# 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 © 1994 The Regents of the University of California.
# Copyright © 1994-1997 Sun Microsystems, Inc.
# Copyright © 1998-1999 Scriptics Corporation.
# All rights reserved.

package require tcltest 2.2
eval tcltest::configure $argv
tcltest::loadTestedCommands

testConstraint failsOnUbuntu [expr {![info exists ::env(CI)] || ![string match Linux $::tcl_platform(os)]}]
testConstraint failsOnXQuarz [expr {$tcl_platform(os) ne "Darwin" || [tk windowingsystem] ne "x11" }]
testConstraint nodeprecated [expr {"nodeprecated" ni [tk::pkgconfig list]}]

proc scroll args {
    global scrollInfo
    set scrollInfo $args
}

proc getTroughSize {w} {
    if {[testConstraint testmetrics]} {
        # Only Windows has [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 $w]}]
	}
    } else {
        if {[tk windowingsystem] eq "x11"} {
            # Calculations here assume that the arrow area is a square.
	    if [string match v* [$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] \
			    - [$w cget -bd] + 1)*2}]
	    }
        } else {
            # macOS aqua
	    if [string match v* [$w cget -orient]] {
	        return [expr {[winfo height $w] \
			- ([$w cget -highlightthickness] \
			  +[$w cget -bd])*2}]
	    } else {
	        return [expr {[winfo width $w] \
			- ([$w cget -highlightthickness] \
			  +[$w cget -bd])*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 "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 "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"}}
} {
    lassign $test name value okResult badValue badResult
    # Assume $name is plain; true of all our in-use options!
    test scrollbar-1.$i {configuration options} \
	".s configure $name [list $value]; .s cget $name" $okResult
    incr i
    if {$badValue ne ""} {
	test scrollbar-1.$i {configuration options} \
	    -body [list .s configure $name $badValue] \
	    -returnCodes error -result $badResult
	incr i
    }
    .s configure $name [lindex [.s configure $name] 3]
}

destroy .s
test scrollbar-2.1 {Tk_ScrollbarCmd procedure} -returnCodes error -body {
    scrollbar
} -result {wrong # args: should be "scrollbar pathName ?-option value ...?"}
test scrollbar-2.2 {Tk_ScrollbarCmd procedure} -body {
    scrollbar gorp
} -returnCodes error -result {bad window path name "gorp"}
test scrollbar-2.3 {Tk_ScrollbarCmd procedure} -setup {
    scrollbar .s
} -body {
    list [winfo class .s] [info command .s]
} -cleanup {
    destroy .s
} -result {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} -setup {
    catch {destroy .s}
} -body {
    scrollbar .s
} -cleanup {
    destroy .s
} -result .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 ...?"}}
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} {
    expr {[.s2 cget -bd] == [lindex [.s2 configure -bd] 3]}
} 1
test scrollbar-3.12 {ScrollbarWidgetCmd procedure, "cget" option} emptyTest {
    # empty test; duplicated scrollbar-3.11
} {}
test scrollbar-3.12.1 {ScrollbarWidgetCmd procedure, "cget" option} emptyTest {
    # empty test; duplicated scrollbar-3.11
} {}
test scrollbar-3.13 {ScrollbarWidgetCmd procedure, "cget" option} {
    expr {[.s2 cget -highlightthickness] == [lindex [.s2 configure -highlightthickness] 3]}
} 1
test scrollbar-3.14 {ScrollbarWidgetCmd procedure, "cget" option} emptyTest {
    # empty test; duplicated scrollbar-3.13
} {}
test scrollbar-3.14.1 {ScrollbarWidgetCmd procedure, "cget" option} emptyTest {
    # empty test; duplicated scrollbar-3.13
} {}
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} {
    format {%.6g} [.s delta 20 0]
} 0
test scrollbar-3.26 {ScrollbarWidgetCmd procedure, "delta" option} {
    format {%.6g} [.s delta 0 20]
} [format %.6g [expr {20.0/([getTroughSize .s]-1)}]]
test scrollbar-3.27 {ScrollbarWidgetCmd procedure, "delta" option} {
    format {%.6g} [.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 [format {%.6g} [.t.s delta 0 20]] \
	    [format {%.6g} [.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] $msg
} {1 {expected integer but got "bogus"}}
test scrollbar-3.33 {ScrollbarWidgetCmd procedure, "fraction" option} {
    format {%.6g} [.s fraction 0 0]
} 0
test scrollbar-3.34 {ScrollbarWidgetCmd procedure, "fraction" option} {
    format {%.6g} [.s fraction 0 1000]
} 1
test scrollbar-3.35 {ScrollbarWidgetCmd procedure, "fraction" option} {
    format {%.6g} [.s fraction 4 21]
} [format %.6g [expr {(21.0 - ([winfo height .s] - [getTroughSize .s])/2.0) \
       /([getTroughSize .s] - 1)}]]
test scrollbar-3.36 {ScrollbarWidgetCmd procedure, "fraction" option} {x11 failsOnUbuntu failsOnXQuarz} {
    format {%.6g} [.s fraction 4 179]
} 1
test scrollbar-3.37 {ScrollbarWidgetCmd procedure, "fraction" option} {testmetrics} {
    format {%.6g} [.s fraction 4 [expr {200 - [testmetrics cyvscroll .s]}]]
} 1
test scrollbar-3.38 {ScrollbarWidgetCmd procedure, "fraction" option} {x11 failsOnUbuntu failsOnXQuarz} {
    format {%.6g} [.s fraction 4 178]
} {0.993711}
test scrollbar-3.39 {ScrollbarWidgetCmd procedure, "fraction" option} {testmetrics win} {
    expr {
    [format {%.6g} [.s fraction 4 [expr {200 - [testmetrics cyvscroll .s] - 2}]]]
	== [format %g [expr {(200.0 - [testmetrics cyvscroll .s]*2 - 2)
			   / ($height - 1 - [testmetrics cyvscroll .s]*2)}]]}
} 1

