SignalWidget.h

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/***************************************************************************
                SignalWidget.h - Widget for displaying the signal
                             -------------------
    begin                : Sun Nov 12 2000
    copyright            : (C) 2000 by Thomas Eschenbacher
    email                : Thomas.Eschenbacher@gmx.de
 ***************************************************************************/

/***************************************************************************
 *                                                                         *
 *   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.                                   *
 *                                                                         *
 ***************************************************************************/

#ifndef SIGNAL_WIDGET_H
#define SIGNAL_WIDGET_H

#include "config.h"

#include <QtGlobal>
#include <QGridLayout>
#include <QImage>
#include <QLabel>
#include <QList>
#include <QObject>
#include <QPainter>
#include <QPixmap>
#include <QPointer>
#include <QPolygon>
#include <QQueue>
#include <QSize>
#include <QTimer>
#include <QWidget>

#include "libkwave/PluginManager.h"
#include "libkwave/SignalManager.h"
#include "libkwave/String.h"

#include "libgui/SignalView.h"

class QBitmap;
class QContextMenuEvent;
class QDragEnterEvent;
class QDragMoveEvent;
class QDropEvent;
class QDragLeaveEvent;
class QEvent;
class QMouseEvent;
class QMoveEvent;
class QPaintEvent;
class QPoint;
class QVBoxLayout;
class QWheelEvent;

class QUrl;

class LabelType;
class TimeOperation;
class TrackPixmap;

namespace Kwave
{

    class FileContext;
    class SignalManager;
    class Track;

    class Q_DECL_EXPORT SignalWidget: public QWidget,
                                      public Kwave::ViewManager
    {
        Q_OBJECT

    public:

        SignalWidget(QWidget *parent,
                     Kwave::SignalManager *signal_manager,
                     QVBoxLayout *upper_dock, QVBoxLayout *lower_dock);

        virtual ~SignalWidget() Q_DECL_OVERRIDE;

        void setZoomAndOffset(double zoom, sample_index_t offset);

        int mapToViewPort(const QPoint &pos) const;

        int visibleWidth() const;

        virtual void insertView(Kwave::SignalView *view, QWidget *controls)
            Q_DECL_OVERRIDE;

    signals:

        void sigRepaint();

    public slots:

        void requestRepaint(Kwave::SignalView *view);

        void forwardCommand(const QString &command);

    protected slots:

        virtual void contextMenuEvent(QContextMenuEvent *e) Q_DECL_OVERRIDE;

    private slots:

        void repaintTimerElapsed();

        void slotTrackInserted(unsigned int index, Kwave::Track *track);

        void slotTrackDeleted(unsigned int index, Kwave::Track *track);

        void contextMenuEditUndo() { forwardCommand(_("undo()")); }

        void contextMenuEditRedo() { forwardCommand(_("redo()")); }

        void contextMenuEditCut()  { forwardCommand(_("cut()"));  }

        void contextMenuEditCopy() { forwardCommand(_("copy()")); }

        void contextMenuEditPaste() {forwardCommand(_("paste()")); }

        void contextMenuSaveSelection() {
            forwardCommand(_("saveselect()"));
        }

        void contextMenuSelectionExpandToLabels() {
            forwardCommand(_("expandtolabel()"));
        }

        void contextMenuSelectionNextLabels()  {
            forwardCommand(_("selectnextlabels()"));
        }

        void contextMenuSelectionPrevLabels()  {
            forwardCommand(_("selectprevlabels()"));
        }

        void updateMinimumHeight();

    signals:

        void selectedTimeInfo(sample_index_t offset, sample_index_t length,
                              double rate);

        void sigCommand(const QString &command);

        void sigCursorChanged(sample_index_t pos);

    protected:

        virtual void wheelEvent(QWheelEvent *event) Q_DECL_OVERRIDE;

    private:

        void setVerticalZoom(double zoom);

        void insertRow(int index, Kwave::SignalView *view, QWidget *controls);

        void deleteRow(int index);

    private:

        Kwave::SignalManager *m_signal_manager;

        QList< QPointer<Kwave::SignalView> > m_views;

        QGridLayout m_layout;

        QPointer<QVBoxLayout> m_upper_dock;

        QPointer<QVBoxLayout> m_lower_dock;

        sample_index_t m_offset;

        double m_zoom;

        double m_vertical_zoom;

        QTimer m_repaint_timer;

        QQueue< QPointer<Kwave::SignalView> > m_repaint_queue;
    };
}

#endif /* SIGNAL_WIDGET_H */

//***************************************************************************
//***************************************************************************