# This file is a Tcl script to test out scrollbar widgets and
# the "scrollbar" command of Tk.  It is organized in the standard
# fashion for Tcl tests.
#
# Copyright (c) 1994 The Regents of the University of California.
# Copyright (c) 1994-1997 Sun Microsystems, Inc.
# Copyright (c) 1998-1999 by Scriptics Corporation.
# All rights reserved.
#
# RCS: @(#) $Id: scrollbar.test,v 1.1.1.1 2007/07/10 15:05:18 duncan Exp $

package require tcltest 2.1
namespace import -force tcltest::configure
namespace import -force tcltest::testsDirectory
configure -testdir [file join [pwd] [file dirname [info script]]]
configure -loadfile [file join [testsDirectory] constraints.tcl]
tcltest::loadTestedCommands

## testmetrics is a win/mac only test command
##
testConstraint testmetrics [llength [info commands testmetrics]]

update

proc scroll args {
    global scrollInfo
    set scrollInfo $args
}

proc getTroughSize {w} {
    if {[testConstraint testmetrics]} {
	if [string match v* [$w cget -orient]] {
	    return [expr [winfo height $w] - 2*[testmetrics cyvscroll $w]]
	} else {
	    return [expr [winfo width $w] - 2*[testmetrics cxhscroll $w]]
	}	    
    } else {
	if [string match v* [$w cget -orient]] {
	    return [expr [winfo height $w] \
		    - ([winfo width $w] \
			- [$w cget -highlightthickness] \
			- [$w cget -bd] + 1)*2]
	} else {
	    return [expr [winfo width $w] \
		    - ([winfo height $w] \
			- [$w cget -highlightthickness] \
			- [$w cget -bd] + 1)*2]
	}
    }
}

# XXX Note: this test file is woefully incomplete.  Right now there are
# only bits and pieces of tests.  Please make this file more complete
# as you fix bugs and add features.

foreach {width height} [wm minsize .] {
    set height [expr ($height < 200) ? 200 : $height]
    set width [expr ($width < 1) ? 1 : $width]
} 

frame .f -height $height -width $width
pack .f -side left
scrollbar .s
pack .s -side right -fill y
update
set i 1
foreach test {
    {-activebackground #ff0000 #ff0000 non-existent
	    {unknown color name "non-existent"}}
    {-activerelief sunken sunken non-existent
	    {bad relief type "non-existent": must be flat, groove, raised, ridge, solid, or sunken}}
    {-background #ff0000 #ff0000 non-existent
	    {unknown color name "non-existent"}}
    {-bd 4 4 badValue {bad screen distance "badValue"}}
    {-bg #ff0000 #ff0000 non-existent
	    {unknown color name "non-existent"}}
    {-borderwidth 1.3 1 badValue {bad screen distance "badValue"}}
    {-command "set x" {set x} {} {}}
    {-elementborderwidth 4 4 badValue {bad screen distance "badValue"}}
    {-cursor arrow arrow badValue {bad cursor spec "badValue"}}
    {-highlightbackground #112233 #112233 ugly {unknown color name "ugly"}}
    {-highlightcolor #123456 #123456 bogus {unknown color name "bogus"}}
    {-highlightthickness 6 6 bogus {bad screen distance "bogus"}}
    {-highlightthickness -2 0 {} {}}
    {-jump true 1 silly {expected boolean value but got "silly"}}
    {-orient horizontal horizontal badValue
	    {bad orientation "badValue": must be vertical or horizontal}}
    {-orient horizontal horizontal bogus {bad orientation "bogus": must be vertical or horizontal}}
    {-relief ridge ridge badValue {bad relief type "badValue": must be flat, groove, raised, ridge, solid, or sunken}}
    {-repeatdelay 140 140 129.3 {expected integer but got "129.3"}}
    {-repeatinterval 140 140 129.3 {expected integer but got "129.3"}}
    {-takefocus "any string" "any string" {} {}}
    {-troughcolor #432 #432 lousy {unknown color name "lousy"}}
    {-width 32 32 badValue {bad screen distance "badValue"}}
} {
    set name [lindex $test 0]
    test scrollbar-1.1 {configuration options} {
	.s configure $name [lindex $test 1]
	lindex [.s configure $name] 4
    } [lindex $test 2]
    incr i
    if {[lindex $test 3] != ""} {
	test scrollbar-1.2 {configuration options} {
	    list [catch {.s configure $name [lindex $test 3]} msg] $msg
	} [list 1 [lindex $test 4]]
    }
    .s configure $name [lindex [.s configure $name] 3]
    incr i
}

