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|
###############################
#
# a pure Tcl/Tk font chooser
#
# by ulis, 2002
#
# NOL (No Obligation Licence)
#
#
# modifs by Martin Lemburg, 2002
# Basic Tile'ification and msgcat support
# by schlenk, 2005
#
# Adaptation to R and further enhancements
# by Philippe Grosjean, 2007, GNU GPL 2 or above license
###############################
package require Tcl 8.4
package require Tk 8.4
package require msgcat
#package require tile 0.7.2 ;# The dialog displays tile widgets if package loaded
namespace eval ::choosefont {
namespace import ::msgcat::mc
namespace export choosefont
variable w .choosefont
variable font
variable listvar
variable family
variable size
variable bold
variable italic
variable underline
variable overstrike
variable ok
variable lock 1
variable defaultopts
variable usetile
variable locale
set usetile 0
set locale [::msgcat::mclocale]
variable mnemonics
variable mnemopaths
set mnemonics {}
set mnemopaths {}
# Get internationalization string
::msgcat::mcload [file join [file dirname [info script]] msgs]
# This is for correct handling of amperstand as mnemonic indicators (Alt-Key)
proc mca {widget text} {
variable mnemonics
variable mnemopaths
foreach {newtext under} [::tk::UnderlineAmpersand [mc $text]] {
$widget configure -text $newtext -underline $under
}
# Add this info to the list of mnemonics
if {$under > -1} {
lappend mnemonics [string tolower [string index $newtext $under]]
lappend mnemopaths $widget
}
}
# This font is inspired from tile
# Make sure that TkDefaultFont is defined
if {[lsearch [font names] TkDefaultFont] == -1} {
catch {font create TkDefaultFont}
switch -- [tk windowingsystem] {
win32 {
if {$tcl_platform(osVersion) >= 5.0} {
font configure TkDefaultFont -family "Tahoma" -size -11
} else {
font configure TkDefaultFont -family "MS Sans Serif" -size -11
}
}
classic -
aqua {
font configure TkDefaultFont -family "Lucida Grande" -size 13
}
x11 {
if {![catch {tk::pkgconfig get fontsystem} fs] && $fs eq "xft"} {
font configure TkDefaultFont -family "sans-serif" -size -12
} else {
font configure TkDefaultFont -family "Helvetica" -size -12
}
}
}
}
# ================
# choose a font
# ================
# args:
# -font an initial (and optional) font
# -title an optional title
# -fonttype 'all' (by default), 'fixed' or 'prop'
# -style do we activate additional 'style' options?
# >= 1 => 'bold'
# >= 2 => 'italic'
# >= 3 => 'underline'
# >= 4 => 'overstrike'
# -sizetype 'all' (by default), 'point', 'pixel'
# returns:
# "" if the user aborted
# or the description of the selected font
# usage:
# namespace import ::choosefont::choosefont
# choosefont "Courier 10 italic" "new font"
proc choosefont {args} {
if {[llength $args] & 1} {
return -code error "invalid number of arguments given to choosefont (uneven number) : $args"
}
global tcl_platform
global tile_use
# ------------------
# get choosefont env
# ------------------
variable ::choosefont::w
variable ::choosefont::font
variable ::choosefont::listvarall
variable ::choosefont::listvarfixed
variable ::choosefont::listvarprop
variable ::choosefont::listvar
variable ::choosefont::family
variable ::choosefont::size
variable ::choosefont::bold
variable ::choosefont::italic
variable ::choosefont::underline
