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@182:     This file copyright 2006 Chris Cannam and QMUL.
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@128: #include "base/AudioPlaySource.h"
Chris@502: #include "base/RealTime.h"
Chris@128: #include "data/model/Model.h"
Chris@376: #include "widgets/CommandHistory.h"
Chris@211: #include "View.h"
Chris@503: #include "Overview.h"
Chris@127: 
Chris@133: #include <QSettings>
Chris@292: #include <QApplication>
Chris@133: 
Chris@127: #include <iostream>
Chris@127: 
Chris@643: //#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@301:     m_playbackModel(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@301:     m_playSoloMode(false),
Chris@314:     m_alignMode(false),
Chris@607:     m_overlayMode(MinimalOverlays),
Chris@292:     m_zoomWheelsEnabled(true),
Chris@607:     m_showCentreLine(true),
Chris@326:     m_illuminateLocalFeatures(true),
Chris@326:     m_showWorkTitle(false),
Chris@292:     m_lightPalette(QApplication::palette()),
Chris@292:     m_darkPalette(QApplication::palette())
Chris@127: {
Chris@133:     QSettings settings;
Chris@133:     settings.beginGroup("MainWindow");
Chris@133:     m_overlayMode = OverlayMode
Chris@133:         (settings.value("overlay-mode", int(m_overlayMode)).toInt());
Chris@607: 
Chris@607:     if (m_overlayMode != NoOverlays &&
Chris@607:         m_overlayMode != MinimalOverlays &&
Chris@607:         m_overlayMode != AllOverlays) {
Chris@607:         m_overlayMode = MinimalOverlays;
Chris@607:     }
Chris@607: 
Chris@133:     m_zoomWheelsEnabled =
Chris@133:         settings.value("zoom-wheels-enabled", m_zoomWheelsEnabled).toBool();
Chris@607:     m_showCentreLine =
Chris@607:         settings.value("show-centre-line", m_showCentreLine).toBool();
Chris@133:     settings.endGroup();
Chris@292: 
Chris@292:     if (getGlobalDarkBackground()) {
Chris@343: /*
Chris@682:         cerr << "dark palette:" << endl;
Chris@682:         cerr << "window = " << QApplication::palette().color(QPalette::Window).name() << endl;
Chris@682:         cerr << "windowtext = " << QApplication::palette().color(QPalette::WindowText).name() << endl;
Chris@682:         cerr << "base = " << QApplication::palette().color(QPalette::Base).name() << endl;
Chris@682:         cerr << "alternatebase = " << QApplication::palette().color(QPalette::AlternateBase).name() << endl;
Chris@682:         cerr << "text = " << QApplication::palette().color(QPalette::Text).name() << endl;
Chris@682:         cerr << "button = " << QApplication::palette().color(QPalette::Button).name() << endl;
Chris@682:         cerr << "buttontext = " << QApplication::palette().color(QPalette::ButtonText).name() << endl;
Chris@682:         cerr << "brighttext = " << QApplication::palette().color(QPalette::BrightText).name() << endl;
Chris@682:         cerr << "light = " << QApplication::palette().color(QPalette::Light).name() << endl;
Chris@682:         cerr << "dark = " << QApplication::palette().color(QPalette::Dark).name() << endl;
Chris@682:         cerr << "mid = " << QApplication::palette().color(QPalette::Mid).name() << endl;
Chris@343: */
Chris@293:         m_lightPalette = QPalette(QColor("#000000"),  // WindowText
Chris@293:                                   QColor("#dddfe4"),  // Button
Chris@293:                                   QColor("#ffffff"),  // Light
Chris@293:                                   QColor("#555555"),  // Dark
Chris@293:                                   QColor("#c7c7c7"),  // Mid
