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Diffstat (limited to 'tests/auto/gui/kernel/qhighdpiscaling/tst_qhighdpiscaling.cpp')
-rw-r--r-- | tests/auto/gui/kernel/qhighdpiscaling/tst_qhighdpiscaling.cpp | 95 |
1 files changed, 95 insertions, 0 deletions
diff --git a/tests/auto/gui/kernel/qhighdpiscaling/tst_qhighdpiscaling.cpp b/tests/auto/gui/kernel/qhighdpiscaling/tst_qhighdpiscaling.cpp new file mode 100644 index 0000000000..ec80c2d02c --- /dev/null +++ b/tests/auto/gui/kernel/qhighdpiscaling/tst_qhighdpiscaling.cpp @@ -0,0 +1,95 @@ +/**************************************************************************** +** +** Copyright (C) 2019 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the test suite of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:GPL-EXCEPT$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and The Qt Company. For licensing terms +** and conditions see https://www.qt.io/terms-conditions. For further +** information use the contact form at https://www.qt.io/contact-us. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3 as published by the Free Software +** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT +** included in the packaging of this file. Please review the following +** information to ensure the GNU General Public License requirements will +** be met: https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <private/qhighdpiscaling_p.h> +#include <qpa/qplatformscreen.h> + +#include <QtTest/QtTest> + +class tst_QHighDpiScaling: public QObject +{ + Q_OBJECT + +private slots: + void factor(); + void scale(); +}; + +// Emulate the case of a High DPI secondary screen +class MyPlatformScreen : public QPlatformScreen +{ +public: + QRect geometry() const override { return QRect(3840, 0, 3840, 1920); } + QRect availableGeometry() const override { return geometry(); } + + int depth() const override { return 32; } + QImage::Format format() const override { return QImage::Format_ARGB32_Premultiplied; } +}; + +void tst_QHighDpiScaling::factor() +{ + QHighDpiScaling::setGlobalFactor(2); + + // Verfy that QHighDpiScaling::factor() does not crash on nullptr contexts. + QPoint fakeNativePosition = QPoint(5, 5); + QPlatformScreen *screenContext = nullptr; + QVERIFY(QHighDpiScaling::factor(screenContext) >= 0); + QVERIFY(QHighDpiScaling::factor(screenContext, &fakeNativePosition) >= 0); + QPlatformScreen *platformScreenContext = nullptr; + QVERIFY(QHighDpiScaling::factor(platformScreenContext) >= 0); + QVERIFY(QHighDpiScaling::factor(platformScreenContext, &fakeNativePosition) >= 0); + QWindow *windowContext = nullptr; + QVERIFY(QHighDpiScaling::factor(windowContext) >= 0); + QVERIFY(QHighDpiScaling::factor(windowContext, &fakeNativePosition) >= 0); +} + +// QTBUG-77255: Test some scaling overloads +void tst_QHighDpiScaling::scale() +{ + QHighDpiScaling::setGlobalFactor(2); + QScopedPointer<QPlatformScreen> screen(new MyPlatformScreen); + + qreal nativeValue = 10; + const qreal value = QHighDpi::fromNativePixels(nativeValue, screen.data()); + QCOMPARE(value, qreal(5)); + QCOMPARE(QHighDpi::toNativePixels(value, screen.data()), nativeValue); + + // 10, 10 within screen should translate to 5,5 with origin preserved + const QPoint nativePoint = screen->geometry().topLeft() + QPoint(10, 10); + const QPoint point = QHighDpi::fromNativePixels(nativePoint, screen.data()); + QCOMPARE(point, QPoint(3845, 5)); + QCOMPARE(QHighDpi::toNativePixels(point, screen.data()), nativePoint); + + const QPointF nativePointF(nativePoint); + const QPointF pointF = QHighDpi::fromNativePixels(nativePointF, screen.data()); + QCOMPARE(pointF, QPointF(3845, 5)); + QCOMPARE(QHighDpi::toNativePixels(pointF, screen.data()), nativePointF); +} + +#include "tst_qhighdpiscaling.moc" +QTEST_MAIN(tst_QHighDpiScaling); |