Chris@127: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@127: 
Chris@127: /*
Chris@127:     Sonic Visualiser
Chris@127:     An audio file viewer and annotation editor.
Chris@127:     Centre for Digital Music, Queen Mary, University of London.
Chris@127:     This file copyright 2006 Chris Cannam.
Chris@127:     
Chris@127:     This program is free software; you can redistribute it and/or
Chris@127:     modify it under the terms of the GNU General Public License as
Chris@127:     published by the Free Software Foundation; either version 2 of the
Chris@127:     License, or (at your option) any later version.  See the file
Chris@127:     COPYING included with this distribution for more information.
Chris@127: */
Chris@127: 
Chris@127: #include "ViewManager.h"
Chris@127: #include "AudioPlaySource.h"
Chris@127: #include "Model.h"
Chris@127: #include "CommandHistory.h"
Chris@127: 
Chris@127: #include <iostream>
Chris@127: 
Chris@127: // #define DEBUG_VIEW_MANAGER 1
Chris@127: 
Chris@127: ViewManager::ViewManager() :
Chris@127:     m_playSource(0),
Chris@127:     m_globalCentreFrame(0),
Chris@127:     m_globalZoom(1024),
Chris@127:     m_playbackFrame(0),
Chris@127:     m_mainModelSampleRate(0),
Chris@127:     m_lastLeft(0), 
Chris@127:     m_lastRight(0),
Chris@127:     m_inProgressExclusive(true),
Chris@127:     m_toolMode(NavigateMode),
Chris@127:     m_playLoopMode(false),
Chris@127:     m_playSelectionMode(false),
Chris@127:     m_overlayMode(BasicOverlays)
Chris@127: {
Chris@127:     connect(this, 
Chris@127: 	    SIGNAL(centreFrameChanged(void *, unsigned long, bool)),
Chris@127: 	    SLOT(considerSeek(void *, unsigned long, bool)));
Chris@127: 
Chris@127:     connect(this, 
Chris@127: 	    SIGNAL(zoomLevelChanged(void *, unsigned long, bool)),
Chris@127: 	    SLOT(considerZoomChange(void *, unsigned long, bool)));
Chris@127: }
Chris@127: 
Chris@127: ViewManager::~ViewManager()
Chris@127: {
Chris@127: }
Chris@127: 
Chris@127: unsigned long
Chris@127: ViewManager::getGlobalCentreFrame() const
Chris@127: {
Chris@127: #ifdef DEBUG_VIEW_MANAGER
Chris@127:     std::cout << "ViewManager::getGlobalCentreFrame: returning " << m_globalCentreFrame << std::endl;
Chris@127: #endif
Chris@127:     return m_globalCentreFrame;
Chris@127: }
Chris@127: 
Chris@127: unsigned long
Chris@127: ViewManager::getGlobalZoom() const
Chris@127: {
Chris@127: #ifdef DEBUG_VIEW_MANAGER
Chris@127:     std::cout << "ViewManager::getGlobalZoom: returning " << m_globalZoom << std::endl;
Chris@127: #endif
Chris@127:     return m_globalZoom;
Chris@127: }
Chris@127: 
Chris@127: unsigned long
Chris@127: ViewManager::getPlaybackFrame() const
Chris@127: {
Chris@127:     if (m_playSource && m_playSource->isPlaying()) {
Chris@127: 	m_playbackFrame = m_playSource->getCurrentPlayingFrame();
Chris@127:     }
Chris@127:     return m_playbackFrame;
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::setPlaybackFrame(unsigned long f)
Chris@127: {
Chris@127:     if (m_playbackFrame != f) {
Chris@127: 	m_playbackFrame = f;
Chris@127: 	emit playbackFrameChanged(f);
Chris@127: 	if (m_playSource && m_playSource->isPlaying()) {
Chris@127: 	    m_playSource->play(f);
Chris@127: 	}
Chris@127:     }
Chris@127: }
Chris@127: 
Chris@127: bool
Chris@127: ViewManager::haveInProgressSelection() const
Chris@127: {
Chris@127:     return !m_inProgressSelection.isEmpty();
Chris@127: }
Chris@127: 
Chris@127: const Selection &
Chris@127: ViewManager::getInProgressSelection(bool &exclusive) const
Chris@127: {
Chris@127:     exclusive = m_inProgressExclusive;
Chris@127:     return m_inProgressSelection;
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::setInProgressSelection(const Selection &selection, bool exclusive)
Chris@127: {
Chris@127:     m_inProgressExclusive = exclusive;
Chris@127:     m_inProgressSelection = selection;
Chris@127:     if (exclusive) clearSelections();
Chris@127:     emit inProgressSelectionChanged();
