annotate main/MainWindow.h @ 88:51be0daa1386

Several changes related to referring to remote URLs for sessions and files:
* Pull file dialog wrapper functions out from MainWindow into FileFinder
* If a file referred to in a session is not found at its expected location,
  try a few other alternatives (same location as the session file or same
  location as the last audio file) before asking the user to locate it
* Allow user to give a URL when locating an audio file, not just locate on
  the filesystem
* Make wave file models remember the "original" location (e.g. URL) of
  the audio file, not just the actual location from which the data was
  loaded (e.g. local copy of that URL) -- when saving a session, use the
  original location so as not to refer to a temporary file
* Clean up incompletely-downloaded local copies of files

/* -*- 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 _MAIN_WINDOW_H_
#define _MAIN_WINDOW_H_

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

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

class Document;
class PaneStack;
class Pane;
class View;
class Fader;
class Overview;
class Layer;
class WaveformLayer;
class WaveFileModel;
class AudioCallbackPlaySource;
class AudioCallbackPlayTarget;
class CommandHistory;
class QMenu;
class AudioDial;
class QLabel;
class QCheckBox;
class PreferencesDialog;
class QPushButton;
class OSCQueue;
class OSCMessage;


class MainWindow : public QMainWindow
{
    Q_OBJECT

public:
    MainWindow(bool withAudioOutput = true,
               bool withOSCSupport = true);
    virtual ~MainWindow();
    
    enum AudioFileOpenMode {
        ReplaceMainModel,
        CreateAdditionalModel,
        AskUser
    };

    enum FileOpenStatus {
        FileOpenSucceeded,
        FileOpenFailed,
        FileOpenCancelled
    };

    FileOpenStatus openSomeFile(QString path, AudioFileOpenMode = AskUser);
    FileOpenStatus openAudioFile(QString path, AudioFileOpenMode = AskUser);
    FileOpenStatus openLayerFile(QString path);
    FileOpenStatus openSessionFile(QString path);
    FileOpenStatus openURL(QUrl url);

    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 canInsertInstantsAtBoundaries(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 openLocation();
    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 togglePropertyBoxes();

    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 playMonoToggled();
    void sampleRateMismatch(size_t, size_t, bool);
    void audioOverloadPluginDisabled();

    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 insertInstantAt(size_t);
    void insertInstantsAtBoundaries();

    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 propertyStacksResized();

    void preferenceChanged(PropertyContainer::PropertyName);

    void setupRecentFilesMenu();
    void setupRecentTransformsMenu();

    void showLayerTree();

    void pollOSC();
    void handleOSCMessage(const OSCMessage &);

    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;
    Overview                *m_overview;
    Fader                   *m_fader;
    AudioDial               *m_playSpeed;
    QPushButton             *m_playSharpen;
    QPushButton             *m_playMono;
    WaveformLayer           *m_panLayer;
    Layer                   *m_timeRulerLayer;

    bool                     m_audioOutput;
    AudioCallbackPlaySource *m_playSource;
    AudioCallbackPlayTarget *m_playTarget;

    OSCQueue                *m_oscQueue;

    RecentFiles              m_recentFiles;
    RecentFiles              m_recentTransforms;

    bool                     m_mainMenusCreated;
    QMenu                   *m_paneMenu;
    QMenu                   *m_layerMenu;
    QMenu                   *m_transformsMenu;
    QMenu                   *m_existingLayersMenu;
    QMenu                   *m_recentFilesMenu;
    QMenu                   *m_recentTransformsMenu;
    QMenu                   *m_rightButtonMenu;
    QMenu                   *m_rightButtonLayerMenu;
    QMenu                   *m_rightButtonTransformsMenu;

    bool                     m_documentModified;
    bool                     m_openingAudioFile;
    bool                     m_abandoning;

    QPointer<PreferencesDialog> m_preferencesDialog;

    WaveFileModel *getMainModel();
    void createDocument();

    struct PaneConfiguration {
	PaneConfiguration(LayerFactory::LayerType _layer
			                       = LayerFactory::TimeRuler,
                          Model *_source = 0,
			  int _channel = -1) :
	    layer(_layer), sourceModel(_source), channel(_channel) { }
	LayerFactory::LayerType layer;
        Model *sourceModel;
	int channel;
    };

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

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

    typedef std::map<TransformName, QAction *> TransformActionReverseMap;
    TransformActionReverseMap m_transformActionsReverse;

    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 setupFileMenu();
    void setupEditMenu();
    void setupViewMenu();
    void setupPaneAndLayerMenus();
    void setupTransformsMenu();
    void setupHelpMenu();
    void setupExistingLayersMenu();
    void setupToolbars();

    Pane *addPaneToStack();

    void addPane(const PaneConfiguration &configuration, QString text);

    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();

    FileOpenStatus openSomeFile(QString path, QString location,
                                AudioFileOpenMode = AskUser);
    FileOpenStatus openAudioFile(QString path, QString location,
                                 AudioFileOpenMode = AskUser);
    FileOpenStatus openLayerFile(QString path, QString location);
    FileOpenStatus openSessionFile(QString path, QString location);

    QString getOpenFileName(FileFinder::FileType type);
    QString getSaveFileName(FileFinder::FileType type);
    void registerLastOpenedFilePath(FileFinder::FileType type, QString path);

    void createPlayTarget();

    void openHelpUrl(QString url);

    void toXml(QTextStream &stream);
};


#endif