM" radiobuttons will be drawn
#
itk_component add frame {
frame $itk_interior.frame
}
#
# Create the canvas in which the clock will be drawn
#
itk_component add canvas {
canvas $itk_interior.canvas
}
bind $itk_component(canvas) <Map> +[itcl::code $this _displayClock]
bind $itk_component(canvas) <Configure> +[itcl::code $this _displayClock]
#
# Create the "AM" and "PM" radiobuttons to be drawn in the canvas
#
itk_component add am {
radiobutton $itk_component(frame).am \
-text "AM" \
-value "AM" \
-variable [itcl::scope _ampmVar($this)]
} {
usual
rename -font -labelfont labelFont Font
}
itk_component add pm {
radiobutton $itk_component(frame).pm \
-text "PM" \
-value "PM" \
-variable [itcl::scope _ampmVar($this)]
} {
usual
rename -font -labelfont labelFont Font
}
#
# Create the canvas item for displaying the main oval which encapsulates
# the entire clock.
#
watch create oval 0 0 2 2 -width 5 -tags clock
#
# Create the canvas items for displaying the 60 ticks marks around the
# inner perimeter of the watch.
#
set extent 3
for {set i 0} {$i < 60} {incr i} {
set start [expr {$i*6-1}]
set tag [expr {[expr {$i%5}] == 0 ? "big" : "little"}]
watch create arc 0 0 0 0 \
-style arc \
-extent $extent \
-start $start \
-tags "tick$i tick $tag"
}
#
# Create the canvas items for displaying the hour, minute, and second hands
# of the watch. Add bindings to allow the mouse to move and set the
# clock hands.
#
watch create arc 1 1 1 1 -extent 30 -tags minute
watch create arc 1 1 1 1 -extent 30 -tags hour
watch create arc 1 1 1 1 -tags second
#
# Create the canvas item for displaying the center of the watch in which
# the hour, minute, and second hands will pivot.
#
watch create oval 0 0 1 1 -width 5 -fill black -tags pivot
#
# Position the "AM/PM" button frame and watch canvas.
#
grid $itk_component(frame) -row 0 -column 0 -sticky new
grid $itk_component(canvas) -row 1 -column 0 -sticky nsew
grid rowconfigure $itk_interior 0 -weight 0
grid rowconfigure $itk_interior 1 -weight 1
grid columnconfigure $itk_interior 0 -weight 1
eval itk_initialize $args
}
# -----------------------------------------------------------------------------
# DESTURCTOR
# -----------------------------------------------------------------------------
itcl::body iwidgets::Watch::destructor {} {
if {$_reposition != ""} {
after cancel $_reposition
}
}
# -----------------------------------------------------------------------------
# METHODS
# -----------------------------------------------------------------------------
# -----------------------------------------------------------------------------
# METHOD: _handReleaseCB tag x y
#
# -----------------------------------------------------------------------------
itcl::body iwidgets::Watch::_handReleaseCB {tag x y} {
set atanab [expr {atan2(double($y-$_y0),double($x-$_x0))*(180/$PI)}]
set degrees [expr {$atanab > 0 ? [expr {360-$atanab}] : abs($atanab)}]
set ticks [expr {round($degrees/$_theta($tag))}]
set _timeVar($tag) [expr {((450-$ticks*$_theta($tag))%360)/$_theta($tag)}]
if {$tag == "hour" && $_timeVar(hour) == 0} {
set _timeVar($tag) 12
}
_drawHand $tag
}
# -----------------------------------------------------------------------------
# PROTECTED METHOD: _handMotionCB tag x y
#
# -----------------------------------------------------------------------------
itcl::body iwidgets::Watch::_handMotionCB {tag x y} {
if {$x == $_x0 || $y == $_y0} {
return
}
set a [expr {$y-$_y0}]
set b [expr {$x-$_x0}]
set c [expr {hypot($a,$b)}]
set atanab [expr {atan2(double($a),double($b))*(180/$PI)}]
set degrees [expr {$atanab > 0 ? [expr 360-$atanab] : abs($atanab)}]
set x2 [expr {$_x0+$_radius($tag)*($b/double($c))}]
set y2 [expr {$_y0+$_radius($tag)*($a/double($c))}]
watch coords $tag \
[expr {$x2-$_radius($tag)}] \
[expr {$y2-$_radius($tag)}] \
[expr {$x2+$_radius($tag)}] \
[expr {$y2+$_radius($tag)}]
set start [expr {$degrees-180-($_extent($tag)/2)}]
watch itemconfigure $tag -start $start -extent $_extent($tag)
}
# -----------------------------------------------------------------------------
# PROTECTED METHOD: get ?format?
#
# -----------------------------------------------------------------------------
itcl::body iwidgets::Watch::get {{format "-string"}} {
set timestr [format "%02d:%02d:%02d %s" \
$_timeVar(hour) $_timeVar(minute) \
$_timeVar(second) $_ampmVar($this)]
switch -- $format {
"-string" {
return $timestr
}
"-clicks" {
return [clock scan $timestr]
}
default {
error "bad format option \"$format\":\
should be -string or -clicks"
