view widgets/ModelDataTableDialog.cpp @ 640:c6d705bf1672

Merge from branch "qt5". This revision actually builds with Qt4 (late releases) or Qt5, though it will warn on configure with Qt4.
author Chris Cannam
date Tue, 14 May 2013 12:36:43 +0100
parents 4806715f7a19
children 3437e0fad7ae 1a0dfcbffaf1
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/* -*- 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 2008 QMUL.
    
    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 "ModelDataTableDialog.h"

#include "data/model/ModelDataTableModel.h"
#include "data/model/TabularModel.h"
#include "data/model/Model.h"

#include "CommandHistory.h"
#include "IconLoader.h"

#include <QTableView>
#include <QLineEdit>
#include <QGridLayout>
#include <QLabel>
#include <QGroupBox>
#include <QDialogButtonBox>
#include <QHeaderView>
#include <QApplication>
#include <QDesktopWidget>
#include <QAction>
#include <QToolBar>

#include <iostream>

ModelDataTableDialog::ModelDataTableDialog(TabularModel *model,
                                           QString title, QWidget *parent) :
    QMainWindow(parent),
    m_currentRow(0),
    m_trackPlayback(true)
{
    setWindowTitle(tr("Data Editor"));

    QToolBar *toolbar;

    toolbar = addToolBar(tr("Playback Toolbar"));
    m_playToolbar = toolbar;
    toolbar = addToolBar(tr("Play Mode Toolbar"));
    
    IconLoader il;

    QAction *action = new QAction(il.load("playfollow"), tr("Track Playback"), this);
    action->setStatusTip(tr("Toggle tracking of playback position"));
    action->setCheckable(true);
    action->setChecked(m_trackPlayback);
    connect(action, SIGNAL(triggered()), this, SLOT(togglePlayTracking()));
    toolbar->addAction(action);

    toolbar = addToolBar(tr("Edit Toolbar"));

    action = new QAction(il.load("datainsert"), tr("Insert New Item"), this);
    action->setShortcut(tr("Insert"));
    action->setStatusTip(tr("Insert a new item"));
    connect(action, SIGNAL(triggered()), this, SLOT(insertRow()));
    toolbar->addAction(action);

    action = new QAction(il.load("datadelete"), tr("Delete Selected Items"), this);
    action->setShortcut(tr("Delete"));
    action->setStatusTip(tr("Delete the selected item or items"));
    connect(action, SIGNAL(triggered()), this, SLOT(deleteRows()));
    toolbar->addAction(action);

    CommandHistory::getInstance()->registerToolbar(toolbar);

/*
    action = new QAction(il.load("dataedit"), tr("Edit Selected Item"), this);
    action->setShortcut(tr("Edit"));
    action->setStatusTip(tr("Edit the selected item"));
    connect(action, SIGNAL(triggered()), this, SLOT(editRow()));
    toolbar->addAction(action);
*/

    QFrame *mainFrame = new QFrame;
    setCentralWidget(mainFrame);

    QGridLayout *grid = new QGridLayout;
    mainFrame->setLayout(grid);
    
    QGroupBox *box = new QGroupBox;
    if (title != "") {
        box->setTitle(title);
    } else {
        box->setTitle(tr("Data in Layer"));
    }
    grid->addWidget(box, 0, 0);
    grid->setRowStretch(0, 15);

    QGridLayout *subgrid = new QGridLayout;
    box->setLayout(subgrid);

    subgrid->setSpacing(0);
    subgrid->setMargin(5);

    subgrid->addWidget(new QLabel(tr("Find:")), 1, 0);
    subgrid->addWidget(new QLabel(tr(" ")), 1, 1);
    m_find = new QLineEdit;
    subgrid->addWidget(m_find, 1, 2);
    connect(m_find, SIGNAL(textChanged(const QString &)),
            this, SLOT(searchTextChanged(const QString &)));
    connect(m_find, SIGNAL(returnPressed()),
            this, SLOT(searchRepeated()));

    m_tableView = new QTableView;
    subgrid->addWidget(m_tableView, 0, 0, 1, 3);

    m_tableView->setSortingEnabled(true);
    m_tableView->sortByColumn(0, Qt::AscendingOrder);

    m_table = new ModelDataTableModel(model);
    m_tableView->setModel(m_table);

    m_tableView->horizontalHeader()->setStretchLastSection(true);

    connect(m_tableView, SIGNAL(clicked(const QModelIndex &)),
            this, SLOT(viewClicked(const QModelIndex &)));
    connect(m_tableView, SIGNAL(pressed(const QModelIndex &)),
            this, SLOT(viewPressed(const QModelIndex &)));
    connect(m_tableView->selectionModel(),
            SIGNAL(currentChanged(const QModelIndex &, const QModelIndex &)),
            this,
            SLOT(currentChanged(const QModelIndex &, const QModelIndex &)));
    connect(m_table, SIGNAL(addCommand(Command *)),
            this, SLOT(addCommand(Command *)));
    connect(m_table, SIGNAL(currentChanged(const QModelIndex &)),
            this, SLOT(currentChangedThroughResort(const QModelIndex &)));
    connect(m_table, SIGNAL(modelRemoved()),
            this, SLOT(modelRemoved()));