destroy .s
test scrollbar-2.1 {Tk_ScrollbarCmd procedure} {
    list [catch {scrollbar} msg] $msg
} {1 {wrong # args: should be "scrollbar pathName ?options?"}}
test scrollbar-2.2 {Tk_ScrollbarCmd procedure} {
    list [catch {scrollbar gorp} msg] $msg
} {1 {bad window path name "gorp"}}
test scrollbar-2.3 {Tk_ScrollbarCmd procedure} {
    scrollbar .s
    set x "[winfo class .s] [info command .s]"
    destroy .s
    set x
} {Scrollbar .s}
test scrollbar-2.4 {Tk_ScrollbarCmd procedure} {
    list [catch {scrollbar .s -gorp blah} msg] $msg [winfo exists .s] \
	    [info command .s]
} {1 {unknown option "-gorp"} 0 {}}
test scrollbar-2.5 {Tk_ScrollbarCmd procedure} {
    set x [scrollbar .s]
    destroy .s
    set x
} {.s}

scrollbar .s -orient vertical -command scroll -highlightthickness 2 -bd 2
pack .s -side right -fill y
update
test scrollbar-3.1 {ScrollbarWidgetCmd procedure} {
    list [catch {.s} msg] $msg
} {1 {wrong # args: should be ".s option ?arg arg ...?"}}
test scrollbar-3.2 {ScrollbarWidgetCmd procedure, "cget" option} {
    list [catch {.s cget} msg] $msg
} {1 {wrong # args: should be ".s cget option"}}
test scrollbar-3.3 {ScrollbarWidgetCmd procedure, "cget" option} {
    list [catch {.s cget -gorp} msg] $msg
} {1 {unknown option "-gorp"}}
test scrollbar-3.4 {ScrollbarWidgetCmd procedure, "activate" option} {
    list [catch {.s activate a b} msg] $msg
} {1 {wrong # args: should be ".s activate element"}}
test scrollbar-3.5 {ScrollbarWidgetCmd procedure, "activate" option} {
    .s activate arrow1
    .s activate
} {arrow1}
test scrollbar-3.6 {ScrollbarWidgetCmd procedure, "activate" option} {
    .s activate slider
    .s activate
} {slider}
test scrollbar-3.7 {ScrollbarWidgetCmd procedure, "activate" option} {
    .s activate arrow2
    .s activate
} {arrow2}
test scrollbar-3.8 {ScrollbarWidgetCmd procedure, "activate" option} {
    .s activate s
    .s activate {}
    .s activate
} {}
test scrollbar-3.9 {ScrollbarWidgetCmd procedure, "activate" option} {
    list [catch {.s activate trough1} msg] $msg
} {0 {}}
test scrollbar-3.10 {ScrollbarWidgetCmd procedure, "cget" option} {
    list [catch {.s cget -orient} msg] $msg
} {0 vertical}
scrollbar .s2
test scrollbar-3.11 {ScrollbarWidgetCmd procedure, "cget" option} {pcOnly} {
    list [catch {.s2 cget -bd} msg] $msg
} {0 0}
test scrollbar-3.12 {ScrollbarWidgetCmd procedure, "cget" option} {macOrUnix} {
    list [catch {.s2 cget -bd} msg] $msg
} {0 2}
test scrollbar-3.13 {ScrollbarWidgetCmd procedure, "cget" option} {pcOnly} {
    list [catch {.s2 cget -highlightthickness} msg] $msg
} {0 0}
test scrollbar-3.14 {ScrollbarWidgetCmd procedure, "cget" option} {macOrUnix} {
    list [catch {.s2 cget -highlightthickness} msg] $msg
} {0 1}
destroy .s2
test scrollbar-3.15 {ScrollbarWidgetCmd procedure, "configure" option} {
    llength [.s configure]
} {20}
test scrollbar-3.16 {ScrollbarWidgetCmd procedure, "configure" option} {
    list [catch {.s configure -bad} msg] $msg
} {1 {unknown option "-bad"}}
test scrollbar-3.17 {ScrollbarWidgetCmd procedure, "configure" option} {
    .s configure -orient
} {-orient orient Orient vertical vertical}
test scrollbar-3.18 {ScrollbarWidgetCmd procedure, "configure" option} {
    .s configure -orient horizontal
    set x [.s cget -orient]
    .s configure -orient vertical
    set x
} {horizontal}
test scrollbar-3.19 {ScrollbarWidgetCmd procedure, "configure" option} {
