annotate main/MainWindow.h @ 25:e74f508db18c

* Add setRatio method to the time stretcher, and make it possible to change
  the ratio without having to construct and replace the time stretcher.  This
  means we can do it seamlessly.  Add a lot more ratios to the
  time stretch control in the main window

/* -*- 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.
    
    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 _MAIN_WINDOW_H_
#define _MAIN_WINDOW_H_

#include <QFrame>
#include <QString>
#include <QMainWindow>
#include <QPointer>

#include "base/Command.h"
#include "view/ViewManager.h"
#include "base/PropertyContainer.h"
#include "layer/LayerFactory.h"
#include "transform/Transform.h"
#include "document/SVFileReader.h"
#include <map>

class Document;
class PaneStack;
class Pane;
class View;
class Fader;
class Panner;
class Layer;
class WaveformLayer;
class WaveFileModel;
class AudioCallbackPlaySource;
class AudioCallbackPlayTarget;
class CommandHistory;
class QMenu;
class AudioDial;
class QLabel;
class QCheckBox;
class PreferencesDialog;


class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow();
    virtual ~MainWindow();
    
    enum AudioFileOpenMode {
        ReplaceMainModel,
        CreateAdditionalModel,
        AskUser
    };

    bool openSomeFile(QString path);
    bool openAudioFile(QString path, AudioFileOpenMode = AskUser);
    bool openLayerFile(QString path);
    bool openSessionFile(QString path);
    bool saveSessionFile(QString path);
    bool commitData(bool mayAskUser); // on session shutdown

signals:
    // Used to toggle the availability of menu actions
    void canAddPane(bool);
    void canDeleteCurrentPane(bool);
    void canAddLayer(bool);
    void canImportMoreAudio(bool);
    void canImportLayer(bool);
    void canExportAudio(bool);
    void canExportLayer(bool);
    void canRenameLayer(bool);
    void canEditLayer(bool);
    void canSelect(bool);
    void canClearSelection(bool);
    void canEditSelection(bool);
    void canPaste(bool);
    void canInsertInstant(bool);
    void canDeleteCurrentLayer(bool);
    void canZoom(bool);
    void canScroll(bool);
    void canPlay(bool);
    void canFfwd(bool);
    void canRewind(bool);
    void canPlaySelection(bool);
    void canSave(bool);

protected slots:
    void openSession();
    void importAudio();
    void importMoreAudio();
    void openSomething();
    void openRecentFile();
    void exportAudio();
    void importLayer();
    void exportLayer();
    void saveSession();
    void saveSessionAs();
    void newSession();
    void closeSession();
    void preferences();

    void zoomIn();
    void zoomOut();
    void zoomToFit();
    void zoomDefault();
    void scrollLeft();
    void scrollRight();
    void jumpLeft();
    void jumpRight();

    void showNoOverlays();
    void showBasicOverlays();
    void showAllTextOverlays();

    void toggleZoomWheels();

    void play();
    void ffwd();
    void ffwdEnd();
    void rewind();
    void rewindStart();
    void stop();

    void addPane();
    void addLayer();
    void deleteCurrentPane();
    void renameCurrentLayer();
    void deleteCurrentLayer();

    void playLoopToggled();
    void playSelectionToggled();
    void playSpeedChanged(int);
    void playSharpenToggled();
    void sampleRateMismatch(size_t, size_t, bool);

    void outputLevelsChanged(float, float);

    void currentPaneChanged(Pane *);
    void currentLayerChanged(Pane *, Layer *);

    void toolNavigateSelected();
    void toolSelectSelected();
    void toolEditSelected();
    void toolDrawSelected();

    void selectAll();
    void selectToStart();
    void selectToEnd();
    void selectVisible();
    void clearSelection();
    void cut();
    void copy();
    void paste();
    void deleteSelected();
    void insertInstant();

    void documentModified();
    void documentRestored();

    void updateMenuStates();
    void updateDescriptionLabel();

    void layerAdded(Layer *);
    void layerRemoved(Layer *);
    void layerAboutToBeDeleted(Layer *);
    void layerInAView(Layer *, bool);

    void mainModelChanged(WaveFileModel *);
    void modelAdded(Model *);
    void modelAboutToBeDeleted(Model *);

    void modelGenerationFailed(QString);
    void modelRegenerationFailed(QString, QString);

    void rightButtonMenuRequested(Pane *, QPoint point);

    void preferenceChanged(PropertyContainer::PropertyName);

    void setupRecentFilesMenu();

    void showLayerTree();

    void website();
    void help();
    void about();

protected:
    QString                  m_sessionFile;
    QString                  m_audioFile;
    Document                *m_document;