Chris@293:                                   QColor("#000000"),  // Text
Chris@293:                                   QColor("#ffffff"),  // BrightText
Chris@293:                                   QColor("#ffffff"),  // Base
Chris@293:                                   QColor("#efefef")); // Window
Chris@293:                                   
Chris@293: 
Chris@292:     } else {
Chris@343: /*
Chris@682:         cerr << "light palette:" << endl;
Chris@682:         cerr << "window = " << QApplication::palette().color(QPalette::Window).name() << endl;
Chris@682:         cerr << "windowtext = " << QApplication::palette().color(QPalette::WindowText).name() << endl;
Chris@682:         cerr << "base = " << QApplication::palette().color(QPalette::Base).name() << endl;
Chris@682:         cerr << "alternatebase = " << QApplication::palette().color(QPalette::AlternateBase).name() << endl;
Chris@682:         cerr << "text = " << QApplication::palette().color(QPalette::Text).name() << endl;
Chris@682:         cerr << "button = " << QApplication::palette().color(QPalette::Button).name() << endl;
Chris@682:         cerr << "buttontext = " << QApplication::palette().color(QPalette::ButtonText).name() << endl;
Chris@682:         cerr << "brighttext = " << QApplication::palette().color(QPalette::BrightText).name() << endl;
Chris@682:         cerr << "light = " << QApplication::palette().color(QPalette::Light).name() << endl;
Chris@682:         cerr << "dark = " << QApplication::palette().color(QPalette::Dark).name() << endl;
Chris@682:         cerr << "mid = " << QApplication::palette().color(QPalette::Mid).name() << endl;
Chris@343: */
Chris@293:         m_darkPalette = QPalette(QColor("#ffffff"),  // WindowText
Chris@293:                                  QColor("#3e3e3e"),  // Button
Chris@293:                                  QColor("#808080"),  // Light
Chris@293:                                  QColor("#1e1e1e"),  // Dark
Chris@293:                                  QColor("#404040"),  // Mid
Chris@293:                                  QColor("#ffffff"),  // Text
Chris@293:                                  QColor("#ffffff"),  // BrightText
Chris@293:                                  QColor("#000000"),  // Base
Chris@293:                                  QColor("#202020")); // Window
Chris@292:     }
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@682:     cerr << "ViewManager::getGlobalCentreFrame: returning " << m_globalCentreFrame << endl;
Chris@127: #endif
Chris@127:     return m_globalCentreFrame;
Chris@127: }
Chris@127: 
Chris@180: void
Chris@180: ViewManager::setGlobalCentreFrame(unsigned long f)
Chris@180: {
Chris@180: #ifdef DEBUG_VIEW_MANAGER
Chris@682:     cerr << "ViewManager::setGlobalCentreFrame to " << f << endl;
Chris@180: #endif
Chris@180:     m_globalCentreFrame = f;
Chris@211:     emit globalCentreFrameChanged(f);
Chris@180: }
Chris@180: 
Chris@127: unsigned long
Chris@127: ViewManager::getGlobalZoom() const
Chris@127: {
Chris@127: #ifdef DEBUG_VIEW_MANAGER
Chris@682:     cerr << "ViewManager::getGlobalZoom: returning " << m_globalZoom << 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@301: Model *
Chris@301: ViewManager::getPlaybackModel() const
Chris@301: {
Chris@301:     return m_playbackModel;
Chris@301: }
Chris@301: 
Chris@301: void
Chris@301: ViewManager::setPlaybackModel(Model *model)
Chris@301: {
Chris@301:     m_playbackModel = model;
Chris@301: }
Chris@301: 
Chris@333: size_t
