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|
package require snit
snit::widgetadaptor pixmapcheckbutton {
typevariable widgetlist
typevariable loadimagecommand
typevariable blank
typevariable normal
typevariable hover
typevariable disabled
typevariable normalpress
typevariable hoverpress
typevariable disabledpress
variable selected
option -activeforeground -configuremethod SetActiveForeground
option -activefg -configuremethod SetActiveForeground
option -command
option -font -configuremethod SetFont
option -foreground -configuremethod SetForeground
option -fg -configuremethod SetForeground
option -indicatoron -default 1 -configuremethod SetIndicatorOn
option -offvalue
option -onvalue
option -selected
option -state -default normal -configuremethod SetState
option -takefocus -default 1
option -text -configuremethod SetText
option -variable
typeconstructor {
$type SetImageCommand "$type loadimage"
$type reloadimages 1
}
constructor { args } {
lappend widgetlist $self
installhull using canvas -bg white -relief flat -highlightthickness 0
$hull create image 0 0 -image $normal -activeimage $hover -disabledimage $disabled -anchor nw -tag button
$hull create text 0 0 -anchor w -tag label
$hull coords label [image width $normal] [expr [image height $normal] / 2]
set selected "no"
$self configurelist $args
$self SetState -state $options(-state)
$self configure -selected "no"
$self UpdateVariable 0
$hull configure -width [expr [$self MeasureText $options(-text) w] + [image width $normal]]
set ih [image height $normal]
set th [$self MeasureText $options(-text) h]
if { $ih > $th } {
$hull configure -height $ih
} else {
$hull configure -height $th
}
bind $self <Enter> "$self ButtonHovered"
bind $self <Leave> "$self ButtonUnhovered"
bind $self <Button-1> "$self toggle"
bind $self <KeyPress-space> "$self toggle"
bind $self <KeyPress-plus> "$self select"
bind $self <KeyPress-equal> "$self select"
bind $self <KeyPress-minus> "$self deselect"
}
#////////////////////////////////////////////////////////////////
# PUBLIC COMMANDS /
# deselect /
# flash /
# invoke /
# select /
# toggle /
#////////////////////////////////////////////////////////////////
method toggle { } {
if { $options(-state) != "disabled" } {
switch $options(-selected) {
no {
$self select
}
yes {
$self deselect
}
}
}
}
method invoke { } {
if { $options(-state) != "disabled" } {
eval $options(-command)
}
}
method flash { } {
if { $options(-state) != "disabled" } {
after 250 $self toggle
after 500 $self toggle
after 750 $self toggle
after 1000 $self toggle
}
}
method select { } {
$self configure -selected "yes"
if { $options(-state) != "disabled" } {
if { $options(-variable) != "" } {
$self UpdateVariable $options(-onvalue)
}
$hull itemconfigure button -image $normalpress -disabledimage $disabledpress
$self invoke
}
}
method deselect { } {
$self configure -selected "no"
if { $options(-state) != "disabled" } {
if { $options(-variable) != "" } {
$self UpdateVariable $options(-offvalue)
}
$hull itemconfigure button -image $normal -disabledimage $disabled
}
}
#////////////////////////////////////////////////////////
# PRIVATE COMMANDS /
#////////////////////////////////////////////////////////
method ButtonHovered { } {
if { $options(-state) != "disabled" } {
if { $options(-selected) == "yes" } {
$hull itemconfigure button -image $hoverpress
} else {
$hull itemconfigure button -image $hover
}
}
}
method ButtonUnhovered { } {
if { $options(-state) != "disabled" } {
if { $options(-selected) == "yes" } {
$hull itemconfigure button -image $normalpress
} else {
$hull itemconfigure button -image $normal
}
}
}
method SetFont { option value } {
set options(-font) $value
$hull itemconfigure label -font $value
}
method SetActiveForeground { option value } {
set options(-activeforeground) $value
set options(-activefg) $value
$hull itemconfigure label -activefill $value
}
method SetForeground { option value } {
set options(-foreground) $value
