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161 lines
4.2 KiB
161 lines
4.2 KiB
/*
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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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#ifndef _RG_MATRIXCANVASVIEW_H_
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#define _RG_MATRIXCANVASVIEW_H_
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#include "gui/general/RosegardenCanvasView.h"
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#include "base/Event.h"
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class TQWidget;
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class TQWheelEvent;
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class TQMouseEvent;
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class TQCanvasItem;
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class TQCanvas;
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namespace Rosegarden
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{
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class SnapGrid;
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class MatrixStaff;
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class MatrixElement;
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class MatrixCanvasView : public RosegardenCanvasView
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{
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TQ_OBJECT
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public:
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MatrixCanvasView(MatrixStaff&,
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SnapGrid *,
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bool drumMode,
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TQCanvas *viewing,
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TQWidget *parent=0, const char *name=0, WFlags f=0);
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~MatrixCanvasView();
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void setSmoothModifier(TQt::ButtonState s) { m_smoothModifier = s; }
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TQt::ButtonState getSmoothModifier() { return m_smoothModifier; }
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signals:
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/**
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* Emitted when the user clicks on a TQCanvasItem which is active
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*
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* @see TQCanvasItem#setActive
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*/
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void activeItemPressed(TQMouseEvent*,
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TQCanvasItem* item);
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/**
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* Emitted when the mouse cursor moves to a different height
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* on the staff. Returns the new pitch.
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*/
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void hoveredOverNoteChanged(int evPitch, bool haveEvent,
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timeT evTime);
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/**
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* Emitted when the mouse cursor moves to a note which is at a
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* different time
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*
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* \a time is set to the absolute time of the note the cursor is
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* hovering on
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*/
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void hoveredOverAbsoluteTimeChanged(unsigned int time);
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void mousePressed(timeT time, int pitch,
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TQMouseEvent*, MatrixElement*);
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void mouseMoved(timeT time, int pitch, TQMouseEvent*);
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void mouseReleased(timeT time, int pitch, TQMouseEvent*);
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void mouseEntered();
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void mouseLeft();
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public slots:
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void slotExternalWheelEvent(TQWheelEvent*);
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protected:
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/**
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* Callback for a mouse button press event in the canvas
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*/
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virtual void contentsMousePressEvent(TQMouseEvent*);
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/**
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* Callback for a mouse move event in the canvas
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*/
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virtual void contentsMouseMoveEvent(TQMouseEvent*);
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/**
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* Callback for a mouse button release event in the canvas
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*/
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virtual void contentsMouseReleaseEvent(TQMouseEvent*);
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/**
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* Callback for a mouse double-click event in the canvas
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*
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* NOTE: a double click event is always preceded by a mouse press
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* event
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*/
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virtual void contentsMouseDoubleClickEvent(TQMouseEvent*);
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virtual void enterEvent(TQEvent *);
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virtual void leaveEvent(TQEvent *);
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/**
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* Update the value of snap grid according to the button's state
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*
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* If the button was pressed with the 'smooth' modifier, set the
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* grid so it won't snap time.
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*
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* @see #setSmoothModifier
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* @see #getSmoothModifier
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*/
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void updateGridSnap(TQMouseEvent *e);
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//--------------- Data members ---------------------------------
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MatrixStaff &m_staff;
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SnapGrid *m_snapGrid;
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bool m_drumMode;
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timeT m_previousEvTime;
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int m_previousEvPitch;
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bool m_mouseWasPressed;
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bool m_ignoreClick;
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TQt::ButtonState m_smoothModifier;
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timeT m_lastSnap;
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bool m_isSnapTemporary;
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};
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}
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#endif
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