Doc: Add What's new for Qt 5.7

Copied content from http://wiki.qt.io/New_Features_in_Qt_5.7 and
edited it.

Change-Id: I2ae7c7857dfe58d6a081fcb34ff51fcd601bbf9a
Reviewed-by: Topi Reiniö <topi.reinio@theqtcompany.com>
Reviewed-by: Martin Smith <martin.smith@theqtcompany.com>

2 files changed, 252 insertions, 0 deletions

diff --git a/doc/src/qt5-intro.qdoc b/doc/src/qt5-intro.qdoc
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--- a/doc/src/qt5-intro.qdoc
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@@ -512,6 +512,7 @@
 
     \section1 Related Topics
     \list
+    \li \l{What's New in Qt 5.7}
     \li \l{What's New in Qt 5.6}
     \li \l{What's New in Qt 5.5}
     \li \l{What's New in Qt 5.4}
diff --git a/doc/src/whatsnew/whatsnew57.qdoc b/doc/src/whatsnew/whatsnew57.qdoc
new file mode 100644
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+/****************************************************************************
+**
+** Copyright (C) 2016 The Qt Company Ltd.
+** Contact: https://www.qt.io/licensing/
+**
+** This file is part of the documentation of the Qt Toolkit.
+**
+** $QT_BEGIN_LICENSE:FDL$
+** 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 Free Documentation License Usage
+** Alternatively, this file may be used under the terms of the GNU Free
+** Documentation License version 1.3 as published by the Free Software
+** Foundation and appearing in the file included in the packaging of
+** this file. Please review the following information to ensure
+** the GNU Free Documentation License version 1.3 requirements
+** will be met: https://www.gnu.org/licenses/fdl-1.3.html.
+** $QT_END_LICENSE$
+**
+****************************************************************************/
+
+/*!
+    \page whatsnew56.html
+    \title What's New in Qt 5.7
+    \brief Lists the new features in Qt 5.7.
+
+    \section1 New Modules
+
+    The \l{Qt Quick Controls 2} module that was previously available as a
+    technology preview is now a fully supported module, providing the
+    following features:
+
+    \list
+     \li A new light-weight set of embedded and mobile-oriented controls.
+     \li Based on a flexible template system that enables rapid development of
+         entire custom styles and user experiences.
+     \li Built-in styles:
+      \list
+       \li Default style - a simple and minimal all-round style that offers
+           maximum performance.
+       \li Material style - a style based on the Google Material Design
+           Guidelines.
+       \li Universal style - a style based on the Microsoft Universal Design
+           Guidelines.
+      \endlist
+     \li Can be mixed with Qt Quick Controls 1.0, but the APIs are not compatible.
+    \endlist
+
+    The following modules that were previously commercial-only, are now
+    available under GPLv3 license for the open source users:
+
+    \list
+    \li \l{Qt Quick 2D Renderer}
+        \list
+        \li Enables running Qt Quick applications on hardware without OpenGL.
+        \endlist
+
+    \li \l{Qt Charts}
+     \list
+         \li Provides ready to use controls for depicting different types
+             of 2D charts and graphs.
+     \endlist
+
+    \li \l{Qt Data Visualization}
+     \list
+         \li Enables visualizing data using 3D charts and graphs.
+     \endlist
+
+    \li \l{Qt Purchasing}
+     \list
+         \li Provides API to support in-app purchasing use cases with
+             Google Play and Apple Store.
+     \endlist
+    \endlist
+
+    In addition, the following new modules are available as technology preview
+    releases, enabling Qt users to provide feedback:
+
+    \list
+    \li \l{Qt Gamepad}
+     \list
+      \li Enables Qt gaming applications to respond to gamepad input.
+     \endlist
+    \li \l{Qt SCXML}
+     \list
+      \li Enables static and runtime integration of SCXML models into Qt code.
+     \endlist
+    \endlist
+
+    \section1 New Features in Qt 5.7
+
+    \section2 Qt 3D Module
+    \list
+     \li Added support for Compute Shaders on supported hardware.
+     \li Added support for loading multi-image DDS and KTX textures including
+         cubemaps, mip chains, and array textures.
+     \li Improved support for compressed texture formats.
+     \li Made Render surface explicit.
+     \li Extended Input API and support for device plugins.
+     \li Improved picking support.
+    \endlist
+
+    \section2 Qt Core Module
+    \list
+        \li Added \c qAsConst function to help using non-const Qt containers in
+            C++11 range for loops.
+        \li Enabled Qt event dispatchers to use the \c poll() function on Unix
