140 lines
4.7 KiB
C++
140 lines
4.7 KiB
C++
//=============================================================================
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// MuseScore
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// Music Composition & Notation
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// $Id:$
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//
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// Copyright (C) 2011 Werner Schweer
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License version 2
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// as published by the Free Software Foundation and appearing in
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// the file LICENCE.GPL
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//=============================================================================
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#include "scoreview.h"
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#include "libmscore/score.h"
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#include "musescore.h"
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#include "libmscore/staff.h"
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#include "libmscore/utils.h"
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#include "libmscore/undo.h"
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#include "libmscore/part.h"
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//---------------------------------------------------------
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// testElementDragTransition
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//---------------------------------------------------------
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bool ScoreView::testElementDragTransition(QMouseEvent* ev)
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{
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if (curElement == 0 || !curElement->isMovable() || QApplication::mouseButtons() != Qt::LeftButton)
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return false;
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if (curElement->type() == Element::MEASURE) {
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System* dragSystem = (System*)(curElement->parent());
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int staffIdx = getStaff(dragSystem, startMove);
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dragStaff = score()->staff(staffIdx);
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if (staffIdx == 0)
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return false;
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}
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QPoint delta = ev->pos() - startMoveI;
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return delta.manhattanLength() > 2;
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}
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//---------------------------------------------------------
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// startDrag
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//---------------------------------------------------------
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void ScoreView::startDrag()
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{
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dragElement = curElement;
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startMove -= dragElement->userOff();
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_score->startCmd();
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if (dragElement->type() == Element::MEASURE) {
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staffUserDist = dragStaff->userDist();
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}
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else {
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foreach(Element* e, _score->selection().elements())
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e->setStartDragPosition(e->userOff());
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}
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_score->end();
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}
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//---------------------------------------------------------
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// doDragElement
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//---------------------------------------------------------
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void ScoreView::doDragElement(QMouseEvent* ev)
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{
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QPointF delta = toLogical(ev->pos()) - startMove;
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QPointF pt(delta);
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if (qApp->keyboardModifiers() == Qt::ShiftModifier)
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pt.setX(0.0);
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else if (qApp->keyboardModifiers() == Qt::ControlModifier)
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pt.setY(0.0);
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EditData data;
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data.hRaster = mscore->hRaster();
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data.vRaster = mscore->vRaster();
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data.pos = pt;
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if (dragElement->type() == Element::MEASURE) {
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qreal dist = dragStaff->userDist() + delta.y();
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int partStaves = dragStaff->part()->nstaves();
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StyleIdx i = (partStaves > 1) ? ST_akkoladeDistance : ST_staffDistance;
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qreal _spatium = _score->spatium();
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qreal styleDist = _score->styleS(i).val() * _spatium;
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if ((dist + styleDist) < _spatium) // limit minimum distance to spatium
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dist = -styleDist + _spatium;
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dragStaff->setUserDist(dist);
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startMove += delta;
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_score->doLayoutSystems();
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update();
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return;
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}
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foreach(Element* e, _score->selection().elements())
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_score->addRefresh(e->drag(data));
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if (_score->playNote()) {
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Element* e = _score->selection().element();
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if (e)
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mscore->play(e);
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_score->setPlayNote(false);
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}
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Element* e = _score->getSelectedElement();
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if (e) {
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QLineF anchor = e->dragAnchor();
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if (!anchor.isNull())
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setDropAnchor(anchor);
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else
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setDropTarget(0); // this also resets dropAnchor
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}
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_score->update();
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}
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//---------------------------------------------------------
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// endDrag
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//---------------------------------------------------------
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void ScoreView::endDrag()
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{
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if (dragElement->type() == Element::MEASURE) {
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qreal userDist = dragStaff->userDist();
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dragStaff->setUserDist(staffUserDist);
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score()->undo(new ChangeStaffUserDist(dragStaff, userDist));
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}
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else {
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foreach(Element* e, _score->selection().elements()) {
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e->endDrag();
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QPointF npos = e->userOff();
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e->setUserOff(e->startDragPosition());
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_score->undoMove(e, npos);
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}
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}
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_score->setLayoutAll(true);
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dragElement = 0;
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setDropTarget(0); // this also resets dropAnchor
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_score->endCmd();
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mscore->endCmd();
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}
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