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#include "qsgsimpletexturenode.h"

QT_BEGIN_NAMESPACE

static void qsgsimpletexturenode_update(QSGGeometry *g,
                                        QSGTexture *texture,
                                        const QRectF &rect)
{
    if (!texture)
        return;

    QSize ts = texture->textureSize();
    QRectF sourceRect(0, 0, ts.width(), ts.height());
    QSGGeometry::updateTexturedRectGeometry(g, rect, texture->convertToNormalizedSourceRect(sourceRect));
}

/*!
  \class QSGSimpleTextureNode
  \brief The QSGSimpleTextureNode class is provided for convenience to easily draw
  textured content using the QML scene graph.

  \inmodule QtQuick

  \warning The simple texture node class must have a texture before being
  added to the scene graph to be rendered.
*/

/*!
    Constructs a new simple texture node
 */
QSGSimpleTextureNode::QSGSimpleTextureNode()
    : m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4)
{
    setGeometry(&m_geometry);
    setMaterial(&m_material);
    setOpaqueMaterial(&m_opaque_material);
}

/*!
    Sets the filtering to be used for this texture node to \a filtering.

    For smooth scaling, use QSGTexture::Linear; for normal scaling, use
    QSGTexture::Nearest.
 */
void QSGSimpleTextureNode::setFiltering(QSGTexture::Filtering filtering)
{
    if (m_material.filtering() == filtering)
        return;

    m_material.setFiltering(filtering);
    m_opaque_material.setFiltering(filtering);
    markDirty(DirtyMaterial);
}


/*!
    Returns the filtering currently set on this texture node
 */
QSGTexture::Filtering QSGSimpleTextureNode::filtering() const
{
    return m_material.filtering();
}


/*!
    Sets the target rect of this texture node to \a r
 */
void QSGSimpleTextureNode::setRect(const QRectF &r)
{
    if (m_rect == r)
        return;
    m_rect = r;
    qsgsimpletexturenode_update(&m_geometry, texture(), m_rect);
    markDirty(DirtyGeometry);
}


/*!
    Returns the target rect of this texture node.
 */
QRectF QSGSimpleTextureNode::rect() const
{
    return m_rect;
}

/*!
    Sets the texture of this texture node to \a texture.

    \warning A texture node must have a texture before being added
    to the scenegraph to be rendered.
 */
void QSGSimpleTextureNode::setTexture(QSGTexture *texture)
{
    if (m_material.texture() == texture)
        return;
    m_material.setTexture(texture);
    m_opaque_material.setTexture(texture);
    qsgsimpletexturenode_update(&m_geometry, texture, m_rect);
    markDirty(DirtyMaterial);
}



/*!
    Returns the texture for this texture node
 */
QSGTexture *QSGSimpleTextureNode::texture() const
{
    return m_material.texture();
}

QT_END_NAMESPACE