| /**************************************************************************** |
| ** |
| ** 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); |