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50
51#include <QtWidgets>
52
53#include "glwidget.h"
54#include "window.h"
55
56Window::Window()
57{
58 QGridLayout *mainLayout = new QGridLayout;
59
60 for (int i = 0; i < NumRows; ++i) {
61 for (int j = 0; j < NumColumns; ++j) {
62 QColor clearColor;
63 clearColor.setHsv(h: ((i * NumColumns) + j) * 255
64 / (NumRows * NumColumns - 1),
65 s: 255, v: 63);
66
67 glWidgets[i][j] = new GLWidget;
68 glWidgets[i][j]->setClearColor(clearColor);
69 glWidgets[i][j]->rotateBy(xAngle: +42 * 16, yAngle: +42 * 16, zAngle: -21 * 16);
70 mainLayout->addWidget(glWidgets[i][j], row: i, column: j);
71
72 connect(sender: glWidgets[i][j], signal: &GLWidget::clicked,
73 receiver: this, slot: &Window::setCurrentGlWidget);
74 }
75 }
76 setLayout(mainLayout);
77
78 currentGlWidget = glWidgets[0][0];
79
80 QTimer *timer = new QTimer(this);
81 connect(sender: timer, signal: &QTimer::timeout, receiver: this, slot: &Window::rotateOneStep);
82 timer->start(msec: 20);
83
84 setWindowTitle(tr(s: "Textures"));
85}
86
87void Window::setCurrentGlWidget()
88{
89 currentGlWidget = qobject_cast<GLWidget *>(object: sender());
90}
91
92void Window::rotateOneStep()
93{
94 if (currentGlWidget)
95 currentGlWidget->rotateBy(xAngle: +2 * 16, yAngle: +2 * 16, zAngle: -1 * 16);
96}
97

source code of qtbase/examples/opengl/textures/window.cpp