Chris@333: ViewManager::alignPlaybackFrameToReference(size_t frame) const
Chris@333: {
Chris@333:     if (!m_playbackModel) return frame;
Chris@333:     else return m_playbackModel->alignToReference(frame);
Chris@333: }
Chris@333: 
Chris@333: size_t
Chris@333: ViewManager::alignReferenceToPlaybackFrame(size_t frame) const
Chris@333: {
Chris@333:     if (!m_playbackModel) return frame;
Chris@333:     else return m_playbackModel->alignFromReference(frame);
Chris@333: }
Chris@333: 
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@271: size_t
Chris@271: ViewManager::constrainFrameToSelection(size_t frame) const
Chris@271: {
Chris@271:     MultiSelection::SelectionList sl = getSelections();
Chris@271:     if (sl.empty()) return frame;
Chris@271: 
Chris@368:     for (MultiSelection::SelectionList::const_iterator i = sl.begin();
Chris@368:          i != sl.end(); ++i) {
Chris@368: 
Chris@368:         if (frame < i->getEndFrame()) {
Chris@368:             if (frame < i->getStartFrame()) {
Chris@368:                 return i->getStartFrame();
Chris@368:             } else {
Chris@368:                 return frame;
Chris@368:             }
Chris@368:         }
Chris@271:     }
Chris@271: 
Chris@368:     return sl.begin()->getStartFrame();
Chris@271: }
Chris@271: 
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@502:     if (m_newSelection.getSelections().size() > 1) return tr("Select Multiple Regions");
Chris@502:     else return tr("Select Region");
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@502: 
Chris@502:     switch (mode) {
Chris@502:     case NavigateMode: emit activity(tr("Enter Navigate mode")); break;
Chris@502:     case SelectMode: emit activity(tr("Enter Select mode")); break;
Chris@502:     case EditMode: emit activity(tr("Enter Edit mode")); break;
Chris@502:     case DrawMode: emit activity(tr("Enter Draw mode")); break;
Chris@502:     case EraseMode: emit activity(tr("Enter Erase mode")); break;
Chris@502:     case MeasureMode: emit activity(tr("Enter Measure mode")); break;
gyorgyf@645:     case NoteEditMode: emit activity(tr("Enter NoteEdit mode")); break; // GF: NoteEditMode activity (I'm not yet certain why we need to emit this.)
Chris@502:     };
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::setPlayLoopMode(bool mode)
Chris@127: {
Chris@177:     if (m_playLoopMode != mode) {
Chris@127: 
Chris@177:         m_playLoopMode = mode;
Chris@177: 
Chris@177:         emit playLoopModeChanged();
Chris@177:         emit playLoopModeChanged(mode);
Chris@502: 
Chris@502:         if (mode) emit activity(tr("Switch on Loop mode"));
Chris@502:         else emit activity(tr("Switch off Loop mode"));
Chris@177:     }
Chris@127: }
Chris@127: 
Chris@127: void
Chris@127: ViewManager::setPlaySelectionMode(bool mode)
Chris@127: {
Chris@177:     if (m_playSelectionMode != mode) {
Chris@127: 
Chris@177:         m_playSelectionMode = mode;
Chris@177: 
Chris@177:         emit playSelectionModeChanged();
Chris@177:         emit playSelectionModeChanged(mode);
Chris@502: 
Chris@502:         if (mode) emit activity(tr("Switch on Play Selection mode"));
Chris@502:         else emit activity(tr("Switch off Play Selection mode"));
Chris@177:     }
Chris@127: }
Chris@127: 
Chris@301: void
Chris@301: ViewManager::setPlaySoloMode(bool mode)
Chris@301: {
Chris@301:     if (m_playSoloMode != mode) {
Chris@301: 
Chris@301:         m_playSoloMode = mode;
Chris@301: 
Chris@301:         emit playSoloModeChanged();
Chris@301:         emit playSoloModeChanged(mode);
Chris@502: 
