guitarchordinserter.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 "GuitarChordInserter.h"

#include <klocale.h>
#include "base/Event.h"
#include "base/Exception.h"
#include "base/Staff.h"
#include "base/ViewElement.h"
#include "commands/notation/EraseEventCommand.h"
#include "commands/notation/GuitarChordInsertionCommand.h"
#include "gui/general/EditTool.h"
#include "gui/general/LinedStaff.h"
#include "gui/editors/guitar/GuitarChordSelectorDialog.h"
#include "misc/Debug.h"
#include "NotationElement.h"
#include "NotationTool.h"
#include "NotationView.h"
#include "NotePixmapFactory.h"
#include <kaction.h>
#include <qdialog.h>
#include <qiconset.h>
#include <qstring.h>


namespace Rosegarden
{

GuitarChordInserter::GuitarChordInserter(NotationView* view)
        : NotationTool("GuitarChordInserter", view),
        m_guitarChordSelector(0)
{
    QIconSet 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("crotchet")));

    new KAction(i18n("Switch to Inserting Notes"), icon, 0, this,
                SLOT(slotNoteSelected()), actionCollection(),
                "notes");

    m_guitarChordSelector = new GuitarChordSelectorDialog(m_nParentView);
    m_guitarChordSelector->init();
    createMenu("guitarchordinserter.rc");
}

void GuitarChordInserter::slotGuitarChordSelected()
{
    // Switch to last selected Guitar Chord
    // m_nParentView->slotLastGuitarChordAction();
}

void GuitarChordInserter::slotEraseSelected()
{
    m_parentView->actionCollection()->action("erase")->activate();
}

void GuitarChordInserter::slotSelectSelected()
{
    m_parentView->actionCollection()->action("select")->activate();
}

void GuitarChordInserter::handleLeftButtonPress(timeT,
        int,
        int staffNo,
        QMouseEvent* e,
        ViewElement *element)
{
    NOTATION_DEBUG << "GuitarChordInserter::handleLeftButtonPress" << endl;

    if (staffNo < 0) {
        return ;
    }

    Staff *staff = m_nParentView->getStaff(staffNo);

    if (element && element->event()->isa(Guitar::Chord::EventType)) {
        handleSelectedGuitarChord (element, staff);
    } else {
        createNewGuitarChord (element, staff, e);
    }
}

bool GuitarChordInserter::processDialog( Staff* staff,
                                       timeT& insertionTime)
{
    bool result = false;

    if (m_guitarChordSelector->exec() == QDialog::Accepted) {
        Guitar::Chord chord = m_guitarChordSelector->getChord();

        GuitarChordInsertionCommand *command =
            new GuitarChordInsertionCommand
            (staff->getSegment(), insertionTime, chord);

        m_nParentView->addCommandToHistory(command);
        result = true;
    }

    return result;
}

void GuitarChordInserter::handleSelectedGuitarChord (ViewElement* element, Staff *staff)
{
    NOTATION_DEBUG << "GuitarChordInserter::handleSelectedGuitarChord" << endl;


    // Get time of where guitar chord is inserted
    timeT insertionTime = element->event()->getAbsoluteTime(); // not getViewAbsoluteTime()

    // edit an existing guitar chord, if that's what we clicked on
    try {
        Guitar::Chord chord(*(element->event()));

        m_guitarChordSelector->setChord(chord);
        
        if ( processDialog( staff, insertionTime ) ) {
            // Erase old guitar chord
            EraseEventCommand *command =
                new EraseEventCommand(staff->getSegment(),
                                      element->event(),
                                      false);

            m_nParentView->addCommandToHistory(command);
        }
    } catch (Exception e) {}
}

void GuitarChordInserter::createNewGuitarChord (ViewElement* element, Staff *staff, QMouseEvent* e)
{
    NOTATION_DEBUG << "GuitarChordInserter::createNewGuitarChord" << endl;
    Event *clef = 0, *key = 0;

    LinedStaff *s = dynamic_cast<LinedStaff *>(staff);

    NotationElementList::iterator closestElement =
        s->getClosestElementToCanvasCoords(e->x(), (int)e->y(),
                                           clef, key, false, -1);

    if (closestElement == staff->getViewElementList()->end()) {
        return ;
    }

    timeT insertionTime = (*closestElement)->event()->getAbsoluteTime(); // not getViewAbsoluteTime()

    processDialog( staff, insertionTime );
}

const QString GuitarChordInserter::ToolName = "guitarchordinserter";

}
#include "GuitarChordInserter.moc"