//=============================================================================
//  MuseScore
//  Music Composition & Notation
//
//  Copyright (C) 2011 Werner Schweer
//
//  This program is free software; you can redistribute it and/or modify
//  it under the terms of the GNU General Public License version 2
//  as published by the Free Software Foundation and appearing in
//  the file LICENCE.GPL
//=============================================================================

#include "score.h"
#include "rehearsalmark.h"
#include "measure.h"
#include "system.h"

namespace Ms {

//---------------------------------------------------------
//   rehearsalMarkStyle
//---------------------------------------------------------

static const ElementStyle rehearsalMarkStyle {
      { Sid::rehearsalMarkPlacement, Pid::PLACEMENT },
      { Sid::rehearsalMarkMinDistance, Pid::MIN_DISTANCE },
      };

//---------------------------------------------------------
//   RehearsalMark
//---------------------------------------------------------

RehearsalMark::RehearsalMark(Score* s)
   : TextBase(s, Tid::REHEARSAL_MARK)
      {
      initElementStyle(&rehearsalMarkStyle);
      setSystemFlag(true);
      }

//---------------------------------------------------------
//   layout
//---------------------------------------------------------

void RehearsalMark::layout()
      {
      TextBase::layout();

      Segment* s = segment();
      if (s) {
            if (s->rtick().isZero()) {
                  // first CR of measure, alignment is hcenter or right (the usual cases)
                  // align with barline, point just after header, or start of measure depending on context

                  Measure* m = s->measure();
                  Segment* header = s->prev();  // possibly just a start repeat
                  qreal measureX = -s->x();
                  Segment* repeat = m->findSegmentR(SegmentType::StartRepeatBarLine, Fraction(0, 1));
                  qreal barlineX = repeat ? repeat->x() - s->x() : measureX;
                  System* sys = m->system();
                  bool systemFirst = (sys && sys->firstMeasure() == m);

                  if (!header || repeat || !systemFirst) {
                        // no header, or header with repeat, or header mid-system - align with barline
                        rxpos() = barlineX;
                        }
                  else {
                        // header at start of system
                        // align to a point just after the header
                        Element* e = header->element(track());      // TODO: firstVisibleStaff
                        qreal w = e ? e->width() : header->width();
                        rxpos() = header->x() + w - s->x();

                        // special case for right aligned rehearsal marks at start of system
                        // left align with start of measure if that is further left
                        if (align() & Align::RIGHT)
                              rxpos() = qMin(rpos().x(), measureX + width());
                        }
                  }
            autoplaceSegmentElement();
            }
      }

//---------------------------------------------------------
//   propertyDefault
//---------------------------------------------------------

QVariant RehearsalMark::propertyDefault(Pid id) const
      {
      switch (id) {
            case Pid::SUB_STYLE:
                  return int(Tid::REHEARSAL_MARK);
            case Pid::PLACEMENT:
                  return score()->styleV(Sid::rehearsalMarkPlacement);
            default:
                  return TextBase::propertyDefault(id);
            }
      }

//---------------------------------------------------------
//   getPropertyStyle
//---------------------------------------------------------

Sid RehearsalMark::getPropertyStyle(Pid pid) const
      {
      if (pid == Pid::OFFSET)
            return placeAbove() ? Sid::rehearsalMarkPosAbove : Sid::rehearsalMarkPosBelow;
      return TextBase::getPropertyStyle(pid);
      }

} // namespace Ms