Changeset 561 for trunk/doc/src/qt4-intro.qdoc

Timestamp:

Feb 11, 2010, 11:19:06 PM (15 years ago)

Author:

Dmitry A. Kuminov

Message:

trunk: Merged in qt 4.6.1 sources.

Location:

trunk

Files:

• . (modified) (1 prop)
• doc/src/qt4-intro.qdoc (modified) (9 diffs)

trunk/doc/src/qt4-intro.qdoc

@@ -2 +2 @@
 **
 ** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies).
-** Contact: Qt Software Information (qt-info@nokia.com)
+** All rights reserved.
+** Contact: Nokia Corporation (qt-info@nokia.com)
 **
 ** This file is part of the documentation of the Qt Toolkit.
@@ -21 +22 @@
 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
 **
-** In addition, as a special exception, Nokia gives you certain
-** additional rights. These rights are described in the Nokia Qt LGPL
-** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this
-** package.
+** In addition, as a special exception, Nokia gives you certain additional
+** rights.  These rights are described in the Nokia Qt LGPL Exception
+** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
 **
 ** GNU General Public License Usage
@@ -34 +34 @@
 ** met: http://www.gnu.org/copyleft/gpl.html.
 **
-** If you are unsure which license is appropriate for your use, please
-** contact the sales department at qt-sales@nokia.com.
+** If you have questions regarding the use of this file, please contact
+** Nokia at qt-info@nokia.com.
 ** $QT_END_LICENSE$
 **
@@ -78 +78 @@
 
     The following features have been added to Qt since the first release of Qt 4:
+
+    In Qt 4.5:
+    \list
+    \o The WebKit browser engine included with Qt has been
+       upgraded to the latest upstream (trunk) version of WebKit,
+       bringing the latest features and improvements to Qt applications.
+    \o Qt for Mac OS X has been substantially rewritten to use
+       Apple's Cocoa API, enabling Qt applications to be deployed on
+       64-bit Macintosh hardware.
+    \o The QtXmlPatterns module has been extended to cover XSLT, a
+       transformation language for XML documents.
+    \o Qt Script introduced its debugger, 
+       providing error reporting for scripts, and to let users track down
+       bugs in their own scripts.
+    \o Qt 4.5 includes support for writing rich text documents as
+       OpenDocument files via the newly-introduced QTextDocumentWriter
+       class.
+    \o Qt Linguist can load and edit multiple translation
+       files simultaneously.
+    \o Support for ARGB top-level widgets (i.e., translucent
+       windows).
+    \endlist
 
     In Qt 4.4:
@@ -88 +110 @@
     XML processing beyond that supported by the QtXml module.
     \o Support for embedded widgets in \l{Graphics View} scenes.
-    \o The \l{Threading and Concurrent Programming}{QtConcurrent framework} for
+    \o The \l{Thread Support in Qt}{QtConcurrent framework} for
     concurrent programming using Qt paradigms and threading features.
     \o An \l{QtHelp Module}{improved help system} that can be used in conjunction
@@ -163 +185 @@
 
     For more information about improvements in each Qt release, see
-    the \l{http://www.qtsoftware.com/developer/changes/}
+    the \l{http://qt.nokia.com/developer/changes/}
     {detailed lists of changes}.
 
@@ -236 +258 @@
     built-in C++ preprocessor.
 
-    To compile code that uses .ui files, you will also need this line in
+    To compile code that uses UI files, you will also need this line in
     the .pro file:
 
