kwin/autotests/integration/scene_qpainter_test.cpp

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2020-08-02 22:22:19 +00:00
/*
KWin - the KDE window manager
This file is part of the KDE project.
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SPDX-FileCopyrightText: 2016 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
*/
#include "kwin_wayland_test.h"
#include "composite.h"
#include "core/platform.h"
#include "cursor.h"
#include "effectloader.h"
#include "effects.h"
#include "wayland/shmclientbuffer.h"
#include "wayland/surface_interface.h"
#include "wayland_server.h"
#include "workspace.h"
#include "x11window.h"
#include <KConfigGroup>
#include <KWayland/Client/pointer.h>
#include <KWayland/Client/seat.h>
#include <KWayland/Client/surface.h>
#include <QPainter>
#include <netwm.h>
#include <xcb/xcb_icccm.h>
using namespace KWin;
static const QString s_socketName = QStringLiteral("wayland_test_kwin_scene_qpainter-0");
class SceneQPainterTest : public QObject
{
Q_OBJECT
private Q_SLOTS:
void initTestCase();
void cleanup();
void testStartFrame();
void testCursorMoving();
void testWindow();
void testWindowScaled();
void testCompositorRestart();
void testX11Window();
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private:
QImage grab(Output *output);
};
void SceneQPainterTest::cleanup()
{
Test::destroyWaylandConnection();
}
void SceneQPainterTest::initTestCase()
{
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qRegisterMetaType<KWin::Window *>();
QSignalSpy applicationStartedSpy(kwinApp(), &Application::started);
kwinApp()->platform()->setInitialWindowSize(QSize(1280, 1024));
QVERIFY(waylandServer()->init(s_socketName));
QMetaObject::invokeMethod(kwinApp()->platform(), "setVirtualOutputs", Qt::DirectConnection, Q_ARG(int, 2));
// disable all effects - we don't want to have it interact with the rendering
auto config = KSharedConfig::openConfig(QString(), KConfig::SimpleConfig);
KConfigGroup plugins(config, QStringLiteral("Plugins"));
const auto builtinNames = EffectLoader().listOfKnownEffects();
for (QString name : builtinNames) {
plugins.writeEntry(name + QStringLiteral("Enabled"), false);
}
config->sync();
kwinApp()->setConfig(config);
if (!QStandardPaths::locateAll(QStandardPaths::GenericDataLocation, QStringLiteral("icons/DMZ-White/index.theme")).isEmpty()) {
qputenv("XCURSOR_THEME", QByteArrayLiteral("DMZ-White"));
} else {
// might be vanilla-dmz (e.g. Arch, FreeBSD)
qputenv("XCURSOR_THEME", QByteArrayLiteral("Vanilla-DMZ"));
}
qputenv("XCURSOR_SIZE", QByteArrayLiteral("24"));
qputenv("KWIN_COMPOSE", QByteArrayLiteral("Q"));
kwinApp()->start();
QVERIFY(applicationStartedSpy.wait());
QVERIFY(Compositor::self());
}
QImage SceneQPainterTest::grab(Output *output)
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{
QImage image;
QMetaObject::invokeMethod(kwinApp()->platform(),
"captureOutput",
Qt::DirectConnection,
Q_RETURN_ARG(QImage, image),
Q_ARG(Output *, output));
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return image;
}
void SceneQPainterTest::testStartFrame()
{
// this test verifies that the initial rendering is correct
Compositor::self()->scene()->addRepaintFull();
auto scene = Compositor::self()->scene();
QVERIFY(scene);
QCOMPARE(kwinApp()->platform()->selectedCompositor(), QPainterCompositing);
QSignalSpy frameRenderedSpy(scene, &Scene::frameRendered);
QVERIFY(frameRenderedSpy.wait());
// now let's render a reference image for comparison
QImage referenceImage(QSize(1280, 1024), QImage::Format_RGB32);
referenceImage.fill(Qt::black);
QPainter p(&referenceImage);
auto cursor = KWin::Cursors::self()->mouse();
const QImage cursorImage = cursor->image();
