Method selectGroup

src/ImageViewer.cpp:1928–1962

}

void ImageViewer::selectGroup(string_view group) {
    // If the group does not exist, select the first group.
    const auto id = groupId(group).value_or(0);

    auto& buttons = mGroupButtonContainer->children();
    for (size_t i = 0; i < buttons.size(); ++i) {
        dynamic_cast<ImageButton*>(buttons[i])->setIsSelected(i == id);
    }

    mCurrentGroup = groupName(id);
    mImageCanvas->setRequestedChannelGroup(mCurrentGroup);

    // Ensure the currently active group button is always fully on-screen
    Widget* activeGroupButton = nullptr;
    for (Widget* widget : mGroupButtonContainer->children()) {
        if (dynamic_cast<ImageButton*>(widget)->isSelected()) {
            activeGroupButton = widget;
            break;
        }
    }

    // Ensure the currently active group button is always fully on-screen
    if (activeGroupButton) {
        mGroupButtonContainer->set_position(
            Vector2i{
                clamp(
                    mGroupButtonContainer->position().x(),
                    -activeGroupButton->position().x(),
                    m_size.x() - activeGroupButton->position().x() - activeGroupButton->width()
                ),
                0
            }
        );
    }
}

void ImageViewer::selectReference(const shared_ptr<Image>& image) {
    if (!image) {