class QAccessibleTextInterface¶

The QAccessibleTextInterface class implements support for text handling. More…

Synopsis¶

Virtual methods¶

def addSelection()
def attributes()
def characterCount()
def characterRect()
def cursorPosition()
def offsetAtPoint()
def removeSelection()
def scrollToSubstring()
def selection()
def selectionCount()
def setCursorPosition()
def setSelection()
def text()
def textAfterOffset()
def textAtOffset()
def textBeforeOffset()

Note

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Detailed Description¶

This interface corresponds to the IAccessibleText interface. It should be implemented for widgets that display more text than a plain label. Labels should be represented by only QAccessibleInterface and return their text as name ( text() with Name as type). The QAccessibleTextInterface is typically for text that a screen reader might want to read line by line, and for widgets that support text selection and input. This interface is, for example, implemented for QLineEdit.

IAccessible2 Specification

abstract addSelection(startOffset, endOffset)¶

Parameters:

startOffset – int
endOffset – int

Select the text from startOffset to endOffset. The startOffset is the first character that will be selected. The endOffset is the first character that will not be selected.

When the object supports multiple selections (e.g. in a word processor), this adds a new selection, otherwise it replaces the previous selection.

The selection will be endOffset - startOffset characters long.

abstract attributes(offset, startOffset, endOffset)¶

Parameters:

offset – int
startOffset – int
endOffset – int

Return type:

str

Returns the text attributes at the position offset. In addition the range of the attributes is returned in startOffset and endOffset.

abstract characterCount()¶

Return type:: int

Returns the length of the text (total size including spaces).

abstract characterRect(offset)¶

Parameters:: offset – int
Return type:: QRect

Returns the position and size of the character at position offset in screen coordinates.

abstract cursorPosition()¶

Return type:: int

Returns the current cursor position.

See also

setCursorPosition()

abstract offsetAtPoint(point)¶

Parameters:: point – QPoint
Return type:: int

Returns the offset of the character at the point in screen coordinates.

abstract removeSelection(selectionIndex)¶

Parameters:: selectionIndex – int

Clears the selection with index selectionIndex.

abstract scrollToSubstring(startIndex, endIndex)¶

Parameters:

startIndex – int
endIndex – int

Ensures that the text between startIndex and endIndex is visible.

abstract selection(selectionIndex, startOffset, endOffset)¶

Parameters:

selectionIndex – int
startOffset – int
endOffset – int

Returns a selection. The size of the selection is returned in startOffset and endOffset. If there is no selection both startOffset and endOffset are None.

The accessibility APIs support multiple selections. For most widgets though, only one selection is supported with selectionIndex equal to 0.

See also

setSelection()

abstract selectionCount()¶

Return type:: int

Returns the number of selections in this text.

abstract setCursorPosition(position)¶

Parameters:: position – int

Moves the cursor to position.

See also

cursorPosition()

abstract setSelection(selectionIndex, startOffset, endOffset)¶

Parameters:

selectionIndex – int
startOffset – int
endOffset – int

Set the selection selectionIndex to the range from startOffset to endOffset.

See also

selection() addSelection() removeSelection()

abstract text(startOffset, endOffset)¶

Parameters:

startOffset – int
endOffset – int

Return type:

str

Returns the text from startOffset to endOffset. The startOffset is the first character that will be returned. The endOffset is the first character that will not be returned.

textAfterOffset(offset, boundaryType, startOffset, endOffset)¶

Parameters:

offset – int
boundaryType – TextBoundaryType
startOffset – int
endOffset – int

Return type:

str

Returns the text item of type boundaryType that is right after offset offset and sets startOffset and endOffset values to the start and end positions of that item; returns an empty string if there is no such an item. Sets startOffset and endOffset values to -1 on error.

This default implementation is provided for small text edits. A word processor or text editor should provide their own efficient implementations. This function makes no distinction between paragraphs and lines.

Note

this function can not take the cursor position into account. By convention an offset of -2 means that this function should use the cursor position as offset. Thus an offset of -2 must be converted to the cursor position before calling this function. An offset of -1 is used for the text length and custom implementations of this function have to return the result as if the length was passed in as offset.

textAtOffset(offset, boundaryType, startOffset, endOffset)¶

Parameters:

offset – int
boundaryType – TextBoundaryType
startOffset – int
endOffset – int

Return type:

str

Returns the text item of type boundaryType at offset offset and sets startOffset and endOffset values to the start and end positions of that item; returns an empty string if there is no such an item. Sets startOffset and endOffset values to -1 on error.

Note

textBeforeOffset(offset, boundaryType, startOffset, endOffset)¶

Parameters:

offset – int
boundaryType – TextBoundaryType
startOffset – int
endOffset – int

Return type:

str

Returns the text item of type boundaryType that is close to offset offset and sets startOffset and endOffset values to the start and end positions of that item; returns an empty string if there is no such an item. Sets startOffset and endOffset values to -1 on error.

Note