}
}
}
# -----------------------------------------------------------------------------
# METHOD: watch ?args?
#
# Evaluates the specified args against the canvas component.
# -----------------------------------------------------------------------------
itcl::body iwidgets::Watch::watch {args} {
return [eval $itk_component(canvas) $args]
}
# -----------------------------------------------------------------------------
# METHOD: _drawHand tag
#
# -----------------------------------------------------------------------------
itcl::body iwidgets::Watch::_drawHand {tag} {
set degrees [expr {abs(450-($_timeVar($tag)*$_theta($tag)))%360}]
set radians [expr {$degrees*($PI/180)}]
set x [expr {$_x0+$_radius($tag)*cos($radians)}]
set y [expr {$_y0+$_radius($tag)*sin($radians)*(-1)}]
watch coords $tag \
[expr {$x-$_radius($tag)}] \
[expr {$y-$_radius($tag)}] \
[expr {$x+$_radius($tag)}] \
[expr {$y+$_radius($tag)}]
set start [expr {$degrees-180-($_extent($tag)/2)}]
watch itemconfigure $tag -start $start
}
# ------------------------------------------------------------------
# PUBLIC METHOD: show time
#
# Changes the currently displayed time to be that of the time
# argument. The time may be specified either as a string or an
# integer clock value. Reference the clock command for more
# information on obtaining times and their formats.
# ------------------------------------------------------------------
itcl::body iwidgets::Watch::show {{time "now"}} {
if {$time == "now"} {
set seconds [clock seconds]
} elseif {![catch {clock format $time}]} {
set seconds $time
} elseif {[catch {set seconds [clock scan $time]}]} {
error "bad time: \"$time\", must be a valid time\
string, clock clicks value or the keyword now"
}
set timestring [clock format $seconds -format "%I %M %S %p"]
set _timeVar(hour) [expr int(1[lindex $timestring 0] - 100)]
set _timeVar(minute) [expr int(1[lindex $timestring 1] - 100)]
set _timeVar(second) [expr int(1[lindex $timestring 2] - 100)]
set _ampmVar($this) [lindex $timestring 3]
_drawHand hour
_drawHand minute
_drawHand second
}
# -----------------------------------------------------------------------------
# PROTECTED METHOD: _displayClock ?when?
#
# Places the hour, minute, and second dials in the canvas. If "when" is "now",
# the change is applied immediately. If it is "later" or it is not specified,
# then the change is applied later, when the application is idle.
# -----------------------------------------------------------------------------
itcl::body iwidgets::Watch::_displayClock {{when "later"}} {
if {$when == "later"} {
if {$_reposition == ""} {
set _reposition [after idle [itcl::code $this _displayClock now]]
}
return
}
#
# Compute the center coordinates for the clock based on the
# with and height of the canvas.
#
set width [winfo width $itk_component(canvas)]
set height [winfo height $itk_component(canvas)]
set _x0 [expr {$width/2}]
set _y0 [expr {$height/2}]
#
# Set the radius of the watch, pivot, hour, minute and second items.
#
set _radius(outer) [expr {$_x0 < $_y0 ? $_x0 : $_y0}]
set _radius(pivot) [expr {$itk_option(-pivotradius)*$_radius(outer)}]
set _radius(hour) [expr {$itk_option(-hourradius)*$_radius(outer)}]
set _radius(minute) [expr {$itk_option(-minuteradius)*$_radius(outer)}]
set _radius(second) [expr {$itk_option(-secondradius)*$_radius(outer)}]
set outerWidth [watch itemcget clock -width]
#
# Set the coordinates of the clock item
#
set x1Outer $outerWidth
set y1Outer $outerWidth
set x2Outer [expr {$width-$outerWidth}]
set y2Outer [expr {$height-$outerWidth}]
watch coords clock $x1Outer $y1Outer $x2Outer $y2Outer
#
# Set the coordinates of the tick items
#
set offset [expr {$outerWidth*2}]
set x1Tick [expr {$x1Outer+$offset}]
set y1Tick [expr {$y1Outer+$offset}]
set x2Tick [expr {$x2Outer-$offset}]
set y2Tick [expr {$y2Outer-$offset}]
for {set i 0} {$i < 60} {incr i} {
watch coords tick$i $x1Tick $y1Tick $x2Tick $y2Tick
}
set maxTickWidth [expr {$_radius(outer)-$_radius(second)+1}]
set minTickWidth [expr {round($maxTickWidth/2)}]
watch itemconfigure big -width $maxTickWidth
watch itemconfigure little -width [expr {round($maxTickWidth/2)}]
#
# Set the coordinates of the pivot item
#
set x1Center [expr {$_x0-$_radius(pivot)}]
set y1Center [expr {$_y0-$_radius(pivot)}]
set x2Center [expr {$_x0+$_radius(pivot)}]
set y2Center [expr {$_y0+$_radius(pivot)}]
watch coords pivot $x1Center $y1Center $x2Center $y2Center
#
# Set the coordinates of the hour, minute, and second dial items
#
watch itemconfigure hour -extent $_extent(hour)
_drawHand hour
watch itemconfigure minute -extent $_extent(minute)
_drawHand minute
watch itemconfigure second -extent $_extent(second)
_drawHand second
set _reposition ""
}
# -----------------------------------------------------------------------------
# OPTIONS
# -----------------------------------------------------------------------------
# ------------------------------------------------------------------
# OPTION: state
#
# Configure the editable state of the widget. Valid values are
# normal and disabled. In a disabled state, the hands of the
# watch are not selectabled.
# ------------------------------------------------------------------
itcl::configbody ::iwidgets::Watch::state {
if {$itk_option(-state) == "normal"} {
watch bind minute <B1-Motion> \
[itcl::code $this _handMotionCB minute %x %y]
watch bind minute <ButtonRelease-1> \
[itcl::code $this _handReleaseCB minute %x %y]
watch bind hour <B1-Motion> \
[itcl::code $this _handMotionCB hour %x %y]
watch bind hour <ButtonRelease-1> \
[itcl::code $this _handReleaseCB hour %x %y]
watch bind second <B1-Motion> \
[itcl::code $this _handMotionCB second %x %y]
watch bind second <ButtonRelease-1> \
[itcl::code $this _handReleaseCB second %x %y]
$itk_component(am) configure -state normal
$itk_component(pm) configure -state normal
} elseif {$itk_option(-state) == "disabled"} {
watch bind minute <B1-Motion> {}
watch bind minute <ButtonRelease-1> {}
watch bind hour <B1-Motion> {}
watch bind hour <ButtonRelease-1> {}
watch bind second <B1-Motion> {}
watch bind second <ButtonRelease-1> {}
$itk_component(am) configure -state disabled \
-disabledforeground [$itk_component(am) cget -background]
$itk_component(pm) configure -state normal \
-disabledforeground [$itk_component(am) cget -background]
} else {
error "bad state option \"$itk_option(-state)\":\
should be normal or disabled"
}
}
# ------------------------------------------------------------------
# OPTION: showampm
#
# Configure the display of the AM/PM radio buttons.
# ------------------------------------------------------------------
itcl::configbody ::iwidgets::Watch::showampm {
switch -- $itk_option(-showampm) {
0 - no - false - off {
pack forget $itk_component(am)
pack forget $itk_component(pm)
}
1 - yes - true - on {
pack $itk_component(am) -side left -fill both -expand 1
pack $itk_component(pm) -side right -fill both -expand 1
}
default {
error "bad showampm option \"$itk_option(-showampm)\":\
should be boolean"
}
}
}
# ------------------------------------------------------------------
# OPTION: pivotcolor
#
# Configure the color of the clock pivot.
#
itcl::configbody ::iwidgets::Watch::pivotcolor {
watch itemconfigure pivot -fill $itk_option(-pivotcolor)
}
# ------------------------------------------------------------------
# OPTION: clockstipple
#
# Configure the stipple pattern for the clock fill color.
#
itcl::configbody ::iwidgets::Watch::clockstipple {
watch itemconfigure clock -stipple $itk_option(-clockstipple)
}
# ------------------------------------------------------------------
# OPTION: clockcolor
#
# Configure the color of the clock.
#
itcl::configbody ::iwidgets::Watch::clockcolor {
watch itemconfigure clock -fill $itk_option(-clockcolor)
}
# ------------------------------------------------------------------
# OPTION: hourcolor
#
# Configure the color of the hour hand.
#
itcl::configbody ::iwidgets::Watch::hourcolor {
watch itemconfigure hour -fill $itk_option(-hourcolor)
}
# ------------------------------------------------------------------
# OPTION: minutecolor
#
# Configure the color of the minute hand.
#
itcl::configbody ::iwidgets::Watch::minutecolor {
watch itemconfigure minute -fill $itk_option(-minutecolor)
}
# ------------------------------------------------------------------
# OPTION: secondcolor
#
# Configure the color of the second hand.
#
itcl::configbody ::iwidgets::Watch::secondcolor {
watch itemconfigure second -fill $itk_option(-secondcolor)
}
# ------------------------------------------------------------------
# OPTION: tickcolor
#
# Configure the color of the ticks.
#
itcl::configbody ::iwidgets::Watch::tickcolor {
watch itemconfigure tick -outline $itk_option(-tickcolor)
}
# ------------------------------------------------------------------
# OPTION: hourradius
#
# Configure the radius of the hour hand.
#
itcl::configbody ::iwidgets::Watch::hourradius {
_displayClock
}
# ------------------------------------------------------------------
# OPTION: minuteradius
#
# Configure the radius of the minute hand.
#
itcl::configbody ::iwidgets::Watch::minuteradius {
_displayClock
}
# ------------------------------------------------------------------
# OPTION: secondradius
#
# Configure the radius of the second hand.
#
itcl::configbody ::iwidgets::Watch::secondradius {
_displayClock
}
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