annotate view/PaneStack.h @ 1127:9fb8dfd7ce4c spectrogram-minor-refactor

Fix threshold in spectrogram -- it wasn't working in the last release.
There is a new protocol for this. Formerly the threshold parameter had a
range from -50dB to 0 with the default at -50, and -50 treated internally
as "no threshold". However, there was a hardcoded, hidden internal threshold
for spectrogram colour mapping at -80dB with anything below this being rounded
to zero. Now the threshold parameter has range -81 to -1 with the default
at -80, -81 is treated internally as "no threshold", and there is no hidden
internal threshold. So the default behaviour is the same as before, an
effective -80dB threshold, but it is now possible to change this in both
directions. Sessions reloaded from prior versions may look slightly different
because, if the session says there should be no threshold, there will now
actually be no threshold instead of having the hidden internal one.

Still need to do something in the UI to make it apparent that the -81dB
setting removes the threshold entirely. This is at least no worse than the
previous, also obscured, magic -50dB setting.

/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */

/*
    Sonic Visualiser
    An audio file viewer and annotation editor.
    Centre for Digital Music, Queen Mary, University of London.
    This file copyright 2006 Chris Cannam and QMUL.
    
    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 _PANESTACK_H_
#define _PANESTACK_H_

#include <QFrame>

#include <map>

#include "base/BaseTypes.h"

class QWidget;
class QLabel;
class QStackedWidget;
class QSplitter;
class QGridLayout;
class QPushButton;
class View;
class Pane;
class Layer;
class ViewManager;
class PropertyContainer;
class PropertyStack;
class AlignmentView;

class PaneStack : public QFrame
{
    Q_OBJECT

public:
    PaneStack(QWidget *parent, ViewManager *viewManager);

    Pane *addPane(bool suppressPropertyBox = false); // I own the returned value
    Pane *insertPane(int index, bool suppressPropertyBox = false); // I own the returned value
    void deletePane(Pane *pane); // Deletes the pane, but _not_ its layers

    int getPaneCount() const; // Returns only count of visible panes
    Pane *getPane(int n); // Of visible panes; I own the returned value
    int getPaneIndex(Pane *pane); // so getPane(index)==pane; -1 if absent

    void hidePane(Pane *pane); // Also removes pane from getPane/getPaneCount
    void showPane(Pane *pane); // Returns pane to getPane/getPaneCount

    int getHiddenPaneCount() const;
    Pane *getHiddenPane(int n); // I own the returned value

    void setCurrentPane(Pane *pane);
    void setCurrentLayer(Pane *pane, Layer *layer);
    Pane *getCurrentPane();

    enum LayoutStyle {
        NoPropertyStacks = 0,
        SinglePropertyStackLayout = 1,
        PropertyStackPerPaneLayout = 2
    };

    LayoutStyle getLayoutStyle() const { return m_layoutStyle; }
    void setLayoutStyle(LayoutStyle style);

    void setPropertyStackMinWidth(int mw);
    
    void setShowPaneAccessories(bool show); // current indicator, close button

    void setShowAlignmentViews(bool show);

    void sizePanesEqually();

signals:
    void currentPaneChanged(Pane *pane);
    void currentLayerChanged(Pane *pane, Layer *layer);
    void rightButtonMenuRequested(Pane *pane, QPoint position);
    void propertyStacksResized(int width);
    void propertyStacksResized();
    void contextHelpChanged(const QString &);

    void paneAdded(Pane *pane);
    void paneAdded();
    void paneHidden(Pane *pane);
    void paneHidden();
    void paneAboutToBeDeleted(Pane *pane);
    void paneDeleted();

    void dropAccepted(Pane *pane, QStringList uriList);
    void dropAccepted(Pane *pane, QString text);

    void paneDeleteButtonClicked(Pane *pane);

    void doubleClickSelectInvoked(sv_frame_t frame);

public slots:
    void propertyContainerAdded(PropertyContainer *);
    void propertyContainerRemoved(PropertyContainer *);
    void propertyContainerSelected(View *client, PropertyContainer *);
    void viewSelected(View *v);
    void paneInteractedWith();
    void rightButtonMenuRequested(QPoint);
    void paneDropAccepted(QStringList);
    void paneDropAccepted(QString);
    void paneDeleteButtonClicked();
    void indicatorClicked();

protected:
    Pane *m_currentPane;

    struct PaneRec
    {
	Pane          *pane;
	QWidget       *propertyStack;
        QPushButton   *xButton;
	QLabel        *currentIndicator;
        QFrame        *frame;
        QGridLayout   *layout;
        AlignmentView *alignmentView;
    };

    std::vector<PaneRec> m_panes;
    std::vector<PaneRec> m_hiddenPanes;

    bool m_showAccessories;
    bool m_showAlignmentViews;

    QSplitter *m_splitter;
    QStackedWidget *m_propertyStackStack;

    ViewManager *m_viewManager; // I don't own this
    int m_propertyStackMinWidth;
    void sizePropertyStacks();

    void showOrHidePaneAccessories();

    void unlinkAlignmentViews();
    void relinkAlignmentViews();

    LayoutStyle m_layoutStyle;
};

#endif