qsgsimplerectnode.cpp

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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only
 
#include "qsgsimplerectnode.h"
#include "qsgflatcolormaterial.h"
 
QT_BEGIN_NAMESPACE
 
/*!
  \class QSGSimpleRectNode
 
  \brief The QSGSimpleRectNode class is a convenience class for drawing
  solid filled rectangles using scenegraph.
  \inmodule QtQuick
 
  \warning This utility class is only functional when running with the default
  or software backends of the Qt Quick scenegraph. As an alternative, prefer
  using QSGRectangleNode via QQuickWindow::createRectangleNode(). However, this
  standalone class is still useful when used via subclassing and the
  application knows that no special scenegraph backends will be involved.
 */
 
 
 
/*!
    Constructs a QSGSimpleRectNode instance which is spanning \a rect with
    the color \a color.
 */
QSGSimpleRectNode::QSGSimpleRectNode(const QRectF &rect, const QColor &color)
    : m_geometry(QSGGeometry::defaultAttributes_Point2D(), 4)
{
    Q_UNUSED(reserved);
    QSGGeometry::updateRectGeometry(&m_geometry, rect);
    m_material.setColor(color);
    setMaterial(&m_material);
    setGeometry(&m_geometry);
}
 
 
 
/*!
    Constructs a QSGSimpleRectNode instance with an empty rectangle and
    white color.
 */
QSGSimpleRectNode::QSGSimpleRectNode()
    : m_geometry(QSGGeometry::defaultAttributes_Point2D(), 4)
{
    QSGGeometry::updateRectGeometry(&m_geometry, QRectF());
    setMaterial(&m_material);
    setGeometry(&m_geometry);
}
 
 
 
/*!
    Sets the rectangle of this rect node to \a rect.
 */
void QSGSimpleRectNode::setRect(const QRectF &rect)
{
    QSGGeometry::updateRectGeometry(&m_geometry, rect);
    markDirty(QSGNode::DirtyGeometry);
}
 
 
/*!
    \fn void QSGSimpleRectNode::setRect(qreal x, qreal y, qreal w, qreal h)
    \overload
 
    Sets the rectangle of this rect node to begin at (\a x, \a y) and have
    width \a w and height \a h.
 */
 
/*!
    Returns the rectangle that this rect node covers.
 */
QRectF QSGSimpleRectNode::rect() const
{
    const QSGGeometry::Point2D *pts = m_geometry.vertexDataAsPoint2D();
    return QRectF(pts[0].x,
                  pts[0].y,
                  pts[3].x - pts[0].x,
                  pts[3].y - pts[0].y);
}
 
 
/*!
    Sets the color of this rectangle to \a color. The default
    color will be white.
 */
void QSGSimpleRectNode::setColor(const QColor &color)
{
    if (color != m_material.color()) {
        m_material.setColor(color);
        markDirty(QSGNode::DirtyMaterial);
    }
}
 
 
 
/*!
    Returns the color of this rectangle.
 */
QColor QSGSimpleRectNode::color() const
{
    return m_material.color();
}
 
QT_END_NAMESPACE