Chris@502:         if (mode) emit activity(tr("Switch on Play Solo mode"));
Chris@502:         else emit activity(tr("Switch off Play Solo mode"));
Chris@301:     }
Chris@301: }
Chris@301: 
Chris@314: void
Chris@314: ViewManager::setAlignMode(bool mode)
Chris@314: {
Chris@314:     if (m_alignMode != mode) {
Chris@314: 
Chris@314:         m_alignMode = mode;
Chris@314: 
Chris@314:         emit alignModeChanged();
Chris@314:         emit alignModeChanged(mode);
Chris@502: 
Chris@502:         if (mode) emit activity(tr("Switch on Alignment mode"));
Chris@502:         else emit activity(tr("Switch off Alignment mode"));
Chris@314:     }
Chris@314: }
Chris@314: 
Chris@224: size_t 
Chris@224: ViewManager::getPlaybackSampleRate() const
Chris@224: {
Chris@224:     if (m_playSource) {
Chris@224:         return m_playSource->getSourceSampleRate();
Chris@224:     }
Chris@224:     return 0;
Chris@224: }
Chris@224: 
Chris@127: size_t
Chris@224: ViewManager::getOutputSampleRate() 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@248: ViewManager::playStatusChanged(bool /* playing */)
Chris@127: {
Chris@689: #ifdef DEBUG_VIEW_MANAGER
Chris@689:     cerr << "ViewManager::playStatusChanged" << endl;
Chris@689: #endif
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@682: 	cerr << "ViewManager::checkPlayStatus: Playing, frame " << m_playbackFrame << ", levels " << m_lastLeft << "," << m_lastRight << 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: 	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@689: 	cerr << "ViewManager::checkPlayStatus: Not playing" << 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@211: ViewManager::viewCentreFrameChanged(unsigned long f, bool locked,
Chris@211:                                     PlaybackFollowMode mode)
Chris@127: {
Chris@211:     View *v = dynamic_cast<View *>(sender());
Chris@211: 
Chris@398: #ifdef DEBUG_VIEW_MANAGER
Chris@682:     cerr << "ViewManager::viewCentreFrameChanged(" << f << ", " << locked << ", " << mode << "), view is " << v << endl;
Chris@398: #endif
Chris@394: 
Chris@127:     if (locked) {
Chris@211:         m_globalCentreFrame = f;
Chris@211:         emit globalCentreFrameChanged(f);
Chris@211:     } else {
Chris@211:         if (v) emit viewCentreFrameChanged(v, f);
Chris@127:     }
Chris@127: 
Chris@503:     if (!dynamic_cast<Overview *>(v) || (mode != PlaybackIgnore)) {
Chris@527:         if (m_mainModelSampleRate != 0) {
Chris@527:             emit activity(tr("Scroll to %1")
Chris@527:                           .arg(RealTime::frame2RealTime
Chris@527:                                (f, m_mainModelSampleRate).toText().c_str()));
Chris@527:         }
Chris@503:     }
Chris@502: 
Chris@211:     if (mode == PlaybackIgnore) {
Chris@211:         return;
Chris@211:     }
Chris@211: 
Chris@211:     seek(f);
Chris@211: }
Chris@211: 
Chris@211: void
Chris@211: ViewManager::seek(unsigned long f)
Chris@211: {
Chris@127: #ifdef DEBUG_VIEW_MANAGER 
Chris@682:     cerr << "ViewManager::seek(" << f << ")" << endl;
Chris@127: #endif
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@682: 	    cerr << "ViewManager::considerSeek: reseeking from " << playFrame << " to " << f << endl;
Chris@127: #endif
Chris@211:             emit playbackFrameChanged(f);
Chris@127: 	}
Chris@127:     } else {
Chris@211:         if (m_playbackFrame != f) {
Chris@211:             m_playbackFrame = f;
Chris@211:             emit playbackFrameChanged(f);
Chris@211:         }
Chris@127:     }
Chris@127: }
Chris@127: 
