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// qtractorThumbView.h
//
/****************************************************************************
Copyright (C) 2005-2022, rncbc aka Rui Nuno Capela. All rights reserved.
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.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*****************************************************************************/
#ifndef __qtractorThumbView_h
#define __qtractorThumbView_h
#include <QFrame>
// Forward declarations.
class qtractorRubberBand;
class QPaintEvent;
class QResizeEvent;
class QMouseEvent;
class QKeyEvent;
//-------------------------------------------------------------------------
// qtractorThumbView -- Session track line thumb view.
class qtractorThumbView : public QFrame
{
Q_OBJECT
public:
// Constructor.
qtractorThumbView(QWidget *pParent = 0);
// Update playhead-position.
void updatePlayHead(unsigned long iPlayHead);
// (Re)create the complete view pixmap.
void updateContents();
public slots:
// Update thumb-position.
void updateThumb(int dx = 0);
protected:
// Update view-position.
void updateView(int dx);
// Set playhead-position (indirect).
void setPlayHeadX(int iPlayHeadX);
// Session track-line paint method.
void paintEvent(QPaintEvent *pPaintEvent);
// Session track-line paint method.
void resizeEvent(QResizeEvent *pResizeEvent);
// Handle selection with mouse.
void mousePressEvent(QMouseEvent *pMouseEvent);
void mouseMoveEvent(QMouseEvent *pMouseEvent);
void mouseReleaseEvent(QMouseEvent *pMouseEvent);
// Reset drag state.
void resetDragState();
// Keyboard event handler.
void keyPressEvent(QKeyEvent *pKeyEvent);
private:
// Local double-buffering pixmap.
QPixmap m_pixmap;
// Local contents length (in frames).
unsigned long m_iContentsLength;
// Local playhead positioning.
int m_iPlayHeadX;
// The thumb rubber-band widget.
qtractorRubberBand *m_pRubberBand;
// Thumb drag-states.
enum { DragNone = 0, DragStart, DragMove, DragClick } m_dragState;
QPoint m_posDrag;
};
#endif // __qtractorThumbView_h
// end of qtractorThumbView.h
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