set options(-fg) $value
$hull itemconfigure label -fill $value
}
method SetIndicatorOn { option value } {
set options(-indicatoron) $value
if { !$value } {
$hull delete button
$hull coords label 0 [expr [image height $normal] / 2]
} else {
switch $options(-selected) {
yes {
$hull create image 0 0 -image $normalpress -disabledimage $disabledpress -anchor nw -tag button
}
no {
$hull create image 0 0 -image $normal -disabledimage $disabled -anchor nw -tag button
}
}
$hull coords label [image width $normal] [expr [image height $normal] / 2]
switch $options(-state) {
disabled { $hull itemconfigure button -state disabled }
default { $hull itemconfigure button -state normal }
}
}
}
method SetState { option value } {
set options(-state) $value
switch $value {
normal {
switch $options(-selected) {
yes { $hull itemconfigure button -image $normalpress }
no { $hull itemconfigure button -image $normal }
}
}
active {
switch $options(-selected) {
yes { $hull itemconfigure button -image $hoverpress }
no { $hull itemconfigure button -image $hover }
}
}
disabled {
$hull itemconfigure button -state disabled
}
}
}
method SetText { option value } {
set options(-text) $value
$hull itemconfigure label -text $value
$hull configure -width [expr [$self MeasureText $options(-text) w] + [image width $normal]]
set ih [image height $normal]
set th [$self MeasureText $options(-text) h]
if { $ih > $th } {
$hull configure -height $ih
} else {
$hull configure -height $th
}
}
method UpdateVariable { value } {
uplevel #0 "set $options(-variable) $value"
}
method MeasureText { text dimension } {
if { $dimension == "w" } {
if { $options(-font) != "" } {
set idx [expr [string first "\n" $text] - 1]
if { $idx < 0 } { set idx end }
set m [font measure $options(-font) -displayof $self [string range $text \
0 $idx]]
return $m
} else {
set idx [expr [string first "\n" $text] - 1]
if { $idx < 0 } { set idx end }
set f [font create -family helvetica -size 12 -weight normal]
set m [font measure $f -displayof $self [string range $text \
0 $idx]]
font delete $f
return $m
}
} elseif { $dimension == "h" } {
if { $options(-font) != "" } {
#Get number of lines
set n [$self NumberLines $text]
#Multiply font size by no. lines and add gap between lines * (no. lines - 1).
return [expr $n * [font configure $options(-font) -size] + (($n - 1) * 7)]
} else {
#Get number of lines
set n [$self NumberLines $text]
#Multiply font size by no. lines and add gap between lines * (no. lines - 1).
return [expr ($n * 12) + (($n - 1) * 7)]
}
}
}
method NumberLines { string } {
for { set n 0; set idx 0 } { [string first "\n" $string $idx] != -1} { incr n 1 } {
set idx [expr [string first "\n" $string $idx] +1]
}
if { $n < 1 } { set n 1 }
return $n
}
#/////////////////////////////////////////////////////
#/////////////////////////////////////////////////////
# Image (re)loading methods
#
#
#
#/////////////////////////////////////////////////////
typemethod loadimage { imagename } {
return [image create photo -file $imagename.gif]
}
typemethod SetImageCommand { command } {
set loadimagecommand $command
}
typemethod reloadimages { init } {
set normal [eval "$loadimagecommand check"]
set hover [eval "$loadimagecommand checkhover"]
set disabled [eval "$loadimagecommand checkdisabled"]
set normalpress [eval "$loadimagecommand checkpress"]
set hoverpress [eval "$loadimagecommand checkhoverpress"]
set disabledpress [eval "$loadimagecommand checkdisabledpress"]
if { !$init } {
foreach widget $widgetlist {
if { [$widget cget -selected] == "no" } {
::hull1$widget itemconfigure button -image $normal -disabledimage $disabled
} else {
::hull1$widget itemconfigure button -image $normalpress -disabledimage $disabledpress
}
$widget configure -width [expr [$widget MeasureText [$widget cget -text] w] + [image width $normal]]
set ih [image height $normal]
set th [$self MeasureText $options(-text) h]
if { $ih > $th } {
$hull configure -height $ih
} else {
$hull configure -height $th
}
}
}
}
}
|
