////  TextOverlay.cpp//  interface/src/ui/overlays////  Copyright 2014 High Fidelity, Inc.////  Distributed under the Apache License, Version 2.0.//  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html// #include "TextOverlay.h" #include <QQuickItem>#include <QFontMetrics> #include "FontFamilies.h" QString const TextOverlay::TYPE = "text";QUrl const TextOverlay::URL(QString("hifi/overlays/TextOverlay.qml")); TextOverlay::TextOverlay() : QmlOverlay(URL) { } TextOverlay::TextOverlay(const TextOverlay* textOverlay)    : QmlOverlay(URL, textOverlay) {} TextOverlay* TextOverlay::createClone() const {    return new TextOverlay(this);} QSizeF TextOverlay::textSize(const QString& text) const {    int lines = 1;    foreach(QChar c, text) {        if (c == QChar('\n')) {            ++lines;        }    }    QFont font(ROBOTO_FONT_FAMILY);    font.setPixelSize(18);    QFontMetrics fm(font);    QSizeF result = QSizeF(fm.horizontalAdvance(text), 18 * lines);    return result;}