path: root/demos/demo.tcl

#!../TclTk-8.4.7/bin/wish84.exe

package require Tk 8.4

set thisPlatform $::tcl_platform(platform)
if {$thisPlatform eq "unix" && [tk windowingsystem] eq "aqua"} {
    set thisPlatform "macosx"
}

# Get full pathname to this file
set ScriptDir [file normalize [file dirname [info script]]]

# Command to create a full pathname in this file's directory
proc Path {args} {
    return [file normalize [eval file join [list $::ScriptDir] $args]]
}

# Create some photo images on demand
proc InitPics {args} {
    foreach pattern $args {
	if {[lsearch [image names] $pattern] == -1} {
	    foreach file [glob -directory [Path pics] $pattern.gif] {
		set imageName [file root [file tail $file]]
		# I created an image called "file", which clobbered the
		# original Tcl command "file". Then I got confused.
		if {[llength [info commands $imageName]]} {
		    error "don't want to create image called \"$imageName\""
		}
		image create photo $imageName -file $file

		# Hack -- Create a "selected" version too
		image create photo ${imageName}Sel
		${imageName}Sel copy $imageName
		imagetint ${imageName}Sel $::SystemHighlight 128
	    }
	}
    }
    return
}

if {[catch {
    package require dbwin 1.0
}]} {
    proc dbwin s {puts -nonewline $s}
}

# package require treectrl

# Return TRUE if we are running from the development directory
proc IsDevelopment {} {
    return [file exists [Path .. generic]]
}

# When using configure/make, the "make demo" Makefile target sets the value of
# the TREECTRL_LIBRARY environment variable which is used by tcl_findLibrary to
# find our treectrl.tcl file. When *not* using configure/make, we set the value
# of TREECTRL_LIBRARY and load the shared library manually. Note that
# tcl_findLibrary is called by the Treectrl_Init() routine in C.
if {[IsDevelopment]} {
    set ::env(TREECTRL_LIBRARY) [Path .. library]
    switch -- $::thisPlatform {
	macintosh {
	    load [Path .. treectrl.shlb]
	}
	macosx {
	    load [Path .. build treectrl.dylib]
	}
	unix {

	    # Try to load libtreectrl*.so on Unix
	    load [glob -directory [Path ..] libtreectrl*[info sharedlibextension]]
	}
	default {

	    # Windows build
	    load [glob -directory [Path .. Build] treectrl*[info sharedlibextension]]
	}
    }

} else {
    lappend ::auto_path [Path ..]
    package require treectrl 1.1
}

# Demo sources
foreach file {
    bitmaps
    explorer
    help
    imovie
    layout
    mailwasher
    outlook-folders
    outlook-newgroup
    random
    www-options
} {
    source [Path $file.tcl]
}

# Get default colors
set w [listbox .listbox]
set SystemButtonFace [$w cget -highlightbackground]
set SystemHighlight [$w cget -selectbackground]
set SystemHighlightText [$w cget -selectforeground]
destroy $w

proc MakeMenuBar {} {
    set m [menu .menubar]
    . configure -menu $m
    set m2 [menu $m.mFile -tearoff no]
    if {$::tcl_platform(platform) ne "unix"} {
	console eval {.console conf -height 8}
	$m2 add command -label "Console" -command {
	    if {[console eval {winfo ismapped .}]} {
		console hide
	    } else {
		console show
	    }
	}
    }
    $m2 add command -label "View Source" -command ToggleSourceWindow
    $m2 add command -label Quit -command exit
    $m add cascade -label File -menu $m2
    return
}

proc MakeSourceWindow {} {
    set w [toplevel .source]
    set f [frame $w.f -borderwidth 0]
    switch -- $::thisPlatform {
	macintosh -
	macosx {
	    set font {Geneva 9}
	}
	unix {
	    set font {Courier 16}
	}
	default {
	    set font {Courier 9}
	}
    }
    text $f.t -font $font -tabs [font measure $font 1234] -wrap none \
	-yscrollcommand "$f.sv set" -xscrollcommand "$f.sh set"
    scrollbar $f.sv -orient vertical -command "$f.t yview"
    scrollbar $f.sh -orient horizontal -command "$f.t xview"
    pack $f -expand yes -fill both
    grid columnconfigure $f 0 -weight 1
    grid rowconfigure $f 0 -weight 1
    grid configure $f.t -row 0 -column 0 -sticky news
    grid configure $f.sh -row 1 -column 0 -sticky we
    grid configure $f.sv -row 0 -column 1 -sticky ns

    wm protocol $w WM_DELETE_WINDOW "wm withdraw $w"
    wm geom $w -0+0
    wm withdraw $w

    return
}
proc ShowSource {file} {
    wm title .source "Demo Source: $file"
    set path [Path $file]
    set t .source.f.t
    set chan [open $path]
    $t delete 1.0 end
    $t insert end [read $chan]
    $t mark set insert 1.0
    close $chan
    return
}
proc ToggleSourceWindow {} {
    set w .source
    if {[winfo ismapped $w]} {
	wm withdraw $w
    } else {
	wm deiconify $w
    }
    return
}

