QSize Class Reference
The QSize class defines the size of a two-dimensional object.
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#include <qsize.h>
List of all member functions.
Public Members
QSize
expandedTo ( const QSize & otherSize ) const
QSize
boundedTo ( const QSize & otherSize ) const
Related Functions
bool
operator== ( const QSize & s1, const QSize & s2 )
bool
operator!= ( const QSize & s1, const QSize & s2 )
const QSize
operator+ ( const QSize & s1, const QSize & s2 )
const QSize
operator- ( const QSize & s1, const QSize & s2 )
const QSize
operator* ( const QSize & s, int c )
const QSize
operator* ( int c, const QSize & s )
const QSize
operator* ( const QSize & s, double c )
const QSize
operator* ( double c, const QSize & s )
const QSize
operator/ ( const QSize & s, int c )
const QSize
operator/ ( const QSize & s, double c )
QDataStream &
operator<< ( QDataStream & s, const QSize & sz )
QDataStream &
operator>> ( QDataStream & s, QSize & sz )
Detailed Description
The QSize class defines the size of a two-dimensional object.
A size is specified by a width and a height.
The coordinate type is QCOORD (defined in qwindowdefs.h as int).
The minimum value of QCOORD is QCOORD_MIN (-2147483648) and the maximum
value is QCOORD_MAX (2147483647).
See also QPoint and QRect.
Member Function Documentation
QSize::QSize ()
Constructs a size with invalid (negative) width and height.
QSize::QSize ( int w, int h )
Constructs a size with width w and height h.
QSize QSize::boundedTo ( const QSize & otherSize ) const
Returns a size with the minimum width and height of this size and
otherSize.
QSize QSize::expandedTo ( const QSize & otherSize ) const
Returns a size with the maximum width and height of this size and
otherSize.
Examples: customlayout/card.cpp and customlayout/flow.cpp.
int QSize::height () const
Returns the height.
See also width().
Examples: movies/main.cpp, qfd/fontdisplayer.cpp and qfd/qfd.cpp.
bool QSize::isEmpty () const
Returns TRUE if the width is <= 0 or the height is <= 0,
otherwise FALSE.
bool QSize::isNull () const
Returns TRUE if the width is 0 and the height is 0, otherwise FALSE.
bool QSize::isValid () const
Returns TRUE if the width is equal to or greater than 0 and the height is
equal to or greater than 0, otherwise FALSE.
QSize & QSize::operator*= ( int c )
Multiplies both the width and height with c and returns a reference to
the size.
QSize & QSize::operator*= ( double c )
Multiplies both the width and height with c and returns a reference to
the size.
Note that the result is truncated.
QSize & QSize::operator+= ( const QSize & s )
Adds s to the size and returns a reference to this size.
Example:
QSize s( 3, 7 );
QSize r( -1, 4 );
s += r; // s becomes (2,11)
QSize & QSize::operator-= ( const QSize & s )
Subtracts s from the size and returns a reference to this size.
Example:
QSize s( 3, 7 );
QSize r( -1, 4 );
s -= r; // s becomes (4,3)
QSize & QSize::operator/= ( int c )
Divides both the width and height by c and returns a reference to the
size.
QSize & QSize::operator/= ( double c )
Divides both the width and height by c and returns a reference to the
size.
Note that the result is truncated.
QCOORD & QSize::rheight ()
Returns a reference to the height.
Using a reference makes it possible to directly manipulate the height.
Example:
QSize s( 100, 10 );
s.rheight() += 5; // s becomes (100,15)
See also rwidth().
QCOORD & QSize::rwidth ()
Returns a reference to the width.
Using a reference makes it possible to directly manipulate the width.
Example:
QSize s( 100, 10 );
s.rwidth() += 20; // s becomes (120,10)
See also rheight().
void QSize::setHeight ( int h )
Sets the height to h.
See also height() and setWidth().
void QSize::setWidth ( int w )
Sets the width to w.
See also width() and setHeight().
void QSize::transpose ()
Swaps the values of width and height.
int QSize::width () const
Returns the width.
See also height().
Examples: movies/main.cpp, qfd/fontdisplayer.cpp and qfd/qfd.cpp.
Related Functions
bool operator!= ( const QSize & s1, const QSize & s2 )
Returns TRUE if s1 and s2 are different, or FALSE if they are equal.
const QSize operator* ( const QSize & s, int c )
Multiplies s by c and returns the result.
const QSize operator* ( int c, const QSize & s )
Multiplies s by c and returns the result.
const QSize operator* ( const QSize & s, double c )
Multiplies s by c and returns the result.
const QSize operator* ( double c, const QSize & s )
Multiplies s by c and returns the result.
const QSize operator+ ( const QSize & s1, const QSize & s2 )
Returns the sum of s1 and s2; each component is added separately.
const QSize operator- ( const QSize & s1, const QSize & s2 )
Returns s2 subtracted from s1; each component is
subtracted separately.
const QSize operator/ ( const QSize & s, int c )
Divides s by c and returns the result.
const QSize operator/ ( const QSize & s, double c )
Divides s by c and returns the result.
Note that the result is truncated.
Writes the size to the stream and returns a reference to the stream.
See also Format of the QDataStream operators.
bool operator== ( const QSize & s1, const QSize & s2 )
Returns TRUE if s1 and s2 are equal, or FALSE if they are different.
Reads the size from the stream and returns a reference to the stream.
See also Format of the QDataStream operators.
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