Properties

fingerprint INTEGER

A custom bit mask, to be used by docking widgets to reject inappropriate dock widgets on early stage. The "fingerprint" property is not part of the protocol, and is not required to be present in a dockable widget implementation.

Default value: 0x0000FFFF

dockup DOCK_WIDGET

Selects the upper link in dock widgets hierarchy tree. The upper link is required to be a dock widget, but is not required to be a direct or an indirect parent. In this case, however, the maintenance of the link must be implemented separately, for example:

        $self-> dockup( $upper_dock_not_parent );

        $upper_dock_not_parent-> add_notification( 'Destroy', sub {
                return unless $_[0] == $self-> dockup;
                undef $self-> {dockup_event_id};
                $self-> dockup( undef );
        }, $self);

        $self-> {destroy_id} = $self-> add_notification( 'Destroy', sub {
                $self-> dockup( undef );
        } unless $self-> {destroy_id};
    

Methods

add_subdocker SUBDOCK

Appends SUBDOCK to the list of lower-level docker widgets. The items of the list are returned by "next_docker" method.

check_session SESSION

Debugging procedure; checks SESSION hash, warns if its members are invalid or incomplete. Returns 1 if no fatal errors were encountered; 0 otherwise.

close_session SESSION

Closes docking SESSION and frees the associated resources.

dock WIDGET

Called after WIDGET is successfully finished negotiation with the dock widget and changed its "owner" property. The method adapts the dock widget layout and lists WIDGET into list of docked widgets. The method does not change "owner" property of WIDGET.

The method must not be called directly.

dock_bunch @WIDGETS

Effectively docks set of WIDGETS by updating internal structures and calling "rearrange".

docklings

Returns array of docked widgets.

next_docker SESSION, [ X, Y ]

Enumerates lower-level docker widgets within SESSION; returns one docker widget at a time. After the last widget returns "undef".

The enumeration pointer is reset by "query" call.

X and Y are coordinates of the point of interest.

open_session PROFILE

Opens docking session with parameters stored in PROFILE and returns session ID scalar in case of success, or "undef" otherwise. The following keys must be set in PROFILE:

query SESSION [ X1, Y1, X2, Y2 ]

Checks if a dockable widget can be landed into the dock. If it can, returns a rectangle that the widget must be set to. If coordinates ( X1 .. Y2 ) are specified, returns the rectangle closest to these. If "sizes" or "sizeable" keys of "open_session" profile were set, the returned size might be different from the current docking widget size.

Once the caller finds the result appropriate, it is allowed to change its owner to the dock; after that, it must change its origin and size correspondingly to the result, and then call "dock".

If the dock cannot accept the widget, but contains lower-lever dock widgets, returns the first lower-lever widget. The caller can use subsequent calls to "next_docker" to enumerate all lower-level dock widgets. A call to "query" resets the internal enumeration pointer.

If the widget cannot be landed, an empty array is returned.

rearrange

Effectively re-docks all the docked widgets. The effect is as same as of

        $self-> redock_widget($_) for $self-> docklings;
    

but usually "rearrange" is faster.

redock_widget WIDGET

Effectively re-docks the docked WIDGET. If WIDGET has "redock" method in its namespace, it is called instead.

remove_subdocker SUBDOCK

Removes SUBDOCK from the list of lower-level docker widgets. See also add_subdocker.

replace FROM, TO

Assigns widget TO same owner and rectangle as FROM. The FROM widget must be a docked widget.

undock WIDGET

Removes WIDGET from list of docked widgets. The layout of the dock widget can be changed after execution of this method. The method does not change "owner" property of WIDGET.

The method must not be called directly.

Properties

growable INTEGER

A combination of "grow::XXX" constants, that describes how the dock widget can be resized. The constants are divided in two sets, direct and indirect, or, "vertical" property independent and dependent.

The first set contains explicitly named constants:

        grow::Left       grow::ForwardLeft       grow::BackLeft
        grow::Down       grow::ForwardDown       grow::BackDown
        grow::Right      grow::ForwardRight      grow::BackRight
        grow::Up         grow::ForwardUp         grow::BackUp
    

that select if the widget can be grown to the direction shown. These do not change meaning when "vertical" changes, though they do change the dock widget behavior. The second set does not affect dock widget behavior when "vertical" changes, however the names are not that illustrative:

        grow::MajorLess  grow::ForwardMajorLess  grow::BackMajorLess
        grow::MajorMore  grow::ForwardMajorMore  grow::BackMajorMore
        grow::MinorLess  grow::ForwardMinorLess  grow::BackMinorLess
        grow::MinorMore  grow::ForwardMinorMore  grow::BackMinorMore
    

"Forward" and "Back" prefixes select if the dock widget can be respectively expanded or shrunk in the given direction. "Less" and "More" are equivalent to "Left" and "Right" when "vertical" is 0, and to "Up" and "Down" otherwise.

The use of constants from the second set is preferred.

Default value: 0

hasPocket BOOLEAN

A boolean flag, affects the possibility of a docked widget to reside outside the dock widget inferior. If 1, a docked wigdet is allowed to stay docked ( or dock into a position ) further on the major axis ( to the right when "vertical" is 0, up otherwise ), as if there's a 'pocket'. If 0, a widget is neither allowed to dock outside the inferior, nor is allowed to stay docked ( and is undocked automatically ) when the dock widget shrinks so that the docked widget cannot stay in the dock boundaries.

Default value: 1

vertical BOOLEAN

Selects the major axis of the dock widget. If 1, it is vertical, horizontal otherwise.

Default value: 0

Events

Dock

Called when "dock" is successfully finished.

DockError WIDGET

Called when "dock" is unsuccessfully finished. This only happens if WIDGET does not follow the docking protocol, and inserts itself into a non-approved area.

Undock

Called when "undock" is finished.

Properties

indents ARRAY

Contains four integers, specifying the breadth of offset for each side. The first integer is width of the left side, the second - height of the bottom side, the third - width of the right side, the fourth - height of the top side.

dockerClassLeft STRING

Assigns class of left-side dock window.

Default value: "Prima::LinearWidgetDocker". Create-only property.

dockerClassRight STRING

Assigns class of right-side dock window.

Default value: "Prima::LinearWidgetDocker". Create-only property.

dockerClassTop STRING

Assigns class of top-side dock window.

Default value: "Prima::LinearWidgetDocker". Create-only property.

dockerClassBottom STRING

Assigns class of bottom-side dock window.

Default value: "Prima::LinearWidgetDocker". Create-only property.

dockerClassClient STRING

Assigns class of center dock window.

Default value: "Prima::ClientWidgetDocker". Create-only property.

dockerProfileLeft HASH

Assigns hash of properties, passed to the left-side dock widget during the creation.

Create-only property.

dockerProfileRight HASH

Assigns hash of properties, passed to the right-side dock widget during the creation.

Create-only property.

dockerProfileTop HASH

Assigns hash of properties, passed to the top-side dock widget during the creation.

Create-only property.

dockerProfileBottom HASH

Assigns hash of properties, passed to the bottom-side dock widget during the creation.

Create-only property.

dockerProfileClient HASH

Assigns hash of properties, passed to the center dock widget during the creation.

Create-only property.

dockerDelegationsLeft ARRAY

Assigns the left-side dock list of delegated notifications.

Create-only property.

dockerDelegationsRight ARRAY

Assigns the right-side dock list of delegated notifications.

Create-only property.

dockerDelegationsTop ARRAY

Assigns the top-side dock list of delegated notifications.

Create-only property.

dockerDelegationsBottom ARRAY

Assigns the bottom-side dock list of delegated notifications.

Create-only property.

dockerDelegationsClient ARRAY

Assigns the center dock list of delegated notifications.

Create-only property.

dockerCommonProfile HASH

Assigns hash of properties, passed to all five dock widgets during the creation.

Create-only property.

Properties

client WIDGET

Provides access to the client widget, which always resides either in the internal or the external shuttle. By default there is no client, and any widget capable of changing its parent can be set as one. After a widget is assigned as a client, its "owner" and "clipOwner" properties must not be used.

Run-time only property.

dock WIDGET

Selects the dock widget that the shuttle is landed on. If "undef", the shuttle is in the non-docked state.

Default value: "undef"

dockingRoot WIDGET

Selects the root of dock widgets hierarchy. If "undef", the shuttle can only exist in the non-docked state.

Default value: "undef"

See "USAGE" for reference.

externalDockerClass STRING

Assigns class of external shuttle widget.

Default value: "Prima::ExternalDockerShuttle"

externalDockerModule STRING

Assigns module that contains the external shuttle widget class.

Default value: "Prima::MDI" ( "Prima::ExternalDockerShuttle" is derived from "Prima::MDI" ).

externalDockerProfile HASH

Assigns hash of properties, passed to the external shuttle widget during the creation.

fingerprint INTEGER

A custom bit mask, used to reject inappropriate dock widgets on early stage.

Default value: 0x0000FFFF

indents ARRAY

Contains four integers, specifying the breadth of offset in pixels for each widget side in the docked state.

Default value: "5,5,5,5".

snapDistance INTEGER

A maximum offset, in pixels, between the actual shuttle coordinates and the coordinates proposed by the dock widget, where the shuttle is allowed to land. In other words, it is the distance between the dock and the shuttle when the latter 'snaps' to the dock during the dragging session.

Default value: 10

x_sizeable BOOLEAN

Selects whether the shuttle can change its width in case the dock widget suggests so.

Default value: 0

y_sizeable BOOLEAN

Selects whether the shuttle can change its height in case the dock widget suggests so.

Default value: 0

Methods

client2frame X1, Y1, X2, Y2

Returns a rectangle that the shuttle would occupy if its client rectangle is assigned to X1, Y1, X2, Y2 rectangle.

dock_back

Docks to the recent dock widget, if it is still available.

drag STATE, RECT, ANCHOR_X, ANCHOR_Y

Initiates or aborts the dragging session, depending on STATE boolean flag.

If it is 1, RECT is an array with the coordinates of the shuttle rectangle before the drag has started; ANCHOR_X and ANCHOR_Y are coordinates of the aperture point where the mouse event occurred that has initiated the drag. Depending on how the drag session ended, the shuttle can be relocated to another dock, undocked, or left intact. Also, "Dock", "Undock", or "FailDock" notifications can be triggered.

If STATE is 0, RECT, ANCHOR_X ,and ANCHOR_Y parameters are not used.

find_docking DOCK, [ POSITION ]

Opens a session with DOCK, unless it is already opened, and negotiates about the possibility of landing ( at particular POSITION, if this parameter is present ).

"find_docking" caches the dock widget sessions, and provides a possibility to select different parameters passed to "open_session" for different dock widgets. To achieve this, "GetCaps" request notification is triggered, which fills the parameters. The default action sets "sizeable" options according to "x_sizeable" and "y_sizeable" properties.

In case an appropriate landing area is found, "Landing" notification is triggered with the proposed dock widget and the target rectangle. The area can be rejected on this stage if "Landing" returns negative answer.

On success, returns a dock widget found and the target rectangle; the widget is never docked though. On failure returns an empty array.

This method is used by the dragging routine to provide a visual feedback to the user, to indicate that a shuttle may or may not land in a particular area.

frame2client X1, Y1, X2, Y2

Returns a rectangle that the client would occupy if the shuttle rectangle is assigned to X1, Y1, X2, Y2 rectangle.

redock

If docked, undocks form the dock widget and docks back. If not docked, does not perform anything.

Events

Dock

Called when shuttle is docked.

EDSClose

Triggered when the user presses close button or otherwise activates the "close" function of the EDS ( external docker shuttle ). To cancel the closing, "clear_event" must be called inside the event handler.

FailDock X, Y

Called after the dragging session in the non-docked stage is finished, but did not result in docking. X and Y are the coordinates of the new external shuttle position.

GetCaps DOCK, PROFILE

Called before the shuttle opens a docking session with DOCK widget. PROFILE is a hash reference, which is to be filled inside the event handler. After that PROFILE is passed to "open_session" call.

The default action sets "sizeable" options according to "x_sizeable" and "y_sizeable" properties.

Landing DOCK, X1, Y1, X2, Y2

Called inside the docking session, after an appropriate dock widget is selected and the landing area is defined as X1, Y1, X2, Y2. To reject the landing on either DOCK or area, "clear_event" must be called.

Undock

Called when shuttle is switched to the non-docked state.

Properties

shuttle WIDGET

Contains reference to the dockable WIDGET

Properties

headerBreadth INTEGER

Breadth of the header in pixels.

Default value: 8

indent INTEGER

Provides a wrapper to "indents" property; besides the space for the header, all indents are assigned to "indent" property value.

vertical BOOLEAN

If 1, the shuttle is drawn as a vertical bar. If 0, the shuttle is drawn as a horizontal bar.

Default value: 0