QInputMethod class provides access to the active text input method. 更多...
| 头： | #include <QInputMethod> |
| qmake: | QT += gui |
| 继承： | QObject |
| enum | 动作 { Click, ContextMenu } |
|
|
| QRectF | anchorRectangle () const |
| QRectF | cursorRectangle () const |
| Qt::LayoutDirection | inputDirection () const |
| QRectF | inputItemClipRectangle () const |
| QRectF | inputItemRectangle () const |
| QTransform | inputItemTransform () const |
| bool | isAnimating () const |
| bool | isVisible () const |
| QRectF | keyboardRectangle () const |
| QLocale | locale () const |
| void | setInputItemRectangle (const QRectF & rect ) |
| void | setInputItemTransform (const QTransform & transform ) |
| void | setVisible (bool visible ) |
| void | commit () |
| void | hide () |
| void | invokeAction (Action a , int cursorPosition ) |
| void | reset () |
| void | show () |
| void | update (Qt::InputMethodQueries queries ) |
| void | anchorRectangleChanged () |
| void | animatingChanged () |
| void | cursorRectangleChanged () |
| void | inputDirectionChanged (Qt::LayoutDirection newDirection ) |
| void | inputItemClipRectangleChanged () |
| void | keyboardRectangleChanged () |
| void | localeChanged () |
| void | visibleChanged () |
| QVariant | queryFocusObject (Qt::InputMethodQuery query , QVariant argument ) |
QInputMethod class provides access to the active text input method.
QInputMethod is used by the text editors for integrating to the platform text input methods and more commonly by application views for querying various text input method-related information like virtual keyboard visibility and keyboard dimensions.
Qt Quick also provides access to
QInputMethod
in QML through
Qt 全局对象
as
Qt.inputMethod
特性。
指示由用户履行的动作种类。
| 常量 | 值 | 描述 |
|---|---|---|
QInputMethod::Click
|
0
|
A normal click/tap |
QInputMethod::ContextMenu
|
1
|
A context menu click/tap (e.g. right-button or tap-and-hold) |
另请参阅 invokeAction ().
输入项在窗口坐标中的锚点矩形。
Anchor rectangle is often used by various text editing controls like text prediction popups for following the text selection.
访问函数：
| QRectF | anchorRectangle () const |
通知程序信号：
| void | anchorRectangleChanged () |
true 当打开 (或关闭) 虚拟键盘时。
动画为 false 当完全打开 (或关闭) 键盘时。当
animating
is
true
and
visibility
is
true
键盘正被打开。当
animating
is
true
and
visibility
为 false 键盘正被关闭。
访问函数：
| bool | isAnimating () const |
通知程序信号：
| void | animatingChanged () |
输入项在窗口坐标中的光标矩形。
Cursor rectangle is often used by various text editing controls like text prediction popups for following the text being typed.
访问函数：
| QRectF | cursorRectangle () const |
通知程序信号：
| void | cursorRectangleChanged () |
当前输入方向。
访问函数：
| Qt::LayoutDirection | inputDirection () const |
通知程序信号：
| void | inputDirectionChanged (Qt::LayoutDirection newDirection ) |
输入项在窗口坐标中的裁剪矩形。
The clipped input rectangle is often used by various input methods to determine how much screen real estate is available for the input method (e.g. Virtual Keyboard).
访问函数：
| QRectF | inputItemClipRectangle () const |
通知程序信号：
| void | inputItemClipRectangleChanged () |
虚拟键盘在窗口坐标中的几何体。
This might be an empty rectangle if it is not possible to know the geometry of the keyboard. This is the case for a floating keyboard on android.
访问函数：
| QRectF | keyboardRectangle () const |
通知程序信号：
| void | keyboardRectangleChanged () |
当前输入区域设置。
访问函数：
| QLocale | locale () const |
通知程序信号：
| void | localeChanged () |
虚拟键盘在屏幕上的可见性
Input method visibility remains false for devices with no virtual keyboards.
访问函数：
| bool | isVisible () const |
通知程序信号：
| void | visibleChanged () |
[slot]
void
QInputMethod::
commit
()
Commits the word user is currently composing to the editor. The function is mostly needed by the input methods with text prediction features and by the methods where the script used for typing characters is different from the script that actually gets appended to the editor. Any kind of action that interrupts the text composing needs to flush the composing state by calling the commit() function, for example when the cursor is moved elsewhere.
[slot]
void
QInputMethod::
hide
()
请求关闭虚拟键盘。
Normally applications should not need to call this function, keyboard should automatically close when the text editor loses focus, for example when the parent view is closed.
返回在输入项坐标中的输入项几何体。
该函数在 Qt 5.1 引入。
另请参阅 setInputItemRectangle ().
返回从输入项坐标到窗口坐标的变换。
另请参阅 setInputItemTransform ().
[slot]
void
QInputMethod::
invokeAction
(
动作
a
,
int
cursorPosition
)
Called by the input item when the word currently being composed is tapped by the user, as indicated by the action a 和给定 cursorPosition . Input methods often use this information to offer more word suggestions to the user.
[static]
QVariant
QInputMethod::
queryFocusObject
(
Qt::InputMethodQuery
query
,
QVariant
argument
)
发送 query 到当前聚焦对象采用参数 argument 并返回结果。
[slot]
void
QInputMethod::
reset
()
Resets the input method state. For example, a text editor normally calls this method before inserting a text to make widget ready to accept a text.
输入法自动重置，当聚焦编辑器改变时。
把输入项的几何体设为 rect , in input item coordinates. This needs to be updated by the focused window like QQuickCanvas whenever item is moved inside the scene, or focus is changed.
该函数在 Qt 5.1 引入。
另请参阅 inputItemRectangle ().
Sets the transformation from input item coordinates to window coordinates to be transform . Item transform needs to be updated by the focused window like QQuickCanvas whenever item is moved inside the scene.
另请参阅 inputItemTransform ().
控制键盘的可见性。相当于调用
show
() (若
visible
is
true
) 或
hide
() (若
visible
is
false
).
另请参阅 isVisible (), show ()，和 hide ().
[slot]
void
QInputMethod::
show
()
请求打开虚拟键盘。若平台不提供虚拟键盘，可见性仍然为 false。
Normally applications should not need to call this function, keyboard should automatically open when the text editor gains focus.
[slot]
void
QInputMethod::
update
(
Qt::InputMethodQueries
queries
)
Called by the input item to inform the platform input methods when there has been state changes in editor's input method query attributes. When calling the function queries parameter has to be used to tell what has changes, which input method can use to make queries for attributes it's interested with QInputMethodQueryEvent .
In particular calling update whenever the cursor position changes is important as that often causes other query attributes like surrounding text and text selection to change as well. The attributes that often change together with cursor position have been grouped in Qt::ImQueryInput value for convenience.