ColorStateDrawable.java

package com.moez.QKSMS.ui.view.colorpicker;

import android.graphics.Color;
import android.graphics.PorterDuff;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;

public class ColorStateDrawable extends LayerDrawable {
    private int mColor;

    public ColorStateDrawable(Drawable[] drawables, int color) {
        super(drawables);
        mColor = color;
    }

    private int getPressedColor(int color) {
        float[] hsv = new float[3];
        Color.colorToHSV(color, hsv);
        hsv[2] = (0.7F * hsv[2]);
        return Color.HSVToColor(hsv);
    }

    public boolean isStateful() {
        return true;
    }

    protected boolean onStateChange(int[] states) {
        boolean pressed = false;
        for (int state : states) {
            if (state == android.R.attr.state_pressed || state == android.R.attr.state_focused) {
                pressed = true;
            }
        }

        if (pressed) {
            super.setColorFilter(getPressedColor(mColor), PorterDuff.Mode.SRC_ATOP);
        } else {
            super.setColorFilter(mColor, PorterDuff.Mode.SRC_ATOP);
        }

        return super.onStateChange(states);
    }
}