MakeSourceWindow
MakeMenuBar

proc TreePlusScrollbarsInAFrame {f h v} {
    frame $f -borderwidth 1 -relief sunken
    switch -- $::thisPlatform {
	macintosh {
	    set font {Geneva 9}
	}
	macosx {
	    set font {{Lucida Grande} 11}
	}
	unix {
	    set font {Helvetica 16}
	}
	default {
	    # There is a bug on my Win98 box with Tk_MeasureChars() and
	    # MS Sans Serif 8.
	    set font {{MS Sans} 8}
	}
    }
    treectrl $f.t -highlightthickness 0 -borderwidth 0 -font $font
    $f.t configure -xscrollincrement 20
    $f.t debug configure -enable no -display no
    if {$h} {
	scrollbar $f.sh -orient horizontal -command "$f.t xview"
	#		$f.t configure -xscrollcommand "$f.sh set"
	$f.t notify bind $f.sh <Scroll-x> { %W set %l %u }
	bind $f.sh <ButtonPress-1> "focus $f.t"
    }
    if {$v} {
	scrollbar $f.sv -orient vertical -command "$f.t yview"
	#		$f.t configure -yscrollcommand "$f.sv set"
	$f.t notify bind $f.sv <Scroll-y> { %W set %l %u }
	bind $f.sv <ButtonPress-1> "focus $f.t"
    }
    grid columnconfigure $f 0 -weight 1
    grid rowconfigure $f 0 -weight 1
    grid configure $f.t -row 0 -column 0 -sticky news
    if {$h} {
	grid configure $f.sh -row 1 -column 0 -sticky we
    }
    if {$v} {
	grid configure $f.sv -row 0 -column 1 -sticky ns
    }
    return
}

proc MakeMainWindow {} {

    wm title . "TkTreeCtrl Demo"

    switch -- $::thisPlatform {
	macintosh -
	macosx {
	    wm geometry . +40+40
	}
	default {
	    wm geometry . +0+0
	}
    }

    panedwindow .pw2 -orient horizontal -borderwidth 0
    panedwindow .pw1 -orient vertical -borderwidth 0

    # Tree + scrollbar: demos
    TreePlusScrollbarsInAFrame .f1 0 1
    .f1.t configure -showbuttons no -showlines no -showroot no -height 100
    .f1.t column create -text "List of Demos" -expand yes -button no

    # Tree + scrollbar: styles + elements in list
    TreePlusScrollbarsInAFrame .f4 0 1
    .f4.t configure -showroot no -height 140
    .f4.t column create -text "Elements and Styles" -expand yes -button no

    # Tree + scrollbar: styles + elements in selected item
    TreePlusScrollbarsInAFrame .f3 0 1
    .f3.t configure -showroot no
    .f3.t column create -text "Styles in Item" -expand yes -button no

    .pw1 add .f1 .f4 .f3 -height 150

    # Frame on right
    frame .f2

    # Tree + scrollbars
    TreePlusScrollbarsInAFrame .f2.f1 1 1
    .f2.f1.t configure -indent 19
    .f2.f1.t debug configure -enable no -display yes -erasecolor pink -displaydelay 30

    # Give it a big border to debug drawing
    .f2.f1.t configure -borderwidth 6 -relief ridge -highlightthickness 3

    grid columnconfigure .f2 0 -weight 1
    grid rowconfigure .f2 0 -weight 1
    grid configure .f2.f1 -row 0 -column 0 -sticky news -pady 0

    .pw2 add .pw1 -width 200
    .pw2 add .f2 -width 450

    pack .pw2 -expand yes -fill both

    ###
    # A treectrl widget can generate the following built-in events:
    # <ActiveItem> called when the active item changes
    # <Collapse-before> called before an item is closed
    # <Collapse-after> called after an item is closed
    # <Expand-before> called before an item is opened
    # <Expand-after> called after an item is opened
    # <Selection> called when items are added to or removed from the selection
    # <Scroll-x> called when horizontal scroll position changes
    # <Scroll-y> called when vertical scroll position changes
    #
    # The application programmer can define custom events to be
    # generated by the "T notify generate" command. The following events
    # are generated by the example bindings.

