src_corelib_tools_qsize.cpp

Go to the documentation of this file.

// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR BSD-3-Clause
 
#include <QSize>
 
void examples()
{
    {
        //! [0]
        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)
        //! [0]
    }
 
    {
        //! [1]
        QSize size(100, 10);
        size.rwidth() += 20;
 
        // size becomes (120,10)
        //! [1]
        }
 
    {
        //! [2]
        QSize size(100, 10);
        size.rheight() += 5;
 
        // size becomes (100,15)
        //! [2]
    }
 
    {
        //! [3]
        QSize s( 3, 7);
        QSize r(-1, 4);
        s += r;
 
        // s becomes (2,11)
        //! [3]
    }
 
    {
        //! [4]
        QSize s( 3, 7);
        QSize r(-1, 4);
        s -= r;
 
        // s becomes (4,3)
        //! [4]
    }
 
    {
        //! [5]
        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)
        //! [5]
    }
 
    {
        //! [6]
        QSizeF size(100.3, 10);
        size.rwidth() += 20.5;
 
        // size becomes (120.8,10)
        //! [6]
    }
 
    {
        //! [7]
        QSizeF size(100, 10.2);
        size.rheight() += 5.5;
 
        // size becomes (100,15.7)
        //! [7]
    }
 
    {
        //! [8]
        QSizeF s( 3, 7);
        QSizeF r(-1, 4);
        s += r;
 
        // s becomes (2,11)
        //! [8]
    }
 
    {
        //! [9]
        QSizeF s( 3, 7);
        QSizeF r(-1, 4);
        s -= r;
 
        // s becomes (4,3)
        //! [9]
    }
}