diff options
Diffstat (limited to 'examples/widgets/itemviews')
5 files changed, 101 insertions, 4 deletions
diff --git a/examples/widgets/itemviews/fetchmore/filelistmodel.cpp b/examples/widgets/itemviews/fetchmore/filelistmodel.cpp index cd21712e04..086d45eca3 100644 --- a/examples/widgets/itemviews/fetchmore/filelistmodel.cpp +++ b/examples/widgets/itemviews/fetchmore/filelistmodel.cpp @@ -103,6 +103,9 @@ void FileListModel::fetchMore(const QModelIndex & /* index */) int remainder = fileList.size() - fileCount; int itemsToFetch = qMin(100, remainder); + if (itemsToFetch <= 0) + return; + beginInsertRows(QModelIndex(), fileCount, fileCount+itemsToFetch-1); fileCount += itemsToFetch; diff --git a/examples/widgets/itemviews/flattreeview/flattreeview.pro b/examples/widgets/itemviews/flattreeview/flattreeview.pro new file mode 100644 index 0000000000..05a6573d33 --- /dev/null +++ b/examples/widgets/itemviews/flattreeview/flattreeview.pro @@ -0,0 +1,7 @@ +QT += widgets + +SOURCES = main.cpp + +# install +target.path = $$[QT_INSTALL_EXAMPLES]/widgets/itemviews/flattreeview +INSTALLS += target diff --git a/examples/widgets/itemviews/flattreeview/main.cpp b/examples/widgets/itemviews/flattreeview/main.cpp new file mode 100644 index 0000000000..e9bbb3fab1 --- /dev/null +++ b/examples/widgets/itemviews/flattreeview/main.cpp @@ -0,0 +1,84 @@ +/**************************************************************************** +** +** Copyright (C) 2017 Klaralvdalens Datakonsult AB, a KDAB Group company, info@kdab.com, author David Faure <david.faure@kdab.com> +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the examples of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:BSD$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** BSD License Usage +** Alternatively, you may use this file under the terms of the BSD license +** as follows: +** +** "Redistribution and use in source and binary forms, with or without +** modification, are permitted provided that the following conditions are +** met: +** * Redistributions of source code must retain the above copyright +** notice, this list of conditions and the following disclaimer. +** * Redistributions in binary form must reproduce the above copyright +** notice, this list of conditions and the following disclaimer in +** the documentation and/or other materials provided with the +** distribution. +** * Neither the name of The Qt Company Ltd nor the names of its +** contributors may be used to endorse or promote products derived +** from this software without specific prior written permission. +** +** +** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS +** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT +** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR +** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT +** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, +** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT +** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE +** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE." +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +/* + main.cpp + + A simple example that shows a multi-column list using QTreeView. + The data is not a tree, so the first column was made movable. +*/ + +#include <QApplication> +#include <QHeaderView> +#include <QStandardItemModel> +#include <QTreeView> + +int main(int argc, char *argv[]) +{ + QApplication app(argc, argv); + + QStandardItemModel model(4, 2); + QTreeView treeView; + treeView.setModel(&model); + treeView.setRootIsDecorated(false); + treeView.header()->setFirstSectionMovable(true); + treeView.header()->setStretchLastSection(true); + + 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((row + 1) * (column + 1))); + } + } + + treeView.setWindowTitle(QObject::tr("Flat Tree View")); + treeView.show(); + return app.exec(); +} diff --git a/examples/widgets/itemviews/itemviews.pro b/examples/widgets/itemviews/itemviews.pro index 787217a8e8..75307bd74e 100644 --- a/examples/widgets/itemviews/itemviews.pro +++ b/examples/widgets/itemviews/itemviews.pro @@ -8,6 +8,7 @@ SUBDIRS = addressbook \ dirview \ editabletreemodel \ fetchmore \ + flattreeview \ frozencolumn \ interview \ pixelator \ diff --git a/examples/widgets/itemviews/puzzle/piecesmodel.cpp b/examples/widgets/itemviews/puzzle/piecesmodel.cpp index f0649d3776..28b46836f4 100644 --- a/examples/widgets/itemviews/puzzle/piecesmodel.cpp +++ b/examples/widgets/itemviews/puzzle/piecesmodel.cpp @@ -203,10 +203,12 @@ Qt::DropActions PiecesModel::supportedDropActions() const void PiecesModel::addPieces(const QPixmap& pixmap) { - beginRemoveRows(QModelIndex(), 0, 24); - pixmaps.clear(); - locations.clear(); - endRemoveRows(); + if (!pixmaps.isEmpty()) { + beginRemoveRows(QModelIndex(), 0, pixmaps.size() - 1); + pixmaps.clear(); + locations.clear(); + endRemoveRows(); + } for (int y = 0; y < 5; ++y) { for (int x = 0; x < 5; ++x) { QPixmap pieceImage = pixmap.copy(x*m_PieceSize, y*m_PieceSize, m_PieceSize, m_PieceSize); |