Method findOrCreateChannelEnabled

Engine/Node.cpp:2145–2220

}

void
Node::findOrCreateChannelEnabled(const KnobPagePtr& mainPage)
{
    //Try to find R,G,B,A parameters on the plug-in, if found, use them, otherwise create them
    static const std::string channelLabels[4] = {kNatronOfxParamProcessRLabel, kNatronOfxParamProcessGLabel, kNatronOfxParamProcessBLabel, kNatronOfxParamProcessALabel};
    static const std::string channelNames[4] = {kNatronOfxParamProcessR, kNatronOfxParamProcessG, kNatronOfxParamProcessB, kNatronOfxParamProcessA};
    static const std::string channelHints[4] = {kNatronOfxParamProcessRHint, kNatronOfxParamProcessGHint, kNatronOfxParamProcessBHint, kNatronOfxParamProcessAHint};
    KnobBoolPtr foundEnabled[4];
    const KnobsVec & knobs = _imp->effect->getKnobs();

    for (int i = 0; i < 4; ++i) {
        KnobBoolPtr enabled;
        for (std::size_t j = 0; j < knobs.size(); ++j) {
            if (knobs[j]->getOriginalName() == channelNames[i]) {
                foundEnabled[i] = std::dynamic_pointer_cast<KnobBool>(knobs[j]);
                break;
            }
        }
    }

    bool foundAll = foundEnabled[0] && foundEnabled[1] && foundEnabled[2] && foundEnabled[3];
    bool isWriter = _imp->effect->isWriter();

    if (foundAll) {
        for (int i = 0; i < 4; ++i) {
            // Writers already have their checkboxes places correctly
            if (!isWriter) {
                if (foundEnabled[i]->getParentKnob() == mainPage) {
                    //foundEnabled[i]->setAddNewLine(i == 3);
                    mainPage->removeKnob( foundEnabled[i].get() );
                    mainPage->insertKnob(i, foundEnabled[i]);
                }
            }
            _imp->enabledChan[i] = foundEnabled[i];
        }
    }

    bool pluginDefaultPref[4];
    _imp->hostChannelSelectorEnabled = _imp->effect->isHostChannelSelectorSupported(&pluginDefaultPref[0], &pluginDefaultPref[1], &pluginDefaultPref[2], &pluginDefaultPref[3]);


    if (_imp->hostChannelSelectorEnabled) {
        if (foundAll) {
            std::cerr << getScriptName_mt_safe() << ": WARNING: property " << kNatronOfxImageEffectPropChannelSelector << " is different of " << kOfxImageComponentNone << " but uses its own checkboxes" << std::endl;
        } else {
            //Create the selectors
            for (int i = 0; i < 4; ++i) {
                foundEnabled[i] =  AppManager::createKnob<KnobBool>(_imp->effect.get(), channelLabels[i], 1, false);
                foundEnabled[i]->setName(channelNames[i]);
                foundEnabled[i]->setAnimationEnabled(false);
                foundEnabled[i]->setAddNewLine(i == 3);
                foundEnabled[i]->setDefaultValue(pluginDefaultPref[i]);
                foundEnabled[i]->setHintToolTip(channelHints[i]);
                mainPage->insertKnob(i, foundEnabled[i]);
                _imp->enabledChan[i] = foundEnabled[i];
            }
            foundAll = true;
        }