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} {
    format {%.6g} [.t.s fraction 100 0]
} {0.5}
if {[testConstraint testmetrics]} {
    # Only Windows has [testmetrics]
    place configure .t.s -width [expr {2*[testmetrics cxhscroll .t.s]+1}]
} else {
    if {[tk windowingsystem] eq "x11"} {
        place configure .t.s -width [expr {[winfo height .t.s] - 2*([.t.s cget -highlightthickness] + [.t.s cget -bd] + 1)}]
    } else {
        # macOS aqua
        place configure .t.s -width [expr {2*([.t.s cget -highlightthickness] + [.t.s cget -bd])}]
    }
}
update
test scrollbar-3.42 {ScrollbarWidgetCmd procedure, "fraction" option} {
    format {%.6g} [.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} nodeprecated {
    .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-3.50.1 {ScrollbarWidgetCmd procedure, "identify" option} notAqua {
    .s identify 5 5
} {arrow1}
test scrollbar-3.50.2 {ScrollbarWidgetCmd procedure, "identify" option} aqua {
    # macOS scrollbars have no arrows nowadays
    .s identify 5 5
} {trough1}
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-3.54.1 {ScrollbarWidgetCmd procedure, "identify" option} notAqua {
    .s identify 5 195
} {arrow2}
test scrollbar-3.54.2 {ScrollbarWidgetCmd procedure, "identify" option} aqua {
    # macOS scrollbars have no arrows nowadays
    .s identify 5 195
} {trough2}
test scrollbar-3.56 {ScrollbarWidgetCmd procedure, "identify" option} unix {
    .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} nodeprecated {
    list [catch {.s set abc def ghi jkl} msg] $msg
} {1 {expected integer but got "abc"}}
test scrollbar-3.65 {ScrollbarWidgetCmd procedure, "set" option} nodeprecated {
    list [catch {.s set 1 def ghi jkl} msg] $msg
} {1 {expected integer but got "def"}}
test scrollbar-3.66 {ScrollbarWidgetCmd procedure, "set" option} nodeprecated {
    list [catch {.s set 1 2 ghi jkl} msg] $msg
} {1 {expected integer but got "ghi"}}
test scrollbar-3.67 {ScrollbarWidgetCmd procedure, "set" option} nodeprecated {
    list [catch {.s set 1 2 3 jkl} msg] $msg
} {1 {expected integer but got "jkl"}}
test scrollbar-3.68 {ScrollbarWidgetCmd procedure, "set" option} nodeprecated {
    .s set -10 50 20 30
    .s get
} {0 50 0 0}
test scrollbar-3.69 {ScrollbarWidgetCmd procedure, "set" option} nodeprecated {
    .s set 100 -10 20 30
    .s get
} {100 0 20 30}
test scrollbar-3.70 {ScrollbarWidgetCmd procedure, "set" option} nodeprecated {
    .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"}}
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"}}
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 {ambiguous 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} unix {
    .s identify 8 3
} {}
test scrollbar-6.3 {ScrollbarPosition procedure} unix {
    .s identify 8 196
} {}
test scrollbar-6.4 {ScrollbarPosition procedure} unix {
    .s identify 3 100
} {}
test scrollbar-6.6 {ScrollbarPosition procedure} unix {
    .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}] [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-6.11.1 {ScrollbarPosition procedure} x11 {
    .s identify 8 4
} {arrow1}
test scrollbar-6.11.2 {ScrollbarPosition procedure} aqua {
    # macOS scrollbars have no arrows nowadays
    .s identify 8 4
} {trough1}
test scrollbar-6.12.1 {ScrollbarPosition procedure} {x11 failsOnUbuntu failsOnXQuarz} {
    .s identify 8 19
} {arrow1}
test scrollbar-6.12.2 {ScrollbarPosition procedure} aqua {
    # macOS scrollbars have no arrows nowadays
    .s identify 8 19
} {trough1}
test scrollbar-6.14 {ScrollbarPosition procedure} win {
    .s identify [expr {[winfo width .s] / 2}] 0
} {arrow1}
test scrollbar-6.15 {ScrollbarPosition procedure} {testmetrics win} {
    .s identify [expr {[winfo width .s] / 2}] [expr {[testmetrics cyvscroll .s] - 1}]
} {arrow1}
test scrollbar-6.16 {ScrollbarPosition procedure} unix {
    .s identify 8 20
