Long live Qt!

4 files changed, 404 insertions, 0 deletions

diff --git a/doc/src/snippets/sharedtablemodel/main.cpp b/doc/src/snippets/sharedtablemodel/main.cpp
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+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*
+  main.cpp
+
+  A simple example that shows how a single model can be shared between
+  multiple views.
+*/
+
+#include <QApplication>
+#include <QHeaderView>
+#include <QItemSelectionModel>
+#include <QTableView>
+
+#include "model.h"
+
+int main(int argc, char *argv[])
+{
+    QApplication app(argc, argv);
+
+    TableModel *model = new TableModel(4, 2, &app);
+
+//! [0]
+    QTableView *firstTableView = new QTableView;
+    QTableView *secondTableView = new QTableView;
+//! [0]
+
+//! [1]
+    firstTableView->setModel(model);
+    secondTableView->setModel(model);
+//! [1]
+
+    firstTableView->horizontalHeader()->setModel(model);
+
+    for (int row = 0; row < 4; ++row) {
+        for (int column = 0; column < 2; ++column) {
+            QModelIndex index = model->index(row, column, QModelIndex());
+            model->setData(index, QVariant(QString("(%1, %2)").arg(row).arg(column)));
+        }
+    }
+
+//! [2]
+    secondTableView->setSelectionModel(firstTableView->selectionModel());
+//! [2]
+
+    firstTableView->setWindowTitle("First table view");
+    secondTableView->setWindowTitle("Second table view");
+    firstTableView->show();
+    secondTableView->show();
+    return app.exec();
+}
diff --git a/doc/src/snippets/sharedtablemodel/model.cpp b/doc/src/snippets/sharedtablemodel/model.cpp
new file mode 100644
index 0000000..ad7d2ed
--- /dev/null
+++ b/doc/src/snippets/sharedtablemodel/model.cpp
@@ -0,0 +1,237 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*
+    model.cpp
+
+    Provides a table model for use in various examples.
+*/
+
+#include <QtGui>
+
+#include "model.h"
+
+/*!
+    Constructs a table model with at least one row and one column.
+*/
+
+TableModel::TableModel(int rows, int columns, QObject *parent)
+    : QAbstractTableModel(parent)
+{
+    QStringList newList;
+
+    for (int column = 0; column < qMax(1, columns); ++column) {
+        newList.append("");
+    }
+
+    for (int row = 0; row < qMax(1, rows); ++row) {
+        rowList.append(newList);
+    }
+}
+
+
+/*!
+    Returns the number of items in the row list as the number of rows
+    in the model.
+*/
+
+int TableModel::rowCount(const QModelIndex &/*parent*/) const
+{
+    return rowList.size();
+}
+
+/*!
+    Returns the number of items in the first list item as the number of
+    columns in the model. All rows should have the same number of columns.
+*/
+
+int TableModel::columnCount(const QModelIndex &/*parent*/) const
+{
+    return rowList[0].size();
+}
+
+/*!
+    Returns an appropriate value for the requested data.
+    If the view requests an invalid index, an invalid variant is returned.
+    Any valid index that corresponds to a string in the list causes that
+    string to be returned for the display role; otherwise an invalid variant
+    is returned.
+*/
+
+QVariant TableModel::data(const QModelIndex &index, int role) const
+{
+    if (!index.isValid())
+        return QVariant();
+
+    if (role == Qt::DisplayRole)
+        return rowList[index.row()][index.column()];
+    else
+        return QVariant();
+}
+
+/*!
+    Returns the appropriate header string depending on the orientation of
+    the header and the section. If anything other than the display role is
+    requested, we return an invalid variant.
+*/
+
+QVariant TableModel::headerData(int section, Qt::Orientation orientation,
+                                int role) const
+{
+    if (role != Qt::DisplayRole)
+        return QVariant();
+
+    if (orientation == Qt::Horizontal)
+        return QString("Column %1").arg(section);
+    else
+        return QString("Row %1").arg(section);
+}
+
+/*!
+    Returns an appropriate value for the item's flags. Valid items are
+    enabled, selectable, and editable.
+*/
+
+Qt::ItemFlags TableModel::flags(const QModelIndex &index) const
+{
+    if (!index.isValid())
+        return Qt::ItemIsEnabled;
+
+    return Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsEditable;
+}
+
+/*!
+    Changes an item in the model, but only if the following conditions
+    are met:
+
+    * The index supplied is valid.
+    * The role associated with editing text is specified.
+
+    The dataChanged() signal is emitted if the item is changed.
+*/
+
+bool TableModel::setData(const QModelIndex &index,
+                         const QVariant &value, int role)
+{
+    if (!index.isValid() || role != Qt::EditRole)
+        return false;
+
+    rowList[index.row()][index.column()] = value.toString();
+    emit dataChanged(index, index);
+    return true;
+}
+
+/*!
+    Inserts a number of rows into the model at the specified position.
+*/
+
+bool TableModel::insertRows(int position, int rows, const QModelIndex &parent)
+{
+    int columns = columnCount();
+    beginInsertRows(parent, position, position + rows - 1);
+
+    for (int row = 0; row < rows; ++row) {
+        QStringList items;
+        for (int column = 0; column < columns; ++column)
+            items.append("");
+        rowList.insert(position, items);
+    }
+
+    endInsertRows();
+    return true;
+}
+
+/*!
+    Inserts a number of columns into the model at the specified position.
+    Each entry in the list is extended in turn with the required number of
+    empty strings.
+*/
+
+bool TableModel::insertColumns(int position, int columns, const QModelIndex &parent)
+{
+    int rows = rowCount();
+    beginInsertColumns(parent, position, position + columns - 1);
+
+    for (int row = 0; row < rows; ++row) {
+        for (int column = position; column < columns; ++column) {
+            rowList[row].insert(position, "");
+        }
+    }
+
+    endInsertColumns();
+    return true;
+}
+
+/*!
+    Removes a number of rows from the model at the specified position.
+*/
+
+bool TableModel::removeRows(int position, int rows, const QModelIndex &parent)
+{
+    beginRemoveRows(parent, position, position + rows - 1);
+
+    for (int row = 0; row < rows; ++row) {
+        rowList.removeAt(position);
+    }
+
+    endRemoveRows();
+    return true;
+}
+
+/*!
+    Removes a number of columns from the model at the specified position.
+    Each row is shortened by the number of columns specified.
+*/
+
+bool TableModel::removeColumns(int position, int columns, const QModelIndex &parent)
+{
+    int rows = rowCount();
+    beginRemoveColumns(parent, position, position + columns - 1);
+
+    for (int row = 0; row < rows; ++row) {
+        for (int column = 0; column < columns; ++column) {
+            rowList[row].removeAt(position);
+        }
+    }
+
+    endRemoveColumns();
+    return true;
+}
diff --git a/doc/src/snippets/sharedtablemodel/model.h b/doc/src/snippets/sharedtablemodel/model.h
new file mode 100644
index 0000000..207f83a
--- /dev/null
+++ b/doc/src/snippets/sharedtablemodel/model.h
@@ -0,0 +1,75 @@
+/****************************************************************************
+**
+** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
+** Contact: Qt Software Information (qt-info@nokia.com)
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:LGPL$
+** No Commercial Usage
+** This file contains pre-release code and may not be distributed.
+** You may use this file in accordance with the terms and conditions
+** contained in the either Technology Preview License Agreement or the
+** Beta Release License Agreement.
+**
+** GNU Lesser General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU Lesser
+** General Public License version 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Nokia gives you certain
+** additional rights. These rights are described in the Nokia Qt LGPL
+** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
+** package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+** If you are unsure which license is appropriate for your use, please
+** contact the sales department at qt-sales@nokia.com.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#ifndef MODEL_H
+#define MODEL_H
+
+#include <QAbstractTableModel>
+#include <QStringList>
+#include <QVariant>
+
+class TableModel : public QAbstractTableModel
+{
+    Q_OBJECT
+
+public:
+    TableModel(int rows = 1, int columns = 1, QObject *parent = 0);
+
+    int rowCount(const QModelIndex &parent = QModelIndex()) const;
+    int columnCount(const QModelIndex &parent = QModelIndex()) const;
+    QVariant data(const QModelIndex &index, int role) const;
+    QVariant headerData(int section, Qt::Orientation orientation,
+                        int role = Qt::DisplayRole) const;
+
+    Qt::ItemFlags flags(const QModelIndex &index) const;
+    bool setData(const QModelIndex &index, const QVariant &value,
+                 int role = Qt::EditRole);
+
+    bool insertRows(int position, int rows, const QModelIndex &parent = QModelIndex());
+    bool insertColumns(int position, int columns, const QModelIndex &parent = QModelIndex());
+    bool removeRows(int position, int rows, const QModelIndex &parent = QModelIndex());
+    bool removeColumns(int position, int columns, const QModelIndex &parent = QModelIndex());
+
+private:
+    QList<QStringList> rowList;
+};
+
+#endif
diff --git a/doc/src/snippets/sharedtablemodel/sharedtablemodel.pro b/doc/src/snippets/sharedtablemodel/sharedtablemodel.pro
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+++ b/doc/src/snippets/sharedtablemodel/sharedtablemodel.pro
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+HEADERS += model.h
+SOURCES += main.cpp model.cpp