void CameraBinFocus::_q_handleCameraStatusChange(QCamera::Status status)
{
m_cameraStatus = status;
if (status == QCamera::ActiveStatus) {
if (GstPad *pad = gst_element_get_static_pad(m_session->cameraSource(), "vfsrc")) {
if (GstCaps *caps = qt_gst_pad_get_current_caps(pad)) {
if (GstStructure *structure = gst_caps_get_structure(caps, 0)) {
int width = 0;
int height = 0;
gst_structure_get_int(structure, "width", &width);
gst_structure_get_int(structure, "height", &height);
setViewfinderResolution(QSize(width, height));
}
gst_caps_unref(caps);
}
gst_object_unref(GST_OBJECT(pad));
}
if (m_focusPointMode == QCameraFocus::FocusPointCustom) {
updateRegionOfInterest(m_focusRect);
}
} else {
_q_setFocusStatus(QCamera::Unlocked, QCamera::LockLost);
resetFocusPoint();
}
}
void CameraBinFocus::updateRegionOfInterest(const QRectF &rectangle)
{
updateRegionOfInterest(QVector<QRect>() << QRect(
rectangle.x() * m_viewfinderResolution.width(),
rectangle.y() * m_viewfinderResolution.height(),
rectangle.width() * m_viewfinderResolution.width(),
rectangle.height() * m_viewfinderResolution.height()));
}
void CameraBinFocus::_q_handleCameraStateChange(QCamera::State state)
{
m_cameraState = state;
if (state != QCamera::ActiveState) {
_q_setFocusStatus(QCamera::Unlocked, QCamera::LockLost);
resetFocusPoint();
} else if (m_focusPointMode == QCameraFocus::FocusPointCustom) {
updateRegionOfInterest(m_focusRect, 1);
}
}
void CameraBinFocus::resetFocusPoint()
{
const QRectF focusRect = m_focusRect;
m_focusPoint = QPointF(0.5, 0.5);
m_focusRect.moveCenter(m_focusPoint);
updateRegionOfInterest(QVector<QRect>());
if (focusRect != m_focusRect) {
emit customFocusPointChanged(m_focusPoint);
emit focusZonesChanged();
}
}
void CameraBinFocus::setCustomFocusPoint(const QPointF &point)
{
if (m_focusPoint != point) {
m_focusPoint = point;
// Bound the focus point so the focus rect remains entirely within the unit square.
m_focusPoint.setX(qBound(m_focusRect.width() / 2, m_focusPoint.x(), 1 - m_focusRect.width() / 2));
m_focusPoint.setY(qBound(m_focusRect.height() / 2, m_focusPoint.y(), 1 - m_focusRect.height() / 2));
if (m_focusPointMode == QCameraFocus::FocusPointCustom) {
const QRectF focusRect = m_focusRect;
m_focusRect.moveCenter(m_focusPoint);
updateRegionOfInterest(m_focusRect);
if (focusRect != m_focusRect) {
emit focusZonesChanged();
}
}
emit customFocusPointChanged(m_focusPoint);
}
}
