Chris@49: /* -*- c-basic-offset: 4 indent-tabs-mode: nil -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@52:     Sonic Visualiser
Chris@52:     An audio file viewer and annotation editor.
Chris@52:     Centre for Digital Music, Queen Mary, University of London.
Chris@52:     This file copyright 2006 Chris Cannam.
Chris@0:     
Chris@52:     This program is free software; you can redistribute it and/or
Chris@52:     modify it under the terms of the GNU General Public License as
Chris@52:     published by the Free Software Foundation; either version 2 of the
Chris@52:     License, or (at your option) any later version.  See the file
Chris@52:     COPYING included with this distribution for more information.
Chris@0: */
Chris@0: 
Chris@0: #include "ViewManager.h"
Chris@0: #include "AudioPlaySource.h"
Chris@0: #include "Model.h"
Chris@45: #include "CommandHistory.h"
Chris@0: 
Chris@0: #include <iostream>
Chris@0: 
Martin@54: // #define DEBUG_VIEW_MANAGER 1
Chris@0: 
Chris@0: ViewManager::ViewManager() :
Chris@0:     m_playSource(0),
Chris@0:     m_globalCentreFrame(0),
Chris@0:     m_globalZoom(1024),
Chris@24:     m_playbackFrame(0),
Chris@42:     m_mainModelSampleRate(0),
Chris@0:     m_lastLeft(0), 
Chris@8:     m_lastRight(0),
Chris@8:     m_inProgressExclusive(true),
Chris@9:     m_toolMode(NavigateMode),
Chris@9:     m_playLoopMode(false),
Chris@65:     m_playSelectionMode(false),
Chris@65:     m_overlayMode(BasicOverlays)
Chris@0: {
Chris@0:     connect(this, 
Chris@0: 	    SIGNAL(centreFrameChanged(void *, unsigned long, bool)),
Chris@0: 	    SLOT(considerSeek(void *, unsigned long, bool)));
Chris@0: 
Chris@0:     connect(this, 
Chris@0: 	    SIGNAL(zoomLevelChanged(void *, unsigned long, bool)),
Chris@0: 	    SLOT(considerZoomChange(void *, unsigned long, bool)));
Chris@0: }
Chris@0: 
Chris@0: unsigned long
Chris@0: ViewManager::getGlobalCentreFrame() const
Chris@0: {
Chris@0: #ifdef DEBUG_VIEW_MANAGER
Chris@0:     std::cout << "ViewManager::getGlobalCentreFrame: returning " << m_globalCentreFrame << std::endl;
Chris@0: #endif
Chris@0:     return m_globalCentreFrame;
Chris@0: }
Chris@0: 
Chris@0: unsigned long
Chris@0: ViewManager::getGlobalZoom() const
Chris@0: {
Chris@0: #ifdef DEBUG_VIEW_MANAGER
Chris@0:     std::cout << "ViewManager::getGlobalZoom: returning " << m_globalZoom << std::endl;
Chris@0: #endif
Chris@0:     return m_globalZoom;
Chris@0: }
Chris@0: 
Chris@24: unsigned long
Chris@24: ViewManager::getPlaybackFrame() const
Chris@24: {
Chris@24:     if (m_playSource && m_playSource->isPlaying()) {
Chris@24: 	m_playbackFrame = m_playSource->getCurrentPlayingFrame();
Chris@24:     }
Chris@24:     return m_playbackFrame;
Chris@24: }
Chris@24: 
Chris@24: void
Chris@24: ViewManager::setPlaybackFrame(unsigned long f)
Chris@24: {
Chris@24:     if (m_playbackFrame != f) {
Chris@24: 	m_playbackFrame = f;
Chris@60: 	emit playbackFrameChanged(f);
Chris@24: 	if (m_playSource && m_playSource->isPlaying()) {
Chris@24: 	    m_playSource->play(f);
Chris@24: 	}
Chris@24:     }
Chris@24: }
Chris@24: 
Chris@8: bool
Chris@8: ViewManager::haveInProgressSelection() const
Chris@8: {
Chris@8:     return !m_inProgressSelection.isEmpty();
Chris@8: }
Chris@8: 
Chris@8: const Selection &
Chris@8: ViewManager::getInProgressSelection(bool &exclusive) const
Chris@8: {
Chris@8:     exclusive = m_inProgressExclusive;
Chris@8:     return m_inProgressSelection;
Chris@8: }
Chris@8: 
Chris@8: void
Chris@8: ViewManager::setInProgressSelection(const Selection &selection, bool exclusive)
Chris@8: {
Chris@8:     m_inProgressExclusive = exclusive;
Chris@8:     m_inProgressSelection = selection;
Chris@8:     if (exclusive) clearSelections();
Chris@9:     emit inProgressSelectionChanged();
Chris@8: }
Chris@8: 
Chris@8: void
