e724fd4710
QtWidgets/Drill Down example uses images and information about Nokia's
old office locations as content. This change updates the example to
use concepts related to Qt instead.
In addition,
- Documentation, screenshot updated accordingly
- Corrected aspect ratio when scaling image items in the scene
- Added a gray background with a slight gradient
- Removed Symbian-specific code remnant
Task-number: QTBUG-31075
Change-Id: Id8abfbf7f4033f74172477570f8f28390854101c
Reviewed-by: Friedemann Kleint <Friedemann.Kleint@digia.com>
Reviewed-by: Jerome Pasion <jerome.pasion@digia.com>
164 lines
5.0 KiB
C++
164 lines
5.0 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
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** Contact: http://www.qt-project.org/legal
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Digia Plc and its Subsidiary(-ies) nor the names
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** of its contributors may be used to endorse or promote products derived
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** from this software without specific prior written permission.
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**
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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**
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "informationwindow.h"
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//! [0]
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InformationWindow::InformationWindow(int id, QSqlRelationalTableModel *items,
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QWidget *parent)
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: QDialog(parent)
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{
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//! [0] //! [1]
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QLabel *itemLabel = new QLabel(tr("Item: "));
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QLabel *descriptionLabel = new QLabel(tr("Description: "));
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QLabel *imageFileLabel = new QLabel(tr("Image file: "));
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createButtons();
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itemText = new QLabel;
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descriptionEditor = new QTextEdit;
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//! [1]
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//! [2]
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imageFileEditor = new QComboBox;
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imageFileEditor->setModel(items->relationModel(1));
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imageFileEditor->setModelColumn(items->relationModel(1)->fieldIndex("file"));
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//! [2]
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//! [3]
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mapper = new QDataWidgetMapper(this);
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mapper->setModel(items);
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mapper->setSubmitPolicy(QDataWidgetMapper::ManualSubmit);
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mapper->setItemDelegate(new QSqlRelationalDelegate(mapper));
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mapper->addMapping(imageFileEditor, 1);
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mapper->addMapping(itemText, 2, "text");
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mapper->addMapping(descriptionEditor, 3);
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mapper->setCurrentIndex(id);
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//! [3]
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//! [4]
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connect(descriptionEditor, SIGNAL(textChanged()),
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this, SLOT(enableButtons()));
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connect(imageFileEditor, SIGNAL(currentIndexChanged(int)),
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this, SLOT(enableButtons()));
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QFormLayout *formLayout = new QFormLayout;
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formLayout->addRow(itemLabel, itemText);
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formLayout->addRow(imageFileLabel, imageFileEditor);
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formLayout->addRow(descriptionLabel, descriptionEditor);
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QVBoxLayout *layout = new QVBoxLayout;
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layout->addLayout(formLayout);
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layout->addWidget(buttonBox);
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setLayout(layout);
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itemId = id;
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displayedImage = imageFileEditor->currentText();
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setWindowFlags(Qt::Window);
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enableButtons(false);
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setWindowTitle(itemText->text());
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}
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//! [4]
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//! [5]
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int InformationWindow::id()
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{
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return itemId;
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}
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//! [5]
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//! [6]
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void InformationWindow::revert()
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{
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mapper->revert();
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enableButtons(false);
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}
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//! [6]
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//! [7]
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void InformationWindow::submit()
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{
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QString newImage(imageFileEditor->currentText());
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if (displayedImage != newImage) {
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displayedImage = newImage;
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emit imageChanged(itemId, newImage);
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}
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mapper->submit();
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mapper->setCurrentIndex(itemId);
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enableButtons(false);
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}
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//! [7]
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//! [8]
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void InformationWindow::createButtons()
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{
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closeButton = new QPushButton(tr("&Close"));
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revertButton = new QPushButton(tr("&Revert"));
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submitButton = new QPushButton(tr("&Submit"));
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closeButton->setDefault(true);
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connect(closeButton, SIGNAL(clicked()), this, SLOT(close()));
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connect(revertButton, SIGNAL(clicked()), this, SLOT(revert()));
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connect(submitButton, SIGNAL(clicked()), this, SLOT(submit()));
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//! [8]
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//! [9]
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buttonBox = new QDialogButtonBox(this);
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buttonBox->addButton(submitButton, QDialogButtonBox::AcceptRole);
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buttonBox->addButton(revertButton, QDialogButtonBox::ResetRole);
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buttonBox->addButton(closeButton, QDialogButtonBox::RejectRole);
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}
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//! [9]
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//! [10]
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void InformationWindow::enableButtons(bool enable)
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{
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revertButton->setEnabled(enable);
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submitButton->setEnabled(enable);
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}
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//! [10]
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