    .f2.f1.t notify install event Header
    .f2.f1.t notify install detail Header invoke

    .f2.f1.t notify install event Drag
    .f2.f1.t notify install detail Drag begin
    .f2.f1.t notify install detail Drag end
    .f2.f1.t notify install detail Drag receive

    .f2.f1.t notify install event Edit
    .f2.f1.t notify install detail Edit accept
    ###

    return
}

proc MakeListPopup {} {
    set m [menu .f2.f1.t.mTree -tearoff no]

    set m2 [menu $m.mCollapse -tearoff no]
    $m add cascade -label Collapse -menu $m2

    set m2 [menu $m.mExpand -tearoff no]
    $m add cascade -label Expand -menu $m2

    set m2 [menu $m.mBgImg -tearoff no]
    $m2 add radiobutton -label none -variable Popup(bgimg) -value none \
        -command {.f2.f1.t configure -backgroundimage ""}
    $m2 add radiobutton -label sky -variable Popup(bgimg) -value sky \
        -command {.f2.f1.t configure -backgroundimage $Popup(bgimg)}
    $m add cascade -label "Background Image" -menu $m2

    set m2 [menu $m.mBgMode -tearoff no]
    foreach value {column index row visindex} {
        $m2 add radiobutton -label $value -variable Popup(bgmode) -value $value \
	    -command {.f2.f1.t configure -backgroundmode $Popup(bgmode)}
    }
    $m add cascade -label "Background Mode" -menu $m2

    set m2 [menu $m.mDebug -tearoff no]
    $m2 add checkbutton -label Data -variable Popup(debug,data) \
	-command {.f2.f1.t debug configure -data $Popup(debug,data)}
    $m2 add checkbutton -label Display -variable Popup(debug,display) \
	-command {.f2.f1.t debug configure -display $Popup(debug,display)}
    $m2 add checkbutton -label Enable -variable Popup(debug,enable) \
	-command {.f2.f1.t debug configure -enable $Popup(debug,enable)}
    $m add cascade -label Debug -menu $m2

    set m2 [menu $m.mBuffer -tearoff no]
    $m2 add radiobutton -label "none" -variable Popup(doublebuffer) -value none \
	-command {.f2.f1.t configure -doublebuffer $Popup(doublebuffer)}
    $m2 add radiobutton -label "item" -variable Popup(doublebuffer) -value item \
	-command {.f2.f1.t configure -doublebuffer $Popup(doublebuffer)}
    $m2 add radiobutton -label "window" -variable Popup(doublebuffer) -value window \
	-command {.f2.f1.t configure -doublebuffer $Popup(doublebuffer)}
    $m add cascade -label Buffering -menu $m2

    set m2 [menu $m.mLineStyle -tearoff no]
    $m2 add radiobutton -label "dot" -variable Popup(linestyle) -value dot \
	-command {.f2.f1.t configure -linestyle $Popup(linestyle)}
    $m2 add radiobutton -label "solid" -variable Popup(linestyle) -value solid \
	-command {.f2.f1.t configure -linestyle $Popup(linestyle)}
    $m add cascade -label "Line style" -menu $m2

    set m2 [menu $m.mOrient -tearoff no]
    $m2 add radiobutton -label "Horizontal" -variable Popup(orient) -value horizontal \
	-command {.f2.f1.t configure -orient $Popup(orient)}
    $m2 add radiobutton -label "Vertical" -variable Popup(orient) -value vertical \
	-command {.f2.f1.t configure -orient $Popup(orient)}
    $m add cascade -label Orient -menu $m2

    set m2 [menu $m.mSelectMode -tearoff no]
    foreach mode [list browse extended multiple single] {
	$m2 add radiobutton -label $mode -variable Popup(selectmode) -value $mode \
	    -command {.f2.f1.t configure -selectmode $Popup(selectmode)}
    }
    $m add cascade -label Selectmode -menu $m2