    QDialogButtonBox *bb = new QDialogButtonBox(QDialogButtonBox::Close);
    connect(bb, SIGNAL(rejected()), this, SLOT(close()));
    grid->addWidget(bb, 2, 0);
    grid->setRowStretch(2, 0);
    
    QDesktopWidget *desktop = QApplication::desktop();
    QRect available = desktop->availableGeometry();

    int width = available.width() / 3;
    int height = available.height() / 2;
    if (height < 370) {
        if (available.height() > 500) height = 370;
    }
    if (width < 650) {
        if (available.width() > 750) width = 650;
        else if (width < 500) {
            if (available.width() > 650) width = 500;
        }
    }

    resize(width, height);
}

ModelDataTableDialog::~ModelDataTableDialog()
{
    delete m_table;
}

void
ModelDataTableDialog::userScrolledToFrame(unsigned long frame)
{
    QModelIndex index = m_table->getModelIndexForFrame(frame);
    makeCurrent(index.row());
}

void
ModelDataTableDialog::playbackScrolledToFrame(unsigned long frame)
{
    if (m_trackPlayback) {
        QModelIndex index = m_table->getModelIndexForFrame(frame);
        makeCurrent(index.row());
    }
}

void
ModelDataTableDialog::searchTextChanged(const QString &text)
{
    QModelIndex mi = m_table->findText(text);
    if (mi.isValid()) {
        makeCurrent(mi.row());
        m_tableView->selectionModel()->setCurrentIndex
            (mi, QItemSelectionModel::ClearAndSelect);
    }
}

void
ModelDataTableDialog::searchRepeated()
{
    QModelIndex mi = m_table->findText(m_find->text());
    if (mi.isValid()) {
        makeCurrent(mi.row());
        m_tableView->selectionModel()->setCurrentIndex
            (mi, QItemSelectionModel::ClearAndSelect);
    }
}

void
ModelDataTableDialog::makeCurrent(int row)
{
    int rh = m_tableView->height() / m_tableView->rowHeight(0);
    int topRow = row - rh/4;
    if (topRow < 0) topRow = 0;
    
    // should only scroll if the desired row is not currently visible

    // should only select if no part of the desired row is currently selected

//    std::cerr << "rh = " << rh << ", row = " << row << ", scrolling to "
//              << topRow << std::endl;

    int pos = m_tableView->rowViewportPosition(row);

    if (pos < 0 || pos >= m_tableView->height() - rh) {
        m_tableView->scrollTo(m_table->index(topRow, 0));
    }

    bool haveRowSelected = false;
    for (int i = 0; i < m_table->columnCount(); ++i) {
        if (m_tableView->selectionModel()->isSelected(m_table->index(row, i))) {
            haveRowSelected = true;
            break;
        }
    }

    if (!haveRowSelected) {
        m_tableView->selectionModel()->setCurrentIndex
            (m_table->index(row, 0),
             QItemSelectionModel::ClearAndSelect | QItemSelectionModel::Rows);
    }
}

void
ModelDataTableDialog::viewClicked(const QModelIndex &index)
{
//    SVDEBUG << "ModelDataTableDialog::viewClicked: " << index.row() << ", " << index.column() << endl;
    emit scrollToFrame(m_table->getFrameForModelIndex(index));
}

void
ModelDataTableDialog::viewPressed(const QModelIndex &index)
{
//    SVDEBUG << "ModelDataTableDialog::viewPressed: " << index.row() << ", " << index.column() << endl;
}

void
ModelDataTableDialog::currentChanged(const QModelIndex &current,
                                     const QModelIndex &previous)
{
//    SVDEBUG << "ModelDataTableDialog::currentChanged: from "
//              << previous.row() << ", " << previous.column()
//              << " to " << current.row() << ", " << current.column() 
//              << endl;
    m_currentRow = current.row();
    m_table->setCurrentRow(m_currentRow);
}

void
ModelDataTableDialog::insertRow()
{
    m_table->insertRow(m_currentRow);
}

void
ModelDataTableDialog::deleteRows()
{
    // not efficient
    while (m_tableView->selectionModel()->hasSelection()) {
        m_table->removeRow
            (m_tableView->selectionModel()->selection().indexes().begin()->row());
    }
}

void
ModelDataTableDialog::editRow()
{
}

void
ModelDataTableDialog::addCommand(Command *command)
{
    CommandHistory::getInstance()->addCommand(command, false, true);
}

void
ModelDataTableDialog::togglePlayTracking()
{
    m_trackPlayback = !m_trackPlayback;
}

void
ModelDataTableDialog::currentChangedThroughResort(const QModelIndex &index)
{
//    SVDEBUG << "ModelDataTableDialog::currentChangedThroughResort: row = " << index.row() << endl;
//  m_tableView->scrollTo(index);
    makeCurrent(index.row());
}

void
ModelDataTableDialog::modelRemoved()
{
    close();
}