Cocoa: Correct enter/leave event handling.

Make top-level windows generate enter/leave events
for sub-windows. Keep track of the current "under mouse"
window in mouseMoved and send EnterLeave events when
it changes.

mouseEntered/mouseExited handles enters and leaves
from the top-level window.

Add tests/manual/cocoa/nativewidgets.

Task-number: QTBUG-27550
Task-number: QTBUG-29751

Change-Id: If4b9f9e0f39d9fb05fdab45a100ffdcf107965ad
Reviewed-by: Gabriel de Dietrich <gabriel.dedietrich@digia.com>

2 files changed, 154 insertions, 0 deletions

diff --git a/tests/manual/cocoa/nativewidgets/main.cpp b/tests/manual/cocoa/nativewidgets/main.cpp
new file mode 100644
index 0000000000..2ff919b125
--- /dev/null
+++ b/tests/manual/cocoa/nativewidgets/main.cpp
@@ -0,0 +1,147 @@
+/****************************************************************************
+**
+** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies).
+** Contact: http://www.qt-project.org/legal
+**
+** This file is part of the test suite 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 Digia.  For licensing terms and
+** conditions see http://qt.digia.com/licensing.  For further information
+** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
+** Foundation and appearing in the file LICENSE.LGPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU Lesser General Public License version 2.1 requirements
+** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
+**
+** In addition, as a special exception, Digia gives you certain additional
+** rights.  These rights are described in the Digia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
+**
+** GNU General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3.0 as published by the Free Software
+** Foundation and appearing in the file LICENSE.GPL included in the
+** packaging of this file.  Please review the following information to
+** ensure the GNU General Public License version 3.0 requirements will be
+** met: http://www.gnu.org/copyleft/gpl.html.
+**
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+#include <QtCore>
+#include <QtWidgets>
+
+class ColorWidget : public QWidget
+{
+    QColor color;
+    int s;
+    int v;
+
+    void changeColor()
+    {
+        color.setHsv((qreal(qrand()) / RAND_MAX) * 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(QEvent *)
+    {
+        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();
+}
+
+
+
diff --git a/tests/manual/cocoa/nativewidgets/nativewigets.pro b/tests/manual/cocoa/nativewidgets/nativewigets.pro
new file mode 100644
index 0000000000..f1b1260688
--- /dev/null
+++ b/tests/manual/cocoa/nativewidgets/nativewigets.pro
@@ -0,0 +1,7 @@
+TEMPLATE = app
+
+HEADERS +=
+SOURCES += main.cpp
+
+QT += core widgets
+DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0