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| |
| |
| #include "qsgsimpletexturenode.h" |
| #include <private/qsgnode_p.h> |
| |
| QT_BEGIN_NAMESPACE |
| |
| class QSGSimpleTextureNodePrivate : public QSGGeometryNodePrivate |
| { |
| public: |
| QSGSimpleTextureNodePrivate() |
| : texCoordMode(QSGSimpleTextureNode::NoTransform) |
| , isAtlasTexture(false) |
| , ownsTexture(false) |
| {} |
| |
| QRectF sourceRect; |
| QSGSimpleTextureNode::TextureCoordinatesTransformMode texCoordMode; |
| uint isAtlasTexture : 1; |
| uint ownsTexture : 1; |
| }; |
| |
| static void qsgsimpletexturenode_update(QSGGeometry *g, |
| QSGTexture *texture, |
| const QRectF &rect, |
| QRectF sourceRect, |
| QSGSimpleTextureNode::TextureCoordinatesTransformMode texCoordMode) |
| { |
| if (!texture) |
| return; |
| |
| if (!sourceRect.width() || !sourceRect.height()) { |
| QSize ts = texture->textureSize(); |
| sourceRect = QRectF(0, 0, ts.width(), ts.height()); |
| } |
| |
| // Maybe transform the texture coordinates |
| if (texCoordMode.testFlag(QSGSimpleTextureNode::MirrorHorizontally)) { |
| float tmp = sourceRect.left(); |
| sourceRect.setLeft(sourceRect.right()); |
| sourceRect.setRight(tmp); |
| } |
| if (texCoordMode.testFlag(QSGSimpleTextureNode::MirrorVertically)) { |
| float tmp = sourceRect.top(); |
| sourceRect.setTop(sourceRect.bottom()); |
| sourceRect.setBottom(tmp); |
| } |
| |
| 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. |
| |
| \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 QSGImageNode via QQuickWindow::createImageNode() or |
| QSGEngine::createImageNode(). |
| |
| \deprecated |
| */ |
| |
| /*! |
| Constructs a new simple texture node |
| */ |
| QSGSimpleTextureNode::QSGSimpleTextureNode() |
| : QSGGeometryNode(*new QSGSimpleTextureNodePrivate) |
| , m_geometry(QSGGeometry::defaultAttributes_TexturedPoint2D(), 4) |
| { |
| setGeometry(&m_geometry); |
| setMaterial(&m_material); |
| setOpaqueMaterial(&m_opaque_material); |
| m_material.setMipmapFiltering(QSGTexture::None); |
| m_opaque_material.setMipmapFiltering(QSGTexture::None); |
| #ifdef QSG_RUNTIME_DESCRIPTION |
| qsgnode_set_description(this, QLatin1String("simpletexture")); |
| #endif |
| } |
| |
| /*! |
| Destroys the texture node |
| */ |
| QSGSimpleTextureNode::~QSGSimpleTextureNode() |
| { |
| Q_D(QSGSimpleTextureNode); |
| if (d->ownsTexture) |
| delete m_material.texture(); |
| } |
| |
| /*! |
| 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; |
| Q_D(QSGSimpleTextureNode); |
| qsgsimpletexturenode_update(&m_geometry, texture(), m_rect, d->sourceRect, d->texCoordMode); |
| markDirty(DirtyGeometry); |
| } |
| |
| /*! |
| \fn void QSGSimpleTextureNode::setRect(qreal x, qreal y, qreal w, qreal h) |
| \overload |
| |
| Sets the rectangle of this texture node to begin at (\a x, \a y) and have |
| width \a w and height \a h. |
| */ |
| |
| /*! |
| Returns the target rect of this texture node. |
| */ |
| QRectF QSGSimpleTextureNode::rect() const |
| { |
| return m_rect; |
| } |
| |
| /*! |
| Sets the source rect of this texture node to \a r. |
| |
| \since 5.5 |
| */ |
| void QSGSimpleTextureNode::setSourceRect(const QRectF &r) |
| { |
| Q_D(QSGSimpleTextureNode); |
| if (d->sourceRect == r) |
| return; |
| d->sourceRect = r; |
| qsgsimpletexturenode_update(&m_geometry, texture(), m_rect, d->sourceRect, d->texCoordMode); |
| markDirty(DirtyGeometry); |
| } |
| |
| /*! |
| \fn void QSGSimpleTextureNode::setSourceRect(qreal x, qreal y, qreal w, qreal h) |
| \overload |
| \since 5.5 |
| |
| Sets the rectangle of this texture node to show its texture from (\a x, \a y) and |
| have width \a w and height \a h relatively to the QSGTexture::textureSize. |
| */ |
| |
| /*! |
| Returns the source rect of this texture node. |
| |
| \since 5.5 |
| */ |
| QRectF QSGSimpleTextureNode::sourceRect() const |
| { |
| Q_D(const QSGSimpleTextureNode); |
| return d->sourceRect; |
| } |
| |
| /*! |
| Sets the texture of this texture node to \a texture. |
| |
| Use setOwnsTexture() to set whether the node should take |
| ownership of the texture. By default, the node does not |
| take ownership. |
| |
| \warning A texture node must have a texture before being added |
| to the scenegraph to be rendered. |
| */ |
| void QSGSimpleTextureNode::setTexture(QSGTexture *texture) |
| { |
| Q_ASSERT(texture); |
| Q_D(QSGSimpleTextureNode); |
| if (d->ownsTexture) |
| delete m_material.texture(); |
| m_material.setTexture(texture); |
| m_opaque_material.setTexture(texture); |
| qsgsimpletexturenode_update(&m_geometry, texture, m_rect, d->sourceRect, d->texCoordMode); |
| |
| DirtyState dirty = DirtyMaterial; |
| // It would be tempting to skip the extra bit here and instead use |
| // m_material.texture to get the old state, but that texture could |
| // have been deleted in the mean time. |
| bool wasAtlas = d->isAtlasTexture; |
| d->isAtlasTexture = texture->isAtlasTexture(); |
| if (wasAtlas || d->isAtlasTexture) |
| dirty |= DirtyGeometry; |
| markDirty(dirty); |
| } |
| |
| |
| |
| /*! |
| Returns the texture for this texture node |
| */ |
| QSGTexture *QSGSimpleTextureNode::texture() const |
| { |
| return m_material.texture(); |
| } |
| |
| /*! |
| \enum QSGSimpleTextureNode::TextureCoordinatesTransformFlag |
| |
| The TextureCoordinatesTransformFlag enum is used to specify the |
| mode used to generate texture coordinates for a textured quad. |
| |
| \value NoTransform Texture coordinates are oriented with window coordinates |
| i.e. with origin at top-left. |
| |
| \value MirrorHorizontally Texture coordinates are inverted in the horizontal axis with |
| respect to window coordinates |
| |
| \value MirrorVertically Texture coordinates are inverted in the vertical axis with |
| respect to window coordinates |
| */ |
| |
| /*! |
| Sets the method used to generate texture coordinates to \a mode. This can be used to obtain |
| correct orientation of the texture. This is commonly needed when using a third party OpenGL |
| library to render to texture as OpenGL has an inverted y-axis relative to Qt Quick. |
| |
| \sa textureCoordinatesTransform() |
| */ |
| void QSGSimpleTextureNode::setTextureCoordinatesTransform(QSGSimpleTextureNode::TextureCoordinatesTransformMode mode) |
| { |
| Q_D(QSGSimpleTextureNode); |
| if (d->texCoordMode == mode) |
| return; |
| d->texCoordMode = mode; |
| qsgsimpletexturenode_update(&m_geometry, texture(), m_rect, d->sourceRect, d->texCoordMode); |
| markDirty(DirtyMaterial); |
| } |
| |
| /*! |
| Returns the mode used to generate texture coordinates for this node. |
| |
| \sa setTextureCoordinatesTransform() |
| */ |
| QSGSimpleTextureNode::TextureCoordinatesTransformMode QSGSimpleTextureNode::textureCoordinatesTransform() const |
| { |
| Q_D(const QSGSimpleTextureNode); |
| return d->texCoordMode; |
| } |
| |
| /*! |
| Sets whether the node takes ownership of the texture to \a owns. |
| |
| By default, the node does not take ownership of the texture. |
| |
| \sa setTexture() |
| |
| \since 5.4 |
| */ |
| void QSGSimpleTextureNode::setOwnsTexture(bool owns) |
| { |
| Q_D(QSGSimpleTextureNode); |
| d->ownsTexture = owns; |
| } |
| |
| /*! |
| Returns \c true if the node takes ownership of the texture; otherwise returns \c false. |
| |
| \since 5.4 |
| */ |
| bool QSGSimpleTextureNode::ownsTexture() const |
| { |
| Q_D(const QSGSimpleTextureNode); |
| return d->ownsTexture; |
| } |
| |
| QT_END_NAMESPACE |