Document licenses for all Qt modules

Follow the example of the other modules and explicitly mention
the valid licenses on each module landing page, optionally
combining it with trademark information.

Change-Id: I9f1fea0f002e0ab607da89a0cbfe7c53060582d7
Reviewed-by: Leena Miettinen <riitta-leena.miettinen@qt.io>
Reviewed-by: Topi Reiniö <topi.reinio@qt.io>

src/concurrent/doc/src/qtconcurrent-index.qdoc

@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2016 The Qt Company Ltd.
+** Copyright (C) 2018 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the documentation of the Qt Toolkit.
@@ -133,4 +133,13 @@
     copy of the container when called. If you are using STL containers this copy operation
     might take some time, in this case we recommend specifying the begin and end iterators
     for the container instead.
+
+    \section1 Licenses
+
+    The Qt Concurrent module is available under commercial licenses from \l{The Qt Company}.
+    In addition, it is available under free software licenses. Since Qt 5.4,
+    these free software licenses are
+    \l{GNU Lesser General Public License, version 3}, or
+    the \l{GNU General Public License, version 2}.
+    See \l{Qt Licensing} for further details.
 */

src/dbus/doc/src/qtdbus-index.qdoc

@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2016 The Qt Company Ltd.
+** Copyright (C) 2018 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the documentation of the Qt Toolkit.
@@ -200,6 +200,15 @@
     Information about the messages will be written to the console the application
     was launched from.
 
+    \section1 Licenses
+
+    The Qt D-Bus module is available under commercial licenses from \l{The Qt Company}.
+    In addition, it is available under free software licenses. Since Qt 5.4,
+    these free software licenses are
+    \l{GNU Lesser General Public License, version 3}, or
+    the \l{GNU General Public License, version 2}.
+    See \l{Qt Licensing} for further details.
+
     \section1 Further Reading
 
     The following documents contain information about Qt's D-Bus integration

src/opengl/doc/src/qtopengl-index.qdoc

@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2016 The Qt Company Ltd.
+** Copyright (C) 2018 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the documentation of the Qt Toolkit.
@@ -41,9 +41,6 @@
     platform, Microsoft Foundation Classes (MFC) under Windows, or Qt
     on both platforms.
 
-    \note OpenGL is a trademark of Silicon Graphics, Inc. in
-    the United States and other countries.
-
     The Qt OpenGL module makes it easy to use OpenGL in Qt applications.
     It provides an OpenGL widget class that can be used just like any
     other Qt widget, except that it opens an OpenGL display buffer where
@@ -68,4 +65,16 @@
 
     The \l{Qt OpenGL C++ Classes} page gives an overview over the available classes
     in this module.
+
+    \section1 Licenses and Trademarks
+
+    The Qt OpenGL module is available under commercial licenses from \l{The Qt Company}.
+    In addition, it is available under free software licenses. Since Qt 5.4,
+    these free software licenses are
+    \l{GNU Lesser General Public License, version 3}, or
+    the \l{GNU General Public License, version 2}.
+    See \l{Qt Licensing} for further details.
+
+    OpenGL\reg is a trademark of Silicon Graphics, Inc. in
+    the United States and other countries.
 */

src/printsupport/doc/src/qtprintsupport-index.qdoc

@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2016 The Qt Company Ltd.
+** Copyright (C) 2018 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the documentation of the Qt Toolkit.
@@ -165,6 +165,19 @@
   QTextEdit requires a QPrinter rather than a QPainter because it uses information
   about the configured page dimensions in order to insert page breaks at the most
   appropriate places in printed documents.
+
+  \section1 Licenses and Trademarks
+
+  The Qt Print Support module is available under commercial licenses from \l{The Qt Company}.
+  In addition, it is available under free software licenses. Since Qt 5.4,
+  these free software licenses are
+  \l{GNU Lesser General Public License, version 3}, or
+  the \l{GNU General Public License, version 2}.
+  See \l{Qt Licensing} for further details.
+
+  Please note that Adobe\reg places restrictions on the use of its trademarks
+  (including logos) in conjunction with PDF; e.g. "Adobe PDF". Please refer
+  to \l{http://www.adobe.com}{www.adobe.com} for guidelines.
 */
 
 /*!

src/widgets/doc/src/qtwidgets-index.qdoc

@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2016 The Qt Company Ltd.
+** Copyright (C) 2018 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the documentation of the Qt Toolkit.
@@ -128,6 +128,15 @@ interfaces
 
     \image graphicsview-items.png
 
+    \section1 Licenses
+
+    The Qt Widgets module is available under commercial licenses from \l{The Qt Company}.
+    In addition, it is available under free software licenses. Since Qt 5.4,
+    these free software licenses are
+    \l{GNU Lesser General Public License, version 3}, or
+    the \l{GNU General Public License, version 2}.
+    See \l{Qt Licensing} for further details.
+
     \section1 Related Information
 
         \section2 Tutorials

src/xml/doc/src/qtxml-index.qdoc

@@ -1,6 +1,6 @@
 /****************************************************************************
 **
-** Copyright (C) 2016 The Qt Company Ltd.
+** Copyright (C) 2018 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the documentation of the Qt Toolkit.
@@ -45,4 +45,13 @@
 
     The \l{Qt XML C++ Classes} page gives an overview over the available classes
     in this module.
+
+    \section1 Licenses
+
+    The Qt XML module is available under commercial licenses from \l{The Qt Company}.
+    In addition, it is available under free software licenses. Since Qt 5.4,
+    these free software licenses are
+    \l{GNU Lesser General Public License, version 3}, or
+    the \l{GNU General Public License, version 2}.
+    See \l{Qt Licensing} for further details.
 */