AtkImage

ATK Library Reference Manual
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Description

AtkImage should be implemented by AtkObject subtypes on behalf of components which display image/pixmap information onscreen, and which provide information (other than just widget borders, etc.) via that image content. For instance, icons, buttons with icons, toolbar elements, and image viewing panes typically should implement AtkImage.

AtkImage primarily provides two types of information: coordinate information (useful for screen review mode of screenreaders, and for use by onscreen magnifiers), and descriptive information. The descriptive information is provided for alternative, text-only presentation of the most significant information present in the image.

Details

struct AtkImage

struct AtkImage;

struct AtkImageIface

struct AtkImageIface
{
  GTypeInterface parent;
  void          	( *get_image_position)    (AtkImage		 *image,
                                                   gint                  *x,
				                   gint	                 *y,
    			                           AtkCoordType	         coord_type);
  G_CONST_RETURN gchar* ( *get_image_description) (AtkImage              *image);
  void                  ( *get_image_size)        (AtkImage              *image,
                                                   gint                  *width,
                                                   gint                  *height);
  gboolean              ( *set_image_description) (AtkImage              *image,
                                                   const gchar           *description);

  AtkFunction           pad1;
  AtkFunction           pad2;
};

atk_image_get_image_position ()

void        atk_image_get_image_position    (AtkImage *image,
                                             gint *x,
                                             gint *y,
                                             AtkCoordType coord_type);

Gets the position of the image in the form of a point specifying the images top-left corner. The values of x and y are returned as -1 if the values cannot be obtained.

`image` :	a GObject instance that implements AtkImageIface
`x` :	address of gint to put x coordinate position
`y` :	address of gint to put y coordinate position
`coord_type` :	specifies whether the coordinates are relative to the screen or to the components top level window

atk_image_get_image_description ()

G_CONST_RETURN gchar* atk_image_get_image_description
                                            (AtkImage *image);

Get a textual description of this image.

`image` :	a GObject instance that implements AtkImageIface
Returns :	a string representing the image description

atk_image_set_image_description ()

gboolean    atk_image_set_image_description (AtkImage *image,
                                             const gchar *description);

Sets the textual description for this image.

`image` :	a GObject instance that implements AtkImageIface
`description` :	a string description to set for `image`
Returns :	boolean TRUE, or FALSE if operation could not be completed.

atk_image_get_image_size ()

void        atk_image_get_image_size        (AtkImage *image,
                                             gint *width,
                                             gint *height);

Get the width and height in pixels for the specified image. The values of width and height are returned as -1 if the values cannot be obtained.

`image` :	a GObject instance that implements AtkImageIface
`width` :	filled with the image width
`height` :	filled with the image height