Added old abandoned KDE3 version of the RoseGarden MIDI tool

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/applications/rosegarden@1097595 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

1 files changed, 269 insertions, 0 deletions

diff --git a/src/gui/widgets/PitchDragLabel.cpp b/src/gui/widgets/PitchDragLabel.cpp
new file mode 100644
index 0000000..1d22a77
--- /dev/null
+++ b/src/gui/widgets/PitchDragLabel.cpp
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+/* -*- 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 2000-2008
+        Guillaume Laurent   <[email protected]>,
+        Chris Cannam        <[email protected]>,
+        Richard Bown        <[email protected]>
+ 
+    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 "PitchDragLabel.h"
+
+#include "base/NotationRules.h"
+#include "base/NotationTypes.h"
+#include "gui/editors/notation/NotePixmapFactory.h"
+#include <qcanvas.h>
+#include <qpainter.h>
+#include <qpixmap.h>
+#include <qsize.h>
+#include <qwidget.h>
+
+
+namespace Rosegarden
+{
+
+PitchDragLabel::PitchDragLabel(QWidget *parent,
+                               int defaultPitch,
+                               bool defaultSharps) :
+        QWidget(parent),
+        m_pitch(defaultPitch),
+        m_usingSharps(defaultSharps),
+        m_clickedY(0),
+        m_clicked(false),
+        m_npf(new NotePixmapFactory())
+{
+    calculatePixmap();
+}
+
+PitchDragLabel::~PitchDragLabel()
+{
+    delete m_npf;
+}
+
+void
+PitchDragLabel::slotSetPitch(int p)
+{
+    bool up = (p > m_pitch);
+    m_usingSharps = up;
+    if (m_pitch == p)
+        return ;
+    m_pitch = p;
+    calculatePixmap();
+    emitPitchChange();
+    paintEvent(0);
+}
+
+void
+PitchDragLabel::slotSetPitch(int pitch, int octave, int step)
+{
+    if (m_pitch == pitch)
+        return ;
+    m_pitch = pitch;
+    calculatePixmap(pitch, octave, step);
+    emit pitchChanged(pitch);
+    emit pitchChanged(pitch, octave, step);
+    paintEvent(0);
+}
+
+void
+PitchDragLabel::mousePressEvent(QMouseEvent *e)
+{
+    if (e->button() == LeftButton) {
+        m_clickedY = e->y();
+        m_clickedPitch = m_pitch;
+        m_clicked = true;
+        emit preview(m_pitch);
+    }
+}
+
+void
+PitchDragLabel::mouseMoveEvent(QMouseEvent *e)
+{
+    if (m_clicked) {
+
+        int y = e->y();
+        int diff = y - m_clickedY;
+        int pitchDiff = diff * 4 / m_npf->getLineSpacing();
+
+        int newPitch = m_clickedPitch - pitchDiff;
+        if (newPitch < 0)
+            newPitch = 0;
+        if (newPitch > 127)
+            newPitch = 127;
+
+        if (m_pitch != newPitch) {
+            bool up = (newPitch > m_pitch);
+            m_pitch = newPitch;
+            m_usingSharps = up;
+            calculatePixmap();
+            emit pitchDragged(m_pitch);
+	    if (up)
+	    {
+		// use sharps
+		emit pitchDragged(m_pitch, (int)(((long)m_pitch) / 12),
+                                  steps_Cmajor_with_sharps[m_pitch % 12]);
+	    }
+	    else
+	    {
+		// use flats
+		emit pitchDragged(m_pitch, (int)(((long)m_pitch) / 12),
+                                  steps_Cmajor_with_flats[m_pitch % 12]);
+	    }
+            emit preview(m_pitch);
+            paintEvent(0);
+        }
+    }
+}
+
+void
+PitchDragLabel::mouseReleaseEvent(QMouseEvent *e)
+{
+    mouseMoveEvent(e);
+    emitPitchChange();
+    m_clicked = false;
+}
+
+void
+PitchDragLabel::emitPitchChange()
+{
+    emit pitchChanged(m_pitch);
+    
+	Pitch newPitch(m_pitch);
+	
+	if (m_usingSharps)
+	{
+		Rosegarden::Key key = Rosegarden::Key("C major");
+    	emit pitchDragged(m_pitch, newPitch.getOctave(0), newPitch.getNoteInScale(key));
+	}
+	else
+	{
+		Rosegarden::Key key = Rosegarden::Key("A minor");
+		emit pitchDragged(m_pitch, newPitch.getOctave(0), (newPitch.getNoteInScale(key) + 5) % 7);
+	}
+}
+
+void
+PitchDragLabel::wheelEvent(QWheelEvent *e)
+{
+    if (e->delta() > 0) {
+        if (m_pitch < 127) {
+            ++m_pitch;
+            m_usingSharps = true;
+            calculatePixmap();
+			emitPitchChange();
+            emit preview(m_pitch);
+            paintEvent(0);
+        }
+    } else {
+        if (m_pitch > 0) {
+            --m_pitch;
+            m_usingSharps = false;
+            calculatePixmap();
+            emitPitchChange();
+            emit preview(m_pitch);
+            paintEvent(0);
+        }
+    }
+}
+
+void
+PitchDragLabel::paintEvent(QPaintEvent *)
+{
+    QPainter paint(this);
+    paint.fillRect(0, 0, width(), height(), paint.backgroundColor());
+
+    int x = width() / 2 - m_pixmap.width() / 2;
+    if (x < 0)
+        x = 0;
+
+    int y = height() / 2 - m_pixmap.height() / 2;
+    if (y < 0)
+        y = 0;
+
+    paint.drawPixmap(x, y, m_pixmap);
+
+
+}
+
+QSize
+PitchDragLabel::sizeHint() const
+{
+    return QSize(150, 135);
+}
+
+void
+PitchDragLabel::calculatePixmap(int pitch, int octave, int step) const
+{
+    std::string clefType = Clef::Treble;
+    int octaveOffset = 0;
+
+    if (m_pitch > 94) {
+        octaveOffset = 2;
+    } else if (m_pitch > 82) {
+        octaveOffset = 1;
+    } else if (m_pitch < 60) {
+        clefType = Clef::Bass;
+        if (m_pitch < 24) {
+            octaveOffset = -2;
+        } else if (m_pitch < 36) {
+            octaveOffset = -1;
+        }
+    }
+
+    QCanvasPixmap *pmap = m_npf->makePitchDisplayPixmap
+                          (m_pitch,
+                           Clef(clefType, octaveOffset),
+                           octave, step);
+
+    m_pixmap = *pmap;
+
+    delete pmap;
+}
+
+void
+PitchDragLabel::calculatePixmap() const
+{
+    std::string clefType = Clef::Treble;
+    int octaveOffset = 0;
+
+    if (m_pitch > 94) {
+        octaveOffset = 2;
+    } else if (m_pitch > 82) {
+        octaveOffset = 1;
+    } else if (m_pitch < 60) {
+        clefType = Clef::Bass;
+        if (m_pitch < 24) {
+            octaveOffset = -2;
+        } else if (m_pitch < 36) {
+            octaveOffset = -1;
+        }
+    }
+
+    QCanvasPixmap *pmap = m_npf->makePitchDisplayPixmap
+                          (m_pitch,
+                           Clef(clefType, octaveOffset),
+                           m_usingSharps);
+
+    m_pixmap = *pmap;
+
+    delete pmap;
+}
+
+}
+#include "PitchDragLabel.moc"