QCameraFocusZoneList BbCameraFocusControl::focusZones() const
{
if (m_session->state() == QCamera::UnloadedState)
return QCameraFocusZoneList();
camera_region_t regions[20];
int supported = 0;
int asked = 0;
camera_error_t result = camera_get_focus_regions(m_session->handle(), 20, &supported, &asked, regions);
if (result != CAMERA_EOK) {
qWarning() << "Unable to retrieve focus regions:" << result;
return QCameraFocusZoneList();
}
// retrieve width and height of viewfinder
int viewfinderWidth = 0;
int viewfinderHeight = 0;
if (m_session->captureMode() & QCamera::CaptureStillImage)
result = camera_get_photovf_property(m_session->handle(),
CAMERA_IMGPROP_WIDTH, &viewfinderWidth,
CAMERA_IMGPROP_HEIGHT, &viewfinderHeight);
else if (m_session->captureMode() & QCamera::CaptureVideo)
result = camera_get_videovf_property(m_session->handle(),
CAMERA_IMGPROP_WIDTH, &viewfinderWidth,
CAMERA_IMGPROP_HEIGHT, &viewfinderHeight);
if (result != CAMERA_EOK) {
qWarning() << "Unable to retrieve viewfinder size:" << result;
return QCameraFocusZoneList();
}
QCameraFocusZoneList list;
for (int i = 0; i < asked; ++i) {
const int x = regions[i].left;
const int y = regions[i].top;
const int width = regions[i].width;
const int height = regions[i].height;
QRectF rect(static_cast<float>(x)/static_cast<float>(viewfinderWidth),
static_cast<float>(y)/static_cast<float>(viewfinderHeight),
static_cast<float>(width)/static_cast<float>(viewfinderWidth),
static_cast<float>(height)/static_cast<float>(viewfinderHeight));
list << QCameraFocusZone(rect, QCameraFocusZone::Focused); //TODO: how to know if a zone is unused/selected/focused?!?
}
return list;
}
/*!
\property QCameraFocus::focusZones
Returns the list of active focus zones.
If QCamera::FocusPointAuto or QCamera::FocusPointFaceDetection focus mode is selected
this method returns the list of zones the camera is actually focused on.
The coordinates system is the same as for custom focus points:
QPointF(0,0) points to the left top frame point, QPointF(0.5,0.5) points to the frame center.
*/
QCameraFocusZoneList QCameraFocus::focusZones() const
{
return d_func()->focusControl ?
d_func()->focusControl->focusZones() :
QCameraFocusZoneList();
}
QCameraFocusZoneList CameraBinFocus::focusZones() const
{
return QCameraFocusZoneList() << QCameraFocusZone(QRectF(0.35, 0.35, 0.3, 0.3), m_focusZoneStatus);
}
QCameraFocusZoneList CameraBinFocus::focusZones() const
{
return QCameraFocusZoneList() << QCameraFocusZone(m_focusRect, m_focusZoneStatus);
}