    list [catch {.s configure -bad worse} msg] $msg
} {1 {unknown option "-bad"}}
test scrollbar-3.20 {ScrollbarWidgetCmd procedure, "delta" option} {
    list [catch {.s delta 24} msg] $msg
} {1 {wrong # args: should be ".s delta xDelta yDelta"}}
test scrollbar-3.21 {ScrollbarWidgetCmd procedure, "delta" option} {
    list [catch {.s delta 24 35 42} msg] $msg
} {1 {wrong # args: should be ".s delta xDelta yDelta"}}
test scrollbar-3.22 {ScrollbarWidgetCmd procedure, "delta" option} {
    list [catch {.s delta silly 24} msg] $msg
} {1 {expected integer but got "silly"}}
test scrollbar-3.23 {ScrollbarWidgetCmd procedure, "delta" option} {
    list [catch {.s delta 18 xxyz} msg] $msg
} {1 {expected integer but got "xxyz"}}
test scrollbar-3.24 {ScrollbarWidgetCmd procedure, "delta" option} {
    list [catch {.s delta 18 xxyz} msg] $msg
} {1 {expected integer but got "xxyz"}}
test scrollbar-3.25 {ScrollbarWidgetCmd procedure, "delta" option} {
    .s delta 20 0
} {0}
test scrollbar-3.26 {ScrollbarWidgetCmd procedure, "delta" option} {
    .s delta 0 20
} [format %.6g [expr 20.0/([getTroughSize .s]-1)]]
test scrollbar-3.27 {ScrollbarWidgetCmd procedure, "delta" option} {
    .s delta 0 -20
} [format %.6g [expr -20.0/([getTroughSize .s]-1)]]
test scrollbar-3.28 {ScrollbarWidgetCmd procedure, "delta" option} {
    toplevel .t -width 250 -height 100
    wm geom .t +0+0
    scrollbar .t.s -orient horizontal -borderwidth 2
    place .t.s -width 201
    update
    set result [list [.t.s delta 0 20] \
		    [.t.s delta [expr [getTroughSize .t.s] - 1] 0]]
    destroy .t
    set result
} {0 1}
test scrollbar-3.29 {ScrollbarWidgetCmd procedure, "fraction" option} {
    list [catch {.s fraction 24} msg] $msg
} {1 {wrong # args: should be ".s fraction x y"}}
test scrollbar-3.30 {ScrollbarWidgetCmd procedure, "fraction" option} {
    list [catch {.s fraction 24 30 32} msg] $msg
} {1 {wrong # args: should be ".s fraction x y"}}
test scrollbar-3.31 {ScrollbarWidgetCmd procedure, "fraction" option} {
    list [catch {.s fraction silly 24} msg] $msg
} {1 {expected integer but got "silly"}}
test scrollbar-3.32 {ScrollbarWidgetCmd procedure, "fraction" option} {
    list [catch {.s fraction 24 bogus} msg] $msg
} {1 {expected integer but got "bogus"}}
test scrollbar-3.33 {ScrollbarWidgetCmd procedure, "fraction" option} {
    .s fraction 0 0
} {0}
test scrollbar-3.34 {ScrollbarWidgetCmd procedure, "fraction" option} {
    .s fraction 0 1000
} {1}
test scrollbar-3.35 {ScrollbarWidgetCmd procedure, "fraction" option} {
    .s fraction 4 21
} [format %.6g [expr (21.0 - ([winfo height .s] - [getTroughSize .s])/2.0) \
       /([getTroughSize .s] - 1)]]
test scrollbar-3.36 {ScrollbarWidgetCmd procedure, "fraction" option} {unixOnly} {
    .s fraction 4 179
} {1}
test scrollbar-3.37 {ScrollbarWidgetCmd procedure, "fraction" option} {testmetrics} {
    .s fraction 4 [expr 200 - [testmetrics cyvscroll .s]]
} {1}
test scrollbar-3.38 {ScrollbarWidgetCmd procedure, "fraction" option} {unixOnly} {
    .s fraction 4 178
} {0.993711}
test scrollbar-3.39 {ScrollbarWidgetCmd procedure, "fraction" option} {testmetrics pcOnly} {
    expr [.s fraction 4 [expr 200 - [testmetrics cyvscroll .s] - 2]] \
	== [format %g [expr (200.0 - [testmetrics cyvscroll .s]*2 - 2) \
			   / ($height - 1 - [testmetrics cyvscroll .s]*2)]]
} 1
test scrollbar-3.40 {ScrollbarWidgetCmd procedure, "fraction" option} {macOnly} {
    .s fraction 4 178
} {0.97006}