QVERIFY(!cursorImage.isNull());
p.drawImage(cursor->pos() - cursor->hotspot(), cursorImage);
const auto outputs = workspace()->outputs();
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QCOMPARE(referenceImage, grab(outputs.constFirst()));
}
void SceneQPainterTest::testCursorMoving()
{
// this test verifies that rendering is correct also after moving the cursor a few times
auto scene = Compositor::self()->scene();
QVERIFY(scene);
QSignalSpy frameRenderedSpy(scene, &Scene::frameRendered);
KWin::Cursors::self()->mouse()->setPos(0, 0);
QVERIFY(frameRenderedSpy.wait());
KWin::Cursors::self()->mouse()->setPos(10, 0);
QVERIFY(frameRenderedSpy.wait());
KWin::Cursors::self()->mouse()->setPos(10, 12);
QVERIFY(frameRenderedSpy.wait());
KWin::Cursors::self()->mouse()->setPos(12, 14);
QVERIFY(frameRenderedSpy.wait());
KWin::Cursors::self()->mouse()->setPos(50, 60);
QVERIFY(frameRenderedSpy.wait());
KWin::Cursors::self()->mouse()->setPos(45, 45);
QVERIFY(frameRenderedSpy.wait());
// now let's render a reference image for comparison
QImage referenceImage(QSize(1280, 1024), QImage::Format_RGB32);
referenceImage.fill(Qt::black);
QPainter p(&referenceImage);
auto cursor = Cursors::self()->currentCursor();
const QImage cursorImage = cursor->image();
QVERIFY(!cursorImage.isNull());
p.drawImage(QPoint(45, 45) - cursor->hotspot(), cursorImage);
const auto outputs = workspace()->outputs();
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QCOMPARE(referenceImage, grab(outputs.constFirst()));
}
void SceneQPainterTest::testWindow()
{
KWin::Cursors::self()->mouse()->setPos(45, 45);
// this test verifies that a window is rendered correctly
using namespace KWayland::Client;
QVERIFY(Test::setupWaylandConnection(Test::AdditionalWaylandInterface::Seat));
QVERIFY(Test::waitForWaylandPointer());
std::unique_ptr<KWayland::Client::Surface> s(Test::createSurface());
std::unique_ptr<Test::XdgToplevel> ss(Test::createXdgToplevelSurface(s.get()));
std::unique_ptr<Pointer> p(Test::waylandSeat()->createPointer());
auto scene = KWin::Compositor::self()->scene();
QVERIFY(scene);
QSignalSpy frameRenderedSpy(scene, &Scene::frameRendered);
// now let's map the window
QVERIFY(Test::renderAndWaitForShown(s.get(), QSize(200, 300), Qt::blue));
// which should trigger a frame
if (frameRenderedSpy.isEmpty()) {
QVERIFY(frameRenderedSpy.wait());
}
// we didn't set a cursor image on the surface yet, so it should be just black + window and previous cursor
QImage referenceImage(QSize(1280, 1024), QImage::Format_RGB32);
referenceImage.fill(Qt::black);
QPainter painter(&referenceImage);
painter.fillRect(0, 0, 200, 300, Qt::blue);
// now let's set a cursor image
std::unique_ptr<KWayland::Client::Surface> cs(Test::createSurface());
QVERIFY(cs != nullptr);
Test::render(cs.get(), QSize(10, 10), Qt::red);
p->setCursor(cs.get(), QPoint(5, 5));
QVERIFY(frameRenderedSpy.wait());
painter.fillRect(KWin::Cursors::self()->mouse()->pos().x() - 5, KWin::Cursors::self()->mouse()->pos().y() - 5, 10, 10, Qt::red);
const auto outputs = workspace()->outputs();
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QCOMPARE(referenceImage, grab(outputs.constFirst()));
// let's move the cursor again
KWin::Cursors::self()->mouse()->setPos(10, 10);
QVERIFY(frameRenderedSpy.wait());
painter.fillRect(0, 0, 200, 300, Qt::blue);
painter.fillRect(5, 5, 10, 10, Qt::red);
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QCOMPARE(referenceImage, grab(outputs.constFirst()));
}
void SceneQPainterTest::testWindowScaled()
{
KWin::Cursors::self()->mouse()->setPos(10, 10);
// this test verifies that a window is rendered correctly
using namespace KWayland::Client;
