Open Mash Cross Reference
mash/tcl/mb/ui-browsetime.tcl

   # ui-browsetime.tcl --
   #
   #       FIXME: This file needs a description here.
   #
   # Copyright (c) 1997-2002 The Regents of the University of California.
   # All rights reserved.
   #
   # Redistribution and use in source and binary forms, with or without
   # modification, are permitted provided that the following conditions are met:
  #
  # A. Redistributions of source code must retain the above copyright notice,
  #    this list of conditions and the following disclaimer.
  # B. Redistributions in binary form must reproduce the above copyright notice,
  #    this list of conditions and the following disclaimer in the documentation
  #    and/or other materials provided with the distribution.
  # C. Neither the names of the copyright holders nor the names of its
  #    contributors may be used to endorse or promote products derived from this
  #    software without specific prior written permission.
  #
  # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
  # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  # ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE FOR
  # ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  # DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
  # SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  # CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
  # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  #
  #   @(#) $Header: /usr/mash/src/repository/mash/mash-1/tcl/mb/ui-browsetime.tcl,v 1.4 2002/02/03 04:27:17 lim Exp $
  
  
  Class MBTimePanel
  
  MBTimePanel instproc init {parent} {
          $self instproc path_ slider_ timeLabel_ stopBut_ playBut_
          set path_ [frame $parent.ts]
          set slider_ [scale $path_.slider -orient horizontal \
                          -from 0 -to 10000 -relief groove -borderwidth 1 \
                          -showvalue false -command "$self updateLabel"]
          #
          # We want slightly different semantics.  Instead of tracking
          # the time slider continuously, we just update it when the
          # button is released. (but we use updateTime to give feedback to the
          # user
          # E.g., it takes too long to do a fast-forward each time.
          #
          bind $slider_ <Button-1> "$self wait"
          bind $slider_ <Button-2> "$self wait"
  
          bind $slider_ <ButtonRelease-1> "$self move2time"
          bind $slider_ <ButtonRelease-2> "$self move2time"
  
          pack $slider_ -side left -fill x
  
          set timeLabel_ [label $path_.timeL]
          set stopBut_ [button $path_.stopB -text stop -command "$self stop"]
          set playBut_ [button $path_.playB -text play -command "$self start"]
          pack -side left $timeLabel_ $stopBut_ $playBut_ -fill x
  }
  
  MBTimePanel instproc formatTime {time} {
          clock format $time "%h:%M:%S $p"
  }
  
  MBTimePanel instproc minTime {time} {
          $self set mintime_ $time
  }
  
  MBTimePanel instproc maxTime {time} {
          $self set maxtime_ $time
  }
  
  MBTimePanel instproc pack {args} {
          eval pack $args [$self set path_]
  }
  
  MBTimePanel instproc unpack {} {
          pack forget [$self set $path_]
  }
  
  MBTimePanel instproc updateCallBack {cmd} {
          $self set updateCallBack_ $cmd
  }
  
  MBTimePanel instproc setTime {val} {
          $self instvar updateCallBack_
          set newtime [expr {$mintime_ + ($x/10000.0)*($maxtime_ - $mintime_)}]
          eval $updateCallBack_ $newtime
  }
  
  MBTimePanel instproc updateLabel {x} {
          $self instvar timeLabel_
          $self set sliderVal $x
          set newtime [expr {$mintime_ + ($x/10000.0)*($maxtime_ - $mintime_)}]
          $timeLabel_ configure -text [$self formatTime newtime]
  }
  
 MBTimePanel instproc move2time {x} {
         set newtime [expr $mintime_ + ($x/10000.0)*($maxtime_ - $mintime_)]
         $self setTime $x
 }