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BWidget-1.2
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font.tcl
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# ------------------------------------------------------------------------------
# font.tcl
# This file is part of Unifix BWidget Toolkit
# ------------------------------------------------------------------------------
# Index of commands:
# - SelectFont::create
# - SelectFont::configure
# - SelectFont::cget
# - SelectFont::_draw
# - SelectFont::_destroy
# - SelectFont::_modstyle
# - SelectFont::_update
# - SelectFont::_getfont
# - SelectFont::_init
# ------------------------------------------------------------------------------
namespace eval SelectFont {
Dialog::use
LabelFrame::use
ScrolledWindow::use
Widget::declare SelectFont {
{-title String "Font selection" 0}
{-parent String "" 0}
{-background TkResource "" 0 frame}
{-type Enum dialog 0 {dialog toolbar}}
{-font TkResource "" 0 label}
{-command String "" 0}
{-sampletext String "Sample Text" 0}
{-bg Synonym -background}
}
proc ::SelectFont { path args } { return [eval SelectFont::create $path $args] }
proc use {} {}
variable _families
variable _styles {bold italic underline overstrike}
variable _sizes {4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24}
variable _widget
}
# ------------------------------------------------------------------------------
# Command SelectFont::create
# ------------------------------------------------------------------------------
proc SelectFont::create { path args } {
variable _families
variable _sizes
variable _styles
variable $path
upvar 0 $path data
if { ![info exists _families] } {
loadfont
}
Widget::init SelectFont "$path#SelectFont" $args
set bg [Widget::getoption "$path#SelectFont" -background]
if { [Widget::getoption "$path#SelectFont" -type] == "dialog" } {
Dialog::create $path -modal local -default 0 -cancel 1 -background $bg \
-title [Widget::getoption "$path#SelectFont" -title] \
-parent [Widget::getoption "$path#SelectFont" -parent]
set frame [Dialog::getframe $path]
set topf [frame $frame.topf -relief flat -borderwidth 0 -background $bg]
set labf1 [LabelFrame::create $topf.labf1 -text "Font" -name font \
-side top -anchor w -relief flat -background $bg]
set sw [ScrolledWindow::create [LabelFrame::getframe $labf1].sw \
-background $bg]
set lbf [listbox $sw.lb \
-height 5 -width 25 -exportselection false -selectmode browse]
ScrolledWindow::setwidget $sw $lbf
LabelFrame::configure $labf1 -focus $lbf
eval $lbf insert end $_families
set script "set SelectFont::$path\(family\) \[%W curselection\]; SelectFont::_update $path"
bind $lbf <ButtonRelease-1> $script
bind $lbf <space> $script
pack $sw -fill both -expand yes
set labf2 [LabelFrame::create $topf.labf2 -text "Size" -name size \
-side top -anchor w -relief flat -background $bg]
set sw [ScrolledWindow::create [LabelFrame::getframe $labf2].sw \
-scrollbar vertical -background $bg]
set lbs [listbox $sw.lb \
-height 5 -width 6 -exportselection false -selectmode browse]
ScrolledWindow::setwidget $sw $lbs
LabelFrame::configure $labf2 -focus $lbs
eval $lbs insert end $_sizes
set script "set SelectFont::$path\(size\) \[%W curselection\]; SelectFont::_update $path"
bind $lbs <ButtonRelease-1> $script
bind $lbs <space> $script
pack $sw -fill both -expand yes
set labf3 [LabelFrame::create $topf.labf3 -text "Style" -name style \
-side top -anchor w -relief sunken -bd 1 -background $bg]
set subf [LabelFrame::getframe $labf3]
foreach st $_styles {
set name [lindex [BWidget::getname $st] 0]
if { $name == "" } {
set name "[string toupper [string index $name 0]][string range $name 1 end]"
}
checkbutton $subf.$st -text $name \
-variable SelectFont::$path\($st\) \
-background $bg \