variable ::choosefont::overstrike
variable ::choosefont::ok
variable ::choosefont::usetile
variable ::choosefont::locale
variable ::choosefont::mnemonics
variable ::choosefont::mnempaths
variable ::choosefont::lock
# ------------------
# handling of optional arguments
# ------------------
variable ::choosefont::defaultopts
variable opts
# Initialize de fault fonts (done only once)
if {![info exists defaultopts]} {
set defaultopts {-font "" -title "" -fonttype all -style 4 -sizetype all}
}
# Create an array (easier to work with)
array set opts $defaultopts
# Override options provided as arguments
array set opts $args
# ------------------
# current font
# ------------------
if {$opts(-font) != ""} { set font $opts(-font) }
if {![info exists font]} {
# We try to get the default text or fixed font, depending on fonttype
if {$opts(-fonttype) == "fixed"} {
catch { set font [font actual TkFixedFont] }
} else { ;# 'all' or 'prop'
catch { set font [font actual TkTextFont] }
}
}
# Make sure that the default one is correct regarding 'fixed' or 'prop'
# Otherwise, select default fonts instead
if {$opts(-fonttype) == "fixed" & [font metrics $font -fixed] == 0 } {
catch { set font "courier" }
}
if {$opts(-fonttype) == "prop" & [font metrics $font -fixed] == 1 } {
catch { set font "helvetica" }
}
# ------------------
# dialog
# ------------------
set notile [catch { package present tile }]
catch {if {[winfo exists $tile_use] && $tile_use == 0} {set notile 1}}
# If it is not the first time the dialog is displayed
# and tile presence, or locale has changed
# then, we destroy the dialog box and rebuild it
if {[winfo exists $w]} {
if {$notile != $usetile || [::msgcat::mclocale] != $locale} {
destroy $w
set mnemonics {}
set mnemopaths {}
}
}
set usetile $notile
set locale [::msgcat::mclocale]
if {[winfo exists $w]} {
# show the dialog
wm deiconify $w
# Switch to the corresponding list of fonts ('all', 'prop' or 'fixed')
switch -exact -- [string tolower $opts(-fonttype)] {
fixed { set listvar $listvarfixed }
prop { set listvar $listvarprop }
default { set listvar $listvarall }
}
# Possibly reconfigure the size selector
if {$notile} {
switch $opts(-sizetype) {
point {
set minsize 1; set maxsize 100
}
pixel {
set minsize -100; set maxsize -1
}
default {
set minsize -100; set maxsize 100
}
}
$w.fa.f.esize configure -from $minsize -to $maxsize
} else {
switch $opts(-sizetype) {
point {
$w.fa.f.esize configure -values [list 7 8 9 10 11 12 13 14 15 \
20 25 30 40]
}
pixel {
$w.fa.f.esize configure -values [list -20 -15 -14 -13 -12 -11 \
-10 -9 -8]
}
default {
$w.fa.f.esize configure -values [list -20 -15 -14 -13 -12 -11 \
-10 -9 -8 7 8 9 10 11 12 13 14 15 20 25 30 40]
}
}
}
} else { ;# Create the dialog box
if {[info exists listvarall] == 0} {
set listvarall [lsort -dictionary [font families]]
#PhG: allow to filter out fixed and/or proportional fonts
set listvarfixed {}
set listvarprop {}
foreach family $listvarall {
if {[font metrics "{$family}" -fixed] == 1 } {
lappend listvarfixed $family
} else {
lappend listvarprop $family
}
}
}
switch -exact -- [string tolower $opts(-fonttype)] {
fixed { set listvar $listvarfixed }
prop { set listvar $listvarprop }
default { set listvar $listvarall }
}
# create the dialog
toplevel $w -class Dialog
wm resizable $w 0 0
wm title $w [mc "Choose a font"]
