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/*
*
* $Id: k3baudioeditorwidget.h 620140 2007-01-05 12:02:29Z trueg $
* Copyright (C) 2004-2007 Sebastian Trueg <trueg@k3b.org>
*
* This file is part of the K3b project.
* Copyright (C) 1998-2007 Sebastian Trueg <trueg@k3b.org>
*
* 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" for the exact licensing terms.
*/
#ifndef _K3B_AUDIO_EDITOR_WIDGET_H_
#define _K3B_AUDIO_EDITOR_WIDGET_H_
#include <tqframe.h>
#include <tqptrlist.h>
#include <k3bmsf.h>
class TQPainter;
class K3bAudioEditorWidget : public TQFrame
{
Q_OBJECT
TQ_OBJECT
public:
K3bAudioEditorWidget( TQWidget* parent = 0, const char* name = 0 );
~K3bAudioEditorWidget();
TQSize sizeHint() const;
TQSize minimumSizeHint() const;
/**
* For now the Editor has only one parameter: the length data.
*/
void setLength( const K3b::Msf& length );
const K3b::Msf length() const;
/**
* Add a user editable range.
* @param startFixed if true the range's start cannot be changed by the user, only with modifyRange
* @param endFixed if true the range's end cannot be changed by the user, only with modifyRange
* @param brush if not specified or it has the NoBrush style one is chosen automatically.
*
* @return -1 on error or an identifier on success (be aware that the highest value for end is length-1)
*/
int addRange( const K3b::Msf& start, const K3b::Msf& end,
bool startFixed = false, bool endFixed = false,
const TQString& toolTip = TQString(),
const TQBrush& brush = TQBrush() );
/**
* \returns the identifier of the range which spans over x position \a pos or
* 0 if no range is defined in this region.
*/
int findRange( int pos ) const;
/**
* Searches for a range edge at x position \a pos.
* \return The ranges identifier if an edge could be found or 0 if there is no
* range edge at the position.
*/
int findRangeEdge( int pos, bool* end = 0 ) const;
/**
* @returns false if the range does not exist or end was bigger than start.
*/
bool modifyRange( int identifier, const K3b::Msf& start, const K3b::Msf& end );
/**
* @returns false if the range does not exist.
*/
bool removeRange( int identifier );
K3b::Msf rangeStart( int identifier ) const;
K3b::Msf rangeEnd( int identifier ) const;
/**
* \return A list of all ranges' identifiers sorted ascending by start
* offset
*/
TQValueList<int> allRanges() const;
void setMaxNumberOfMarkers( int );
/**
* @param fixed if true the marker cannot be changed by the user, only with moveMarker
* @return -1 on error or an identifier on success.
*/
int addMarker( const K3b::Msf& pos, bool fixed = false,
const TQString& toolTip = TQString(), const TQColor& color = TQColor() );
/**
* @return false if the marker does not exist.
*/
bool removeMarker( int identifier );
/**
* @return false if the marker does not exist.
*/
bool moveMarker( int identifier, const K3b::Msf& );
void enableMouseAtSignal( bool b ) { m_mouseAt = b; }
/**
* By default ranges can overlap. If overlapping ranges are not allowed
* the editor widget will modify and delete ranges accordingly.
*
* Caution: So far setting this will not check if ranges already overlap.
*/
void setAllowOverlappingRanges( bool b );
/**
* Range selection is by default disabled. If it is enabled the editor visually
* highlights the last clicked range.
*
* \sa setSelectedRange
*/
void enableRangeSelection( bool b );
bool allowOverlappingRanges() const;
bool rangeSelectedEnabled() const;
void setSelectedRange( int id );
/**
* \return The identifier of the currently selected range or 0
* if none is selected.
*/
int selectedRange() const;
K3b::Msf posToMsf( int x ) const;
int msfToPos( const K3b::Msf& msf ) const;
/**
* Set the brush to paint the selected range. Default is TQColorGroup::Highlight
*/
void setSelectedRangeBrush( const TQBrush& );
const TQBrush& selectedRangeBrush() const;
signals:
/**
* Emitted when enabled.
*/
void mouseAt( const K3b::Msf& );
/**
* Emitted when the user changed a range.
* This signal is not emitted when a range is changed via modifyRange.
*/
void rangeChanged( int identifier, const K3b::Msf& start, const K3b::Msf& end );
void rangeRemoved( int );
void selectedRangeChanged( int );
/**
* Emitted when the user moves a marker.
* This signal is not emitted when a marker is changed via moveMarker.
*/
void markerMoved( int identifier, const K3b::Msf& pos );
void markerAdded( int identifier, const K3b::Msf& pos );
void markerRemoved( int identifier );
private:
class Range;
class RangeList;
class Marker;
class ToolTip;
class Private;
Private* d;
void mousePressEvent( TQMouseEvent* e );
void mouseReleaseEvent( TQMouseEvent* e );
void mouseDoubleClickEvent( TQMouseEvent* e );
void mouseMoveEvent( TQMouseEvent* e );
void drawContents( TQPainter* );
void drawAll( TQPainter*, const TQRect& );
void drawRange( TQPainter* p, const TQRect&, Range* r );
void drawMarker( TQPainter* p, const TQRect&, Marker* m );
/**
* Makes sure that \a r does not overlap any other range by modifying and
* deleting other ranges.
*/
void fixupOverlappingRanges( Range* r );
Range* getRange( int i ) const;
Marker* getMarker( int i ) const;
Range* findRange( const TQPoint& p ) const;
Range* findRangeEdge( const TQPoint& p, bool* end = 0 ) const;
Marker* findMarker( const TQPoint& p ) const;
void setSelectedRange( Range* );
int m_maxMarkers;
K3b::Msf m_length;
TQPtrList<Marker> m_markers;
int m_idCnt;
bool m_mouseAt;
/**
* Margin around the timethingy
*/
int m_margin;
Range* m_draggedRange;
bool m_draggingRangeEnd;
Marker* m_draggedMarker;
ToolTip* m_toolTip;
};
#endif
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