    set m2 [menu $m.mShow -tearoff no]
    $m2 add checkbutton -label "Buttons" -variable Popup(showbuttons) \
	-command {.f2.f1.t configure -showbuttons $Popup(showbuttons)}
    $m2 add checkbutton -label "Header" -variable Popup(showheader) \
	-command {.f2.f1.t configure -showheader $Popup(showheader)}
    $m2 add checkbutton -label "Lines" -variable Popup(showlines) \
	-command {.f2.f1.t configure -showlines $Popup(showlines)}
    $m2 add checkbutton -label "Root" -variable Popup(showroot) \
	-command {.f2.f1.t configure -showroot $Popup(showroot)}
    $m2 add checkbutton -label "Root Button" -variable Popup(showrootbutton) \
	-command {.f2.f1.t configure -showrootbutton $Popup(showrootbutton)}
    $m add cascade -label Show -menu $m2

    set m2 [menu $m.mVisible -tearoff no]
    $m add cascade -label Visible -menu $m2
    return
}

proc MakeHeaderPopup {} {
    set m [menu .f2.f1.t.mHeader -tearoff no]

    set m2 [menu $m.mArrow -tearoff no]
    $m add cascade -label Arrow -menu $m2
    $m2 add radiobutton -label "None" -variable Popup(arrow) -value none -command {.f2.f1.t column configure $Popup(column) -arrow none}
    $m2 add radiobutton -label "Up" -variable Popup(arrow) -value up -command {.f2.f1.t column configure $Popup(column) -arrow up}
    $m2 add radiobutton -label "Down" -variable Popup(arrow) -value down -command {.f2.f1.t column configure $Popup(column) -arrow down}
    $m2 add separator
    $m2 add radiobutton -label "Side Left" -variable Popup(arrow,side) -value left -command {.f2.f1.t column configure $Popup(column) -arrowside left}
    $m2 add radiobutton -label "Side Right" -variable Popup(arrow,side) -value right -command {.f2.f1.t column configure $Popup(column) -arrowside right}
    $m2 add separator
    $m2 add radiobutton -label "Gravity Left" -variable Popup(arrow,gravity) -value left -command {.f2.f1.t column configure $Popup(column) -arrowgravity left}
    $m2 add radiobutton -label "Gravity Right" -variable Popup(arrow,gravity) -value right -command {.f2.f1.t column configure $Popup(column) -arrowgravity right}

    $m add checkbutton -label "Expand" -variable Popup(expand) -command {.f2.f1.t column configure $Popup(column) -expand $Popup(expand)}
    $m add checkbutton -label "Squeeze" -variable Popup(squeeze) -command {.f2.f1.t column configure $Popup(column) -squeeze $Popup(squeeze)}

    set m2 [menu $m.mJustify -tearoff no]
    $m add cascade -label Justify -menu $m2
    $m2 add radiobutton -label "Left" -variable Popup(justify) -value left -command {.f2.f1.t column configure $Popup(column) -justify left}
    $m2 add radiobutton -label "Center" -variable Popup(justify) -value center -command {.f2.f1.t column configure $Popup(column) -justify center}
    $m2 add radiobutton -label "Right" -variable Popup(justify) -value right -command {.f2.f1.t column configure $Popup(column) -justify right}
    return
}

MakeMainWindow
MakeListPopup
MakeHeaderPopup

InitPics sky

bind .f2.f1.t <ButtonPress-3> {
    set id [%W identify %x %y]
    if {$id ne ""} {
	if {[lindex $id 0] eq "header"} {
	    set Popup(column) [lindex $id 1]
	    set Popup(arrow) [%W column cget $Popup(column) -arrow]
	    set Popup(arrow,side) [%W column cget $Popup(column) -arrowside]
	    set Popup(arrow,gravity) [%W column cget $Popup(column) -arrowgravity]
	    set Popup(expand) [%W column cget $Popup(column) -expand]
	    set Popup(squeeze) [%W column cget $Popup(column) -squeeze]
	    set Popup(justify) [%W column cget $Popup(column) -justify]
	    tk_popup %W.mHeader %X %Y
	    return
	}
    }
    set m %W.mTree.mCollapse
    $m delete 0 end
    $m add command -label "All" -command {%W item collapse all}
    if {$id ne ""} {
	if {[lindex $id 0] eq "item"} {
	    set item [lindex $id 1]
	    $m add command -label "Item $item" -command "%W item collapse $item"
	    $m add command -label "Item $item (recurse)" -command "%W item collapse $item -recurse"
	}
    }
    set m %W.mTree.mExpand
    $m delete 0 end
    $m add command -label "All" -command {%W item expand all}
    if {$id ne ""} {
	if {[lindex $id 0] eq "item"} {
	    set item [lindex $id 1]
	    $m add command -label "Item $item" -command "%W item expand $item"
	    $m add command -label "Item $item (recurse)" -command "%W item expand $item -recurse"
	}
    }
    foreach option {data display enable} {
	set Popup(debug,$option) [%W debug cget -$option]
    }
    set Popup(bgimg) [%W cget -backgroundimage]
    set Popup(bgmode) [%W cget -backgroundmode]
    set Popup(doublebuffer) [%W cget -doublebuffer]
    set Popup(linestyle) [%W cget -linestyle]
    set Popup(orient) [%W cget -orient]
    set Popup(selectmode) [%W cget -selectmode]
    set Popup(showbuttons) [%W cget -showbuttons]
    set Popup(showheader) [%W cget -showheader]
    set Popup(showlines) [%W cget -showlines]
    set Popup(showroot) [%W cget -showroot]
    set Popup(showrootbutton) [%W cget -showrootbutton]
    set m %W.mTree.mVisible
    $m delete 0 end
    for {set i 0} {$i < [%W numcolumns]} {incr i} {
	set Popup(visible,$i) [%W column cget $i -visible]
	$m add checkbutton -label "Column $i \"[%W column cget $i -text]\" \[[%W column cget $i -image]\]" -variable Popup(visible,$i) \
	    -command "%W column configure $i -visible \$Popup(visible,$i)"
    }
    tk_popup %W.mTree %X %Y
}