toplevel .t -width 250 -height 100
wm geom .t +0+0
scrollbar .t.s -orient horizontal -borderwidth 2
place .t.s -width 201
update

test scrollbar-3.41 {ScrollbarWidgetCmd procedure, "fraction" option} {
    .t.s fraction 100 0
} {0.5}
if {[testConstraint testmetrics]} {
    place configure .t.s -width [expr 2*[testmetrics cxhscroll .t.s]+1]
} else {
    place configure .t.s -width [expr [winfo reqwidth .t.s] - 4]
}
update
test scrollbar-3.42 {ScrollbarWidgetCmd procedure, "fraction" option} {
    .t.s fraction 100 0
} {0}
destroy .t
test scrollbar-3.43 {ScrollbarWidgetCmd procedure, "get" option} {
    list [catch {.s get a} msg] $msg
} {1 {wrong # args: should be ".s get"}}
test scrollbar-3.44 {ScrollbarWidgetCmd procedure, "get" option} {
    .s set 100 10 13 14
    .s get
} {100 10 13 14}
test scrollbar-3.45 {ScrollbarWidgetCmd procedure, "get" option} {
    .s set 0.6 0.8
    set result {}
    foreach element [.s get] {
	lappend result [format %.1f $element]
    }
    set result
} {0.6 0.8}
test scrollbar-3.46 {ScrollbarWidgetCmd procedure, "identify" option} {
    list [catch {.s identify 0} msg] $msg
} {1 {wrong # args: should be ".s identify x y"}}
test scrollbar-3.47 {ScrollbarWidgetCmd procedure, "identify" option} {
    list [catch {.s identify 0 0 1} msg] $msg
} {1 {wrong # args: should be ".s identify x y"}}
test scrollbar-3.48 {ScrollbarWidgetCmd procedure, "identify" option} {
    list [catch {.s identify bogus 2} msg] $msg
} {1 {expected integer but got "bogus"}}
test scrollbar-3.49 {ScrollbarWidgetCmd procedure, "identify" option} {
    list [catch {.s identify -1 bogus} msg] $msg
} {1 {expected integer but got "bogus"}}
test scrollbar-3.50 {ScrollbarWidgetCmd procedure, "identify" option} {
    .s identify 5 5
} {arrow1}
test scrollbar-3.51 {ScrollbarWidgetCmd procedure, "identify" option} {
    .s identify 5 35
} {trough1}
test scrollbar-3.52 {ScrollbarWidgetCmd procedure, "identify" option} {
    .s set .3 .6
    .s identify 5 80
} {slider}
test scrollbar-3.53 {ScrollbarWidgetCmd procedure, "identify" option} {
    .s identify 5 145
} {trough2}
test scrollbar-3.54 {ScrollbarWidgetCmd procedure, "identify" option} {unixOrPc} {
    .s identify 5 195
} {arrow2}
test scrollbar-3.55 {ScrollbarWidgetCmd procedure, "identify" option} {macOnly} {
    .s identify 5 195
} {}
test scrollbar-3.56 {ScrollbarWidgetCmd procedure, "identify" option} {unixOnly} {
    .s identify 0 0
} {}
test scrollbar-3.57 {ScrollbarWidgetCmd procedure, "set" option} {
    list [catch {.s set abc def} msg] $msg
} {1 {expected floating-point number but got "abc"}}
test scrollbar-3.58 {ScrollbarWidgetCmd procedure, "set" option} {
