- Qt 5.5
- Qt Quick
- Scene Graph - Painted Item
- textballoon.cpp Example File
- Qt 5.5.1 Reference Documentation

# textballoon.cpp Example File

customitems/painteditem/textballoon.cpp

    /****************************************************************************
    **
    ** Copyright (C) 2015 The Qt Company Ltd.
    ** Contact: http://www.qt.io/licensing/
    **
    ** This file is part of the demonstration applications of the Qt Toolkit.
    **
    ** $QT_BEGIN_LICENSE:LGPL21$
    ** Commercial License Usage
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    ** GNU Lesser General Public License Usage
    ** Alternatively, this file may be used under the terms of the GNU Lesser
    ** General Public License version 2.1 or version 3 as published by the Free
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    ** LICENSE.LGPLv3 included in the packaging of this file. Please review the
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    #include "textballoon.h"

    TextBalloon::TextBalloon(QQuickItem *parent)
        : QQuickPaintedItem(parent)
        , rightAligned(false)
    {
    }

    void TextBalloon::paint(QPainter *painter)
    {
        QBrush brush(QColor("#007430"));

        painter->setBrush(brush);
        painter->setPen(Qt::NoPen);
        painter->setRenderHint(QPainter::Antialiasing);

        painter->drawRoundedRect(0, 0, boundingRect().width(), boundingRect().height() - 10, 10, 10);

        if (rightAligned)
        {
            const QPointF points[3] = {
                QPointF(boundingRect().width() - 10.0, boundingRect().height() - 10.0),
                QPointF(boundingRect().width() - 20.0, boundingRect().height()),
                QPointF(boundingRect().width() - 30.0, boundingRect().height() - 10.0),
            };
            painter->drawConvexPolygon(points, 3);
        }
        else
        {
            const QPointF points[3] = {
                QPointF(10.0, boundingRect().height() - 10.0),
                QPointF(20.0, boundingRect().height()),
                QPointF(30.0, boundingRect().height() - 10.0),
            };
            painter->drawConvexPolygon(points, 3);
        }
    }

    bool TextBalloon::isRightAligned()
    {
        return this->rightAligned;
    }

    void TextBalloon::setRightAligned(bool rightAligned)
    {
        this->rightAligned = rightAligned;
    }