Chris@0: 
Chris@0: /* -*- c-basic-offset: 4 -*-  vi:set ts=8 sts=4 sw=4: */
Chris@0: 
Chris@0: /*
Chris@0:     A waveform viewer and audio annotation editor.
Chris@0:     Chris Cannam, Queen Mary University of London, 2005
Chris@0:     
Chris@0:     This is experimental software.  Not for distribution.
Chris@0: */
Chris@0: 
Chris@0: #include "PaneStack.h"
Chris@0: 
Chris@0: #include "widgets/Pane.h"
Chris@0: #include "widgets/PropertyStack.h"
Chris@0: #include "base/Layer.h"
Chris@0: #include "base/ViewManager.h"
Chris@0: 
Chris@0: #include <QApplication>
Chris@0: #include <QHBoxLayout>
Chris@0: #include <QPainter>
Chris@0: #include <QPalette>
Chris@0: #include <QLabel>
Chris@0: 
Chris@0: #include <iostream>
Chris@0: 
Chris@0: PaneStack::PaneStack(QWidget *parent, ViewManager *viewManager) :
Chris@0:     QSplitter(parent),
Chris@0:     m_currentPane(0),
Chris@0:     m_viewManager(viewManager)
Chris@0: {
Chris@0:     setOrientation(Qt::Vertical);
Chris@0:     setOpaqueResize(false);
Chris@0: }
Chris@0: 
Chris@0: Pane *
Chris@0: PaneStack::addPane(bool suppressPropertyBox)
Chris@0: {
Chris@0:     QFrame *frame = new QFrame;
Chris@0:     QHBoxLayout *layout = new QHBoxLayout;
Chris@0:     layout->setMargin(0);
Chris@0:     layout->setSpacing(2);
Chris@0: 
Chris@0:     QLabel *currentIndicator = new QLabel(frame);
Chris@0:     currentIndicator->setFixedWidth(QPainter(this).fontMetrics().width("x"));
Chris@0:     layout->addWidget(currentIndicator);
Chris@0:     layout->setStretchFactor(currentIndicator, 1);
Chris@0:     currentIndicator->setScaledContents(true);
Chris@0:     m_currentIndicators.push_back(currentIndicator);
Chris@0: 
Chris@0:     Pane *pane = new Pane(frame);
Chris@0:     pane->setViewManager(m_viewManager);
Chris@0:     layout->addWidget(pane);
Chris@0:     layout->setStretchFactor(pane, 10);
Chris@0:     m_panes.push_back(pane);
Chris@0: 
Chris@0:     QWidget *properties = 0;
Chris@0:     if (suppressPropertyBox) {
Chris@0: 	properties = new QFrame();
Chris@0:     } else {
Chris@0: 	properties = new PropertyStack(frame, pane);
Chris@0: 	connect(properties, SIGNAL(propertyContainerSelected(PropertyContainer *)),
Chris@0: 		this, SLOT(propertyContainerSelected(PropertyContainer *)));
Chris@0:     }
Chris@0:     layout->addWidget(properties);
Chris@0:     layout->setStretchFactor(properties, 1);
Chris@0:     m_propertyStacks.push_back(properties);
Chris@0: 
Chris@0:     frame->setLayout(layout);
Chris@0:     addWidget(frame);
Chris@0: 
Chris@0:     connect(pane, SIGNAL(propertyContainerAdded(PropertyContainer *)),
Chris@0: 	    this, SLOT(propertyContainerAdded(PropertyContainer *)));
Chris@0:     connect(pane, SIGNAL(propertyContainerRemoved(PropertyContainer *)),
Chris@0: 	    this, SLOT(propertyContainerRemoved(PropertyContainer *)));
Chris@0:     connect(pane, SIGNAL(paneInteractedWith()),
Chris@0: 	    this, SLOT(paneInteractedWith()));
Chris@0: 
Chris@0:     if (!m_currentPane) {
Chris@0: 	setCurrentPane(pane);
Chris@0:     }
Chris@0: 
Chris@0:     return pane;
Chris@0: }
Chris@0: 
Chris@0: Pane *
Chris@0: PaneStack::getPane(int n)
Chris@0: {
Chris@0:     return m_panes[n];
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: PaneStack::deletePane(Pane *pane)
Chris@0: {
Chris@0:     int n = 0;
Chris@0:     std::vector<Pane *>::iterator i = m_panes.begin();
Chris@0:     std::vector<QWidget *>::iterator j = m_propertyStacks.begin();
Chris@0:     std::vector<QLabel *>::iterator k = m_currentIndicators.begin();
Chris@0: 
Chris@0:     while (i != m_panes.end()) {
Chris@0: 	if (*i == pane) break;
Chris@0: 	++i;
Chris@0: 	++j;
Chris@0: 	++k;
Chris@0: 	++n;
Chris@0:     }
Chris@0:     if (n >= int(m_panes.size())) return;
Chris@0: 
Chris@0:     m_panes.erase(i);
Chris@0:     m_propertyStacks.erase(j);
Chris@0:     m_currentIndicators.erase(k);
Chris@0:     delete widget(n);
Chris@0: 
Chris@0:     if (m_currentPane == pane) {
Chris@0: 	if (m_panes.size() > 0) {
Chris@0: 	    setCurrentPane(m_panes[0]);
Chris@0: 	} else {
