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// Copyright (C) 2022 David Edmundson <davidedmundson@kde.org>
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include "mockcompositor.h"
#include <QtGui/QRasterWindow>
#include <QtGui/qpa/qplatformnativeinterface.h>
#include <QtWaylandClient/private/wayland-wayland-client-protocol.h>
#include <QtWaylandClient/private/qwaylandwindow_p.h>
using namespace MockCompositor;
class tst_scaling : public QObject, private DefaultCompositor
{
Q_OBJECT
private slots:
void initTestCase();
void cleanup() { QTRY_VERIFY2(isClean(), qPrintable(dirtyMessage())); }
void scaledWindow();
void roundingPolicy_data();
void roundingPolicy();
};
void tst_scaling::initTestCase()
{
qputenv("QT_WAYLAND_DISABLE_WINDOWDECORATION", "1");
}
void tst_scaling::scaledWindow()
{
QRasterWindow window;
window.resize(100, 100);
window.show();
QCOMPOSITOR_TRY_VERIFY(xdgToplevel());
QSignalSpy configureSpy(exec([&] { return xdgSurface(); }), &XdgSurface::configureCommitted);
QSignalSpy surfaceCommitSpy(exec([&] { return surface(); }), &Surface::commit);
const QSize configureSize(100, 100);
exec([&] {
QVERIFY(fractionalScale());
fractionalScale()->send_preferred_scale(1.5 * 120);
xdgToplevel()->sendCompleteConfigure(configureSize);
});
QTRY_COMPARE(configureSpy.count(), 1);
QCOMPARE(window.devicePixelRatio(), 1.5);
exec([&] {
Buffer *buffer = xdgToplevel()->surface()->m_committed.buffer;
QVERIFY(buffer);
QCOMPARE(buffer->size(), QSize(150, 150));
Viewport *vp = viewport();
QVERIFY(vp);
QCOMPARE(vp->m_destination, QSize(100, 100));
});
// resize the window
window.resize(200,200);
QCOMPARE(window.size(), QSize(200,200));
QVERIFY(surfaceCommitSpy.wait());
exec([&] {
Buffer *buffer = xdgToplevel()->surface()->m_committed.buffer;
QVERIFY(buffer);
QCOMPARE(buffer->size(), QSize(300, 300));
Viewport *vp = viewport();
QVERIFY(vp);
QCOMPARE(vp->m_destination, QSize(200, 200));
});
surfaceCommitSpy.clear();
// dynamic scale change
exec([&] {
QVERIFY(fractionalScale());
fractionalScale()->send_preferred_scale(2.5 * 120);
});
QTRY_COMPARE(window.devicePixelRatio(), 2.5);
QCOMPARE(window.size(), QSize(200,200));
QTRY_VERIFY(surfaceCommitSpy.count());
exec([&] {
Buffer *buffer = xdgToplevel()->surface()->m_committed.buffer;
QVERIFY(buffer);
QCOMPARE(buffer->size(), QSize(500, 500));
Viewport *vp = viewport();
QVERIFY(vp);
QCOMPARE(vp->m_destination, QSize(200, 200));
});
}
void tst_scaling::roundingPolicy_data()
{
QTest::addColumn<QSize>("windowSize");
QTest::addColumn<qreal>("scale");
QTest::addColumn<QSize>("expectedBufferSize");
QTest::newRow("1.125 - round down") << QSize(10, 10) << 1.125 << QSize(11,11);
QTest::newRow("1.25 - round up") << QSize(10, 10) << 1.25 << QSize(13,13);
QTest::newRow("1.5 - don't round") << QSize(10, 10) << 1.5 << QSize(15,15);
}
void tst_scaling::roundingPolicy()
{
QFETCH(QSize, windowSize);
QFETCH(qreal, scale);
QFETCH(QSize, expectedBufferSize);
QRasterWindow window;
window.resize(windowSize);
window.show();
QCOMPOSITOR_TRY_VERIFY(xdgToplevel());
QSignalSpy surfaceCommitSpy(exec([&] { return surface(); }), &Surface::commit);
exec([&] {
QVERIFY(fractionalScale());
fractionalScale()->send_preferred_scale(scale * 120);
xdgToplevel()->sendCompleteConfigure();
});
QVERIFY(surfaceCommitSpy.wait());
exec([&] {
Buffer *buffer = xdgToplevel()->surface()->m_committed.buffer;
QVERIFY(buffer);
QCOMPARE(buffer->size(), expectedBufferSize);
});
}
QCOMPOSITOR_TEST_MAIN(tst_scaling)
#include "tst_scaling.moc"