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::clearInProgressSelection()
Chris@127: {
Chris@127:     m_inProgressSelection = Selection();
Chris@127:     emit inProgressSelectionChanged();
Chris@127: }
Chris@127: 
Chris@127: const MultiSelection &
Chris@127: ViewManager::getSelection() const
Chris@127: {
Chris@127:     return m_selections;
Chris@127: }
Chris@127: 
Chris@127: const MultiSelection::SelectionList &
Chris@127: ViewManager::getSelections() const
Chris@127: {
Chris@127:     return m_selections.getSelections();
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::setSelection(const Selection &selection)
Chris@127: {
Chris@127:     MultiSelection ms(m_selections);
Chris@127:     ms.setSelection(selection);
Chris@127:     setSelections(ms);
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::addSelection(const Selection &selection)
Chris@127: {
Chris@127:     MultiSelection ms(m_selections);
Chris@127:     ms.addSelection(selection);
Chris@127:     setSelections(ms);
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::removeSelection(const Selection &selection)
Chris@127: {
Chris@127:     MultiSelection ms(m_selections);
Chris@127:     ms.removeSelection(selection);
Chris@127:     setSelections(ms);
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::clearSelections()
Chris@127: {
Chris@127:     MultiSelection ms(m_selections);
Chris@127:     ms.clearSelections();
Chris@127:     setSelections(ms);
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::setSelections(const MultiSelection &ms)
Chris@127: {
Chris@127:     if (m_selections.getSelections() == ms.getSelections()) return;
Chris@127:     SetSelectionCommand *command = new SetSelectionCommand(this, ms);
Chris@127:     CommandHistory::getInstance()->addCommand(command);
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::signalSelectionChange()
Chris@127: {
Chris@127:     emit selectionChanged();
Chris@127: }
Chris@127: 
Chris@127: ViewManager::SetSelectionCommand::SetSelectionCommand(ViewManager *vm,
Chris@127: 						      const MultiSelection &ms) :
Chris@127:     m_vm(vm),
Chris@127:     m_oldSelection(vm->m_selections),
Chris@127:     m_newSelection(ms)
Chris@127: {
Chris@127: }
Chris@127: 
Chris@127: ViewManager::SetSelectionCommand::~SetSelectionCommand() { }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::SetSelectionCommand::execute()
Chris@127: {
Chris@127:     m_vm->m_selections = m_newSelection;
Chris@127:     m_vm->signalSelectionChange();
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::SetSelectionCommand::unexecute()
Chris@127: {
Chris@127:     m_vm->m_selections = m_oldSelection;
Chris@127:     m_vm->signalSelectionChange();
Chris@127: }
Chris@127: 
Chris@127: QString
Chris@127: ViewManager::SetSelectionCommand::getName() const
Chris@127: {
Chris@127:     if (m_newSelection.getSelections().empty()) return tr("Clear Selection");
Chris@127:     else return tr("Select");
Chris@127: }
Chris@127: 
Chris@127: Selection
Chris@127: ViewManager::getContainingSelection(size_t frame, bool defaultToFollowing) const
Chris@127: {
Chris@127:     return m_selections.getContainingSelection(frame, defaultToFollowing);
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::setToolMode(ToolMode mode)
Chris@127: {
Chris@127:     m_toolMode = mode;
Chris@127: 
Chris@127:     emit toolModeChanged();
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::setPlayLoopMode(bool mode)
Chris@127: {
Chris@127:     m_playLoopMode = mode;
Chris@127: 
Chris@127:     emit playLoopModeChanged();
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::setPlaySelectionMode(bool mode)
Chris@127: {
Chris@127:     m_playSelectionMode = mode;
Chris@127: 
Chris@127:     emit playSelectionModeChanged();
Chris@127: }
Chris@127: 
Chris@127: size_t
Chris@127: ViewManager::getPlaybackSampleRate() const
Chris@127: {
Chris@127:     if (m_playSource) {