wm iconname $w Dialog
wm protocol $w WM_DELETE_WINDOW { }
# PhG: under Windows, make it topmost, so that it is always visible
if { [regexp topmost [wm attributes $w]] == 1 } {
wm attributes $w -topmost 1
}
# Dialog boxes should be transient with respect to their parent,
# so that they will always stay on top of their parent window. However,
# some window managers will create the window as withdrawn if the parent
# window is withdrawn or iconified. Combined with the grab we put on the
# window, this can hang the entire application. Therefore we only make
# the dialog transient if the parent is viewable.
if {[winfo viewable [winfo toplevel [winfo parent $w]]] } {
wm transient $w [winfo toplevel [winfo parent $w]]
}
if {[string equal $tcl_platform(platform) "macintosh"]
|| [string equal [tk windowingsystem] "aqua"]} {
::tk::unsupported::MacWindowStyle style $w dBoxProc
}
# create widgets
if {$notile} {
frame $w.f -bd 1 -relief sunken
} else {
ttk::labelframe $w.f
}
# We never use tile for these ones
label $w.f.h -height 4
label $w.f.l -textvariable ::choosefont::family
if {$notile} {
frame $w.fl
label $w.fl.la -font TkDefaultFont
listbox $w.fl.lb -listvar ::choosefont::listvar -width 30 \
-font TkDefaultFont -yscrollcommand [list $w.fl.sb set] \
-selectmode single -exportselection 0
scrollbar $w.fl.sb -command [list $w.fl.lb yview]
} else {
ttk::frame $w.fl
ttk::label $w.fl.la
listbox $w.fl.lb -listvar ::choosefont::listvar -width 30 -bd 0 \
-font TkDefaultFont -yscrollcommand [list $w.fl.sb set] \
-selectmode single -exportselection 0
ttk::scrollbar $w.fl.sb -orient vertical -command [list $w.fl.lb yview]
}
mca $w.fl.la &Family:
if {$notile} {
frame $w.fa -bd 2 -relief groove
frame $w.fa.f
label $w.fa.f.lsize -font TkDefaultFont
switch $opts(-sizetype) {
point {
set minsize 1; set maxsize 100
}
pixel {
set minsize -100; set maxsize -1
}
default {
set minsize -100; set maxsize 100
}
}
spinbox $w.fa.f.esize -textvariable ::choosefont::size -width 3 \
-validate focusout -vcmd {string is integer -strict %P} \
-from $minsize -to $maxsize -font TkDefaultFont
checkbutton $w.fa.f.bold -variable ::choosefont::bold \
-font TkDefaultFont
checkbutton $w.fa.f.italic -variable ::choosefont::italic \
-font TkDefaultFont
checkbutton $w.fa.f.under -variable ::choosefont::underline \
-font TkDefaultFont
checkbutton $w.fa.f.over -variable ::choosefont::overstrike \
-font TkDefaultFont
} else {
ttk::labelframe $w.fa
ttk::frame $w.fa.f
ttk::label $w.fa.f.lsize
ttk::combobox $w.fa.f.esize -textvariable ::choosefont::size \
-width 3 -exportselection 0
switch $opts(-sizetype) {
point {
$w.fa.f.esize configure -values [list 7 8 9 10 11 12 13 14 15 \
20 25 30 40]
}
pixel {
$w.fa.f.esize configure -values [list -20 -15 -14 -13 -12 -11 \
-10 -9 -8]
}
default {
$w.fa.f.esize configure -values [list -20 -15 -14 -13 -12 -11 \
-10 -9 -8 7 8 9 10 11 12 13 14 15 20 25 30 40]
}
}
ttk::checkbutton $w.fa.f.bold -variable ::choosefont::bold
ttk::checkbutton $w.fa.f.italic -variable ::choosefont::italic
ttk::checkbutton $w.fa.f.under -variable ::choosefont::underline
ttk::checkbutton $w.fa.f.over -variable ::choosefont::overstrike
}
mca $w.fa.f.lsize &Size:
mca $w.fa.f.bold &Bold
mca $w.fa.f.italic &Italic
mca $w.fa.f.under &Underline
mca $w.fa.f.over &Overstrike
if {$notile} {
frame $w.fb
button $w.fb.ok -text [mc OK] -width 10 \
-command { set ::choosefont::ok 1 } -font TkDefaultFont
button $w.fb.cancel -text [mc Cancel] -width 10 \
-command { set ::choosefont::ok 0 } -font TkDefaultFont
} else {
ttk::frame $w.fb
ttk::button $w.fb.ok -text [mc OK] -width 10 \
-command { set ::choosefont::ok 1 }
ttk::button $w.fb.cancel -text [mc Cancel] -width 10 \
-command { set ::choosefont::ok 0 }
}
wm protocol $w WM_DELETE_WINDOW { $::choosefont::w.fb.cancel invoke }
