diff widgets/PaneStack.cpp @ 0:2a4f26e85b4c

initial import

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/widgets/PaneStack.cpp	Tue Jan 10 16:33:16 2006 +0000
@@ -0,0 +1,239 @@
+
+/* -*- c-basic-offset: 4 -*-  vi:set ts=8 sts=4 sw=4: */
+
+/*
+    A waveform viewer and audio annotation editor.
+    Chris Cannam, Queen Mary University of London, 2005
+    
+    This is experimental software.  Not for distribution.
+*/
+
+#include "PaneStack.h"
+
+#include "widgets/Pane.h"
+#include "widgets/PropertyStack.h"
+#include "base/Layer.h"
+#include "base/ViewManager.h"
+
+#include <QApplication>
+#include <QHBoxLayout>
+#include <QPainter>
+#include <QPalette>
+#include <QLabel>
+
+#include <iostream>
+
+PaneStack::PaneStack(QWidget *parent, ViewManager *viewManager) :
+    QSplitter(parent),
+    m_currentPane(0),
+    m_viewManager(viewManager)
+{
+    setOrientation(Qt::Vertical);
+    setOpaqueResize(false);
+}
+
+Pane *
+PaneStack::addPane(bool suppressPropertyBox)
+{
+    QFrame *frame = new QFrame;
+    QHBoxLayout *layout = new QHBoxLayout;
+    layout->setMargin(0);
+    layout->setSpacing(2);
+
+    QLabel *currentIndicator = new QLabel(frame);
+    currentIndicator->setFixedWidth(QPainter(this).fontMetrics().width("x"));
+    layout->addWidget(currentIndicator);
+    layout->setStretchFactor(currentIndicator, 1);
+    currentIndicator->setScaledContents(true);
+    m_currentIndicators.push_back(currentIndicator);
+
+    Pane *pane = new Pane(frame);
+    pane->setViewManager(m_viewManager);
+    layout->addWidget(pane);
+    layout->setStretchFactor(pane, 10);
+    m_panes.push_back(pane);
+
+    QWidget *properties = 0;
+    if (suppressPropertyBox) {
+	properties = new QFrame();
+    } else {
+	properties = new PropertyStack(frame, pane);
+	connect(properties, SIGNAL(propertyContainerSelected(PropertyContainer *)),
+		this, SLOT(propertyContainerSelected(PropertyContainer *)));
+    }
+    layout->addWidget(properties);
+    layout->setStretchFactor(properties, 1);
+    m_propertyStacks.push_back(properties);
+
+    frame->setLayout(layout);
+    addWidget(frame);
+
+    connect(pane, SIGNAL(propertyContainerAdded(PropertyContainer *)),
+	    this, SLOT(propertyContainerAdded(PropertyContainer *)));
+    connect(pane, SIGNAL(propertyContainerRemoved(PropertyContainer *)),
+	    this, SLOT(propertyContainerRemoved(PropertyContainer *)));
+    connect(pane, SIGNAL(paneInteractedWith()),
+	    this, SLOT(paneInteractedWith()));
+
+    if (!m_currentPane) {
+	setCurrentPane(pane);
+    }
+
+    return pane;
+}
+
+Pane *
+PaneStack::getPane(int n)
+{
+    return m_panes[n];
+}
+
+void
+PaneStack::deletePane(Pane *pane)
+{
+    int n = 0;
+    std::vector<Pane *>::iterator i = m_panes.begin();
+    std::vector<QWidget *>::iterator j = m_propertyStacks.begin();
+    std::vector<QLabel *>::iterator k = m_currentIndicators.begin();
+
+    while (i != m_panes.end()) {
+	if (*i == pane) break;
+	++i;
+	++j;
+	++k;
+	++n;
+    }
+    if (n >= int(m_panes.size())) return;
+
+    m_panes.erase(i);
+    m_propertyStacks.erase(j);
+    m_currentIndicators.erase(k);
