1Prima::Header(3) User Contributed Perl Documentation Prima::Header(3)
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6 Prima::Header - a multi-tabbed header widget.
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9 The widget class provides functionality of several button-like caption
10 tabs, that can be moved and resized by the user. The class was
11 implemented with a view to serve as a table header for list and grid
12 widgets.
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15 Events
16 Click INDEX
17 Called when the user clicks on the tab, positioned at INDEX.
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19 DrawItem CANVAS, INDEX, X1, Y1, X2, Y2, TEXT_BASELINE
20 A callback used to draw the tabs. CANVAS is the output object;
21 INDEX is the index of a tab. X1,Y2,X2,Y2 are the coordinates of
22 the boundaries of the tab rectangle; TEXT_BASELINE is a pre-
23 calculated vertical position for eventual centered text output.
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25 MeasureItem INDEX, RESULT
26 Stores in scalar, referenced by RESULT, the width or height (
27 depending on vertical property value ) of the tab in pixels.
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29 MoveItem OLD_INDEX, NEW_INDEX
30 Called when the user moves a tab from its old location, specified
31 by OLD_INDEX, to the NEW_INDEX position. By the time of call, all
32 internal structures are updated.
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34 SizeItem INDEX, OLD_EXTENT, NEW_EXTENT
35 Called when the user resizes a tab in INDEX position. OLD_EXTENT
36 and NEW_EXTENT are either width or height of the tab, depending on
37 vertical property value.
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39 SizeItems
40 Called when more than one tab has changed its extent. This might
41 happen as a result of user action, as well as an effect of set-
42 calling to some properties.
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44 Properties
45 clickable BOOLEAN
46 Selects if the user is allowed to click the tabs.
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48 Default value: 1
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50 dragable BOOLEAN
51 Selects if the user is allowed to move of the tabs.
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53 Default value: 1
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55 items ARRAY
56 Array of scalars, representing the internal data of the tabs. By
57 default the scalars are treated as text strings.
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59 minTabWidth INTEGER
60 A minimal extent in pixels a tab must occupy.
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62 Default value: 2
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64 offset INTEGER
65 An offset on the major axis ( depends on vertical property value )
66 that the widget is drawn with. Used for the conjunction with list
67 widgets ( see Prima::DetailedList ), when the list is horizontally
68 or vertically scrolled.
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70 Default value: 0
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72 pressed INTEGER
73 Contains the index of the currently pressed tab. A -1 value is
74 selected when no tabs are pressed.
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76 Default value: -1
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78 scalable BOOLEAN
79 Selects if the user is allowed to resize the tabs.
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81 Default value: 1
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83 vertical BOOLEAN
84 If 1, the tabs are aligned vertically; the offset, widths property
85 and extent parameters of the callback notification assume heights
86 of the tabs.
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88 If 0, the tabs are aligned horizontally, and the extent properties
89 and parameters assume tab widths.
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91 widths ARRAY
92 Array of integer values, corresponding to the extents of the tabs.
93 The extents are widths ( "vertical" is 0 ) or heights ( "vertical"
94 is 1 ).
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96 Methods
97 tab2offset INDEX
98 Returns offset of the INDEXth tab ( without regard to offset
99 property value ).
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101 tab2rect INDEX
102 Returns four integers, representing the rectangle area, occupied by
103 the INDEXth tab ( without regard to offset property value ).
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106 Dmitry Karasik, <dmitry@karasik.eu.org>.
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109 Prima, Prima::Widget, Prima::DetailedList, examples/sheet.pl.
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113perl v5.34.0 2021-07-22 Prima::Header(3)