PC Answers 1998 January/PC Answers Issue 49 Cover CD January 1998.iso/Apps/Director/DATA.Z/Animation Wizard.dir/00004_IncrDecrValue.ls

Text File | 1997-05-10 | 3.5 KB | 122 lines

property iType, iMin, iMax, iInc, ichField, ichButton, iLastValidValue, iFieldName, iCastNumNormal, iCastNumIncr, iCastNumDecr

on birth me, type, min, max, incAmount, chText, theFieldName
  set iType to type
  set iMin to min
  set iMax to max
  set iInc to incAmount
  set ichField to chText
  set ichButton to ichField + 1
  set iLastValidValue to iMin
  set iFieldName to theFieldName
  mSetValue(me, iLastValidValue)
  return me
end

on mHit me
  set castNumNormal to the castNum of sprite ichButton
  set iCastNumNormal to castNumNormal
  set iCastNumIncr to castNumNormal + 1
  set iCastNumDecr to castNumNormal + 2
  set iLastValidValue to field the castNum of sprite ichField
  set lowerLimitBeepedFlag to 0
  set upperLimitBeepedFlag to 0
  set mouseDownFlag to 1
  set firstTimeFlag to 1
  repeat while mouseDownFlag
    if rollOver(ichButton) then
      set okToChangeValueFlag to 1
      if the mouseV <= the locV of sprite ichButton then
        set lowerLimitBeepedFlag to 0
        set sign to 1
        if iLastValidValue = iMax then
          set okToChangeValueFlag to 0
          if not upperLimitBeepedFlag then
            beep()
            set upperLimitBeepedFlag to 1
            set the castNum of sprite ichButton to castNumNormal
            updateStage()
          end if
        end if
      else
        set upperLimitBeepedFlag to 0
        set sign to -1
        if iLastValidValue = iMin then
          set okToChangeValueFlag to 0
          if not lowerLimitBeepedFlag then
            beep()
            set lowerLimitBeepedFlag to 1
            set the castNum of sprite ichButton to castNumNormal
            updateStage()
          end if
        end if
      end if
      if okToChangeValueFlag then
        mChangeValue(me, sign)
      end if
    else
      set the castNum of sprite ichButton to castNumNormal
      updateStage()
    end if
    if firstTimeFlag then
      set firstTimeFlag to 0
      wait(15)
    end if
    set mouseDownFlag to the mouseDown
  end repeat
  set the castNum of sprite ichButton to castNumNormal
  updateStage()
end

on mChangeValue me, sign
  if sign = 1 then
    set the castNum of sprite ichButton to iCastNumIncr
  else
    set the castNum of sprite ichButton to iCastNumDecr
  end if
  updateStage()
  if iType = #int then
    set iLastValidValue to (integer(iLastValidValue / iInc) * iInc) + (iInc * sign)
  else
    if iType = #real then
      set iLastValidValue to (iLastValidValue / iInc * iInc) + (iInc * sign)
    end if
  end if
  put iLastValidValue into field the castNum of sprite ichField
end

on mGetValue me
  set theTypedInString to the text of field iFieldName
  set newValue to value(theTypedInString)
  if iLastValidValue <> newValue then
    set iLastValidValue to newValue
  end if
  return iLastValidValue
end

on mSetValue me, theNewValue
  if (theNewValue < iMin) or (theNewValue > iMax) then
    alert("Bad value passed to IncrDecrValue:" && theNewValue)
    return
  end if
  set iLastValidValue to theNewValue
  set the text of field iFieldName to string(iLastValidValue)
  updateStage()
end

on mValidate me
  set theTypedInString to the text of field iFieldName
  set newValue to value(theTypedInString)
  if voidp(newValue) then
    alert("The value in the " & iFieldName & " field must be numeric")
    mSetValue(me, iMin)
    return 0
  end if
  if (newValue > iMax) or (newValue < iMin) then
    alert("Please enter a value between " & iMin & " and " & iMax & " into the " & iFieldName & " field.")
    mSetValue(me, iMin)
    return 0
  end if
  return 1
end