Chris@127: void
Chris@222: ViewManager::viewZoomLevelChanged(unsigned long z, bool locked)
Chris@127: {
Chris@222:     View *v = dynamic_cast<View *>(sender());
Chris@222: 
Chris@222:     if (!v) {
Chris@587:         SVDEBUG << "ViewManager::viewZoomLevelChanged: WARNING: sender is not a view" << endl;
Chris@222:         return;
Chris@222:     }
Chris@222: 
Chris@222: //!!!    emit zoomLevelChanged();
Chris@133:     
Chris@127:     if (locked) {
Chris@127: 	m_globalZoom = z;
Chris@127:     }
Chris@127: 
Chris@127: #ifdef DEBUG_VIEW_MANAGER 
Chris@682:     cerr << "ViewManager::viewZoomLevelChanged(" << v << ", " << z << ", " << locked << ")" << endl;
Chris@127: #endif
Chris@222: 
Chris@222:     emit viewZoomLevelChanged(v, z, locked);
Chris@503: 
Chris@503:     if (!dynamic_cast<Overview *>(v)) {
Chris@503:         emit activity(tr("Zoom to %n sample(s) per pixel", "", z));
Chris@503:     }
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@502:         emit activity(tr("Change overlay level"));
Chris@127:     }
Chris@133: 
Chris@133:     QSettings settings;
Chris@133:     settings.beginGroup("MainWindow");
Chris@133:     settings.setValue("overlay-mode", int(m_overlayMode));
Chris@133:     settings.endGroup();
Chris@127: }
Chris@127: 
Chris@133: void
Chris@133: ViewManager::setZoomWheelsEnabled(bool enabled)
Chris@133: {
Chris@133:     if (m_zoomWheelsEnabled != enabled) {
Chris@133:         m_zoomWheelsEnabled = enabled;
Chris@133:         emit zoomWheelsEnabledChanged();
Chris@502:         if (enabled) emit activity("Show zoom wheels");
Chris@502:         else emit activity("Hide zoom wheels");
Chris@133:     }
Chris@127: 
Chris@133:     QSettings settings;
Chris@133:     settings.beginGroup("MainWindow");
Chris@133:     settings.setValue("zoom-wheels-enabled", m_zoomWheelsEnabled);
Chris@133:     settings.endGroup();
Chris@133: }
Chris@133: 
Chris@292: void
Chris@607: ViewManager::setShowCentreLine(bool show)
Chris@607: {
Chris@607:     if (m_showCentreLine != show) {
Chris@607:         m_showCentreLine = show;
Chris@607:         emit showCentreLineChanged();
Chris@607:         if (show) emit activity("Show centre line");
Chris@607:         else emit activity("Hide centre line");
Chris@607:     }
Chris@607: 
Chris@607:     QSettings settings;
Chris@607:     settings.beginGroup("MainWindow");
Chris@607:     settings.setValue("show-centre-line", int(m_showCentreLine));
Chris@607:     settings.endGroup();
Chris@607: }
Chris@607: 
Chris@607: void
Chris@292: ViewManager::setGlobalDarkBackground(bool dark)
Chris@292: {
Chris@292:     // also save the current palette, in case the user has changed it
Chris@292:     // since construction
Chris@292:     if (getGlobalDarkBackground()) {
Chris@292:         m_darkPalette = QApplication::palette();
Chris@292:     } else {
Chris@292:         m_lightPalette = QApplication::palette();
Chris@292:     }
Chris@292: 
Chris@292:     if (dark) {
Chris@292:         QApplication::setPalette(m_darkPalette);
Chris@292:     } else {
Chris@292:         QApplication::setPalette(m_lightPalette);
Chris@292:     }
Chris@292: }
Chris@292: 
Chris@292: bool
Chris@292: ViewManager::getGlobalDarkBackground() const
Chris@292: {
Chris@292:     bool dark = false;
Chris@292:     QColor windowBg = QApplication::palette().color(QPalette::Window);
Chris@292:     if (windowBg.red() + windowBg.green() + windowBg.blue() < 384) {
Chris@292:         dark = true;
Chris@292:     }
Chris@292:     return dark;
Chris@292: }
Chris@292: