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Prima::Notebooks(3) |
User Contributed Perl Documentation |
Prima::Notebooks(3) |
Prima::Notebooks - multipage widgets
The module contains several widgets useful for organizing multipage ( notebook )
containers. "Prima::Notebook" provides basic
functionality of a widget container.
"Prima::TabSet" is a page selector control,
and "Prima::TabbedNotebook" combines these
two into a ready-to-use multipage control with interactive navigation.
use Prima qw(Notebooks Buttons Application);
my $nb = Prima::TabbedNotebook-> new(
tabs => [ 'First page', 'Second page', 'Second page' ],
size => [ 300, 200 ],
);
$nb-> insert_to_page( 1, 'Prima::Button' );
$nb-> insert_to_page( 2,
[ 'Prima::Button', bottom => 10 ],
[ 'Prima::Button', bottom => 150 ],
);
$nb-> Notebook-> backColor( cl::Green );
run Prima;
Provides basic widget container functionality. Acts as merely a grouping widget,
hiding and showing the children widgets when
"pageIndex" property is changed.
- defaultInsertPage INTEGER
- Selects the page where widgets, attached by
"insert" call are assigned to. If set to
"undef", the default page is the current
page.
Default value: "undef".
- pageCount INTEGER
- Selects number of pages. If the number of pages is reduced, the widgets
that belong to the rejected pages are removed from the notebook's
storage.
- pageIndex INTEGER
- Selects the index of the current page. Valid values are from 0 to
"pageCount - 1".
- attach_to_page INDEX, @WIDGETS
- Attaches list of WIDGETS to INDEXth page. The widgets are not necessarily
must be children of the notebook widget. If the page is not current, the
widgets get hidden and disabled; otherwise their state is not
changed.
- contains_widget WIDGET
- Searches for WIDGET in the attached widgets list. If found, returns two
integers: location page index and widget list index. Otherwise returns an
empty list.
- delete_page [ INDEX = -1, REMOVE_CHILDREN = 1 ]
- Deletes INDEXth page, and detaches the widgets associated with it. If
REMOVE_CHILDREN is 1, the detached widgets are destroyed.
- delete_widget WIDGET
- Detaches WIDGET from the widget list and destroys the widget.
- detach_from_page WIDGET
- Detaches WIDGET from the widget list.
- insert CLASS, %PROFILE [[ CLASS, %PROFILE], ... ]
- Creates one or more widgets with "owner"
property set to the caller widget, and returns the list of references to
the newly created widgets.
See "insert" in Prima::Widget for details.
- insert_page [ INDEX = -1 ]
- Inserts a new empty page at INDEX. Valid range is from 0 to
"pageCount"; setting INDEX equal to
"pageCount" is equivalent to appending a
page to the end of the page list.
- insert_to_page INDEX, CLASS, %PROFILE, [[ CLASS, %PROFILE], ... ]
- Inserts one ore more widgets to INDEXth page. The semantics of setting
CLASS and PROFILE, as well as the return values are fully equivalent to
"insert" method.
See "insert" in Prima::Widget for details.
- insert_transparent CLASS, %PROFILE, [[ CLASS, %PROFILE], ... ]
- Inserts one or more widgets to the notebook widget, but does not add
widgets to the widget list, so the widgets are not flipped together with
pages. Useful for setting omnipresent ( or transparent ) widgets, visible
on all pages.
The semantics of setting CLASS and PROFILE, as well as the
return values are fully equivalent to
"insert" method.
See "insert" in Prima::Widget for details.
- move_widget WIDGET, INDEX
- Moves WIDGET from its old page to INDEXth page.
- widget_get WIDGET, PROPERTY
- Returns PROPERTY value of WIDGET. If PROPERTY is affected by the page
flipping mechanism, the internal flag value is returned instead.
- widget_set WIDGET, %PROFILE
- Calls "set" on WIDGET with PROFILE and
updates the internal "visible",
"enabled",
"current", and
"geometry" properties if these are
present in PROFILE.
See "set" in Prima::Object.
- widgets_from_page INDEX
- Returns list of widgets, associated with INDEXth page.
- Change OLD_PAGE_INDEX, NEW_PAGE_INDEX
- Called when "pageIndex" value is changed
from OLD_PAGE_INDEX to NEW_PAGE_INDEX. Current implementation invokes this
notification while the notebook widget is in locked state, so no redraw
requests are honored during the notification execution.
Since the notebook operates directly on children widgets'
"::visible" and
"::enable" properties, there is a problem
when a widget associated with a non-active page must be explicitly hidden or
disabled. As a result, such a widget would become visible and enabled anyway.
This happens because Prima API does not cache property requests. For example,
after execution of the following code
$notebook-> pageIndex(1);
my $widget = $notebook-> insert_to_page( 0, ... );
$widget-> visible(0);
$notebook-> pageIndex(0);
$widget will still be visible. As a
workaround, "widget_set" method can be
suggested, to be called together with the explicit state calls. Changing
$widget-> visible(0);
code to
$notebook-> widget_set( $widget, visible => 0);
solves the problem, but introduces an inconsistency in API.
"Prima::TabSet" class implements functionality
of an interactive page switcher. A widget is presented as a set of horizontal
bookmark-styled tabs with text identifiers.
- colored BOOLEAN
- A boolean property, selects whether each tab uses unique color ( OS/2 Warp
4 style ), or all tabs are drawn with
"backColor".
Default value: 1
- firstTab INTEGER
- Selects the first ( leftmost ) visible tab.
- focusedTab INTEGER
- Selects the currently focused tab. This property value is almost always
equals to "tabIndex", except when the
widget is navigated by arrow keys, and tab selection does not occur until
the user presses the return key.
- topMost BOOLEAN
- Selects the way the widget is oriented. If 1, the widget is drawn as if it
resides on top of another widget. If 0, it is drawn as if it is at bottom.
Default value: 1
- tabIndex INDEX
- Selects the INDEXth tab. When changed,
"Change" notification is triggered.
- tabs ARRAY
- Anonymous array of text scalars. Each scalar corresponds to a tab and is
displayed correspondingly. The class supports single-line text strings
only; newline characters are not respected.
- get_item_width INDEX
- Returns width in pixels of INDEXth tab.
- tab2firstTab INDEX
- Returns the index of a tab, that will be drawn leftmost if INDEXth tab is
to be displayed.
- insert_tab TEXT, [ POSITION = -1 ]
- Inserts a new tab text at the given position, which is at the end by
default
- delete_tab POSITION
- Removes a tab from the given position
- Change
- Triggered when "tabIndex" property is
changed.
- DrawTab CANVAS, INDEX, COLOR_SET, POLYGON1, POLYGON2
- Called when INDEXth tab is to be drawn on CANVAS. COLOR_SET is an array
reference, and consists of the four cached color values: foreground,
background, dark 3d color, and light 3d color. POLYGON1 and POLYGON2 are
array references, and contain four points as integer pairs in
(X,Y)-coordinates. POLYGON1 keeps coordinates of the larger polygon of a
tab, while POLYGON2 of the smaller. Text is displayed inside the larger
polygon:
POLYGON1
[2,3] [4,5]
o..........o
. .
[0,1]. TAB_TEXT . [6,7]
o................o
POLYGON2
[0,1] [2,3]
o................o
[6,7]o..............o[4,5]
Depending on "topMost"
property value, POLYGON1 and POLYGON2 change their mutual vertical
orientation.
The notification is always called from within
"begin_paint/end_paint" block.
- MeasureTab INDEX, REF
- Puts width of INDEXth tab in pixels into REF scalar value. This
notification must be called from within
"begin_paint_info/end_paint_info"
block.
The class combines functionality of
"Prima::TabSet" and
"Prima::Notebook", providing the interactive
multipage widget functionality. The page indexing scheme is two-leveled: the
first level is equivalent to the
"Prima::TabSet" - provided tab scheme. Each
first-level tab, in turn, contains one or more second-level pages, which can
be switched using native
"Prima::TabbedNotebook" controls.
First-level tab is often referred as tab, and second-level
as page.
- defaultInsertPage INTEGER
- Selects the page where widgets, attached by
"insert" call are assigned to. If set to
"undef", the default page is the current
page.
Default value: "undef".
- notebookClass STRING
- Assigns the notebook widget class.
Create-only property.
Default value:
"Prima::Notebook"
- notebookProfile HASH
- Assigns hash of properties, passed to the notebook widget during the
creation.
Create-only property.
- notebookDelegations ARRAY
- Assigns list of delegated notifications to the notebook widget.
Create-only property.
- orientation INTEGER
- Selects one of the following tno::XXX constants
- tno::Top
- The TabSet will be drawn at the top of the widget.
- tno::Bottom
- The TabSet will be drawn at the bottom of the widget.
- pageIndex INTEGER
- Selects the INDEXth page or a tabset widget ( the second-level tab ). When
this property is triggered, "tabIndex"
can change its value, and "Change"
notification is triggered.
- style INTEGER
- Selects one of the following tns::XXX constants
- tns::Standard
- The widget will have a raised border surrounding it and a +/- control at
the top for moving between pages.
- tns::Simple
- The widget will have no decorations (other than a standard border). It is
recommended to have only one second-level page per tab with this
style.
Default value: tns::Standard
- tabIndex INTEGER
- Selects the INDEXth tab on a tabset widget using the first-level tab
numeration.
- tabs ARRAY
- Governs number and names of notebook pages. ARRAY is an anonymous array of
text scalars, where each corresponds to a single first-level tab and a
single notebook page, with the following exception. To define second-level
tabs, the same text string must be repeated as many times as many
second-level tabs are desired. For example, the code
$nb-> tabs('1st', ('2nd') x 3);
results in creation of a notebook of four pages and two
first-level tabs. The tab '2nd' contains three
second-level pages.
The property implicitly operates the underlying notebook's
"pageCount" property. When changed at
run-time, its effect on the children widgets is therefore the same. See
pageCount for more information.
- tabsetClass STRING
- Assigns the tab set widget class.
Create-only property.
Default value:
"Prima::TabSet"
- tabsetProfile HASH
- Assigns hash of properties, passed to the tab set widget during the
creation.
Create-only property.
- tabsetDelegations ARRAY
- Assigns list of delegated notifications to the tab set widget.
Create-only property.
The class forwards the following methods of
"Prima::Notebook", which are described in
Prima::Notebook: "attach_to_page",
"insert_to_page",
"insert",
"insert_transparent",
"delete_widget",
"detach_from_page",
"move_widget",
"contains_widget",
"widget_get",
"widget_set",
"widgets_from_page".
- tab2page INDEX
- Returns second-level tab index, that corresponds to the INDEXth
first-level tab.
- page2tab INDEX
- Returns first-level tab index, that corresponds to the INDEXth
second-level tab.
- insert_page TEXT, [ POSITION = -1 ]
- Inserts a new page with text at the given position, which is at the end by
default. If TEXT is same as the existing tab left or right from POSITION,
the page is joined the existing tab; otherwise a new tab is created.
- delete_page POSITION
- Removes a page from the given position.
- Change OLD_PAGE_INDEX, NEW_PAGE_INDEX
- Triggered when "pageIndex" property is
changes it s value from OLD_PAGE_INDEX to NEW_PAGE_INDEX.
Dmitry Karasik, <dmitry@karasik.eu.org>. Teo Sankaro,
<teo_sankaro@hotmail.com>.
Prima, Prima::Widget, examples/notebook.pl.
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