    list [catch {.s set 0.6 def} msg] $msg
} {1 {expected floating-point number but got "def"}}
test scrollbar-3.59 {ScrollbarWidgetCmd procedure, "set" option} {
    .s set -.2 .3
    set result {}
    foreach element [.s get] {
	lappend result [format %.1f $element]
    }
    set result
} {0.0 0.3}
test scrollbar-3.60 {ScrollbarWidgetCmd procedure, "set" option} {
    .s set 1.1 .4 
    .s get
} {1.0 1.0}
test scrollbar-3.61 {ScrollbarWidgetCmd procedure, "set" option} {
    .s set .5 -.3 
    .s get
} {0.5 0.5}
test scrollbar-3.62 {ScrollbarWidgetCmd procedure, "set" option} {
    .s set .5 87 
    .s get
} {0.5 1.0}
test scrollbar-3.63 {ScrollbarWidgetCmd procedure, "set" option} {
    .s set .4 .3
    set result {}
    foreach element [.s get] {
	lappend result [format %.1f $element]
    }
    set result
} {0.4 0.4}
test scrollbar-3.64 {ScrollbarWidgetCmd procedure, "set" option} {
    list [catch {.s set abc def ghi jkl} msg] $msg
} {1 {expected integer but got "abc"}}
test scrollbar-3.65 {ScrollbarWidgetCmd procedure, "set" option} {
    list [catch {.s set 1 def ghi jkl} msg] $msg
} {1 {expected integer but got "def"}}
test scrollbar-3.66 {ScrollbarWidgetCmd procedure, "set" option} {
    list [catch {.s set 1 2 ghi jkl} msg] $msg
} {1 {expected integer but got "ghi"}}
test scrollbar-3.67 {ScrollbarWidgetCmd procedure, "set" option} {
    list [catch {.s set 1 2 3 jkl} msg] $msg
} {1 {expected integer but got "jkl"}}
test scrollbar-3.68 {ScrollbarWidgetCmd procedure, "set" option} {
    .s set -10 50 20 30 
    .s get
} {0 50 0 0}
test scrollbar-3.69 {ScrollbarWidgetCmd procedure, "set" option} {
    .s set 100 -10 20 30 
    .s get
} {100 0 20 30}
test scrollbar-3.70 {ScrollbarWidgetCmd procedure, "set" option} {
    .s set 100 50 30 20 
    .s get
} {100 50 30 30}
test scrollbar-3.71 {ScrollbarWidgetCmd procedure, "set" option} {
    list [catch {.s set 1 2 3} msg] $msg
} {1 {wrong # args: should be ".s set firstFraction lastFraction" or ".s set totalUnits windowUnits firstUnit lastUnit"}}
test scrollbar-3.72 {ScrollbarWidgetCmd procedure, "set" option} {
    list [catch {.s set 1 2 3 4 5} msg] $msg
} {1 {wrong # args: should be ".s set firstFraction lastFraction" or ".s set totalUnits windowUnits firstUnit lastUnit"}}
test scrollbar-3.73 {ScrollbarWidgetCmd procedure} {
    list [catch {.s bogus} msg] $msg
} {1 {bad option "bogus": must be activate, cget, configure, delta, fraction, get, identify, or set}}
test scrollbar-3.74 {ScrollbarWidgetCmd procedure} {
    list [catch {.s c} msg] $msg
} {1 {bad option "c": must be activate, cget, configure, delta, fraction, get, identify, or set}}

