mirror of
https://github.com/crystalidea/qt6windows7.git
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85 lines
2.8 KiB
C
85 lines
2.8 KiB
C
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// Copyright (C) 2019 The Qt Company Ltd.
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// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
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#ifndef HIGHDPI_H
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#define HIGHDPI_H
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#include <QtCore/qbytearray.h>
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#include <QtCore/qpoint.h>
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#include <QtCore/qrect.h>
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#include <QtCore/qsize.h>
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// Helpers for comparing geometries a that may go through scaling in the
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// platform plugin with fuzz (pass rounded-down device pixel ratios or
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// scaling factors). Error message for use with QVERIFY2() are also provided.
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class HighDpi
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{
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public:
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HighDpi() = delete;
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HighDpi(const HighDpi &) = delete;
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HighDpi &operator=(const HighDpi &) = delete;
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HighDpi(HighDpi &&) = delete;
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HighDpi &operator=(HighDpi &&) = delete;
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~HighDpi() = delete;
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static int manhattanDelta(const QPoint &p1, const QPoint p2)
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{
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return (p1 - p2).manhattanLength();
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}
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static bool fuzzyCompare(const QPoint &p1, const QPoint p2, int fuzz)
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{
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return manhattanDelta(p1, p2) <= fuzz;
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}
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static QByteArray msgPointMismatch(const QPoint &p1, const QPoint p2)
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{
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return QByteArray::number(p1.x()) + ',' + QByteArray::number(p1.y())
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+ " != " + QByteArray::number(p2.x()) + ',' + QByteArray::number(p2.y())
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+ ", manhattanLength=" + QByteArray::number(manhattanDelta(p1, p2));
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}
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// Compare a size that may go through scaling in the platform plugin with fuzz.
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static inline int manhattanDelta(const QSize &s1, const QSize &s2)
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{
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return qAbs(s1.width() - s2.width()) + qAbs(s1.height() - s2.height());
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}
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static inline bool fuzzyCompare(const QSize &s1, const QSize &s2, int fuzz)
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{
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return manhattanDelta(s1, s2) <= fuzz;
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}
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static QByteArray msgSizeMismatch(const QSize &s1, const QSize &s2)
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{
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return QByteArray::number(s1.width()) + 'x' + QByteArray::number(s1.height())
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+ " != " + QByteArray::number(s2.width()) + 'x' + QByteArray::number(s2.height())
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+ ", manhattanLength=" + QByteArray::number(manhattanDelta(s1, s2));
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}
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// Compare a geometry that may go through scaling in the platform plugin with fuzz.
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static inline bool fuzzyCompare(const QRect &r1, const QRect &r2, int fuzz)
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{
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return manhattanDelta(r1.topLeft(), r2.topLeft()) <= fuzz
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&& manhattanDelta(r1.size(), r2.size()) <= fuzz;
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}
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static QByteArray msgRectMismatch(const QRect &r1, const QRect &r2)
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{
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return formatRect(r1) + " != " + formatRect(r2);
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}
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private:
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static QByteArray formatRect(const QRect &r)
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{
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return QByteArray::number(r.width()) + 'x' + QByteArray::number(r.height())
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+ (r.left() < 0 ? '-' : '+') + QByteArray::number(r.left())
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+ (r.top() < 0 ? '-' : '+') + QByteArray::number(r.top());
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}
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};
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#endif // HIGHDPI_H
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