QVERIFY(Test::setupWaylandConnection(Test::AdditionalWaylandInterface::Seat));
QVERIFY(Test::waitForWaylandPointer());
std::unique_ptr<KWayland::Client::Surface> s(Test::createSurface());
std::unique_ptr<Test::XdgToplevel> ss(Test::createXdgToplevelSurface(s.get()));
std::unique_ptr<Pointer> p(Test::waylandSeat()->createPointer());
QSignalSpy pointerEnteredSpy(p.get(), &Pointer::entered);
auto scene = KWin::Compositor::self()->scene();
QVERIFY(scene);
QSignalSpy frameRenderedSpy(scene, &Scene::frameRendered);
// now let's set a cursor image
std::unique_ptr<KWayland::Client::Surface> cs(Test::createSurface());
QVERIFY(cs != nullptr);
Test::render(cs.get(), QSize(10, 10), Qt::red);
// now let's map the window
s->setScale(2);
// draw a blue square@400x600 with red rectangle@200x200 in the middle
const QSize size(400, 600);
QImage img(size, QImage::Format_ARGB32_Premultiplied);
img.fill(Qt::blue);
QPainter surfacePainter(&img);
surfacePainter.fillRect(200, 300, 200, 200, Qt::red);
// add buffer
Test::render(s.get(), img);
QVERIFY(pointerEnteredSpy.wait());
p->setCursor(cs.get(), QPoint(5, 5));
// which should trigger a frame
QVERIFY(frameRenderedSpy.wait());
QImage referenceImage(QSize(1280, 1024), QImage::Format_RGB32);
referenceImage.fill(Qt::black);
QPainter painter(&referenceImage);
painter.fillRect(0, 0, 200, 300, Qt::blue);
painter.fillRect(100, 150, 100, 100, Qt::red);
painter.fillRect(5, 5, 10, 10, Qt::red); // cursor
const auto outputs = workspace()->outputs();
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QCOMPARE(referenceImage, grab(outputs.constFirst()));
}
void SceneQPainterTest::testCompositorRestart()
{
// this test verifies that the compositor/SceneQPainter survive a restart of the compositor and still render correctly
KWin::Cursors::self()->mouse()->setPos(400, 400);
// first create a window
using namespace KWayland::Client;
QVERIFY(Test::setupWaylandConnection());
std::unique_ptr<KWayland::Client::Surface> s(Test::createSurface());
std::unique_ptr<Test::XdgToplevel> ss(Test::createXdgToplevelSurface(s.get()));
QVERIFY(Test::renderAndWaitForShown(s.get(), QSize(200, 300), Qt::blue));
// now let's try to reinitialize the compositing scene
auto oldScene = KWin::Compositor::self()->scene();
QVERIFY(oldScene);
QSignalSpy sceneCreatedSpy(KWin::Compositor::self(), &KWin::Compositor::sceneCreated);
KWin::Compositor::self()->reinitialize();
if (sceneCreatedSpy.isEmpty()) {
QVERIFY(sceneCreatedSpy.wait());
}
QCOMPARE(sceneCreatedSpy.count(), 1);
auto scene = KWin::Compositor::self()->scene();
QVERIFY(scene);
// this should directly trigger a frame
KWin::Compositor::self()->scene()->addRepaintFull();
QSignalSpy frameRenderedSpy(scene, &Scene::frameRendered);
QVERIFY(frameRenderedSpy.wait());
// render reference image
QImage referenceImage(QSize(1280, 1024), QImage::Format_RGB32);
referenceImage.fill(Qt::black);
QPainter painter(&referenceImage);
painter.fillRect(0, 0, 200, 300, Qt::blue);
auto cursor = Cursors::self()->mouse();
const QImage cursorImage = cursor->image();
QVERIFY(!cursorImage.isNull());
painter.drawImage(QPoint(400, 400) - cursor->hotspot(), cursorImage);
const auto outputs = workspace()->outputs();
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QCOMPARE(referenceImage, grab(outputs.constFirst()));
}
struct XcbConnectionDeleter
{
void operator()(xcb_connection_t *pointer)
{
xcb_disconnect(pointer);
}
};
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static bool waitForXwaylandBuffer(Window *window, const QSize &size)
{
// Usually, when an Xwayland surface is created, it has a buffer of size 1x1,
// a buffer with the correct size will be committed a bit later.
