void LightboxWidget::scrolled(int v)
{
TRACKER("LightboxWidget::scrolled");
std::for_each(m_slices->begin(), m_slices->end(), SliceHider(m_sv->viewport()->geometry()));
if(!m_sv->verticalScrollBar()->draggingSlider())repaintSlices();
}
void LightboxWidget::layoutSlices() const
{
TRACKER("LightboxWidget::layoutSlices");
SlicePlacer sp = std::for_each(m_slices->begin(), m_slices->end(), SlicePlacer(m_sv, 6, m_zoom));
m_sv->resizeContents(sp.width(), sp.height());
std::for_each(m_slices->begin(), m_slices->end(), SliceHider(m_sv->viewport()->geometry()));
}
LightboxWidget::LightboxWidget(QWidget *parent,ImageGroup::Handle i,OverlayList::Handle ol, Cursor::Handle& c ) :
ImageWidget(parent,i,ol,c), m_image(i), m_zoom(1.0)
{
TRACKER("LightboxWidget::LightboxWidget");
m_sv = new QScrollView(this);
setIcon( QPixmap(lightbox_xpm) );
setCentralWidget(m_sv);
m_sv->viewport()->setBackgroundColor(QColor(128, 128, 128));
connect(m_sv->verticalScrollBar(), SIGNAL(valueChanged(int)), this, SLOT(scrolled(int)));
connect(m_sv->verticalScrollBar(), SIGNAL(sliderReleased()), this, SLOT(repaintSlices()));
connect(m_mainToolbarWidget, SIGNAL(zoomValueChanged(int)), this, SLOT(setZoom(int)));
m_slices = SliceListHandle(new SliceList);
for(int n = 0; n < m_image->inqZ(); ++n)
{
SliceWidget::Handle axial =
SliceWidget::Handle(new AxialWidget(m_sv->viewport(), "axial",
m_cursor, m_overlayList, m_drawSettings, m_undoList,
m_opts));
m_sv->addChild(axial.get());
m_slices->push_back(axial);
connect(this, SIGNAL(crossHairModeChanged(bool)), axial.get(), SLOT(crossHairMode(bool)));
connect(this, SIGNAL(modeChanged(SliceWidget::Mode)), axial.get(), SLOT(setMode(SliceWidget::Mode)));
connect(this, SIGNAL(crossHairModeChanged(bool)), axial.get(), SLOT(crossHairMode(bool)));
connect(this, SIGNAL(resetZoom()), axial.get(), SLOT(resetZoom()));
connect(axial.get(), SIGNAL(message(const QString&, int )), SIGNAL(message(const QString&, int )));
// m_mainToolbarWidget->setCursorMode();
axial->setSlice(n,m_cursor->inqV());
axial->setSliceIsFixed(true);
}
m_mainToolbarWidget->setCrossHairsMode(true);
}
/* find the most plausible velocity. That is, the most distant
* (in time) tracker which isn't too old, the movement vector was
* in the same octant, and where the velocity is within an
* acceptable range to the inital velocity.
*
* @return The tracker's velocity or 0 if the above conditions are unmet
*/
static double
QueryTrackers(DeviceVelocityPtr vel, int cur_t)
{
int offset, dir = UNDEFINED, used_offset = -1, age_ms;
/* initial velocity: a low-offset, valid velocity */
double initial_velocity = 0, result = 0, velocity_diff;
double velocity_factor = vel->corr_mul * vel->const_acceleration; /* premultiply */
/* loop from current to older data */
for (offset = 1; offset < vel->num_tracker; offset++) {
MotionTracker *tracker = TRACKER(vel, offset);
double tracker_velocity;
age_ms = cur_t - tracker->time;
/* bail out if data is too old and protect from overrun */
if (age_ms >= vel->reset_time || age_ms < 0) {
DebugAccelF("query: tracker too old (reset after %d, age is %d)\n",
vel->reset_time, age_ms);
break;
}
/*
* this heuristic avoids using the linear-motion velocity formula
* in CalcTracker() on motion that isn't exactly linear. So to get
* even more precision we could subdivide as a final step, so possible
* non-linearities are accounted for.
*/
dir &= tracker->dir;
if (dir == 0) { /* we've changed octant of movement (e.g. NE → NW) */
DebugAccelF("query: no longer linear\n");
/* instead of breaking it we might also inspect the partition after,
* but actual improvement with this is probably rare. */
break;
}
tracker_velocity = CalcTracker(tracker, cur_t) * velocity_factor;
if ((initial_velocity == 0 || offset <= vel->initial_range) &&
tracker_velocity != 0) {
/* set initial velocity and result */
result = initial_velocity = tracker_velocity;
used_offset = offset;
}
else if (initial_velocity != 0 && tracker_velocity != 0) {
velocity_diff = fabs(initial_velocity - tracker_velocity);
if (velocity_diff > vel->max_diff &&
velocity_diff / (initial_velocity + tracker_velocity) >=
vel->max_rel_diff) {
/* we're not in range, quit - it won't get better. */
DebugAccelF("query: tracker too different:"
" old %2.2f initial %2.2f diff: %2.2f\n",
tracker_velocity, initial_velocity, velocity_diff);
break;
}
/* we're in range with the initial velocity,
* so this result is likely better
* (it contains more information). */
result = tracker_velocity;
used_offset = offset;
}
}
if (offset == vel->num_tracker) {
DebugAccelF("query: last tracker in effect\n");
used_offset = vel->num_tracker - 1;
}
if (used_offset >= 0) {
#ifdef PTRACCEL_DEBUGGING
MotionTracker *tracker = TRACKER(vel, used_offset);
DebugAccelF("result: offset %i [dx: %f dy: %f diff: %i]\n",
used_offset, tracker->dx, tracker->dy,
cur_t - tracker->time);
#endif
}
return result;
}
LightboxWidget::~LightboxWidget()
{
TRACKER("LightboxWidget::~LightboxWidget");
}
void LightboxWidget::resizeEvent(QResizeEvent *e)
{
TRACKER("LightboxWidget::resizeEvent");
layoutSlices();
}