test scrollbar-4.1 {ScrollbarEventProc procedure} {
    catch {destroy .s1}
    scrollbar .s1 -bg #543210
    rename .s1 .s2
    set x {}
    lappend x [winfo exists .s1]
    lappend x [.s2 cget -bg]
    destroy .s1
    lappend x [info command .s?] [winfo exists .s1] [winfo exists .s2]
} {1 #543210 {} 0 0}

test scrollbar-5.1 {ScrollbarCmdDeletedProc procedure} {
    catch {destroy .s1}
    scrollbar .s1
    rename .s1 {}
    list [info command .s?] [winfo exists .s1]
} {{} 0}

catch {destroy .s}
scrollbar .s -orient vertical -relief sunken -bd 2 -highlightthickness 2
pack .s -side left -fill y
.s set .2 .4
update
test scrollbar-6.1 {ScrollbarPosition procedure} {unixOnly} {
    .s identify 8 3
} {}
test scrollbar-6.2 {ScrollbarPosition procedure} {macOnly} {
    .s identify 8 3
} {arrow1}
test scrollbar-6.3 {ScrollbarPosition procedure} {macOrUnix} {
    .s identify 8 196
} {}
test scrollbar-6.4 {ScrollbarPosition procedure} {unixOnly} {
    .s identify 3 100
} {}
test scrollbar-6.5 {ScrollbarPosition procedure} {macOnly} {
    .s identify 3 100
} {trough2}
test scrollbar-6.6 {ScrollbarPosition procedure} {macOrUnix} {
    .s identify 19 100
} {}
test scrollbar-6.7 {ScrollbarPosition procedure} {
    .s identify [expr [winfo width .s] / 2] -1
} {}
test scrollbar-6.8 {ScrollbarPosition procedure} {
    .s identify [expr [winfo width .s] / 2] [expr [winfo height .s]]
} {}
test scrollbar-6.9 {ScrollbarPosition procedure} {
    .s identify -1 [expr [winfo height .s] / 2]
} {}
test scrollbar-6.10 {ScrollbarPosition procedure} {
    .s identify [winfo width .s] [expr [winfo height .s] / 2]
} {}

test scrollbar-6.11 {ScrollbarPosition procedure} {macOrUnix} {
    .s identify 8 4
} {arrow1}
test scrollbar-6.12 {ScrollbarPosition procedure} {unixOnly} {
    .s identify 8 19
} {arrow1}
test scrollbar-6.13 {ScrollbarPosition procedure} {macOnly} {
    .s identify 8 19
} {trough1}
test scrollbar-6.14 {ScrollbarPosition procedure} {pcOnly} {
    .s identify [expr [winfo width .s] / 2] 0 
} {arrow1}
test scrollbar-6.15 {ScrollbarPosition procedure} {testmetrics pcOnly} {
    .s identify [expr [winfo width .s] / 2] [expr [testmetrics cyvscroll .s] - 1]
} {arrow1}