@@ -436 +458 @@
 
 /*!
+    \page qt4-6-intro.html
+    \title What's New in Qt 4.6
+
+    Qt 4.6 provides many improvements and enhancements over the
+    previous releases in the Qt 4 series. This document covers the
+    most important features in this release, separated by category.
+
+\omit
+    A comprehensive list of changes between Qt 4.5 and Qt 4.6 is
+    included in the \c changes-4.6.0 file
+    \l{http://qt.nokia.com/developer/changes/changes-4.6.0}{available
+    online}. A \l{Known Issues in 4.6.1}{list of known issues}
+    for this release is also available.
+
+    Changes between this release and the previous release are provided
+    in the \c{changes-4.6.1} file (also
+    \l{http://qt.nokia.com/developer/changes/changes-4.6.1}{available online}).
+\endomit
+
+    A list of other Qt 4 features can be found on the \bold{\l{What's
+    New in Qt 4}} page.
+
+    \bold{Highlights}
+
+    \tableofcontents
+
+    \section1 Support for Symbian
+
+    Qt 4.6 is the first release to include support for the Symbian
+    platform, with integration into the S60 framework. The port to
+    Symbian and S60 provides all functionality required to develop
+    rich end-user applications for devices running S60 3.1 and
+    later.
+
+    See the \l{The Symbian platform - Introduction to Qt} for more information.
+
+    \section1 Animation Framework
+
+    The animation framework helps build highly animated,
+    high-performance GUIs without the hassle of managing complex
+    structures, timers, and easing curves, not to mention the large
+    state graphs that all animated GUIs tend to be full of.
+
+    The framework makes it easy to animate \l{QObject}s, including
+    QWidgets, by allowing Qt properties to be animated. It also allows
+    creating custom animations and interpolation functions. Graphics
+    views are not left out; one can animate \l{QGraphicsWidget}s and
+    new \l{QGraphicsObject}s which inherit from QGraphicsItem
+    (and thereby enable properties).
+
+    Animations are controlled using easing curves and can be grouped
+    together. This enables animations of arbitrary complexity.
+
+    The API is easy to grasp with functions such as start(), stop(),
+    pause(), and currentTime(). Here is an image from one of the
+    examples that come with the framework:
+
+    \image whatsnewanimatedtiles.png
+
+    The animation framework also plugs into the new Qt Statemachine by
+    allowing an animation to be played when transitions are triggered.
+    The state machine framework is introduced in 4.6 and is described
+    below.
+
+    See \l{The Animation Framework} documentation for more information.
+
+    \section1 State Machine Framework
+
+    The state machine framework provides a robust state chart
+    implementation based on Harel statecharts and SCXML. Qt's API lets
+    you construct such state graphs and execute them. The key benefits
+    of a state machine are:
+
+    \list
+        \o Simplify complex application semantics.
+        \o Use of states to reduce code bloat.
+        \o Use states to improve maintainability. 
+        \o Makes event-driven programming robust and more
+           reusable.
+    \endlist
+
+    It is especially the last item here that makes using a state
+    machine worthwhile. A key characteristic of event-driven systems
+    (such as Qt applications) is that behavior often depends not only
+    on the last or current event, but also the events that preceded
+    it. With statecharts, this information is easy to express.
+
+    The framework fits neatly into Qt by allowing transitions to
+    trigger on signals and \l{QEvent}s. By inserting animations into
+    the state machine, it is also easier to use the framework for
+    animating GUIs, for instance.
+
+    See \l{The State Machine Framework} documentation for more information.
+
+    \section1 Multi-Touch and Gestures
+
+    Support for multi-touch input enables users to interact with many
+    parts of a user interface at the same time, and provides the basis
+    for gestures. Additional infrastructure for gesture recognition
+    allows a sequence of touch inputs to be combined to create gestures
+    that can be used to activate features and trigger actions in an
+    application.
+
+    \image gestures.png
+
+    This new functionality brings a number of benefits:
+
+    \list
+        \o Allows users to interact with applications in more natural ways.
+        \o Simplifies finger-based interaction with UI components.
+        \o Combines support for common basic gestures and multi-touch gestures
+           in a single general framework.