# Allow "scan" bindings
if {$::thisPlatform eq "windows"} {
    bind .f2.f1.t <Control-ButtonPress-3> { }
}

#
# List of demos
#
proc InitDemoList {} {
    global DemoCmd
    global DemoFile

    set t .f1.t
    $t element create e1 text -fill [list $::SystemHighlightText {selected focus}]
    $t element create e2 rect -fill [list $::SystemHighlight {selected focus} gray {selected !focus}] \
	-showfocus yes
    $t style create s1
    $t style elements s1 {e2 e1}
    # Tk listbox has linespace + 1 height
    $t style layout s1 e2 -union [list e1] -ipadx 2 -ipady {0 1} -iexpand e

    $t configure -defaultstyle s1

    #	"Picture Catalog" DemoPictureCatalog
    #	"Picture Catalog 2" DemoPictureCatalog2
    #	"Folder Contents (Vertical)" DemoExplorerFilesV
    foreach {label command file} [list \
	"Random $::RandomN Items" DemoRandom random.tcl \
	"Random $::RandomN Items, Button Images" DemoRandom2 random.tcl \
	"Outlook Express (Folders)" DemoOutlookFolders outlook-folders.tcl \
	"Outlook Express (Newsgroup)" DemoOutlookNewsgroup outlook-newgroup.tcl \
	"Explorer (Details)" DemoExplorerDetails explorer.tcl \
	"Explorer (List)" DemoExplorerList explorer.tcl \
	"Explorer (Large icons)" DemoExplorerLargeIcons explorer.tcl \
	"Explorer (Small icons)" DemoExplorerSmallIcons explorer.tcl \
	"Internet Options" DemoInternetOptions www-options.tcl \
	"Help Contents" DemoHelpContents help.tcl \
	"Layout" DemoLayout layout.tcl \
	"MailWasher" DemoMailWasher mailwasher.tcl \
	"Bitmaps" DemoBitmaps bitmaps.tcl \
	"iMovie" DemoIMovie imovie.tcl \
	] {
	set item [$t item create]
	$t item lastchild root $item
	#		$t item style set $item 0 s1
	$t item text $item 0 $label
	set DemoCmd($item) $command
	set DemoFile($item) $file
    }
    $t yview moveto 0.0
    return
}

InitDemoList

proc ClicksToSeconds {clicks} {
    return [format "%.2g" [expr {$clicks / 1000000.0}]]
}

proc DemoSet {cmd file} {
    DemoClear
    set clicks [clock clicks]
    uplevel #0 $cmd
    set clicks [expr {[clock clicks] - $clicks}]
    dbwin "set list in [ClicksToSeconds $clicks] seconds ($clicks clicks)\n"
    .f2.f1.t xview moveto 0
    .f2.f1.t yview moveto 0
    update
    DisplayStylesInList
    ShowSource $file
}

