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++ // Copyright (C) 2016 The Qt Company Ltd.
++ // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
++
++ #include <QtWidgets>
++
++ #include "glwidget.h"
++ #include "window.h"
++
++ Window::Window()
++ {
++ QGridLayout *mainLayout = new QGridLayout;
++
++ for (int i = 0; i < NumRows; ++i) {
++ for (int j = 0; j < NumColumns; ++j) {
++ QColor clearColor;
++ clearColor.setHsv(((i * NumColumns) + j) * 255
++ / (NumRows * NumColumns - 1),
++ 255, 63);
++
++ glWidgets[i][j] = new GLWidget;
++ glWidgets[i][j]->setClearColor(clearColor);
++ glWidgets[i][j]->rotateBy(+42 * 16, +42 * 16, -21 * 16);
++ mainLayout->addWidget(glWidgets[i][j], i, j);
++
++ connect(glWidgets[i][j], &GLWidget::clicked,
++ this, &Window::setCurrentGlWidget);
++ }
++ }
++ setLayout(mainLayout);
++
++ currentGlWidget = glWidgets[0][0];
++
++ QTimer *timer = new QTimer(this);
++ connect(timer, &QTimer::timeout, this, &Window::rotateOneStep);
++ timer->start(20);
++
++ setWindowTitle(tr("Textures"));
++ }
++
++ void Window::setCurrentGlWidget()
++ {
++ currentGlWidget = qobject_cast<GLWidget *>(sender());
++ }
++
++ void Window::rotateOneStep()
++ {
++ if (currentGlWidget)
++ currentGlWidget->rotateBy(+2 * 16, +2 * 16, -1 * 16);
++ }