Colors

Doodle supports RGBA colors (via the Color class), for rendering content to the Canvas via paints like ColorPaint. Colors can be created explicitly using hex notation, or you can use any of the built-in values (i.e. Red). Colors can also be derived from others with one of the many utility functions like lighter, darker, or by changing opacity.

package rendering

import io.nacular.doodle.drawing.Color
import io.nacular.doodle.drawing.darker
import io.nacular.doodle.drawing.opacity
import io.nacular.doodle.drawing.paint

fun colors() {
//sampleStart
    Color(0xff0000u                ) // create red
    Color(0xffffffu, opacity = 0.5f) // white with 0.5 opacity
    Color.Red                        // build-in red
    Color.Blue opacity 0.5f          // blue with 0.5 opacity
    Color.Blue.inverted              // inverse of blue
    Color.Lightgray.darker(0.5f)     // darker gray
    Color.Blue.paint                 // paint from a color
//sampleEnd
}

HSL and HSV Colors

Sometimes it is more effective to work within other color spaces. Doodle has built-in utilities for HSL and HSV colors, though these colors cannot be used directly for rendering. That said, there are many utilities for easily transforming between them and RGBA.

The ColorPicker controls uses HSV internally for example.

Colors​

HSL and HSV Colors​

Colors

HSL and HSV Colors