.f1.t notify bind .f1.t <Selection> {
    if {%c == 1} {
	set selection [%T selection get]
	set item [lindex $selection 0]
	DemoSet $DemoCmd($item) $DemoFile($item)
    }
}

proc DisplayStylesInList {} {

    set T .f2.f1.t
    set t .f4.t

    # Create elements and styles the first time this is called
    if {[llength [$t style names]] == 0} {
	$t element create e1 text -fill [list $::SystemHighlightText {selected focus}]
	$t element create e2 text -fill [list $::SystemHighlightText {selected focus} "" {selected !focus} blue {}]
	$t element create e3 rect -fill [list $::SystemHighlight {selected focus} gray {selected !focus}] \
	    -showfocus yes

	$t style create s1
	$t style elements s1 {e3 e1}
	$t style layout s1 e3 -union [list e1] -ipadx 1 -ipady {0 1}

	$t style create s2
	$t style elements s2 {e3 e1 e2}
	$t style layout s2 e1 -padx {0 4}
	$t style layout s2 e3 -union [list e1 e2] -ipadx 1 -ipady {0 1}
    }

    # Clear the list
    $t item delete all

    # One item for each element in the demo list
    foreach elem [lsort [$T element names]] {
	set item [$t item create -button yes]
	$t item collapse $item
	$t item style set $item 0 s1
	$t item text $item 0 "Element $elem ([$T element type $elem])"

	# One item for each configuration option for this element
	foreach list [$T element configure $elem] {
	    foreach {name x y default current} $list {}
	    set item2 [$t item create]
	    if {[string equal $default $current]} {
		$t item style set $item2 0 s1
		$t item complex $item2 [list [list e1 -text [list $name $current]]]
	    } else {
		$t item style set $item2 0 s2
		$t item complex $item2 [list [list e1 -text $name] [list e2 -text [list $current]]]
	    }
	    $t item lastchild $item $item2
	}
	$t item lastchild root $item
    }

    # One item for each style in the demo list
    foreach style [lsort [$T style names]] {
	set item [$t item create -button yes]
	$t item collapse $item
	$t item style set $item 0 s1
	$t item text $item 0 "Style $style"

	# One item for each element in the style
	foreach elem [$T style elements $style] {
	    set item2 [$t item create -button yes]
	    $t item collapse $item2
	    $t item style set $item2 0 s1
	    $t item text $item2 0 "Element $elem ([$T element type $elem])"

	    # One item for each layout option for this element in this style
	    foreach {option value} [$T style layout $style $elem] {
		set item3 [$t item create]
		#				$t item hasbutton $item3 no
		$t item style set $item3 0 s1
		$t item text $item3 0 [list $option $value]
		$t item lastchild $item2 $item3
	    }
	    $t item lastchild $item $item2
	}
	$t item lastchild root $item
    }

    $t xview moveto 0
    $t yview moveto 0
    return
}

proc DisplayStylesInItem {item} {

    set T .f2.f1.t
    set t .f3.t
    $t column configure 0 -text "Styles in item [$T index $item]"

    # Create elements and styles the first time this is called
    if {[llength [$t style names]] == 0} {
	$t element create e1 text -fill [list $::SystemHighlightText {selected focus}]
	$t element create e2 text -fill [list $::SystemHighlightText {selected focus} "" {selected !focus} blue {}]
	$t element create e3 rect -fill [list $::SystemHighlight {selected focus} gray {selected !focus}] \
	    -showfocus yes

	$t style create s1
	$t style elements s1 {e3 e1}
	$t style layout s1 e3 -union [list e1] -ipadx {1 2} -ipady {0 1}

	$t style create s2
	$t style elements s2 {e3 e1 e2}
	$t style layout s2 e1 -padx {0 4}
	$t style layout s2 e3 -union [list e1 e2] -ipadx 1 -ipady {0 1}
    }

    # Clear the list
    $t item delete all

    # One item for each item-column
    set column 0
    foreach style [$T item style set $item] {
	set item2 [$t item create]
	$t item collapse $item2
	$t item style set $item2 0 s1
	$t item element configure $item2 0 e1 -text "Column $column: Style $style"
	set button 0

	# One item for each element in this style
	if {[string length $style]} {
	    foreach elem [$T item style elements $item $column] {
		set button 1
		set item3 [$t item create -button yes]
		$t item collapse $item3
		$t item style set $item3 0 s1
		$t item element configure $item3 0 e1 -text "Element $elem ([$T element type $elem])"

