Mercurial > hg > svcore
view base/View.cpp @ 51:c2913298cf94
* Make RealTimePluginInstances also provide the PluginInstance interface
author | Chris Cannam |
---|---|
date | Mon, 20 Mar 2006 13:48:58 +0000 |
parents | 39ae3dee27b9 |
children | d397ea0a79f5 |
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/* -*- c-basic-offset: 4 indent-tabs-mode: nil -*- vi:set ts=8 sts=4 sw=4: */ /* A waveform viewer and audio annotation editor. Chris Cannam, Queen Mary University of London, 2005-2006 This is experimental software. Not for distribution. */ #include "base/View.h" #include "base/Layer.h" #include "base/Model.h" #include "base/ZoomConstraint.h" #include "base/Profiler.h" #include "layer/TimeRulerLayer.h" //!!! damn, shouldn't be including that here #include "model/PowerOfSqrtTwoZoomConstraint.h" //!!! likewise #include <QPainter> #include <QPaintEvent> #include <QRect> #include <QApplication> #include <iostream> #include <cassert> #include <math.h> //#define DEBUG_VIEW_WIDGET_PAINT 1 using std::cerr; using std::endl; View::View(QWidget *w, bool showProgress) : QFrame(w), m_centreFrame(0), m_zoomLevel(1024), m_followPan(true), m_followZoom(true), m_followPlay(PlaybackScrollPage), m_lightBackground(true), m_showProgress(showProgress), m_cache(0), m_cacheCentreFrame(0), m_cacheZoomLevel(1024), m_selectionCached(false), m_deleting(false), m_haveSelectedLayer(false), m_manager(0), m_propertyContainer(new ViewPropertyContainer(this)) { // QWidget::setAttribute(Qt::WA_PaintOnScreen); } View::~View() { std::cerr << "View::~View(" << this << ")" << std::endl; m_deleting = true; delete m_propertyContainer; } PropertyContainer::PropertyList View::getProperties() const { PropertyContainer::PropertyList list; list.push_back(tr("Global Scroll")); list.push_back(tr("Global Zoom")); list.push_back(tr("Follow Playback")); return list; } PropertyContainer::PropertyType View::getPropertyType(const PropertyContainer::PropertyName &name) const { if (name == tr("Global Scroll")) return PropertyContainer::ToggleProperty; if (name == tr("Global Zoom")) return PropertyContainer::ToggleProperty; if (name == tr("Follow Playback")) return PropertyContainer::ValueProperty; return PropertyContainer::InvalidProperty; } int View::getPropertyRangeAndValue(const PropertyContainer::PropertyName &name, int *min, int *max) const { if (name == tr("Global Scroll")) return m_followPan; if (name == tr("Global Zoom")) return m_followZoom; if (name == tr("Follow Playback")) { if (min) *min = 0; if (max) *max = 2; return int(m_followPlay); } if (min) *min = 0; if (max) *max = 0; return 0; } QString View::getPropertyValueLabel(const PropertyContainer::PropertyName &name, int value) const { if (name == tr("Follow Playback")) { switch (value) { default: case 0: return tr("Scroll"); case 1: return tr("Page"); case 2: return tr("Off"); } } return tr("<unknown>"); } void View::setProperty(const PropertyContainer::PropertyName &name, int value) { if (name == tr("Global Scroll")) { setFollowGlobalPan(value != 0); } else if (name == tr("Global Zoom")) { setFollowGlobalZoom(value != 0); } else if (name == tr("Follow Playback")) { switch (value) { default: case 0: setPlaybackFollow(PlaybackScrollContinuous); break; case 1: setPlaybackFollow(PlaybackScrollPage); break; case 2: setPlaybackFollow(PlaybackIgnore); break; } } } size_t View::getPropertyContainerCount() const { return m_layers.size() + 1; // the 1 is for me } const PropertyContainer * View::getPropertyContainer(size_t i) const { return (const PropertyContainer *)(((View *)this)-> getPropertyContainer(i)); } PropertyContainer * View::getPropertyContainer(size_t i) { if (i == 0) return m_propertyContainer; return m_layers[i-1]; } void View::propertyContainerSelected(View *client, PropertyContainer *pc) { if (client != this) return; if (pc == m_propertyContainer) { if (m_haveSelectedLayer) { m_haveSelectedLayer = false; update(); } return; } delete m_cache; m_cache = 0; Layer *selectedLayer = 0; for (LayerList::iterator i = m_layers.begin(); i != m_layers.end(); ++i) { if (*i == pc) { selectedLayer = *i; m_layers.erase(i); break; } } if (selectedLayer) { m_haveSelectedLayer = true; m_layers.push_back(selectedLayer); update(); } else { m_haveSelectedLayer = false; } } void View::toolModeChanged() { std::cerr << "View::toolModeChanged(" << m_manager->getToolMode() << ")" << std::endl; } long View::getStartFrame() const { size_t w2 = (width() / 2) * m_zoomLevel; size_t frame = m_centreFrame; if (frame >= w2) { frame -= w2; return (frame / m_zoomLevel * m_zoomLevel); } else { frame = w2 - frame; frame = frame / m_zoomLevel * m_zoomLevel; return -(long)frame - m_zoomLevel; } } size_t View::getEndFrame() const { return getFrameForX(width()) - 1; } void View::setStartFrame(long f) { setCentreFrame(f + m_zoomLevel * (width() / 2)); } bool View::setCentreFrame(size_t f, bool e) { bool changeVisible = false; if (m_centreFrame != f) { int formerPixel = m_centreFrame / m_zoomLevel; m_centreFrame = f; int newPixel = m_centreFrame / m_zoomLevel; if (newPixel != formerPixel) { #ifdef DEBUG_VIEW_WIDGET_PAINT std::cout << "View(" << this << ")::setCentreFrame: newPixel " << newPixel << ", formerPixel " << formerPixel << std::endl; #endif update(); changeVisible = true; } if (e) emit centreFrameChanged(this, f, m_followPan); } return changeVisible; } int View::getXForFrame(long frame) const { return (frame - getStartFrame()) / m_zoomLevel; } long View::getFrameForX(int x) const { return (long(x) * long(m_zoomLevel)) + getStartFrame(); } float View::getYForFrequency(float frequency, float minf, float maxf, bool logarithmic) const { int h = height(); if (logarithmic) { static float lastminf = 0.0, lastmaxf = 0.0; static float logminf = 0.0, logmaxf = 0.0; if (lastminf != minf) { lastminf = (minf == 0.0 ? 1.0 : minf); logminf = log10f(minf); } if (lastmaxf != maxf) { lastmaxf = (maxf < lastminf ? lastminf : maxf); logmaxf = log10f(maxf); } if (logminf == logmaxf) return 0; return h - (h * (log10f(frequency) - logminf)) / (logmaxf - logminf); } else { if (minf == maxf) return 0; return h - (h * (frequency - minf)) / (maxf - minf); } } float View::getFrequencyForY(int y, float minf, float maxf, bool logarithmic) const { int h = height(); if (logarithmic) { static float lastminf = 0.0, lastmaxf = 0.0; static float logminf = 0.0, logmaxf = 0.0; if (lastminf != minf) { lastminf = (minf == 0.0 ? 1.0 : minf); logminf = log10f(minf); } if (lastmaxf != maxf) { lastmaxf = (maxf < lastminf ? lastminf : maxf); logmaxf = log10f(maxf); } if (logminf == logmaxf) return 0; return pow(10.f, logminf + ((logmaxf - logminf) * (h - y)) / h); } else { if (minf == maxf) return 0; return minf + ((h - y) * (maxf - minf)) / h; } } int View::getZoomLevel() const { return m_zoomLevel; } void View::setZoomLevel(size_t z) { if (m_zoomLevel != int(z)) { m_zoomLevel = z; emit zoomLevelChanged(this, z, m_followZoom); update(); } } View::LayerProgressBar::LayerProgressBar(QWidget *parent) : QProgressBar(parent) { QFont f(font()); f.setPointSize(f.pointSize() * 8 / 10); setFont(f); } void View::addLayer(Layer *layer) { delete m_cache; m_cache = 0; m_layers.push_back(layer); m_progressBars[layer] = new LayerProgressBar(this); m_progressBars[layer]->setMinimum(0); m_progressBars[layer]->setMaximum(100); m_progressBars[layer]->setMinimumWidth(80); m_progressBars[layer]->hide(); connect(layer, SIGNAL(layerParametersChanged()), this, SLOT(layerParametersChanged())); connect(layer, SIGNAL(layerNameChanged()), this, SLOT(layerNameChanged())); connect(layer, SIGNAL(modelChanged()), this, SLOT(modelChanged())); connect(layer, SIGNAL(modelCompletionChanged()), this, SLOT(modelCompletionChanged())); connect(layer, SIGNAL(modelChanged(size_t, size_t)), this, SLOT(modelChanged(size_t, size_t))); connect(layer, SIGNAL(modelReplaced()), this, SLOT(modelReplaced())); update(); emit propertyContainerAdded(layer); } void View::removeLayer(Layer *layer) { if (m_deleting) { return; } delete m_cache; m_cache = 0; for (LayerList::iterator