1Prima::ColorDialog(3) User Contributed Perl DocumentationPrima::ColorDialog(3)
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NAME

6       Prima::ColorDialog - standard color selection facilities
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SYNOPSIS

9               use Prima qw(StdDlg Application);
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11               my $p = Prima::ColorDialog-> create(
12                       quality => 1,
13               );
14               printf "color: %06x", $p-> value if $p-> execute == mb::OK;
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DESCRIPTION

17       The module contains two packages, "Prima::ColorDialog" and
18       "Prima::ColorComboBox", used as standard tools for interactive color
19       selection. "Prima::ColorComboBox" is a modified combo widget, which
20       provides selecting from predefined palette but also can invoke
21       "Prima::ColorDialog" window.
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Prima::ColorDialog

24   Properties
25       quality BOOLEAN
26           Used to increase visual quality of the dialog if run on paletted
27           displays.
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29           Default value: 0
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31       value COLOR
32           Selects the color, represented by the color wheel and other dialog
33           controls.
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35           Default value: "cl::White"
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37   Methods
38       hsv2rgb HUE, SATURATION, LUMINOSITY
39           Converts color from HSV to RGB format and returns three integer
40           values, red, green, and blue components.
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42       rgb2hsv RED, GREEN, BLUE
43           Converts color from RGB to HSV format and returns three numerical
44           values, hue, saturation, and luminosity components.
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46       rgb2value RED, GREEN, BLUE
47           Combines separate channels into single 24-bit RGB value and returns
48           the result.
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50       value2rgb COLOR
51           Splits 24-bit RGB value into three channels, red, green, and blue
52           and returns three integer values.
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54       xy2hs X, Y, RADIUS
55           Maps X and Y coordinate values onto a color wheel with RADIUS in
56           pixels.  The code uses RADIUS = 119 for mouse position coordinate
57           mapping.  Returns three values, - hue, saturation and error flag.
58           If error flag is set, the conversion has failed.
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60       hs2xy HUE, SATURATION
61           Maps hue and saturation onto 256-pixel wide color wheel, and
62           returns X and Y coordinates of the corresponding point.
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64       create_wheel SHADES, BACK_COLOR
65           Creates a color wheel with number of SHADES given, drawn on a
66           BACK_COLOR background, and returns a "Prima::DeviceBitmap" object.
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68       create_wheel_shape SHADES
69           Creates a circular 1-bit mask, with radius derived from SHAPES.
70           SHAPES must be same as passed to create_wheel.  Returns
71           "Prima::Image" object.
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73   Events
74       BeginDragColor $PROPERTY
75           Called when the user starts dragginh a color from the color wheel
76           by with left mouse button and combination of Alt, Ctrl, and Shift
77           keys. $PROPERTY is one of "Prima::Widget" color properties, and
78           depends on combination of keys:
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80                   Alt              backColor
81                   Ctrl             color
82                   Alt+Shift        hiliteBackColor
83                   Ctrl+Shift       hiliteColor
84                   Ctrl+Alt         disabledColor
85                   Ctrl+Alt+Shift   disabledBackColor
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87           Default action reflects the property to be changes in the dialog
88           title
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90       Change
91           The notification is called when the value property is changed,
92           either interactively or as a result of direct call.
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94       EndDragColor $PROPERTY, $WIDGET
95           Called when the user releases the mouse drag over a Prima widget.
96           Default action sets "$WIDGET->$PROPERTY" to the current color
97           value.
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99   Variables
100       $colorWheel
101           Contains cached result of create_wheel call.
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103       $colorWheelShape
104           Contains cached result of create_wheel_shape call.
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Prima::ColorComboBox

107   Events
108       Colorify INDEX, COLOR_PTR
109           "nt::Action" callback, designed to map combo palette index into a
110           RGB color.  INDEX is an integer from 0 to colors - 1, COLOR_PTR is
111           a reference to a result scalar, where the notification is expected
112           to write the resulting color.
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114   Properties
115       colors INTEGER
116           Defines amount of colors in the fixed palette of the combo box.
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118       value COLOR
119           Contains the color selection as 24-bit integer value.
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SEE ALSO

122       Prima, Prima::ComboBox, examples/cv.pl.
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AUTHOR

125       Dmitry Karasik, <dmitry@karasik.eu.org>.
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129perl v5.28.1                      2019-02-02             Prima::ColorDialog(3)