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# This file creates a visual test for arcs.  It is part of the Tk

# visual test suite, which is invoked via the "visual" script.

#

# RCS: @(#) $Id: arc.tcl,v 1.1.1.1 2002-01-16 10:25:58 markom Exp $

catch {destroy .t}

toplevel .t

wm title .t "Visual Tests for Canvas Arcs"

wm iconname .t "Arcs"

wm geom .t +0+0

wm minsize .t 1 1

canvas .t.c -width 650 -height 600 -relief raised

pack .t.c -expand yes -fill both

button .t.quit -text Quit -command {destroy .t}

pack .t.quit -side bottom -pady 3 -ipadx 4 -ipady 2

puts "depth is [winfo depth .t]"

if {[winfo depth .t] > 1} {

    set fill1 aquamarine3

    set fill2 aquamarine3

    set fill3 IndianRed1

    set outline2 IndianRed3

} else {

    set fill1 black

    set fill2 white

    set fill3 Black

    set outline2 white

}

set outline black

.t.c create arc 20 20 220 120 -start 30 -extent 270 -outline $fill1 -width 14 \

        -style arc

.t.c create arc 260 20 460 120 -start 30 -extent 270 -fill $fill2 -width 14 \

        -style chord -outline $outline

.t.c create arc 500 20 620 160 -start 30 -extent 270 -fill {} -width 14 \

        -style chord -outline $outline -outlinestipple gray50

.t.c create arc 20 260 140 460 -start 45 -extent 90 -fill $fill2 -width 14 \

        -style pieslice -outline $outline

.t.c create arc 180 260 300 460 -start 45 -extent 90 -fill {} -width 14 \

        -style pieslice -outline $outline

.t.c create arc 340 260 460 460 -start 30 -extent 150 -fill $fill2 -width 14 \

        -style chord -outline $outline -stipple gray50 -outlinestipple gray25

.t.c create arc 500 260 620 460 -start 30 -extent 150 -fill {} -width 14 \

        -style chord -outline $outline

.t.c create arc 20 450 140 570 -start 135 -extent 270 -fill $fill1 -width 14 \

        -style pieslice -outline {}

.t.c create arc 180 450 300 570 -start 30 -extent -90 -fill $fill1 -width 14 \

        -style pieslice -outline {}

.t.c create arc 340 450 460 570 -start 320 -extent 270 -fill $fill1 -width 14 \

        -style chord -outline {}

.t.c create arc 500 450 620 570 -start 350 -extent -110 -fill $fill1 -width 14 \

        -style chord -outline {}

.t.c addtag arc withtag all

.t.c addtag circle withtag [.t.c create oval 320 200 340 220 -fill MistyRose3]

.t.c bind arc <Any-Enter> {

    set prevFill [lindex [.t.c itemconf current -fill] 4]

    set prevOutline [lindex [.t.c itemconf current -outline] 4]

    if {($prevFill != "") || ($prevOutline == "")} {

        .t.c itemconf current -fill $fill3

    }

    if {$prevOutline != ""} {

        .t.c itemconf current -outline $outline2

    }

}

.t.c bind arc <Any-Leave> {.t.c itemconf current -fill $prevFill -outline $prevOutline}

bind .t.c <1> {markarea %x %y}

bind .t.c <B1-Motion> {strokearea %x %y}

proc markarea {x y} {

    global areaX1 areaY1

    set areaX1 $x

    set areaY1 $y

}

proc strokearea {x y} {

    global areaX1 areaY1 areaX2 areaY2

    if {($areaX1 != $x) && ($areaY1 != $y)} {

        .t.c delete area

        .t.c addtag area withtag [.t.c create rect $areaX1 $areaY1 $x $y \

                -outline black]

        set areaX2 $x

        set areaY2 $y

    }

}

bind .t.c <Control-f> {

    puts stdout "Enclosed: [.t.c find enclosed $areaX1 $areaY1 $areaX2 $areaY2]"

    puts stdout "Overlapping: [.t.c find overl $areaX1 $areaY1 $areaX2 $areaY2]"

}

bind .t.c <3> {puts stdout "%x %y"}

# The code below allows the circle to be move by shift-dragging.

bind .t.c <Shift-1> {

    set curx %x

    set cury %y

}

bind .t.c <Shift-B1-Motion> {

    .t.c move circle [expr %x-$curx] [expr %y-$cury]

    set curx %x

    set cury %y

}

# The binding below flashes the closest item to the mouse.

bind .t.c <Control-c> {

    set closest [.t.c find closest %x %y]

    set oldfill [lindex [.t.c itemconf $closest -fill] 4]

    .t.c itemconf $closest -fill IndianRed1

    after 200 [list .t.c itemconfig $closest -fill $oldfill]

}

proc c {option value} {.t.c itemconf 2 $option $value}

bind .t.c a {

    set go 1

    set i 1

    while {$go} {

        if {$i >= 50} {

            set delta -5

        }

        if {$i <= 5} {

            set delta 5

        }

        incr i $delta

        c -start $i

        c -extent [expr 360-2*$i]

        after 20

        update

    }

}

bind .t.c b {set go 0}

bind .t.c <Control-x> {.t.c delete current}