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// Copyright (C) 2023 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only
#include <QtGui>
#if QT_CONFIG(metal) || defined(Q_OS_WIN) || QT_CONFIG(xcb) || defined(ANDROID)
#include "../../shared/nativewindow.h"
#define HAVE_NATIVE_WINDOW
#endif
#include <QDebug>
class TestWindow : public QRasterWindow
{
public:
using QRasterWindow::QRasterWindow;
TestWindow(const QBrush &brush) : m_brush(brush) {}
protected:
void mousePressEvent(QMouseEvent *) override
{
m_pressed = true;
update();
}
void mouseReleaseEvent(QMouseEvent *) override
{
m_pressed = false;
update();
}
void paintEvent(QPaintEvent *) override
{
QPainter painter(this);
painter.setCompositionMode(QPainter::CompositionMode_Source);
if (!mask().isNull())
painter.setClipRegion(mask());
painter.fillRect(QRect(0, 0, width(), height()),
m_pressed ? QGradient(QGradient::JuicyPeach) : m_brush);
}
private:
QBrush m_brush = QGradient(QGradient::DustyGrass);
bool m_pressed = false;
};
int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);
TestWindow window{QGradient(QGradient::WinterNeva)};
window.resize(500, 500);
TestWindow *opaqueChildWindow = new TestWindow;
opaqueChildWindow->setParent(&window);
opaqueChildWindow->setGeometry(50, 50, 100, 100);
opaqueChildWindow->showNormal();
TestWindow *maskedChildWindow = new TestWindow;
maskedChildWindow->setParent(&window);
maskedChildWindow->setGeometry(200, 50, 100, 100);
maskedChildWindow->setMask(QRegion(0, 0, 100, 100, QRegion::Ellipse));
maskedChildWindow->showNormal();
static const QColor transparentGreen = QColor(0, 255, 0, 20);
TestWindow *transparentChildWindow = new TestWindow(transparentGreen);
// The default surface format of a platform may not include
// an alpha, so set it explicitly.
QSurfaceFormat format = transparentChildWindow->format();
format.setAlphaBufferSize(8);
transparentChildWindow->setFormat(format);
// FIXME: Windows requires this, even for child windows
transparentChildWindow->setFlag(Qt::FramelessWindowHint);
transparentChildWindow->setParent(&window);
transparentChildWindow->setGeometry(350, 50, 100, 100);
transparentChildWindow->showNormal();
#if defined(HAVE_NATIVE_WINDOW)
NativeWindow nativeWindow;
if (QWindow *foreignWindow = QWindow::fromWinId(nativeWindow)) {
foreignWindow->setParent(&window);
foreignWindow->setGeometry(50, 200, 100, 100);
foreignWindow->showNormal();
}
NativeWindow maskedNativeWindow;
if (QWindow *foreignWindow = QWindow::fromWinId(maskedNativeWindow)) {
foreignWindow->setParent(&window);
foreignWindow->setGeometry(200, 200, 100, 100);
foreignWindow->setMask(QRegion(0, 0, 100, 100, QRegion::Ellipse));
foreignWindow->showNormal();
}
NativeWindow nativeParentWindow;
if (QWindow *foreignWindow = QWindow::fromWinId(nativeParentWindow)) {
foreignWindow->setParent(&window);
foreignWindow->setGeometry(50, 350, 100, 100);
foreignWindow->showNormal();
TestWindow *maskedChildWindowOfNativeWindow = new TestWindow;
maskedChildWindowOfNativeWindow->setParent(foreignWindow);
maskedChildWindowOfNativeWindow->setGeometry(25, 25, 50, 50);
maskedChildWindowOfNativeWindow->showNormal();
}
#endif
window.show();
return app.exec();
}
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