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627 lines
19 KiB
Plaintext
627 lines
19 KiB
Plaintext
#
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# Watch
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# ----------------------------------------------------------------------
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# Implements a a clock widget in a canvas.
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#
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# ----------------------------------------------------------------------
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# AUTHOR: John A. Tucker EMAIL: jatucker@spd.dsccc.com
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#
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# ======================================================================
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# Copyright (c) 1997 DSC Technologies Corporation
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# ======================================================================
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# Permission to use, copy, modify, distribute and license this software
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# and its documentation for any purpose, and without fee or written
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# agreement with DSC, is hereby granted, provided that the above copyright
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# notice appears in all copies and that both the copyright notice and
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# warranty disclaimer below appear in supporting documentation, and that
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# the names of DSC Technologies Corporation or DSC Communications
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# Corporation not be used in advertising or publicity pertaining to the
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# software without specific, written prior permission.
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#
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# DSC DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING
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# ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, AND NON-
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# INFRINGEMENT. THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, AND THE
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# AUTHORS AND DISTRIBUTORS HAVE NO OBLIGATION TO PROVIDE MAINTENANCE,
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# SUPPORT, UPDATES, ENHANCEMENTS, OR MODIFICATIONS. IN NO EVENT SHALL
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# DSC BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR
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# ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTUOUS ACTION,
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# ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS
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# SOFTWARE.
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# ======================================================================
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#
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# Default resources.
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#
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option add *Watch.labelFont \
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-*-Courier-Medium-R-Normal--*-120-*-*-*-*-*-* widgetDefault
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#
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# Usual options.
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#
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itk::usual Watch {
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keep -background -cursor -labelfont -foreground
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}
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itcl::class iwidgets::Watch {
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inherit itk::Widget
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itk_option define -hourradius hourRadius Radius .50
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itk_option define -hourcolor hourColor Color red
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itk_option define -minuteradius minuteRadius Radius .80
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itk_option define -minutecolor minuteColor Color yellow
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itk_option define -pivotradius pivotRadius Radius .10
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itk_option define -pivotcolor pivotColor Color white
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itk_option define -secondradius secondRadius Radius .90
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itk_option define -secondcolor secondColor Color black
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itk_option define -clockcolor clockColor Color white
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itk_option define -clockstipple clockStipple ClockStipple {}
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itk_option define -state state State normal
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itk_option define -showampm showAmPm ShowAmPm true
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itk_option define -tickcolor tickColor Color black
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constructor {args} {}
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destructor {}
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#
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# Public methods
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#
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public {
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method get {{format "-string"}}
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method show {{time "now"}}
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method watch {args}
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}
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#
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# Private methods
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#
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private {
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method _handMotionCB {tag x y}
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method _drawHand {tag}
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method _handReleaseCB {tag x y}
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method _displayClock {{when "later"}}
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variable _interior
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variable _radius
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variable _theta
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variable _extent
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variable _reposition "" ;# non-null => _displayClock pending
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variable _timeVar
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variable _x0 1
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variable _y0 1
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common _ampmVar
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common PI [expr {2*asin(1.0)}]
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}
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}
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#
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# Provide a lowercased access method for the Watch class.
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#
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proc ::iwidgets::watch {pathName args} {
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uplevel ::iwidgets::Watch $pathName $args
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}
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#
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# Use option database to override default resources of base classes.
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#
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option add *Watch.width 155 widgetDefault
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option add *Watch.height 175 widgetDefault
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# -----------------------------------------------------------------------------
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# CONSTRUCTOR
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# -----------------------------------------------------------------------------
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itcl::body iwidgets::Watch::constructor { args } {
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#
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# Add back to the hull width and height options and make the
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# borderwidth zero since we don't need it.
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#
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set _interior $itk_interior
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itk_option add hull.width hull.height
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component hull configure -borderwidth 0
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grid propagate $itk_component(hull) no
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set _ampmVar($this) "AM"
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set _radius(outer) 1
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set _radius(hour) 1
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set _radius(minute) 1
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set _radius(second) 1
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set _theta(hour) 30
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set _theta(minute) 6
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set _theta(second) 6
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set _extent(hour) 14
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set _extent(minute) 14
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set _extent(second) 2
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set _timeVar(hour) 12
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set _timeVar(minute) 0
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set _timeVar(second) 0
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#
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# Create the frame in which the "AM" and "PM" radiobuttons will be drawn
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#
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itk_component add frame {
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frame $itk_interior.frame
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}
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#
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# Create the canvas in which the clock will be drawn
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#
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itk_component add canvas {
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canvas $itk_interior.canvas
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}
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bind $itk_component(canvas) <Map> +[itcl::code $this _displayClock]
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bind $itk_component(canvas) <Configure> +[itcl::code $this _displayClock]
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#
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# Create the "AM" and "PM" radiobuttons to be drawn in the canvas
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#
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itk_component add am {
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radiobutton $itk_component(frame).am \
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-text "AM" \
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-value "AM" \
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-variable [itcl::scope _ampmVar($this)]
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} {
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usual
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rename -font -labelfont labelFont Font
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}
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itk_component add pm {
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radiobutton $itk_component(frame).pm \
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-text "PM" \
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-value "PM" \
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-variable [itcl::scope _ampmVar($this)]
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} {
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usual
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rename -font -labelfont labelFont Font
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}
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#
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# Create the canvas item for displaying the main oval which encapsulates
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# the entire clock.
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#
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watch create oval 0 0 2 2 -width 5 -tags clock
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#
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# Create the canvas items for displaying the 60 ticks marks around the
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# inner perimeter of the watch.
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#
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set extent 3
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for {set i 0} {$i < 60} {incr i} {
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set start [expr {$i*6-1}]
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set tag [expr {[expr {$i%5}] == 0 ? "big" : "little"}]
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watch create arc 0 0 0 0 \
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-style arc \
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-extent $extent \
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-start $start \
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-tags "tick$i tick $tag"
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}
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#
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# Create the canvas items for displaying the hour, minute, and second hands
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# of the watch. Add bindings to allow the mouse to move and set the
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# clock hands.
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#
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watch create arc 1 1 1 1 -extent 30 -tags minute
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watch create arc 1 1 1 1 -extent 30 -tags hour
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watch create arc 1 1 1 1 -tags second
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#
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# Create the canvas item for displaying the center of the watch in which
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# the hour, minute, and second hands will pivot.
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#
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watch create oval 0 0 1 1 -width 5 -fill black -tags pivot
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#
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# Position the "AM/PM" button frame and watch canvas.
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#
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grid $itk_component(frame) -row 0 -column 0 -sticky new
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grid $itk_component(canvas) -row 1 -column 0 -sticky nsew
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grid rowconfigure $itk_interior 0 -weight 0
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grid rowconfigure $itk_interior 1 -weight 1
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grid columnconfigure $itk_interior 0 -weight 1
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eval itk_initialize $args
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}
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# -----------------------------------------------------------------------------
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# DESTURCTOR
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# -----------------------------------------------------------------------------
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itcl::body iwidgets::Watch::destructor {} {
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if {$_reposition != ""} {
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after cancel $_reposition
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}
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}
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# -----------------------------------------------------------------------------
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# METHODS
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# -----------------------------------------------------------------------------
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# -----------------------------------------------------------------------------
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# METHOD: _handReleaseCB tag x y
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#
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# -----------------------------------------------------------------------------
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itcl::body iwidgets::Watch::_handReleaseCB {tag x y} {
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set atanab [expr {atan2(double($y-$_y0),double($x-$_x0))*(180/$PI)}]
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set degrees [expr {$atanab > 0 ? [expr {360-$atanab}] : abs($atanab)}]
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set ticks [expr {round($degrees/$_theta($tag))}]
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set _timeVar($tag) [expr {((450-$ticks*$_theta($tag))%360)/$_theta($tag)}]
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if {$tag == "hour" && $_timeVar(hour) == 0} {
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set _timeVar($tag) 12
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}
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_drawHand $tag
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}
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# -----------------------------------------------------------------------------
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# PROTECTED METHOD: _handMotionCB tag x y
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#
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# -----------------------------------------------------------------------------
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itcl::body iwidgets::Watch::_handMotionCB {tag x y} {
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if {$x == $_x0 || $y == $_y0} {
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return
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}
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set a [expr {$y-$_y0}]
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set b [expr {$x-$_x0}]
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set c [expr {hypot($a,$b)}]
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set atanab [expr {atan2(double($a),double($b))*(180/$PI)}]
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set degrees [expr {$atanab > 0 ? [expr 360-$atanab] : abs($atanab)}]
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set x2 [expr {$_x0+$_radius($tag)*($b/double($c))}]
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set y2 [expr {$_y0+$_radius($tag)*($a/double($c))}]
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watch coords $tag \
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[expr {$x2-$_radius($tag)}] \
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[expr {$y2-$_radius($tag)}] \
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[expr {$x2+$_radius($tag)}] \
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[expr {$y2+$_radius($tag)}]
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set start [expr {$degrees-180-($_extent($tag)/2)}]
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watch itemconfigure $tag -start $start -extent $_extent($tag)
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}
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# -----------------------------------------------------------------------------
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# PROTECTED METHOD: get ?format?
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#
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# -----------------------------------------------------------------------------
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itcl::body iwidgets::Watch::get {{format "-string"}} {
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set timestr [format "%02d:%02d:%02d %s" \
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$_timeVar(hour) $_timeVar(minute) \
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$_timeVar(second) $_ampmVar($this)]
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switch -- $format {
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"-string" {
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return $timestr
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}
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"-clicks" {
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return [clock scan $timestr]
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}
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default {
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error "bad format option \"$format\":\
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should be -string or -clicks"
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}
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}
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}
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# -----------------------------------------------------------------------------
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# METHOD: watch ?args?
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#
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# Evaluates the specified args against the canvas component.
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# -----------------------------------------------------------------------------
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itcl::body iwidgets::Watch::watch {args} {
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return [eval $itk_component(canvas) $args]
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}
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# -----------------------------------------------------------------------------
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# METHOD: _drawHand tag
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#
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# -----------------------------------------------------------------------------
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itcl::body iwidgets::Watch::_drawHand {tag} {
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set degrees [expr {abs(450-($_timeVar($tag)*$_theta($tag)))%360}]
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set radians [expr {$degrees*($PI/180)}]
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set x [expr {$_x0+$_radius($tag)*cos($radians)}]
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set y [expr {$_y0+$_radius($tag)*sin($radians)*(-1)}]
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watch coords $tag \
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[expr {$x-$_radius($tag)}] \
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[expr {$y-$_radius($tag)}] \
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[expr {$x+$_radius($tag)}] \
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[expr {$y+$_radius($tag)}]
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set start [expr {$degrees-180-($_extent($tag)/2)}]
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watch itemconfigure $tag -start $start
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}
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# ------------------------------------------------------------------
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# PUBLIC METHOD: show time
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#
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# Changes the currently displayed time to be that of the time
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# argument. The time may be specified either as a string or an
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# integer clock value. Reference the clock command for more
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# information on obtaining times and their formats.
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# ------------------------------------------------------------------
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itcl::body iwidgets::Watch::show {{time "now"}} {
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if {$time == "now"} {
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set seconds [clock seconds]
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} elseif {![catch {clock format $time}]} {
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set seconds $time
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} elseif {[catch {set seconds [clock scan $time]}]} {
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error "bad time: \"$time\", must be a valid time\
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string, clock clicks value or the keyword now"
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}
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set timestring [clock format $seconds -format "%I %M %S %p"]
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set _timeVar(hour) [expr int(1[lindex $timestring 0] - 100)]
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set _timeVar(minute) [expr int(1[lindex $timestring 1] - 100)]
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set _timeVar(second) [expr int(1[lindex $timestring 2] - 100)]
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set _ampmVar($this) [lindex $timestring 3]
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_drawHand hour
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_drawHand minute
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_drawHand second
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}
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# -----------------------------------------------------------------------------
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# PROTECTED METHOD: _displayClock ?when?
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#
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# Places the hour, minute, and second dials in the canvas. If "when" is "now",
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# the change is applied immediately. If it is "later" or it is not specified,
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# then the change is applied later, when the application is idle.
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# -----------------------------------------------------------------------------
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itcl::body iwidgets::Watch::_displayClock {{when "later"}} {
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if {$when == "later"} {
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if {$_reposition == ""} {
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set _reposition [after idle [itcl::code $this _displayClock now]]
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}
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return
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}
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#
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# Compute the center coordinates for the clock based on the
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# with and height of the canvas.
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#
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set width [winfo width $itk_component(canvas)]
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set height [winfo height $itk_component(canvas)]
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set _x0 [expr {$width/2}]
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set _y0 [expr {$height/2}]
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#
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# Set the radius of the watch, pivot, hour, minute and second items.