i = m_layers.begin(); i != m_layers.end(); ++i) { if (*i == layer) { m_layers.erase(i); if (m_progressBars.find(layer) != m_progressBars.end()) { delete m_progressBars[layer]; m_progressBars.erase(layer); } break; } } update(); emit propertyContainerRemoved(layer); } Layer * View::getSelectedLayer() { if (m_haveSelectedLayer && !m_layers.empty()) { return getLayer(getLayerCount() - 1); } else { return 0; } } const Layer * View::getSelectedLayer() const { return const_cast<const Layer *>(const_cast<View *>(this)->getSelectedLayer()); } void View::setViewManager(ViewManager *manager) { if (m_manager) { m_manager->disconnect(this, SLOT(viewManagerCentreFrameChanged(void *, unsigned long, bool))); m_manager->disconnect(this, SLOT(viewManagerZoomLevelChanged(void *, unsigned long, bool))); disconnect(m_manager, SIGNAL(centreFrameChanged(void *, unsigned long, bool))); disconnect(m_manager, SIGNAL(zoomLevelChanged(void *, unsigned long, bool))); disconnect(m_manager, SIGNAL(toolModeChanged())); disconnect(m_manager, SIGNAL(selectionChanged())); disconnect(m_manager, SIGNAL(inProgressSelectionChanged())); } m_manager = manager; if (m_followPan) setCentreFrame(m_manager->getGlobalCentreFrame(), false); if (m_followZoom) setZoomLevel(m_manager->getGlobalZoom()); connect(m_manager, SIGNAL(centreFrameChanged(void *, unsigned long, bool)), this, SLOT(viewManagerCentreFrameChanged(void *, unsigned long, bool))); connect(m_manager, SIGNAL(playbackFrameChanged(unsigned long)), this, SLOT(viewManagerPlaybackFrameChanged(unsigned long))); connect(m_manager, SIGNAL(zoomLevelChanged(void *, unsigned long, bool)), this, SLOT(viewManagerZoomLevelChanged(void *, unsigned long, bool))); connect(m_manager, SIGNAL(toolModeChanged()), this, SLOT(toolModeChanged())); connect(m_manager, SIGNAL(selectionChanged()), this, SLOT(selectionChanged())); connect(m_manager, SIGNAL(inProgressSelectionChanged()), this, SLOT(selectionChanged())); connect(this, SIGNAL(centreFrameChanged(void *, unsigned long, bool)), m_manager, SIGNAL(centreFrameChanged(void *, unsigned long, bool))); connect(this, SIGNAL(zoomLevelChanged(void *, unsigned long, bool)), m_manager, SIGNAL(zoomLevelChanged(void *, unsigned long, bool))); toolModeChanged(); } void View::setFollowGlobalPan(bool f) { m_followPan = f; emit propertyContainerPropertyChanged(m_propertyContainer); } void View::setFollowGlobalZoom(bool f) { m_followZoom = f; emit propertyContainerPropertyChanged(m_propertyContainer); } void View::drawVisibleText(QPainter &paint, int x, int y, QString text, TextStyle style) { if (style == OutlinedText) { QColor origPenColour = paint.pen().color(); QColor penColour = origPenColour; QColor surroundColour = Qt::white; //palette().background().color(); if (!hasLightBackground()) { int h, s, v; penColour.getHsv(&h, &s, &v); penColour = QColor::fromHsv(h, s, 255 - v); surroundColour = Qt::black; } paint.setPen(surroundColour); for (int dx = -1; dx <= 1; ++dx) { for (int dy = -1; dy <= 1; ++dy) { if (!(dx || dy)) continue; paint.drawText(x + dx, y + dy, text); } } paint.setPen(penColour); paint.drawText(x, y, text); paint.setPen(origPenColour); } else { std::cerr << "ERROR: View::drawVisibleText: Boxed style not yet implemented!" << std::endl; } } void View::setPlaybackFollow(PlaybackFollowMode m) { m_followPlay = m; emit propertyContainerPropertyChanged(m_propertyContainer); } void View::modelChanged() { QObject *obj = sender(); #ifdef DEBUG_VIEW_WIDGET_PAINT std::cerr << "View(" << this << ")::modelChanged()" << std::endl; #endif // If the model that has changed is not used by any of the cached // layers, we won't need to recreate the cache bool recreate = false; bool discard; LayerList scrollables = getScrollableBackLayers(false, discard); for (LayerList::const_iterator i = scrollables.begin(); i != scrollables.end(); ++i) { if (*i == obj || (*i)->getModel() == obj) { recreate = true; break; } } if (recreate) { delete m_cache; m_cache = 0; } checkProgress(obj); update(); } void View::modelChanged(size_t