KWaylandServer::SurfaceInterface *surface = window->surface();
int attemptCount = 0;
do {
if (surface->buffer() && surface->buffer()->size() == size) {
return true;
}
QSignalSpy committedSpy(surface, &KWaylandServer::SurfaceInterface::committed);
if (!committedSpy.wait()) {
return false;
}
++attemptCount;
} while (attemptCount <= 3);
return false;
}
void SceneQPainterTest::testX11Window()
{
// this test verifies the condition of BUG: 382748
// create X11 window
QSignalSpy windowAddedSpy(effects, &EffectsHandler::windowAdded);
// create an xcb window
std::unique_ptr<xcb_connection_t, XcbConnectionDeleter> c(xcb_connect(nullptr, nullptr));
QVERIFY(!xcb_connection_has_error(c.get()));
const QRect windowGeometry(0, 0, 100, 200);
xcb_window_t windowId = xcb_generate_id(c.get());
uint32_t value = Xcb::defaultScreen()->white_pixel;
xcb_create_window(c.get(), XCB_COPY_FROM_PARENT, windowId, rootWindow(),
windowGeometry.x(),
windowGeometry.y(),
windowGeometry.width(),
windowGeometry.height(),
0, XCB_WINDOW_CLASS_INPUT_OUTPUT, XCB_COPY_FROM_PARENT, XCB_CW_BACK_PIXEL, &value);
xcb_size_hints_t hints;
memset(&hints, 0, sizeof(hints));
xcb_icccm_size_hints_set_position(&hints, 1, windowGeometry.x(), windowGeometry.y());
xcb_icccm_size_hints_set_size(&hints, 1, windowGeometry.width(), windowGeometry.height());
xcb_icccm_set_wm_normal_hints(c.get(), windowId, &hints);
xcb_map_window(c.get(), windowId);
xcb_flush(c.get());
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// we should get a window for it
QSignalSpy windowCreatedSpy(workspace(), &Workspace::windowAdded);
QVERIFY(windowCreatedSpy.wait());
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X11Window *window = windowCreatedSpy.first().first().value<X11Window *>();
QVERIFY(window);
QCOMPARE(window->window(), windowId);
QCOMPARE(window->clientSize(), QSize(100, 200));
QVERIFY(Test::waitForWaylandSurface(window));
QVERIFY(waitForXwaylandBuffer(window, window->size().toSize()));
QImage compareImage(window->clientSize().toSize(), QImage::Format_RGB32);
compareImage.fill(Qt::white);
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auto buffer = qobject_cast<KWaylandServer::ShmClientBuffer *>(window->surface()->buffer());
QCOMPARE(buffer->data().copy(QRectF(window->clientPos(), window->clientSize()).toRect()), compareImage);
// enough time for rendering the window
QTest::qWait(100);
auto scene = KWin::Compositor::self()->scene();
QVERIFY(scene);
// this should directly trigger a frame
KWin::Compositor::self()->scene()->addRepaintFull();
QSignalSpy frameRenderedSpy(scene, &Scene::frameRendered);
QVERIFY(frameRenderedSpy.wait());
const QPointF startPos = window->pos() + window->clientPos();
auto image = grab(workspace()->outputs().constFirst());
QCOMPARE(image.copy(QRectF(startPos, window->clientSize()).toAlignedRect()), compareImage);
// and destroy the window again
xcb_unmap_window(c.get(), windowId);
xcb_flush(c.get());
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QSignalSpy windowClosedSpy(window, &X11Window::windowClosed);
QVERIFY(windowClosedSpy.wait());
xcb_destroy_window(c.get(), windowId);
c.reset();
}
WAYLANDTEST_MAIN(SceneQPainterTest)
#include "scene_qpainter_test.moc"