atk Constants

atk Constants — the built-in constants of the atk module

Synopsis

Atk Coord Type Constants
Atk Layer Constants
Atk Relation Type Constants
Atk Role Constants
Atk State Type Constants
Atk Text Attribute Constants
Atk Text Boundary Constants
Atk Text Clip Type Constants

Description

Atk Coord Type Constants

The Atk Coord Type constants specify how xy coordinates are to be interpreted. Used by methods such as atk.Component.get_position() and atk.Text.get_character_extents()

atk.XY_SCREEN

specifies xy coordinates relative to the screen

atk.XY_WINDOW

specifies xy coordinates relative to the widget's top-level window

Atk Layer Constants

The Atk Layer constants specify the layer of a component. These enumerated "layer values" are used when determining which UI rendering layer a component is drawn into, which can help in making determinations of when components occlude one another.

atk.LAYER_INVALID

The object does not have a layer

atk.LAYER_BACKGROUND

This layer is reserved for the desktop background

atk.LAYER_CANVAS

This layer is used for Canvas components

atk.LAYER_WIDGET

This layer is normally used for components

atk.LAYER_MDI

This layer is used for layered components

atk.LAYER_POPUP

This layer is used for popup components, such as menus

atk.LAYER_OVERLAY

This layer is reserved for future use.

atk.LAYER_WINDOW

This layer is used for toplevel windows.

Atk Relation Type Constants

The Atk Relation Type constants specify the type of the relation.

atk.RELATION_NULL

Not used, represents "no relationship" or an error condition.

atk.RELATION_CONTROLLED_BY

Indicates an object controlled by one or more target objects.

atk.RELATION_CONTROLLER_FOR

Indicates an object is an controller for one or more target objects.

atk.RELATION_LABEL_FOR

Indicates an object is a label for one or more target objects.

atk.RELATION_LABELLED_BY

Indicates an object is labelled by one or more target objects.

atk.RELATION_MEMBER_OF

Indicates an object is a member of a group of one or more target objects.

atk.RELATION_NODE_CHILD_OF

Indicates an object is a cell in a treetable which is displayed because a cell in the same column is expanded and identifies that cell.

atk.RELATION_FLOWS_TO

Indicates that the object has content that flows logically to another atk.Object in a sequential way, (for instance text-flow).

atk.RELATION_FLOWS_FROM

Indicates that the object has content that flows logically from another atk.Object in a sequential way, (for instance text-flow).

atk.RELATION_SUBWINDOW_OF

Indicates a subwindow attached to a component but otherwise has no connection in the UI hierarchy to that component.

atk.RELATION_EMBEDS

Indicates that the object visually embeds another object's content, i.e. this object's content flows around another's content.

atk.RELATION_EMBEDDED_BY

Inverse of atk.RELATION_EMBEDS, indicates that this object's content is visualy embedded in another object.

atk.RELATION_POPUP_FOR

Indicates that an object is a popup for another object.

atk.RELATION_PARENT_WINDOW_OF

Indicates that an object is a parent window of another object.

atk.RELATION_LAST_DEFINED

Not used, this value indicates the end of the enumeration.

Atk Role Constants

The Atk Role constants describes the role of an object. These are the built-in enumerated roles that UI components can have in ATK. Other roles may be added at runtime, so an AtkRole >= atk.ROLE_LAST_DEFINED is not necessarily an error.

atk.ROLE_INVALID

Invalid role

atk.ROLE_ACCEL_LABEL

A label which represents an accelerator

atk.ROLE_ALERT

An object which is an alert to the user

atk.ROLE_ANIMATION

An object which is an animated image

atk.ROLE_ARROW

An arrow in one of the four cardinal directions

atk.ROLE_CALENDAR

An object that displays a calendar and allows the user to select a date

atk.ROLE_CANVAS

An object that can be drawn into and is used to trap events

atk.ROLE_CHECK_BOX

A choice that can be checked or unchecked and provides a separate indicator for the current state

