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AZAWAWI DRTECH MISHIN PAWAPAWA TOBYINK

5 PAUSE user(s)
3 non-PAUSE user(s).

Dmitry Karasik

NAME

Prima::DockManager - advanced dockable widgets

DESCRIPTION

Prima::DockManager contains classes that implement additional functionality within the dockable widgets paradigm.

The module introduces two new dockable widget classes: Prima::DockManager::Panelbar, a general purpose dockable container for variable-sized widgets; and Prima::DockManager::Toolbar, a dockable container for fixed-size command widgets, mostly push buttons. The command widgets, nested in a toolbar, can also be docked.

Prima::DockManager class is an application-oriented class in a way that ( mostly ) the only instance of it is needed in the program. It is derived from Prima::Component and therefore is never visualized. The class instance is stored in instance property of all module classes to serve as a docking hierarchy root. Through the document, instance term is referred to Prima::DockManager class instance.

The module by itself is not enough to make a docking-aware application work effectively. The reader is urged to look at examples/dock.pl example code, which demonstrates the usage and capabilities of the module.

Prima::DockManager::Toolbar

A toolbar widget class. The toolbar has a dual nature; it can dock and accept docking widgets simultaneously. In the scope of Prima::DockManager, the toolbar hosts command widget, mostly push buttons.

The toolbar consists of two widgets. The external dockable widget is implemented in Prima::DockManager::Toolbar, and the internal dock in Prima::DockManager::ToolbarDocker classes.

Properties

autoClose BOOLEAN

Selects the behavior of a toolbar when all of its command widgets are undocked. If 1, the toolbar is automatically destroyed. If 0 it calls visible(0).

childDocker WIDGET

Pointer to Prima::DockManager::ToolbarDocker instance.

See also Prima::DockManager::ToolbarDocker::parentDocker.

instance INSTANCE

Prima::DockManager instance, the docking hierarchy root.

Prima::DockManager::ToolbarDocker

Internal class, implements a dock widget for command widgets, while serves as a client in a dockable toolbar, which is a Prima::LinearDockerShuttle descendant. When its size is changed due an eventual rearrange of its docked widgets, also resizes the toolbar.

Properties

instance INSTANCE

Prima::DockManager instance, the docking hierarchy root.

parentDocker WIDGET

Pointer to Prima::DockManager::Toolbar instance. When in the docked state, parentDocker value is always equals to owner.

See also Prima::DockManager::Toolbar::childDocker.

Methods

get_extent

Calculates the minimal rectangle that encloses all docked widgets and returns its extensions.

update_size

Called when size is changed to resizes the owner widget. If it is in the docked state, the size change might result in change of position or docking state.

Prima::DockManager::Panelbar

The class is derived from Prima::LinearDockerShuttle, and is different only in that instance property is introduced, and the external shuttle can be resized interactively.

The class is to be used as a simple host to sizeable widgets. The user can dispose of the panel bar by clicking close button on the external shuttle.

Properties

instance INSTANCE

Prima::DockManager instance, the docking hierarchy root.

Prima::DockManager

A binder class, contains set of functions that groups toolbars, panels, and command widgets together under the docking hierarchy.

The manager servers several purposes. First, it is a command state holder: the command widgets, mostly buttons, usually are in enabled or disabled state in different life stages of a program. The manager maintains the enabled/disabled state by assigning each command an unique scalar value ( farther and in the code referred as CLSID ). The toolbars can be created with set of command widgets, referred via these CLSIDs. The same is valid for the panels - although they do not host command widgets, the widgets that they do host can also be created indirectly via CLSID identifier. In addition to CLSID, the commands can be grouped by sections. Both CLSID and group descriptor scalars are defined by the programmer.

Second, create_manager method presents a standard configuration widget, that allows rearranging of normally non-dockable command widgets, by presenting a full set of available commands to the user as icons. Dragging the icons to toolbars, dock widgets or merely outside the configuration widget automatically creates the corresponding command widget. The notable moment here is that the command widgets are not required to know anything about dragging and docking; any Prima::Widget descendant can be used as a command widget.

Third, it helps maintaining the toolbars and panels visibility when the main window is hidden or restored. windowState method hides or shows the toolbars and panels effectively.

Fourth, it serves as a docking hierarchy root. All docking sessions begin from Prima::DockManager object, which although does not provide docking capabilities itself ( it is Prima::Component descendant ), redirects the docking requests to the lower-level dock widgets.

Fifth, it provides number of helper methods and notifications, and enforces use or fingerprint property by all dockable widgets. This property has default value of 0xFFFF ( defined in Prima::Docks ). The module contains the fingerprint dmfp::XXX constants with value greater than this, so the toolbars and panels are not docked to a dock widget with the default configuration. The base constant set is:

        fdmp::Tools      ( 0x0F000) - dock the command widgets
        fdmp::Toolbar    ( 0x10000) - dock the toolbars
        fdmp::LaunchPad  ( 0x20000) - allows widgets recycling

All this functionality is demonstrated in examples/dock.pl example.

Properties

commands HASH

A hash of boolean values, with keys of CLSID scalars. If value is 1, the command is available. If 0, the command is disabled. Changes to this property are reflected in the visible command widgets, which are enabled or disabled immediately. Also, CommandChange notification is triggered.

fingerprint INTEGER

The property is read-only, and always returns 0xFFFFFFFF, to allow landing for all dockable widgets. In case when a finer granulation is needed, the default fingerprint values of toolbars and panels can be reset.

interactiveDrag BOOLEAN

If 1, the command widgets can be interactively dragged, created and destroyed. This property is usually operated together with create_manager widget. If 0, the command widgets cannot be dragged.

Default value: 0

Methods

activate

Brings to front all toolbars and panels. To be used inside a callback code of a main window, that has the toolbars and panels attached to:

        onActivate => sub { $dock_manager-> activate } 
auto_toolbar_name

Returns an unique name for an automatically created toolbar, like Toolbar1, Toolbar2 etc.

commands_enable BOOLEAN, @CLSIDs

Enabled or disables commands from CLSIDs array. The changes are reflected in the visible command widgets, which are enabled or disabled immediately. Also, CommandChange notification is triggered.

create_manager OWNER, %PROFILE

Inserts two widgets into OWNER with PROFILE parameters: a listbox with command section groups, displayed as items, that usually correspond to the predefined toolbar names, and a notebook that displays the command icons. The notebook pages are interactively selected by the listbox navigation.

The icons, dragged from the notebook, behave as dockable widgets: they can be landed upon a toolbar, or any other dock widget, given it matches the fingerprint ( by default dmfp::LaunchPad|dmfp::Toolbar|dmfp::Tools). dmfp::LaunchPad constant allows the recycling; if a widget is dragged back onto the notebook, it is destroyed.

Returns two widgets, the listbox and the notebook.

PROFILE recognizes the following keys:

origin X, Y

Position where the widgets are to be inserted. Default value is 0,0.

size X, Y

Size of the widget insertion area. By default the widgets occupy all OWNER interior.

listboxProfile PROFILE

Custom parameters, passed to the listbox.

dockerProfile PROFILE

Custom parameteres, passed to the notebook.

create_panel CLSID, %PROFILE

Creates a dockable panel of a previously registered CLSID by register_panel. PROFILE recognizes the following keys:

profile HASH

Hash of parameters, passed to create() of the panel widget class. Before passing it is merged with the set of parameters, registered by register_panel. The profile hash takes the precedence.

dockerProfile HASH

Constains extra options, passed to Prima::DockManager::Panelbar widget. Before the usage it is merged with the set of parameters, registered by register_panel.

NB: The dock key here contains a reference to a desired dock widget. If dock set to undef, the panel is created in the non-docked state.

Example:

        $dock_manager-> create_panel( $CLSID, 
                dockerProfile => { dock => $main_window }},
                profile       => { backColor => cl::Green });
create_tool OWNER, CLSID, X1, Y1, X2, Y2

Inserts a command widget, previously registered with CLSID by register_tool, into OWNER widget with X1 - Y2 coordinates. For automatic maintenance of enable/disable state of command widgets OWNER is expected to be a toolbar. If it is not, the maintenance must be performed separately, for example, by CommandChange event.

create_toolbar %PROFILE

Creates a new toolbar of Prima::DockManager::Toolbar class. The following PROFILE options are recognized:

autoClose BOOLEAN

Sets autoClose property of the toolbar.

Default value is 1 if name options is set, 0 otherwise.

dock DOCK

Contain a reference to a desired DOCK widget. If undef, the toolbar is created in the non-docked state.

dockerProfile HASH

Parameters passed to Prima::DockManager::Toolbar as creation properties.

NB: The dock key here contains a reference to a desired dock widget. If dock set to undef, the panel is created in the non-docked state.

rect X1, Y1, X2, Y2

Selects rectangle of the Prima::DockManager::ToolbarDocker instance in the dock widget ( if docked ) or the screen ( if non-docked ) coordinates.

toolbarProfile HASH

Parameters passed to Prima::DockManager::ToolbarDocker as creation properties.

vertical BOOLEAN

Sets vertical property of the toolbar.

visible BOOLEAN

Selects visibility state of the toolbar.

get_class CLSID

Returns class record hash, registered under CLSID, or undef if the class is not registered. The hash format contains the following keys:

class STRING

Widget class

profile HASH

Creation parameters passed to create when the widget is created.

tool BOOLEAN

If 1, the class belongs to a control widget. If 0, the class represents a panel client widget.

lastUsedDock DOCK

Saved value of the last used dock widget

lastUsedRect X1, Y1, X2, Y2

Saved coordinates of the widget

panel_by_id CLSID

Return reference to a panel widget represented by CLSID scalar, or undef if none found.

panel_menuitems CALLBACK

A helper function; maps all panel names into a structure, ready to feed into Prima::AbstractMenu::items property ( see Prima::Menu ). The action member of the menu item record is set to CALLBACK scalar.

panel_visible CLSID, BOOLEAN

Sets the visibility of a panel, referred by CLSID scalar. If VISIBLE is 0, a panel is destroyed; if 1, new panel instance is created.

panels

Returns all visible panel widgets in an array.

predefined_panels CLSID, DOCK, [ CLSID, DOCK, ... ]

Accepts pairs of scalars, where each first item is a panel CLSID and second is the default dock widget. Checks for panel visibility, and creates the panels that are not visible.

The method is useful in program startup, when some panels have to be visible from the beginning.

predefined_toolbars @PROFILES

Accepts array of hashes, where each array item describes a toolbar and a default set of command widgets. Checks for toolbar visibility, and creates the toolbars that are not visible.

The method recognizes the following PROFILES options:

dock DOCK

The default dock widget.

list ARRAY

Array of CLSIDs corresponding to the command widgets to be inserted into the toolbar.

name STRING

Selects toolbar name.

origin X, Y

Selects the toolbar position relative to the dock ( if dock is specified ) or to the screen ( if dock is not specified ).

The method is useful in program startup, when some panels have to be visible from the beginning.

register_panel CLSID, PROFILE

Registers a panel client class and set of parameters to be associated with CLSID scalar. PROFILE must contain the following keys:

class STRING

Client widget class

text STRING

String, displayed in the panel title bar

dockerProfile HASH

Hash of parameters, passed to Prima::DockManager::Panelbar.

profile

Hash of parameters, passed to the client widget.

register_tool CLSID, PROFILE

Registers a control widget class and set of parameters to be associated with CLSID scalar. PROFILE must be set the following keys:

class STRING

Client widget class

profile HASH

Hash of parameters, passed to the control widget.

toolbar_by_name NAME

Returns a pointer to a toolbar of NAME, or undef if none found.

toolbar_menuitems CALLBACK

A helper function; maps all toolbar names into a structure, ready to feed into Prima::AbstractMenu::items property ( see Prima::Menu ). The action member of the menu item record is set to CALLBACK scalar.

toolbar_visible TOOLBAR, BOOLEAN

Sets the visibility of a TOOLBAR. If VISIBLE is 0, the toolbar is hidden; if 1, it is shown.

toolbars

Returns all toolbar widgets in an array.

windowState INTEGER

Mimics interface of Prima::Window::windowState, and maintains visibility of toolbars and panels. If the parameter is ws::Minimized, the toolbars and panels are hidden. On any other parameter these are shown.

To be used inside a callback code of a main window, that has the toolbars and panels attached to:

        onWindowState => sub { $dock_manager-> windowState( $_[1] ) }

Events

Command CLSID

A generic event, triggered by a command widget when the user activates it. It can also be called by other means.

CLSID is the widget identifier.

CommandChange

Called when commands property changes or commands_enable method is invoked.

PanelChange

Triggered when a panel is created or destroyed by the user.

ToolbarChange

Triggered when a toolbar is created, shown, hidden, or destroyed by the user.

Prima::DockManager::S::SpeedButton

The package simplifies creation of Prima::SpeedButton command widgets.

Methods

class IMAGE, CLSID, %PROFILE

Builds a hash with parameters, ready to feed Prima::DockManager::register_tool for registering a Prima::SpeedButton class instance with PROFILE parameters.

IMAGE is a path to a image file, loaded and stored in the registration hash. IMAGE provides an extended syntax for indicating a frame index, if the image file is multiframed: the frame index is appended to the path name with : character prefix.

CLSID scalar is not used; it is returned so the method result can directly be passed into register_tool method.

Returns two scalars: CLSID and the registration hash.

Example:

        $dock_manager-> register_tool( 
                Prima::DockManager::S::SpeedButton::class( "myicon.gif:2", 
                q(CLSID::Logo), hint => 'Logo image' ));

AUTHOR

Dmitry Karasik, <dmitry@karasik.eu.org>.

SEE ALSO

Prima, Prima::Widget, Prima::Docks, examples/dock.pl




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