		# One item for each configuration option in this element
		foreach list [$T item element configure $item $column $elem] {
		    foreach {name x y default current} $list {}
		    set item4 [$t item create]
		    set masterDefault [$T element cget $elem $name]
		    set sameAsMaster [string equal $masterDefault $current]
		    if {!$sameAsMaster && ![string length $current]} {
			set sameAsMaster 1
			set current $masterDefault
		    }

		    if {$sameAsMaster} {
			$t item style set $item4 0 s1
			$t item complex $item4 [list [list e1 -text "$name [list $current]"]]
		    } else {
			$t item style set $item4 0 s2
			$t item complex $item4 [list [list e1 -text $name] [list e2 -text [list $current]]]
		    }
		    $t item lastchild $item3 $item4
		}
		$t item lastchild $item2 $item3
	    }
	    if {$button} {
		$t item configure $item2 -button yes
	    }
	}
	$t item lastchild root $item2
	incr column
    }
    $t xview moveto 0
    $t yview moveto 0

    return
}

# When one item is selected in the demo list, display the styles in that item.
# See DemoClear for why the tag "DontDelete" is used
.f2.f1.t notify bind DontDelete <Selection> {
    if {%c == 1} {
	set selection [%T selection get]
	DisplayStylesInItem [lindex $selection 0]
    }
}

proc DemoClear {} {

    set T .f2.f1.t

    # Clear the demo list
    $T item delete all

    # Clear all bindings on the demo list added by the previous demo.
    # This is why DontDelete is used for the <Selection> binding.
    foreach pattern [$T notify bind $T] {
	$T notify bind $T $pattern {}
    }

    # Clear all run-time states
    foreach state [$T state names] {
	$T state undefine $state
    }

    # Clear the styles-in-item list
    .f3.t item delete all

    # Delete columns in demo list
    while {[$T numcolumns]} {
	$T column delete 0
    }

    # Delete all styles in demo list
    eval $T style delete [$T style names]

    # Delete all elements in demo list
    eval $T element delete [$T element names]

    $T item configure root -button no
    $T item expand root

    # Restore some happy defaults to the demo list
    $T configure -orient vertical -wrap "" -xscrollincrement 0 \
	-yscrollincrement 0 -itemheight 0 -showheader yes \
	-background white -scrollmargin 0 -xscrolldelay 50 -yscrolldelay 50 \
	-openbuttonimage "" -closedbuttonimage "" -backgroundmode row \
	-treecolumn 0 -indent 19 -defaultstyle {} -backgroundimage ""

    # Restore default bindings to the demo list
    bindtags $T [list $T TreeCtrl [winfo toplevel $T] all]

    catch {destroy $T.entry}
    catch {destroy $T.text}

    return
}

#
# Demo: Picture catalog
#
proc DemoPictureCatalog {} {

    set T .f2.f1.t

    $T configure -showroot no -showbuttons no -showlines no \
	-selectmode multiple -orient horizontal -wrap window \
	-yscrollincrement 50 -showheader no

    $T element create elemTxt text -fill {SystemHighlightText {selected focus}}
    $T element create elemSelTxt rect -fill {SystemHighlight {selected focus}}
    $T element create elemSelImg rect -outline {SystemHighlight {selected focus}} \
	-outlinewidth 4
    $T element create elemImg rect -fill gray -width 80 -height 120

    set S [$T style create STYLE -orient vertical]
    $T style elements $S {elemSelImg elemImg elemSelTxt elemTxt}
    $T style layout $S elemSelImg -union elemImg -ipadx 6 -ipady 6
    $T style layout $S elemSelTxt -union elemTxt
    $T style layout $S elemImg -pady {0 6}

    for {set i 1} {$i <= 10} {incr i} {
	set I [$T item create]
	$T item style set $I 0 $S
	$T item text $I 0 "Picture #$i"
	$T item lastchild root $I
    }

    return
}

#
# Demo: Picture catalog
#
proc DemoPictureCatalog2 {} {

    set T .f2.f1.t

    $T configure -showroot no -showbuttons no -showlines no \
	-selectmode multiple -orient horizontal -wrap window \
	-yscrollincrement 50 -showheader no

