diff options
Diffstat (limited to 'src/gui/graphicsview/qgraphicsitem.cpp')
| -rw-r--r-- | src/gui/graphicsview/qgraphicsitem.cpp | 346 |
1 files changed, 103 insertions, 243 deletions
diff --git a/src/gui/graphicsview/qgraphicsitem.cpp b/src/gui/graphicsview/qgraphicsitem.cpp index c8e55e3..6770206 100644 --- a/src/gui/graphicsview/qgraphicsitem.cpp +++ b/src/gui/graphicsview/qgraphicsitem.cpp @@ -303,11 +303,12 @@ drop shadow effects and for decoration objects that follow the parent item's geometry without drawing on top of it. - \value ItemUsesExtendedStyleOption The item makes use of either - QStyleOptionGraphicsItem::exposedRect or QStyleOptionGraphicsItem::matrix. + \value ItemUsesExtendedStyleOption The item makes use of either the + exposedRect or matrix member of the QStyleOptionGraphicsItem. Implementers + of QGraphicsItem subclasses should set that flag if this data is required. By default, the exposedRect is initialized to the item's boundingRect and the matrix is untransformed. Enable this flag for more fine-grained values. - Use QStyleOptionGraphicsItem::levelOfDetailFromTransform for a more + Use QStyleOptionGraphicsItem::levelOfDetailFromTransform() for a more fine-grained value. \value ItemHasNoContents The item does not paint anything (i.e., calling @@ -1196,6 +1197,13 @@ QGraphicsItem::~QGraphicsItem() else d_ptr->setParentItemHelper(0); + if (d_ptr->transformData) { + for(int i = 0; i < d_ptr->transformData->graphicsTransforms.size(); ++i) { + QGraphicsTransform *t = d_ptr->transformData->graphicsTransforms.at(i); + static_cast<QGraphicsTransformPrivate *>(t->d_ptr)->item = 0; + delete t; + } + } delete d_ptr->transformData; delete d_ptr; @@ -2979,94 +2987,19 @@ QTransform QGraphicsItem::transform() const /*! \since 4.6 - Returns the rotation around the X axis. - - The default is 0 - - \warning The value doesn't take in account any rotation set with - the setTransform() method. - - \sa setXRotation(), {Transformations} -*/ -qreal QGraphicsItem::xRotation() const -{ - if (!d_ptr->transformData) - return 0; - return d_ptr->transformData->xRotation; -} - -/*! - \since 4.6 - - Sets the rotation around the X axis to \a angle degrees. - - \warning The value doesn't take in account any rotation set with the setTransform() method. - - \sa xRotation(), setTransformOrigin(), {Transformations} -*/ -void QGraphicsItem::setXRotation(qreal angle) -{ - prepareGeometryChange(); - if (!d_ptr->transformData) - d_ptr->transformData = new QGraphicsItemPrivate::TransformData; - d_ptr->transformData->xRotation = angle; - d_ptr->transformData->onlyTransform = false; - d_ptr->dirtySceneTransform = 1; -} - -/*! - \since 4.6 - - Returns the rotation around the Y axis. - - The default is 0 - - \warning The value doesn't take in account any rotation set with the setTransform() method. - - \sa setYRotation(), {Transformations} -*/ -qreal QGraphicsItem::yRotation() const -{ - if (!d_ptr->transformData) - return 0; - return d_ptr->transformData->yRotation; -} - -/*! - \since 4.6 - - Sets the rotation around the Y axis to \a angle degrees. - - \warning The value doesn't take in account any rotation set with the setTransform() method. - - \sa yRotation(), setTransformOrigin() {Transformations} -*/ -void QGraphicsItem::setYRotation(qreal angle) -{ - prepareGeometryChange(); - if (!d_ptr->transformData) - d_ptr->transformData = new QGraphicsItemPrivate::TransformData; - d_ptr->transformData->yRotation = angle; - d_ptr->transformData->onlyTransform = false; - d_ptr->dirtySceneTransform = 1; -} - -/*! - \since 4.6 - Returns the rotation around the Z axis. The default is 0 \warning The value doesn't take in account any rotation set with the setTransform() method. - \sa setZRotation(), {Transformations} + \sa