2b75c156b6
Change-Id: I6441ff931dbd33b698d762e6f6784898f3f60fe7 Reviewed-by: Oswald Buddenhagen <oswald.buddenhagen@theqtcompany.com>
170 lines
5.8 KiB
C++
170 lines
5.8 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2015 The Qt Company Ltd.
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** Contact: http://www.qt.io/licensing/
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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 The Qt Company Ltd nor the names of its
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** 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 <QtWidgets>
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#include "dialog.h"
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Dialog::Dialog(QWidget *parent)
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: QDialog(parent)
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{
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createRotableGroupBox();
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createOptionsGroupBox();
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createButtonBox();
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mainLayout = new QGridLayout;
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mainLayout->addWidget(rotableGroupBox, 0, 0);
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mainLayout->addWidget(optionsGroupBox, 1, 0);
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mainLayout->addWidget(buttonBox, 2, 0);
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setLayout(mainLayout);
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mainLayout->setSizeConstraint(QLayout::SetMinimumSize);
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setWindowTitle(tr("Dynamic Layouts"));
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}
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void Dialog::buttonsOrientationChanged(int index)
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{
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mainLayout->setSizeConstraint(QLayout::SetNoConstraint);
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setMinimumSize(0, 0);
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Qt::Orientation orientation = Qt::Orientation(
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buttonsOrientationComboBox->itemData(index).toInt());
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if (orientation == buttonBox->orientation())
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return;
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mainLayout->removeWidget(buttonBox);
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int spacing = mainLayout->spacing();
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QSize oldSizeHint = buttonBox->sizeHint() + QSize(spacing, spacing);
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buttonBox->setOrientation(orientation);
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QSize newSizeHint = buttonBox->sizeHint() + QSize(spacing, spacing);
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if (orientation == Qt::Horizontal) {
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mainLayout->addWidget(buttonBox, 2, 0);
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resize(size() + QSize(-oldSizeHint.width(), newSizeHint.height()));
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} else {
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mainLayout->addWidget(buttonBox, 0, 3, 2, 1);
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resize(size() + QSize(newSizeHint.width(), -oldSizeHint.height()));
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}
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mainLayout->setSizeConstraint(QLayout::SetDefaultConstraint);
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}
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void Dialog::rotateWidgets()
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{
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Q_ASSERT(rotableWidgets.count() % 2 == 0);
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foreach (QWidget *widget, rotableWidgets)
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rotableLayout->removeWidget(widget);
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rotableWidgets.enqueue(rotableWidgets.dequeue());
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const int n = rotableWidgets.count();
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for (int i = 0; i < n / 2; ++i) {
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rotableLayout->addWidget(rotableWidgets[n - i - 1], 0, i);
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rotableLayout->addWidget(rotableWidgets[i], 1, i);
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}
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}
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void Dialog::help()
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{
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QMessageBox::information(this, tr("Dynamic Layouts Help"),
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tr("This example shows how to change layouts "
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"dynamically."));
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}
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void Dialog::createRotableGroupBox()
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{
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rotableGroupBox = new QGroupBox(tr("Rotable Widgets"));
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rotableWidgets.enqueue(new QSpinBox);
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rotableWidgets.enqueue(new QSlider);
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rotableWidgets.enqueue(new QDial);
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rotableWidgets.enqueue(new QProgressBar);
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int n = rotableWidgets.count();
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for (int i = 0; i < n; ++i) {
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connect(rotableWidgets[i], SIGNAL(valueChanged(int)),
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rotableWidgets[(i + 1) % n], SLOT(setValue(int)));
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}
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rotableLayout = new QGridLayout;
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rotableGroupBox->setLayout(rotableLayout);
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rotateWidgets();
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}
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void Dialog::createOptionsGroupBox()
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{
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optionsGroupBox = new QGroupBox(tr("Options"));
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buttonsOrientationLabel = new QLabel(tr("Orientation of buttons:"));
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buttonsOrientationComboBox = new QComboBox;
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buttonsOrientationComboBox->addItem(tr("Horizontal"), Qt::Horizontal);
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buttonsOrientationComboBox->addItem(tr("Vertical"), Qt::Vertical);
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connect(buttonsOrientationComboBox, SIGNAL(currentIndexChanged(int)),
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this, SLOT(buttonsOrientationChanged(int)));
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optionsLayout = new QGridLayout;
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optionsLayout->addWidget(buttonsOrientationLabel, 0, 0);
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optionsLayout->addWidget(buttonsOrientationComboBox, 0, 1);
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optionsLayout->setColumnStretch(2, 1);
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optionsGroupBox->setLayout(optionsLayout);
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}
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void Dialog::createButtonBox()
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{
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buttonBox = new QDialogButtonBox;
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closeButton = buttonBox->addButton(QDialogButtonBox::Close);
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helpButton = buttonBox->addButton(QDialogButtonBox::Help);
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rotateWidgetsButton = buttonBox->addButton(tr("Rotate &Widgets"),
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QDialogButtonBox::ActionRole);
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connect(rotateWidgetsButton, SIGNAL(clicked()), this, SLOT(rotateWidgets()));
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connect(closeButton, SIGNAL(clicked()), this, SLOT(close()));
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connect(helpButton, SIGNAL(clicked()), this, SLOT(help()));
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}
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