qdoc: Extend \include command to include exampledirs

By default, qdoc supports \include files from the sourcedirs only.
It should also consider files to \include from the exampledirs, like
it does for the \snippet and \quotefromfile commands.

In addition, added a test to check if the \include works
for files exampledirs.

Change-Id: I9ce0b1905bfd0413022a4b4cab42588e4540e70e
Reviewed-by: Qt CI Bot <qt_ci_bot@qt-project.org>
Reviewed-by: Paul Wicking <paul.wicking@qt.io>

1 files changed, 64 insertions, 0 deletions

diff --git a/tests/auto/qdoc/generatedoutput/includefromexampledirs/excludes/parentinclude.qdoc b/tests/auto/qdoc/generatedoutput/includefromexampledirs/excludes/parentinclude.qdoc
new file mode 100644
index 000000000..c95e22125
--- /dev/null
+++ b/tests/auto/qdoc/generatedoutput/includefromexampledirs/excludes/parentinclude.qdoc
@@ -0,0 +1,64 @@
+/****************************************************************************
+**
+** Copyright (C) 2020 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the tools applications of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:GPL-EXCEPT$
+** 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 General Public License Usage
+** Alternatively, this file may be used under the terms of the GNU
+** General Public License version 3 as published by the Free Software
+** Foundation with exceptions as appearing in the file LICENSE.GPL3-EXCEPT
+** 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-3.0.html.
+**
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+//! abstract-type
+    \qmltype AbstractParent
+    \ingroup qmltypes
+    \qmlabstract
+    \brief Abstract base QML type.
+//! abstract-type
+*/
+
+/*!
+//! children-qmlproperty
+    \qmlproperty list<Child> AbstractParent::children
+    \default
+    \brief Children of the type.
+//! children-qmlproperty
+*/
+
+/*!
+//! rear-qmlmethod
+    \qmlmethod void AbstractParent::rear(Child child)
+    \brief Do some abstract parenting on \a child.
+//! rear-qmlmethod
+*/
+
+/*!
+    \qmltype Child
+    \ingroup qmltypes
+    \inherits AbstractParent
+    \brief A Child inheriting its parent.
+*/
+
+/*!
+    \qmlbasictype int
+    \ingroup qmltypes
+    \brief An integer basic type.
+*/