# bind events
bind $w.fl.lb <ButtonRelease-1> {
set ::choosefont::family [%W get [%W cursel]]
focus %W
}
# listbox handling
bind $w <Home> { ::choosefont::selectfont %W First }
bind $w <End> { ::choosefont::selectfont %W Last }
bind $w <Control-Home> { ::choosefont::selectfont %W First }
bind $w <Control-End> { ::choosefont::selectfont %W Last }
bind $w <Key-Next> { ::choosefont::selectfont %W PgDown }
bind $w <Key-Prior> { ::choosefont::selectfont %W PgUp }
bind $w <KeyPress> { ::choosefont::selectfont %W %K }
# buttons handling
bind $w <Escape> [list $w.fb.cancel invoke]
bind $w <Return> [list $w.fb.ok invoke]
# Alt-key navigation
if {[llength $mnemonics] > 0} {
bind $w <Alt-Key> {
set w [winfo toplevel %W]
set key [string tolower %K]
set pos [lsearch $::choosefont::mnemonics $key]
if {$pos > -1} {
set target [lindex $::choosefont::mnemopaths $pos]
event generate $target <<AltUnderlined>>
}
}
}
bind $w.fl.la <<AltUnderlined>> [list focus $w.fl.lb]
bind $w.fa.f.lsize <<AltUnderlined>> { focus $w.fa.f.esize }
bind $w.fa.f.bold <<AltUnderlined>> {
$w.fa.f.bold invoke; focus $w.fa.f.bold }
bind $w.fa.f.italic <<AltUnderlined>> {
$w.fa.f.italic invoke; focus $w.fa.f.italic }
bind $w.fa.f.under <<AltUnderlined>> {
$w.fa.f.under invoke; focus $w.fa.f.under }
bind $w.fa.f.over <<AltUnderlined>> {
$w.fa.f.over invoke; focus $w.fa.f.over }
set lock 1
trace variable ::choosefont::family w ::choosefont::createfont
trace variable ::choosefont::size w ::choosefont::createfont
trace variable ::choosefont::bold w ::choosefont::createfont
trace variable ::choosefont::italic w ::choosefont::createfont
trace variable ::choosefont::underline w ::choosefont::createfont
trace variable ::choosefont::overstrike w ::choosefont::createfont
# place widgets
grid $w.f -row 0 -column 0 -columnspan 2 -sticky nsew -pady {2 5}
grid $w.fl -row 1 -column 0 -padx 5 -pady 5
grid $w.fa -row 1 -column 1 -sticky nsew -padx 5 -pady 5
grid $w.fb -row 2 -column 0 -columnspan 2 -sticky ew -pady 7
grid $w.f.h -row 0 -column 0
grid $w.f.l -row 0 -column 1 -sticky nsew -pady 3
grid $w.fl.la -row 0 -column 0 -sticky nw -pady 3
grid $w.fl.lb -row 1 -column 0
grid $w.fl.sb -row 1 -column 1 -sticky ns
grid $w.fa.f -padx 5 -pady 5
grid $w.fa.f.lsize -row 0 -column 0 -padx 5 -pady 10 -sticky w
grid $w.fa.f.esize -row 0 -column 1 -sticky w
grid $w.fa.f.bold -row 1 -column 0 -columnspan 2 -sticky w
grid $w.fa.f.italic -row 2 -column 0 -columnspan 2 -sticky w
grid $w.fa.f.under -row 3 -column 0 -columnspan 2 -sticky w
grid $w.fa.f.over -row 4 -column 0 -columnspan 2 -sticky w
grid $w.fb.ok $w.fb.cancel -padx 20
# Center the Window on screen the first time it is used
::tk::PlaceWindow $w
}
# Reconfigure the dialog box with current font
set family [font actual $font -family]
set size [font actual $font -size]
set bold [expr {[font actual $font -weight] == "bold"}]
if {$opts(-style) > 0} { # Allow bold
$w.fa.f.bold configure -state normal
} else {
$w.fa.f.bold configure -state disabled
}
set italic [expr {[font actual $font -slant] == "italic"}]
if {$opts(-style) > 1} { # Allow italic
$w.fa.f.italic configure -state normal
} else {
$w.fa.f.italic configure -state disabled
}
set underline [font actual $font -underline]
if {$opts(-style) > 2} { # Allow underline
$w.fa.f.under configure -state normal
} else {
$w.fa.f.under configure -state disabled
}
set overstrike [font actual $font -overstrike]
if {$opts(-style) > 3} { # Allow overstrike
$w.fa.f.over configure -state normal
} else {
$w.fa.f.over configure -state disabled
}
set lock 0
::choosefont::createfont
# ------------------
# end of dialog
# ------------------
if {$opts(-title) != ""} {
wm title $w $opts(-title)
} else {
wm title $w [mc "Choose a font"]
}
set newIndex [lsearch -exact $listvar $family]
