1 files changed, 133 insertions, 0 deletions
diff --git a/src/gui/editors/matrix/PianoKeyboard.h b/src/gui/editors/matrix/PianoKeyboard.h
new file mode 100644
index 0000000..e8b06bb
--- /dev/null
+++ b/src/gui/editors/matrix/PianoKeyboard.h
@@ -0,0 +1,133 @@
+
+/* -*- 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   <glaurent@telegraph-road.org>,
+        Chris Cannam        <cannam@all-day-breakfast.com>,
+        Richard Bown        <richard.bown@ferventsoftware.com>
+
+    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.
+*/
+
+#ifndef _RG_PIANOKEYBOARD_H_
+#define _RG_PIANOKEYBOARD_H_
+
+#include "gui/rulers/PitchRuler.h"
+#include <qsize.h>
+#include <vector>
+
+
+class QWidget;
+class QPaintEvent;
+class QMouseEvent;
+class QEvent;
+
+
+namespace Rosegarden
+{
+
+
+
+class PianoKeyboard : public PitchRuler
+{
+    Q_OBJECT
+public:
+    PianoKeyboard(QWidget *parent, int keys = 88);
+
+    virtual QSize sizeHint() const;
+    virtual QSize minimumSizeHint() const;
+
+    /* 
+     * We want to be able to call this from the matrix view
+     */
+    void drawHoverNote(int evPitch);
+
+signals:
+
+    /**
+     * A key has been clicked on the keyboard.
+     *
+     * The repeating flag is there to tell the MatrixView not to send
+     * the same note again as we're in the middle of a swoosh.
+     * MatrixView does the y -> Note calculation.
+     */
+    void keyPressed(unsigned int y, bool repeating);
+
+    /**
+     * A key has been clicked with the selection modifier pressed.
+     * The MatrixView will probably interpret this as meaning to
+     * select all notes of that pitch.
+     *
+     * The repeating flag is there to tell the MatrixView not to
+     * clear the selection as we're in the middle of a swoosh.
+     * MatrixView does the y -> Note calculation.
+     */
+    void keySelected(unsigned int y, bool repeating);
+
+    /**
+     * A key has been released on the keyboard.
+     *
+     * The repeating flag is there to tell the MatrixView not to send
+     * the same note again as we're in the middle of a swoosh.
+     * MatrixView does the y -> Note calculation.
+     */
+    void keyReleased(unsigned int y, bool repeating);
+
+    /**
+     * Emitted when the mouse cursor moves to a different key when
+     * not clicking or selecting.
+     * MatrixView does the y -> Note calculation.
+     */
+    void hoveredOverKeyChanged(unsigned int y);
+
+protected:
+
+    virtual void paintEvent(QPaintEvent*);
+
+    virtual void mouseMoveEvent(QMouseEvent*);
+    virtual void mousePressEvent(QMouseEvent*);
+    virtual void mouseReleaseEvent(QMouseEvent*);
+    virtual void enterEvent(QEvent *);
+    virtual void leaveEvent(QEvent *);
+
+    // compute all key positions and store them
+    //
+    void computeKeyPos();
+
+    //--------------- Data members ---------------------------------
+    QSize m_keySize;
+    QSize m_blackKeySize;
+    unsigned int m_nbKeys;
+
+    std::vector<unsigned int> m_whiteKeyPos;
+    std::vector<unsigned int> m_blackKeyPos;
+    std::vector<unsigned int> m_labelKeyPos;
+    std::vector<unsigned int> m_allKeyPos;
+
+    bool                      m_mouseDown;
+    bool                      m_selecting;
+
+    // highlight element on the keyboard
+    QWidget                  *m_hoverHighlight;
+    int                       m_lastHoverHighlight;
+    int                       m_lastKeyPressed;
+};
+
+
+}
+
+#endif