    $T element create elemTxt text -fill {SystemHighlightText {selected focus}} \
	-justify left -wrap word -lines 2
    $T element create elemSelTxt rect -fill {SystemHighlight {selected focus}}
    $T element create elemSelImg rect -outline {SystemHighlight {selected focus}} \
	-outlinewidth 4
    $T element create elemImg rect -fill gray

    set S [$T style create STYLE -orient vertical]
    $T style elements $S {elemSelImg elemImg elemSelTxt elemTxt}
    $T style layout $S elemSelImg -union elemImg \
	-ipadx 6 -ipady 6
    $T style layout $S elemSelTxt -union elemTxt
    $T style layout $S elemImg -pady {0 6}
    $T style layout $S elemImg -expand n
    $T style layout $S elemTxt -expand s

    for {set i 1} {$i <= 10} {incr i} {
	set I [$T item create]
	$T item style set $I 0 $S
	$T item text $I 0 "This is\nPicture\n#$i"
	$T item element configure $I 0 elemImg -width [expr int(20 + rand() * 80)] \
	    -height [expr int(20 + rand() * 120)]
	$T item lastchild root $I
    }

    return
}




proc CursorWindow {} {
    set w .cursors
    if {[winfo exists $w]} {
	destroy $w
    }
    toplevel $w
    set c [canvas $w.canvas -background white -width [expr {50 * 10}] \
	       -highlightthickness 0 -borderwidth 0]
    pack $c -expand yes -fill both
    set cursors {
	X_cursor
	arrow
	based_arrow_down
	based_arrow_up
	boat
	bogosity
	bottom_left_corner
	bottom_right_corner
	bottom_side
	bottom_tee
	box_spiral
	center_ptr
	circle
	clock
	coffee_mug
	cross
	cross_reverse
	crosshair
	diamond_cross
	dot
	dotbox
	double_arrow
	draft_large
	draft_small
	draped_box
	exchange
	fleur
	gobbler
	gumby
	hand1
	hand2
	heart
	icon
	iron_cross
	left_ptr
	left_side
	left_tee
	leftbutton
	ll_angle
	lr_angle
	man
	middlebutton
	mouse
	pencil
	pirate
	plus
	question_arrow
	right_ptr
	right_side
	right_tee
	rightbutton
	rtl_logo
	sailboat
	sb_down_arrow
	sb_h_double_arrow
	sb_left_arrow
	sb_right_arrow
	sb_up_arrow
	sb_v_double_arrow
	shuttle
	sizing
	spider
	spraycan
	star
	target
	tcross
	top_left_arrow
	top_left_corner
	top_right_corner
	top_side
	top_tee
	trek
	ul_angle
	umbrella
	ur_angle
	watch
	xterm
    }
    set col 0
    set row 0
    foreach cursor $cursors {
	set x [expr {$col * 50}]
	set y [expr {$row * 40}]
	$c create rectangle $x $y [expr {$x + 50}] [expr {$y + 40}] \
	    -fill gray90 -outline black -width 2 -tags $cursor.rect
	$c create text [expr {$x + 50 / 2}] [expr {$y + 4}] -text $cursor \
	    -anchor n -width 42 -tags $cursor.text
	if {[incr col] == 10} {
	    set col 0
	    incr row
	}
	$c bind $cursor.rect <Enter> "
			$c configure -cursor $cursor
			$c itemconfigure $cursor.rect -fill linen
		"
	$c bind $cursor.rect <Leave> "
			$c configure -cursor {}
			$c itemconfigure $cursor.rect -fill gray90
		"
	$c bind $cursor.text <Enter> "
			$c configure -cursor $cursor
		"
	$c bind $cursor.text <Leave> "
			$c configure -cursor {}
		"
    }
    $c configure -height [expr {($row + 1) * 40}]
    return
}

proc compare {i1 i2} {
    if {$i1 < $i2} { return -1 }
    if {$i1 == $i2} { return 0 }
    return 1
}

# A little screen magnifier for X11
if {$::thisPlatform eq "unix"} {

    set Loupe(zoom) 3
    set Loupe(x) 0
    set Loupe(y) 0
    set Loupe(auto) 1

    proc LoupeAfter {} {

	global Loupe

	set x [winfo pointerx .]
	set y [winfo pointery .]
	if {$Loupe(auto) || ($Loupe(x) != $x) || ($Loupe(y) != $y)} {
	    set w [image width $Loupe(image)]
	    set h [image height $Loupe(image)]
	    loupe $Loupe(image) $x $y $w $h $::Loupe(zoom)
	    set Loupe(x) $x
	    set Loupe(y) $y
	}
	after $Loupe(delay) LoupeAfter
	return
    }

    proc MakeLoupeWindow {} {

	global Loupe

	set w [toplevel .loupe]
	wm geometry $w -0+0
	image create photo ImageLoupe -width 150 -height 150
	pack [label $w.label -image ImageLoupe]
	set Loupe(image) ImageLoupe
	set Loupe(delay) 500
	after $Loupe(delay) LoupeAfter
	return
    }
    MakeLoupeWindow

    # unix
}