lib/choose_font.tcl

   1 # git-gui font chooser
   2 # Copyright (C) 2007 Shawn Pearce
   3
   4 class choose_font {
   5
   6 field w
   7 field w_family    ; # UI widget of all known family names
   8 field w_example   ; # Example to showcase the chosen font
   9
  10 field f_family    ; # Currently chosen family name
  11 field f_size      ; # Currently chosen point size
  12
  13 field v_family    ; # Name of global variable for family
  14 field v_size      ; # Name of global variable for size
  15
  16 variable all_families [list]  ; # All fonts known to Tk
  17
  18 constructor pick {path title a_family a_size} {
  19         variable all_families
  20         global use_ttk NS
  21
  22         set v_family $a_family
  23         set v_size $a_size
  24
  25         upvar #0 $v_family pv_family
  26         upvar #0 $v_size pv_size
  27
  28         set f_family $pv_family
  29         set f_size $pv_size
  30
  31         make_dialog top w
  32         wm withdraw $top
  33         wm title $top "[appname] ([reponame]): $title"
  34         wm geometry $top "+[winfo rootx $path]+[winfo rooty $path]"
  35
  36         ${NS}::label $w.header -text $title -font font_uibold -anchor center
  37         pack $w.header -side top -fill x
  38
  39         ${NS}::frame $w.buttons
  40         ${NS}::button $w.buttons.select \
  41                 -text [mc Select] \
  42                 -default active \
  43                 -command [cb _select]
  44         ${NS}::button $w.buttons.cancel \
  45                 -text [mc Cancel] \
  46                 -command [list destroy $w]
  47         pack $w.buttons.select -side right
  48         pack $w.buttons.cancel -side right -padx 5
  49         pack $w.buttons -side bottom -fill x -pady 10 -padx 10
  50
  51         ${NS}::frame $w.inner
  52
  53         ${NS}::frame $w.inner.family
  54         ${NS}::label $w.inner.family.l \
  55                 -text [mc "Font Family"] \
  56                 -anchor w
  57         set w_family $w.inner.family.v
  58         text $w_family \
  59                 -background white \
  60                 -foreground black \
  61                 -borderwidth 1 \
  62                 -relief sunken \
  63                 -cursor $::cursor_ptr \
  64                 -wrap none \
  65                 -width 30 \
  66                 -height 10 \
  67                 -yscrollcommand [list $w.inner.family.sby set]
  68         rmsel_tag $w_family
  69         ${NS}::scrollbar $w.inner.family.sby -command [list $w_family yview]
  70         pack $w.inner.family.l -side top -fill x
  71         pack $w.inner.family.sby -side right -fill y
  72         pack $w_family -fill both -expand 1
  73
  74         ${NS}::frame $w.inner.size
  75         ${NS}::label $w.inner.size.l \
  76                 -text [mc "Font Size"] \
  77                 -anchor w
  78         tspinbox $w.inner.size.v \
  79                 -textvariable @f_size \
  80                 -from 2 -to 80 -increment 1 \
  81                 -width 3
  82         bind $w.inner.size.v <FocusIn> {%W selection range 0 end}
  83         pack $w.inner.size.l -fill x -side top
  84         pack $w.inner.size.v -fill x -padx 2
  85
  86         grid configure $w.inner.family $w.inner.size -sticky nsew
  87         grid rowconfigure $w.inner 0 -weight 1
  88         grid columnconfigure $w.inner 0 -weight 1
  89         pack $w.inner -fill both -expand 1 -padx 5 -pady 5
  90
  91         ${NS}::frame $w.example
  92         ${NS}::label $w.example.l \
  93                 -text [mc "Font Example"] \
  94                 -anchor w
  95         set w_example $w.example.t
  96         text $w_example \
  97                 -background white \
  98                 -foreground black \
  99                 -borderwidth 1 \
 100                 -relief sunken \
 101                 -height 3 \
 102                 -width 40
 103         rmsel_tag $w_example
 104         $w_example tag conf example -justify center
 105         $w_example insert end [mc "This is example text.\nIf you like this text, it can be your font."] example
 106         $w_example conf -state disabled
 107         pack $w.example.l -fill x
 108         pack $w_example -fill x
 109         pack $w.example -fill x -padx 5
 110
 111         if {$all_families eq {}} {
 112                 set all_families [lsort [font families]]
 113         }
 114
 115         $w_family tag conf pick
 116         $w_family tag bind pick <Button-1> [cb _pick_family %x %y]\;break
 117         foreach f $all_families {
 118                 set sel [list pick]
 119                 if {$f eq $f_family} {
 120                         lappend sel in_sel
 121                 }
 122                 $w_family insert end "$f\n" $sel
 123         }
 124         $w_family conf -state disabled
 125         _update $this
 126
 127         trace add variable @f_size write [cb _update]
 128         bind $w <Key-Escape> [list destroy $w]
 129         bind $w <Key-Return> [cb _select]\;break
 130         bind $w <Visibility> "
 131                 grab $w
 132                 focus $w
 133         "
 134         wm deiconify $w
 135         tkwait window $w
 136 }
 137
 138 method _select {} {
 139         upvar #0 $v_family pv_family
 140         upvar #0 $v_size pv_size
 141
 142         set pv_family $f_family
 143         set pv_size $f_size
 144
 145         destroy $w
 146 }
 147
 148 method _pick_family {x y} {
 149         variable all_families
 150
 151         set i [lindex [split [$w_family index @$x,$y] .] 0]
 152         set n [lindex $all_families [expr {$i - 1}]]
 153         if {$n ne {}} {
 154                 $w_family tag remove in_sel 0.0 end
 155                 $w_family tag add in_sel $i.0 [expr {$i + 1}].0
 156                 set f_family $n
 157                 _update $this
 158         }
 159 }
 160
 161 method _update {args} {
 162         variable all_families
 163
 164         set i [lsearch -exact $all_families $f_family]
 165         if {$i < 0} return
 166
 167         $w_example tag conf example -font [list $f_family $f_size]
 168         $w_family see [expr {$i + 1}].0
 169 }
 170
 171 }