void plot_canvas::ensure_canvas_size(int ww, int hh)
{
if (! m_img)
{
prepare_image_buffer (ww, hh);
}
else if (m_img->getWidth() != ww || m_img->getHeight() != hh)
{
prepare_image_buffer (ww, hh);
}
}
//start button handler
void MainWindow::on_start_clicked()
{
switch(tracker_state)
{
case STATE_NOT_STARTED:
//start the tracker...
tracker_state = STATE_STARTED_TRACKING;
update_gui();
video_loader.reset();
//if (config->detect_elevator_events) prepare_elevator_detector();
if (config->record_activity) prepare_image_buffer();
start_tracking();
break;
case STATE_STARTED_TRACKING:
//pause the tracker...
update_trace_list();
//Update the target table
update_target_list();
//Update the elevator list table
update_event_list();
tracker_state = STATE_STOPPED_TRACKING;
update_gui();
break;
case STATE_STOPPED_TRACKING:
//resume the tracker...
//Update the trace table
update_trace_list();
//Update the target table
update_target_list();
//Update the elevator list table
update_event_list();
tracker_state = STATE_STARTED_TRACKING;
update_gui();
start_tracking();
break;
}
}