atk.ROLE_CHECK_MENU_ITEM

A menu item with a check box

atk.ROLE_COLOR_CHOOSER

A specialized dialog that lets the user choose a color

atk.ROLE_COLUMN_HEADER

The header for a column of data

atk.ROLE_COMBO_BOX

A list of choices the user can select from

atk.ROLE_DATE_EDITOR

An object whose purpose is to allow a user to edit a date

atk.ROLE_DESKTOP_ICON

An inconifed internal frame within a DESKTOP_PANE

atk.ROLE_DESKTOP_FRAME

A pane that supports internal frames and iconified versions of those internal frames

atk.ROLE_DIAL

An object whose purpose is to allow a user to set a value

atk.ROLE_DIALOG

A top level window with title bar and a border

atk.ROLE_DIRECTORY_PANE

A pane that allows the user to navigate through and select the contents of a directory

atk.ROLE_DRAWING_AREA

An object used for drawing custom user interface elements

atk.ROLE_FILE_CHOOSER

A specialized dialog that lets the user choose a file

atk.ROLE_FILLER

A object that fills up space in a user interface

atk.ROLE_FONT_CHOOSER

A specialized dialog that lets the user choose a font

atk.ROLE_FRAME

A top level window with a title bar, border, menubar, etc.

atk.ROLE_GLASS_PANE

A pane that is guaranteed to be painted on top of all panes beneath it

atk.ROLE_HTML_CONTAINER

A document container for HTML, whose children represent the document content

atk.ROLE_ICON

A small fixed size picture, typically used to decorate components

atk.ROLE_IMAGE

An object whose primary purpose is to display an image

atk.ROLE_INTERNAL_FRAME

A frame-like object that is clipped by a desktop pane

atk.ROLE_LABEL

An object used to present an icon or short string in an interface

atk.ROLE_LAYERED_PANE

A specialized pane that allows its children to be drawn in layers, providing a form of stacking order

atk.ROLE_LIST

An object that presents a list of objects to the user and allows the user to select one or more of them

atk.ROLE_LIST_ITEM

An object that represents an element of a list

atk.ROLE_MENU

An object usually found inside a menu bar that contains a list of actions the user can choose from

atk.ROLE_MENU_BAR

An object usually drawn at the top of the primary dialog box of an application that contains a list of menus the user can choose from

atk.ROLE_MENU_ITEM

An object usually contained in a menu that presents an action the user can choose

atk.ROLE_OPTION_PANE

A specialized pane whose primary use is inside a DIALOG

atk.ROLE_PAGE_TAB

An object that is a child of a page tab list

atk.ROLE_PAGE_TAB_LIST

An object that presents a series of panels (or page tabs), one at a time, through some mechanism provided by the object

atk.ROLE_PANEL

A generic container that is often used to group objects

atk.ROLE_PASSWORD_TEXT

A text object uses for passwords, or other places where the text content is not shown visibly to the user

atk.ROLE_POPUP_MENU

A temporary window that is usually used to offer the user a list of choices, and then hides when the user selects one of those choices

atk.ROLE_PROGRESS_BAR

An object used to indicate how much of a task has been completed

atk.ROLE_PUSH_BUTTON

An object the user can manipulate to tell the application to do something

atk.ROLE_RADIO_BUTTON

A specialized check box that will cause other radio buttons in the same group to become unchecked when this one is checked

atk.ROLE_RADIO_MENU_ITEM

A check menu item which belongs to a group. At each instant exactly one of the radio menu items from a group is selected

atk.ROLE_ROOT_PANE

A specialized pane that has a glass pane and a layered pane as its children

atk.ROLE_ROW_HEADER

The header for a row of data

atk.ROLE_SCROLL_BAR

An object usually used to allow a user to incrementally view a large amount of data.

atk.ROLE_SCROLL_PANE

An object that allows a user to incrementally view a large amount of information

atk.ROLE_SEPARATOR

An object usually contained in a menu to provide a visible and logical separation of the contents in a menu

