diff view/ViewManager.cpp @ 127:89c625dda204

* Reorganising code base.  This revision will not compile.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/view/ViewManager.cpp	Mon Jul 31 11:44:37 2006 +0000
@@ -0,0 +1,361 @@
+/* -*- 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.
+*/
+
+#include "ViewManager.h"
+#include "AudioPlaySource.h"
+#include "Model.h"
+#include "CommandHistory.h"
+
+#include <iostream>
+
+// #define DEBUG_VIEW_MANAGER 1
+
+ViewManager::ViewManager() :
+    m_playSource(0),
+    m_globalCentreFrame(0),
+    m_globalZoom(1024),
+    m_playbackFrame(0),
+    m_mainModelSampleRate(0),
+    m_lastLeft(0), 
+    m_lastRight(0),
+    m_inProgressExclusive(true),
+    m_toolMode(NavigateMode),
+    m_playLoopMode(false),
+    m_playSelectionMode(false),
+    m_overlayMode(BasicOverlays)
+{
+    connect(this, 
+	    SIGNAL(centreFrameChanged(void *, unsigned long, bool)),
+	    SLOT(considerSeek(void *, unsigned long, bool)));
+
+    connect(this, 
+	    SIGNAL(zoomLevelChanged(void *, unsigned long, bool)),
+	    SLOT(considerZoomChange(void *, unsigned long, bool)));
+}
+
+ViewManager::~ViewManager()
+{
+}
+
+unsigned long
+ViewManager::getGlobalCentreFrame() const
+{
+#ifdef DEBUG_VIEW_MANAGER
+    std::cout << "ViewManager::getGlobalCentreFrame: returning " << m_globalCentreFrame << std::endl;
+#endif
+    return m_globalCentreFrame;
+}
+
+unsigned long
+ViewManager::getGlobalZoom() const
+{
+#ifdef DEBUG_VIEW_MANAGER
+    std::cout << "ViewManager::getGlobalZoom: returning " << m_globalZoom << std::endl;
+#endif
+    return m_globalZoom;
+}
+
+unsigned long
+ViewManager::getPlaybackFrame() const
+{
+    if (m_playSource && m_playSource->isPlaying()) {
+	m_playbackFrame = m_playSource->getCurrentPlayingFrame();
+    }
+    return m_playbackFrame;
+}
+
+void
+ViewManager::setPlaybackFrame(unsigned long f)
+{
+    if (m_playbackFrame != f) {
+	m_playbackFrame = f;
+	emit playbackFrameChanged(f);
+	if (m_playSource && m_playSource->isPlaying()) {
+	    m_playSource->play(f);
+	}
+    }
+}
+
+bool
+ViewManager::haveInProgressSelection() const
+{
+    return !m_inProgressSelection.isEmpty();
+}
+
+const Selection &
+ViewManager::getInProgressSelection(bool &exclusive) const
+{
+    exclusive = m_inProgressExclusive;
+    return m_inProgressSelection;
+}
+
+void
+ViewManager::setInProgressSelection(const Selection &selection, bool exclusive)
+{
+    m_inProgressExclusive = exclusive;
+    m_inProgressSelection = selection;
+    if (exclusive) clearSelections();
+    emit inProgressSelectionChanged();
+}
+
+void
+ViewManager::clearInProgressSelection()
+{
+    m_inProgressSelection = Selection();
+    emit inProgressSelectionChanged();
+}
+
+const MultiSelection &
+ViewManager::getSelection() const
+{
+    return m_selections;
+}
+
+const MultiSelection::SelectionList &
+ViewManager::getSelections() const
+{
+    return m_selections.getSelections();
+}
+
+void
+ViewManager::setSelection(const Selection &selection)
+{
+    MultiSelection ms(m_selections);
+    ms.setSelection(selection);
+    setSelections(ms);
+}
+
+void
+ViewManager::addSelection(const Selection &selection)
+{
+    MultiSelection ms(m_selections);
+    ms.addSelection(selection);
+    setSelections(ms);
+}
+
+void
+ViewManager::removeSelection(const Selection &selection)
+{
+    MultiSelection ms(m_selections);
+    ms.removeSelection(selection);
+    setSelections(ms);
+}
+
+void
+ViewManager::clearSelections()
+{
+    MultiSelection ms(m_selections);
+    ms.clearSelections();
+    setSelections(ms);
+}
+
+void
+ViewManager::setSelections(const MultiSelection &ms)
+{
+    if (m_selections.getSelections() == ms.getSelections()) return;
+    SetSelectionCommand *command = new SetSelectionCommand(this, ms);
+    CommandHistory::getInstance()->addCommand(command);
+}
+
+void
+ViewManager::signalSelectionChange()
+{
+    emit selectionChanged();
+}
+
+ViewManager::SetSelectionCommand::SetSelectionCommand(ViewManager *vm,
+						      const MultiSelection &ms) :
+    m_vm(vm),
