qrect.3qt

tmark1.11:用于生成QT/EMBEDDED应用工程的Markfile文件

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.SH "bool QRect::intersects ( const QRect & r ) const"
Returns TRUE if this rectangle intersects with \fIr\fR (there is at least one pixel which is within both rectangles).
.PP
See also: intersect() and contains().
.SH "bool QRect::isEmpty () const"
Returns TRUE if the rectangle is empty, otherwise FALSE.
.PP
An empty rectangle has a left() > right() or top() > bottom().
.PP
An empty rectangle is not valid.
.PP
.nf
.br
 isEmpty() == !isValid()
.fi
.PP
See also: isNull() and isValid().
.SH "bool QRect::isNull () const"
Returns TRUE if the rectangle is a null rectangle, otherwise FALSE.
.PP
A null rectangle has both the width and the height set to 0, that is right() == left() - 1 and bottom() == top() - 1.
.PP
Remember that if right() == left() and bottom() == top(), then the rectangle has width 1 and height 1.
.PP
A null rectangle is also empty.
.PP
A null rectangle is not valid.
.PP
See also: isEmpty() and isValid().
.SH "bool QRect::isValid () const"
Returns TRUE if the rectangle is valid, or FALSE if it is invalid (empty).
.PP
A valid rectangle has a left() <= right() and top() <= bottom().
.PP
.nf
.br
 isValid() == !isEmpty()
.fi
.PP
See also: isNull(), isEmpty() and normalize().
.SH "int QRect::left () const"
Returns the left coordinate of the rectangle. Identical to x().
.PP
See also: x(), top(), right(), setLeft(), topLeft() and bottomLeft().
.PP
Examples:
.(l
xform/xform.cpp desktop/desktop.cpp
.)l
.SH "void QRect::moveBottomLeft ( const QPoint & p )"
Sets the bottom left position of the rectangle to \fIp,\fR leaving the size unchanged.
.PP
See also: bottomLeft(), moveBottomRight(), moveTopLeft(), moveTopRight(), setBottom() and setLeft().
.SH "void QRect::moveBottomRight ( const QPoint & p )"
Sets the bottom right position of the rectangle to \fIp,\fR leaving the size unchanged.
.PP
See also: bottomRight(), moveBottomLeft(), moveTopLeft(), moveTopRight(), setBottom() and setRight().
.SH "void QRect::moveBy ( int dx, int dy )"
Moves the rectangle \fIdx\fR along the X axis and \fIdy\fR along the Y axis, relative to the current position. (Positive values moves the rectangle rightwards and/or downwards.).
.PP
Examples:
.(l
xform/xform.cpp
.)l
.SH "void QRect::moveCenter ( const QPoint & p )"
Sets the center point of the rectangle to \fIp,\fR leaving the size unchanged.
.PP
See also: center(), moveTopLeft(), moveTopRight(), moveBottomLeft() and moveBottomRight().
.SH "void QRect::moveTopLeft ( const QPoint & p )"
Sets the top left position of the rectangle to \fIp,\fR leaving the size unchanged.
.PP
See also: topLeft(), moveTopRight(), moveBottomLeft(), moveBottomRight(), setTop() and setLeft().
.PP
Examples:
.(l
xform/xform.cpp
.)l
.SH "void QRect::moveTopRight ( const QPoint & p )"
Sets the top right position of the rectangle to \fIp,\fR leaving the size unchanged.
.PP
See also: topRight(), moveTopLeft(), moveBottomLeft(), moveBottomRight(), setTop() and setRight().
.SH "QRect QRect::normalize () const"
Returns a normalized rectangle, i.e. one that has a non-negative width and height.
.PP
It swaps left and right if left() > right(), and swaps top and bottom if top() > bottom().
.PP
See also: isValid().
.SH "QRect QRect::operator& ( const QRect & r ) const"
Returns the intersection of this rectangle and \fIr.\fR
.PP
Returns an empty rectangle if there is no intersection.
.PP
See also: operator&=(), operator|(), isEmpty(), intersects() and contains().
.SH "QRect& QRect::operator&= ( const QRect & r )"
Intersects this rectangle with \fIr.\fR
.SH "QRect QRect::operator| ( const QRect & r ) const"
Returns the bounding rectangle of this and \fIr.\fR
.PP
The bounding rectangle of a nonempty rectangle and an empty or invalid rectangle is defined to be the nonempty rectangle.
.PP
See also: operator|=(), operator&(), intersects() and contains().
.SH "QRect& QRect::operator|= ( const QRect & r )"
Unites this rectangle with \fIr.\fR
.SH "QCOORD & QRect::rBottom ()"
Returns the reference to the bottom coordinate of the rectangle.
.PP
See also: rLeft(), rTop() and rRight().
.SH "QCOORD & QRect::rLeft ()"
Returns the reference to the left coordinate of the rectangle.
.PP
See also: rTop(), rRight() and rBottom().
.SH "QCOORD & QRect::rRight ()"
Returns the reference to the right coordinate of the rectangle.
.PP
See also: rLeft(), rTop() and rBottom().
.SH "QCOORD & QRect::rTop ()"
Returns the reference to the top coordinate of the rectangle.
.PP
See also: rLeft(), rRight() and rBottom().
.SH "void QRect::rect ( int * x, int * y, int * w, int * h ) const"
Extracts the rectangle parameters as the position and the size.
.PP
See also: setRect() and coords().
.SH "int QRect::right () const"
Returns the right coordinate of the rectangle.
.PP
See also: left(), setRight(), topRight() and bottomRight().
