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BWidget-1.2
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label.tcl
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2000-11-02
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# ------------------------------------------------------------------------------
# label.tcl
# This file is part of Unifix BWidget Toolkit
# $Id: label.tcl,v 1.2 1996/03/21 06:37:18 daniel Exp $
# ------------------------------------------------------------------------------
# Index of commands:
# - Label::create
# - Label::configure
# - Label::cget
# - Label::setfocus
# - Label::_drag_cmd
# - Label::_drop_cmd
# - Label::_over_cmd
# ------------------------------------------------------------------------------
namespace eval Label {
Widget::tkinclude Label label :cmd \
remove {-foreground -text -textvariable -underline}
Widget::declare Label {
{-name String "" 0}
{-text String "" 0}
{-textvariable String "" 0}
{-underline Int -1 0 {=-1}}
{-focus String "" 0}
{-foreground TkResource "" 0 label}
{-disabledforeground TkResource "" 0 button}
{-state Enum normal 0 {normal disabled}}
{-fg Synonym -foreground}
}
DynamicHelp::include Label balloon
DragSite::include Label "" 1
DropSite::include Label {
TEXT {move {}}
IMAGE {move {}}
BITMAP {move {}}
FGCOLOR {move {}}
BGCOLOR {move {}}
COLOR {move {}}
}
Widget::syncoptions Label "" :cmd {-text {} -underline {}}
proc ::Label { path args } { return [eval Label::create $path $args] }
proc use {} {}
bind BwLabel <FocusIn> {Label::setfocus %W}
bind BwLabel <Destroy> {Widget::destroy %W; rename %W {}}
}
# ------------------------------------------------------------------------------
# Command Label::create
# ------------------------------------------------------------------------------
proc Label::create { path args } {
Widget::init Label $path $args
if { [Widget::getoption $path -state] == "normal" } {
set fg [Widget::getoption $path -foreground]
} else {
# XXX: Disabled labels still should look enabled. See also some procs below
#set fg [Widget::getoption $path -disabledforeground]
set fg [Widget::getoption $path -foreground]
}
set var [Widget::getoption $path -textvariable]
if { $var == "" &&
[Widget::getoption $path -image] == "" &&
[Widget::getoption $path -bitmap] == ""} {
set desc [BWidget::getname [Widget::getoption $path -name]]
if { $desc != "" } {
set text [lindex $desc 0]
set under [lindex $desc 1]
} else {
set text [Widget::getoption $path -text]
set under [Widget::getoption $path -underline]
}
} else {
set under -1
set text ""
}
eval label $path [Widget::subcget $path :cmd] \
[list -text $text -textvariable $var -underline $under -foreground $fg]
set accel [string tolower [string index $text $under]]
if { $accel != "" } {
bind [winfo toplevel $path] <Alt-$accel> "Label::setfocus $path"
}
bindtags $path [list $path Label BwLabel [winfo toplevel $path] all]
DragSite::setdrag $path $path Label::_init_drag_cmd [Widget::getoption $path -dragendcmd] 1
DropSite::setdrop $path $path Label::_over_cmd Label::_drop_cmd 1
DynamicHelp::sethelp $path $path 1
rename $path ::$path:cmd
proc ::$path { cmd args } "return \[eval Label::\$cmd $path \$args\]"
return $path
}
# ------------------------------------------------------------------------------
# Command Label::configure
# ------------------------------------------------------------------------------
proc Label::configure { path args } {
set oldunder [$path:cmd cget -underline]
if { $oldunder != -1 } {
set oldaccel [string tolower [string index [$path:cmd cget -text] $oldunder]]
} else {
set oldaccel ""
}
set res [Widget::configure $path $args]
set cfg [Widget::hasChanged $path -foreground fg]
set cdfg [Widget::hasChanged $path -disabledforeground dfg]
set cst [Widget::hasChanged $path -state state]
if { $cst || $cfg || $cdfg } {
if { $state == "normal" } {
$path:cmd configure -fg $fg
} else {
# XXX
$path:cmd configure -fg $fg