startFrame, size_t endFrame) { QObject *obj = sender(); long myStartFrame = getStartFrame(); size_t myEndFrame = getEndFrame(); #ifdef DEBUG_VIEW_WIDGET_PAINT std::cerr << "View(" << this << ")::modelChanged(" << startFrame << "," << endFrame << ") [me " << myStartFrame << "," << myEndFrame << "]" << std::endl; #endif if (myStartFrame > 0 && endFrame < size_t(myStartFrame)) { checkProgress(obj); return; } if (startFrame > myEndFrame) { checkProgress(obj); return; } // If the model that has changed is not used by any of the cached // layers, we won't need to recreate the cache bool recreate = false; bool discard; LayerList scrollables = getScrollableBackLayers(false, discard); for (LayerList::const_iterator i = scrollables.begin(); i != scrollables.end(); ++i) { if (*i == obj || (*i)->getModel() == obj) { recreate = true; break; } } if (recreate) { delete m_cache; m_cache = 0; } if (long(startFrame) < myStartFrame) startFrame = myStartFrame; if (endFrame > myEndFrame) endFrame = myEndFrame; int x0 = getXForFrame(startFrame); int x1 = getXForFrame(endFrame + 1); if (x1 < x0) x1 = x0; checkProgress(obj); update(); //!! update(x0, 0, x1 - x0 + 1, height()); } void View::modelCompletionChanged() { QObject *obj = sender(); checkProgress(obj); } void View::modelReplaced() { #ifdef DEBUG_VIEW_WIDGET_PAINT std::cerr << "View(" << this << ")::modelReplaced()" << std::endl; #endif delete m_cache; m_cache = 0; update(); } void View::layerParametersChanged() { Layer *layer = dynamic_cast<Layer *>(sender()); #ifdef DEBUG_VIEW_WIDGET_PAINT std::cerr << "View::layerParametersChanged()" << std::endl; #endif delete m_cache; m_cache = 0; update(); if (layer) { emit propertyContainerPropertyChanged(layer); } } void View::layerNameChanged() { Layer *layer = dynamic_cast<Layer *>(sender()); if (layer) emit propertyContainerNameChanged(layer); } void View::viewManagerCentreFrameChanged(void *p, unsigned long f, bool locked) { if (m_followPan && p != this && locked) { if (m_manager && (sender() == m_manager)) { #ifdef DEBUG_VIEW_WIDGET_PAINT std::cerr << this << ": manager frame changed " << f << " from " << p << std::endl; #endif setCentreFrame(f); if (p == this) repaint(); } } } void View::viewManagerPlaybackFrameChanged(unsigned long f) { if (m_manager) { if (sender() != m_manager) return; } if (m_playPointerFrame == f) return; bool visible = (getXForFrame(m_playPointerFrame) != getXForFrame(f)); size_t oldPlayPointerFrame = m_playPointerFrame; m_playPointerFrame = f; if (!visible) return; bool modifierPressed = // we only care about these ones ((QApplication::keyboardModifiers() & Qt::ShiftModifier) || (QApplication::keyboardModifiers() & Qt::ControlModifier)); switch (m_followPlay) { case PlaybackScrollContinuous: if (QApplication::mouseButtons() == Qt::NoButton && !modifierPressed) { setCentreFrame(f, false); } break; case PlaybackScrollPage: { int xold = getXForFrame(oldPlayPointerFrame); repaint(xold - 1, 0, 3, height()); long w = getEndFrame() - getStartFrame(); w -= w/5; long sf = (f / w) * w - w/8; if (m_manager && m_manager->isPlaying() && m_manager->getPlaySelectionMode()) { MultiSelection::SelectionList selections = m_manager->getSelections(); if (!selections.empty()) { size_t selectionStart = selections.begin()->getStartFrame(); if (sf < long(selectionStart) - w / 10) { sf = long(selectionStart) - w / 10; } } } #ifdef DEBUG_VIEW_WIDGET_PAINT std::cerr << "PlaybackScrollPage: f = " << f << ", sf = " << sf << ", start frame " << getStartFrame() << std::endl; #endif // We don't consider scrolling unless the pointer is outside // the clearly visible range already int xnew = getXForFrame(m_playPointerFrame); #ifdef DEBUG_VIEW_WIDGET_PAINT std::cerr << "xnew = " << xnew << ", width = " << width() << std::endl; #endif if (xnew < width()/8 || xnew > (width()*7)/8) { if (QApplication::mouseButtons() == Qt::NoButton && !modifierPressed) { long offset = getFrameForX(width()/2) - getStartFrame(); long newCentre = sf + offset; bool changed = setCentreFrame(newCentre, false); if (changed) { xold = getXForFrame(oldPlayPointerFrame); update(xold - 1, 0, 3, height()); } } } update(xnew - 1, 0, 3, height()); break; } case PlaybackIgnore: if (long(f) >= getStartFrame() && f < getEndFrame()) { update(); } break; } } void View::viewManagerZoomLevelChanged(void *p, unsigned long z, bool locked) { if (m_followZoom && p != this && locked) { if (m_manager && (sender() == m_manager)) { setZoomLevel(z); if (p == this) repaint(); } } } void View::selectionChanged() { if (m_selectionCached) { delete m_cache; m_cache = 0; m_selectionCached = false; } update(); } size_t View::getModelsStartFrame() const { bool first = true; size_t startFrame = 0; for (LayerList::const_iterator i = m_layers.begin(); i != m_layers.end(); ++i) { if ((*i)->getModel() && (*i)->getModel()->isOK()) { size_t thisStartFrame = (*i)->getModel()->getStartFrame(); if (first || thisStartFrame < startFrame) { startFrame = thisStartFrame; } first = false; } } return startFrame; } size_t View::getModelsEndFrame() const { bool first = true; size_t endFrame = 0; for (LayerList::const_iterator i = m_layers.begin(); i != m_layers.end(); ++i) { if ((*i)->getModel() && (*i)->getModel()->isOK()) { size_t thisEndFrame = (*i)->getModel()->getEndFrame(); if (first || thisEndFrame > endFrame) { endFrame = thisEndFrame; } first = false; } } if (first) return getModelsStartFrame(); return endFrame; } int View::getModelsSampleRate() const { //!!! Just go for the first, for now. If we were supporting // multiple samplerates, we'd probably want to do frame/time // conversion in the model for (LayerList::const_iterator i = m_layers.begin(); i != m_layers.end(); ++i) { if ((*i)->getModel() && (*i)->getModel()->isOK()) { return (*i)->getModel()->getSampleRate(); } } return 0; } bool View::areLayersScrollable() const { // True iff all views are scrollable for (LayerList::const_iterator i = m_layers.begin(); i != m_layers.end(); ++i) { if (!(*i)->isLayerScrollable(this)) return false; } return true; } View::LayerList View::getScrollableBackLayers(bool testChanged, bool &changed) const { changed = false; // We want a list of all the scrollable layers that are behind the // backmost non-scrollable layer. LayerList scrollables; for (LayerList::const_iterator i = m_layers.begin(); i != m_layers.end(); ++i) { if ((*i)->isLayerDormant(this)) continue; if ((*i)->isLayerOpaque()) { // You can't see anything behind an opaque layer! scrollables.clear(); } if ((*i)->isLayerScrollable(this)) scrollables.push_back(*i); else break; } if (testChanged && scrollables != m_lastScrollableBackLayers) { m_lastScrollableBackLayers = scrollables; changed = true; } return scrollables; } View::LayerList View::getNonScrollableFrontLayers(bool testChanged, bool &changed) const { changed = false; LayerList scrollables = getScrollableBackLayers(testChanged, changed); LayerList nonScrollables; // Everything in front of the first non-scrollable from the back // should also be considered non-scrollable bool started = false; for (LayerList::const_iterator i = m_layers.begin(); i != m_layers.end(); ++i) { if ((*i)->isLayerDormant(this)) continue; if (!started && (*i)->isLayerScrollable(this)) { continue; } started = true; if ((*i)->isLayerOpaque()) { // You can't see anything behind an opaque layer! nonScrollables.clear(); } nonScrollables.push_back(*i); } if (testChanged && nonScrollables != m_lastNonScrollableBackLayers) { m_lastNonScrollableBackLayers = nonScrollables; changed = true; } return nonScrollables; } size_t View::getZoomConstraintBlockSize(size_t blockSize, ZoomConstraint::RoundingDirection dir) const { size_t candidate = blockSize; bool haveCandidate = false; PowerOfSqrtTwoZoomConstraint defaultZoomConstraint; for (LayerList::const_iterator i = m_layers.begin(); i != m_layers.end(); ++i) { const ZoomConstraint *zoomConstraint = (*i)->getZoomConstraint(); if (!zoomConstraint) zoomConstraint = &defaultZoomConstraint; size_t thisBlockSize = zoomConstraint->getNearestBlockSize(blockSize, dir); // Go