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#
# Demo: Help contents
#
proc DemoHelpContents {} {
set T .f2.f1.t
set height [font metrics [$T cget -font] -linespace]
if {$height < 18} {
set height 18
}
#
# Configure the treectrl widget
#
$T configure -showroot no -showbuttons no -showlines no -itemheight $height \
-selectmode browse
InitPics help-*
#
# Create columns
#
$T column create -text "Help Contents"
# Define a new item state
$T state define mouseover
#
# Create elements
#
$T element create e1 image -image help-page
$T element create e2 image -image {help-book-open {open} help-book-closed {}}
$T element create e3 text -fill [list $::SystemHighlightText {selected focus} blue {mouseover}] \
-font [list "[$T cget -font] underline" {mouseover}]
$T element create e4 rect -fill [list $::SystemHighlight {selected focus}] -showfocus yes
#
# Create styles using the elements
#
# book
set S [$T style create s1]
$T style elements $S {e4 e1 e3}
$T style layout $S e1 -padx {0 4} -expand ns
$T style layout $S e3 -expand ns
$T style layout $S e4 -union [list e3] -iexpand ns -ipadx 2
# page
set S [$T style create s2]
$T style elements $S {e4 e2 e3}
$T style layout $S e2 -padx {0 4} -expand ns
$T style layout $S e3 -expand ns
$T style layout $S e4 -union [list e3] -iexpand ns -ipadx 2
#
# Create items and assign styles
#
set parentList [list root {} {} {} {} {} {}]
set parent root
foreach {depth style text} {
0 s1 "Welcome to Help"
0 s2 "Introducing Windows 98"
1 s2 "How to Use Help"
2 s1 "Find a topic"
2 s1 "Get more out of help"
1 s2 "Register Your Software"
2 s1 "Registering Windows 98 online"
1 s2 "What's New in Windows 98"
2 s1 "Innovative, easy-to-use features"
2 s1 "Improved reliability"
2 s1 "A faster operating system"
2 s1 "True Web integration"
2 s1 "More entertaining and fun"
1 s2 "If You're New to Windows 98"
2 s2 "Tips for Macintosh Users"
3 s1 "Why does the mouse have two buttons?"
} {
set item [$T item create]
$T item style set $item 0 $style
$T item element configure $item 0 e3 -text $text
$T item collapse $item
$T item lastchild [lindex $parentList $depth] $item
incr depth
set parentList [lreplace $parentList $depth $depth $item]
}
bind TreeCtrlHelp <Double-ButtonPress-1> {
if {[lindex [%W identify %x %y] 0] eq "header"} {
TreeCtrl::DoubleButton1 %W %x %y
} else {
TreeCtrl::HelpButton1 %W %x %y
}
break
}
bind TreeCtrlHelp <ButtonPress-1> {
TreeCtrl::HelpButton1 %W %x %y
break
}
bind TreeCtrlHelp <Button1-Motion> {
# noop
}
bind TreeCtrlHelp <Button1-Leave> {
# noop
}
bind TreeCtrlHelp <Motion> {
TreeCtrl::HelpMotion %W %x %y
}
bind TreeCtrlHelp <Leave> {
TreeCtrl::HelpMotion %W %x %y
}
bind TreeCtrlHelp <KeyPress-Return> {
if {[llength [%W selection get]] == 1} {
%W item toggle [lindex [%W selection get] 0]
}
break
}
set ::TreeCtrl::Priv(help,prev) ""
bindtags $T [list $T TreeCtrlHelp TreeCtrl [winfo toplevel $T] all]
return
}
# This is an alternate implementation that does not define a new item state
# to change the appearance of the item under the cursor.
proc DemoHelpContents_2 {} {
set T .f2.f1.t
set height [font metrics [$T cget -font] -linespace]
if {$height < 18} {
set height 18
}
#
# Configure the treectrl widget
#
$T configure -showroot no -showbuttons no -showlines no -itemheight $height \
-selectmode browse
InitPics help-*
#
# Create columns
#
$T column create -text "Help Contents"
#
# Create elements
#
$T element create e1 image -image help-page
$T element create e2 image -image {help-book-open {open} help-book-closed {}}
$T element create e3 text -fill [list $::SystemHighlightText {selected focus}]
$T element create e4 rect -fill [list $::SystemHighlight {selected focus}] -showfocus yes
$T element create e5 text -fill [list $::SystemHighlightText {selected focus} blue {}] \
-font "[$T cget -font] underline"
#
# Create styles using the elements
#
# book
set S [$T style create s1]
$T style elements $S {e4 e1 e3}
$T style layout $S e1 -padx {0 4} -expand ns
$T style layout $S e3 -expand ns
$T style layout $S e4 -union [list e3] -iexpand ns -ipadx 2
# page
set S [$T style create s2]
$T style elements $S {e4 e2 e3}
$T style layout $S e2 -padx {0 4} -expand ns
$T style layout $S e3 -expand ns
$T style layout $S e4 -union [list e3] -iexpand ns -ipadx 2
# book (focus)
set S [$T style create s1.f]
$T style elements $S {e4 e1 e5}
$T style layout $S e1 -padx {0 4} -expand ns
$T style layout $S e5 -expand ns
$T style layout $S e4 -union [list e5] -iexpand ns -ipadx {1 2}
# page (focus)
set S [$T style create s2.f]
$T style elements $S {e4 e2 e5}
$T style layout $S e2 -padx {0 4} -expand ns
$T style layout $S e5 -expand ns
$T style layout $S e4 -union [list e5] -iexpand ns -ipadx {1 2}
#
# Create items and assign styles
#
set parentList [list root {} {} {} {} {} {}]
set parent root
foreach {depth style text} {
0 s1 "Welcome to Help"
0 s2 "Introducing Windows 98"
1 s2 "How to Use Help"
2 s1 "Find a topic"
2 s1 "Get more out of help"
1 s2 "Register Your Software"
2 s1 "Registering Windows 98 online"
1 s2 "What's New in Windows 98"
2 s1 "Innovative, easy-to-use features"
2 s1 "Improved reliability"
2 s1 "A faster operating system"
2 s1 "True Web integration"
2 s1 "More entertaining and fun"
1 s2 "If You're New to Windows 98"
2 s2 "Tips for Macintosh Users"
3 s1 "Why does the mouse have two buttons?"
