qt 6.5.1 original

tests/manual/repaint/widget/CMakeLists.txt

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+# Copyright (C) 2022 The Qt Company Ltd.
+# SPDX-License-Identifier: BSD-3-Clause
+
+#####################################################################
+## widget Binary:
+#####################################################################
+
+qt_internal_add_manual_test(widget
+    GUI
+    SOURCES
+        ../shared/shared.h
+        main.cpp
+    LIBRARIES
+        Qt::Gui
+        Qt::Widgets
+)

tests/manual/repaint/widget/main.cpp

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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 "../shared/shared.h"
+
+#include <QApplication>
+#include <QPushButton>
+
+class Child : public StaticWidget
+{
+Q_OBJECT
+public:
+    Child(QWidget *parent)
+    :StaticWidget(parent)
+    {
+        hue = 0;
+    }
+};
+
+QWidget *c;
+
+class TopLevel : public StaticWidget
+{
+Q_OBJECT
+public:
+    TopLevel()
+    {
+        resizeButton  = new QPushButton("resize", this);
+        connect(resizeButton, SIGNAL(clicked()), SLOT(buttonResizeClicked()));
+
+        movebutton  = new QPushButton("move", this);
+        connect(movebutton, SIGNAL(clicked()), SLOT(buttonMoveClicked()));
+        movebutton->move(70, 0);
+
+        moveResizebutton  = new QPushButton("move + resize", this);
+        connect(moveResizebutton, SIGNAL(clicked()), SLOT(buttonMoveResizeClicked()));
+        moveResizebutton->move(150, 0);
+
+        scrollbutton  = new QPushButton("scroll", this);
+        connect(scrollbutton, SIGNAL(clicked()), SLOT(buttonScrollClicked()));
+        scrollbutton->move(280, 0);
+    }
+
+public slots:
+    void buttonResizeClicked()
+    {
+        c->resize(c->size() + QSize(15, 15));
+        qDebug() << "child new size" << c->size();
+    }
+
+    void buttonMoveClicked()
+    {
+        c->move(c->pos() + QPoint(15, 15));
+        qDebug() << "child moved" << c->pos();
+    }
+
+    void buttonMoveResizeClicked()
+    {
+        QRect g = c->geometry();
+        g.adjust(15,15,30,30);
+        c->setGeometry(g);
+        qDebug() << "child moved" << c->pos() << "rezied" << c->size();
+    }
+
+
+    void buttonScrollClicked()
+    {
+        c->scroll(10, 10);
+    }
+
+protected:
+    QPushButton * resizeButton;
+    QPushButton * movebutton;
+    QPushButton * moveResizebutton;
+    QPushButton * scrollbutton;
+};
+
+int main(int argc, char **argv)
+{
+    QApplication app(argc, argv);
+
+    TopLevel bc;
+    bc.resize(500, 500);
+
+    c = new Child(&bc);
+    c->move(100, 100);
+    c->resize(100, 100);
+
+    QWidget *gc  = new StaticWidget(c);
+    gc->move(20, 20);
+    gc->resize(50,50);
+
+
+    bc.show();
+    return app.exec();
+}
+
+#include "main.moc"
+

tests/manual/repaint/widget/widget.pro

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+QT += widgets
+HEADERS += ../shared/shared.h
+SOURCES += main.cpp