Prima::Header - a multi-tabbed header widget. The widget class provides functionality of several button-like caption tabs, that can be moved and resized by the user. The class was implemented with a view to serve as a table header for list and grid widgets.

Events
Called when the user clicks on the tab, positioned at INDEX. A callback used to draw the tabs. CANVAS is the output object; INDEX is the index of a tab. X1,Y2,X2,Y2 are the coordinates of the boundaries of the tab rectangle; TEXT_BASELINE is a pre-calculated vertical position for eventual centered text output. Stores in scalar, referenced by RESULT, the width or height ( depending on the vertical manpage property value ) of the tab in pixels. Called when the user moves a tab from its old location, specified by OLD_INDEX, to the NEW_INDEX position. By the time of call, all internal structures are updated. Called when the user resizes a tab in INDEX position. OLD_EXTENT and NEW_EXTENT are either width or height of the tab, depending on the vertical manpage property value. Called when more than one tab has changed its extent. This might happen as a result of user action, as well as an effect of set-calling to some properties.

Properties
Selects if the user is allowed to click the tabs. Default value: 1 Selects if the user is allowed to move of the tabs. Default value: 1 Array of scalars, representing the internal data of the tabs. By default the scalars are treated as text strings. A minimal extent in pixels a tab must occupy. Default value: 2 An offset on the major axis ( depends on the vertical manpage property value ) that the widget is drawn with. Used for the conjunction with list widgets ( see the Prima::DetailedList manpage ), when the list is horizontally or vertically scrolled. Default value: 0 Contains the index of the currently pressed tab. A -1 value is selected when no tabs are pressed. Default value: -1 Selects if the user is allowed to resize the tabs. Default value: 1 If 1, the tabs are aligned vertically; the the offset manpage, the widths manpage property and extent parameters of the callback notification assume heights of the tabs. If 0, the tabs are aligned horizontally, and the extent properties and parameters assume tab widths. Array of integer values, corresponding to the extents of the tabs. The extents are widths ( vertical is 0 ) or heights ( vertical is 1 ).

Methods
Returns offset of the INDEXth tab ( without regard to the offset manpage property value ). Returns four integers, representing the rectangle area, occupied by the INDEXth tab ( without regard to the offset manpage property value ). Dmitry Karasik, <dmitry@karasik.eu.org>. the Prima manpage, the Prima::Widget manpage, the Prima::DetailedList manpage, examples/sheet.pl.