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// Copyright (C) 2019 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#ifndef HIGHDPI_H
#define HIGHDPI_H
#include <QtCore/qbytearray.h>
#include <QtCore/qpoint.h>
#include <QtCore/qrect.h>
#include <QtCore/qsize.h>
// Helpers for comparing geometries a that may go through scaling in the
// platform plugin with fuzz (pass rounded-down device pixel ratios or
// scaling factors). Error message for use with QVERIFY2() are also provided.
class HighDpi
{
public:
HighDpi() = delete;
HighDpi(const HighDpi &) = delete;
HighDpi &operator=(const HighDpi &) = delete;
HighDpi(HighDpi &&) = delete;
HighDpi &operator=(HighDpi &&) = delete;
~HighDpi() = delete;
static int manhattanDelta(const QPoint &p1, const QPoint p2)
{
return (p1 - p2).manhattanLength();
}
static bool fuzzyCompare(const QPoint &p1, const QPoint p2, int fuzz)
{
return manhattanDelta(p1, p2) <= fuzz;
}
static QByteArray msgPointMismatch(const QPoint &p1, const QPoint p2)
{
return QByteArray::number(p1.x()) + ',' + QByteArray::number(p1.y())
+ " != " + QByteArray::number(p2.x()) + ',' + QByteArray::number(p2.y())
+ ", manhattanLength=" + QByteArray::number(manhattanDelta(p1, p2));
}
// Compare a size that may go through scaling in the platform plugin with fuzz.
static inline int manhattanDelta(const QSize &s1, const QSize &s2)
{
return qAbs(s1.width() - s2.width()) + qAbs(s1.height() - s2.height());
}
static inline bool fuzzyCompare(const QSize &s1, const QSize &s2, int fuzz)
{
return manhattanDelta(s1, s2) <= fuzz;
}
static QByteArray msgSizeMismatch(const QSize &s1, const QSize &s2)
{
return QByteArray::number(s1.width()) + 'x' + QByteArray::number(s1.height())
+ " != " + QByteArray::number(s2.width()) + 'x' + QByteArray::number(s2.height())
+ ", manhattanLength=" + QByteArray::number(manhattanDelta(s1, s2));
}
// Compare a geometry that may go through scaling in the platform plugin with fuzz.
static inline bool fuzzyCompare(const QRect &r1, const QRect &r2, int fuzz)
{
return manhattanDelta(r1.topLeft(), r2.topLeft()) <= fuzz
&& manhattanDelta(r1.size(), r2.size()) <= fuzz;
}
static QByteArray msgRectMismatch(const QRect &r1, const QRect &r2)
{
return formatRect(r1) + " != " + formatRect(r2);
}
private:
static QByteArray formatRect(const QRect &r)
{
return QByteArray::number(r.width()) + 'x' + QByteArray::number(r.height())
+ (r.left() < 0 ? '-' : '+') + QByteArray::number(r.left())
+ (r.top() < 0 ? '-' : '+') + QByteArray::number(r.top());
}
};
#endif // HIGHDPI_H
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