-command "SelectFont::_update $path"
bind $subf.$st <Return> break
pack $subf.$st -anchor w
}
LabelFrame::configure $labf3 -focus $subf.[lindex $_styles 0]
pack $labf1 -side left -anchor n -fill both -expand yes
pack $labf2 -side left -anchor n -fill both -expand yes -padx 8
pack $labf3 -side left -anchor n -fill both -expand yes
set botf [frame $frame.botf -width 100 -height 50 \
-bg white -bd 0 -relief flat \
-highlightthickness 1 -takefocus 0 \
-highlightbackground black \
-highlightcolor black]
set lab [label $botf.label \
-background white -foreground black \
-borderwidth 0 -takefocus 0 -highlightthickness 0 \
-text [Widget::getoption "$path#SelectFont" -sampletext]]
place $lab -relx 0.5 -rely 0.5 -anchor c
pack $topf -pady 4 -fill both -expand yes
pack $botf -pady 4 -fill x
Dialog::add $path -name ok
Dialog::add $path -name cancel
set data(label) $lab
set data(lbf) $lbf
set data(lbs) $lbs
_getfont $path
proc ::$path { cmd args } "return \[eval SelectFont::\$cmd $path \$args\]"
return [_draw $path]
} else {
frame $path -relief flat -borderwidth 0 -background $bg
bind $path <Destroy> "SelectFont::_destroy $path"
set lbf [ComboBox::create $path.font \
-highlightthickness 0 -takefocus 0 -background $bg \
-values $_families \
-textvariable SelectFont::$path\(family\) \
-editable 0 \
-modifycmd "SelectFont::_update $path"]
set lbs [ComboBox::create $path.size \
-highlightthickness 0 -takefocus 0 -background $bg \
-width 4 \
-values $_sizes \
-textvariable SelectFont::$path\(size\) \
-editable 0 \
-modifycmd "SelectFont::_update $path"]
pack $lbf -side left -anchor w
pack $lbs -side left -anchor w -padx 4
foreach st $_styles {
button $path.$st \
-highlightthickness 0 -takefocus 0 -padx 0 -pady 0 -bd 2 \
-background $bg \
-image [Bitmap::get $st] \
-command "SelectFont::_modstyle $path $st"
pack $path.$st -side left -anchor w
}
set data(label) ""
set data(lbf) $lbf
set data(lbs) $lbs
_getfont $path
rename $path ::$path:cmd
proc ::$path { cmd args } "return \[eval SelectFont::\$cmd $path \$args\]"
}
return $path
}
# ------------------------------------------------------------------------------
# Command SelectFont::configure
# ------------------------------------------------------------------------------
proc SelectFont::configure { path args } {
variable _styles
set res [Widget::configure "$path#SelectFont" $args]
if { [Widget::hasChanged "$path#SelectFont" -font font] } {
_getfont $path
}
if { [Widget::hasChanged "$path#SelectFont" -background bg] } {
switch -- [Widget::getoption "$path#SelectFont" -type] {
dialog {
Dialog::configure $path -background $bg
set topf [Dialog::getframe $path].topf
$topf configure -background $bg
foreach labf {labf1 labf2} {
LabelFrame::configure $topf.$labf -background $bg
set subf [LabelFrame::getframe $topf.$labf]
ScrolledWindow::configure $subf.sw -background $bg
$subf.sw.lb configure -background $bg
}
LabelFrame::configure $topf.labf3 -background $bg
set subf [LabelFrame::getframe $topf.labf3]
foreach w [winfo children $subf] {
$w configure -background $bg
}
}
toolbar {
$path configure -background $bg
ComboBox::configure $path.font -background $bg
ComboBox::configure $path.size -background $bg
foreach st $_styles {
$path.$st configure -background $bg
}
}
}
}
return $res
}
# ------------------------------------------------------------------------------
# Command SelectFont::cget
# ------------------------------------------------------------------------------
proc SelectFont::cget { path option } {
return [Widget::cget "$path#SelectFont" $option]
}
# ------------------------------------------------------------------------------
# Command SelectFont::loadfont
# ------------------------------------------------------------------------------
proc SelectFont::loadfont { } {
variable _families