Chris@127: 	return m_playSource->getTargetSampleRate();
Chris@127:     }
Chris@127:     return 0;
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::setAudioPlaySource(AudioPlaySource *source)
Chris@127: {
Chris@127:     if (!m_playSource) {
Chris@127: 	QTimer::singleShot(100, this, SLOT(checkPlayStatus()));
Chris@127:     }
Chris@127:     m_playSource = source;
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::playStatusChanged(bool playing)
Chris@127: {
Chris@127:     checkPlayStatus();
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::checkPlayStatus()
Chris@127: {
Chris@127:     if (m_playSource && m_playSource->isPlaying()) {
Chris@127: 
Chris@127: 	float left = 0, right = 0;
Chris@127: 	if (m_playSource->getOutputLevels(left, right)) {
Chris@127: 	    if (left != m_lastLeft || right != m_lastRight) {
Chris@127: 		emit outputLevelsChanged(left, right);
Chris@127: 		m_lastLeft = left;
Chris@127: 		m_lastRight = right;
Chris@127: 	    }
Chris@127: 	}
Chris@127: 
Chris@127: 	m_playbackFrame = m_playSource->getCurrentPlayingFrame();
Chris@127: 
Chris@127: #ifdef DEBUG_VIEW_MANAGER
Chris@127: 	std::cout << "ViewManager::checkPlayStatus: Playing, frame " << m_playbackFrame << ", levels " << m_lastLeft << "," << m_lastRight << std::endl;
Chris@127: #endif
Chris@127: 
Chris@127: 	emit playbackFrameChanged(m_playbackFrame);
Chris@127: 
Chris@127: 	QTimer::singleShot(20, this, SLOT(checkPlayStatus()));
Chris@127: 
Chris@127:     } else {
Chris@127: 
Chris@127: 	QTimer::singleShot(100, this, SLOT(checkPlayStatus()));
Chris@127: 	
Chris@127: 	if (m_lastLeft != 0.0 || m_lastRight != 0.0) {
Chris@127: 	    emit outputLevelsChanged(0.0, 0.0);
Chris@127: 	    m_lastLeft = 0.0;
Chris@127: 	    m_lastRight = 0.0;
Chris@127: 	}
Chris@127: 
Chris@127: #ifdef DEBUG_VIEW_MANAGER
Chris@127: //	std::cout << "ViewManager::checkPlayStatus: Not playing" << std::endl;
Chris@127: #endif
Chris@127:     }
Chris@127: }
Chris@127: 
Chris@127: bool
Chris@127: ViewManager::isPlaying() const
Chris@127: {
Chris@127:     return m_playSource && m_playSource->isPlaying();
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::considerSeek(void *p, unsigned long f, bool locked)
Chris@127: {
Chris@127:     if (locked) {
Chris@127: 	m_globalCentreFrame = f;
Chris@127:     }
Chris@127: 
Chris@127: #ifdef DEBUG_VIEW_MANAGER 
Chris@127:     std::cout << "ViewManager::considerSeek(" << p << ", " << f << ", " << locked << ")" << std::endl;
Chris@127: #endif
Chris@127: 
Chris@127:     if (p == this || !locked) return;
Chris@127: 
Chris@127:     if (m_playSource && m_playSource->isPlaying()) {
Chris@127: 	unsigned long playFrame = m_playSource->getCurrentPlayingFrame();
Chris@127: 	unsigned long diff = std::max(f, playFrame) - std::min(f, playFrame);
Chris@127: 	if (diff > 20000) {
Chris@127: 	    m_playbackFrame = f;
Chris@127: 	    m_playSource->play(f);
Chris@127: #ifdef DEBUG_VIEW_MANAGER 
Chris@127: 	    std::cout << "ViewManager::considerSeek: reseeking from " << playFrame << " to " << f << std::endl;
Chris@127: #endif
Chris@127: 	}
Chris@127:     } else {
Chris@127: 	m_playbackFrame = f; //!!! only if that view is in scroll mode?
Chris@127:     }
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::considerZoomChange(void *p, unsigned long z, bool locked)
Chris@127: {
Chris@127:     if (locked) {
Chris@127: 	m_globalZoom = z;
Chris@127:     }
Chris@127: 
Chris@127: #ifdef DEBUG_VIEW_MANAGER 
Chris@127:     std::cout << "ViewManager::considerZoomChange(" << p << ", " << z << ", " << locked << ")" << std::endl;
Chris@127: #endif
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::setOverlayMode(OverlayMode mode)
Chris@127: {
Chris@127:     if (m_overlayMode != mode) {
Chris@127:         m_overlayMode = mode;
Chris@127:         emit overlayModeChanged();
Chris@127:     }
Chris@127: }
Chris@127: 
Chris@127: #ifdef INCLUDE_MOCFILES
Chris@127: #include "ViewManager.moc.cpp"
Chris@127: #endif
Chris@127: