window.cpp 范例文件

painting/concentriccircles/window.cpp
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#include "circlewidget.h" #include "window.h" #include <QtWidgets> Window::Window() { aliasedLabel = createLabel(tr("Aliased")); antialiasedLabel = createLabel(tr("Antialiased")); intLabel = createLabel(tr("Int")); floatLabel = createLabel(tr("Float")); QGridLayout *layout = new QGridLayout; layout->addWidget(aliasedLabel, 0, 1); layout->addWidget(antialiasedLabel, 0, 2); layout->addWidget(intLabel, 1, 0); layout->addWidget(floatLabel, 2, 0); QTimer *timer = new QTimer(this); for (int i = 0; i < 2; ++i) { for (int j = 0; j < 2; ++j) { circleWidgets[i][j] = new CircleWidget; circleWidgets[i][j]->setAntialiased(j != 0); circleWidgets[i][j]->setFloatBased(i != 0); connect(timer, SIGNAL(timeout()), circleWidgets[i][j], SLOT(nextAnimationFrame())); layout->addWidget(circleWidgets[i][j], i + 1, j + 1); } } timer->start(100); setLayout(layout); setWindowTitle(tr("Concentric Circles")); } QLabel *Window::createLabel(const QString &text) { QLabel *label = new QLabel(text); label->setAlignment(Qt::AlignCenter); label->setMargin(2); label->setFrameStyle(QFrame::Box | QFrame::Sunken); return label; }