# William T. Verts - Lab #4 - Scroller
 
SequenceNumber = 0
BaseFolder = ""

def SaveFile (Canvas):
    global SequenceNumber,BaseFolder
    if (BaseFolder == ""): BaseFolder = pickAFolder()
    
    # Create a new string from SequenceNumber, with enough
    #     leading 0s to make it 5 characters in length.
    # Create a new file name from:
    #    BaseFolder
    #    "SAVE"
    #    Your 5-digit string based on SequenceNumber
    #    ".jpg"
    # Save the Canvas to that new filename.
    # Add 1 to SequenceNumber.
    
    return
    
def Scroller (Canvas,Frames,NewText,BackgroundColor,TextColor): 

    # Stub to be filled in in this assignment (see instructions)

    return 
    
def Sunrise (Canvas,Frames):

    # Stub to be completed in the next assignment

    return 

def Run():
    global SequenceNumber, BaseFolder
    SequenceNumber = 0
    BaseFolder = ""
    Message = "Copyright "+chr(169)+"2016 Dr. William T. Verts" 
    Canvas = makeEmptyPicture(640,480)
    Sunrise (Canvas, 100) 
    Scroller (Canvas, 100, Message, blue, yellow) 
    return

def MakeMovie():
    global BaseFolder
    if (BaseFolder == ""): BaseFolder = pickAFolder()
    MyMovie = makeMovieFromInitialFile(BaseFolder + "SAVE00000.jpg")
    writeQuicktime(MyMovie, BaseFolder + "Scroller.mov", 16)
    return