test scrollbar-6.16 {ScrollbarPosition procedure} {macOrUnix} {
    .s identify 8 20
} {trough1}
test scrollbar-6.17 {ScrollbarPosition procedure} {macOrUnix nonPortable} {
    # Don't know why this is non-portable, but it doesn't work on
    # some platforms.
    .s identify 8 51
} {trough1}
test scrollbar-6.18 {ScrollbarPosition procedure} {testmetrics pcOnly} {
    .s identify [expr [winfo width .s] / 2] [testmetrics cyvscroll .s]
} {trough1}
test scrollbar-6.19 {ScrollbarPosition procedure} {testmetrics pcOnly} {
    .s identify [expr [winfo width .s] / 2] [expr int(.2 / [.s delta 0 1]) \
						+ [testmetrics cyvscroll .s] - 1]
} {trough1}

test scrollbar-6.20 {ScrollbarPosition procedure} {macOrUnix} {
    .s identify 8 52
} {slider}
test scrollbar-6.21 {ScrollbarPosition procedure} {macOrUnix nonPortable} {
    # Don't know why this is non-portable, but it doesn't work on
    # some platforms.
    .s identify 8 83
} {slider}
test scrollbar-6.22 {ScrollbarPosition procedure} {testmetrics pcOnly} {
    .s identify [expr [winfo width .s] / 2] \
	[expr int(.2 / [.s delta 0 1] + 0.5) + [testmetrics cyvscroll .s]]
} {slider}
test scrollbar-6.23 {ScrollbarPosition procedure} {testmetrics pcOnly} {
    .s identify [expr [winfo width .s] / 2] [expr int(.4 / [.s delta 0 1]) \
						 + [testmetrics cyvscroll -s] - 1]
} {slider}

test scrollbar-6.24 {ScrollbarPosition procedure} {macOrUnix} {
    .s identify 8 84
} {trough2}
test scrollbar-6.25 {ScrollbarPosition procedure} {unixOnly} {
    .s identify 8 179
} {trough2}
test scrollbar-6.26 {ScrollbarPosition procedure} {macOnly} {
    .s identify 8 179
} {arrow2}
test scrollbar-6.27 {ScrollbarPosition procedure} {testmetrics pcOnly knownBug} {
    # This asks for 8,21, which is actually the slider, but there is a
    # bug in that GetSystemMetrics(SM_CYVTHUMB) actually returns a value
    # that is larger than the thumb displayed, skewing the ability to
    # calculate the trough2 area correctly (Win2k).  -- hobbs
    .s identify [expr [winfo width .s] / 2] [expr int(.4 / [.s delta 0 1]) \
						 + [testmetrics cyvscroll .s]]
} {trough2}
test scrollbar-6.28 {ScrollbarPosition procedure} {testmetrics pcOnly} {
    .s identify [expr [winfo width .s] / 2] [expr [winfo height .s] \
						 - [testmetrics cyvscroll .s] - 1]
} {trough2}

test scrollbar-6.29 {ScrollbarPosition procedure} {macOrUnix} {
    .s identify 8 180
} {arrow2}
test scrollbar-6.30 {ScrollbarPosition procedure} {unixOnly} {
    .s identify 8 195
} {arrow2}
test scrollbar-6.31 {ScrollbarPosition procedure} {macOnly} {
    .s identify 8 195
} {}
test scrollbar-6.32 {ScrollbarPosition procedure} {testmetrics pcOnly} {
    .s identify [expr [winfo width .s] / 2]  [expr [winfo height .s] \
						  - [testmetrics cyvscroll .s]]
} {arrow2}
test scrollbar-6.33 {ScrollbarPosition procedure} {pcOnly} {
    .s identify [expr [winfo width .s] / 2] [expr [winfo height .s] - 1]
} {arrow2}

test scrollbar-6.34 {ScrollbarPosition procedure} {macOrUnix} {
    .s identify 4 100
} {trough2}
test scrollbar-6.35 {ScrollbarPosition procedure} {unixOnly} {
    .s identify 18 100
} {trough2}
test scrollbar-6.36 {ScrollbarPosition procedure} {macOnly} {
    .s identify 18 100
} {}
test scrollbar-6.37 {ScrollbarPosition procedure} {pcOnly} {
    .s identify 0 100
} {trough2}
test scrollbar-6.38 {ScrollbarPosition procedure} {pcOnly} {
    .s identify [expr [winfo width .s] - 1] 100
} {trough2}