} {
set item [$T item create]
$T item style set $item 0 $style
$T item element configure $item 0 e3 -text $text
$T item collapse $item
$T item lastchild [lindex $parentList $depth] $item
incr depth
set parentList [lreplace $parentList $depth $depth $item]
}
bind TreeCtrlHelp <Double-ButtonPress-1> {
if {[lindex [%W identify %x %y] 0] eq "header"} {
TreeCtrl::DoubleButton1 %W %x %y
} else {
TreeCtrl::HelpButton1 %W %x %y
}
break
}
bind TreeCtrlHelp <ButtonPress-1> {
TreeCtrl::HelpButton1 %W %x %y
break
}
bind TreeCtrlHelp <Button1-Motion> {
# noop
}
bind TreeCtrlHelp <Button1-Leave> {
# noop
}
bind TreeCtrlHelp <Motion> {
TreeCtrl::HelpMotion_2 %W %x %y
}
bind TreeCtrlHelp <Leave> {
TreeCtrl::HelpMotion_2 %W %x %y
}
bind TreeCtrlHelp <KeyPress-Return> {
if {[llength [%W selection get]] == 1} {
%W item toggle [lindex [%W selection get] 0]
}
break
}
set ::TreeCtrl::Priv(help,prev) ""
bindtags $T [list $T TreeCtrlHelp TreeCtrl [winfo toplevel $T] all]
return
}
proc TreeCtrl::HelpButton1 {w x y} {
variable Priv
focus $w
set id [$w identify $x $y]
set Priv(buttonMode) ""
if {[lindex $id 0] eq "header"} {
ButtonPress1 $w $x $y
} elseif {[lindex $id 0] eq "item"} {
set item [lindex $id 1]
# didn't click an element
if {[llength $id] != 6} return
if {[$w selection includes $item]} {
$w item toggle $item
return
}
if {[llength [$w selection get]]} {
set item2 [lindex [$w selection get] 0]
$w item collapse $item2
foreach item2 [$w item ancestors $item2] {
if {[$w compare $item != $item2]} {
$w item collapse $item2
}
}
}
$w activate $item
foreach item2 [$w item ancestors $item] {
$w item expand $item2
}
$w item toggle $item
$w selection modify $item all
}
return
}
proc TreeCtrl::HelpMotion {w x y} {
variable Priv
set id [$w identify $x $y]
if {$id eq ""} {
} elseif {[lindex $id 0] eq "header"} {
} elseif {[lindex $id 0] eq "item"} {
set item [lindex $id 1]
if {[llength $id] == 6} {
if {$item ne $Priv(help,prev)} {
if {$Priv(help,prev) ne ""} {
$w item state set $Priv(help,prev) !mouseover
}
$w item state set $item mouseover
set Priv(help,prev) $item
}
return
}
}
if {$Priv(help,prev) ne ""} {
$w item state set $Priv(help,prev) !mouseover
set Priv(help,prev) ""
}
return
}
# Alternate implementation that does not rely on run-time states
proc TreeCtrl::HelpMotion_2 {w x y} {
variable Priv
set id [$w identify $x $y]
if {[lindex $id 0] eq "header"} {
} elseif {$id ne ""} {
set item [lindex $id 1]
if {[llength $id] == 6} {
if {$item ne $Priv(help,prev)} {
if {$Priv(help,prev) ne ""} {
set style [$w item style set $Priv(help,prev) 0]
set style [string trim $style .f]
$w item style map $Priv(help,prev) 0 $style {e5 e3}
}
set style [$w item style set $item 0]
$w item style map $item 0 $style.f {e3 e5}
set Priv(help,prev) $item
}
return
}
}
if {$Priv(help,prev) ne ""} {
set style [$w item style set $Priv(help,prev) 0]
set style [string trim $style .f]
$w item style map $Priv(help,prev) 0 $style {e5 e3}
set Priv(help,prev) ""
}
return
}
|