for the block size that's furthest from the one // passed in. Most of the time, that's what we want. if (!haveCandidate || (thisBlockSize > blockSize && thisBlockSize > candidate) || (thisBlockSize < blockSize && thisBlockSize < candidate)) { candidate = thisBlockSize; haveCandidate = true; } } return candidate; } void View::zoom(bool in) { int newZoomLevel = m_zoomLevel; if (in) { newZoomLevel = getZoomConstraintBlockSize(newZoomLevel - 1, ZoomConstraint::RoundDown); } else { newZoomLevel = getZoomConstraintBlockSize(newZoomLevel + 1, ZoomConstraint::RoundUp); } if (newZoomLevel != m_zoomLevel) { setZoomLevel(newZoomLevel); } } void View::scroll(bool right, bool lots) { long delta; if (lots) { delta = (getEndFrame() - getStartFrame()) / 2; } else { delta = (getEndFrame() - getStartFrame()) / 20; } if (right) delta = -delta; if (int(m_centreFrame) < delta) { setCentreFrame(0); } else if (int(m_centreFrame) - delta >= int(getModelsEndFrame())) { setCentreFrame(getModelsEndFrame()); } else { setCentreFrame(m_centreFrame - delta); } } void View::checkProgress(void *object) { if (!m_showProgress) return; int ph = height(); for (ProgressMap::const_iterator i = m_progressBars.begin(); i != m_progressBars.end(); ++i) { if (i->first == object) { int completion = i->first->getCompletion(); if (completion >= 100) { i->second->hide(); } else { i->second->setText(i->first->getPropertyContainerName()); i->second->setValue(completion); i->second->move(0, ph - i->second->height()); i->second->show(); i->second->update(); ph -= i->second->height(); } } else { if (i->second->isVisible()) { ph -= i->second->height(); } } } } void View::paintEvent(QPaintEvent *e) { // Profiler prof("View::paintEvent", true); // std::cerr << "View::paintEvent" << std::endl; if (m_layers.empty()) { QFrame::paintEvent(e); return; } // ensure our constraints are met m_zoomLevel = getZoomConstraintBlockSize(m_zoomLevel, ZoomConstraint::RoundUp); QPainter paint; bool repaintCache = false; bool paintedCacheRect = false; QRect cacheRect(rect()); if (e) { cacheRect &= e->rect(); #ifdef DEBUG_VIEW_WIDGET_PAINT std::cerr << "paint rect " << cacheRect.width() << "x" << cacheRect.height() << ", my rect " << width() << "x" << height() << std::endl; #endif } QRect nonCacheRect(cacheRect); // If not all layers are scrollable, but some of the back layers // are, we should store only those in the cache. bool layersChanged = false; LayerList scrollables = getScrollableBackLayers(true, layersChanged); LayerList nonScrollables = getNonScrollableFrontLayers(true, layersChanged); bool selectionCacheable = nonScrollables.empty(); bool haveSelections = m_manager && !m_manager->getSelections().empty(); bool selectionDrawn = false; // If all the non-scrollable layers are non-opaque, then we draw // the selection rectangle behind them and cache it. If any are // opaque, however, we can't cache. // if (!selectionCacheable) { selectionCacheable = true; for (LayerList::const_iterator i = nonScrollables.begin(); i != nonScrollables.end(); ++i) { if ((*i)->isLayerOpaque()) { selectionCacheable = false; break; } } } if (selectionCacheable) { QPoint localPos; bool closeToLeft, closeToRight; if (shouldIlluminateLocalSelection(localPos, closeToLeft, closeToRight)) { selectionCacheable = false; } } #ifdef DEBUG_VIEW_WIDGET_PAINT std::cerr << "View(" << this << ")::paintEvent: have " << scrollables.size() << " scrollable back layers and " << nonScrollables.size() << " non-scrollable front layers" << std::endl; std::cerr << "haveSelections " << haveSelections << ", selectionCacheable " << selectionCacheable << ", m_selectionCached " << m_selectionCached << std::endl; #endif if (layersChanged || scrollables.empty() || (haveSelections && (selectionCacheable != m_selectionCached))) { delete m_cache; m_cache = 0; m_selectionCached = false; } if (!scrollables.empty()) { if (!m_cache || m_cacheZoomLevel != m_zoomLevel || width() != m_cache->width() || height() != m_cache->height()) { // cache