/** Creates new StaffSystem from the parentInput's input stream.
* The next object in the input stream must be of this type.
*
* @param parentInput the parent RIFF object being used to read the input stream
*/
static public StaffSystem newInstance(Riff parentInput)
{
Riff riffInput = new Riff(parentInput, "LIST");
riffInput.requireFOURCC(RIFF_ID);
StaffSystem staffSystem = new StaffSystem
(RiffStaffSystemHeader.newInstance(riffInput));
// debug: check for NIFFStaffGrouping
while (riffInput.getBytesRemaining() > 0)
{
Staff staff;
if ((staff = RiffStaff.maybeNew(riffInput)) != null)
{
// Call addChild() which will set the child's parent to this.
staffSystem.addStaff(staff);
}
// debug: must check for NIFFFontSymbol, etc.
else
{
// Did not recognize the chunk type, so skip
riffInput.skipChunk();
}
}
return(staffSystem);
}
public int getSymbolCount()
{
if (_symbolPositioner != null)
{
return(_symbolPositioner.getSymbolCount());
}
// Create a new SymbolPositioner and add a position at each quarter note.
_symbolPositioner = new SymbolPositioner();
Rational quarter = new Rational(1, 4);
for (IntRatio r = new IntRatio(0, 1);
r.compareTo(getDuration()) < 0;
r.add(quarter))
{
_symbolPositioner.add(new Rational(r), 0);
}
// Go through the entire staff system and for every measure which
// has the same start time and duration as this, set its
// SymbolPositioner to the new one and call its addToSymbolPositioner
StaffSystem system = getParentStaff().getParentSystem();
for (int staffIndex = 0; staffIndex < system.getStaffCount(); ++staffIndex)
{
Staff staff = system.getStaff(staffIndex);
for (int measureIndex = 0;
measureIndex < staff.getMeasureStartCount();
++measureIndex)
{
MeasureStartTimeSlice measure = staff.getMeasureStart(measureIndex);
if (measure.getStartTime().Equals(getStartTime()) &&
measure.getDuration().Equals(getDuration()))
{
// This is an equivalent measure to this one in another
// staff (or it is this same measure.
measure._symbolPositioner = _symbolPositioner;
measure.addToSymbolPositioner();
// There should not be any more measures in this staff
// with the same start time.
break;
}
}
}
return(_symbolPositioner.getSymbolCount());
}
/** Get the hotspot for this object in screen coordinates.
*/
public FinalPoint getScreenHotspot()
{
if (_screenHotspot != null)
{
return(_screenHotspot);
}
// Compute the position by locating the start time within the staff duration.
// DEBUG: This all assumes that the measures in each staff of the staff
// system have the same number of measures. Maybe check this.
StaffSystem parentSystem = getParentStaff().getParentSystem();
_screenHotspot = new FinalPoint
(getParentStaff().getScreenHotspot(),
(int)((_startTime.doubleValue() - parentSystem.getStartTime().doubleValue())
* parentSystem.getWidth() /
parentSystem.getDuration().doubleValue()), 0);
return(_screenHotspot);
}
/** Creates new StaffSystem from the parentInput's input stream.
* The next object in the input stream must be of this type.
*
* @param parentInput the parent RIFF object being used to read the input stream
*/
public static StaffSystem newInstance(Riff parentInput)
{
Riff riffInput = new Riff(parentInput, "LIST");
riffInput.requireFOURCC(RIFF_ID);
StaffSystem staffSystem = new StaffSystem
(RiffStaffSystemHeader.newInstance(riffInput));
// debug: check for NIFFStaffGrouping
while (riffInput.getBytesRemaining() > 0) {
Staff staff;
if ((staff = RiffStaff.maybeNew(riffInput)) != null)
// Call addChild() which will set the child's parent to this.
staffSystem.addStaff(staff);
// debug: must check for NIFFFontSymbol, etc.
else
// Did not recognize the chunk type, so skip
riffInput.skipChunk();
}
return staffSystem;
}
/** Add the given staffSystem to the StaffSystem list.
* This does not call invalidate(), but you may need to before displaying.
*
* @param staffSystem the StaffSystem to add. It is an error if
* this is already the child of an object.
* @throws HeirarchyException if the staffSystem has already
* been added as a child to another object.
* @see #invalidate
*/
public void addSystem(StaffSystem staffSystem)
{
addChild(staffSystem);
}
/** Add the given staffSystem to the StaffSystem list.
* This does not call invalidate(), but you may need to before displaying.
*
* @param staffSystem the StaffSystem to add. It is an error if
* this is already the child of an object.
* @throws HeirarchyException if the staffSystem has already
* been added as a child to another object.
* @see #invalidate
*/
public void addSystem(StaffSystem staffSystem)
{
addChild(staffSystem);
}
