qt.zip_qt校准

int main(int argc, char **argv) { QApplication app(argc, argv, QApplication::GuiServer); if (!QWSServer::mouseHandler()) qFatal("No mouse handler installed"); { QMessageBox message; message.setText("<p>Please press once at each of the marks " "shown in the next screen.</p>" "<p>This messagebox will timout after 10 seconds " "if you are unable to close it.</p>"); QTimer::singleShot(10 * 1000, &message, SLOT(accept())); message.exec(); } Calibration cal; cal.exec(); { QMessageBox message; message.setText("<p>The next screen will let you test the calibration " "by drawing into a widget.</p><p>This program will " "automatically close after 20 seconds.<p>"); QTimer::singleShot(10 * 1000, &message, SLOT(accept())); message.exec(); } ScribbleWidget scribble; scribble.showMaximized(); scribble.show(); app.setActiveWindow(&scribble); QTimer::singleShot(20 * 1000, &app, SLOT(quit())); return app.exec(); } class Calibration : public QDialog { public: Calibration(); ~Calibration(); int exec(); protected: void paintEvent(QPaintEvent*); void mouseReleaseEvent(QMouseEvent*); void accept(); private: QWSPointerCalibrationData data; int pressCount; }; Calibration::Calibration() { QRect desktop = QApplication::desktop()->geometry(); desktop.moveTo(QPoint(0, 0)); setGeometry(desktop); setFocusPolicy(Qt::StrongFocus); setFocus(); setModal(true); int width = qt_screen->deviceWidth(); int height = qt_screen->deviceHeight(); int dx = width / 10; int dy = height / 10; QPoint *points = data.screenPoints; points[QWSPointerCalibrationData::TopLeft] = QPoint(dx, dy); points[QWSPointerCalibrationData::BottomLeft] = QPoint(dx, height - dy); points[QWSPointerCalibrationData::BottomRight] = QPoint(width - dx, height - dy); points[QWSPointerCalibrationData::TopRight] = QPoint(width - dx, dy); points[QWSPointerCalibrationData::Center] = QPoint(width / 2, height / 2); pressCount = 0; } Calibration::~Calibration() { } int Calibration::exec() { QWSServer::mouseHandler()->clearCalibration(); grabMouse(); activateWindow(); int ret = QDialog::exec(); releaseMouse(); return ret; } void Calibration::paintEvent(QPaintEvent*) { QPainter p(this); p.fillRect(rect(), Qt::white); QPoint point = data.screenPoints[pressCount]; QSize screenSize(qt_screen->deviceWidth(), qt_screen->deviceHeight()); point = qt_screen->mapFromDevice(point, screenSize); p.fillRect(point.x() - 6, point.y() - 1, 13, 3, Qt::black); p.fillRect(point.x() - 1, point.y() - 6, 3, 13, Qt::black); } void Calibration::mouseReleaseEvent(QMouseEvent *event) { QSize screenSize(qt_screen->width(), qt_screen->height()); QPoint p = qt_screen->mapToDevice(event->pos(), screenSize); data.devPoints[pressCount] = p; if (++pressCount < 5) repaint(); else accept(); } void Calibration::accept() { Q_ASSERT(pressCount == 5); QWSServer::mouseHandler()->calibrate(&data); QDialog::accept(); }