} {trough1}
test scrollbar-6.17 {ScrollbarPosition procedure} {unix 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 win} {
    .s identify [expr {[winfo width .s] / 2}] [testmetrics cyvscroll .s]
} {trough1}
test scrollbar-6.19 {ScrollbarPosition procedure} {testmetrics win} {
    .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} unix {
    .s identify 8 52
} {slider}
test scrollbar-6.21 {ScrollbarPosition procedure} {unix 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 win} {
    .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 win} {
    .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} unix {
    .s identify 8 84
} {trough2}
test scrollbar-6.25 {ScrollbarPosition procedure} unix {
    .s identify 8 179
} {trough2}
test scrollbar-6.27 {ScrollbarPosition procedure} {testmetrics win} {
    .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 win} {
    .s identify [expr {[winfo width .s] / 2}] [expr {[winfo height .s]
						 - [testmetrics cyvscroll .s] - 1}]
} {trough2}
test scrollbar-6.29.1 {ScrollbarPosition procedure} {x11 failsOnUbuntu failsOnXQuarz} {
    .s identify 8 180
} {arrow2}
test scrollbar-6.29.2 {ScrollbarPosition procedure} aqua {
    # macOS scrollbars have no arrows nowadays
    .s identify 8 180
} {trough2}
test scrollbar-6.30.1 {ScrollbarPosition procedure} x11 {
    .s identify 8 195
} {arrow2}
test scrollbar-6.30.2 {ScrollbarPosition procedure} aqua {
    # macOS scrollbars have no arrows nowadays
    .s identify 8 195
} {trough2}
test scrollbar-6.32 {ScrollbarPosition procedure} {testmetrics win} {
    .s identify [expr {[winfo width .s] / 2}]  [expr {[winfo height .s]
						  - [testmetrics cyvscroll .s]}]
} {arrow2}
test scrollbar-6.33 {ScrollbarPosition procedure} win {
    .s identify [expr {[winfo width .s] / 2}] [expr {[winfo height .s] - 1}]
} {arrow2}
test scrollbar-6.34 {ScrollbarPosition procedure} unix {
    .s identify 4 100
} {trough2}
test scrollbar-6.35 {ScrollbarPosition procedure} {unix failsOnUbuntu failsOnXQuarz} {
    .s identify 18 100
} {trough2}
test scrollbar-6.37 {ScrollbarPosition procedure} win {
    .s identify 0 100
} {trough2}
test scrollbar-6.38 {ScrollbarPosition procedure} win {
    .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-6.39.1 {ScrollbarPosition procedure} x11 {
    .t.s identify 4 8
} {arrow1}
test scrollbar-6.39.2 {ScrollbarPosition procedure} aqua {
    # macOS scrollbars have no arrows nowadays
    .t.s identify 4 8
} {trough1}
test scrollbar-6.40 {ScrollbarPosition procedure} win {
    .t.s identify 0 [expr {[winfo height .t.s] / 2}]
} {arrow1}
test scrollbar-6.41.1 {ScrollbarPosition procedure} x11 {
    .t.s identify 82 8
} {slider}
test scrollbar-6.41.2 {ScrollbarPosition procedure} aqua {
    # macOS scrollbars have no arrows nowadays
    .t.s identify 82 8
} {trough2}
test scrollbar-6.43 {ScrollbarPosition procedure} {testmetrics win} {
    .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} {unix failsOnUbuntu failsOnXQuarz} {
    .t.s identify 100 18
} {trough2}
test scrollbar-6.46 {ScrollbarPosition procedure} win {
    .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} notAqua {
    # constrained by notAqua because this test clicks on an arrow of the
    # scrollbar - but macOS has no such arrows in modern scrollbars
    proc doit {args} { destroy .t.f }
    proc bgerror {args} {}
    destroy .t.f
    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 <Button> -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} notAqua {
    # constrained by notAqua because this test clicks on an arrow of the
    # scrollbar - but macOS has no such arrows in modern scrollbars
    proc doit {args} { destroy .t.f.s }
    proc bgerror {args} {}
    destroy .t.f
    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 <Button> -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]