+        \o Enables extensibility by design.
+    \endlist
+
+    See the QTouchEvent class documentation for more information on multi-touch
+    input and QGestureEvent for gestures.
+
+    \section1 DOM access API
+
+    Web pages and XML both have very complex document object models.
+    The W3C selector API provides a very simple way to access and
+    manipulate such structures. This API makes it intuitive to access
+    DOM, helps reuse CSS selector knowledge, and gives little
+    maintenance or footprint overhead.
+
+    \snippet webkitsnippets/webelement/main.cpp FindAll
+
+    See the QWebElement class documentation for more information.
+
+    \section1 Performance Optimizations
+
+    As always, Qt continuously strive to optimize its performance.
+    For this release, we have:
+
+    \list
+        \o Rewritten the QGraphicsView rendering algorithm.
+        \o Made QPixmapCache support efficient Key datastructure.
+        \o Reduced overhead in QNetworkAccessManager.
+        \o Added the QContiguousCache class, which provides efficient caching of
+           contiguous data.
+        \o Added support for hardware-accelerated rendering through
+        \l{OpenVG Rendering in Qt}{OpenVG}
+        \o Removed Win9x support.
+    \endlist
+
+    \section1 Graphics Effects
+
+    Effects can be used to alter the appearance of UI elements such as
+    \l{QGraphicsItem}s and \l{QWidget}s. A couple of standard effects such
+    as blurring, colorizing and drop shadow are provided, and it is
+    possible to implement custom effects.
+
+    \table
+    \row
+    \o{2,1} \img graphicseffect-plain.png
+    \row
+    \o \img graphicseffect-blur.png
+    \o \img graphicseffect-colorize.png
+    \row
+    \o \img graphicseffect-opacity.png
+    \o \img graphicseffect-drop-shadow.png
+    \endtable
+
+    See the QGraphicsEffect class documentation for more information.
+
+    \section1 XML Schema Validation
+
+    The QtXmlPatterns module can now be used to validate schemas, either
+    through C++ APIs in the Qt application, or using the xmlpatternsvalidator
+    command line utility. The implementation of XML Schema Validation supports
+    the specification version 1.0 in large parts.
+
+    \img xml-schema.png
+
+    See the \l{XML Processing} and QXmlSchema class documentation for more
+    information.
+
+    \section1 Qt3D enablers
+
+    As more of Qt, and more of the applications built on Qt go 3D,
+    API's should be provided to simplify this. Mainly, the new API
+    aims to make it more easy to create 3D applications with OpenGL.
+    It will also unify the Qt OpenGL codebase, and enable
+    cross-platform 3D codebase.
+
+    The main features of the Qt3D enablers are currently: Math
+    primitives for matrix multiplication, vectors, quaternions
+    (client-side), and API for vertex and fragment shaders, GLSL/ES.
+    Future research will, among other things include stencils,
+    scissors, vertex buffers and arrays, texture manipulation, and
+    geometry shaders.
+
+    \section1 Multimedia Services
+
+    Qt 4.6 comes with new classes for handling audio. These classes
+    provide low-level access to the system's audio system. By
+    specifying the audio format (QAudioFormat) and supplying audio
+    data through a QIODevice, you get direct access to the
+    functionality of the sound device. The API also comes with
+    functions to query audio devices for which audio formats they
+    support.
+
+    See the \l{QtMultimedia Module} documentation for more information.
+
+    \section1 New Classes, Functions, Macros, etc.
+
+    Links to new classes, functions, macros, and other items
+    introduced in Qt 4.6.
+
+    \sincelist 4.6
+
+*/
+
+/*
     \page qt4-5-intro.html
     \title What's New in Qt 4.5
@@ -445 +682 @@
     A comprehensive list of changes between Qt 4.4 and Qt 4.5 is included
     in the \c changes-4.5.0 file
-    \l{http://www.qtsoftware.com/developer/changes/changes-4.5.0}{available online}.
-    A \l{Known Issues in 4.5.1}{list of known issues} for this release is also
+    \l{http://qt.nokia.com/developer/changes/changes-4.5.0}{available online}.
+    A \l{Known Issues in 4.6.1}{list of known issues} for this release is also
     available.
 
     Changes between this release and the previous release are provided
-    in the \c{changes-4.5.1} file (also
-    \l{http://www.qtsoftware.com/developer/changes/changes-4.5.1}{available online}).
+    in the \c{changes-4.6.1} file (also
+    \l{http://qt.nokia.com/developer/changes/changes-4.6.1}{available online}).
 
     A list of other Qt 4 features can be found on the