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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 <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_LOOPRULER_H_
#define _RG_LOOPRULER_H_
#include "base/SnapGrid.h"
#include "gui/general/HZoomable.h"
#include <qsize.h>
#include <qwidget.h>
#include <qpen.h>
#include "base/Event.h"
class QPaintEvent;
class QPainter;
class QMouseEvent;
namespace Rosegarden
{
class RulerScale;
class RosegardenGUIDoc;
/**
* LoopRuler is a widget that shows bar and beat durations on a
* ruler-like scale, and reacts to mouse clicks by sending relevant
* signals to modify position pointer and playback/looping states.
*/
class LoopRuler : public QWidget, public HZoomable
{
Q_OBJECT
public:
LoopRuler(RosegardenGUIDoc *doc,
RulerScale *rulerScale,
int height = 0,
double xorigin = 0.0,
bool invert = false,
QWidget* parent = 0,
const char *name = 0);
~LoopRuler();
void setSnapGrid(SnapGrid *grid);
virtual QSize sizeHint() const;
virtual QSize minimumSizeHint() const;
void scrollHoriz(int x);
void setMinimumWidth(int width) { m_width = width; }
void setHorizScaleFactor(double dy) { m_hScaleFactor = dy; }
bool hasActiveMousePress() { return m_activeMousePress; }
bool getLoopingMode() { return m_loopingMode; }
public slots:
void slotSetLoopMarker(timeT startLoop,
timeT endLoop);
protected:
// ActiveItem interface
virtual void mousePressEvent (QMouseEvent*);
virtual void mouseReleaseEvent (QMouseEvent*);
virtual void mouseDoubleClickEvent (QMouseEvent*);
virtual void mouseMoveEvent (QMouseEvent*);
virtual void paintEvent(QPaintEvent*);
void setLoopingMode(bool value) { m_loopingMode = value; }
void drawBarSections(QPainter*);
void drawLoopMarker(QPainter*); // between loop positions
signals:
// The three main functions that this class performs
//
/// Set the pointer position on mouse single click
void setPointerPosition(timeT);
/// Set the pointer position on mouse drag
void dragPointerToPosition(timeT);
/// Set pointer position and start playing on double click
void setPlayPosition(timeT);
/// Set a playing loop
void setLoop(timeT, timeT);
/// Set the loop end position on mouse drag
void dragLoopToPosition(timeT);
void startMouseMove(int directionConstraint);
void stopMouseMove();
void mouseMove();
protected:
//--------------- Data members ---------------------------------
int m_height;
double m_xorigin;
bool m_invert;
int m_currentXOffset;
int m_width;
bool m_activeMousePress;
RosegardenGUIDoc *m_doc;
bool m_mainWindow;
RulerScale *m_rulerScale;
SnapGrid m_defaultGrid;
SnapGrid m_loopGrid;
SnapGrid *m_grid;
QPen m_quickMarkerPen;
bool m_loopingMode;
timeT m_startLoop;
timeT m_endLoop;
};
}
#endif
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