+    m_oldSelection(vm->m_selections),
+    m_newSelection(ms)
+{
+}
+
+ViewManager::SetSelectionCommand::~SetSelectionCommand() { }
+
+void
+ViewManager::SetSelectionCommand::execute()
+{
+    m_vm->m_selections = m_newSelection;
+    m_vm->signalSelectionChange();
+}
+
+void
+ViewManager::SetSelectionCommand::unexecute()
+{
+    m_vm->m_selections = m_oldSelection;
+    m_vm->signalSelectionChange();
+}
+
+QString
+ViewManager::SetSelectionCommand::getName() const
+{
+    if (m_newSelection.getSelections().empty()) return tr("Clear Selection");
+    else return tr("Select");
+}
+
+Selection
+ViewManager::getContainingSelection(size_t frame, bool defaultToFollowing) const
+{
+    return m_selections.getContainingSelection(frame, defaultToFollowing);
+}
+
+void
+ViewManager::setToolMode(ToolMode mode)
+{
+    m_toolMode = mode;
+
+    emit toolModeChanged();
+}
+
+void
+ViewManager::setPlayLoopMode(bool mode)
+{
+    m_playLoopMode = mode;
+
+    emit playLoopModeChanged();
+}
+
+void
+ViewManager::setPlaySelectionMode(bool mode)
+{
+    m_playSelectionMode = mode;
+
+    emit playSelectionModeChanged();
+}
+
+size_t
+ViewManager::getPlaybackSampleRate() const
+{
+    if (m_playSource) {
+	return m_playSource->getTargetSampleRate();
+    }
+    return 0;
+}
+
+void
+ViewManager::setAudioPlaySource(AudioPlaySource *source)
+{
+    if (!m_playSource) {
+	QTimer::singleShot(100, this, SLOT(checkPlayStatus()));
+    }
+    m_playSource = source;
+}
+
+void
+ViewManager::playStatusChanged(bool playing)
+{
+    checkPlayStatus();
+}
+
+void
+ViewManager::checkPlayStatus()
+{
+    if (m_playSource && m_playSource->isPlaying()) {
+
+	float left = 0, right = 0;
+	if (m_playSource->getOutputLevels(left, right)) {
+	    if (left != m_lastLeft || right != m_lastRight) {
+		emit outputLevelsChanged(left, right);
+		m_lastLeft = left;
+		m_lastRight = right;
+	    }
+	}
+
+	m_playbackFrame = m_playSource->getCurrentPlayingFrame();
+
+#ifdef DEBUG_VIEW_MANAGER
+	std::cout << "ViewManager::checkPlayStatus: Playing, frame " << m_playbackFrame << ", levels " << m_lastLeft << "," << m_lastRight << std::endl;
+#endif
+
+	emit playbackFrameChanged(m_playbackFrame);
+
+	QTimer::singleShot(20, this, SLOT(checkPlayStatus()));
+
+    } else {
+
+	QTimer::singleShot(100, this, SLOT(checkPlayStatus()));
+	
+	if (m_lastLeft != 0.0 || m_lastRight != 0.0) {
+	    emit outputLevelsChanged(0.0, 0.0);
+	    m_lastLeft = 0.0;
+	    m_lastRight = 0.0;
+	}
+
+#ifdef DEBUG_VIEW_MANAGER
+//	std::cout << "ViewManager::checkPlayStatus: Not playing" << std::endl;
+#endif
+    }
+}
+
+bool
+ViewManager::isPlaying() const
+{
+    return m_playSource && m_playSource->isPlaying();
+}
+
+void
+ViewManager::considerSeek(void *p, unsigned long f, bool locked)
+{
+    if (locked) {
+	m_globalCentreFrame = f;
+    }
+
+#ifdef DEBUG_VIEW_MANAGER 
+    std::cout << "ViewManager::considerSeek(" << p << ", " << f << ", " << locked << ")" << std::endl;
+#endif
+
+    if (p == this || !locked) return;
+
+    if (m_playSource && m_playSource->isPlaying()) {
+	unsigned long playFrame = m_playSource->getCurrentPlayingFrame();
+	unsigned long diff = std::max(f, playFrame) - std::min(f, playFrame);
+	if (diff > 20000) {
+	    m_playbackFrame = f;
+	    m_playSource->play(f);
+#ifdef DEBUG_VIEW_MANAGER 
+	    std::cout << "ViewManager::considerSeek: reseeking from " << playFrame << " to " << f << std::endl;
+#endif
+	}
+    } else {
+	m_playbackFrame = f; //!!! only if that view is in scroll mode?
+    }
+}
+
+void
+ViewManager::considerZoomChange(void *p, unsigned long z, bool locked)
+{
+    if (locked) {
+	m_globalZoom = z;
+    }
+
+#ifdef DEBUG_VIEW_MANAGER 
+    std::cout << "ViewManager::considerZoomChange(" << p << ", " << z << ", " << locked << ")" << std::endl;
+#endif
+}
+
+void
+ViewManager::setOverlayMode(OverlayMode mode)
+{
+    if (m_overlayMode != mode) {
+        m_overlayMode = mode;
+        emit overlayModeChanged();
+    }
+}
+
+#ifdef INCLUDE_MOCFILES
+#include "ViewManager.moc.cpp"
+#endif
+