# PhG: clear the selection list first!
$w.fl.lb selection clear 0 end
# PhG: this is needed by R, otherwise, there is a bug with the list
update
$w.fl.lb selection set $newIndex
$w.fl.lb activate $newIndex
$w.fl.lb see $newIndex
# PhG: focus on the list
focus $w.fl.lb
# Grab the focus, wait for user action
::tk::SetFocusGrab $w $w.fl.lb
vwait ::choosefont::ok
# Restore the focus and hide the font chooser dialog box
::tk::RestoreFocusGrab $w $w.fl.lb withdraw
if {$ok} {
return [::choosefont::createfont]
} else {
return ""
}
}
# ================
# ancillary procs
# ================
proc selectfont {w mode} {
if {[winfo class $w] != "Listbox"} { return }
set oldIndex [$w curselection]
if {[string length $mode] > 1} {
switch -exact -- $mode {
Down {set newIndex [expr {$oldIndex+1}]}
Up {set newIndex [expr {$oldIndex-1}]}
PgDown {set newIndex [expr {$oldIndex+10}]}
PgUp {set newIndex [expr {$oldIndex-10}]}
First {set newIndex 0}
Last {set newIndex end}
default { return }
}
if {($newIndex ne "end") && $newIndex} {
if {$newIndex < 0} {
set newIndex 0
} elseif {$newIndex > [$w size] - 1} {
set newIndex end
}
}
focus $w
} else {
set m [string tolower $mode]
set oldFamily [string tolower [lindex $::choosefont::listvar $oldIndex]]
set families [string tolower $::choosefont::listvar]
if {[string match $m* $oldFamily]} {
set newIndex [expr {$oldIndex + 1}]
set newFamily [lindex $::choosefont::listvar $newIndex]
if {![string match $m* [string tolower $newFamily]]} {
set newIndex [lsearch -glob $families $m* ]
}
} else {
set newIndex [lsearch -glob $families $m* ]
}
if {$newIndex < 0} { return }
}
set ::choosefont::family [$w get $newIndex]
$w selection clear $oldIndex
$w selection set $newIndex
$w activate $newIndex
$w see $newIndex
focus $w
return
}
proc createfont {args} {
if {$::choosefont::lock} {return ""}
variable ::choosefont::w
variable ::choosefont::font
variable ::choosefont::family
variable ::choosefont::size
variable ::choosefont::bold
variable ::choosefont::italic
variable ::choosefont::underline
variable ::choosefont::overstrike
catch { font delete TkChooseFont }
if {$::choosefont::size != "" \
& [catch {expr {int($::choosefont::size)}}] == "0"} {
set f [list -family $family -size $size]
} else {
set f [list -family $family]
}
foreach {var option value} {
bold -weight bold
italic -slant italic
underline -underline 1
overstrike -overstrike 1
} { if {[set $var]} { lappend f $option $value } }
eval [linsert $f 0 font create TkChooseFont]
$w.f.l config -font TkChooseFont
return $f
}
}
package provide choosefont 0.2
|
