noteinserter.cpp

LINUX下的混音软件

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */

/*
    Rosegarden
    A MIDI and audio sequencer and musical notation editor.
 
    This program is Copyright 2000-2007
        Guillaume Laurent   <[e-mail]>,
        Chris Cannam        <[e-mail]>,
        Richard Bown        <[e-mail]>
 
    The moral rights of Guillaume Laurent, Chris Cannam, and Richard
    Bown to claim authorship of this work have been asserted.
 
    Other copyrights also apply to some parts of this work.  Please
    see the AUTHORS file and individual file headers for details.
 
    This program is free software; you can redistribute it and/or
    modify it under the terms of the GNU General Public License as
    published by the Free Software Foundation; either version 2 of the
    License, or (at your option) any later version.  See the file
    COPYING included with this distribution for more information.
*/


#include "NoteInserter.h"
#include "misc/Debug.h"
#include <kapplication.h>

#include "base/BaseProperties.h"
#include <klocale.h>
#include "misc/Strings.h"
#include "document/ConfigGroups.h"
#include "base/Event.h"
#include "base/NotationTypes.h"
#include "base/Segment.h"
#include "base/Staff.h"
#include "base/ViewElement.h"
#include "commands/notation/NoteInsertionCommand.h"
#include "commands/notation/RestInsertionCommand.h"
#include "commands/notation/TupletCommand.h"
#include "gui/general/EditTool.h"
#include "gui/general/LinedStaff.h"
#include "gui/general/RosegardenCanvasView.h"
#include "NotationProperties.h"
#include "NotationStrings.h"
#include "NotationTool.h"
#include "NotationView.h"
#include "NotePixmapFactory.h"
#include "NoteStyleFactory.h"
#include <kaction.h>
#include <kcommand.h>
#include <kconfig.h>
#include <qiconset.h>
#include <qregexp.h>
#include <qstring.h>


namespace Rosegarden
{

NoteInserter::NoteInserter(NotationView* view)
        : NotationTool("NoteInserter", view),
        m_noteType(Note::Quaver),
        m_noteDots(0),
        m_autoBeam(true),
        m_accidental(Accidentals::NoAccidental),
        m_lastAccidental(Accidentals::NoAccidental),
        m_followAccidental(false)
{
    QIconSet icon;

    KConfig *config = kapp->config();
    config->setGroup(NotationViewConfigGroup);
    m_autoBeam = config->readBoolEntry("autobeam", true);
    m_matrixInsertType = (config->readNumEntry("inserttype", 0) > 0);
    m_defaultStyle = qstrtostr(config->readEntry
                               ("style", strtoqstr(NoteStyleFactory::DefaultStyle)));

    KToggleAction *autoBeamAction =
        new KToggleAction(i18n("Auto-Beam when appropriate"), 0, this,
                          SLOT(slotToggleAutoBeam()), actionCollection(),
                          "toggle_auto_beam");
    autoBeamAction->setChecked(m_autoBeam);

    for (unsigned int i = 0; i < 6; ++i) {

        icon = QIconSet
               (NotePixmapFactory::toQPixmap(NotePixmapFactory::
                                             makeToolbarPixmap(m_actionsAccidental[i][3])));
        KRadioAction* noteAction = new KRadioAction(i18n(m_actionsAccidental[i][0]),
                                   icon, 0, this,
                                   m_actionsAccidental[i][1],
                                   actionCollection(),
                                   m_actionsAccidental[i][2]);
        noteAction->setExclusiveGroup("accidentals");
    }

    icon = QIconSet
           (NotePixmapFactory::toQPixmap(NotePixmapFactory::
                                         makeToolbarPixmap("dotted-crotchet")));
    new KToggleAction(i18n("Dotted note"), icon, 0, this,
                      SLOT(slotToggleDot()), actionCollection(),
                      "toggle_dot");