setRotation(), {Transformations} */ -qreal QGraphicsItem::zRotation() const +qreal QGraphicsItem::rotation() const { if (!d_ptr->transformData) return 0; - return d_ptr->transformData->zRotation; + return d_ptr->transformData->rotation; } /*! @@ -3076,224 +3009,107 @@ qreal QGraphicsItem::zRotation() const \warning The value doesn't take in account any rotation set with the setTransform() method. - \sa zRotation(), setTransformOrigin(), {Transformations} + \sa rotation(), setTransformOriginPoint(), {Transformations} */ -void QGraphicsItem::setZRotation(qreal angle) +void QGraphicsItem::setRotation(qreal angle) { prepareGeometryChange(); if (!d_ptr->transformData) d_ptr->transformData = new QGraphicsItemPrivate::TransformData; - d_ptr->transformData->zRotation = angle; + d_ptr->transformData->rotation = angle; d_ptr->transformData->onlyTransform = false; d_ptr->dirtySceneTransform = 1; -} - -/*! - \since 4.6 - This convenience function set the rotation angles around the 3 axes - to \a x, \a y and \a z. - - \sa setXRotation(), setYRotation(), setZRotation(), {Transformations} -*/ -void QGraphicsItem::setRotation(qreal x, qreal y, qreal z) -{ - prepareGeometryChange(); - if (!d_ptr->transformData) - d_ptr->transformData = new QGraphicsItemPrivate::TransformData; - d_ptr->transformData->xRotation = x; - d_ptr->transformData->yRotation = y; - d_ptr->transformData->zRotation = z; - d_ptr->transformData->onlyTransform = false; - d_ptr->dirtySceneTransform = 1; + if (d_ptr->isObject) + emit static_cast<QGraphicsObject *>(this)->rotationChanged(); } /*! \since 4.6 - Returns the scale factor on the X axis. + Returns the scale factor of the item. The default is 1 \warning The value doesn't take in account any scaling set with the setTransform() method. - \sa setXScale(), {Transformations} + \sa setScale(), {Transformations} */ -qreal QGraphicsItem::xScale() const +qreal QGraphicsItem::scale() const { if (!d_ptr->transformData) - return 1; - return d_ptr->transformData->xScale; + return 1.; + return d_ptr->transformData->scale; } /*! \since 4.6 - Sets the scale factor on the X axis to \a factor. + Sets the scale factor of the item to \a factor. \warning The value doesn't take in account any scaling set with the setTransform() method. - \sa xScale(), setTransformOrigin(), {Transformations} + \sa scale(), setTransformOriginPoint(), {Transformations} */ -void QGraphicsItem::setXScale(qreal factor) +void QGraphicsItem::setScale(qreal factor) { prepareGeometryChange(); if (!d_ptr->transformData) d_ptr->transformData = new QGraphicsItemPrivate::TransformData; - d_ptr->transformData->xScale = factor; + d_ptr->transformData->scale = factor; d_ptr->transformData->onlyTransform = false; d_ptr->dirtySceneTransform = 1; -} - -/*! - \since 4.6 - - Returns the scale factor on the Y axis. - - The default is 1 - - \warning The value doesn't take in account any scaling set with the setTransform() method. - - \sa setYScale(), {Transformations} -*/ -qreal QGraphicsItem::yScale() const -{ - if (!d_ptr->transformData) - return 1; - return d_ptr->transformData->yScale; -} - -/*! - \since 4.6 - - Sets the scale factor on the Y axis to \a factor. - \warning The value doesn't take in account any scaling set with the setTransform() method. - - \sa yScale(), setTransformOrigin(), {Transformations} -*/ -void QGraphicsItem::setYScale(qreal factor) -{ - prepareGeometryChange(); - if (!d_ptr->transformData) - d_ptr->transformData = new QGraphicsItemPrivate::TransformData; - d_ptr->transformData->yScale = factor; - d_ptr->transformData->onlyTransform = false; - d_ptr->dirtySceneTransform = 1; + if (d_ptr->isObject) + emit static_cast<QGraphicsObject *>(this)->scaleChanged(); } -/*! - \since 4.6 - - This convenience function set the scaling factors on X and Y axis to \a sx and \a sy. - - \warning The value doesn't take in account any scaling set with the setTransform() method. - - \sa setXScale(), setYScale(), {Transformations} -*/ -void QGraphicsItem::setScale(qreal sx, qreal sy) -{ - prepareGeometryChange(); - if (!d_ptr->transformData) - d_ptr->transformData = new QGraphicsItemPrivate::TransformData; - d_ptr->transformData->xScale = sx; - d_ptr->transformData->yScale = sy; - d_ptr->transformData->onlyTransform = false; - d_ptr->dirtySceneTransform = 1; -} /*! \since 4.6 - Returns the horizontal shear. - - The default is 0 - - \warning The value doesn't take in account any shearing set with the setTransform() method. + returns list of graphics transformations on the item. - \sa setHorizontalShear(), {Transformations} + \sa scale(), setTransformOriginPoint(), {Transformations} */ -qreal QGraphicsItem::horizontalShear() const +QList<QGraphicsTransform *> QGraphicsItem::transformations() const { if (!d_ptr->transformData) - return 0; - return d_ptr->transformData->horizontalShear; + return QList<QGraphicsTransform *>(); + return d_ptr->transformData->graphicsTransforms; } /*! \since 4.6 - Sets the horizontal shear to \a shear. - - \warning The value doesn't take in account any shearing set with the setTransform() method. + Sets a list of graphics transformations on the item to \a transformations. - \sa horizontalShear(), {Transformations} + \sa scale(), setTransformOriginPoint(), {Transformations} */ -void QGraphicsItem::setHorizontalShear(qreal shear) +void QGraphicsItem::setTransformations(const QList<QGraphicsTransform *> &transformations) { prepareGeometryChange(); if (!d_ptr->transformData) d_ptr->transformData = new QGraphicsItemPrivate::TransformData; - d_ptr->transformData->horizontalShear = shear; + d_ptr->transformData->graphicsTransforms = transformations; + for (int i = 0; i < transformations.size(); ++i) + transformations.at(i)->d_func()->setItem(this); d_ptr->transformData->onlyTransform = false; d_ptr->dirtySceneTransform = 1; } -/*! - \since 4.6 - - Returns the vertical shear. - - The default is 0 - - \warning The value doesn't take in account any shearing set with the setTransform() method. - \sa setHorizontalShear(), {Transformations} -*/ -qreal QGraphicsItem::verticalShear() const +void QGraphicsItemPrivate::appendGraphicsTransform(QGraphicsTransform *t) { - if (!d_ptr->transformData) - return 0; - return d_ptr->transformData->verticalShear; -} + if (!transformData) + transformData = new QGraphicsItemPrivate::TransformData; + if (!transformData->graphicsTransforms.contains(t)) + transformData->graphicsTransforms.append(t); -/*! - \since 4.6 - - Sets the vertical shear to \a shear. - - \warning The value doesn't take in account any shearing set with the setTransform() method. - - \sa verticalShear(), {Transformations} -*/ -void QGraphicsItem::setVerticalShear(qreal shear) -{ - prepareGeometryChange(); - if (!d_ptr->transformData) - d_ptr->transformData = new QGraphicsItemPrivate::TransformData; - d_ptr->transformData->verticalShear = shear; - d_ptr->transformData->onlyTransform = false; - d_ptr->dirtySceneTransform = 1; -} - -/*! - \since 4.6 - - This convenience function sets the horizontal shear to \a sh and the vertical shear to \a sv. - - \warning The value doesn't take in account any shearing set with the setTransform() method. - - \sa setHorizontalShear(), setVerticalShear() -*/ -void QGraphicsItem::setShear(qreal sh, qreal sv) -{ - prepareGeometryChange(); - if (!d_ptr->transformData) - d_ptr->transformData = new QGraphicsItemPrivate::TransformData; - d_ptr->transformData->horizontalShear = sh; - d_ptr->transformData->verticalShear = sv; - d_ptr->transformData->onlyTransform = false; - d_ptr->dirtySceneTransform = 1; + Q_Q(QGraphicsItem); + t->d_func()->setItem(q); + transformData->onlyTransform = false; + dirtySceneTransform = 1; } /*! @@ -3303,9 +3119,9 @@ void QGraphicsItem::setShear(qreal sh, qreal sv) The default is QPointF(0,0). - \sa setTransformOrigin(), {Transformations} + \sa setTransformOriginPoint(), {Transformations} */ -QPointF QGraphicsItem::transformOrigin() const +QPointF QGraphicsItem::transformOriginPoint() const { if (!d_ptr->transformData) return QPointF(0,0); @@ -3317,9 +3133,9 @@ QPointF QGraphicsItem::transformOrigin() const Sets the \a origin point for the transformation in item coordinates. - \sa transformOrigin(), {Transformations} + \sa transformOriginPoint(), {Transformations} */ -void QGraphicsItem::setTransformOrigin(const QPointF &origin) +void QGraphicsItem::setTransformOriginPoint(const QPointF &origin) { prepareGeometryChange(); if (!d_ptr->transformData) @@ -3331,15 +3147,15 @@ void QGraphicsItem::setTransformOrigin(const QPointF &origin) } /*! - \fn void QGraphicsItem::setTransformOrigin(qreal x, qreal y) + \fn void QGraphicsItem::setTransformOriginPoint(qreal x, qreal y) \since 4.6 \overload Sets the origin point for the transformation in item coordinates. - This is equivalent to calling setTransformOrigin(QPointF(\a x, \a y)). + This is equivalent to calling setTransformOriginPoint(QPointF(\a x, \a y)). - \sa setTransformOrigin(), {Transformations} + \sa setTransformOriginPoint(), {Transformations} */ @@ -3618,7 +3434,7 @@ void QGraphicsItem::setMatrix(const QMatrix &matrix, bool combine) \warning using this function doesnt affect the value of the transformation properties - \sa transform(), setRotation(), setScale(), setShear(), setTransformOrigin(), {The Graphics View Coordinate System}, {Transformations} + \sa transform(), setRotation(), setScale(), setTransformOriginPoint(), {The Graphics View Coordinate System}, {Transformations} */ void QGraphicsItem::setTransform(const QTransform &matrix, bool combine) { @@ -3732,7 +3548,7 @@ void QGraphicsItem::shear(qreal sh, qreal sv) /*! \obsolete - Use setPos() or setTransformOrigin() instead. + Use setPos() or setTransformOriginPoint() instead. Translates the current item transformation by (\a dx, \a dy). @@ -6856,6 +6672,41 @@ QGraphicsObject::QGraphicsObject(QGraphicsItemPrivate &dd, QGraphicsItem *parent \sa pos() */ +/*! + \property QGraphicsObject::rotation + This property holds the rotation of the item in degrees. + + This specifies how many degrees to rotate the item around its transformOrigin. + The default rotation is 0 degrees (i.e. not rotated at all). +*/ + +/*! + \fn QGraphicsObject::rotationChanged() + + This signal gets emitted whenever the roation of the item changes. +*/ + +/*! + \property QGraphicsObject::scale + This property holds the scale of the item. + + A scale of less than 1 means the item will be displayed smaller than + normal, and a scale of greater than 1 means the item will be + displayed larger than normal. A negative scale means the item will + be mirrored. + + By default, items are displayed at a scale of 1 (i.e. at their + normal size). + + Scaling is from the item's transformOrigin. +*/ + +/*! + \fn void QGraphicsObject::scaleChanged() + + This signal is emitted when the scale of the item changes. +*/ + /*! \property QGraphicsObject::enabled @@ -6895,6 +6746,15 @@ QGraphicsObject::QGraphicsObject(QGraphicsItemPrivate &dd, QGraphicsItem *parent \sa visible */ +/*! + \property QGraphicsObject::transformOriginPoint + \brief the transformation origin + + This property sets a specific point in the items coordiante system as the + origin for scale and rotation. + + \sa scale, rotation, QGraphicsItem::transformOriginPoint() +*/ /*! |