Qt 5.6 | Qt OpenGL | Textures Example | window.cpp Example File

Qt 5.6.3 Reference Documentation

# window.cpp Example File

textures/window.cpp

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      #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);
      }