+            now, making it possible for applications to have file
+            descriptors greater than 1024.
+        \li Added support for converting a floating point to its shortest and
+            exact string form, without having to pre-calculate the number of
+            digits.
+        \li Improved C++11 support by using \c std::atomic as backend for
+            QAtomic classes and adding QTypeInfo for \c char16_t and
+            \c char32_t.
+        \li Added QIODevice support for multi-streaming.
+        \li Enabled QPluginLoader to work even if \c QT_NO_LIBRARY is set (for
+            example, linking against a static libc).
+    \endlist
+
+    \section2 Qt Canvas3D Module
+    \list
+        \li Upgraded the \e three.js 3rd party library.
+    \endlist
+
+    \section2 Qt GUI Module
+    \list
+        \li Optimized QImage smooth scaling for NEON.
+        \li Optimized the OpenGL function wrappers for speed and code size.
+            The QtGui library size has been significantly reduced due to a
+            massive reduction in symbols.
+    \endlist
+
+    \section2 Qt Multimedia Module
+    \list
+        \li Added support for tvOS.
+        \li Extended QML playlist API.
+    \endlist
+
+    \section2 Qt Platform Abstraction (QPA)
+    \list
+        \li Added support for NVIDIA DRIVE CX boards (Tegra X1, AArch64).
+        \li Improved support for theming with \e eglfs.
+        \li Enabled QMenuBar to use the unified D-Bus AppMenu menubar on
+            supported X11-based desktop environments such as Ubuntu Unity.
+        \li Added support for creating Android services.
+    \endlist
+
+    \section2 Qt QML Module
+    \list
+        \li Added JIT support for WinRT on x86 and x64.
+        \li Enabled JIT for 64-bit ARM Linux platforms.
+        \li Enabled all debug services to work with QJSEngine
+            (instead of QQmlEngine), which allows non-QML JavaScript
+            debugging or profiling.
+        \li Added support for debugging multiple QJSEngine instances at the same
+            time.
+    \endlist
+
+    \section2 Qt Quick Module
+    \list
+        \li Added support for all subclasses of QQuickWindow by the inspector
+            service, which makes Qt Creator's inspection feature useful.
+    \endlist
+
+    \section2 Qt WebEngine Module
+
+    \list
+        \li Upgraded to Chromium 49 release.
+        \li Added support for drag and drop, and printing to PDF.
+        \li Added tab notification for audio being played.
+        \li Added support for playing DRM-protected HTML5 video using Widevine
+            Pepper plugin.
+        \li Added API for evaluating JavaScript or installing QWebchannel in
+            secure and isolated JavaScript worlds.
+        \li Improved support for custom context menus.
+    \endlist
+
+    \section2 Qt Widgets Module
+    \list
+        \li Enabled QTabBar to delegate placement of tab scroll buttons to the
+            style.
+        \li Enabled Qt Style Sheets to optionally let widgets inherit font and
+            palette from their parents.
+    \endlist
+
+    \section1 Removed Functionality
+    \list
+        \li Qt Enginio
+    \endlist
+
+    \section1 Deprecated Functionality
+    \list
+        \li Qt Script
+    \endlist
+
+    Deprecated modules are still included in Qt 5.7, but are considered for removal
+    in future releases.
+
+    \section1 List of API Changes
+
+    The pages below contain a list of API changes in Qt 5.7:
+    \list
+    \li \l{New Classes and Functions in Qt 5.7}
+    \li \l{Obsolete Classes}
+    \endlist
+
+    \section1 Additions to Other Qt 5 Releases
+
+    \list
+        \li \l{What's New in Qt 5.6}
+        \li \l{What's New in Qt 5.5}
+        \li \l{What's New in Qt 5.4}
+        \li \l{What's New in Qt 5.3}
+        \li \l{What's New in Qt 5.2}
+        \li \l{What's New in Qt 5.1}
+        \li \l{What's New in Qt 5.0}
+    \endlist
+
+*/
+
+/*!
+    \page newclasses57.html
+    \title New Classes and Functions in Qt 5.7
+    \brief A list of new APIs in Qt 5.7.
+
+    This page contains a comprehensive list of all new classes and functions
+    introduced in Qt 5.7. Links to new APIs in previous Qt 5 releases are found
+    at the bottom of this page.
+
+    \sincelist 5.7
+
+    \section1 Additions to Other Qt 5 Releases
+
+    \list
+        \li \l{What's New in Qt 5.6}
+        \li \l{What's New in Qt 5.5}
+        \li \l{What's New in Qt 5.4}
+        \li \l{What's New in Qt 5.3}
+        \li \l{What's New in Qt 5.2}
+        \li \l{What's New in Qt 5.1}
+        \li \l{What's New in Qt 5.0}
+    \endlist
+*/
+