view widgets/PaneStack.cpp @ 77:fd348f36c0d3

* Implement harmonic cursor in spectrogram
* Implement layer export.  This doesn't quite do the right thing for the SV
  XML layer export yet -- it doesn't include layer display information, so
  when imported, it only creates an invisible model.  Could also do with
  fixing CSV file import so as to work correctly for note and text layers.

/* -*- 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 <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);

    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 *)));
    }
    layout->addWidget(properties);
    layout->setStretchFactor(properties, 1);

    PaneRec rec;
    rec.pane = pane;
    rec.propertyStack = properties;
    rec.currentIndicator = currentIndicator;
    m_panes.push_back(rec);

    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].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);
	    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::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

    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