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#
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set _radius(outer) [expr {$_x0 < $_y0 ? $_x0 : $_y0}]
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set _radius(pivot) [expr {$itk_option(-pivotradius)*$_radius(outer)}]
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set _radius(hour) [expr {$itk_option(-hourradius)*$_radius(outer)}]
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set _radius(minute) [expr {$itk_option(-minuteradius)*$_radius(outer)}]
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set _radius(second) [expr {$itk_option(-secondradius)*$_radius(outer)}]
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set outerWidth [watch itemcget clock -width]
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#
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# Set the coordinates of the clock item
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#
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set x1Outer $outerWidth
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set y1Outer $outerWidth
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set x2Outer [expr {$width-$outerWidth}]
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set y2Outer [expr {$height-$outerWidth}]
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watch coords clock $x1Outer $y1Outer $x2Outer $y2Outer
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#
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# Set the coordinates of the tick items
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#
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set offset [expr {$outerWidth*2}]
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set x1Tick [expr {$x1Outer+$offset}]
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set y1Tick [expr {$y1Outer+$offset}]
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set x2Tick [expr {$x2Outer-$offset}]
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set y2Tick [expr {$y2Outer-$offset}]
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for {set i 0} {$i < 60} {incr i} {
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watch coords tick$i $x1Tick $y1Tick $x2Tick $y2Tick
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}
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set maxTickWidth [expr {$_radius(outer)-$_radius(second)+1}]
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set minTickWidth [expr {round($maxTickWidth/2)}]
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watch itemconfigure big -width $maxTickWidth
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watch itemconfigure little -width [expr {round($maxTickWidth/2)}]
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#
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# Set the coordinates of the pivot item
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#
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set x1Center [expr {$_x0-$_radius(pivot)}]
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set y1Center [expr {$_y0-$_radius(pivot)}]
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set x2Center [expr {$_x0+$_radius(pivot)}]
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set y2Center [expr {$_y0+$_radius(pivot)}]
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watch coords pivot $x1Center $y1Center $x2Center $y2Center
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#
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# Set the coordinates of the hour, minute, and second dial items
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#
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watch itemconfigure hour -extent $_extent(hour)
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_drawHand hour
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watch itemconfigure minute -extent $_extent(minute)
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_drawHand minute
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watch itemconfigure second -extent $_extent(second)
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_drawHand second
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set _reposition ""
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}
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# -----------------------------------------------------------------------------
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# OPTIONS
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# -----------------------------------------------------------------------------
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# ------------------------------------------------------------------
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# OPTION: state
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#
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# Configure the editable state of the widget. Valid values are
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# normal and disabled. In a disabled state, the hands of the
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# watch are not selectabled.
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# ------------------------------------------------------------------
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itcl::configbody ::iwidgets::Watch::state {
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if {$itk_option(-state) == "normal"} {
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watch bind minute <B1-Motion> \
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[itcl::code $this _handMotionCB minute %x %y]
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watch bind minute <ButtonRelease-1> \
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[itcl::code $this _handReleaseCB minute %x %y]
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watch bind hour <B1-Motion> \
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[itcl::code $this _handMotionCB hour %x %y]
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watch bind hour <ButtonRelease-1> \
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[itcl::code $this _handReleaseCB hour %x %y]
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watch bind second <B1-Motion> \
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[itcl::code $this _handMotionCB second %x %y]
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watch bind second <ButtonRelease-1> \
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[itcl::code $this _handReleaseCB second %x %y]
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$itk_component(am) configure -state normal
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$itk_component(pm) configure -state normal
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} elseif {$itk_option(-state) == "disabled"} {
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watch bind minute <B1-Motion> {}
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watch bind minute <ButtonRelease-1> {}
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watch bind hour <B1-Motion> {}
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watch bind hour <ButtonRelease-1> {}
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watch bind second <B1-Motion> {}
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watch bind second <ButtonRelease-1> {}
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$itk_component(am) configure -state disabled \
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-disabledforeground [$itk_component(am) cget -background]
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$itk_component(pm) configure -state normal \
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-disabledforeground [$itk_component(am) cget -background]
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} else {
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error "bad state option \"$itk_option(-state)\":\
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should be normal or disabled"
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}
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}
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# ------------------------------------------------------------------
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# OPTION: showampm
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#
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# Configure the display of the AM/PM radio buttons.
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# ------------------------------------------------------------------
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itcl::configbody ::iwidgets::Watch::showampm {
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switch -- $itk_option(-showampm) {
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0 - no - false - off {
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pack forget $itk_component(am)
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pack forget $itk_component(pm)
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}
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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
|
|
}
|
|
|