.PP
Examples:
.(l
desktop/desktop.cpp
.)l
.SH "void QRect::setBottom ( int pos )"
Sets the bottom edge of the rectangle. May change the height, but will never change the top edge of the rectangle.
.PP
See also: bottom(), setTop() and setHeight().
.SH "void QRect::setCoords ( int xp1, int yp1, int xp2, int yp2 )"
Sets the coordinates of the rectangle's top left corner to \fI(xp1,yp1),\fR and the coordinates of its bottom right corner to \fI(xp2,yp2).\fR
.PP
See also: coords() and setRect().
.SH "void QRect::setHeight ( int h )"
Sets the height of the rectangle to \fIh.\fR The top edge is not moved, but the bottom edge may be moved.
.PP
See also: height(), setTop(), setBottom() and setSize().
.PP
Examples:
.(l
desktop/desktop.cpp
.)l
.SH "void QRect::setLeft ( int pos )"
Sets the left edge of the rectangle. May change the width, but will never change the right edge of the rectangle.
.PP
Identical to setX().
.PP
See also: left(), setTop() and setWidth().
.SH "void QRect::setRect ( int x, int y, int w, int h )"
Sets the coordinates of the rectangle's top left corner to \fI(x,y),\fR and its size to (w,h).
.PP
See also: rect() and setCoords().
.SH "void QRect::setRight ( int pos )"
Sets the right edge of the rectangle. May change the width, but will never change the left edge of the rectangle.
.PP
See also: right(), setLeft() and setWidth().
.SH "void QRect::setSize ( const QSize & s )"
Sets the size of the rectangle to \fIs.\fR The top left corner is not moved.
.PP
See also: size(), setWidth() and setHeight().
.PP
Examples:
.(l
xform/xform.cpp
.)l
.SH "void QRect::setTop ( int pos )"
Sets the top edge of the rectangle. May change the height, but will never change the bottom edge of the rectangle.
.PP
Identical to setY().
.PP
See also: top(), setBottom() and setHeight().
.SH "void QRect::setWidth ( int w )"
Sets the width of the rectangle to \fIw.\fR The right edge is changed, but not the left edge.
.PP
See also: width(), setLeft(), setRight() and setSize().
.PP
Examples:
.(l
desktop/desktop.cpp
.)l
.SH "void QRect::setX ( int x )"
Sets the x position of the rectangle (its left end). May change the width, but will never change the right edge of the rectangle.
.PP
Identical to setLeft().
.PP
See also: x() and setY().
.SH "void QRect::setY ( int y )"
Sets the y position of the rectangle (its top). May change the height, but will never change the bottom edge of the rectangle.
.PP
Identical to setTop().
.PP
See also: y() and setX().
.SH "QSize QRect::size () const"
Returns the size of the rectangle.
.PP
See also: width() and height().
.PP
Examples:
.(l
desktop/desktop.cpp movies/main.cpp
.)l
.SH "int QRect::top () const"
Returns the top coordinate of the rectangle. Identical to y().
.PP
See also: y(), left(), bottom(), setTop(), topLeft() and topRight().
.PP
Examples:
.(l
xform/xform.cpp desktop/desktop.cpp
.)l
.SH "QPoint QRect::topLeft () const"
Returns the top left position of the rectangle.
.PP
See also: moveTopLeft(), topRight(), bottomLeft(), bottomRight(), left() and top().
.SH "QPoint QRect::topRight () const"
Returns the top right position of the rectangle.
.PP
See also: moveTopRight(), topLeft(), bottomLeft(), bottomRight(), top() and right().
.SH "QRect QRect::unite ( const QRect & r ) const"
.nf
.br
 r.unite(s)
.fi
is equivalent to
.PP
.nf
.br
 r|s
.fi
.
.PP
Examples:
.(l
xform/xform.cpp
.)l
.SH "int QRect::width () const"
Returns the width of the rectangle. The width includes both the left and right edges, ie. width = right - left + 1.
.PP
See also: height(), size() and setHeight().
.PP
Examples:
.(l
xform/xform.cpp desktop/desktop.cpp movies/main.cpp
.)l
.SH "int QRect::x () const"
Returns the left coordinate of the rectangle. Identical to left().
.PP
See also: left(), y() and setX().
.PP
Examples:
.(l
xform/xform.cpp desktop/desktop.cpp movies/main.cpp
.)l
.SH "int QRect::y () const"
Returns the top coordinate of the rectangle. Identical to top().
.PP
See also: top(), x() and setY().
.PP
Examples:
.(l
xform/xform.cpp desktop/desktop.cpp movies/main.cpp
.)l
.SH RELATED FUNCTION DOCUMENTATION
.SH "bool operator== (const QRect & r1, const QRect & r2)"
Returns TRUE if \fIr1\fR and \fIr2\fR are equal, or FALSE if they are different.
.SH "QDataStream & operator>> (QDataStream & s, QRect & r)"
Reads a QRect from the stream and returns a reference to the stream.
.SH "QDataStream & operator<< (QDataStream & s, const QRect & r)"
Writes a QRect to the stream and returns a reference to the stream.
.PP
Serialization format: [left (Q_INT32), top (Q_INT32), right (Q_INT32), bottom (Q_INT32)].
.SH "bool operator!= (const QRect & r1, const QRect & r2)"
Returns TRUE if \fIr1\fR and \fIr2\fR are different, or FALSE if they are equal.
.SH "SEE ALSO"
.BR http://www.troll.no/qt/qrect.html
.SH COPYRIGHT
Copyright 1992-1999 Troll Tech AS.  See the license file included in
the distribution for a complete license statement.
.SH AUTHOR
Generated automatically from the source code.