Chris@8: ViewManager::clearInProgressSelection()
Chris@8: {
Chris@8:     m_inProgressSelection = Selection();
Chris@9:     emit inProgressSelectionChanged();
Chris@8: }
Chris@8: 
Chris@34: const MultiSelection &
Chris@34: ViewManager::getSelection() const
Chris@34: {
Chris@34:     return m_selections;
Chris@34: }
Chris@34: 
Chris@24: const MultiSelection::SelectionList &
Chris@8: ViewManager::getSelections() const
Chris@8: {
Chris@24:     return m_selections.getSelections();
Chris@8: }
Chris@8: 
Chris@8: void
Chris@8: ViewManager::setSelection(const Selection &selection)
Chris@8: {
Chris@45:     MultiSelection ms(m_selections);
Chris@45:     ms.setSelection(selection);
Chris@45:     setSelections(ms);
Chris@8: }
Chris@8: 
Chris@8: void
Chris@8: ViewManager::addSelection(const Selection &selection)
Chris@8: {
Chris@45:     MultiSelection ms(m_selections);
Chris@45:     ms.addSelection(selection);
Chris@45:     setSelections(ms);
Chris@8: }
Chris@8: 
Chris@8: void
Chris@8: ViewManager::removeSelection(const Selection &selection)
Chris@8: {
Chris@45:     MultiSelection ms(m_selections);
Chris@45:     ms.removeSelection(selection);
Chris@45:     setSelections(ms);
Chris@8: }
Chris@8: 
Chris@8: void
Chris@8: ViewManager::clearSelections()
Chris@8: {
Chris@45:     MultiSelection ms(m_selections);
Chris@45:     ms.clearSelections();
Chris@45:     setSelections(ms);
Chris@45: }
Chris@45: 
Chris@45: void
Chris@45: ViewManager::setSelections(const MultiSelection &ms)
Chris@45: {
Chris@45:     if (m_selections.getSelections() == ms.getSelections()) return;
Chris@45:     SetSelectionCommand *command = new SetSelectionCommand(this, ms);
Chris@45:     CommandHistory::getInstance()->addCommand(command);
Chris@45: }
Chris@45: 
Chris@45: void
Chris@45: ViewManager::signalSelectionChange()
Chris@45: {
Chris@24:     emit selectionChanged();
Chris@8: }
Chris@8: 
Chris@45: ViewManager::SetSelectionCommand::SetSelectionCommand(ViewManager *vm,
Chris@45: 						      const MultiSelection &ms) :
Chris@45:     m_vm(vm),
Chris@45:     m_oldSelection(vm->m_selections),
Chris@45:     m_newSelection(ms)
Chris@45: {
Chris@45: }
Chris@45: 
Chris@45: ViewManager::SetSelectionCommand::~SetSelectionCommand() { }
Chris@45: 
Chris@45: void
Chris@45: ViewManager::SetSelectionCommand::execute()
Chris@45: {
Chris@45:     m_vm->m_selections = m_newSelection;
Chris@45:     m_vm->signalSelectionChange();
Chris@45: }
Chris@45: 
Chris@45: void
Chris@45: ViewManager::SetSelectionCommand::unexecute()
Chris@45: {
Chris@45:     m_vm->m_selections = m_oldSelection;
Chris@45:     m_vm->signalSelectionChange();
Chris@45: }
Chris@45: 
Chris@45: QString
Chris@45: ViewManager::SetSelectionCommand::getName() const
Chris@45: {
Chris@45:     if (m_newSelection.getSelections().empty()) return tr("Clear Selection");
Chris@45:     else return tr("Select");
Chris@45: }
Chris@45: 
Chris@9: Selection
Chris@36: ViewManager::getContainingSelection(size_t frame, bool defaultToFollowing) const
Chris@9: {
Chris@24:     return m_selections.getContainingSelection(frame, defaultToFollowing);
Chris@9: }
Chris@9: 
Chris@8: void
Chris@8: ViewManager::setToolMode(ToolMode mode)
Chris@8: {
Chris@8:     m_toolMode = mode;
Chris@8: 
Chris@8:     emit toolModeChanged();
Chris@8: }
Chris@8: 
Chris@0: void
Chris@9: ViewManager::setPlayLoopMode(bool mode)
Chris@9: {
Chris@9:     m_playLoopMode = mode;
Chris@9: 
Chris@9:     emit playLoopModeChanged();
Chris@9: }
Chris@9: 
Chris@9: void
Chris@9: ViewManager::setPlaySelectionMode(bool mode)
Chris@9: {
Chris@9:     m_playSelectionMode = mode;
Chris@9: 
Chris@9:     emit playSelectionModeChanged();
Chris@9: }
Chris@9: 
Chris@40: size_t
Chris@40: ViewManager::getPlaybackSampleRate() const
Chris@40: {
Chris@40:     if (m_playSource) {
Chris@40: 	return m_playSource->getTargetSampleRate();
