mirror of
https://github.com/crystalidea/qt6windows7.git
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137 lines
4.1 KiB
C++
137 lines
4.1 KiB
C++
// Copyright (C) 2016 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
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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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createRotatableGroupBox();
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createOptionsGroupBox();
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createButtonBox();
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mainLayout = new QGridLayout;
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mainLayout->addWidget(rotatableGroupBox, 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(rotatableWidgets.count() % 2 == 0);
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for (QWidget *widget : std::as_const(rotatableWidgets))
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rotatableLayout->removeWidget(widget);
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rotatableWidgets.enqueue(rotatableWidgets.dequeue());
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const int n = rotatableWidgets.count();
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for (int i = 0; i < n / 2; ++i) {
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rotatableLayout->addWidget(rotatableWidgets[n - i - 1], 0, i);
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rotatableLayout->addWidget(rotatableWidgets[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::createRotatableGroupBox()
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{
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rotatableGroupBox = new QGroupBox(tr("Rotatable Widgets"));
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rotatableWidgets.enqueue(new QSpinBox);
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rotatableWidgets.enqueue(new QSlider);
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rotatableWidgets.enqueue(new QDial);
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rotatableWidgets.enqueue(new QProgressBar);
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int n = rotatableWidgets.count();
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for (int i = 0; i < n; ++i) {
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connect(rotatableWidgets[i], SIGNAL(valueChanged(int)),
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rotatableWidgets[(i + 1) % n], SLOT(setValue(int)));
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}
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rotatableLayout = new QGridLayout;
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rotatableGroupBox->setLayout(rotatableLayout);
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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,
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&QComboBox::currentIndexChanged,
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this,
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&Dialog::buttonsOrientationChanged);
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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, &QPushButton::clicked, this, &Dialog::rotateWidgets);
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connect(closeButton, &QPushButton::clicked, this, &Dialog::close);
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connect(helpButton, &QPushButton::clicked, this, &Dialog::help);
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}
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