atk.ROLE_SLIDER

An object that allows the user to select from a bounded range

atk.ROLE_SPLIT_PANE

A specialized panel that presents two other panels at the same time

atk.ROLE_SPIN_BUTTON

An object used to get an integer or floating point number from the user

atk.ROLE_STATUSBAR

An object which reports messages of minor importance to the user

atk.ROLE_TABLE

An object used to represent information in terms of rows and columns

atk.ROLE_TABLE_CELL

A cell in a table

atk.ROLE_TABLE_COLUMN_HEADER

The header for a column of a table

atk.ROLE_TABLE_ROW_HEADER

The header for a row of a table

atk.ROLE_TEAR_OFF_MENU_ITEM

A menu item used to tear off and reattach its menu

atk.ROLE_TERMINAL

An object that represents an accessible terminal

atk.ROLE_TEXT

An object that presents text to the user

atk.ROLE_TOGGLE_BUTTON

A specialized push button that can be checked or unchecked, but does not provide a separate indicator for the current state

atk.ROLE_TOOL_BAR

A bar or palette usually composed of push buttons or toggle buttons

atk.ROLE_TOOL_TIP

An object that provides information about another object

atk.ROLE_TREE

An object used to represent hierarchical information to the user

atk.ROLE_TREE_TABLE

An object capable of expanding and collapsing rows as well as showing multiple columns of data

atk.ROLE_UNKNOWN

The object contains some Accessible information, but its role is not known

atk.ROLE_VIEWPORT

An object usually used in a scroll pane

atk.ROLE_WINDOW

A top level window with no title or border.

atk.ROLE_HEADER

An object that serves as a document header.

atk.ROLE_FOOTER

An object that serves as a document footer.

atk.ROLE_PARAGRAPH

An object which is contains a paragraph of text content.

atk.ROLE_RULER

An object which describes margins and tab stops, etc. for text objects which it controls (should have CONTROLLER_FOR relation to such).

atk.ROLE_APPLICATION

The object is an application object, which may contain atk.ROLE_FRAME objects or other types of accessibles.

atk.ROLE_AUTOCOMPLETE

The object is a dialog or list containing items for insertion into an entry widget, for instance a list of words for completion of a text entry.

atk.ROLE_EDITBAR

The object is an editable text object in a toolbar

atk.ROLE_EMBEDDED

The object is an embedded container within a document or panel. This role is a grouping "hint" indicating that the contained objects share a context.

atk.ROLE_ENTRY

The object is a component whose textual content may be entered or modified by the user, provided atk.STATE_EDITABLE is present.

atk.ROLE_CHART

The object is a graphical depiction of quantitative data. It may contain multiple subelements whose attributes and/or description may be queried to obtain both the quantitative data and information about how the data is being presented. The LABELLED_BY relation is particularly important in interpreting objects of this type, as is the accessible-description property.

atk.ROLE_CAPTION

The object contains descriptive information, usually textual, about another user interface element such as a table, chart, or image.

atk.ROLE_DOCUMENT_FRAME

The object is a visual frame or container which contains a view of document content. Document frames may occur within another Document instance, in which case the second document may be said to be embedded in the containing instance. HTML frames are often ROLE_DOCUMENT_FRAME. Either this object, or a singleton descendant, should implement the Document interface.

atk.ROLE_HEADING

The object serves as a heading for content which follows it in a document. The 'heading level' of the heading, if availabe, may be obtained by querying the object's attributes.

atk.ROLE_PAGE

The object is a containing instance which encapsulates a page of information. atk.ROLE_PAGE is used in documents and content which support a paginated navigation model.

atk.ROLE_SECTION

The object is a containing instance of document content which constitutes a particular 'logical' section of the document. The type of content within a section, and the nature of the section division itself, may be obtained by querying the object's attributes. Sections may be nested.

atk.ROLE_REDUNDANT_OBJECT

The object is redundant with another object in the hierarchy, and is exposed for purely technical reasons. Objects of this role should normally be ignored by clients.

atk.ROLE_LAST_DEFINED

not a valid role, used for finding end of the enumeration

Atk State Type Constants

The Atk State Type constants specify a particular state of a component. The actual state of an component is described by its atk.StateSet, which is a set of states.

atk.STATE_INVALID

Indicates an invalid state

atk.STATE_ACTIVE

Indicates a window is currently the active window

atk.STATE_ARMED

Indicates that the object is armed.

atk.STATE_BUSY

Indicates the current object is busy. This state may be used by implementors of Document to indicate that content loading is in process.

