ColorButton

Introduction

The ColorButton widget allow the user to select a color. You can use different color choosers for the color models RGB and HSB, a color wheel and a color list.

Constructor

• ColorButton(Composite parent, int style)
  • parent the parent Composite
  • style the style of widget to construct.

Methods

• void setRGB(RGB) set the initial color value.
• RGB getRGB() gets the selected color or the initial color, when no color selected.
• boolean chooseRGB() opens the color chooser and allows the user to select a color (for use inside a selection listener).
• void setColorChooserFactory(IColorChooserFactory) sets a factory for creating the color chooser.
• void setColorConsumer(Consumer<RGB>) sets a consumer for the selected color.
• void setDropDownArrowVisible(boolean) switch visibility of drop down arrow.
• boolean isDropDownArrowVisible() returns the visibility of drop down arrow.
• You can also use all SWT Button methods.

Color choosers

• ColorChooserHSB, selects a color by hue, brightness and saturation.
• ColorChooserRGB, selects a color by red, green, blue.
• ColorCircleChooser, selects a color by hue, brightness and saturation. The hue is displayed as an color circle.
• ColorWheelChooser, selects a color from a color wheel.

A color chooser has the following features:

• Define a color resolution (reduces the maximum number of displayed colors).
• Show/hide RGB info.
• Preview with old and new color.

Color picker

• ColorPicker, selects a color from a predefined or user defined color list. When you call setRGB(RGB), the nearest color in the list is selected.

Examples

• Sample1 demonstrates the use with a default color chooser factory and a classical selection listener.
• Sample2 shows the use of an color consumer and the definition of a color chooser factory.
• Sample3 shows the use of an color picker with a list of predefined colors.
• Sample4 uses an color chooser as widget.