diff view/PaneStack.cpp @ 127:89c625dda204

* Reorganising code base.  This revision will not compile.

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/view/PaneStack.cpp	Mon Jul 31 11:44:37 2006 +0000
@@ -0,0 +1,434 @@
+
+/* -*- 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 "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 <QSplitter>
+#include <QStackedWidget>
+
+#include <iostream>
+
+PaneStack::PaneStack(QWidget *parent, ViewManager *viewManager) :
+    QFrame(parent),
+    m_currentPane(0),
+    m_splitter(new QSplitter),
+    m_propertyStackStack(new QStackedWidget),
+    m_viewManager(viewManager),
+    m_layoutStyle(PropertyStackPerPaneLayout)
+{
+    QHBoxLayout *layout = new QHBoxLayout;
+    layout->setMargin(0);
+    layout->setSpacing(0);
+
+    m_splitter->setOrientation(Qt::Vertical);
+    m_splitter->setOpaqueResize(false);
+
+    layout->addWidget(m_splitter);
+    layout->setStretchFactor(m_splitter, 1);
+    layout->addWidget(m_propertyStackStack);
+    m_propertyStackStack->hide();
+
+    setLayout(layout);
+}
+
+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);
+
+    Pane *pane = new Pane(frame);
+    pane->setViewManager(m_viewManager);
+    layout->addWidget(pane);
+    layout->setStretchFactor(pane, 10);
+
+    QWidget *properties = 0;
+    if (suppressPropertyBox) {
+	properties = new QFrame();
+    } else {
+	properties = new PropertyStack(frame, pane);
+	connect(properties, SIGNAL(propertyContainerSelected(View *, PropertyContainer *)),
+		this, SLOT(propertyContainerSelected(View *, PropertyContainer *)));
+    }
+    if (m_layoutStyle == PropertyStackPerPaneLayout) {
+        layout->addWidget(properties);
+    } else {
+        properties->setParent(m_propertyStackStack);
+        m_propertyStackStack->addWidget(properties);
+    }
+    layout->setStretchFactor(properties, 1);
+
+    PaneRec rec;
+    rec.pane = pane;
+    rec.propertyStack = properties;
+    rec.currentIndicator = currentIndicator;
+    rec.frame = frame;
+    rec.layout = layout;
+    m_panes.push_back(rec);
+
+    frame->setLayout(layout);
+    m_splitter->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()));
+    connect(pane, SIGNAL(rightButtonMenuRequested(QPoint)),
+            this, SLOT(rightButtonMenuRequested(QPoint)));
+
+    if (!m_currentPane) {
+	setCurrentPane(pane);
+    }
+
+    return pane;
+}
+
+void
+PaneStack::setLayoutStyle(LayoutStyle style)
+{
+    if (style == m_layoutStyle) return;
+    m_layoutStyle = style;
+
+    std::vector<PaneRec>::iterator i;
+
+    switch (style) {
+
+    case SinglePropertyStackLayout:
+        
+        for (i = m_panes.begin(); i != m_panes.end(); ++i) {
+            i->layout->removeWidget(i->propertyStack);
+            i->propertyStack->setParent(m_propertyStackStack);
+            m_propertyStackStack->addWidget(i->propertyStack);
+        }
+        m_propertyStackStack->show();
+        break;
+
+    case PropertyStackPerPaneLayout:
+
+        for (i = m_panes.begin(); i != m_panes.end(); ++i) {
+            m_propertyStackStack->removeWidget(i->propertyStack);
+            i->propertyStack->setParent(i->frame);
+            i->layout->addWidget(i->propertyStack);
+            i->propertyStack->show();
+        }
+        m_propertyStackStack->hide();
+        break;
+    }
+}
+
+Pane *
+PaneStack::getPane(int n)
+{
+    return m_panes[n].pane;
+}
+
+Pane *
+PaneStack::getHiddenPane(int n)
+{
+    return m_hiddenPanes[n].pane;
+}
+
+void
+PaneStack::deletePane(Pane *pane)
+{
+    std::vector<PaneRec>::iterator i;
+    bool found = false;
+
+    for (i = m_panes.begin(); i != m_panes.end(); ++i) {
+	if (i->pane == pane) {
+	    m_panes.erase(i);
+	    found = true;
+	    break;
+	}
+    }
+
+    if (!found) {
+
+	for (i = m_hiddenPanes.begin(); i != m_hiddenPanes.end(); ++i) {
+	    if (i->pane == pane) {
+		m_hiddenPanes.erase(i);
+		found = true;
+		break;
+	    }
+	}
+
+	if (!found) {
+	    std::cerr << "WARNING: PaneStack::deletePane(" << pane << "): Pane not found in visible or hidden panes, not deleting" << std::endl;
+	    return;
+	}
+    }
+
+    delete pane->parent();
+
+    if (m_currentPane == pane) {
+	if (m_panes.size() > 0) {
+            setCurrentPane(m_panes[0].pane);
+	} else {
+	    setCurrentPane(0);
+	}
+    }
+}
+
+int
+PaneStack::getPaneCount() const
+{
+    return m_panes.size();
+}
+
+int
+PaneStack::getHiddenPaneCount() const
+{
+    return m_hiddenPanes.size();
+}
+
+void
+PaneStack::hidePane(Pane *pane)
+{
+    std::vector<PaneRec>::iterator i = m_panes.begin();
+
+    while (i != m_panes.end()) {