test scrollbar-10.1 {<MouseWheel> event on scrollbar} -setup {
    destroy .t .s
} -body {
    pack [text .t -yscrollcommand {.s set}] -side left
    for {set i 1} {$i < 100} {incr i} {.t insert end "Line $i\n"}
    pack [scrollbar .s -command {.t yview}] -fill y -expand 1 -side left
    update
    focus -force .s
    event generate .s <MouseWheel> -delta -120
    after 200 {set eventprocessed 1} ; vwait eventprocessed
    .t index @0,0
} -cleanup {
    destroy .t .s
} -result {4.0}

test scrollbar-10.2 {<MouseWheel> event on scrollbar} -setup {
    destroy .t .s
} -body {
    pack [text .t -xscrollcommand {.s set} -wrap none] -side top
    for {set i 1} {$i < 100} {incr i} {.t insert end "Char $i "}
    pack [scrollbar .s -command {.t xview} -orient horizontal] -fill x -expand 1 -side top
    update
    focus -force .s
    event generate .s <Shift-MouseWheel> -delta -120
    after 200 {set eventprocessed 1} ; vwait eventprocessed
    .t index @0,0
} -cleanup {
    destroy .t .s
} -result {1.3}
test scrollbar-10.3 {<MouseWheel> event on horizontal scrollbar} -setup {
    destroy .t .s
} -body {
    pack [text .t -xscrollcommand {.s set} -wrap none] -side top
    for {set i 1} {$i < 100} {incr i} {.t insert end "Char $i "}
    pack [scrollbar .s -command {.t xview} -orient horizontal] -fill x -expand 1 -side top
    update
    focus -force .s
    event generate .s <MouseWheel> -delta -120
    after 200 {set eventprocessed 1} ; vwait eventprocessed
    .t index @0,0
} -cleanup {
    destroy .t .s
} -result {1.3}

test scrollbar-11.1 {bug fix: [011706ec42] Scrollbar unsafe wrt widget destruction} -body {
    proc destroy_scrollbar {} {
        if {[winfo exists .top.s]} {
            destroy .top.s
        }
    }
    toplevel .top
    scrollbar .top.s
    bind .top.s <Button-2> {destroy_scrollbar}
    pack .top.s
    focus -force .top.s
    update
    event generate .top.s <Button-2>
    update  ; # shall not trigger error  invalid command name ".top.s"
} -cleanup {
    destroy .top.s .top
} -result {}
test scrollbar-11.2 {bug fix: [011706ec42] Scrollbar unsafe wrt widget destruction} -body {
    proc destroy_scrollbar {{y 0}} {
        if {[winfo exists .top.s]} {
            destroy .top.s
        }
    }
    toplevel .top
    wm minsize .top 50 400
    update
    scrollbar .top.s
    bind .top.s <Button-2> {after idle destroy_scrollbar}
    pack .top.s -expand true -fill y
    focus -force .top.s
    update
    event generate .top.s <Button-2> -x 2 -y [expr {[winfo height .top.s] / 2}]
    update  ; # shall not trigger error  invalid command name ".top.s"
} -cleanup {
    destroy .top.s .top
} -result {}

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

# cleanup
cleanupTests
return