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/*
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Rosegarden
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A MIDI and audio sequencer and musical notation editor.
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This program is Copyright 2000-2008
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Guillaume Laurent <glaurent@telegraph-road.org>,
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Chris Cannam <cannam@all-day-breakfast.com>,
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Richard Bown <richard.bown@ferventsoftware.com>
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The moral rights of Guillaume Laurent, Chris Cannam, and Richard
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Bown to claim authorship of this work have been asserted.
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Other copyrights also apply to some parts of this work. Please
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see the AUTHORS file and individual file headers for details.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version. See the file
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COPYING included with this distribution for more information.
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*/
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#include "PitchDragLabel.h"
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#include "base/NotationRules.h"
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#include "base/NotationTypes.h"
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#include "gui/editors/notation/NotePixmapFactory.h"
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#include <tqcanvas.h>
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#include <tqpainter.h>
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#include <tqpixmap.h>
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#include <tqsize.h>
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#include <tqwidget.h>
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namespace Rosegarden
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{
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PitchDragLabel::PitchDragLabel(TQWidget *parent,
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int defaultPitch,
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bool defaultSharps) :
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TQWidget(parent),
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m_pitch(defaultPitch),
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m_usingSharps(defaultSharps),
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m_clickedY(0),
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m_clicked(false),
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m_npf(new NotePixmapFactory())
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{
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calculatePixmap();
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}
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PitchDragLabel::~PitchDragLabel()
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{
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delete m_npf;
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}
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void
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PitchDragLabel::slotSetPitch(int p)
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{
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bool up = (p > m_pitch);
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m_usingSharps = up;
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if (m_pitch == p)
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return ;
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m_pitch = p;
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calculatePixmap();
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emitPitchChange();
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paintEvent(0);
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}
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void
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PitchDragLabel::slotSetPitch(int pitch, int octave, int step)
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{
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if (m_pitch == pitch)
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return ;
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m_pitch = pitch;
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calculatePixmap(pitch, octave, step);
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emit pitchChanged(pitch);
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emit pitchChanged(pitch, octave, step);
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paintEvent(0);
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}
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void
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PitchDragLabel::mousePressEvent(TQMouseEvent *e)
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{
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if (e->button() == TQt::LeftButton) {
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m_clickedY = e->y();
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m_clickedPitch = m_pitch;
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m_clicked = true;
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emit preview(m_pitch);
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}
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}
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void
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PitchDragLabel::mouseMoveEvent(TQMouseEvent *e)
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{
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if (m_clicked) {
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int y = e->y();
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int diff = y - m_clickedY;
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int pitchDiff = diff * 4 / m_npf->getLineSpacing();
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int newPitch = m_clickedPitch - pitchDiff;
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if (newPitch < 0)
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newPitch = 0;
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if (newPitch > 127)
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newPitch = 127;
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if (m_pitch != newPitch) {
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bool up = (newPitch > m_pitch);
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m_pitch = newPitch;
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m_usingSharps = up;
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calculatePixmap();
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emit pitchDragged(m_pitch);
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if (up)
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{
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// use sharps
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emit pitchDragged(m_pitch, (int)(((long)m_pitch) / 12),
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steps_Cmajor_with_sharps[m_pitch % 12]);
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}
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else
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{
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// use flats
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emit pitchDragged(m_pitch, (int)(((long)m_pitch) / 12),
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steps_Cmajor_with_flats[m_pitch % 12]);
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}
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emit preview(m_pitch);
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paintEvent(0);
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}
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}
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}
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void
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PitchDragLabel::mouseReleaseEvent(TQMouseEvent *e)
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{
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mouseMoveEvent(e);
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emitPitchChange();
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m_clicked = false;
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}
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void
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PitchDragLabel::emitPitchChange()
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{
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emit pitchChanged(m_pitch);
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Pitch newPitch(m_pitch);
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if (m_usingSharps)
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{
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Rosegarden::Key key = Rosegarden::Key("C major");
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emit pitchDragged(m_pitch, newPitch.getOctave(0), newPitch.getNoteInScale(key));
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}
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else
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{
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Rosegarden::Key key = Rosegarden::Key("A minor");
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emit pitchDragged(m_pitch, newPitch.getOctave(0), (newPitch.getNoteInScale(key) + 5) % 7);
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}
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}
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void
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PitchDragLabel::wheelEvent(TQWheelEvent *e)
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{
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if (e->delta() > 0) {
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if (m_pitch < 127) {
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++m_pitch;
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m_usingSharps = true;
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calculatePixmap();
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emitPitchChange();
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emit preview(m_pitch);
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paintEvent(0);
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}
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} else {
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if (m_pitch > 0) {
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--m_pitch;
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m_usingSharps = false;
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calculatePixmap();
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emitPitchChange();
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emit preview(m_pitch);
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paintEvent(0);
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}
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}
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}
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void
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PitchDragLabel::paintEvent(TQPaintEvent *)
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{
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TQPainter paint(this);
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paint.fillRect(0, 0, width(), height(), paint.backgroundColor());
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int x = width() / 2 - m_pixmap.width() / 2;
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if (x < 0)
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x = 0;
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int y = height() / 2 - m_pixmap.height() / 2;
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if (y < 0)
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y = 0;
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paint.drawPixmap(x, y, m_pixmap);
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}
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TQSize
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PitchDragLabel::sizeHint() const
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{
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return TQSize(150, 135);
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}
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void
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PitchDragLabel::calculatePixmap(int pitch, int octave, int step) const
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{
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std::string clefType = Clef::Treble;
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int octaveOffset = 0;
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if (m_pitch > 94) {
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octaveOffset = 2;
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} else if (m_pitch > 82) {
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octaveOffset = 1;
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} else if (m_pitch < 60) {
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clefType = Clef::Bass;
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if (m_pitch < 24) {
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octaveOffset = -2;
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} else if (m_pitch < 36) {
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octaveOffset = -1;
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}
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}
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TQCanvasPixmap *pmap = m_npf->makePitchDisplayPixmap
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(m_pitch,
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Clef(clefType, octaveOffset),
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octave, step);
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m_pixmap = *pmap;
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delete pmap;
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}
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void
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PitchDragLabel::calculatePixmap() const
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{
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std::string clefType = Clef::Treble;
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int octaveOffset = 0;
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if (m_pitch > 94) {
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octaveOffset = 2;
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} else if (m_pitch > 82) {
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octaveOffset = 1;
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} else if (m_pitch < 60) {
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clefType = Clef::Bass;
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if (m_pitch < 24) {
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octaveOffset = -2;
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} else if (m_pitch < 36) {
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octaveOffset = -1;
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}
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}
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TQCanvasPixmap *pmap = m_npf->makePitchDisplayPixmap
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(m_pitch,
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Clef(clefType, octaveOffset),
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m_usingSharps);
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m_pixmap = *pmap;
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delete pmap;
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}
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}
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#include "PitchDragLabel.moc"
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