nsIAccessibleImage 编辑

accessible/public/nsIAccessibleImage.idlScriptable This interface allows in-process accessibility clients to retrieve information about an image. 1.0 66 Introduced Gecko 1.9 Inherits from: nsISupports Last changed in Gecko 1.9 (Firefox 3)

Method overview

void getImagePosition(in unsigned long coordType, out long x, out long y);

void getImageSize(out long width, out long height);

Methods

getImagePosition()

Returns the coordinates of the image accessible.

This method is the same as nsIAccessible.getBounds() excepting coordinate origin parameter.

void getImagePosition(
  in unsigned long coordType,
  out long x,
  out long y
);

Parameters

coordType

Specifies coordinates origin (for available constants refer to nsIAccessibleCoordinateType).

x

The x coordinate of the image accessible position.

y

The y coordinate of the image accessible position.

Exceptions thrown

NS_ERROR_FAILURE

Indicates that the accessible is unattached from the accessible tree.

getImageSize()

Returns the size of the image accessible.

This method is the same as nsIAccessible.getBounds().

void getImageSize(
  out long width,
  out long height
);

Parameters

width

The width of the image accessible.

height

The height of the image accessible.

Exceptions thrown

NS_ERROR_FAILURE

Indicates that the accessible is unattached from the accessible tree.