    icon = QIconSet(NotePixmapFactory::toQPixmap(NotePixmapFactory::
                    makeToolbarPixmap("select")));
    new KAction(i18n("Switch to Select Tool"), icon, 0, this,
                SLOT(slotSelectSelected()), actionCollection(),
                "select");

    new KAction(i18n("Switch to Erase Tool"), "eraser", 0, this,
                SLOT(slotEraseSelected()), actionCollection(),
                "erase");

    icon = QIconSet
           (NotePixmapFactory::toQPixmap(NotePixmapFactory::
                                         makeToolbarPixmap("rest-crotchet")));
    new KAction(i18n("Switch to Inserting Rests"), icon, 0, this,
                SLOT(slotRestsSelected()), actionCollection(),
                "rests");

    createMenu("noteinserter.rc");

    connect(m_parentView, SIGNAL(changeAccidental(Accidental, bool)),
            this, SLOT(slotSetAccidental(Accidental, bool)));
}

NoteInserter::NoteInserter(const QString& menuName, NotationView* view)
        : NotationTool(menuName, view),
        m_noteType(Note::Quaver),
        m_noteDots(0),
        m_autoBeam(false),
        m_clickHappened(false),
        m_accidental(Accidentals::NoAccidental),
        m_lastAccidental(Accidentals::NoAccidental),
        m_followAccidental(false)
{
    connect(m_parentView, SIGNAL(changeAccidental(Accidental, bool)),
            this, SLOT(slotSetAccidental(Accidental, bool)));
}

NoteInserter::~NoteInserter()
{}

void NoteInserter::ready()
{
    m_clickHappened = false;
    m_nParentView->setCanvasCursor(Qt::crossCursor);
    m_nParentView->setHeightTracking(true);
}

void
NoteInserter::handleLeftButtonPress(timeT,
                                    int,
                                    int staffNo,
                                    QMouseEvent* e,
                                    ViewElement*)
{
    if (staffNo < 0)
        return ;
    computeLocationAndPreview(e);
}

int
NoteInserter::handleMouseMove(timeT,
                              int,
                              QMouseEvent *e)
{
    if (m_clickHappened) {
        computeLocationAndPreview(e);
    }

    return RosegardenCanvasView::NoFollow;
}

void
NoteInserter::handleMouseRelease(timeT,
                                 int,
                                 QMouseEvent *e)
{
    if (!m_clickHappened)
        return ;
    bool okay = computeLocationAndPreview(e);
    m_clickHappened = false;
    if (!okay)
        return ;
    clearPreview();

    Note note(m_noteType, m_noteDots);
    timeT endTime = m_clickTime + note.getDuration();
    Segment &segment = m_nParentView->getStaff(m_clickStaffNo)->getSegment();

    Segment::iterator realEnd = segment.findTime(endTime);
    if (!segment.isBeforeEndMarker( realEnd) ||
            !segment.isBeforeEndMarker(++realEnd)) {
        endTime = segment.getEndMarkerTime();
    } else {
        endTime = std::max(endTime, (*realEnd)->getNotationAbsoluteTime());
    }

    Event *lastInsertedEvent = doAddCommand
                               (segment, m_clickTime, endTime, note, m_clickPitch,
                                (m_accidental == Accidentals::NoAccidental &&
                                 m_followAccidental) ?
                                m_lastAccidental : m_accidental);

    if (lastInsertedEvent) {

        m_nParentView->setSingleSelectedEvent
        (m_clickStaffNo, lastInsertedEvent);

        if (m_nParentView->isInChordMode()) {
            m_nParentView->slotSetInsertCursorAndRecentre
            (lastInsertedEvent->getAbsoluteTime(), e->x(), (int)e->y(),
             false);
        } else {
            m_nParentView->slotSetInsertCursorAndRecentre
            (lastInsertedEvent->getAbsoluteTime() +
             lastInsertedEvent->getDuration(), e->x(), (int)e->y(),
             false);
        }
    }
}

void
NoteInserter::insertNote(Segment &segment, timeT insertionTime,
                         int pitch, Accidental accidental,
                         bool suppressPreview)
{
    Note note(m_noteType, m_noteDots);
    timeT endTime = insertionTime + note.getDuration();