Chris@40:     }
Chris@40:     return 0;
Chris@40: }
Chris@40: 
Chris@9: void
Chris@0: ViewManager::setAudioPlaySource(AudioPlaySource *source)
Chris@0: {
Chris@0:     if (!m_playSource) {
Chris@0: 	QTimer::singleShot(100, this, SLOT(checkPlayStatus()));
Chris@0:     }
Chris@0:     m_playSource = source;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@10: ViewManager::playStatusChanged(bool playing)
Chris@10: {
Chris@10:     checkPlayStatus();
Chris@10: }
Chris@10: 
Chris@10: void
Chris@0: ViewManager::checkPlayStatus()
Chris@0: {
Chris@0:     if (m_playSource && m_playSource->isPlaying()) {
Chris@0: 
Chris@0: 	float left = 0, right = 0;
Chris@0: 	if (m_playSource->getOutputLevels(left, right)) {
Chris@0: 	    if (left != m_lastLeft || right != m_lastRight) {
Chris@0: 		emit outputLevelsChanged(left, right);
Chris@0: 		m_lastLeft = left;
Chris@0: 		m_lastRight = right;
Chris@0: 	    }
Chris@0: 	}
Chris@0: 
Chris@24: 	m_playbackFrame = m_playSource->getCurrentPlayingFrame();
Chris@0: 
Chris@0: #ifdef DEBUG_VIEW_MANAGER
Chris@24: 	std::cout << "ViewManager::checkPlayStatus: Playing, frame " << m_playbackFrame << ", levels " << m_lastLeft << "," << m_lastRight << std::endl;
Chris@0: #endif
Chris@0: 
Chris@24: 	emit playbackFrameChanged(m_playbackFrame);
Chris@0: 
Chris@0: 	QTimer::singleShot(20, this, SLOT(checkPlayStatus()));
Chris@0: 
Chris@0:     } else {
Chris@0: 
Chris@0: 	QTimer::singleShot(100, this, SLOT(checkPlayStatus()));
Chris@0: 	
Chris@0: 	if (m_lastLeft != 0.0 || m_lastRight != 0.0) {
Chris@0: 	    emit outputLevelsChanged(0.0, 0.0);
Chris@0: 	    m_lastLeft = 0.0;
Chris@0: 	    m_lastRight = 0.0;
Chris@0: 	}
Chris@0: 
Chris@0: #ifdef DEBUG_VIEW_MANAGER
Chris@0: //	std::cout << "ViewManager::checkPlayStatus: Not playing" << std::endl;
Chris@0: #endif
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@8: bool
Chris@8: ViewManager::isPlaying() const
Chris@8: {
Chris@8:     return m_playSource && m_playSource->isPlaying();
Chris@8: }
Chris@8: 
Chris@0: void
Chris@0: ViewManager::considerSeek(void *p, unsigned long f, bool locked)
Chris@0: {
Chris@0:     if (locked) {
Chris@0: 	m_globalCentreFrame = f;
Chris@0:     }
Chris@0: 
Chris@0: #ifdef DEBUG_VIEW_MANAGER 
Chris@0:     std::cout << "ViewManager::considerSeek(" << p << ", " << f << ", " << locked << ")" << std::endl;
Chris@0: #endif
Chris@0: 
Chris@0:     if (p == this || !locked) return;
Chris@0: 
Chris@0:     if (m_playSource && m_playSource->isPlaying()) {
Chris@0: 	unsigned long playFrame = m_playSource->getCurrentPlayingFrame();
Chris@0: 	unsigned long diff = std::max(f, playFrame) - std::min(f, playFrame);
Chris@0: 	if (diff > 20000) {
Chris@24: 	    m_playbackFrame = f;
Chris@0: 	    m_playSource->play(f);
Chris@0: #ifdef DEBUG_VIEW_MANAGER 
Chris@0: 	    std::cout << "ViewManager::considerSeek: reseeking from " << playFrame << " to " << f << std::endl;
Chris@0: #endif
Chris@0: 	}
Chris@24:     } else {
Chris@24: 	m_playbackFrame = f; //!!! only if that view is in scroll mode?
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: ViewManager::considerZoomChange(void *p, unsigned long z, bool locked)
Chris@0: {
Chris@0:     if (locked) {
Chris@0: 	m_globalZoom = z;
Chris@0:     }
Chris@0: 
Chris@0: #ifdef DEBUG_VIEW_MANAGER 
Chris@0:     std::cout << "ViewManager::considerZoomChange(" << p << ", " << z << ", " << locked << ")" << std::endl;
Chris@0: #endif
Chris@0: }
Chris@0: 
Chris@65: void
Chris@65: ViewManager::setOverlayMode(OverlayMode mode)
Chris@65: {
Chris@65:     if (m_overlayMode != mode) {
Chris@65:         m_overlayMode = mode;
Chris@65:         emit overlayModeChanged();
Chris@65:     }
Chris@65: }
Chris@65: 
Chris@0: #ifdef INCLUDE_MOCFILES
Chris@0: #include "ViewManager.moc.cpp"
Chris@0: #endif
Chris@0: