QRectF Class Reference

The QRectF class defines a rectangle in the plane using floating point precision. More...

#include <qrect.h>

Public Functions
void	adjust (qreal x1, qreal y1, qreal x2, qreal y2)
	Adds dx1, dy1, dx2 and dy2 respectively to the existing coordinates of the rectangle. More...
QRectF	adjusted (qreal x1, qreal y1, qreal x2, qreal y2) const
	Returns a new rectangle with dx1, dy1, dx2 and dy2 added respectively to the existing coordinates of this rectangle. More...
qreal	bottom () const
	Returns the y-coordinate of the rectangle's bottom edge. More...
QPointF	bottomLeft () const
	Returns the position of the rectangle's bottom-left corner. More...
QPointF	bottomRight () const
	Returns the position of the rectangle's bottom-right corner. More...
QPointF	center () const
	Returns the center point of the rectangle. More...
bool	contains (const QPointF &p) const
	Returns true if the given point is inside or on the edge of the rectangle; otherwise returns false. More...
bool	contains (qreal x, qreal y) const
	Returns true if the point (x, y) is inside or on the edge of the rectangle; otherwise returns false. More...
bool	contains (const QRectF &r) const
	Returns true if the given rectangle is inside this rectangle; otherwise returns false. More...
void	getCoords (qreal *x1, qreal *y1, qreal *x2, qreal *y2) const
	Extracts the position of the rectangle's top-left corner to *x1 and *y1, and the position of the bottom-right corner to *x2 and y2. More...
void	getRect (qreal *x, qreal *y, qreal *w, qreal *h) const
	Extracts the position of the rectangle's top-left corner to *x and y, and its dimensions to *width and *height. More...
qreal	height () const
	Returns the height of the rectangle. More...
QRectF	intersect (const QRectF &r) const
	Use intersected(rectangle) instead. More...
QRectF	intersected (const QRectF &other) const
	Returns the intersection of this rectangle and the given rectangle. More...
bool	intersects (const QRectF &r) const
	Returns true if this rectangle intersects with the given rectangle (i. More...
bool	isEmpty () const
	Returns true if the rectangle is empty, otherwise returns false. More...
bool	isNull () const
	Returns true if the rectangle is a null rectangle, otherwise returns false. More...
bool	isValid () const
	Returns true if the rectangle is valid, otherwise returns false. More...
qreal	left () const
	Returns the x-coordinate of the rectangle's left edge. More...
void	moveBottom (qreal pos)
	Moves the rectangle vertically, leaving the rectangle's bottom edge at the given y coordinate. More...
void	moveBottomLeft (const QPointF &p)
	Moves the rectangle, leaving the bottom-left corner at the given position. More...
void	moveBottomRight (const QPointF &p)
	Moves the rectangle, leaving the bottom-right corner at the given position. More...
void	moveCenter (const QPointF &p)
	Moves the rectangle, leaving the center point at the given position. More...
void	moveLeft (qreal pos)
	Moves the rectangle horizontally, leaving the rectangle's left edge at the given x coordinate. More...
void	moveRight (qreal pos)
	Moves the rectangle horizontally, leaving the rectangle's right edge at the given x coordinate. More...
void	moveTo (qreal x, qreal t)
	Moves the rectangle, leaving the top-left corner at the given position (x, y). More...
void	moveTo (const QPointF &p)
	Moves the rectangle, leaving the top-left corner at the given position. More...
void	moveTop (qreal pos)
	Moves the rectangle vertically, leaving the rectangle's top line at the given y coordinate. More...
void	moveTopLeft (const QPointF &p)
	Moves the rectangle, leaving the top-left corner at the given position. More...
void	moveTopRight (const QPointF &p)
	Moves the rectangle, leaving the top-right corner at the given position. More...
QRectF	normalized () const
	Returns a normalized rectangle; i.e., a rectangle that has a non-negative width and height. More...
QRectF	operator & (const QRectF &r) const
	Returns the intersection of this rectangle and the given rectangle. More...
QRectF &	operator &= (const QRectF &r)
QRectF	operator| (const QRectF &r) const
	Returns the bounding rectangle of this rectangle and the given rectangle. More...
QRectF &	operator|= (const QRectF &r)
	Unites this rectangle with the given rectangle. More...
	QRectF ()
	Constructs a null rectangle. More...
	QRectF (const QPointF &topleft, const QSizeF &size)
	Constructs a rectangle with the given topLeft corner and the given size. More...
	QRectF (const QPointF &topleft, const QPointF &bottomRight)
	Constructs a rectangle with the given topLeft and bottomRight corners. More...
	QRectF (qreal left, qreal top, qreal width, qreal height)
	Constructs a rectangle with (x, y) as its top-left corner and the given width and height. More...
	QRectF (const QRect &rect)
	Constructs a QRectF rectangle from the given QRect rectangle. More...
qreal	right () const
	Returns the x-coordinate of the rectangle's right edge. More...
void	setBottom (qreal pos)
	Sets the bottom edge of the rectangle to the given y coordinate. More...
void	setBottomLeft (const QPointF &p)
	Set the bottom-left corner of the rectangle to the given position. More...
void	setBottomRight (const QPointF &p)
	Set the bottom-right corner of the rectangle to the given position. More...
void	setCoords (qreal x1, qreal y1, qreal x2, qreal y2)
	Sets the coordinates of the rectangle's top-left corner to (x1, y1), and the coordinates of its bottom-right corner to (x2, y2). More...
void	setHeight (qreal h)
	Sets the height of the rectangle to the given height. More...
void	setLeft (qreal pos)
	Sets the left edge of the rectangle to the given x coordinate. More...
void	setRect (qreal x, qreal y, qreal w, qreal h)
	Sets the coordinates of the rectangle's top-left corner to (x, y), and its size to the given width and height. More...
void	setRight (qreal pos)
	Sets the right edge of the rectangle to the given x coordinate. More...
void	setSize (const QSizeF &s)
	Sets the size of the rectangle to the given size. More...
void	setTop (qreal pos)
	Sets the top edge of the rectangle to the given y coordinate. More...
void	setTopLeft (const QPointF &p)
	Set the top-left corner of the rectangle to the given position. More...
void	setTopRight (const QPointF &p)
	Set the top-right corner of the rectangle to the given position. More...
void	setWidth (qreal w)
	Sets the width of the rectangle to the given width. More...
void	setX (qreal pos)
	Sets the left edge of the rectangle to the given x coordinate. More...
void	setY (qreal pos)
	Sets the top edge of the rectangle to the given y coordinate. More...
QSizeF	size () const
	Returns the size of the rectangle. More...
QRect	toAlignedRect () const
	Returns a QRect based on the values of this rectangle that is the smallest possible integer rectangle that completely contains this rectangle. More...
qreal	top () const
	Returns the y-coordinate of the rectangle's top edge. More...
QPointF	topLeft () const
	Returns the position of the rectangle's top-left corner. More...
QPointF	topRight () const
	Returns the position of the rectangle's top-right corner. More...
QRect	toRect () const
	Returns a QRect based on the values of this rectangle. More...
void	translate (qreal dx, qreal dy)
	Moves the rectangle dx along the x-axis and dy along the y-axis, relative to the current position. More...
void	translate (const QPointF &p)
	Moves the rectangle {offset}. More...
QRectF	translated (qreal dx, qreal dy) const
	Returns a copy of the rectangle that is translated dx along the x axis and dy along the y axis, relative to the current position. More...
QRectF	translated (const QPointF &p) const
	Returns a copy of the rectangle that is translated {offset}. More...
QRectF	unite (const QRectF &r) const
	Use united(rectangle) instead. More...
QRectF	united (const QRectF &other) const
	Returns the bounding rectangle of this rectangle and the given rectangle. More...
qreal	width () const
	Returns the width of the rectangle. More...
qreal	x () const
	Returns the x-coordinate of the rectangle's left edge. More...
qreal	y () const
	Returns the y-coordinate of the rectangle's top edge. More...

Properties
qreal	h
qreal	w
qreal	xp
qreal	yp

Friends
Q_CORE_EXPORT_INLINE bool	operator!= (const QRectF &, const QRectF &)
	Returns true if the rectangles r1 and r2 are different, otherwise returns false. More...
Q_CORE_EXPORT_INLINE bool	operator== (const QRectF &, const QRectF &)
	Returns true if the rectangles r1 and r2 are equal, otherwise returns false. More...

Related Functions
(Note that these are not member functions.)
QDataStream &	operator<< (QDataStream &stream, const QRectF &rectangle)
	Writes the rectangle to the stream, and returns a reference to the stream. More...
QDataStream &	operator>> (QDataStream &stream, QRectF &rectangle)
	Reads a rectangle from the stream, and returns a reference to the stream. More...

Detailed Description

The QRectF class defines a rectangle in the plane using floating point precision.

A rectangle is normally expressed as an upper-left corner and a size. The size (width and height) of a QRectF is always equivalent to the mathematical rectangle that forms the basis for its rendering.

A QRectF can be constructed with a set of left, top, width and height integers, or from a QPoint and a QSize. The following code creates two identical rectangles.

QRectF r1(100, 200, 11, 16);
QRectF r2(QPoint(100, 200), QSize(11, 16));

There is also a third constructor creating a QRectF from a QRect, and a corresponding toRect() function that returns a QRect object based on the values of this rectangle (note that the coordinates in the returned rectangle are rounded to the nearest integer).

The QRectF class provides a collection of functions that return the various rectangle coordinates, and enable manipulation of these. QRectF also provide functions to move the rectangle relative to the various coordinates. In addition there is a moveTo() function that moves the rectangle, leaving its top left corner at the given coordinates. Alternatively, the translate() function moves the rectangle the given offset relative to the current position, and the translated() function returns a translated copy of this rectangle.

The size() function returns the rectange's dimensions as a QSize. The dimensions can also be retrieved separately using the width() and height() functions. To manipulate the dimensions use the setSize(), setWidth() or setHeight() functions. Alternatively, the size can be changed by applying either of the functions setting the rectangle coordinates, for example, setBottom() or setRight().

The contains() function tells whether a given point is inside the rectangle or not, and the intersects() function returns true if this rectangle intersects with a given rectangle (otherwise false). The QRectF class also provides the intersected() function which returns the intersection rectangle, and the united() function which returns the rectangle that encloses the given rectangle and this:

intersected()	united()

The isEmpty() function returns true if the rectangle's width or height is less than, or equal to, 0. Note that an empty rectangle is not valid: The isValid() function returns true if both width and height is larger than 0. A null rectangle (isNull() == true) on the other hand, has both width and height set to 0.

Note that due to the way QRect and QRectF are defined, an empty QRectF is defined in essentially the same way as QRect.

Finally, QRectF objects can be streamed as well as compared.

Rendering

When using an QPainter::Antialiasing{anti-aliased} painter, the boundary line of a QRectF will be rendered symmetrically on both sides of the mathematical rectangle's boundary line. But when using an aliased painter (the default) other rules apply.

Then, when rendering with a one pixel wide pen the QRectF's boundary line will be rendered to the right and below the mathematical rectangle's boundary line.

When rendering with a two pixels wide pen the boundary line will be split in the middle by the mathematical rectangle. This will be the case whenever the pen is set to an even number of pixels, while rendering with a pen with an odd number of pixels, the spare pixel will be rendered to the right and below the mathematical rectangle as in the one pixel case.

Logical representation	One pixel wide pen
Two pixel wide pen	Three pixel wide pen

Coordinates

The QRectF class provides a collection of functions that return the various rectangle coordinates, and enable manipulation of these. QRectF also provide functions to move the rectangle relative to the various coordinates.

For example: the bottom(), setBottom() and moveBottom() functions: bottom() returns the y-coordinate of the rectangle's bottom edge, setBottom() sets the bottom edge of the rectangle to the given y coordinate (it may change the height, but will never change the rectangle's top edge) and moveBottom() moves the entire rectangle vertically, leaving the rectangle's bottom edge at the given y coordinate and its size unchanged.

It is also possible to add offsets to this rectangle's coordinates using the adjust() function, as well as retrieve a new rectangle based on adjustments of the original one using the adjusted() function. If either of the width and height is negative, use the normalized() function to retrieve a rectangle where the corners are swapped.

In addition, QRectF provides the getCoords() function which extracts the position of the rectangle's top-left and bottom-right corner, and the getRect() function which extracts the rectangle's top-left corner, width and height. Use the setCoords() and setRect() function to manipulate the rectangle's coordinates and dimensions in one go.

See also

QRect, QRegion

Definition at line 511 of file qrect.h.

Constructors and Destructors

QRectF() [1/5]

QRectF::QRectF ( )

inline

Constructs a null rectangle.

See also

isNull()

Definition at line 514 of file qrect.h.

Referenced by adjusted(), and translated().

{ xp = yp = 0.; w = h = 0.; }

QRectF() [2/5]

QRectF::QRectF ( const QPointF &  topLeft, const QSizeF &  size  )

inline

Constructs a rectangle with the given topLeft corner and the given size.

See also

setTopLeft(), setSize()

Definition at line 634 of file qrect.h.

{
    xp = atopLeft.x();
    yp = atopLeft.y();
    w = asize.width();
    h = asize.height();
}

QRectF() [3/5]

QRectF::QRectF ( const QPointF &  topLeft, const QPointF &  bottomRight  )

inline

Constructs a rectangle with the given topLeft and bottomRight corners.

Since

4.3

See also

setTopLeft(), setBottomRight()

Definition at line 642 of file qrect.h.

{
    xp = atopLeft.x();
    yp = atopLeft.y();
    w = abottomRight.x() - xp;
    h = abottomRight.y() - yp;
}

QRectF() [4/5]

QRectF::QRectF ( qreal  x, qreal  y, qreal  width, qreal  height  )

inline

Constructs a rectangle with (x, y) as its top-left corner and the given width and height.

See also

setRect()

Definition at line 629 of file qrect.h.

    : xp(aleft), yp(atop), w(awidth), h(aheight)
{
}

QRectF() [5/5]

QRectF::QRectF ( const QRect &  rectangle )

inline

Constructs a QRectF rectangle from the given QRect rectangle.

See also

toRect()

Definition at line 650 of file qrect.h.

    : xp(r.x()), yp(r.y()), w(r.width()), h(r.height())
{
}

Functions

adjust()

void QRectF::adjust ( qreal  dx1, qreal  dy1, qreal  dx2, qreal  dy2  )

inline

Adds dx1, dy1, dx2 and dy2 respectively to the existing coordinates of the rectangle.

See also

adjusted(), setRect()

Definition at line 778 of file qrect.h.

Referenced by _q_adjustRect(), QPlainTextDocumentLayout::blockBoundingRect(), QBlitterPaintEnginePrivate::clipAndDrawPixmap(), QTextDocumentLayoutPrivate::drawFrameDecoration(), QmlJSDebugger::BoundingRectHighlighter::highlightAll(), QTextControl::selectionRect(), QmlJSDebugger::SubcomponentMaskLayerItem::setCurrentItem(), QGraphicsLinearLayout::setGeometry(), and QGraphicsGridLayout::setGeometry().

{ xp += xp1; yp += yp1; w += xp2 - xp1; h += yp2 - yp1; }

adjusted()

QRectF QRectF::adjusted ( qreal  dx1, qreal  dy1, qreal  dx2, qreal  dy2  ) const

inline

Returns a new rectangle with dx1, dy1, dx2 and dy2 added respectively to the existing coordinates of this rectangle.

See also

adjust()

Definition at line 781 of file qrect.h.

Referenced by QPlainTextEditPrivate::_q_repaintContents(), QPixmapConvolutionFilter::boundingRectFor(), QPixmapBlurFilter::boundingRectFor(), QPixmapDropShadowFilter::boundingRectFor(), QGLLineMaskGenerator::computeScreenRect(), QGLRectMaskGenerator::computeScreenRect(), QGraphicsLayoutItem::contentsRect(), convolute(), QPainterPrivate::draw_helper(), QStyleHelper::drawDial(), QGraphicsScenePrivate::drawItemHelper(), QPlastiqueStyle::drawPrimitive(), QGraphicsItemEffectSourcePrivate::paddedEffectRect(), QWidgetEffectSourcePrivate::pixmap(), QGLPixmapBlurFilter::processGL(), qt_graphicsItem_highlightSelected(), QGLEllipseMaskGenerator::screenRect(), QGL2PaintEngineExPrivate::stroke(), QPaintBufferPrivate::updateBoundingRect(), QGraphicsWidget::windowFrameGeometry(), and QGraphicsWidget::windowFrameRect().

{ return QRectF(xp + xp1, yp + yp1, w + xp2 - xp1, h + yp2 - yp1); }

bottom()

qreal QRectF::bottom ( ) const

inline

Returns the y-coordinate of the rectangle's bottom edge.

See also

setBottom(), bottomLeft(), bottomRight()

Definition at line 528 of file qrect.h.

Referenced by _q_boundGeometryToSizeConstraints(), QGL2PEXVertexArray::addQuad(), QGL2PEXVertexArray::addRect(), QmlJSDebugger::QDeclarativeViewInspector::adjustToScreenBoundaries(), QRenderRule::borderClip(), QGraphicsSceneBspTree::climbTree(), QBlitterPaintEnginePrivate::clipAndDrawPixmap(), QOpenGLPaintEnginePrivate::copyDrawable(), QTextDocumentLayout::draw(), QTextDocumentLayoutPrivate::drawBlock(), QTextDocumentLayoutPrivate::drawBorder(), QOpenGLPaintEnginePrivate::drawFastRect(), QTextDocumentLayoutPrivate::drawFlow(), QTextDocumentLayoutPrivate::drawFrame(), QRasterPaintEngine::drawImage(), QGL2PaintEngineEx::drawPixmap(), QGL2PaintEngineExPrivate::drawPixmapFragments(), QPaintEngineEx::drawRoundedRect(), QGL2PaintEngineEx::drawTexture(), drawTexture(), QOpenGLPaintEngine::drawTextureRect(), QOutlineMapper::endOutline(), QPlainTextEditPrivate::ensureVisible(), QGraphicsView::ensureVisible(), QGL2PaintEngineExPrivate::fill(), QBlitterPaintEngine::fillRect(), QIntersectionFinder::hasIntersections(), QPlainTextEditControl::hitTest(), QTextDocumentLayoutPrivate::hitTest(), QGraphicsSceneBspTree::initialize(), QPainterPath::intersects(), QTextDocumentLayoutPrivate::layoutBlock(), needsPerspectiveClipping(), QMatrix4x4::ortho(), QPlainTextEditPrivate::pageUpDown(), QPlainTextEdit::paintEvent(), QDashStroker::processCurrentSubpath(), QGLPixmapBlurFilter::processGL(), qMapGradientToRect(), qSubImage(), qt_isect_curve_horizontal(), qt_isect_curve_vertical(), qt_painterpath_check_crossing(), qt_painterpath_isect_line_rect(), qt_scale_image_16bit(), qt_scale_image_32bit(), qt_transform_image(), QRasterizer::rasterize(), QGraphicsViewPrivate::recalculateContentSize(), QGL2PaintEngineExPrivate::resetClipIfNeeded(), QmlJSDebugger::resizeRect(), QVGPaintEnginePrivate::roundedRectPath(), QGLEllipseMaskGenerator::screenRect(), QPainter::setClipRect(), QTextBrowserPrivate::setSource(), toAlignedRect_positive(), toNormalizedFillRect(), QAlphaPaintEnginePrivate::toRect(), QTest::toString(), QPaintBufferPrivate::updateBoundingRect(), QSGGeometry::updateRectGeometry(), ShaderEffect::updateRenderTargets(), QSGGeometry::updateTexturedRectGeometry(), QPlainTextEditPrivate::verticalOffset(), QGraphicsWidget::windowFrameSectionAt(), and QPicturePaintEngine::writeCmdLength().

{ return yp + h; }

bottomLeft()

QPointF QRectF::bottomLeft ( ) const

inline

Returns the position of the rectangle's bottom-left corner.

See also

setBottomLeft(), bottom(), left()

Definition at line 542 of file qrect.h.

Referenced by QPainterPath::contains(), QRasterPaintEngine::drawImage(), QVGPaintEngine::drawRects(), QRasterPaintEngine::drawRects(), QRasterPaintEngine::drawTiledPixmap(), QRasterPaintEngine::fill(), QVGPaintEngine::fillRect(), QRasterPaintEngine::fillRect(), QGraphicsView::mapFromScene(), QMatrix4x4::mapRect(), and QGraphicsViewPrivate::mapToScene().

{ return QPointF(xp, yp+h); }

bottomRight()

QPointF QRectF::bottomRight ( ) const

inline

Returns the position of the rectangle's bottom-right corner.

See also

setBottomRight(), bottom(), right()

Definition at line 540 of file qrect.h.

Referenced by QPlainTextDocumentLayout::blockBoundingRect(), QPainterPath::contains(), QRasterPaintEngine::drawImage(), QVGPaintEngine::drawRects(), QRasterPaintEngine::drawRects(), QRasterPaintEngine::drawTiledPixmap(), QRasterPaintEngine::fill(), QVGPaintEngine::fillRect(), QRasterPaintEngine::fillRect(), QIntersectionFinder::hasIntersections(), QOpenGLPaintEnginePrivate::isFastRect(), QGraphicsView::mapFromScene(), QMatrix4x4::mapRect(), QGraphicsViewPrivate::mapToScene(), qt_mapRect_non_normalizing(), and QGLEllipseMaskGenerator::screenRect().

{ return QPointF(xp+w, yp+h); }

center()

QPointF QRectF::center ( ) const

inline

Returns the center point of the rectangle.

See also

moveCenter()

Definition at line 686 of file qrect.h.

Referenced by QGraphicsView::centerOn(), QPainterPath::contains(), QStyleHelper::drawDial(), QGLEllipseMaskGenerator::drawMask(), QPainter::drawPie(), QPlainTextEditPrivate::ensureVisible(), QGraphicsView::fitInView(), QIntersectionFinder::hasIntersections(), QGraphicsSceneBspTree::initialize(), QPainterPath::intersects(), QTouchEvent::TouchPoint::pos(), qMapGradientToRect(), qt_find_ellipse_coords(), QTouchEvent::TouchPoint::scenePos(), QTouchEvent::TouchPoint::screenPos(), QGLEllipseMaskGenerator::screenRect(), QGraphicsView::setScene(), and QApplicationPrivate::updateTouchPointsForWidget().

{ return QPointF(xp + w/2, yp + h/2); }

contains() [1/3]

bool QRectF::contains

(

const QPointF &

point

)

const

Returns true if the given point is inside or on the edge of the rectangle; otherwise returns false.

See also

intersects()

Definition at line 2349 of file qrect.cpp.

Referenced by QPathClipper::clip(), QPathClipper::contains(), QPainterPath::contains(), contains(), QGraphicsTextItem::contains(), QPixmapConvolutionFilter::draw(), QGraphicsViewPrivate::findItems(), QDeclarativePathViewPrivate::handleMousePressEvent(), QGraphicsItemPrivate::initStyleOption(), QGraphicsSceneIndexRectIntersector::intersect(), QPathClipper::intersect(), QGraphicsSceneIndexPointIntersector::intersect(), QPainterPath::intersects(), QDeclarativeMouseArea::mouseMoveEvent(), QGraphicsItem::mousePressEvent(), QGraphicsTextItem::mouseReleaseEvent(), qt_format_text(), and QGraphicsWidget::windowFrameSectionAt().

{
    qreal l = xp;
    qreal r = xp;
    if (w < 0)
        l += w;
    else
        r += w;
    if (l == r) // null rect
        return false;

    if (p.x() < l || p.x() > r)
        return false;

    qreal t = yp;
    qreal b = yp;
    if (h < 0)
        t += h;
    else
        b += h;
    if (t == b) // null rect
        return false;

    if (p.y() < t || p.y() > b)
        return false;

    return true;
}

contains() [2/3]

bool QRectF::contains ( qreal  x, qreal  y  ) const

inline

Returns true if the point (x, y) is inside or on the edge of the rectangle; otherwise returns false.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 796 of file qrect.h.

{
    return contains(QPointF(ax, ay));
}

contains() [3/3]

bool QRectF::contains

(

const QRectF &

rectangle

)

const

Returns true if the given rectangle is inside this rectangle; otherwise returns false.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 2401 of file qrect.cpp.

{
    qreal l1 = xp;
    qreal r1 = xp;
    if (w < 0)
        l1 += w;
    else
        r1 += w;
    if (l1 == r1) // null rect
        return false;

    qreal l2 = r.xp;
    qreal r2 = r.xp;
    if (r.w < 0)
        l2 += r.w;
    else
        r2 += r.w;
    if (l2 == r2) // null rect
        return false;

    if (l2 < l1 || r2 > r1)
        return false;

    qreal t1 = yp;
    qreal b1 = yp;
    if (h < 0)
        t1 += h;
    else
        b1 += h;
    if (t1 == b1) // null rect
        return false;

    qreal t2 = r.yp;
    qreal b2 = r.yp;
    if (r.h < 0)
        t2 += r.h;
    else
        b2 += r.h;
    if (t2 == b2) // null rect
        return false;

    if (t2 < t1 || b2 > b1)
        return false;

    return true;
}

getCoords()

void QRectF::getCoords ( qreal *  x1, qreal *  y1, qreal *  x2, qreal *  y2  ) const

inline

Extracts the position of the rectangle's top-left corner to *x1 and *y1, and the position of the bottom-right corner to *x2 and y2.

See also

setCoords(), getRect()

Definition at line 762 of file qrect.h.

{
    *xp1 = xp;
    *yp1 = yp;
    *xp2 = xp + w;
    *yp2 = yp + h;
}

getRect()

void QRectF::getRect ( qreal *  x, qreal *  y, qreal *  width, qreal *  height  ) const

inline

Extracts the position of the rectangle's top-left corner to *x and y, and its dimensions to *width and *height.

See also

setRect(), getCoords()

Definition at line 746 of file qrect.h.

Referenced by _q_interpolate().

{
    *ax = this->xp;
    *ay = this->yp;
    *aaw = this->w;
    *aah = this->h;
}

height()

qreal QRectF::height ( ) const

inline

Returns the height of the rectangle.

See also

setHeight(), width(), size()

Definition at line 710 of file qrect.h.

Referenced by _q_adjustRect(), QPlainTextEditPrivate::_q_adjustScrollbars(), _q_boundGeometryToSizeConstraints(), QPainterPath::addEllipse(), QGL2PEXVertexArray::addPath(), QPathSegments::addPath(), QPainterPath::addRect(), QPainterPath::addRoundedRect(), QPainterPath::addRoundRect(), QPainterPath::arcTo(), QPlainTextEditControl::blockBoundingRect(), QDeclarativeItemPrivate::computeTransformOrigin(), QPathClipper::contains(), QOpenGLPaintEnginePrivate::copyDrawable(), QPainter::PixmapFragment::create(), createRectNode(), QTriangulatingStroker::cubicTo(), QGraphicsSceneBspTree::debug(), QPlainTextDocumentLayout::documentChanged(), QTextLayout::draw(), QAlphaPaintEnginePrivate::drawAlphaImage(), QPainter::drawArc(), QTextDocumentLayoutPrivate::drawBlock(), QPainter::drawChord(), QCoreGraphicsPaintEngine::drawEllipse(), QVGPaintEngine::drawEllipse(), QRasterPaintEngine::drawEllipse(), QPainter::drawEllipse(), QTextDocumentLayoutPrivate::drawFrameDecoration(), QPdfEngine::drawImage(), QCoreGraphicsPaintEngine::drawImage(), QX11PaintEngine::drawImage(), QVGPaintEngine::drawImage(), QSvgPaintEngine::drawImage(), QPaintEngine::drawImage(), QRasterPaintEngine::drawImage(), QPainter::drawImage(), QOpenGLPaintEnginePrivate::drawImageAsPath(), QPSPrintEngine::drawImageInternal(), drawImageTiled(), QGraphicsScenePrivate::drawItemHelper(), QGLEllipseMaskGenerator::drawMask(), QPainter::drawPath(), QPainter::drawPie(), QWin32PrintEngine::drawPixmap(), QPdfEngine::drawPixmap(), QCoreGraphicsPaintEngine::drawPixmap(), QX11PaintEngine::drawPixmap(), QPainter::drawPixmap(), QVGPaintEngine::drawPixmapFragments(), QVGPaintEngine::drawRects(), QPaintEngine::drawRects(), QPaintEngineEx::drawRects(), QRasterPaintEngine::drawRects(), QPdfBaseEngine::drawRects(), QPainter::drawRects(), QPaintEngineEx::drawRoundedRect(), QPainter::drawRoundedRect(), QTextDocumentLayoutPrivate::drawTableCell(), QPainter::drawText(), QPSPrintEngine::drawTiledPixmap(), QWin32PrintEngine::drawTiledPixmap(), QCoreGraphicsPaintEngine::drawTiledPixmap(), QX11PaintEngine::drawTiledPixmap(), QOpenGLPaintEngine::drawTiledPixmap(), QPaintEngine::drawTiledPixmap(), QRasterPaintEngine::drawTiledPixmap(), QPaintEngineEx::drawTiledPixmap(), QPainter::drawTiledPixmap(), drawVGImage(), QPdfEnginePrivate::embedFont(), QOutlineMapper::endOutline(), QPlainTextEditPrivate::ensureVisible(), QScriptEdit::extraAreaPaintEvent(), QEmulationPaintEngine::fill(), QRasterPaintEngine::fill(), QEmulationPaintEngine::fillBGRect(), QVGPaintEngine::fillRect(), QPaintEngineEx::fillRect(), QBlitterPaintEnginePrivate::fillRect(), QRasterPaintEngine::fillRect(), QGridLayoutEngine::fillRowData(), QGraphicsView::fitInView(), QDeclarativeCompiler::genLiteralAssignment(), QDeclarativePaintedItem::geometryChanged(), QDeclarativeItem::geometryChanged(), QDeclarativeFlickable::geometryChanged(), QGraphicsScene::height(), QPlainTextEditControl::hitTest(), QGraphicsSceneBspTree::initialize(), QPathClipper::intersect(), QDeclarativeLoaderPrivate::itemGeometryChanged(), QDeclarativeContents::itemGeometryChanged(), QDeclarativeAnchorsPrivate::itemGeometryChanged(), QDeclarativeGridViewPrivate::itemGeometryChanged(), QDeclarativeListViewPrivate::itemGeometryChanged(), QTextDocumentLayoutPrivate::layoutBlock(), QTextDocumentLayoutPrivate::layoutFlow(), QLabelPrivate::layoutRect(), QSvgIOHandlerPrivate::load(), QMacPixmapData::macCreatePixels(), QMatrix::mapRect(), QTransform::mapRect(), QMatrix4x4::mapRect(), QSvgTinyDocument::mapSourceToTarget(), QPaintBuffer::metric(), QmlJSDebugger::ZoomTool::mouseReleaseEvent(), operator<<(), QPlainTextEditPrivate::pageUpDown(), QFontFamilyDelegate::paint(), QDeclarativeParticlesPainter::paint(), QPlainTextEdit::paintEvent(), printPage(), QDashedStrokeProcessor::process(), QGLPixmapBlurFilter::processGL(), qDrawBorder(), QPolygonF::QPolygonF(), QRectF_intersects(), qt_curves_for_arc(), qt_find_ellipse_coords(), qt_format_text(), qt_graphicsItem_highlightSelected(), qt_isect_curve_horizontal(), qt_isect_curve_vertical(), qt_mac_compose_rect(), qt_mac_create_imagemask(), qt_painterpath_isect_curve(), qt_scale_image_16bit(), qt_scale_image_32bit(), qt_scale_image_argb24_on_rgb16(), qt_scale_image_argb32_on_argb32(), qt_scale_image_argb32_on_rgb16(), qt_scale_image_rgb16_on_rgb16(), qt_scale_image_rgb32_on_rgb32(), QGraphicsViewPrivate::recalculateContentSize(), QGraphicsScene::render(), QGraphicsView::render(), QPaintEngineExPrivate::replayClipOperations(), QVGPaintEnginePrivate::roundedRectPath(), scaleRect(), QPainter::setClipPath(), QPainter::setClipRect(), QDeclarativeLayoutItem::setGeometry(), QX11WindowSurface::setGeometry(), setPenAndDrawBackground(), QTextBrowserPrivate::setSource(), QDeclarativeTextPrivate::setupTextLayout(), QDeclarativeRectFValueType::setY(), shift(), stretchGradientToUserSpace(), QEmulationPaintEngine::stroke(), toRect_normalized(), QTest::toString(), glyph_metrics_t::transformed(), ShaderEffectItem::updateEffectState(), ShaderEffectItem::updateGeometry(), and QPicturePaintEngine::writeCmdLength().

{ return h; }

intersect()

QRectF QRectF::intersect ( const QRectF &  rectangle ) const

inline

Use intersected(rectangle) instead.

Definition at line 813 of file qrect.h.

Referenced by intersected().

{
    return *this & r;
}

intersected()

QRectF QRectF::intersected ( const QRectF &  rectangle ) const

inline

Returns the intersection of this rectangle and the given rectangle.

Since

4.2

Note that {r.intersected(s)} is equivalent to {r & s}.

See also

intersects(), united(), operator&=()

Definition at line 818 of file qrect.h.

Referenced by QTextEditPrivate::_q_repaintContents(), QPlainTextEditPrivate::_q_repaintContents(), QBlitterPaintEnginePrivate::clipAndDrawPixmap(), QTextLayout::draw(), and QPainterPrivate::draw_helper().

{
    return intersect(r);
}

intersects()

bool QRectF::intersects

(

const QRectF &

rectangle

)

const

Returns true if this rectangle intersects with the given rectangle (i.

e. there is a non-empty area of overlap between them), otherwise returns false.

The intersection rectangle can be retrieved using the intersected() function.

See also

contains()

Definition at line 2744 of file qrect.cpp.

Referenced by QGraphicsTextItemPrivate::_q_update(), QPathClipper::clip(), QGraphicsItem::collidesWithPath(), QGraphicsSceneIndexRectIntersector::intersect(), QGraphicsSceneIndexPointIntersector::intersect(), QGraphicsItem::scroll(), QTextBrowserPrivate::setSource(), and QPainterPath::toFillPolygons().

{
    qreal l1 = xp;
    qreal r1 = xp;
    if (w < 0)
        l1 += w;
    else
        r1 += w;
    if (l1 == r1) // null rect
        return false;

    qreal l2 = r.xp;
    qreal r2 = r.xp;
    if (r.w < 0)
        l2 += r.w;
    else
        r2 += r.w;
    if (l2 == r2) // null rect
        return false;

    if (l1 >= r2 || l2 >= r1)
        return false;

    qreal t1 = yp;
    qreal b1 = yp;
    if (h < 0)
        t1 += h;
    else
        b1 += h;
    if (t1 == b1) // null rect
        return false;

    qreal t2 = r.yp;
    qreal b2 = r.yp;
    if (r.h < 0)
        t2 += r.h;
    else
        b2 += r.h;
    if (t2 == b2) // null rect
        return false;

    if (t1 >= b2 || t2 >= b1)
        return false;

    return true;
}

isEmpty()

bool QRectF::isEmpty ( ) const

inline

Returns true if the rectangle is empty, otherwise returns false.

An empty rectangle has width() <= 0 or height() <= 0. An empty rectangle is not valid (i.e., isEmpty() == !isValid()).

Use the normalized() function to retrieve a rectangle where the corners are swapped.

See also

isNull(), isValid(), normalized()

Definition at line 658 of file qrect.h.

Referenced by QBlitterPaintEnginePrivate::clipAndDrawPixmap(), QGraphicsItem::clipPath(), QPixmapConvolutionFilter::draw(), QPainterPrivate::draw_helper(), QRasterPaintEngine::drawEllipse(), QPdfEngine::drawImage(), QRasterPaintEngine::drawImage(), QGraphicsScenePrivate::drawItemHelper(), QPdfEngine::drawPixmap(), QRasterPaintEngine::drawRects(), drawTexture(), QPainter::drawTiledPixmap(), QRasterPaintEngine::fill(), QRasterPaintEngine::fillRect(), QGraphicsView::fitInView(), QGraphicsScenePrivate::markDirty(), QBlittablePixmapData::paintEngine(), QDashStroker::processCurrentSubpath(), QGraphicsScenePrivate::processDirtyItemsRecursive(), QPainter::setClipRect(), QSvgNode::transformedBounds(), QGraphicsScene::update(), QGraphicsItem::update(), QPaintBufferPrivate::updateBoundingRect(), QGraphicsViewPrivate::updateRectF(), QGraphicsViewPrivate::updateRegion(), and ShaderEffect::updateRenderTargets().

{ return w <= 0. || h <= 0.; }

isNull()

bool QRectF::isNull ( ) const

inline

Returns true if the rectangle is a null rectangle, otherwise returns false.

A null rectangle has both the width and the height set to 0. A null rectangle is also empty, and hence not valid.

See also

isEmpty(), isValid()

Definition at line 655 of file qrect.h.

Referenced by QPainterPath::addEllipse(), QPainterPath::addRect(), QPainterPath::addRoundedRect(), QPainterPath::addRoundRect(), QPainterPath::arcMoveTo(), QPainterPath::arcTo(), convolute(), QVGPixmapConvolutionFilter::draw(), QVGPixmapColorizeFilter::draw(), QGLPixmapFilter< QPixmapBlurFilter >::draw(), QVGPixmapDropShadowFilter::draw(), QVGPixmapBlurFilter::draw(), QPixmapConvolutionFilter::draw(), QPixmapBlurFilter::draw(), QPixmapColorizeFilter::draw(), QTextLayout::draw(), QGraphicsItem::ensureVisible(), QGraphicsSceneBspTreeIndexPrivate::estimateItems(), QGraphicsView::fitInView(), QSystemTrayIconPrivate::geometry_sys(), QGraphicsItem::isObscured(), QSvgTinyDocument::mapSourceToTarget(), QGraphicsScenePrivate::markDirty(), operator|(), qt_curves_for_arc(), qt_find_ellipse_coords(), QGraphicsScene::render(), QGraphicsView::render(), QGraphicsItem::scroll(), QGraphicsScene::setSceneRect(), QGraphicsView::setSceneRect(), QGraphicsScene::update(), and QGraphicsItem::update().

{ return w == 0. && h == 0.; }

isValid()

bool QRectF::isValid ( ) const

inline

Returns true if the rectangle is valid, otherwise returns false.

A valid rectangle has a width() > 0 and height() > 0. Note that non-trivial operations like intersections are not defined for invalid rectangles. A valid rectangle is not empty (i.e., isValid() == !isEmpty()).

See also

isNull(), isEmpty(), normalized()

Definition at line 661 of file qrect.h.

Referenced by QTextEditPrivate::_q_repaintContents(), QPlainTextEditPrivate::_q_repaintContents(), QGraphicsTextItemPrivate::_q_update(), QTextLayoutStruct::addUpdateRectForFloat(), QTextControl::anchorPosition(), clipIfValid(), QTextDocumentLayout::documentChanged(), QTextControlPrivate::dragLeaveEvent(), QTextControlPrivate::dragMoveEvent(), QTextDocumentLayout::draw(), QTextLayout::draw(), QTextDocumentLayoutPrivate::drawBlock(), QTextDocument::drawContents(), QTextControl::drawContents(), QTextDocumentLayoutPrivate::drawFlow(), QTextDocumentLayoutPrivate::drawFrame(), QPlainTextEditPrivate::ensureVisible(), QTextDocumentLayoutPrivate::layoutBlock(), QTextDocumentLayoutPrivate::layoutFrame(), QTextControl::selectionRect(), and QDeclarativeTextEdit::updateImgCache().

{ return w > 0. && h > 0.; }

left()

qreal QRectF::left ( ) const

inline

Returns the x-coordinate of the rectangle's left edge.

Equivalent to x().

See also

setLeft(), topLeft(), bottomLeft()

Definition at line 525 of file qrect.h.

Referenced by _q_boundGeometryToSizeConstraints(), QPrintPreviewWidgetPrivate::_q_fit(), QGL2PEXVertexArray::addQuad(), QGL2PEXVertexArray::addRect(), addSelectedRegionsToPath(), QmlJSDebugger::QDeclarativeViewInspector::adjustToScreenBoundaries(), QRenderRule::borderClip(), QGraphicsSceneBspTree::climbTree(), QBlitterPaintEnginePrivate::clipAndDrawPixmap(), QOpenGLPaintEnginePrivate::copyDrawable(), QPlainTextEditControl::cursorRect(), QGraphicsSceneBspTree::debug(), QTextDocumentLayoutPrivate::drawBlock(), QTextDocumentLayoutPrivate::drawBorder(), QOpenGLPaintEnginePrivate::drawFastRect(), QTextDocumentLayoutPrivate::drawFrame(), QTextDocumentLayoutPrivate::drawFrameDecoration(), QRasterPaintEngine::drawImage(), QOpenGLPaintEnginePrivate::drawImageAsPath(), QTextDocumentLayoutPrivate::drawListItem(), QGL2PaintEngineEx::drawPixmap(), QGL2PaintEngineExPrivate::drawPixmapFragments(), QPaintEngineEx::drawRoundedRect(), QTextDocumentLayoutPrivate::drawTableCell(), QGL2PaintEngineEx::drawTexture(), drawTexture(), QOpenGLPaintEnginePrivate::drawTiledImageAsPath(), QWin32PrintEngine::drawTiledPixmap(), QOutlineMapper::endOutline(), QGraphicsView::ensureVisible(), QGL2PaintEngineExPrivate::fill(), QIntersectionFinder::hasIntersections(), QTextDocumentLayoutPrivate::hitTest(), QGraphicsSceneBspTree::initialize(), QPainterPath::intersects(), needsPerspectiveClipping(), QMatrix4x4::ortho(), QDeclarativeParticlesPainter::paint(), printPage(), QDashStroker::processCurrentSubpath(), QGLPixmapDropShadowFilter::processGL(), qDrawBorder(), QRectF_intersects(), qSubImage(), qt_isect_curve_horizontal(), qt_isect_curve_vertical(), qt_painterpath_check_crossing(), qt_painterpath_isect_line_rect(), qt_scale_image_16bit(), qt_scale_image_32bit(), qt_transform_image(), QGraphicsViewPrivate::recalculateContentSize(), QGraphicsScene::render(), QGraphicsView::render(), QGL2PaintEngineExPrivate::resetClipIfNeeded(), QmlJSDebugger::resizeRect(), QVGPaintEnginePrivate::roundedRectPath(), QGLEllipseMaskGenerator::screenRect(), QTextControl::selectionRect(), QPainter::setClipRect(), QGraphicsAnchorLayoutPrivate::setItemsGeometries(), QDeclarativeTextPrivate::setupTextLayout(), QAlphaPaintEnginePrivate::toRect(), QTest::toString(), QPaintBufferPrivate::updateBoundingRect(), ShaderEffectItem::updateGeometry(), QSGGeometry::updateRectGeometry(), ShaderEffect::updateRenderTargets(), QSGGeometry::updateTexturedRectGeometry(), visualRect(), QGraphicsWidget::windowFrameSectionAt(), and QPicturePaintEngine::writeCmdLength().

{ return xp; }

moveBottom()

void QRectF::moveBottom ( qreal  y )

inline

Moves the rectangle vertically, leaving the rectangle's bottom edge at the given y coordinate.

The rectangle's size is unchanged.

See also

bottom(), setBottom(), moveTop()

Definition at line 695 of file qrect.h.

Referenced by moveBottomLeft(), and moveBottomRight().

{ yp = pos - h; }

moveBottomLeft()

void QRectF::moveBottomLeft ( const QPointF &  position )

inline

Moves the rectangle, leaving the bottom-left corner at the given position.

The rectangle's size is unchanged.

See also

setBottomLeft(), moveBottom(), moveLeft()

Definition at line 701 of file qrect.h.

Referenced by QBlittablePixmapData::markRasterOverlay().

{ moveLeft(p.x()); moveBottom(p.y()); }

moveBottomRight()

void QRectF::moveBottomRight ( const QPointF &  position )

inline

Moves the rectangle, leaving the bottom-right corner at the given position.

The rectangle's size is unchanged.

See also

setBottomRight(), moveBottom(), moveRight()

Definition at line 703 of file qrect.h.

{ moveRight(p.x()); moveBottom(p.y()); }

moveCenter()

void QRectF::moveCenter ( const QPointF &  position )

inline

Moves the rectangle, leaving the center point at the given position.

The rectangle's size is unchanged.

See also

center()

Definition at line 705 of file qrect.h.

Referenced by QApplication::notify(), QTouchEvent::TouchPoint::setPos(), QTouchEvent::TouchPoint::setScenePos(), QTouchEvent::TouchPoint::setScreenPos(), QApplicationPrivate::translateTouchEvent(), and QApplicationPrivate::updateTouchPointsForWidget().

{ xp = p.x() - w/2; yp = p.y() - h/2; }

moveLeft()

void QRectF::moveLeft ( qreal  x )

inline

Moves the rectangle horizontally, leaving the rectangle's left edge at the given x coordinate.

The rectangle's size is unchanged.

See also

left(), setLeft(), moveRight()

Definition at line 689 of file qrect.h.

Referenced by addSelectedRegionsToPath(), moveBottomLeft(), moveTopLeft(), and QDeclarativeRectFValueType::setX().

{ xp = pos; }

moveRight()

void QRectF::moveRight ( qreal  x )

inline

Moves the rectangle horizontally, leaving the rectangle's right edge at the given x coordinate.

The rectangle's size is unchanged.

See also

right(), setRight(), moveLeft()

Definition at line 693 of file qrect.h.

Referenced by moveBottomRight(), moveTopRight(), and visualRect().

{ xp = pos - w; }

moveTo() [1/2]

void QRectF::moveTo ( qreal  x, qreal  y  )

inline

Moves the rectangle, leaving the top-left corner at the given position (x, y).

The rectangle's size is unchanged.

See also

translate(), moveTopLeft()

Definition at line 728 of file qrect.h.

Referenced by convolute(), and QGraphicsProxyWidgetPrivate::updateProxyGeometryFromWidget().

{
    xp = ax;
    yp = ay;
}

moveTo() [2/2]

void QRectF::moveTo ( const QPointF &  position )

inline

Moves the rectangle, leaving the top-left corner at the given position.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

Definition at line 734 of file qrect.h.

{
    xp = p.x();
    yp = p.y();
}

moveTop()

void QRectF::moveTop ( qreal  y )

inline

Moves the rectangle vertically, leaving the rectangle's top line at the given y coordinate.

The rectangle's size is unchanged.

See also

top(), setTop(), moveBottom()

Definition at line 691 of file qrect.h.

Referenced by QPrintPreviewWidgetPrivate::_q_fit(), addSelectedRegionsToPath(), moveTopLeft(), moveTopRight(), and QDeclarativeRectFValueType::setY().

{ yp = pos; }

moveTopLeft()

void QRectF::moveTopLeft ( const QPointF &  position )

inline

Moves the rectangle, leaving the top-left corner at the given position.

The rectangle's size is unchanged.

See also

setTopLeft(), moveTop(), moveLeft()

Definition at line 697 of file qrect.h.

Referenced by QTextDocumentLayout::blockBoundingRect(), and QGraphicsWidget::setGeometry().

{ moveLeft(p.x()); moveTop(p.y()); }

moveTopRight()

void QRectF::moveTopRight ( const QPointF &  position )

inline

Moves the rectangle, leaving the top-right corner at the given position.

The rectangle's size is unchanged.

See also

setTopRight(), moveTop(), moveRight()

Definition at line 699 of file qrect.h.

{ moveRight(p.x()); moveTop(p.y()); }

normalized()

QRectF QRectF::normalized

(

)

const

Returns a normalized rectangle; i.e., a rectangle that has a non-negative width and height.

If width() < 0 the function swaps the left and right corners, and it swaps the top and bottom corners if height() < 0.

See also

isValid(), isEmpty()

Definition at line 1822 of file qrect.cpp.

Referenced by QPainterPath::addRoundedRect(), QPainterPath::addRoundRect(), QPainter::drawArc(), QPainter::drawChord(), QPainter::drawEllipse(), QRasterPaintEngine::drawImage(), QPainter::drawPie(), QRasterPaintEngine::drawRects(), QRasterPaintEngine::drawTiledPixmap(), QRasterPaintEngine::fill(), QRasterPaintEngine::fillRect(), QPainterPath::intersects(), QRasterPaintEnginePrivate::isUnclipped(), and QMacPixmapData::macCreatePixels().

{
    QRectF r = *this;
    if (r.w < 0) {
        r.xp += r.w;
        r.w = -r.w;
    }
    if (r.h < 0) {
        r.yp += r.h;
        r.h = -r.h;
    }
    return r;
}

operator &()

QRectF QRectF::operator&

(

const QRectF &

rectangle

)

const

Returns the intersection of this rectangle and the given rectangle.

Returns an empty rectangle if there is no intersection.

See also

operator&=(), intersected()

Referenced by operator|().

operator &=()

QRectF& QRectF::operator&=

(

const QRectF &

r

)

Referenced by operator|=().

operator|()

QRectF QRectF::operator|

(

const QRectF &

rectangle

)

const

Returns the bounding rectangle of this rectangle and the given rectangle.

See also

united(), operator|=()

Definition at line 2572 of file qrect.cpp.

{
    if (isNull())
        return r;
    if (r.isNull())
        return *this;

    qreal left = xp;
    qreal right = xp;
    if (w < 0)
        left += w;
    else
        right += w;

    if (r.w < 0) {
        left = qMin(left, r.xp + r.w);
        right = qMax(right, r.xp);
    } else {
        left = qMin(left, r.xp);
        right = qMax(right, r.xp + r.w);
    }

    qreal top = yp;
    qreal bottom = yp;
    if (h < 0)
        top += h;
    else
        bottom += h;

    if (r.h < 0) {
        top = qMin(top, r.yp + r.h);
        bottom = qMax(bottom, r.yp);
    } else {
        top = qMin(top, r.yp);
        bottom = qMax(bottom, r.yp + r.h);
    }

    return QRectF(left, top, right - left, bottom - top);
}

operator|=()

QRectF & QRectF::operator|= ( const QRectF &  rectangle )

inline

Unites this rectangle with the given rectangle.

See also

united(), operator|()

Definition at line 801 of file qrect.h.

{
    *this = *this | r;
    return *this;
}

right()

qreal QRectF::right ( ) const

inline

Returns the x-coordinate of the rectangle's right edge.

See also

setRight(), topRight(), bottomRight()

Definition at line 527 of file qrect.h.

Referenced by _q_boundGeometryToSizeConstraints(), QPrintPreviewWidgetPrivate::_q_fit(), QGL2PEXVertexArray::addQuad(), QGL2PEXVertexArray::addRect(), QmlJSDebugger::QDeclarativeViewInspector::adjustToScreenBoundaries(), QRenderRule::borderClip(), QDeclarativeTextInput::boundingRect(), QDeclarativeTextEdit::boundingRect(), QGraphicsSceneBspTree::climbTree(), QBlitterPaintEnginePrivate::clipAndDrawPixmap(), QTextDocumentLayoutPrivate::drawBorder(), QOpenGLPaintEnginePrivate::drawFastRect(), QTextDocumentLayoutPrivate::drawFrame(), QRasterPaintEngine::drawImage(), QTextDocumentLayoutPrivate::drawListItem(), QGL2PaintEngineEx::drawPixmap(), QGL2PaintEngineExPrivate::drawPixmapFragments(), QPaintEngineEx::drawRoundedRect(), QGL2PaintEngineEx::drawTexture(), drawTexture(), QOpenGLPaintEngine::drawTextureRect(), QOutlineMapper::endOutline(), QGraphicsView::ensureVisible(), QGL2PaintEngineExPrivate::fill(), QBlitterPaintEngine::fillRect(), QIntersectionFinder::hasIntersections(), QTextDocumentLayoutPrivate::hitTest(), QGraphicsSceneBspTree::initialize(), QPainterPath::intersects(), needsPerspectiveClipping(), QMatrix4x4::ortho(), QDashStroker::processCurrentSubpath(), qSubImage(), qt_isect_curve_horizontal(), qt_isect_curve_vertical(), qt_painterpath_check_crossing(), qt_painterpath_isect_line_rect(), qt_scale_image_16bit(), qt_scale_image_32bit(), qt_transform_image(), QGraphicsViewPrivate::recalculateContentSize(), QGL2PaintEngineExPrivate::resetClipIfNeeded(), QmlJSDebugger::resizeRect(), QVGPaintEnginePrivate::roundedRectPath(), QGLEllipseMaskGenerator::screenRect(), QTextControl::selectionRect(), QPainter::setClipRect(), QGraphicsAnchorLayoutPrivate::setItemsGeometries(), QDeclarativeTextPrivate::setupTextLayout(), toAlignedRect_positive(), toNormalizedFillRect(), QAlphaPaintEnginePrivate::toRect(), QTest::toString(), QPaintBufferPrivate::updateBoundingRect(), QSGGeometry::updateRectGeometry(), ShaderEffect::updateRenderTargets(), QSGGeometry::updateTexturedRectGeometry(), visualRect(), QGraphicsWidget::windowFrameSectionAt(), and QPicturePaintEngine::writeCmdLength().

{ return xp + w; }

setBottom()

void QRectF::setBottom ( qreal  y )

inline

Sets the bottom edge of the rectangle to the given y coordinate.

May change the height, but will never change the top edge of the rectangle.

See also

bottom(), moveBottom()

Definition at line 676 of file qrect.h.

Referenced by QmlJSDebugger::QDeclarativeViewInspector::adjustToScreenBoundaries(), blitTexture(), QTextDocumentLayoutPrivate::drawBorder(), drawTexture(), QTextDocumentLayoutPrivate::layoutBlock(), QGraphicsSceneBspTree::rectForIndex(), QmlJSDebugger::resizeRect(), setBottomLeft(), setBottomRight(), and QGraphicsAnchorLayoutPrivate::setItemsGeometries().

{ h = pos - yp; }

setBottomLeft()

void QRectF::setBottomLeft ( const QPointF &  position )

inline

Set the bottom-left corner of the rectangle to the given position.

May change the size, but will never change the top-right corner of the rectangle.

See also

bottomLeft(), moveBottomLeft()

Definition at line 682 of file qrect.h.

{ setLeft(p.x()); setBottom(p.y()); }

setBottomRight()

void QRectF::setBottomRight ( const QPointF &  position )

inline

Set the bottom-right corner of the rectangle to the given position.

May change the size, but will never change the top-left corner of the rectangle.

See also

bottomRight(), moveBottomRight()

Definition at line 684 of file qrect.h.

{ setRight(p.x()); setBottom(p.y()); }

setCoords()

void QRectF::setCoords ( qreal  x1, qreal  y1, qreal  x2, qreal  y2  )

inline

Sets the coordinates of the rectangle's top-left corner to (x1, y1), and the coordinates of its bottom-right corner to (x2, y2).

See also

getCoords() setRect()

Definition at line 770 of file qrect.h.

Referenced by QPathClipper::pathToRect(), and QPicturePaintEngine::writeCmdLength().

{
    xp = xp1;
    yp = yp1;
    w = xp2 - xp1;
    h = yp2 - yp1;
}

setHeight()

void QRectF::setHeight ( qreal  height )

inline

Sets the height of the rectangle to the given height.

The bottom edge is changed, but not the top one.

See also

height(), setSize()

Definition at line 787 of file qrect.h.

Referenced by _q_boundGeometryToSizeConstraints(), QSvgText::draw(), QTextDocumentLayoutPrivate::drawFrameDecoration(), QDeclarativeRectFValueType::setHeight(), QDeclarativeTextPrivate::setupTextLayout(), and QGraphicsWidget::windowFrameSectionAt().

{ this->h = ah; }

setLeft()

void QRectF::setLeft ( qreal  x )

inline

Sets the left edge of the rectangle to the given x coordinate.

May change the width, but will never change the right edge of the rectangle.

Equivalent to setX().

See also

left(), moveLeft()

Definition at line 670 of file qrect.h.

Referenced by QPrintPreviewWidgetPrivate::_q_fit(), QmlJSDebugger::QDeclarativeViewInspector::adjustToScreenBoundaries(), blitTexture(), QPlainTextEditControl::cursorRect(), drawTexture(), QGraphicsSceneBspTree::rectForIndex(), QmlJSDebugger::resizeRect(), QTextControl::selectionRect(), setBottomLeft(), QTextControl::setExtraSelections(), QGraphicsAnchorLayoutPrivate::setItemsGeometries(), and setTopLeft().

{ qreal diff = pos - xp; xp += diff; w -= diff; }

setRect()

void QRectF::setRect ( qreal  x, qreal  y, qreal  width, qreal  height  )

inline

Sets the coordinates of the rectangle's top-left corner to (x, y), and its size to the given width and height.

See also

getRect(), setCoords()

Definition at line 754 of file qrect.h.

Referenced by _q_boundGeometryToSizeConstraints(), QGraphicsSceneBspTree::initialize(), operator>>(), QGraphicsScene::render(), QGraphicsView::render(), and QmlJSDebugger::ZoomTool::scaleView().

{
    this->xp = ax;
    this->yp = ay;
    this->w = aaw;
    this->h = aah;
}

setRight()

void QRectF::setRight ( qreal  x )

inline

Sets the right edge of the rectangle to the given x coordinate.

May change the width, but will never change the left edge of the rectangle.

See also

right(), moveRight()

Definition at line 672 of file qrect.h.

Referenced by QPrintPreviewWidgetPrivate::_q_fit(), QTextControlPrivate::_q_updateBlock(), QmlJSDebugger::QDeclarativeViewInspector::adjustToScreenBoundaries(), blitTexture(), QDeclarativeTextInput::boundingRect(), QDeclarativeTextEdit::boundingRect(), QTextLayout::draw(), QTextDocumentLayoutPrivate::drawBlock(), drawTexture(), QGraphicsSceneBspTree::rectForIndex(), QmlJSDebugger::resizeRect(), QTextControl::selectionRect(), setBottomRight(), QGraphicsAnchorLayoutPrivate::setItemsGeometries(), and setTopRight().

{ w = pos - xp; }

setSize()

void QRectF::setSize ( const QSizeF &  size )

inline

Sets the size of the rectangle to the given size.

The top-left corner is not moved.

See also

size(), setWidth(), setHeight()

Definition at line 790 of file qrect.h.

Referenced by QGraphicsTextItemPrivate::_q_updateBoundingRect(), QGraphicsWidget::setGeometry(), QGraphicsTextItemPrivate::textControl(), QApplicationPrivate::translateTouchEvent(), QGraphicsSvgItemPrivate::updateDefaultSize(), and QGraphicsProxyWidgetPrivate::updateProxyGeometryFromWidget().

{
    w = s.width();
    h = s.height();
}

setTop()

void QRectF::setTop ( qreal  y )

inline

Sets the top edge of the rectangle to the given y coordinate.

May change the height, but will never change the bottom edge of the rectangle.

Equivalent to setY().

See also

top(), moveTop()

Definition at line 674 of file qrect.h.

Referenced by _q_boundGeometryToSizeConstraints(), QmlJSDebugger::QDeclarativeViewInspector::adjustToScreenBoundaries(), blitTexture(), QTextDocumentLayoutPrivate::drawBorder(), drawTexture(), QTextDocumentLayoutPrivate::layoutBlock(), QGraphicsSceneBspTree::rectForIndex(), QmlJSDebugger::resizeRect(), QGraphicsAnchorLayoutPrivate::setItemsGeometries(), setTopLeft(), and setTopRight().

{ qreal diff = pos - yp; yp += diff; h -= diff; }

setTopLeft()

void QRectF::setTopLeft ( const QPointF &  position )

inline

Set the top-left corner of the rectangle to the given position.

May change the size, but will never change the bottom-right corner of the rectangle.

See also

topLeft(), moveTopLeft()

Definition at line 678 of file qrect.h.

{ setLeft(p.x()); setTop(p.y()); }

setTopRight()

void QRectF::setTopRight ( const QPointF &  position )

inline

Set the top-right corner of the rectangle to the given position.

May change the size, but will never change the bottom-left corner of the rectangle.

See also

topRight(), moveTopRight()

Definition at line 680 of file qrect.h.

{ setRight(p.x()); setTop(p.y()); }

setWidth()

void QRectF::setWidth ( qreal  width )

inline

Sets the width of the rectangle to the given width.

The right edge is changed, but not the left one.

See also

width(), setSize()

Definition at line 784 of file qrect.h.

Referenced by _q_boundGeometryToSizeConstraints(), QPlainTextDocumentLayout::blockBoundingRect(), QTextDocumentLayoutPrivate::drawFrameDecoration(), QPlainTextEdit::paintEvent(), QTextControl::setExtraSelections(), and QDeclarativeRectFValueType::setWidth().

{ this->w = aw; }

setX()

void QRectF::setX ( qreal  x )

inline

Sets the left edge of the rectangle to the given x coordinate.

May change the width, but will never change the right edge of the rectangle.

Equivalent to setLeft().

See also

x(), setY(), setTopLeft()

Definition at line 536 of file qrect.h.

{ setLeft(pos); }

setY()

void QRectF::setY ( qreal  y )

inline

Sets the top edge of the rectangle to the given y coordinate.

May change the height, but will never change the bottom edge of the rectangle.

Equivalent to setTop().

See also

y(), setX(), setTopLeft()

Definition at line 537 of file qrect.h.

{ setTop(pos); }

size()

QSizeF QRectF::size ( ) const

inline

Returns the size of the rectangle.

See also

setSize(), width(), height()

Definition at line 713 of file qrect.h.

Referenced by QGraphicsTextItemPrivate::_q_updateBoundingRect(), CapabilitiesToStateMask::canBlitterDrawPixmap(), QGridLayoutEngine::cellRect(), QBlitterPaintEnginePrivate::clipAndDrawPixmap(), QVGPixmapConvolutionFilter::draw(), QVGPixmapColorizeFilter::draw(), QVGPixmapDropShadowFilter::draw(), QVGPixmapBlurFilter::draw(), QDirectFBPaintEngine::drawImage(), QX11PaintEngine::drawImage(), QVGPaintEngine::drawImage(), QDirectFBPaintEngine::drawPixmap(), QWin32PrintEngine::drawPixmap(), QRasterPaintEngine::drawPixmap(), QVGPaintEngine::drawPixmapFragments(), drawTexture(), QPainter::drawTiledPixmap(), drawVGImage(), QBlitterPaintEngine::fillRect(), ShaderEffectItem::geometryChanged(), QDeclarativePathViewPrivate::itemGeometryChanged(), QDeclarativeBasePositionerPrivate::itemGeometryChanged(), QSvgTinyDocument::mapSourceToTarget(), QPainterPath::operator==(), QGraphicsItemEffectSourcePrivate::paddedEffectRect(), QStaticTextPrivate::paintText(), QGridLayoutEngine::setGeometries(), QGraphicsLayoutItem::setGeometry(), QGraphicsWidget::setGeometry(), QFontMetricsF::size(), QGraphicsSvgItemPrivate::updateDefaultSize(), QGraphicsWidgetPrivate::windowFrameMouseMoveEvent(), and QGraphicsWidget::~QGraphicsWidget().

{ return QSizeF(w, h); }

toAlignedRect()

QRect QRectF::toAlignedRect

(

)

const

Returns a QRect based on the values of this rectangle that is the smallest possible integer rectangle that completely contains this rectangle.

Since

4.3

See also

toRect()

Definition at line 2817 of file qrect.cpp.

Referenced by QTextEditPrivate::_q_repaintContents(), QPlainTextEditPrivate::_q_repaintContents(), QFontMetrics::boundingRect(), QGLPathMaskGenerator::computeScreenRect(), QGLLineMaskGenerator::computeScreenRect(), QGLRectMaskGenerator::computeScreenRect(), convolute(), QPixmapBlurFilter::draw(), QPixmapColorizeFilter::draw(), QPainterPrivate::draw_helper(), QX11PaintEngine::drawEllipse(), QRasterPaintEngine::drawImage(), QGraphicsScenePrivate::drawItemHelper(), QRasterPaintEngine::drawPixmap(), QX11PaintEngine::drawRects(), QGraphicsItemPrivate::effectiveBoundingRect(), QRasterPaintEnginePrivate::isUnclipped(), QGraphicsViewPrivate::mapToViewRect(), QGraphicsItemEffectSourcePrivate::paddedEffectRect(), QWidgetEffectSourcePrivate::pixmap(), QGLPixmapDropShadowFilter::processGL(), QX11PixmapData::transformed(), QImage::transformed(), QGraphicsViewPrivate::updateRectF(), and QGraphicsViewPrivate::updateRegion().

{
    int xmin = int(qFloor(xp));
    int xmax = int(qCeil(xp + w));
    int ymin = int(qFloor(yp));
    int ymax = int(qCeil(yp + h));
    return QRect(xmin, ymin, xmax - xmin, ymax - ymin);
}

top()

qreal QRectF::top ( ) const

inline

Returns the y-coordinate of the rectangle's top edge.

Equivalent to y().

See also

setTop(), topLeft(), topRight()

Definition at line 526 of file qrect.h.

Referenced by QPlainTextEditPrivate::_q_adjustScrollbars(), _q_boundGeometryToSizeConstraints(), QPrintPreviewWidgetPrivate::_q_fit(), QGL2PEXVertexArray::addQuad(), QGL2PEXVertexArray::addRect(), addSelectedRegionsToPath(), QmlJSDebugger::QDeclarativeViewInspector::adjustToScreenBoundaries(), QTextControl::anchorPosition(), QRenderRule::borderClip(), QGraphicsSceneBspTree::climbTree(), QBlitterPaintEnginePrivate::clipAndDrawPixmap(), QGraphicsSceneBspTree::debug(), QTextDocumentLayoutPrivate::drawBlock(), QTextDocumentLayoutPrivate::drawBorder(), QOpenGLPaintEnginePrivate::drawFastRect(), QTextDocumentLayoutPrivate::drawFrame(), QTextDocumentLayoutPrivate::drawFrameDecoration(), QRasterPaintEngine::drawImage(), QOpenGLPaintEnginePrivate::drawImageAsPath(), QGL2PaintEngineEx::drawPixmap(), QGL2PaintEngineExPrivate::drawPixmapFragments(), QPaintEngineEx::drawRoundedRect(), QTextDocumentLayoutPrivate::drawTableCell(), QGL2PaintEngineEx::drawTexture(), drawTexture(), QOpenGLPaintEnginePrivate::drawTiledImageAsPath(), QWin32PrintEngine::drawTiledPixmap(), QOutlineMapper::endOutline(), QPlainTextEditPrivate::ensureVisible(), QGraphicsView::ensureVisible(), QScriptEdit::extraAreaPaintEvent(), QGL2PaintEngineExPrivate::fill(), QIntersectionFinder::hasIntersections(), QPlainTextEditControl::hitTest(), QTextDocumentLayoutPrivate::hitTest(), QGraphicsSceneBspTree::initialize(), QPainterPath::intersects(), QTextDocumentLayoutPrivate::layoutBlock(), needsPerspectiveClipping(), QMatrix4x4::ortho(), QTextEditPrivate::pageUpDown(), QPlainTextEditPrivate::pageUpDown(), QDeclarativeParticlesPainter::paint(), QPlainTextEdit::paintEvent(), printPage(), QDashStroker::processCurrentSubpath(), QGLPixmapDropShadowFilter::processGL(), qMapGradientToRect(), QRectF_intersects(), qSubImage(), qt_isect_curve_horizontal(), qt_isect_curve_vertical(), qt_painterpath_check_crossing(), qt_painterpath_isect_line_rect(), qt_scale_image_16bit(), qt_scale_image_32bit(), qt_transform_image(), QRasterizer::rasterize(), QGraphicsViewPrivate::recalculateContentSize(), QGraphicsScene::render(), QGraphicsView::render(), QGL2PaintEngineExPrivate::resetClipIfNeeded(), QmlJSDebugger::resizeRect(), QVGPaintEnginePrivate::roundedRectPath(), QGLEllipseMaskGenerator::screenRect(), QPainter::setClipRect(), QGraphicsAnchorLayoutPrivate::setItemsGeometries(), QTextBrowserPrivate::setSource(), QAlphaPaintEnginePrivate::toRect(), QTest::toString(), QPaintBufferPrivate::updateBoundingRect(), ShaderEffectItem::updateGeometry(), QSGGeometry::updateRectGeometry(), ShaderEffect::updateRenderTargets(), QSGGeometry::updateTexturedRectGeometry(), QGraphicsWidget::windowFrameSectionAt(), and QPicturePaintEngine::writeCmdLength().

{ return yp; }

topLeft()

QPointF QRectF::topLeft ( ) const

inline

Returns the position of the rectangle's top-left corner.

See also

setTopLeft(), top(), left()

Definition at line 539 of file qrect.h.

Referenced by QPainterPath::contains(), QVGPixmapConvolutionFilter::draw(), QVGPixmapColorizeFilter::draw(), QVGPixmapDropShadowFilter::draw(), QVGPixmapBlurFilter::draw(), QTextDocumentLayoutPrivate::drawBlock(), QTextDocumentLayoutPrivate::drawFrameDecoration(), QVGPaintEngine::drawImage(), QRasterPaintEngine::drawImage(), QTextDocumentLayoutPrivate::drawListItem(), QWin32PrintEngine::drawPixmap(), QRasterPaintEngine::drawPixmap(), QVGPaintEngine::drawPixmapFragments(), QVGPaintEngine::drawRects(), QRasterPaintEngine::drawRects(), QTextDocumentLayoutPrivate::drawTableCell(), QRasterPaintEngine::drawTiledPixmap(), QPainter::drawTiledPixmap(), drawVGImage(), QPlainTextEditPrivate::ensureVisible(), QRasterPaintEngine::fill(), fillBackground(), QDirectFBPaintEngine::fillRect(), QVGPaintEngine::fillRect(), QRasterPaintEngine::fillRect(), QIntersectionFinder::hasIntersections(), QTextDocumentLayoutPrivate::hitTest(), QOpenGLPaintEnginePrivate::isFastRect(), QGraphicsSceneIndexPrivate::itemCollidesWithPath(), QGraphicsView::mapFromScene(), QMatrix4x4::mapRect(), QGraphicsViewPrivate::mapToScene(), QLabel::paintEvent(), QGraphicsWidget::paintWindowFrame(), QGraphicsItemEffectSourcePrivate::pixmap(), qt_mapRect_non_normalizing(), QGLEllipseMaskGenerator::screenRect(), QGraphicsLayoutItem::setGeometry(), QGraphicsWidget::setGeometry(), QGraphicsProxyWidgetPrivate::updateProxyGeometryFromWidget(), and QGraphicsWidgetPrivate::windowFrameMouseMoveEvent().

{ return QPointF(xp, yp); }

topRight()

QPointF QRectF::topRight ( ) const

inline

Returns the position of the rectangle's top-right corner.

See also

setTopRight(), top(), right()

Definition at line 541 of file qrect.h.

Referenced by QPainterPath::contains(), QRasterPaintEngine::drawImage(), QVGPaintEngine::drawRects(), QRasterPaintEngine::drawRects(), QRasterPaintEngine::drawTiledPixmap(), QRasterPaintEngine::fill(), QVGPaintEngine::fillRect(), QRasterPaintEngine::fillRect(), QGraphicsView::mapFromScene(), QMatrix4x4::mapRect(), and QGraphicsViewPrivate::mapToScene().

{ return QPointF(xp+w, yp); }

toRect()

QRect QRectF::toRect ( ) const

inline

Returns a QRect based on the values of this rectangle.

Note that the coordinates in the returned rectangle are rounded to the nearest integer.

See also

QRectF(), toAlignedRect()

Definition at line 845 of file qrect.h.

Referenced by QTextEditPrivate::_q_ensureVisible(), QDirectFbBlitter::alphaFillRect(), QDirectFBPaintEnginePrivate::blit(), QVGPaintEngine::clip(), QOpenGLPaintEngine::clip(), QPainter::clipRegion(), clipTransformIsSimple(), QVGPixmapConvolutionFilter::draw(), QVGPixmapColorizeFilter::draw(), QVGPixmapDropShadowFilter::draw(), QVGPixmapBlurFilter::draw(), QPixmapConvolutionFilter::draw(), QTextDocumentLayoutPrivate::drawBorder(), QPSPrintEngine::drawImage(), QPdfEngine::drawImage(), QVGPaintEngine::drawImage(), QRasterPaintEngine::drawImage(), QGraphicsScenePrivate::drawItemHelper(), QPSPrintEngine::drawPixmap(), QWin32PrintEngine::drawPixmap(), QPdfEngine::drawPixmap(), QVGPaintEngine::drawPixmapFragments(), QDirectFbBlitter::drawPixmapOpacity(), QDirectFBPaintEnginePrivate::drawTiledPixmap(), QRasterPaintEngine::drawTiledPixmap(), drawVGImage(), QBlitterPaintEnginePrivate::fillRect(), QSystemTrayIconPrivate::geometry_sys(), QGraphicsWidget::initStyleOption(), QGraphicsItemPrivate::initStyleOption(), QPlainTextEdit::inputMethodQuery(), QTextEdit::inputMethodQuery(), QDeclarativePaintedItem::paint(), QDeclarativeText::paint(), QLabel::paintEvent(), QAccessibleTextEdit::rect(), QAccessibleDial::rect(), QGraphicsScene::render(), QGraphicsView::render(), QWidgetPrivate::screenGeometry(), QPainter::setClipRect(), QmlJSDebugger::SubcomponentMaskLayerItem::setCurrentItem(), QXRenderTessellator::tessellate(), and QDeclarativeTextEdit::updateImgCache().

{
    return QRect(qRound(xp), qRound(yp), qRound(w), qRound(h));
}

translate() [1/2]

void QRectF::translate ( qreal  dx, qreal  dy  )

inline

Moves the rectangle dx along the x-axis and dy along the y-axis, relative to the current position.

Positive values move the rectangle to the right and downwards.

See also

moveTopLeft(), moveTo(), translated()

Definition at line 716 of file qrect.h.

Referenced by QGraphicsTextItemPrivate::_q_ensureVisible(), QGraphicsTextItemPrivate::_q_update(), QPlainTextEditControl::blockBoundingRect(), QTextLayout::draw(), QTextDocumentLayoutPrivate::drawBlock(), QTextDocumentLayoutPrivate::drawFrame(), QRasterPaintEngine::drawImage(), QTextDocumentLayoutPrivate::drawListItem(), QRasterPaintEngine::drawTiledPixmap(), QTextDocumentLayoutPrivate::hitTest(), QTextDocumentLayoutPrivate::layoutFlow(), QGraphicsViewPrivate::mapToViewRect(), QPlainTextEditPrivate::pageUpDown(), QGraphicsTextItem::paint(), QGraphicsItem::sceneBoundingRect(), QGraphicsItemPrivate::sceneEffectiveBoundingRect(), QGraphicsItem::scroll(), QTextControl::selectionRect(), QGraphicsViewPrivate::setUpdateClip(), and updateHelper().

{
    xp += dx;
    yp += dy;
}

translate() [2/2]

void QRectF::translate ( const QPointF &  offset )

inline

Moves the rectangle {offset}.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

x() along the x axis and {offset}.y() along the y axis, relative to the current position.

Definition at line 722 of file qrect.h.

{
    xp += p.x();
    yp += p.y();
}

translated() [1/2]

QRectF QRectF::translated ( qreal  dx, qreal  dy  ) const

inline

Returns a copy of the rectangle that is translated dx along the x axis and dy along the y axis, relative to the current position.

Positive values move the rectangle to the right and down.

See also

translate()

Definition at line 740 of file qrect.h.

Referenced by QDeclarativeTextEdit::boundingRect(), QPixmapDropShadowFilter::boundingRectFor(), QPixmapConvolutionFilter::draw(), QPixmapBlurFilter::draw(), QTextLayout::draw(), QTextDocumentLayoutPrivate::drawListItem(), QRasterPaintEngine::drawPixmap(), QGraphicsScenePrivate::drawSubtreeRecursive(), QPlainTextEditPrivate::ensureVisible(), QScriptEdit::extraAreaPaintEvent(), QRasterPaintEngine::fillRect(), QGraphicsTextItem::inputMethodQuery(), QGraphicsProxyWidgetPrivate::inputMethodQueryHelper(), QGraphicsSceneIndexRectIntersector::intersect(), QGraphicsSceneIndexPointIntersector::intersect(), QGraphicsSceneIndexPathIntersector::intersect(), QGraphicsItem::mapFromParent(), QGraphicsItem::mapFromScene(), QTransform::mapRect(), QMatrix4x4::mapRect(), QGraphicsItem::mapRectFromParent(), QGraphicsItem::mapRectFromScene(), QGraphicsItem::mapRectToParent(), QGraphicsItem::mapRectToScene(), QGraphicsItem::mapToParent(), QGraphicsItem::mapToScene(), QGraphicsViewPrivate::mapToViewRect(), QLabel::paintEvent(), QPlainTextEdit::paintEvent(), QGraphicsScenePrivate::processDirtyItemsRecursive(), QGLPixmapBlurFilter::processGL(), qSubImage(), and QGraphicsWidgetPrivate::windowFrameHoverMoveEvent().

{ return QRectF(xp + dx, yp + dy, w, h); }

translated() [2/2]

QRectF QRectF::translated ( const QPointF &  offset ) const

inline

Returns a copy of the rectangle that is translated {offset}.

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.

x() along the x axis and {offset}.y() along the y axis, relative to the current position.

Definition at line 743 of file qrect.h.

{ return QRectF(xp + p.x(), yp + p.y(), w, h); }

unite()

QRectF QRectF::unite ( const QRectF &  rectangle ) const

inline

Use united(rectangle) instead.

Definition at line 823 of file qrect.h.

Referenced by united().

{
    return *this | r;
}

united()

QRectF QRectF::united ( const QRectF &  rectangle ) const

inline

Returns the bounding rectangle of this rectangle and the given rectangle.

Since

4.2

See also

intersected()

Definition at line 828 of file qrect.h.

Referenced by QPixmapDropShadowFilter::boundingRectFor(), QTextBrowserPrivate::setSource(), and QDeclarativeTextPrivate::setupTextLayout().

{
    return unite(r);
}

width()

qreal QRectF::width ( ) const

inline

Returns the width of the rectangle.

See also

setWidth(), height(), size()

Definition at line 707 of file qrect.h.

Referenced by _q_adjustRect(), _q_boundGeometryToSizeConstraints(), QPrintPreviewWidgetPrivate::_q_fit(), QPainterPath::addEllipse(), QGL2PEXVertexArray::addPath(), QPathSegments::addPath(), QPainterPath::addRect(), QPainterPath::addRoundedRect(), QPainterPath::addRoundRect(), QPainterPath::arcTo(), QPlainTextDocumentLayout::blockBoundingRect(), QDeclarativeItemPrivate::computeTransformOrigin(), QPathClipper::contains(), QOpenGLPaintEnginePrivate::copyDrawable(), QPainter::PixmapFragment::create(), createRectNode(), QTriangulatingStroker::cubicTo(), QGraphicsSceneBspTree::debug(), QAlphaPaintEnginePrivate::drawAlphaImage(), QPainter::drawArc(), QTextDocumentLayoutPrivate::drawBlock(), QPainter::drawChord(), QStyleHelper::drawDial(), QCoreGraphicsPaintEngine::drawEllipse(), QVGPaintEngine::drawEllipse(), QRasterPaintEngine::drawEllipse(), QPainter::drawEllipse(), QTextDocumentLayoutPrivate::drawFrameDecoration(), QPdfEngine::drawImage(), QCoreGraphicsPaintEngine::drawImage(), QX11PaintEngine::drawImage(), QVGPaintEngine::drawImage(), QSvgPaintEngine::drawImage(), QPaintEngine::drawImage(), QRasterPaintEngine::drawImage(), QPainter::drawImage(), QOpenGLPaintEnginePrivate::drawImageAsPath(), QPSPrintEngine::drawImageInternal(), drawImageTiled(), QGraphicsScenePrivate::drawItemHelper(), QTextDocumentLayoutPrivate::drawListItem(), QGLEllipseMaskGenerator::drawMask(), QPainter::drawPath(), QPainter::drawPie(), QWin32PrintEngine::drawPixmap(), QPdfEngine::drawPixmap(), QCoreGraphicsPaintEngine::drawPixmap(), QX11PaintEngine::drawPixmap(), QPainter::drawPixmap(), QVGPaintEngine::drawPixmapFragments(), QVGPaintEngine::drawRects(), QPaintEngine::drawRects(), QPaintEngineEx::drawRects(), QRasterPaintEngine::drawRects(), QPdfBaseEngine::drawRects(), QPainter::drawRects(), QPaintEngineEx::drawRoundedRect(), QPainter::drawRoundedRect(), QTextDocumentLayoutPrivate::drawTableCell(), QPainter::drawText(), QOpenGLPaintEngine::drawTextureRect(), QPSPrintEngine::drawTiledPixmap(), QWin32PrintEngine::drawTiledPixmap(), QCoreGraphicsPaintEngine::drawTiledPixmap(), QX11PaintEngine::drawTiledPixmap(), QOpenGLPaintEngine::drawTiledPixmap(), QPaintEngine::drawTiledPixmap(), QRasterPaintEngine::drawTiledPixmap(), QPaintEngineEx::drawTiledPixmap(), QPainter::drawTiledPixmap(), drawVGImage(), QPdfEnginePrivate::embedFont(), QOutlineMapper::endOutline(), QEmulationPaintEngine::fill(), QRasterPaintEngine::fill(), QEmulationPaintEngine::fillBGRect(), QVGPaintEngine::fillRect(), QPaintEngineEx::fillRect(), QBlitterPaintEnginePrivate::fillRect(), QRasterPaintEngine::fillRect(), QGridLayoutEngine::fillRowData(), QGraphicsView::fitInView(), QDeclarativeCompiler::genLiteralAssignment(), QDeclarativePaintedItem::geometryChanged(), QDeclarativeItem::geometryChanged(), QDeclarativeText::geometryChanged(), QDeclarativeFlickable::geometryChanged(), QDeclarativeTextInput::geometryChanged(), QDeclarativeListView::geometryChanged(), QDeclarativeTextEdit::geometryChanged(), QGraphicsSceneBspTree::initialize(), QPathClipper::intersect(), QDeclarativeLoaderPrivate::itemGeometryChanged(), QDeclarativeContents::itemGeometryChanged(), QDeclarativeAnchorsPrivate::itemGeometryChanged(), QDeclarativeGridViewPrivate::itemGeometryChanged(), QDeclarativeListViewPrivate::itemGeometryChanged(), QLabelPrivate::layoutRect(), QSvgIOHandlerPrivate::load(), QMacPixmapData::macCreatePixels(), QMatrix::mapRect(), QTransform::mapRect(), QMatrix4x4::mapRect(), QSvgTinyDocument::mapSourceToTarget(), QPaintBuffer::metric(), QmlJSDebugger::ZoomTool::mouseReleaseEvent(), operator<<(), QDeclarativeParticlesPainter::paint(), QPlainTextEdit::paintEvent(), printPage(), QDashedStrokeProcessor::process(), QGLPixmapBlurFilter::processGL(), qDrawBorder(), QPolygonF::QPolygonF(), QRectF_intersects(), qt_curves_for_arc(), qt_find_ellipse_coords(), qt_format_text(), qt_graphicsItem_highlightSelected(), qt_isect_curve_horizontal(), qt_isect_curve_vertical(), qt_mac_compose_rect(), qt_mac_create_imagemask(), qt_painterpath_isect_curve(), qt_scale_image_16bit(), qt_scale_image_32bit(), qt_scale_image_argb24_on_rgb16(), qt_scale_image_argb32_on_argb32(), qt_scale_image_argb32_on_rgb16(), qt_scale_image_rgb16_on_rgb16(), qt_scale_image_rgb32_on_rgb32(), QGraphicsViewPrivate::recalculateContentSize(), QGraphicsScene::render(), QGraphicsView::render(), QPaintEngineExPrivate::replayClipOperations(), QVGPaintEnginePrivate::roundedRectPath(), scaleRect(), QPainter::setClipPath(), QPainter::setClipRect(), QDeclarativeLayoutItem::setGeometry(), QX11WindowSurface::setGeometry(), setPenAndDrawBackground(), QDeclarativeTextPrivate::setupTextLayout(), QDeclarativeRectFValueType::setY(), shift(), stretchGradientToUserSpace(), QEmulationPaintEngine::stroke(), toRect_normalized(), QTest::toString(), glyph_metrics_t::transformed(), ShaderEffectItem::updateEffectState(), ShaderEffectItem::updateGeometry(), QGraphicsScene::width(), and QPicturePaintEngine::writeCmdLength().

{ return w; }

x()

qreal QRectF::x ( ) const

inline

Returns the x-coordinate of the rectangle's left edge.

Equivalent to left().

See also

setX(), y(), topLeft()

Definition at line 664 of file qrect.h.

Referenced by QPainterPath::addEllipse(), QPainterPath::addRect(), QPainterPath::addRoundedRect(), QPainterPath::addRoundRect(), QPainterPath::arcTo(), QRenderRule::borderClip(), QPainter::boundingRect(), QGridLayoutEngine::cellRect(), QPathClipper::contains(), QPainter::PixmapFragment::create(), QAlphaPaintEnginePrivate::drawAlphaImage(), QPainter::drawArc(), QPainter::drawChord(), QCoreGraphicsPaintEngine::drawEllipse(), QVGPaintEngine::drawEllipse(), QRasterPaintEngine::drawEllipse(), QPainter::drawEllipse(), QPdfEngine::drawImage(), QCoreGraphicsPaintEngine::drawImage(), QX11PaintEngine::drawImage(), QVGPaintEngine::drawImage(), QSvgPaintEngine::drawImage(), QPaintEngine::drawImage(), QRasterPaintEngine::drawImage(), QPainter::drawImage(), QPSPrintEngine::drawImageInternal(), drawImageTiled(), QPainter::drawPath(), QPainter::drawPie(), QPdfEngine::drawPixmap(), QCoreGraphicsPaintEngine::drawPixmap(), QX11PaintEngine::drawPixmap(), QPainter::drawPixmap(), QVGPaintEngine::drawRects(), QPaintEngine::drawRects(), QPaintEngineEx::drawRects(), QPdfBaseEngine::drawRects(), QPainter::drawRoundedRect(), QPainter::drawText(), drawTexture(), QOpenGLPaintEngine::drawTextureRect(), QPSPrintEngine::drawTiledPixmap(), QCoreGraphicsPaintEngine::drawTiledPixmap(), QX11PaintEngine::drawTiledPixmap(), QVGPaintEngine::drawTiledPixmap(), QPaintEngine::drawTiledPixmap(), QRasterPaintEngine::drawTiledPixmap(), QPaintEngineEx::drawTiledPixmap(), QPainter::drawTiledPixmap(), drawVGImage(), QPdfEnginePrivate::embedFont(), QOutlineMapper::endOutline(), QEmulationPaintEngine::fill(), QEmulationPaintEngine::fillBGRect(), QBlitterPaintEngine::fillRect(), QVGPaintEngine::fillRect(), QPaintEngineEx::fillRect(), QBlitterPaintEnginePrivate::fillRect(), QGridLayoutEngine::fillRowData(), QDeclarativeCompiler::genLiteralAssignment(), QDeclarativeMouseArea::geometryChanged(), QPathClipper::intersect(), QDeclarativeContents::itemGeometryChanged(), QDeclarativeAnchorsPrivate::itemGeometryChanged(), QDeclarativeFlickablePrivate::itemGeometryChanged(), QLabelPrivate::layoutRect(), QMatrix::mapRect(), QTransform::mapRect(), QMatrix4x4::mapRect(), QSvgTinyDocument::mapSourceToTarget(), QDeclarativeTextEdit::moveCursorDelegate(), operator<<(), QDeclarativeText::paint(), QLabel::paintEvent(), QGLPixmapBlurFilter::processGL(), qDrawBorder(), QPolygonF::QPolygonF(), qt_curves_for_arc(), qt_format_text(), qt_mac_compose_rect(), qt_mac_create_imagemask(), qt_scale_image_argb24_on_rgb16(), qt_scale_image_argb32_on_argb32(), qt_scale_image_argb32_on_rgb16(), qt_scale_image_rgb16_on_rgb16(), qt_scale_image_rgb32_on_rgb32(), qt_true_matrix(), QPaintEngineExPrivate::replayClipOperations(), scaleRect(), QPainter::setClipPath(), QPainter::setClipRect(), QGridLayoutEngine::setGeometries(), QDeclarativeLayoutItem::setGeometry(), QX11WindowSurface::setGeometry(), setPenAndDrawBackground(), QDeclarativeTextPrivate::setupTextLayout(), QDeclarativeRectFValueType::setValue(), stretchGradientToUserSpace(), QEmulationPaintEngine::stroke(), toAlignedRect_positive(), toNormalizedFillRect(), toRect_normalized(), and ShaderEffectItem::updateEffectState().

{ return xp; }

y()

qreal QRectF::y ( ) const

inline

Returns the y-coordinate of the rectangle's top edge.

Equivalent to top().

See also

setY(), x(), topLeft()

Definition at line 667 of file qrect.h.

Referenced by QPainterPath::addEllipse(), QPainterPath::addRect(), QPainterPath::addRoundedRect(), QPainterPath::addRoundRect(), QPainterPath::arcTo(), QRenderRule::borderClip(), QPainter::boundingRect(), QGridLayoutEngine::cellRect(), QPathClipper::contains(), QPainter::PixmapFragment::create(), QTextLayout::draw(), QAlphaPaintEnginePrivate::drawAlphaImage(), QPainter::drawArc(), QTextDocumentLayoutPrivate::drawBlock(), QPainter::drawChord(), QCoreGraphicsPaintEngine::drawEllipse(), QVGPaintEngine::drawEllipse(), QRasterPaintEngine::drawEllipse(), QPainter::drawEllipse(), QPdfEngine::drawImage(), QCoreGraphicsPaintEngine::drawImage(), QX11PaintEngine::drawImage(), QVGPaintEngine::drawImage(), QSvgPaintEngine::drawImage(), QPaintEngine::drawImage(), QRasterPaintEngine::drawImage(), QPainter::drawImage(), QPSPrintEngine::drawImageInternal(), drawImageTiled(), QPainter::drawPath(), QPainter::drawPie(), QPdfEngine::drawPixmap(), QCoreGraphicsPaintEngine::drawPixmap(), QX11PaintEngine::drawPixmap(), QPainter::drawPixmap(), QVGPaintEngine::drawRects(), QPaintEngine::drawRects(), QPaintEngineEx::drawRects(), QPdfBaseEngine::drawRects(), QPainter::drawRects(), QPainter::drawRoundedRect(), QPainter::drawText(), QOpenGLPaintEngine::drawTextureRect(), QPSPrintEngine::drawTiledPixmap(), QCoreGraphicsPaintEngine::drawTiledPixmap(), QX11PaintEngine::drawTiledPixmap(), QVGPaintEngine::drawTiledPixmap(), QPaintEngine::drawTiledPixmap(), QRasterPaintEngine::drawTiledPixmap(), QPaintEngineEx::drawTiledPixmap(), QPainter::drawTiledPixmap(), drawVGImage(), QPdfEnginePrivate::embedFont(), QOutlineMapper::endOutline(), QEmulationPaintEngine::fill(), QEmulationPaintEngine::fillBGRect(), QBlitterPaintEngine::fillRect(), QVGPaintEngine::fillRect(), QPaintEngineEx::fillRect(), QBlitterPaintEnginePrivate::fillRect(), QGridLayoutEngine::fillRowData(), QDeclarativeCompiler::genLiteralAssignment(), QDeclarativeMouseArea::geometryChanged(), QPathClipper::intersect(), QDeclarativeContents::itemGeometryChanged(), QDeclarativeAnchorsPrivate::itemGeometryChanged(), QDeclarativeFlickablePrivate::itemGeometryChanged(), QLabelPrivate::layoutRect(), QMatrix::mapRect(), QTransform::mapRect(), QMatrix4x4::mapRect(), QSvgTinyDocument::mapSourceToTarget(), QDeclarativeTextEdit::moveCursorDelegate(), operator<<(), QDeclarativeText::paint(), QLabel::paintEvent(), qDrawBorder(), QPolygonF::QPolygonF(), qt_curves_for_arc(), qt_format_text(), qt_mac_compose_rect(), qt_mac_create_imagemask(), qt_painterpath_isect_curve(), qt_scale_image_argb24_on_rgb16(), qt_scale_image_argb32_on_argb32(), qt_scale_image_argb32_on_rgb16(), qt_scale_image_rgb16_on_rgb16(), qt_scale_image_rgb32_on_rgb32(), qt_true_matrix(), QPaintEngineExPrivate::replayClipOperations(), scaleRect(), QPainter::setClipPath(), QPainter::setClipRect(), QGridLayoutEngine::setGeometries(), QDeclarativeLayoutItem::setGeometry(), QX11WindowSurface::setGeometry(), setPenAndDrawBackground(), QDeclarativeTextPrivate::setupTextLayout(), QDeclarativeRectFValueType::setValue(), stretchGradientToUserSpace(), QEmulationPaintEngine::stroke(), toAlignedRect_positive(), toNormalizedFillRect(), toRect_normalized(), and ShaderEffectItem::updateEffectState().

{ return yp; }

Friends and Related Functions

operator!=

bool operator!= ( const QRectF &  r1, const QRectF &  r2  )

friend

Returns true if the rectangles r1 and r2 are different, otherwise returns false.

Definition at line 839 of file qrect.h.

{
    return !qFuzzyCompare(r1.xp, r2.xp) || !qFuzzyCompare(r1.yp, r2.yp)
           || !qFuzzyCompare(r1.w, r2.w) || !qFuzzyCompare(r1.h, r2.h);
}

operator<<()

QDataStream & operator<< ( QDataStream &  stream, const QRectF &  rectangle  )

related

Writes the rectangle to the stream, and returns a reference to the stream.

See also

{Serializing Qt Data Types}

Definition at line 2879 of file qrect.cpp.

Referenced by toRect().

{
    s << double(r.x()) << double(r.y()) << double(r.width()) << double(r.height());
    return s;
}

operator==

bool operator== ( const QRectF &  r1, const QRectF &  r2  )

friend

Returns true if the rectangles r1 and r2 are equal, otherwise returns false.

Definition at line 833 of file qrect.h.

{
    return qFuzzyCompare(r1.xp, r2.xp) && qFuzzyCompare(r1.yp, r2.yp)
           && qFuzzyCompare(r1.w, r2.w) && qFuzzyCompare(r1.h, r2.h);
}

operator>>()

QDataStream & operator>> ( QDataStream &  stream, QRectF &  rectangle  )

related

Reads a rectangle from the stream, and returns a reference to the stream.

See also

{Serializing Qt Data Types}

Definition at line 2899 of file qrect.cpp.

{
    double x, y, w, h;
    s >> x;
    s >> y;
    s >> w;
    s >> h;
    r.setRect(qreal(x), qreal(y), qreal(w), qreal(h));
    return s;
}

Properties

h

qreal QRectF::h

private

Definition at line 609 of file qrect.h.

Referenced by adjust(), adjusted(), center(), contains(), getCoords(), getRect(), height(), intersects(), isEmpty(), isNull(), isValid(), moveBottom(), moveCenter(), normalized(), operator!=(), operator==(), operator|(), QRectF(), setBottom(), setCoords(), setHeight(), setRect(), setSize(), setTop(), size(), toRect(), and translated().

w

qreal QRectF::w

private

Definition at line 608 of file qrect.h.

Referenced by adjust(), adjusted(), center(), contains(), getCoords(), getRect(), intersects(), isEmpty(), isNull(), isValid(), moveCenter(), moveRight(), normalized(), operator!=(), operator==(), operator|(), QRectF(), setCoords(), setLeft(), setRect(), setRight(), setSize(), setWidth(), size(), toRect(), translated(), and width().

xp

qreal QRectF::xp

private

Definition at line 606 of file qrect.h.

Referenced by adjust(), adjusted(), center(), contains(), getCoords(), getRect(), intersects(), moveCenter(), moveLeft(), moveRight(), moveTo(), normalized(), operator!=(), operator==(), operator|(), QRectF(), setCoords(), setLeft(), setRect(), setRight(), toRect(), translate(), translated(), and x().

yp

qreal QRectF::yp

private

Definition at line 607 of file qrect.h.

Referenced by adjust(), adjusted(), center(), contains(), getCoords(), getRect(), intersects(), moveBottom(), moveCenter(), moveTo(), moveTop(), normalized(), operator!=(), operator==(), operator|(), QRectF(), setBottom(), setCoords(), setRect(), setTop(), toRect(), translate(), translated(), and y().

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The documentation for this class was generated from the following files:

• /src/corelib/tools/qrect.h
• /src/corelib/tools/qrect.cpp