is not valid if (cacheRect.width() < width()/10) { #ifdef DEBUG_VIEW_WIDGET_PAINT std::cerr << "View(" << this << ")::paintEvent: small repaint, not bothering to recreate cache" << std::endl; #endif } else { delete m_cache; m_cache = new QPixmap(width(), height()); #ifdef DEBUG_VIEW_WIDGET_PAINT std::cerr << "View(" << this << ")::paintEvent: recreated cache" << std::endl; #endif cacheRect = rect(); repaintCache = true; } } else if (m_cacheCentreFrame != m_centreFrame) { long dx = getXForFrame(m_cacheCentreFrame) - getXForFrame(m_centreFrame); if (dx > -width() && dx < width()) { #if defined(Q_WS_WIN32) || defined(Q_WS_MAC) // Copying a pixmap to itself doesn't work properly on Windows // or Mac (it only works when moving in one direction) static QPixmap *tmpPixmap = 0; if (!tmpPixmap || tmpPixmap->width() != width() || tmpPixmap->height() != height()) { delete tmpPixmap; tmpPixmap = new QPixmap(width(), height()); } paint.begin(tmpPixmap); paint.drawPixmap(0, 0, *m_cache); paint.end(); paint.begin(m_cache); paint.drawPixmap(dx, 0, *tmpPixmap); paint.end(); #else // But it seems to be fine on X11 paint.begin(m_cache); paint.drawPixmap(dx, 0, *m_cache); paint.end(); #endif if (dx < 0) { cacheRect = QRect(width() + dx, 0, -dx, height()); } else { cacheRect = QRect(0, 0, dx, height()); } #ifdef DEBUG_VIEW_WIDGET_PAINT std::cerr << "View(" << this << ")::paintEvent: scrolled cache by " << dx << std::endl; #endif } else { cacheRect = rect(); #ifdef DEBUG_VIEW_WIDGET_PAINT std::cerr << "View(" << this << ")::paintEvent: scrolling too far" << std::endl; #endif } repaintCache = true; } else { #ifdef DEBUG_VIEW_WIDGET_PAINT std::cerr << "View(" << this << ")::paintEvent: cache is good" << std::endl; #endif paint.begin(this); paint.drawPixmap(cacheRect, *m_cache, cacheRect); paint.end(); QFrame::paintEvent(e); paintedCacheRect = true; } m_cacheCentreFrame = m_centreFrame; m_cacheZoomLevel = m_zoomLevel; } #ifdef DEBUG_VIEW_WIDGET_PAINT // std::cerr << "View(" << this << ")::paintEvent: cacheRect " << cacheRect << ", nonCacheRect " << (nonCacheRect | cacheRect) << ", repaintCache " << repaintCache << ", paintedCacheRect " << paintedCacheRect << std::endl; #endif // Scrollable (cacheable) items first if (!paintedCacheRect) { if (repaintCache) paint.begin(m_cache); else paint.begin(this); paint.setClipRect(cacheRect); if (hasLightBackground()) { paint.setPen(Qt::white); paint.setBrush(Qt::white); } else { paint.setPen(Qt::black); paint.setBrush(Qt::black); } paint.drawRect(cacheRect); paint.setPen(Qt::black); paint.setBrush(Qt::NoBrush); for (LayerList::iterator i = scrollables.begin(); i != scrollables.end(); ++i) { paint.setRenderHint(QPainter::Antialiasing, false); paint.save(); (*i)->paint(this, paint, cacheRect); paint.restore(); } if (haveSelections && selectionCacheable) { drawSelections(paint); m_selectionCached = repaintCache; selectionDrawn = true; } paint.end(); if (repaintCache) { cacheRect |= (e ? e->rect() : rect()); paint.begin(this); paint.drawPixmap(cacheRect, *m_cache, cacheRect); paint.end(); } } // Now non-cacheable items. We always need to redraw the // non-cacheable items across at least the area we drew of the // cacheable items. nonCacheRect |= cacheRect; paint.begin(this); paint.setClipRect(nonCacheRect); if (scrollables.empty()) { if (hasLightBackground()) { paint.setPen(Qt::white); paint.setBrush(Qt::white); } else { paint.setPen(Qt::black); paint.setBrush(Qt::black); } paint.drawRect(nonCacheRect); } paint.setPen(Qt::black); paint.setBrush(Qt::NoBrush); for (LayerList::iterator i = nonScrollables.begin(); i != nonScrollables.end(); ++i) { (*i)->paint(this, paint, nonCacheRect); } paint.end(); paint.begin(this); if (e) paint.setClipRect(e->rect()); if (!m_selectionCached) { drawSelections(paint); } paint.end(); if (m_followPlay != PlaybackScrollContinuous) { paint.begin(this); if (long(m_playPointerFrame) > getStartFrame() && m_playPointerFrame < getEndFrame()) { int playx = getXForFrame(m_playPointerFrame); paint.setPen(Qt::black); paint.drawLine(playx - 1, 0, playx - 1, height() - 1); paint.drawLine(playx + 1, 0, playx + 1, height() - 1); paint.drawPoint(playx, 0); paint.drawPoint(playx, height() - 1); paint.setPen(Qt::white); paint.drawLine(playx, 1, playx, height() - 2); } paint.end(); } QFrame::paintEvent(e); } void View::drawSelections(QPainter &paint) { MultiSelection::SelectionList selections; if (m_manager) { selections = m_manager->getSelections(); if (m_manager->haveInProgressSelection()) { bool exclusive; Selection inProgressSelection = m_manager->getInProgressSelection(exclusive); if (exclusive) selections.clear(); selections.insert(inProgressSelection); } } paint.save(); paint.setBrush(QColor(150, 150, 255, 80)); int sampleRate = getModelsSampleRate(); QPoint localPos; long illuminateFrame = -1; bool closeToLeft, closeToRight; if (shouldIlluminateLocalSelection(localPos, closeToLeft, closeToRight)) { illuminateFrame = getFrameForX(localPos.x()); } const QFontMetrics &metrics = paint.fontMetrics(); for (MultiSelection::SelectionList::iterator i = selections.begin(); i != selections.end(); ++i) { int p0 = getXForFrame(i->getStartFrame()); int p1 = getXForFrame(i->getEndFrame()); if (p1 < 0 || p0 > width()) continue; #ifdef DEBUG_VIEW_WIDGET_PAINT std::cerr << "View::drawSelections: " << p0 << ",-1 [" << (p1-p0) << "x" << (height()+1) << "]" << std::endl; #endif bool illuminateThis = (illuminateFrame >= 0 && i->contains(illuminateFrame)); paint.setPen(QColor(150, 150, 255)); paint.drawRect(p0, -1, p1 - p0, height() + 1); if (illuminateThis) { paint.save(); if (hasLightBackground()) { paint.setPen(QPen(Qt::black, 2)); } else { paint.setPen(QPen(Qt::white, 2)); } if (closeToLeft) { paint.drawLine(p0, 1, p1, 1); paint.drawLine(p0, 0, p0, height()); paint.drawLine(p0, height() - 1, p1, height() - 1); } else if (closeToRight) { paint.drawLine(p0, 1, p1, 1); paint.drawLine(p1, 0, p1, height()); paint.drawLine(p0, height() - 1, p1, height() - 1); } else { paint.setBrush(Qt::NoBrush); paint.drawRect(p0, 1, p1 - p0, height() - 2); } paint.restore(); } if (sampleRate && shouldLabelSelections()) { QString startText = QString("%1 / %2") .arg(QString::fromStdString (RealTime::frame2RealTime (i->getStartFrame(), sampleRate).toText(true))) .arg(i->getStartFrame()); QString endText = QString(" %1 / %2") .arg(QString::fromStdString (RealTime::frame2RealTime (i->getEndFrame(), sampleRate).toText(true))) .arg(i->getEndFrame()); QString durationText = QString("(%1 / %2) ") .arg(QString::fromStdString (RealTime::frame2RealTime (i->getEndFrame() - i->getStartFrame(), sampleRate) .toText(true))) .arg(i->getEndFrame() - i->getStartFrame()); int sw = metrics.width(startText), ew = metrics.width(endText), dw = metrics.width(durationText); int sy = metrics.ascent() + metrics.height() + 4; int ey = sy; int dy = sy + metrics.height(); int sx = p0 + 2; int ex = sx; int dx = sx; if (sw + ew > (p1 - p0)) { ey += metrics.height(); dy += metrics.height(); } if (ew < (p1 - p0)) { ex = p1 - 2 - ew; } if (dw < (p1 - p0)) { dx = p1 - 2 - dw; } paint.drawText(sx, sy, startText); paint.drawText(ex, ey, endText); paint.drawText(dx, dy, durationText); } } paint.restore(); } QString View::toXmlString(QString indent, QString extraAttributes) const { QString s; s += indent; s += QString("<view " "centre=\"%1\" " "zoom=\"%2\" " "followPan=\"%3\" " "followZoom=\"%4\" " "tracking=\"%5\" " "light=\"%6\" %7>\n") .arg(m_centreFrame) .arg(m_zoomLevel) .arg(m_followPan) .arg(m_followZoom) .arg(m_followPlay == PlaybackScrollContinuous ? "scroll" : m_followPlay == PlaybackScrollPage ? "page" : "ignore") .arg(m_lightBackground) .arg(extraAttributes); for (size_t i = 0; i < m_layers.size(); ++i) { s += m_layers[i]->toXmlString(indent + " "); } s += indent + "</view>\n"; return s; } ViewPropertyContainer::ViewPropertyContainer(View *v) : m_v(v) { connect(m_v, SIGNAL(propertyChanged(PropertyName)), this, SIGNAL(propertyChanged(PropertyName))); } #ifdef INCLUDE_MOCFILES #include "View.moc.cpp" #endif