catch {destroy .t}
toplevel .t -width 250 -height 150
wm geometry .t +0+0
scrollbar .t.s -orient horizontal -relief sunken -bd 2 -highlightthickness 2
place .t.s -width 200
.t.s set .2 .4
update
test scrollbar-6.39 {ScrollbarPosition procedure} {macOrUnix} {
    .t.s identify 4 8
} {arrow1}
test scrollbar-6.40 {ScrollbarPosition procedure} {pcOnly} {
    .t.s identify 0 [expr [winfo height .t.s] / 2]
} {arrow1}
test scrollbar-6.41 {ScrollbarPosition procedure} {unixOnly} {
    .t.s identify 82 8
} {slider}
test scrollbar-6.42 {ScrollbarPosition procedure} {macOnly} {
    .t.s identify 82 8
} {}
test scrollbar-6.43 {ScrollbarPosition procedure} {testmetrics pcOnly} {
    .t.s identify [expr int(.4 / [.t.s delta 1 0]) + [testmetrics cxhscroll .t.s] \
		       - 1] [expr [winfo height .t.s] / 2] 
} {slider}
test scrollbar-6.44 {ScrollbarPosition procedure} {unixOnly} {
    .t.s identify 100 18
} {trough2}
test scrollbar-6.45 {ScrollbarPosition procedure} {macOnly} {
    .t.s identify 100 18
} {}
test scrollbar-6.46 {ScrollbarPosition procedure} {pcOnly} {
    .t.s identify 100 [expr [winfo height .t.s] - 1]
} {trough2}

test scrollbar-7.1 {EventuallyRedraw} {
    .s configure -orient horizontal
    update
    set result [.s cget -orient]
    .s configure -orient vertical
    update
    lappend result [.s cget -orient]
} {horizontal vertical}

catch {destroy .t}
toplevel .t
wm geometry .t +0+0
test scrollbar-8.1 {TkScrollbarEventProc: recursive deletion} {
    proc doit {args} { destroy .t.f }
    proc bgerror {args} {}
    frame .t.f
    scrollbar .t.f.s -command doit
    pack .t.f -fill both -expand 1
    pack .t.f.s -fill y -expand 1 -side right
    wm geometry .t 100x100
    .t.f.s set 0 .5
    update
    set result [winfo exists .t.f.s]
    event generate .t.f.s <ButtonPress> -button 1 -x [expr [winfo width .t.f.s] / 2] -y 5
    event generate .t <ButtonRelease> -button 1
    update
    lappend result [winfo exists .t.f.s] [winfo exists .t.f]
    rename bgerror {}
    set result
} {1 0 0}
test scrollbar-8.2 {TkScrollbarEventProc: recursive deletion} {
    proc doit {args} { destroy .t.f.s }
    proc bgerror {args} {}
    frame .t.f
    scrollbar .t.f.s -command doit
    pack .t.f -fill both -expand 1
    pack .t.f.s -fill y -expand 1 -side right
    wm geometry .t 100x100
    .t.f.s set 0 .5
    update
    set result [winfo exists .t.f.s]
    event generate .t.f.s <ButtonPress> -button 1 -x [expr [winfo width .t.f.s] / 2] -y 5
    event generate .t.f <ButtonRelease> -button 1
    update
    lappend result [winfo exists .t.f.s] [winfo exists .t.f]
    rename bgerror {}
    set result
} {1 0 1}

set l [interp hidden]
deleteWindows

test scrollbar-9.1 {scrollbar widget vs hidden commands} {
    catch {destroy .s}
    scrollbar .s
    interp hide {} .s
    destroy .s
    list [winfo children .] [interp hidden]
} [list {} $l]

catch {destroy .s}
catch {destroy .t}

# cleanup
::tcltest::cleanupTests
return