Qt 5.10 的新功能

Qt 5.10 中的新特征

Qt Connectivity 模块

• The UWP Bluetooth and Bluetooth LE backends can now be used on Windows 10.

Qt Graphical Effects 模块

• Added support for effects in core profile OpenGL contexts.

Qt GUI 模块

• Added the cross-platform Vulkan enablers, QVulkanInstance , QWindow with type VulkanSurface, and QVulkanWindow . These enablers are for Windows, Linux (xcb), and Android (level 23+).
• Added new flags and functions to QSurfaceFormat and QOpenGLWidget , to request sRGB-capable default/backing framebuffers.
• Added the cross-platform enablers for OpenGL ES 3.2 API, which are now accessible through QOpenGLExtraFunctions .
• Added support for more than 2 Gigabyte of pixel data in QImage .
• 添加 QFont::PreferNoShaping style strategy.

Qt Network 模块

• Upgraded OpenSSL back-end to use library v1.1.
• Persistent store of HSTS policies in QNAM ( QSettings -based).

Qt Quick 模块

• Added a shapes plugin, providing a Shape type under QtQuick .Shapes 1.0, which enables adding stroked and filled paths into Qt Quick scenes. Such shapes are rendered either by generating geometry or by using the GL_NV_path_rendering extension.
• Added the Qt.labs.handlers plugin (tech. preview), providing TapHandler , PinchHandler ，和 DragHandler . These are lightweight objects for handling events from the mouse or the touchscreen in a device-agnostic way.

  注意： The plugin is available as a technology preview so it could could change in future releases.

• Added support for multi-sample framebuffers to QQuickItem layers using the layer.samples property.
• 添加 font.kerning and font.preferShaping properties for advanced control over the font shaping subsystem.
• 添加 advance property to Text to retrieve the typographical advance width.
• Added Image element to enable direct loading of ETC1 and ETC2 compressed textures from .pkm files on platforms where ETC1/2 are supported.

Qt Quick Controls 2 模块

• Added support for effects in core profile OpenGL contexts.
• Added new QML types: 动作 , ActionGroup ，和 MenuBar .
• Added these new styles:
  • The Fusion style offers a platform agnostic desktop-oriented look'n'feel.
  • The Imagine style is based on image assets that can be provided using a predefined naming convention.
• Added actions support for it in:
  • buttons, delegates, menus,
  • exclusive button groups,
  • nested menus, and cascading sub-menus.
• Added support for:
  • wrapping SpinBox ,
  • propagating palettes (only Fusion & Imagine styles for now),
  • specifying the default font and palette in qtquickcontrols2.conf,
  • and preliminary support for mnemonics in MenuItem (only shortcut functionality).
• Added the following new members:
  • TabBar::index , tabBar ，和 position attached properties.
  • Dialog::applied (), reset (), discarded ()，和 helpRequested () 信号。
  • Dialog::standardButton () 方法。
  • StackView::empty 特性。
  • Menu::popup () 和 dismiss () 方法。
  • Menu::actionAt (), addAction (), insertAction (), removeAction ()，和 takeAction () 方法。
  • Menu::menuAt (), addMenu (), insertMenu (), removeMenu ()，和 takeMenu () 方法。
  • Menu::count and currentIndex 特性。
  • MenuItem::menu 特性。
  • Container::removeItem(Item) and takeItem(int) methods ( TabBar and SwipeView ).
  • Popup::enabled , mirrored ，和 opened 特性。
  • horizontal and vertical properties to all controls that have the orientation 特性： RangeSlider , Slider , ScrollBar , ScrollIndicator ，和 SwipeView .
• Other improvements:
  • Added support for specifying a transition for StackView::clear ().
  • Enabled support for ApplicationWindow::activeFocusControl attached property for a plain Window .
  • Enabled background dimming for popups without ApplicationWindow .
  • Updated Material style for DialogButtonBox to use the Android button layout.
  • Updated default style Slider and RangeSlider to visually indicate the progress/range.

Qt SerialBus 模块

• Added local echo flag to QCanBusFrame to mark frames that are sent from the local system to the CAN bus.

Qt Virtual Keyboard 模块

• Added the keyboard layouts for Hebrew, Serbian, Hungarian, Czech, Croatian, Bulgarian, Greek, Estonian, and Dutch.
• Added handwriting support for Farsi, Arabic, and CJK (Chinese/Japanese/Korean).
• Added new component ( InputModeKey ) for input mode switch.

Qt WebEngine 模块

• Updated to be based on Chromium 60.
• Added pause/resume functionality to download items.
• Added settings for blocking JavaScript focus and hiding scrollbars.
• Updated QWebEnginePage with more WebActions, which were supported by QWebPage earlier.
• Added QWebEnginePage::download for triggering downloads.

Qt Widgets 模块

• Added support for embedding a window into a QWidget on Android using QWidget::createWindowContainer ().
• Added support for rendering and reading back (grabbing) offscreen content using QOpenGLWidget .
• 添加 AA_DisableWindowContextHelpButton attribute that prevents the automatic "What's this" button on dialogs on Windows.
• 添加 tabStopDistance 特性在 QTextOption , QTextEdit ，和 QPlainTextEdit .
• 添加 selectionEnd() , selectionLength() to QLineEdit , complementing selectionStart() .
• 添加 QInputDialog::setDoubleStep to enable changing of the step amount for getDouble() .
• 添加 isPersistentEditorOpen() to QAbstractItemView , QTreeWidget , QTableWidget ，和 QListWidget .
• 添加新 QStyle::StyleHint , SH_TitleBar_ShowToolTipsOnButtons .
• Added support for specifying custom internal texture formats in QOpenGLWidget .

新模块

• Qt Network Authorization - Provides support for OAuth1 and OAuth2.
• Qt Speech - Enables text-to-speech in Qt Applications.

These modules were previously released as technology preview and are now fully supported Qt add-on modules.

技术预览模块

• Qt Remote Objects (TP2) - Sharing QObject interfaces (signals, slots, and properties) between processes or devices.
• Qt WebGL Streaming Plugin - Enables streaming Qt application to a web browser over the network.

弃用功能

• Qt Script

Deprecated modules are still included in Qt 5.10, but are considered for removal in future releases.

API 变化列表

以下页面包含 Qt 5.10 中的 API 变化列表：

• Qt 5.10 中的新类和函数
• 过时类

其它 Qt 5 发行的补充

• Qt 5.9 的新功能
• Qt 5.8 的新功能
• Qt 5.7 的新功能
• Qt 5.6 的新功能
• Qt 5.5 的新功能
• Qt 5.4 的新功能
• Qt 5.3 的新功能
• Qt 5.2 的新功能
• Qt 5.1 的新功能
• Qt 5.0 的新功能

内容

• Qt 5.10 中的新特征

• Qt Connectivity 模块

• Qt Graphical Effects 模块

• Qt GUI 模块

• Qt Network 模块

• Qt Quick 模块

• Qt Quick Controls 2 模块

• Qt SerialBus 模块

• Qt Virtual Keyboard 模块

• Qt WebEngine 模块

• Qt Widgets 模块

• 新模块

• 技术预览模块

• 弃用功能

• API 变化列表

• 其它 Qt 5 发行的补充