package com.xt.iconcolorchanger;

import android.graphics.ColorMatrix;
import android.graphics.ColorMatrixColorFilter;
import android.widget.ImageView;

import com.google.appinventor.components.annotations.SimpleFunction;
import com.google.appinventor.components.runtime.AndroidNonvisibleComponent;
import com.google.appinventor.components.runtime.AndroidViewComponent;
import com.google.appinventor.components.runtime.ComponentContainer;

public class IconColorChanger extends AndroidNonvisibleComponent {
    public IconColorChanger(ComponentContainer container) {
        super(container.$form());
    }

    @SimpleFunction(description = "Applies a color filter to the icons")
    public void ApplyColorFilter(AndroidViewComponent imageComponent, int color) {
        if (imageComponent.getView() instanceof ImageView) {
            final ImageView imageView = (ImageView) imageComponent.getView();
            imageView.post(new Runnable() {
                @Override
                public void run() {
                    float alpha = ((color >> 24) & 0xff) / 255f;
                    float red = ((color >> 16) & 0xff) / 255f;
                    float green = ((color >> 8) & 0xff) / 255f;
                    float blue = (color & 0xff) / 255f;

                    float[] matrix = {
                        0, 0, 0, 0, red * 255,
                        0, 0, 0, 0, green * 255,
                        0, 0, 0, 0, blue * 255,
                        0, 0, 0, alpha, 0
                    };

                    ColorMatrixColorFilter colorFilter = new ColorMatrixColorFilter(new ColorMatrix(matrix));
                    imageView.setColorFilter(colorFilter);
                }
            });
        }
    }

    @SimpleFunction(description = "Removes the color filter from the Image component")
    public void RemoveColorFilter(AndroidViewComponent imageComponent) {
        if (imageComponent.getView() instanceof ImageView) {
            final ImageView imageView = (ImageView) imageComponent.getView();
            imageView.post(new Runnable() {
                @Override
                public void run() {
                    imageView.clearColorFilter();
                }
            });
        }
    }
}