    Segment::iterator realEnd = segment.findTime(endTime);
    if (!segment.isBeforeEndMarker( realEnd) ||
            !segment.isBeforeEndMarker(++realEnd)) {
        endTime = segment.getEndMarkerTime();
    } else {
        endTime = std::max(endTime, (*realEnd)->getNotationAbsoluteTime());
    }

    Event *lastInsertedEvent = doAddCommand
                               (segment, insertionTime, endTime, note, pitch, accidental);

    if (lastInsertedEvent) {

        m_nParentView->setSingleSelectedEvent(segment, lastInsertedEvent);

        if (m_nParentView->isInChordMode()) {
            m_nParentView->slotSetInsertCursorPosition
            (lastInsertedEvent->getAbsoluteTime(), true, false);
        } else {
            m_nParentView->slotSetInsertCursorPosition
            (lastInsertedEvent->getAbsoluteTime() +
             lastInsertedEvent->getDuration(), true, false);
        }
    }

    if (!suppressPreview)
        m_nParentView->playNote(segment, pitch);
}

bool
NoteInserter::computeLocationAndPreview(QMouseEvent *e)
{
    double x = e->x();
    int y = (int)e->y();

    LinedStaff *staff = m_nParentView->getStaffForCanvasCoords(e->x(), y);
    if (!staff) {
        clearPreview();
        return false;
    }

    int staffNo = staff->getId();
    if (m_clickHappened && staffNo != m_clickStaffNo) {
        // abandon
        clearPreview();
        return false;
    }

    int height = staff->getHeightAtCanvasCoords(x, y);

    Event *clefEvt = 0, *keyEvt = 0;
    Clef clef;
    Rosegarden::Key key;

    NotationElementList::iterator itr =
        staff->getElementUnderCanvasCoords(x, y, clefEvt, keyEvt);
    if (itr == staff->getViewElementList()->end()) {
        clearPreview();
        return false;
    }

    timeT time = (*itr)->event()->getAbsoluteTime(); // not getViewAbsoluteTime()
    m_clickInsertX = (*itr)->getLayoutX();
    if (clefEvt)
        clef = Clef(*clefEvt);
    if (keyEvt)
        key = Rosegarden::Key(*keyEvt);

    NotationElement* el = static_cast<NotationElement*>(*itr);
    if (el->isRest() && el->getCanvasItem()) {
        time += getOffsetWithinRest(staffNo, itr, x);
        m_clickInsertX += (x - el->getCanvasX());
    }

    Pitch p(height, clef, key, m_accidental);
    int pitch = p.getPerformancePitch();

    // [RFE 987960] When inserting via mouse, if no accidental is
    // selected, we use the same accidental (and thus the same pitch)
    // as of the previous note found at this height -- iff such a note
    // is found more recently than the last key signature.

    if (m_accidental == Accidentals::NoAccidental &&
        m_followAccidental) {
        Segment &segment = staff->getSegment();
        m_lastAccidental = m_accidental;
        Segment::iterator i = segment.findNearestTime(time);
        while (i != segment.end()) {
            if ((*i)->isa(Rosegarden::Key::EventType)) break;
            if ((*i)->isa(Note::EventType)) {
                if ((*i)->has(NotationProperties::HEIGHT_ON_STAFF) &&
                    (*i)->has(BaseProperties::PITCH)) {
                    int h = (*i)->get<Int>(NotationProperties::HEIGHT_ON_STAFF);
                    if (h == height) {
                        pitch = (*i)->get<Int>(BaseProperties::PITCH);
                        (*i)->get<String>(BaseProperties::ACCIDENTAL,
                                          m_lastAccidental);
                        break;