+    delete widget(n);
+
+    if (m_currentPane == pane) {
+	if (m_panes.size() > 0) {
+	    setCurrentPane(m_panes[0]);
+	} else {
+	    setCurrentPane(0);
+	}
+    }
+}
+
+int
+PaneStack::getPaneCount() const
+{
+    return m_panes.size();
+}
+
+void
+PaneStack::setCurrentPane(Pane *pane) // may be null
+{
+    if (m_currentPane == pane) return;
+    
+    std::vector<Pane *>::iterator i = m_panes.begin();
+    std::vector<QLabel *>::iterator k = m_currentIndicators.begin();
+
+    // We used to do this by setting the foreground and background
+    // role, but it seems the background role is ignored and the
+    // background drawn transparent in Qt 4.1 -- I can't quite see why
+    
+    QPixmap selectedMap(1, 1);
+    selectedMap.fill(QApplication::palette().color(QPalette::Foreground));
+    
+    QPixmap unselectedMap(1, 1);
+    unselectedMap.fill(QApplication::palette().color(QPalette::Background));
+
+    while (i != m_panes.end()) {
+	if (*i == pane) {
+	    (*k)->setPixmap(selectedMap);
+	} else {
+	    (*k)->setPixmap(unselectedMap);
+	}
+	++i;
+	++k;
+    }
+    m_currentPane = pane;
+
+    emit currentPaneChanged(m_currentPane);
+}
+
+Pane *
+PaneStack::getCurrentPane() 
+{
+    return m_currentPane;
+}
+
+void
+PaneStack::propertyContainerAdded(PropertyContainer *)
+{
+    sizePropertyStacks();
+}
+
+void
+PaneStack::propertyContainerRemoved(PropertyContainer *)
+{
+    sizePropertyStacks();
+}
+
+void
+PaneStack::propertyContainerSelected(PropertyContainer *pc)
+{
+    std::vector<Pane *>::iterator i = m_panes.begin();
+    std::vector<QWidget *>::iterator j = m_propertyStacks.begin();
+
+    while (i != m_panes.end()) {
+	PropertyStack *stack = dynamic_cast<PropertyStack *>(*j);
+	if (stack && stack->containsContainer(pc)) {
+	    setCurrentPane(*i);
+	    break;
+	}
+	++i;
+	++j;
+    }
+}
+
+void
+PaneStack::paneInteractedWith()
+{
+    Pane *pane = dynamic_cast<Pane *>(sender());
+    if (!pane) return;
+    setCurrentPane(pane);
+}
+
+void
+PaneStack::sizePropertyStacks()
+{
+    int maxMinWidth = 0;
+
+    for (unsigned int i = 0; i < m_propertyStacks.size(); ++i) {
+	if (!m_propertyStacks[i]) continue;
+	std::cerr << "PaneStack::sizePropertyStacks: " << i << ": min " 
+		  << m_propertyStacks[i]->minimumSizeHint().width() << ", current "
+		  << m_propertyStacks[i]->width() << std::endl;
+
+	if (m_propertyStacks[i]->minimumSizeHint().width() > maxMinWidth) {
+	    maxMinWidth = m_propertyStacks[i]->minimumSizeHint().width();
+	}
+    }
+
+    std::cerr << "PaneStack::sizePropertyStacks: max min width " << maxMinWidth << std::endl;
+
+#ifdef Q_WS_MAC
+    // This is necessary to compensate for cb->setMinimumSize(10, 10)
+    // in PropertyBox in the Mac version (to avoid a mysterious crash)
+    int setWidth = maxMinWidth * 3 / 2;
+#else
+    int setWidth = maxMinWidth;
+#endif
+
+    for (unsigned int i = 0; i < m_propertyStacks.size(); ++i) {
+	if (!m_propertyStacks[i]) continue;
+	m_propertyStacks[i]->setMinimumWidth(setWidth);
+    }
+}
+    
+
+#ifdef INCLUDE_MOCFILES
+#include "PaneStack.moc.cpp"
+#endif
+