atk.STATE_CHECKED

Indicates this object is currently checked

atk.STATE_DEFUNCT

Indicates the user interface object corresponding to this object no longer exists

atk.STATE_EDITABLE

Indicates the user can change the contents of this object

atk.STATE_ENABLED

Indicates that this object is enabled. An inconsistent gtk.ToggleButton is an example of an object which is sensitive but not enabled.

atk.STATE_EXPANDABLE

Indicates this object allows progressive disclosure of its children

atk.STATE_EXPANDED

Indicates this object its expanded

atk.STATE_FOCUSABLE

Indicates this object can accept keyboard focus, which means all events resulting from typing on the keyboard will normally be passed to it when it has focus

atk.STATE_FOCUSED

Indicates this object currently has the keyboard focus

atk.STATE_HORIZONTAL

Indicates the orientation of this object is horizontal

atk.STATE_ICONIFIED

Indicates this object is minimized and is represented only by an icon

atk.STATE_MODAL

Indicates something must be done with this object before the user can interact with an object in a different window

atk.STATE_MULTI_LINE

Indicates this (text) object can contain multiple lines of text

atk.STATE_MULTISELECTABLE

Indicates this object allows more than one of its children to be selected at the same time

atk.STATE_OPAQUE

Indicates this object paints every pixel within its rectangular region.

atk.STATE_PRESSED

Indicates this object is currently pressed

atk.STATE_RESIZABLE

Indicates the size of this object is not fixed

atk.STATE_SELECTABLE

Indicates this object is the child of an object that allows its children to be selected and that this child is one of those children that can be selected

atk.STATE_SELECTED

Indicates this object is the child of an object that allows its children to be selected and that this child is one of those children that has been selected

atk.STATE_SENSITIVE

Indicates this object is sensitive

atk.STATE_SHOWING

Indicates this object, the object's parent, the object's parent's parent, and so on, are all visible

atk.STATE_SINGLE_LINE

Indicates this (text) object can contain only a single line of text

atk.STATE_STALE

Indicates that the index associated with this object has changed since the user accessed the object.

atk.STATE_TRANSIENT

Indicates this object is transient

atk.STATE_VERTICAL

Indicates the orientation of this object is vertical

atk.STATE_VISIBLE

Indicates this object is visible

atk.STATE_MANAGES_DESCENDANTS

Indicates that "active-descendant-changed" event is sent when children become 'active' (i.e. are selected or navigated to onscreen). Used to prevent need to enumerate all children in very large containers, like tables.

atk.STATE_INDETERMINATE

Indicates that a check box is in a state other than checked or not checked.

atk.STATE_TRUNCATED

Indicates that an object is truncated, e.g. a text value in a speradsheet cell.

atk.STATE_REQUIRED

Indicates that explicit user interaction with an object is required by the user interface, e.g. a required field in a "web-form" interface.

atk.STATE_INVALID_ENTRY

Indicates that the object has encountered an error condition due to failure of input validation. For instance, a form control may acquire this state in response to invalid or malformed user input.

atk.STATE_SUPPORTS_AUTOCOMPLETION

Indicates that the object may exhibit "typeahead" behavior in response to user keystrokes, e.g. one keystroke may result in the insertion of several characters into an entry, or result in the auto-selection of an item in a list. This state supplants atk.ROLE_AUTOCOMPLETE.

atk.STATE_SELECTABLE_TEXT

Indicates that the object in question supports text selection. It should only be exposed on objects which implement the Text interface, in order to distinguish this state from atk.STATE_SELECTABLE, which infers that the object in question is a selectable child of an object which implements Selection. While similar, text selection and subelement selection are distinct operations.

atk.STATE_LAST_DEFINED

Not a valid state, used for finding end of enumeration

Atk Text Attribute Constants

The Atk Text Attribute constants specify the built-in text attributes supported. Other text attributes may be set by an application using the atk.text_attribute_register() function.

atk.TEXT_ATTR_INVALID

nvalid attribute

atk.TEXT_ATTR_LEFT_MARGIN

The pixel width of the left margin

atk.TEXT_ATTR_RIGHT_MARGIN

The pixel width of the right margin

atk.TEXT_ATTR_INDENT

The number of pixels that the text is indented

atk.TEXT_ATTR_INVISIBLE

Either "true" or "false" indicating whether text is visible or not

atk.TEXT_ATTR_PIXELS_ABOVE_LINES

Pixels of blank space to leave above each newline-terminated line.

atk.TEXT_ATTR_PIXELS_BELOW_LINES

Pixels of blank space to leave below each newline-terminated line.

atk.TEXT_ATTR_PIXELS_INSIDE_WRAP

Pixels of blank space to leave between wrapped lines inside the same newline-terminated line (paragraph).

atk.TEXT_ATTR_BG_FULL_HEIGHT

"true" or "false" whether to make the background color for each character the height of the highest font used on the current line, or the height of the font used for the current character.

atk.TEXT_ATTR_RISE

Number of pixels that the characters are risen above the baseline

atk.TEXT_ATTR_UNDERLINE

"none", "single", "double" or "low"

atk.TEXT_ATTR_STRIKETHROUGH

"true" or "false" whether the text is strikethrough

atk.TEXT_ATTR_SIZE

The size of the characters.

atk.TEXT_ATTR_SCALE

The scale of the characters. The value is a string representation of a double

atk.TEXT_ATTR_WEIGHT

The weight of the characters.

atk.TEXT_ATTR_LANGUAGE

The language used

atk.TEXT_ATTR_FAMILY_NAME

The font family name

atk.TEXT_ATTR_BG_COLOR

The background color. The value is an RGB value of the format "u,u,u"

atk.TEXT_ATTR_FG_COLOR

The foreground color. The value is an RGB value of the format "u,u,u"

atk.TEXT_ATTR_BG_STIPPLE

"true" if a gtk.gdk.Pixmap is set for stippling the background color.

atk.TEXT_ATTR_FG_STIPPLE

"true" if a gtk.gdk.Pixmap is set for stippling the foreground color.

atk.TEXT_ATTR_WRAP_MODE

The wrap mode of the text, if any. Values are "none", "char" or "word"

atk.TEXT_ATTR_DIRECTION

The direction of the text, if set. Values are "none", "ltr" or "rtl"

atk.TEXT_ATTR_JUSTIFICATION

The justification of the text, if set. Values are "left", "right", "center" or "fill"

atk.TEXT_ATTR_STRETCH

The stretch of the text, if set. Values are "ultra_condensed", "extra_condensed", "condensed", "semi_condensed", "normal", "semi_expanded", "expanded", "extra_expanded" or "ultra_expanded"

atk.TEXT_ATTR_VARIANT

The capitalization variant of the text, if set. Values are "normal" or "small_caps"

atk.TEXT_ATTR_STYLE

The slant style of the text, if set. Values are "normal", "oblique" or "italic"

atk.TEXT_ATTR_LAST_DEFINED

not a valid text attribute, used for finding end of enumeration

Atk Text Boundary Constants

The Atk Text Boundary constants specify oundaries for regions of text.

atk.TEXT_BOUNDARY_CHAR

Boundary is the boundary between characters (including non-printing characters)

atk.TEXT_BOUNDARY_WORD_START

Boundary is the start (i.e. first character) of a word.

atk.TEXT_BOUNDARY_WORD_END

Boundary is the end (i.e. last character) of a word.

atk.TEXT_BOUNDARY_SENTENCE_START

Boundary is the first character in a sentence.

atk.TEXT_BOUNDARY_SENTENCE_END

Boundary is the last (terminal) character in a sentence; in languages which use "sentence stop" punctuation such as English, the boundary is thus the '.', '?', or similar terminal punctuation character.

atk.TEXT_BOUNDARY_LINE_START

Boundary is the initial character of the content or a character immediately following a newline, linefeed, or return character.

atk.TEXT_BOUNDARY_LINE_END

Boundary is the linefeed, or return character.

Atk Text Clip Type Constants

The Atk Text Clip Type constants specify the type of clipping required.

atk.TEXT_CLIP_NONE

No clipping to be done

atk.TEXT_CLIP_MIN

Text clipped by min coordinate is omitted

atk.TEXT_CLIP_MAX

Text clipped by max coordinate is omitted

atk.TEXT_CLIP_BOTH

Only text fully within mix/max bound is retained