Mercurial > hg > svgui
view view/ViewManager.h @ 171:78d523e8433e
* Fix signal name
author | Chris Cannam |
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date | Tue, 17 Oct 2006 18:54:43 +0000 |
parents | 9e6b3e239b9d |
children | dbd34ff746c7 |
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/* -*- 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 _VIEW_MANAGER_H_ #define _VIEW_MANAGER_H_ #include <QObject> #include <QTimer> #include <map> #include "base/Selection.h" #include "base/Command.h" #include "base/Clipboard.h" class AudioPlaySource; class Model; /** * The ViewManager manages properties that may need to be synchronised * between separate Views. For example, it handles signals associated * with changes to the global pan and zoom, and it handles selections. * * Views should be implemented in such a way as to work * correctly whether they are supplied with a ViewManager or not. */ class ViewManager : public QObject { Q_OBJECT public: ViewManager(); virtual ~ViewManager(); void setAudioPlaySource(AudioPlaySource *source); bool isPlaying() const; unsigned long getGlobalCentreFrame() const; unsigned long getGlobalZoom() const; unsigned long getPlaybackFrame() const; void setPlaybackFrame(unsigned long frame); bool haveInProgressSelection() const; const Selection &getInProgressSelection(bool &exclusive) const; void setInProgressSelection(const Selection &selection, bool exclusive); void clearInProgressSelection(); const MultiSelection &getSelection() const; const MultiSelection::SelectionList &getSelections() const; void setSelection(const Selection &selection); void addSelection(const Selection &selection); void removeSelection(const Selection &selection); void clearSelections(); /** * Return the selection that contains a given frame. * If defaultToFollowing is true, and if the frame is not in a * selected area, return the next selection after the given frame. * Return the empty selection if no appropriate selection is found. */ Selection getContainingSelection(size_t frame, bool defaultToFollowing) const; Clipboard &getClipboard() { return m_clipboard; } enum ToolMode { NavigateMode, SelectMode, EditMode, DrawMode }; ToolMode getToolMode() const { return m_toolMode; } void setToolMode(ToolMode mode); bool getPlayLoopMode() const { return m_playLoopMode; } void setPlayLoopMode(bool on); bool getPlaySelectionMode() const { return m_playSelectionMode; } void setPlaySelectionMode(bool on); size_t getPlaybackSampleRate() const; size_t getMainModelSampleRate() const { return m_mainModelSampleRate; } void setMainModelSampleRate(size_t sr) { m_mainModelSampleRate = sr; } enum OverlayMode { NoOverlays, BasicOverlays, AllOverlays }; void setOverlayMode(OverlayMode mode); OverlayMode getOverlayMode() const { return m_overlayMode; } void setZoomWheelsEnabled(bool enable); bool getZoomWheelsEnabled() const { return m_zoomWheelsEnabled; } signals: /** Emitted when a widget pans. The originator identifies the widget. */ void centreFrameChanged(void *originator, unsigned long frame, bool locked); /** Emitted when a widget zooms. The originator identifies the widget. */ void zoomLevelChanged(void *originator, unsigned long zoom, bool locked); /** Emitted when a widget zooms. */ void zoomLevelChanged(); /** Emitted when the playback frame changes. */ void playbackFrameChanged(unsigned long frame); /** Emitted when the output levels change. Values in range 0.0 -> 1.0. */ void outputLevelsChanged(float left, float right); /** Emitted when the selection has changed. */ void selectionChanged(); /** Emitted when the in-progress (rubberbanding) selection has changed. */ void inProgressSelectionChanged(); /** Emitted when the tool mode has been changed. */ void toolModeChanged(); /** Emitted when the play loop mode has been changed. */ void playLoopModeChanged(); /** Emitted when the play selection mode has been changed. */ void playSelectionModeChanged(); /** Emitted when the overlay mode has been changed. */ void overlayModeChanged(); /** Emitted when the zoom wheels have been toggled. */ void zoomWheelsEnabledChanged(); protected slots: void checkPlayStatus(); void playStatusChanged(bool playing); void considerSeek(void *, unsigned long, bool); void considerZoomChange(void *, unsigned long, bool); protected: AudioPlaySource *m_playSource; unsigned long m_globalCentreFrame; unsigned long m_globalZoom; mutable unsigned long m_playbackFrame; size_t m_mainModelSampleRate; float m_lastLeft; float m_lastRight; MultiSelection m_selections; Selection m_inProgressSelection; bool m_inProgressExclusive; Clipboard m_clipboard; ToolMode m_toolMode; bool m_playLoopMode; bool m_playSelectionMode; void setSelections(const MultiSelection &ms); void signalSelectionChange(); class SetSelectionCommand : public Command { public: SetSelectionCommand(ViewManager *vm, const MultiSelection &ms); virtual ~SetSelectionCommand(); virtual void execute(); virtual void unexecute(); virtual QString getName() const; protected: ViewManager *m_vm; MultiSelection m_oldSelection; MultiSelection m_newSelection; }; OverlayMode m_overlayMode; bool m_zoomWheelsEnabled; }; #endif