diff options
Diffstat (limited to 'tests/manual/examples/widgets/layouts/dynamiclayouts/dialog.cpp')
-rw-r--r-- | tests/manual/examples/widgets/layouts/dynamiclayouts/dialog.cpp | 136 |
1 files changed, 136 insertions, 0 deletions
diff --git a/tests/manual/examples/widgets/layouts/dynamiclayouts/dialog.cpp b/tests/manual/examples/widgets/layouts/dynamiclayouts/dialog.cpp new file mode 100644 index 0000000000..28b4fc2f7f --- /dev/null +++ b/tests/manual/examples/widgets/layouts/dynamiclayouts/dialog.cpp @@ -0,0 +1,136 @@ +// Copyright (C) 2016 The Qt Company Ltd. +// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause + +#include <QtWidgets> + +#include "dialog.h" + +Dialog::Dialog(QWidget *parent) + : QDialog(parent) +{ + createRotatableGroupBox(); + createOptionsGroupBox(); + createButtonBox(); + + mainLayout = new QGridLayout; + mainLayout->addWidget(rotatableGroupBox, 0, 0); + mainLayout->addWidget(optionsGroupBox, 1, 0); + mainLayout->addWidget(buttonBox, 2, 0); + setLayout(mainLayout); + + mainLayout->setSizeConstraint(QLayout::SetMinimumSize); + + setWindowTitle(tr("Dynamic Layouts")); +} + +void Dialog::buttonsOrientationChanged(int index) +{ + mainLayout->setSizeConstraint(QLayout::SetNoConstraint); + setMinimumSize(0, 0); + + Qt::Orientation orientation = Qt::Orientation( + buttonsOrientationComboBox->itemData(index).toInt()); + + if (orientation == buttonBox->orientation()) + return; + + mainLayout->removeWidget(buttonBox); + + int spacing = mainLayout->spacing(); + + QSize oldSizeHint = buttonBox->sizeHint() + QSize(spacing, spacing); + buttonBox->setOrientation(orientation); + QSize newSizeHint = buttonBox->sizeHint() + QSize(spacing, spacing); + + if (orientation == Qt::Horizontal) { + mainLayout->addWidget(buttonBox, 2, 0); + resize(size() + QSize(-oldSizeHint.width(), newSizeHint.height())); + } else { + mainLayout->addWidget(buttonBox, 0, 3, 2, 1); + resize(size() + QSize(newSizeHint.width(), -oldSizeHint.height())); + } + + mainLayout->setSizeConstraint(QLayout::SetDefaultConstraint); +} + +void Dialog::rotateWidgets() +{ + Q_ASSERT(rotatableWidgets.count() % 2 == 0); + + for (QWidget *widget : std::as_const(rotatableWidgets)) + rotatableLayout->removeWidget(widget); + + rotatableWidgets.enqueue(rotatableWidgets.dequeue()); + + const int n = rotatableWidgets.count(); + for (int i = 0; i < n / 2; ++i) { + rotatableLayout->addWidget(rotatableWidgets[n - i - 1], 0, i); + rotatableLayout->addWidget(rotatableWidgets[i], 1, i); + } +} + +void Dialog::help() +{ + QMessageBox::information(this, tr("Dynamic Layouts Help"), + tr("This example shows how to change layouts " + "dynamically.")); +} + +void Dialog::createRotatableGroupBox() +{ + rotatableGroupBox = new QGroupBox(tr("Rotatable Widgets")); + + rotatableWidgets.enqueue(new QSpinBox); + rotatableWidgets.enqueue(new QSlider); + rotatableWidgets.enqueue(new QDial); + rotatableWidgets.enqueue(new QProgressBar); + + int n = rotatableWidgets.count(); + for (int i = 0; i < n; ++i) { + connect(rotatableWidgets[i], SIGNAL(valueChanged(int)), + rotatableWidgets[(i + 1) % n], SLOT(setValue(int))); + } + + rotatableLayout = new QGridLayout; + rotatableGroupBox->setLayout(rotatableLayout); + + rotateWidgets(); +} + +void Dialog::createOptionsGroupBox() +{ + optionsGroupBox = new QGroupBox(tr("Options")); + + buttonsOrientationLabel = new QLabel(tr("Orientation of buttons:")); + + buttonsOrientationComboBox = new QComboBox; + buttonsOrientationComboBox->addItem(tr("Horizontal"), Qt::Horizontal); + buttonsOrientationComboBox->addItem(tr("Vertical"), Qt::Vertical); + + connect(buttonsOrientationComboBox, + &QComboBox::currentIndexChanged, + this, + &Dialog::buttonsOrientationChanged); + + optionsLayout = new QGridLayout; + optionsLayout->addWidget(buttonsOrientationLabel, 0, 0); + optionsLayout->addWidget(buttonsOrientationComboBox, 0, 1); + optionsLayout->setColumnStretch(2, 1); + optionsGroupBox->setLayout(optionsLayout); +} + +void Dialog::createButtonBox() +{ + buttonBox = new QDialogButtonBox; + + closeButton = buttonBox->addButton(QDialogButtonBox::Close); + helpButton = buttonBox->addButton(QDialogButtonBox::Help); + rotateWidgetsButton = buttonBox->addButton(tr("Rotate &Widgets"), + QDialogButtonBox::ActionRole); + + connect(rotateWidgetsButton, &QPushButton::clicked, this, &Dialog::rotateWidgets); + connect(closeButton, &QPushButton::clicked, this, &Dialog::close); + connect(helpButton, &QPushButton::clicked, this, &Dialog::help); +} + + |