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