src_corelib_tools_qsize.cpp

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QSize t1(10, 12);
t1.scale(60, 60, Qt::IgnoreAspectRatio);
// t1 is (60, 60)
 
QSize t2(10, 12);
t2.scale(60, 60, Qt::KeepAspectRatio);
// t2 is (50, 60)
 
QSize t3(10, 12);
t3.scale(60, 60, Qt::KeepAspectRatioByExpanding);
// t3 is (60, 72)
 
 
QSize size(100, 10);
size.rwidth() += 20;
 
// size becomes (120,10)
 
 
QSize size(100, 10);
size.rheight() += 5;
 
// size becomes (100,15)
 
 
QSize s( 3, 7);
QSize r(-1, 4);
s += r;
 
// s becomes (2,11)
 
 
QSize s( 3, 7);
QSize r(-1, 4);
s -= r;
 
// s becomes (4,3)
 
 
QSizeF t1(10, 12);
t1.scale(60, 60, Qt::IgnoreAspectRatio);
// t1 is (60, 60)
 
QSizeF t2(10, 12);
t2.scale(60, 60, Qt::KeepAspectRatio);
// t2 is (50, 60)
 
QSizeF t3(10, 12);
t3.scale(60, 60, Qt::KeepAspectRatioByExpanding);
// t3 is (60, 72)
 
 
QSizeF size(100.3, 10);
size.rwidth() += 20.5;
 
 // size becomes (120.8,10)
 
 
QSizeF size(100, 10.2);
size.rheight() += 5.5;
 
// size becomes (100,15.7)
 
 
QSizeF s( 3, 7);
QSizeF r(-1, 4);
s += r;
 
// s becomes (2,11)
 
 
QSizeF s( 3, 7);
QSizeF r(-1, 4);
s -= r;
 
// s becomes (4,3)