# $path:cmd configure -fg $dfg
}
}
set cv [Widget::hasChanged $path -textvariable var]
set cb [Widget::hasChanged $path -image img]
set ci [Widget::hasChanged $path -bitmap bmp]
set cn [Widget::hasChanged $path -name name]
set ct [Widget::hasChanged $path -text text]
set cu [Widget::hasChanged $path -underline under]
if { $cv || $cb || $ci || $cn || $ct || $cu } {
if { $var == "" && $img == "" && $bmp == "" } {
set desc [BWidget::getname $name]
if { $desc != "" } {
set text [lindex $desc 0]
set under [lindex $desc 1]
}
} else {
set under -1
set text ""
}
set top [winfo toplevel $path]
if { $oldaccel != "" } {
bind $top <Alt-$oldaccel> {}
}
set accel [string tolower [string index $text $under]]
if { $accel != "" } {
bind $top <Alt-$accel> "Label::setfocus $path"
}
$path:cmd configure -text $text -underline $under -textvariable $var
}
set force [Widget::hasChanged $path -dragendcmd dragend]
DragSite::setdrag $path $path Label::_init_drag_cmd $dragend $force
DropSite::setdrop $path $path Label::_over_cmd Label::_drop_cmd
DynamicHelp::sethelp $path $path
return $res
}
# ------------------------------------------------------------------------------
# Command Label::cget
# ------------------------------------------------------------------------------
proc Label::cget { path option } {
return [Widget::cget $path $option]
}
# ------------------------------------------------------------------------------
# Command Label::setfocus
# ------------------------------------------------------------------------------
proc Label::setfocus { path } {
if { ![string compare [Widget::getoption $path -state] "normal"] } {
set w [Widget::getoption $path -focus]
if { [winfo exists $w] && [Widget::focusOK $w] } {
focus $w
}
}
}
# ------------------------------------------------------------------------------
# Command Label::_init_drag_cmd
# ------------------------------------------------------------------------------
proc Label::_init_drag_cmd { path X Y top } {
if { [set cmd [Widget::getoption $path -draginitcmd]] != "" } {
return [uplevel \#0 $cmd [list $path $X $Y $top]]
}
if { [set data [$path:cmd cget -image]] != "" } {
set type "IMAGE"
pack [label $top.l -image $data]
} elseif { [set data [$path:cmd cget -bitmap]] != "" } {
set type "BITMAP"
pack [label $top.l -bitmap $data]
} else {
set data [$path:cmd cget -text]
set type "TEXT"
}
set usertype [Widget::getoption $path -dragtype]
if { $usertype != "" } {
set type $usertype
}
return [list $type {copy} $data]
}
# ------------------------------------------------------------------------------
# Command Label::_drop_cmd
# ------------------------------------------------------------------------------
proc Label::_drop_cmd { path source X Y op type data } {
if { [set cmd [Widget::getoption $path -dropcmd]] != "" } {
return [uplevel \#0 $cmd [list $path $source $X $Y $op $type $data]]
}
if { $type == "COLOR" || $type == "FGCOLOR" } {
configure $path -foreground $data
} elseif { $type == "BGCOLOR" } {
configure $path -background $data
} else {
set text ""
set image ""
set bitmap ""
switch -- $type {
IMAGE {set image $data}
BITMAP {set bitmap $data}
default {
set text $data
if { [set var [$path:cmd cget -textvariable]] != "" } {
configure $path -image "" -bitmap ""
GlobalVar::setvar $var $data
return
}
}
}
configure $path -text $text -image $image -bitmap $bitmap
}
return 1
}
# ------------------------------------------------------------------------------
# Command Label::_over_cmd
# ------------------------------------------------------------------------------
proc Label::_over_cmd { path source event X Y op type data } {
if { [set cmd [Widget::getoption $path -dropovercmd]] != "" } {
return [uplevel \#0 $cmd [list $path $source $event $X $Y $op $type $data]]
}
if { [Widget::getoption $path -state] == "normal" ||
$type == "COLOR" || $type == "FGCOLOR" || $type == "BGCOLOR" } {
DropSite::setcursor based_arrow_down
return 1
}
DropSite::setcursor dot
return 0
}