QVirtualKeyboardAbstractInputMethod 类

用于输入法的基类。 更多...

头：	#include <QVirtualKeyboardAbstractInputMethod>
qmake:	QT += virtualkeyboard
继承：	QObject

• 所有成员列表，包括继承成员

公共函数

	QVirtualKeyboardAbstractInputMethod (QObject * parent = nullptr)
virtual	~QVirtualKeyboardAbstractInputMethod ()
virtual bool	clickPreeditText (int cursorPosition )
QVirtualKeyboardInputContext *	inputContext () const
QVirtualKeyboardInputEngine *	inputEngine () const
virtual QList<QVirtualKeyboardInputEngine::InputMode>	inputModes (const QString & locale ) = 0
virtual bool	keyEvent (Qt::Key key , const QString & text , Qt::KeyboardModifiers modifiers ) = 0
virtual QList<QVirtualKeyboardInputEngine::PatternRecognitionMode>	patternRecognitionModes () const
virtual bool	reselect (int cursorPosition , const QVirtualKeyboardInputEngine::ReselectFlags & reselectFlags )
virtual QVariant	selectionListData (QVirtualKeyboardSelectionListModel::Type type , int index , QVirtualKeyboardSelectionListModel::Role role )
virtual int	selectionListItemCount (QVirtualKeyboardSelectionListModel::Type type )
virtual void	selectionListItemSelected (QVirtualKeyboardSelectionListModel::Type type , int index )
virtual bool	selectionListRemoveItem (QVirtualKeyboardSelectionListModel::Type type , int index )
virtual QList<QVirtualKeyboardSelectionListModel::Type>	selectionLists ()
virtual bool	setInputMode (const QString & locale , QVirtualKeyboardInputEngine::InputMode inputMode ) = 0
virtual bool	setTextCase (QVirtualKeyboardInputEngine::TextCase textCase ) = 0
virtual QVirtualKeyboardTrace *	traceBegin (int traceId , QVirtualKeyboardInputEngine::PatternRecognitionMode patternRecognitionMode , const QVariantMap & traceCaptureDeviceInfo , const QVariantMap & traceScreenInfo )
virtual bool	traceEnd (QVirtualKeyboardTrace * trace )

公共槽

virtual void	reset ()
virtual void	update ()

信号

void	selectionListActiveItemChanged (QVirtualKeyboardSelectionListModel::Type type , int index )
void	selectionListChanged (QVirtualKeyboardSelectionListModel::Type type )
void	selectionListsChanged ()

详细描述

使用此类，若想要使用 C/C++ 语言实现自定义输入法。

成员函数文档编制

QVirtualKeyboardAbstractInputMethod:: QVirtualKeyboardAbstractInputMethod ( QObject * parent = nullptr)

构造输入法采用 parent .

[virtual slot] void QVirtualKeyboardAbstractInputMethod:: reset ()

This method is called by the input engine when the input method needs to be reset. The input method must reset its internal state only. The main difference to the update () method is that reset() modifies only the input method state, i.e. it must not modify the input context.

[signal] void QVirtualKeyboardAbstractInputMethod:: selectionListActiveItemChanged ( QVirtualKeyboardSelectionListModel::Type type , int index )

输入法会发射此信号当当前 index 已改变在选定列表标识通过 type .

[signal] void QVirtualKeyboardAbstractInputMethod:: selectionListChanged ( QVirtualKeyboardSelectionListModel::Type type )

The input method emits this signal when the contents of the selection list has changed. The type parameter specifies which selection list has changed.

[signal] void QVirtualKeyboardAbstractInputMethod:: selectionListsChanged ()

The input method emits this signal when the selection list types have changed. This signal will trigger a call to selectionLists () method, allowing the input method to update the selection list types.

该函数在 QtQuick.VirtualKeyboard 2.2 引入。

[virtual slot] void QVirtualKeyboardAbstractInputMethod:: update ()

This method is called by the input engine when the input method needs to be updated. The input method must close the current pre-edit text and restore its internal state to the default.

[虚拟] QVirtualKeyboardAbstractInputMethod:: ~QVirtualKeyboardAbstractInputMethod ()

销毁输入法并释放所有分配资源。

[虚拟] bool QVirtualKeyboardAbstractInputMethod:: clickPreeditText ( int cursorPosition )

调用当用户点击预编辑文本在 cursorPosition .

函数应返回 true 若它处理事件。否则输入会回退到 reselect () 为进一步处理。

该函数在 QtQuick.VirtualKeyboard 2.4 引入。

QVirtualKeyboardInputContext *QVirtualKeyboardAbstractInputMethod:: inputContext () const

返回输入法关联的输入上下文。此方法返回 NULL 若输入法不活动。

QVirtualKeyboardInputEngine *QVirtualKeyboardAbstractInputMethod:: inputEngine () const

返回输入法关联的输入引擎。此方法返回 NULL 若输入法不活动。

[pure virtual] QList < QVirtualKeyboardInputEngine::InputMode > QVirtualKeyboardAbstractInputMethod:: inputModes (const QString & locale )

返回输入方式的列表为 locale .