+	if (i->pane == pane) {
+
+	    m_hiddenPanes.push_back(*i);
+	    m_panes.erase(i);
+
+	    QWidget *pw = dynamic_cast<QWidget *>(pane->parent());
+	    if (pw) pw->hide();
+
+	    if (m_currentPane == pane) {
+		if (m_panes.size() > 0) {
+		    setCurrentPane(m_panes[0].pane);
+		} else {
+		    setCurrentPane(0);
+		}
+	    }
+	    
+	    return;
+	}
+	++i;
+    }
+
+    std::cerr << "WARNING: PaneStack::hidePane(" << pane << "): Pane not found in visible panes" << std::endl;
+}
+
+void
+PaneStack::showPane(Pane *pane)
+{
+    std::vector<PaneRec>::iterator i = m_hiddenPanes.begin();
+
+    while (i != m_hiddenPanes.end()) {
+	if (i->pane == pane) {
+	    m_panes.push_back(*i);
+	    m_hiddenPanes.erase(i);
+	    QWidget *pw = dynamic_cast<QWidget *>(pane->parent());
+	    if (pw) pw->show();
+
+	    //!!! update current pane
+
+	    return;
+	}
+	++i;
+    }
+
+    std::cerr << "WARNING: PaneStack::showPane(" << pane << "): Pane not found in hidden panes" << std::endl;
+}
+
+void
+PaneStack::setCurrentPane(Pane *pane) // may be null
+{
+    if (m_currentPane == pane) return;
+    
+    std::vector<PaneRec>::iterator i = m_panes.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));
+
+    bool found = false;
+
+    while (i != m_panes.end()) {
+	if (i->pane == pane) {
+	    i->currentIndicator->setPixmap(selectedMap);
+            if (m_layoutStyle == SinglePropertyStackLayout) {
+                m_propertyStackStack->setCurrentWidget(i->propertyStack);
+            }
+	    found = true;
+	} else {
+	    i->currentIndicator->setPixmap(unselectedMap);
+	}
+	++i;
+    }
+
+    if (found || pane == 0) {
+	m_currentPane = pane;
+	emit currentPaneChanged(m_currentPane);
+    } else {
+	std::cerr << "WARNING: PaneStack::setCurrentPane(" << pane << "): pane is not a visible pane in this stack" << std::endl;
+    }
+}
+
+void
+PaneStack::setCurrentLayer(Pane *pane, Layer *layer) // may be null
+{
+    setCurrentPane(pane);
+
+    if (m_currentPane) {
+
+	std::vector<PaneRec>::iterator i = m_panes.begin();
+
+	while (i != m_panes.end()) {
+
+	    if (i->pane == pane) {
+		PropertyStack *stack = dynamic_cast<PropertyStack *>
+		    (i->propertyStack);
+		if (stack) {
+		    if (stack->containsContainer(layer)) {
+			stack->setCurrentIndex(stack->getContainerIndex(layer));
+			emit currentLayerChanged(pane, layer);
+		    } else {
+			stack->setCurrentIndex
+			    (stack->getContainerIndex
+			     (pane->getPropertyContainer(0)));
+			emit currentLayerChanged(pane, 0);
+		    }
+		}
+		break;
+	    }
+	    ++i;
+	}
+    }
+}
+
+Pane *
+PaneStack::getCurrentPane() 
+{
+    return m_currentPane;
+}
+
+void
+PaneStack::propertyContainerAdded(PropertyContainer *)
+{
+    sizePropertyStacks();
+}
+
+void
+PaneStack::propertyContainerRemoved(PropertyContainer *)
+{
+    sizePropertyStacks();
+}
+
+void
+PaneStack::propertyContainerSelected(View *client, PropertyContainer *pc)
+{
+    std::vector<PaneRec>::iterator i = m_panes.begin();
+
+    while (i != m_panes.end()) {
+	PropertyStack *stack = dynamic_cast<PropertyStack *>(i->propertyStack);
+	if (stack &&
+	    stack->getClient() == client &&
+	    stack->containsContainer(pc)) {
+	    setCurrentPane(i->pane);
+	    break;
+	}
+	++i;
+    }
+
+    Layer *layer = dynamic_cast<Layer *>(pc);
+    if (layer) emit currentLayerChanged(m_currentPane, layer);
+    else emit currentLayerChanged(m_currentPane, 0);
+}
+
+void
+PaneStack::paneInteractedWith()
+{
+    Pane *pane = dynamic_cast<Pane *>(sender());
+    if (!pane) return;
+    setCurrentPane(pane);
+}
+
+void
+PaneStack::rightButtonMenuRequested(QPoint position)
+{
+    Pane *pane = dynamic_cast<Pane *>(sender());
+    if (!pane) return;
+    emit rightButtonMenuRequested(pane, position);
+}
+
+void
+PaneStack::sizePropertyStacks()
+{
+    int maxMinWidth = 0;
+
+    for (size_t i = 0; i < m_panes.size(); ++i) {
+	if (!m_panes[i].propertyStack) continue;
+//	std::cerr << "PaneStack::sizePropertyStacks: " << i << ": min " 
+//		  << m_panes[i].propertyStack->minimumSizeHint().width() << ", current "
+//		  << m_panes[i].propertyStack->width() << std::endl;
+
+	if (m_panes[i].propertyStack->minimumSizeHint().width() > maxMinWidth) {
+	    maxMinWidth = m_panes[i].propertyStack->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
+
+    m_propertyStackStack->setMaximumWidth(setWidth + 10);
+
+    for (size_t i = 0; i < m_panes.size(); ++i) {
+	if (!m_panes[i].propertyStack) continue;
+	m_panes[i].propertyStack->setMinimumWidth(setWidth);
+    }
+}
+    
+
+#ifdef INCLUDE_MOCFILES
+#include "PaneStack.moc.cpp"
+#endif
+