lib/status_bar.tcl

   1 # git-gui status bar mega-widget
   2 # Copyright (C) 2007 Shawn Pearce
   3
   4 class status_bar {
   5
   6 field w         ; # our own window path
   7 field w_l       ; # text widget we draw messages into
   8 field w_c       ; # canvas we draw a progress bar into
   9 field status  {}; # single line of text we show
  10 field prefix  {}; # text we format into status
  11 field units   {}; # unit of progress
  12
  13 constructor new {path} {
  14         set w $path
  15         set w_l $w.l
  16         set w_c $w.c
  17
  18         frame $w \
  19                 -borderwidth 1 \
  20                 -relief sunken
  21         label $w_l \
  22                 -textvariable @status \
  23                 -anchor w \
  24                 -justify left
  25         pack $w_l -side left
  26
  27         bind $w <Destroy> [cb _delete %W]
  28         return $this
  29 }
  30
  31 method start {msg uds} {
  32         if {[winfo exists $w_c]} {
  33                 $w_c coords bar 0 0 0 20
  34         } else {
  35                 canvas $w_c \
  36                         -width 100 \
  37                         -height [expr {int([winfo reqheight $w_l] * 0.6)}] \
  38                         -borderwidth 1 \
  39                         -relief groove \
  40                         -highlightt 0
  41                 $w_c create rectangle 0 0 0 20 -tags bar -fill navy
  42                 pack $w_c -side right
  43         }
  44
  45         set status $msg
  46         set prefix $msg
  47         set units  $uds
  48 }
  49
  50 method update {have total} {
  51         set pdone 0
  52         if {$total > 0} {
  53                 set pdone [expr {100 * $have / $total}]
  54         }
  55
  56         set status [format "%s ... %i of %i %s (%2i%%)" \
  57                 $prefix $have $total $units $pdone]
  58         $w_c coords bar 0 0 $pdone 20
  59 }
  60
  61 method stop {msg} {
  62         destroy $w_c
  63         set status $msg
  64 }
  65
  66 method show {msg} {
  67         set status $msg
  68 }
  69
  70 method _delete {current} {
  71         if {$current eq $w} {
  72                 delete_this
  73         }
  74 }
  75
  76 }