[pure virtual] bool QVirtualKeyboardAbstractInputMethod:: keyEvent ( Qt::Key key , const QString & text , Qt::KeyboardModifiers modifiers )

此方法的目的是, 处理由输入引擎生成的键事件。

The key parameter specifies the code of the key to handle. The key code does not distinguish between capital and non-capital letters. The text parameter contains the Unicode text for the key. The modifiers parameter contains the key modifiers that apply to key.

此方法返回 true if the key event was successfully handled. If the return value is false , the key event is redirected to the default input method for further processing.

[虚拟] QList < QVirtualKeyboardInputEngine::PatternRecognitionMode > QVirtualKeyboardAbstractInputMethod:: patternRecognitionModes () const

返回支持模式识别方式的列表。

输入引擎调用此方法，以查询支持的模式识别方式列表。

该函数在 QtQuick.VirtualKeyboard 2.0 引入。

[虚拟] bool QVirtualKeyboardAbstractInputMethod:: reselect ( int cursorPosition , const QVirtualKeyboardInputEngine::ReselectFlags & reselectFlags )

此函数试图重选的单词位于 cursorPosition 。 reselectFlags 定义应如何选择光标位置相关单词的规则。

函数返回 true 若单词被成功重选。

该函数在 QtQuick.VirtualKeyboard 2.0 引入。

[虚拟] QVariant QVirtualKeyboardAbstractInputMethod:: selectionListData ( QVirtualKeyboardSelectionListModel::Type type , int index , QVirtualKeyboardSelectionListModel::Role role )

返回选定列表项数据标识通过 type 。 role 参数指定请求何种数据。 index 参数是列表从 0 开始的索引。

[虚拟] int QVirtualKeyboardAbstractInputMethod:: selectionListItemCount ( QVirtualKeyboardSelectionListModel::Type type )

返回选定列表项数标识通过 type .

[虚拟] void QVirtualKeyboardAbstractInputMethod:: selectionListItemSelected ( QVirtualKeyboardSelectionListModel::Type type , int index )

此方法被调用当项位于 index 被用户选中。选定列表的标识是通过 type 参数。

[虚拟] bool QVirtualKeyboardAbstractInputMethod:: selectionListRemoveItem ( QVirtualKeyboardSelectionListModel::Type type , int index )

此方法被调用当项位于 index 必须被移除从字典。选定列表的标识是通过 type 参数。函数返回 true 若单词被成功移除。

[虚拟] QList < QVirtualKeyboardSelectionListModel::Type > QVirtualKeyboardAbstractInputMethod:: selectionLists ()

返回用于此输入法的选定列表的列表。

此方法由输入引擎调用，当输入法被激活且每次更新输入法提示时。输入法可以预留选定列表，通过返回期望的选定列表类型。

输入法可以请求输入引擎随时更新选定列表通过发射 selectionListsChanged () 信号。此信号由此方法的调用所触发，允许输入法更新选定列表类型。

[pure virtual] bool QVirtualKeyboardAbstractInputMethod:: setInputMode (const QString & locale , QVirtualKeyboardInputEngine::InputMode inputMode )

设置 inputMode and locale 为此输入法。返回 true 若成功。

[pure virtual] bool QVirtualKeyboardAbstractInputMethod:: setTextCase ( QVirtualKeyboardInputEngine::TextCase textCase )

更新 textCase 为此输入法。方法返回 true 若成功。

[虚拟] QVirtualKeyboardTrace *QVirtualKeyboardAbstractInputMethod:: traceBegin ( int traceId , QVirtualKeyboardInputEngine::PatternRecognitionMode patternRecognitionMode , const QVariantMap & traceCaptureDeviceInfo , const QVariantMap & traceScreenInfo )

此方法被调用当开始跟踪交互采用指定 patternRecognitionMode 。跟踪的唯一标识是通过 traceId 。 traceCaptureDeviceInfo 提供源设备的有关信息和 traceScreenInfo 提供屏幕上下文的有关信息。

若输入法接受事件且想要捕获跟踪输入，它必须返回新的 QVirtualKeyboardTrace 对象。此对象必须保持有效直到 traceEnd () 方法被调用。若 QVirtualKeyboardTrace 被渲染在屏幕中，它仍然在那里直到 QVirtualKeyboardTrace 对象被销毁。

该函数在 QtQuick.VirtualKeyboard 2.0 引入。

[虚拟] bool QVirtualKeyboardAbstractInputMethod:: traceEnd ( QVirtualKeyboardTrace * trace )

此方法被调用，当跟踪交互结束时。输入法应销毁 trace 对象在某个时刻，在调用此函数后。见 用于输入法的跟踪 API 如何访问聚合数据。

方法返回 true 如果接受跟踪交互。

该函数在 QtQuick.VirtualKeyboard 2.0 引入。

内容

• 公共函数

• 公共槽

• 信号

• 详细描述