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// Copyright (C) 2016 The Qt Company Ltd.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include <QtCore>
#include <QtWidgets>
class ColorWidget : public QWidget
{
QColor color;
int s;
int v;
void changeColor()
{
color.setHsv(QRandomGenerator::global()->bounded(50) + 200, s, s);
}
public:
ColorWidget()
{
s = 150;
v = 150;
changeColor();
setMouseTracking(true);
}
void mousePressEvent(QMouseEvent *)
{
changeColor();
update();
}
void mouseMoveEvent(QMouseEvent *)
{
changeColor();
update();
}
void enterEvent(QEnterEvent *)
{
s = 200;
v = 200;
changeColor();
update();
}
void leaveEvent(QEvent *)
{
s = 75;
v = 75;
changeColor();
update();
}
void paintEvent(QPaintEvent *){
QPainter p(this);
p.fillRect(QRect(QPoint(0, 0), size()), QBrush(color));
}
};
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
ColorWidget window;
QWidget *w1 = new ColorWidget;
QWidget *w2 = new ColorWidget;
QWidget *w3 = new ColorWidget;
QHBoxLayout *layout = new QHBoxLayout;
layout->addWidget(w1);
layout->addWidget(w2);
layout->addWidget(w3);
QWidget *w3_1 = new ColorWidget;
QWidget *w3_2 = new ColorWidget;
QWidget *w3_3 = new ColorWidget;
QVBoxLayout *layout3 = new QVBoxLayout;
layout3->setMargin(0);
layout3->addWidget(w3_1);
layout3->addWidget(w3_2);
layout3->addWidget(w3_3);
w3->setLayout(layout3);
window.setLayout(layout);
bool native = 1;
if (native) {
w1->winId();
w2->winId();
w3->winId();
w3_1->winId();
w3_2->winId();
w3_3->winId();
}
window.resize(640, 480);
window.show();
return app.exec();
}
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