Method update

YUViewLib/src/ui/views/SplitViewWidget.cpp:1505–1583

}

void splitViewWidget::update(bool newFrame, bool itemRedraw)
{
  if (!this->isMasterView && !isVisible())
    // This is the separate view and it is not enabled. Nothing to update.
    return;

  bool playing = (playback) ? playback->playing() : false;
  DEBUG_LOAD_DRAW("splitViewWidget::update" << (!this->isMasterView ? " separate" : "")
                                            << (newFrame ? " newFrame" : "")
                                            << (playing ? " playing" : ""));

  if (newFrame || itemRedraw)
  {
    // A new frame was selected (by the user directly or by playback).
    // That does not necessarily mean a paint event. First check if one of the items needs to load
    // first.
    auto item           = playlist->getSelectedItems();
    int  frameIdx       = playback->getCurrentFrame();
    bool loadRawData    = showRawData() && !playing;
    bool itemLoading[2] = {false, false};
    if (item[0])
    {
      auto state = item[0]->needsLoading(frameIdx, loadRawData);
      if (state == ItemLoadingState::LoadingNeeded)
      {
        // The frame needs to be loaded first.
        if (this->isMasterView)
          cache->loadFrame(item[0], frameIdx, 0);
        itemLoading[0] = true;
      }
      else if (playing && state == ItemLoadingState::LoadingNeededDoubleBuffer)
      {
        // We can immediately draw the new frame but then we need to update the double buffer
        if (this->isMasterView)
        {
          item[0]->activateDoubleBuffer();
          cache->loadFrame(item[0], frameIdx, 0);
        }
      }
    }
    if (isSplitting() && item[1])
    {
      auto state = item[1]->needsLoading(frameIdx, loadRawData);
      if (state == ItemLoadingState::LoadingNeeded)
      {
        // The frame needs to be loaded first.
        if (this->isMasterView)
          cache->loadFrame(item[1], frameIdx, 1);
        itemLoading[1] = true;
      }
      else if (playing && state == ItemLoadingState::LoadingNeededDoubleBuffer)
      {
        // We can immediately draw the new frame but then we need to update the double buffer
        if (this->isMasterView)
        {
          item[1]->activateDoubleBuffer();
          cache->loadFrame(item[1], frameIdx, 1);
        }