Chris@0: 	    setCurrentPane(0);
Chris@0: 	}
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: int
Chris@0: PaneStack::getPaneCount() const
Chris@0: {
Chris@0:     return m_panes.size();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: PaneStack::setCurrentPane(Pane *pane) // may be null
Chris@0: {
Chris@0:     if (m_currentPane == pane) return;
Chris@0:     
Chris@0:     std::vector<Pane *>::iterator i = m_panes.begin();
Chris@0:     std::vector<QLabel *>::iterator k = m_currentIndicators.begin();
Chris@0: 
Chris@0:     // We used to do this by setting the foreground and background
Chris@0:     // role, but it seems the background role is ignored and the
Chris@0:     // background drawn transparent in Qt 4.1 -- I can't quite see why
Chris@0:     
Chris@0:     QPixmap selectedMap(1, 1);
Chris@0:     selectedMap.fill(QApplication::palette().color(QPalette::Foreground));
Chris@0:     
Chris@0:     QPixmap unselectedMap(1, 1);
Chris@0:     unselectedMap.fill(QApplication::palette().color(QPalette::Background));
Chris@0: 
Chris@0:     while (i != m_panes.end()) {
Chris@0: 	if (*i == pane) {
Chris@0: 	    (*k)->setPixmap(selectedMap);
Chris@0: 	} else {
Chris@0: 	    (*k)->setPixmap(unselectedMap);
Chris@0: 	}
Chris@0: 	++i;
Chris@0: 	++k;
Chris@0:     }
Chris@0:     m_currentPane = pane;
Chris@0: 
Chris@0:     emit currentPaneChanged(m_currentPane);
Chris@0: }
Chris@0: 
Chris@0: Pane *
Chris@0: PaneStack::getCurrentPane() 
Chris@0: {
Chris@0:     return m_currentPane;
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: PaneStack::propertyContainerAdded(PropertyContainer *)
Chris@0: {
Chris@0:     sizePropertyStacks();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: PaneStack::propertyContainerRemoved(PropertyContainer *)
Chris@0: {
Chris@0:     sizePropertyStacks();
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: PaneStack::propertyContainerSelected(PropertyContainer *pc)
Chris@0: {
Chris@0:     std::vector<Pane *>::iterator i = m_panes.begin();
Chris@0:     std::vector<QWidget *>::iterator j = m_propertyStacks.begin();
Chris@0: 
Chris@0:     while (i != m_panes.end()) {
Chris@0: 	PropertyStack *stack = dynamic_cast<PropertyStack *>(*j);
Chris@0: 	if (stack && stack->containsContainer(pc)) {
Chris@0: 	    setCurrentPane(*i);
Chris@0: 	    break;
Chris@0: 	}
Chris@0: 	++i;
Chris@0: 	++j;
Chris@0:     }
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: PaneStack::paneInteractedWith()
Chris@0: {
Chris@0:     Pane *pane = dynamic_cast<Pane *>(sender());
Chris@0:     if (!pane) return;
Chris@0:     setCurrentPane(pane);
Chris@0: }
Chris@0: 
Chris@0: void
Chris@0: PaneStack::sizePropertyStacks()
Chris@0: {
Chris@0:     int maxMinWidth = 0;
Chris@0: 
Chris@0:     for (unsigned int i = 0; i < m_propertyStacks.size(); ++i) {
Chris@0: 	if (!m_propertyStacks[i]) continue;
Chris@0: 	std::cerr << "PaneStack::sizePropertyStacks: " << i << ": min " 
Chris@0: 		  << m_propertyStacks[i]->minimumSizeHint().width() << ", current "
Chris@0: 		  << m_propertyStacks[i]->width() << std::endl;
Chris@0: 
Chris@0: 	if (m_propertyStacks[i]->minimumSizeHint().width() > maxMinWidth) {
Chris@0: 	    maxMinWidth = m_propertyStacks[i]->minimumSizeHint().width();
Chris@0: 	}
Chris@0:     }
Chris@0: 
Chris@0:     std::cerr << "PaneStack::sizePropertyStacks: max min width " << maxMinWidth << std::endl;
Chris@0: 
Chris@0: #ifdef Q_WS_MAC
Chris@0:     // This is necessary to compensate for cb->setMinimumSize(10, 10)
Chris@0:     // in PropertyBox in the Mac version (to avoid a mysterious crash)
Chris@0:     int setWidth = maxMinWidth * 3 / 2;
Chris@0: #else
Chris@0:     int setWidth = maxMinWidth;
Chris@0: #endif
Chris@0: 
Chris@0:     for (unsigned int i = 0; i < m_propertyStacks.size(); ++i) {
Chris@0: 	if (!m_propertyStacks[i]) continue;
Chris@0: 	m_propertyStacks[i]->setMinimumWidth(setWidth);
Chris@0:     }
Chris@0: }
Chris@0:     
Chris@0: 
Chris@0: #ifdef INCLUDE_MOCFILES
Chris@0: #include "PaneStack.moc.cpp"
Chris@0: #endif
Chris@0: