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Prima::Dialog::ColorDialog(3) User Contributed Perl Documentation Prima::Dialog::ColorDialog(3)

NAME

Prima::Dialog::ColorDialog - standard color selection facilities

SYNOPSIS

        use Prima qw(Dialog::ColorDialog Application);
        my $p = Prima::Dialog::ColorDialog-> new(
                quality => 1,
        );
        printf "color: %06x", $p-> value if $p-> execute == mb::OK;

DESCRIPTION

The module contains two packages, "Prima::Dialog::ColorDialog" and "Prima::ColorComboBox", used as standard tools for the interactive color selection. "Prima::ColorComboBox" is a modified combo widget that provides selecting colors from a predefined palette, but also can invoke a "Prima::Dialog::ColorDialog" window.

Prima::Dialog::ColorDialog

Properties

If set, allows only gray colors
The setting can increase the visual quality of the dialog if run on paletted displays.

Default value: 0

Selects the color represented by the color wheel and other dialog controls.

Default value: "cl::White"

Methods

Converts a color from HSV to RGB format and returns three 8-bit integer values, red, green, and blue components.
Converts color from RGB to HSV format and returns three numerical values, hue, saturation, and luminosity components.
Maps X and Y coordinate values onto a color wheel with RADIUS in pixels. The code uses RADIUS = 119 for mouse position coordinate mapping. Returns three values, - hue, saturation, and error flag. If the error flag is set, the conversion is failed.
Maps hue and saturation onto a 256-pixel wide color wheel, and returns X and Y coordinates of the corresponding point.
Creates a color wheel with the number of SHADES given, drawn on a BACK_COLOR background. Returns a "Prima::DeviceBitmap" object.
Creates a circular 1-bit mask with a radius derived from SHAPES. SHAPES must be the same as passed to create_wheel. Returns a "Prima::Image" object.

Events

Called when the user starts dragging a color from the color wheel by the left mouse button and an optional combination of Alt, Ctrl, and Shift keys. $PROPERTY is one of the "Prima::Widget" color properties, and depends on a combination of the following keys: 

        Alt              backColor
        Ctrl             color
        Alt+Shift        hiliteBackColor
        Ctrl+Shift       hiliteColor
        Ctrl+Alt         disabledColor
        Ctrl+Alt+Shift   disabledBackColor

The default action reflects the property to be changed in the dialog title

The notification is called when the value property is changed, either interactively or as a result of a direct call.
Called when the user releases the mouse button over a Prima widget. The default action sets "$WIDGET->$PROPERTY" to the selected color value.

Variables

$colorWheel
Contains the cached result of the create_wheel method.
$colorWheelShape
Contains the cached result of the create_wheel_shape method.

Prima::ColorComboBox

Events

"nt::Action" callback, designed to map combo palette index into an RGB color. INDEX is an integer from 0 to colors - 1, COLOR_PTR is a reference to the result scalar where the notification is expected to store the resulting color.

Properties

Defines the amount of colors in the fixed palette of the combo box.
If set, allows only gray colors
Contains the color selection as a 24-bit integer value.

SEE ALSO

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

AUTHOR

Dmitry Karasik, <dmitry@karasik.eu.org>.

2024-02-01 perl v5.38.2