# initialize families
set _families {}
set lfont [font families]
lappend lfont times courier helvetica
foreach font $lfont {
set family [font actual [list $font] -family]
if { [lsearch -exact $_families $family] == -1 } {
lappend _families $family
}
}
set _families [lsort $_families]
}
# ------------------------------------------------------------------------------
# Command SelectFont::_draw
# ------------------------------------------------------------------------------
proc SelectFont::_draw { path } {
variable $path
upvar 0 $path data
$data(lbf) selection clear 0 end
$data(lbf) selection set $data(family)
$data(lbf) activate $data(family)
$data(lbf) see $data(family)
$data(lbs) selection clear 0 end
$data(lbs) selection set $data(size)
$data(lbs) activate $data(size)
$data(lbs) see $data(size)
_update $path
if { [Dialog::draw $path] == 0 } {
set result [Widget::getoption "$path#SelectFont" -font]
} else {
set result ""
}
unset data
Widget::destroy "$path#SelectFont"
destroy $path
return $result
}
# ------------------------------------------------------------------------------
# Command SelectFont::_destroy
# ------------------------------------------------------------------------------
proc SelectFont::_destroy { path } {
variable $path
upvar 0 $path data
unset data
Widget::destroy "$path#SelectFont"
rename $path {}
}
# ------------------------------------------------------------------------------
# Command SelectFont::_modstyle
# ------------------------------------------------------------------------------
proc SelectFont::_modstyle { path style } {
variable $path
upvar 0 $path data
if { $data($style) == 1 } {
$path.$style configure -relief raised
set data($style) 0
} else {
$path.$style configure -relief sunken
set data($style) 1
}
_update $path
}
# ------------------------------------------------------------------------------
# Command SelectFont::_update
# ------------------------------------------------------------------------------
proc SelectFont::_update { path } {
variable _families
variable _sizes
variable _styles
variable $path
upvar 0 $path data
set type [Widget::getoption "$path#SelectFont" -type]
if { $type == "dialog" } {
set curs [$path:cmd cget -cursor]
$path:cmd configure -cursor watch
}
if { [Widget::getoption "$path#SelectFont" -type] == "dialog" } {
set font [list \
[lindex $_families $data(family)] \
[lindex $_sizes $data(size)]]
} else {
set font [list $data(family) $data(size)]
}
foreach st $_styles {
if { $data($st) } {
lappend font $st
}
}
Widget::setoption "$path#SelectFont" -font $font
if { $type == "dialog" } {
$data(label) configure -font $font
$path:cmd configure -cursor $curs
} elseif { [set cmd [Widget::getoption "$path#SelectFont" -command]] != "" } {
uplevel \#0 $cmd
}
}
# ------------------------------------------------------------------------------
# Command SelectFont::_getfont
# ------------------------------------------------------------------------------
proc SelectFont::_getfont { path } {
variable _families
variable _styles
variable _sizes
variable $path
upvar 0 $path data
array set font [font actual [Widget::getoption "$path#SelectFont" -font]]
set data(bold) [expr {[string compare $font(-weight) "normal"] != 0}]
set data(italic) [expr {[string compare $font(-slant) "roman"] != 0}]
set data(underline) $font(-underline)
set data(overstrike) $font(-overstrike)
if { [Widget::getoption "$path#SelectFont" -type] == "dialog" } {
set idxf [lsearch $_families $font(-family)]
set idxs [lsearch $_sizes $font(-size)]
set data(family) [expr {$idxf >= 0 ? $idxf : 0}]
set data(size) [expr {$idxs >= 0 ? $idxs : 0}]
} else {
set data(family) $font(-family)
set data(size) $font(-size)
foreach st $_styles {
$path.$st configure -relief [expr {$data($st) ? "sunken":"raised"}]
}
}
}