    QLabel                  *m_descriptionLabel;
    PaneStack               *m_paneStack;
    ViewManager             *m_viewManager;
    Panner                  *m_panner;
    Fader                   *m_fader;
    AudioDial               *m_playSpeed;
    QCheckBox               *m_playSharpen;
    WaveformLayer           *m_panLayer;
    Layer                   *m_timeRulerLayer;

    AudioCallbackPlaySource *m_playSource;
    AudioCallbackPlayTarget *m_playTarget;

    bool                     m_mainMenusCreated;
    QMenu                   *m_paneMenu;
    QMenu                   *m_layerMenu;
    QMenu                   *m_existingLayersMenu;
    QMenu                   *m_recentFilesMenu;
    QMenu                   *m_rightButtonMenu;
    QMenu                   *m_rightButtonLayerMenu;

    bool                     m_documentModified;

    QPointer<PreferencesDialog> m_preferencesDialog;

    WaveFileModel *getMainModel();
    void createDocument();

    struct PaneConfiguration {
	PaneConfiguration(LayerFactory::LayerType _layer
			                       = LayerFactory::TimeRuler,
			  int _channel = -1) :
	    layer(_layer), channel(_channel) { }
	LayerFactory::LayerType layer;
	int channel;
    };

    typedef std::map<QAction *, PaneConfiguration> PaneActionMap;
    PaneActionMap m_paneActions;

    typedef std::map<QAction *, TransformName> TransformActionMap;
    TransformActionMap m_layerTransformActions;

    typedef std::map<QAction *, LayerFactory::LayerType> LayerActionMap;
    LayerActionMap m_layerActions;

    typedef std::map<QAction *, Layer *> ExistingLayerActionMap;
    ExistingLayerActionMap m_existingLayerActions;

    typedef std::map<ViewManager::ToolMode, QAction *> ToolActionMap;
    ToolActionMap m_toolActions;

    void setupMenus();
    void setupExistingLayersMenu();
    void setupToolbars();
    Pane *addPaneToStack();

    class PaneCallback : public SVFileReaderPaneCallback
    {
    public:
	PaneCallback(MainWindow *mw) : m_mw(mw) { }
	virtual Pane *addPane() { return m_mw->addPaneToStack(); }
	virtual void setWindowSize(int width, int height) {
	    m_mw->resize(width, height);
	}
	virtual void addSelection(int start, int end) {
	    m_mw->m_viewManager->addSelection(Selection(start, end));
	}
    protected:
	MainWindow *m_mw;
    };

    class AddPaneCommand : public Command
    {
    public:
	AddPaneCommand(MainWindow *mw);
	virtual ~AddPaneCommand();
	
	virtual void execute();
	virtual void unexecute();
	virtual QString getName() const;

	Pane *getPane() { return m_pane; }

    protected:
	MainWindow *m_mw;
	Pane *m_pane; // Main window owns this, but I determine its lifespan
	Pane *m_prevCurrentPane; // I don't own this
	bool m_added;
    };

    class RemovePaneCommand : public Command
    {
    public:
	RemovePaneCommand(MainWindow *mw, Pane *pane);
	virtual ~RemovePaneCommand();
	
	virtual void execute();
	virtual void unexecute();
	virtual QString getName() const;

    protected:
	MainWindow *m_mw;
	Pane *m_pane; // Main window owns this, but I determine its lifespan
	Pane *m_prevCurrentPane; // I don't own this
	bool m_added;
    };

    virtual void closeEvent(QCloseEvent *e);
    bool checkSaveModified();

    void createPlayTarget();

    void openHelpUrl(QString url);

    void toXml(QTextStream &stream);
};


#endif