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Diffstat (limited to 'tests/manual/peeker/main.cpp')
-rw-r--r-- | tests/manual/peeker/main.cpp | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/tests/manual/peeker/main.cpp b/tests/manual/peeker/main.cpp new file mode 100644 index 0000000..8c7b280 --- /dev/null +++ b/tests/manual/peeker/main.cpp @@ -0,0 +1,111 @@ +/**************************************************************************** +** +** Copyright (C) 2017 The Qt Company Ltd. +** Contact: https://www.qt.io/licensing/ +** +** This file is part of the QtCore module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** 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 Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 3 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL3 included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 3 requirements +** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 2.0 or (at your option) the GNU General +** Public license version 3 or any later version approved by the KDE Free +** Qt Foundation. The licenses are as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 +** 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-2.0.html and +** https://www.gnu.org/licenses/gpl-3.0.html. +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#include <QtGui> +#include <QtX11Extras/QX11Info> + +class IntensivePainter : public QWindow +{ +public: + IntensivePainter() : m_backingStore(new QBackingStore(this)) + { setGeometry(100, 100, 900, 600); } + +protected: + bool interrupted() const { return m_stopPainting; } + void stopPainting() { m_stopPainting = true; } + void beginPaining() { m_stopPainting = false; } + + void exposeEvent(QExposeEvent *) + { + bool useGreenColor = false; + QRect rect(0, 0, width(), height()); + m_backingStore->resize(QSize(width(), height())); + + qint32 peekerId = QX11Info::generatePeekerId(); + if (peekerId == -1) { + qWarning() << "Internal error: QX11Info::generatePeekerId() returned -1"; + exit(EXIT_FAILURE); + } + + while (!interrupted()) { // Begin a long operation + m_backingStore->beginPaint(rect); + QPaintDevice *device = m_backingStore->paintDevice(); + QPainter painter(device); + painter.fillRect(rect, useGreenColor ? Qt::green : Qt::red); + useGreenColor = !useGreenColor; + painter.drawText(rect, Qt::AlignCenter, QStringLiteral("Press any key to exit.\n" + "(make sure the window is in focus when testing)\n\n If key press does not " + "immediately exit the application,\n then that should be considered a bug/regression." + "\n\n A demo might appear frozen to some window managers\n and therefore " + "might get grayed out (e.g Unity), this is the expected behavior.\n On KWin, for " + "example, this demo does not get grayed out.\n Resizing the window on any system will " + "cause rendering artefacts, that is not a bug,\n but simply the way the test is " + "implemented.")); + m_backingStore->endPaint(); + m_backingStore->flush(rect); + QThread::msleep(500); // Reduce the speed of re-painting (blinking) + + QX11Info::peekEventQueue([](xcb_generic_event_t *event, void *data) { + bool isKeyPress = (event->response_type & ~0x80) == XCB_KEY_PRESS; + if (isKeyPress) { + IntensivePainter *painter = static_cast<IntensivePainter *>(data); + painter->stopPainting(); + } + return isKeyPress; + }, this, QX11Info::PeekOption::PeekFromCachedIndex, peekerId); + } + + QX11Info::removePeekerId(peekerId); + exit(EXIT_SUCCESS); + } + +private: + QBackingStore *m_backingStore; + bool m_stopPainting = false; +}; + +int main(int argc, char** argv) +{ + QGuiApplication app(argc, argv); + + IntensivePainter painterWindow; + painterWindow.show(); + + return app.exec(); +} |