AccessibleComponent Interface

Name

AccessibleComponent Interface -- 

Synopsis



enum        AccessibleCoordType;
enum        AccessibleComponentLayer;
void        AccessibleComponent_ref         (AccessibleComponent *obj);
void        AccessibleComponent_unref       (AccessibleComponent *obj);
SPIBoolean  AccessibleComponent_contains    (AccessibleComponent *obj,
                                             long int x,
                                             long int y,
                                             AccessibleCoordType ctype);
Accessible* AccessibleComponent_getAccessibleAtPoint
                                            (AccessibleComponent *obj,
                                             long int x,
                                             long int y,
                                             AccessibleCoordType ctype);
void        AccessibleComponent_getExtents  (AccessibleComponent *obj,
                                             long int *x,
                                             long int *y,
                                             long int *width,
                                             long int *height,
                                             AccessibleCoordType ctype);
void        AccessibleComponent_getPosition (AccessibleComponent *obj,
                                             long int *x,
                                             long int *y,
                                             AccessibleCoordType ctype);
void        AccessibleComponent_getSize     (AccessibleComponent *obj,
                                             long int *width,
                                             long int *height);
AccessibleComponentLayer AccessibleComponent_getLayer
                                            (AccessibleComponent *obj);
short       AccessibleComponent_getMDIZOrder
                                            (AccessibleComponent *obj);
SPIBoolean  AccessibleComponent_grabFocus   (AccessibleComponent *obj);

Description

Details

enum AccessibleCoordType

typedef enum {
  SPI_COORD_TYPE_SCREEN,
  SPI_COORD_TYPE_WINDOW
} AccessibleCoordType;


enum AccessibleComponentLayer

typedef enum {
    SPI_LAYER_INVALID,
    SPI_LAYER_BACKGROUND,
    SPI_LAYER_CANVAS,
    SPI_LAYER_WIDGET,
    SPI_LAYER_MDI,
    SPI_LAYER_POPUP,
    SPI_LAYER_OVERLAY,
    SPI_LAYER_WINDOW,
    SPI_LAYER_LAST_DEFINED	
} AccessibleComponentLayer;

SPI_LAYER_INVALID

The layer cannot be determined or is somehow undefined.

SPI_LAYER_BACKGROUND

Component belongs to the destop background.

SPI_LAYER_CANVAS

Component is a canvas backdrop or drawing area.

SPI_LAYER_WIDGET

Component is a 'normal' widget.

SPI_LAYER_MDI

Component is drawn in the MDI layer and may have valid Z-information relative to other MDI-layer components.

SPI_LAYER_POPUP

Component is in the popup layer, above other widgets and MDI components.

SPI_LAYER_OVERLAY

Component is in the overlay plane - this value is reserved for future use.

SPI_LAYER_WINDOW

Component is in the window layer and have valid Z-information relative to other window-layer components.

SPI_LAYER_LAST_DEFINED

Used to determine the last valid value in the enum, should not be encountered.


AccessibleComponent_ref ()

void        AccessibleComponent_ref         (AccessibleComponent *obj);

Increment the reference count for an AccessibleComponent.

obj :

a pointer to an object implementing AccessibleComponent on which to operate.


AccessibleComponent_unref ()

void        AccessibleComponent_unref       (AccessibleComponent *obj);

Decrement the reference count for an AccessibleComponent.

obj :

a pointer to the object implementing AccessibleComponent on which to operate.


AccessibleComponent_contains ()

SPIBoolean  AccessibleComponent_contains    (AccessibleComponent *obj,
                                             long int x,
                                             long int y,
                                             AccessibleCoordType ctype);

Query whether a given AccessibleComponent contains a particular point.

obj :

a pointer to the AccessibleComponent to query.

x :

a long specifying the x coordinate in question.

y :

a long specifying the y coordinate in question.

ctype :

the desired coordinate system of the point (x, y) (e.g. CSPI_COORD_TYPE_WINDOW, CSPI_COORD_TYPE_SCREEN).

Returns :

a TRUE if the specified component contains the point (x, y), otherwise FALSE.


AccessibleComponent_getAccessibleAtPoint ()

Accessible* AccessibleComponent_getAccessibleAtPoint
                                            (AccessibleComponent *obj,
                                             long int x,
                                             long int y,
                                             AccessibleCoordType ctype);

Get the accessible child at a given coordinate within an AccessibleComponent.

obj :

a pointer to the AccessibleComponent to query.

x :

a long specifying the x coordinate of the point in question.

y :

a long specifying the y coordinate of the point in question.

ctype :

the coordinate system of the point (x, y) (e.g. CSPI_COORD_TYPE_WINDOW, CSPI_COORD_TYPE_SCREEN).

Returns :

a pointer to an Accessible child of the specified component which contains the point (x, y), or NULL of no child contains the point.


AccessibleComponent_getExtents ()

void        AccessibleComponent_getExtents  (AccessibleComponent *obj,
                                             long int *x,
                                             long int *y,
                                             long int *width,
                                             long int *height,
                                             AccessibleCoordType ctype);

Get the bounding box of the specified AccessibleComponent.

obj :

a pointer to the AccessibleComponent to query.

x :

a pointer to a long into which the minimum x coordinate will be returned.

y :

a pointer to a long into which the minimum y coordinate will be returned.

width :

a pointer to a long into which the x extents (width) will be returned.

height :

a pointer to a long into which the y extents (height) will be returned.

ctype :

the desired coordinate system into which to return the results, (e.g. CSPI_COORD_TYPE_WINDOW, CSPI_COORD_TYPE_SCREEN).


AccessibleComponent_getPosition ()

void        AccessibleComponent_getPosition (AccessibleComponent *obj,
                                             long int *x,
                                             long int *y,
                                             AccessibleCoordType ctype);

Get the minimum x and y coordinates of the specified AccessibleComponent.

obj :

a pointer to the AccessibleComponent to query.

x :

a pointer to a long into which the minimum x coordinate will be returned.

y :

a pointer to a long into which the minimum y coordinate will be returned.

ctype :

the desired coordinate system into which to return the results, (e.g. CSPI_COORD_TYPE_WINDOW, CSPI_COORD_TYPE_SCREEN).


AccessibleComponent_getSize ()

void        AccessibleComponent_getSize     (AccessibleComponent *obj,
                                             long int *width,
                                             long int *height);

Get the size of the specified AccessibleComponent.

obj :

a pointer to the AccessibleComponent to query.

width :

a pointer to a long into which the x extents (width) will be returned.

height :

a pointer to a long into which the y extents (height) will be returned.


AccessibleComponent_getLayer ()

AccessibleComponentLayer AccessibleComponent_getLayer
                                            (AccessibleComponent *obj);

Query which layer the component is painted into, to help determine its visibility in terms of stacking order.

obj :

a pointer to the AccessibleComponent to query.

Returns :

the AccessibleComponentLayer into which this component is painted.


AccessibleComponent_getMDIZOrder ()

short       AccessibleComponent_getMDIZOrder
                                            (AccessibleComponent *obj);

Query the z stacking order of a component which is in the MDI or window layer. (Bigger z-order numbers mean nearer the top)

obj :

a pointer to the AccessibleComponent to query.

Returns :

a short integer indicating the stacking order of the component in the MDI layer, or -1 if the component is not in the MDI layer.


AccessibleComponent_grabFocus ()

SPIBoolean  AccessibleComponent_grabFocus   (AccessibleComponent *obj);

Attempt to set the keyboard input focus to the specified AccessibleComponent.

obj :

a pointer to the AccessibleComponent on which to operate.

Returns :

TRUE if successful, FALSE otherwise.