/*
 * Copyright (C) 2014 Hippo Seven
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.hippo.ehviewer.util;

import android.content.Context;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.GradientDrawable;
import android.graphics.drawable.StateListDrawable;

public final class Theme {

    public static final int GREY_COLOR = 0xffaaaaaa;
    public static final ColorDrawable GREY_DRAWABLE =
            new ColorDrawable(0xffaaaaaa);

    private static final int[] DARK_COLOR_TABLE = {
        0xffe91e63, 0xff9c27b0, 0xff673ab7,
        0xff3f51b5, 0xff5677fc, 0xff009688,
        0xff259b24
    };

    /**
     * get darker color of target color, alpha not change
     * @param color
     * @return
     */
    public static int getDarkerColor(int color) {
        float[] hsv = new float[3];
        Color.colorToHSV(color, hsv);
        hsv[2] *= 0.9f;
        return Color.HSVToColor(hsv);
    }

    public static StateListDrawable getClickDrawable(Context context, int color) {
        StateListDrawable sld = new StateListDrawable();
        ColorDrawable normal = new ColorDrawable(color);
        ColorDrawable dark = new ColorDrawable(getDarkerColor(color));

        sld.addState(new int[]{-android.R.attr.state_enabled}, GREY_DRAWABLE);
        sld.addState(new int[]{android.R.attr.state_enabled, android.R.attr.state_selected}, dark);
        sld.addState(new int[]{android.R.attr.state_enabled, android.R.attr.state_focused}, dark);
        sld.addState(new int[]{android.R.attr.state_enabled, android.R.attr.state_pressed}, dark);
        sld.addState(new int[]{}, normal);
        return sld;
    }

    public static StateListDrawable getRadiiClickDrawable(Context context, int color) {
        int corner = Ui.dp2pix(2);
        float[] cornerRadii = new float[]{
                corner, corner, corner, corner, corner, corner, corner, corner};

        StateListDrawable sld = new StateListDrawable();
        GradientDrawable normal = new GradientDrawable();
        normal.setShape(GradientDrawable.RECTANGLE);
        normal.setCornerRadii(cornerRadii);
        normal.setColor(color);
        GradientDrawable dark = new GradientDrawable();
        dark.setShape(GradientDrawable.RECTANGLE);
        dark.setCornerRadii(cornerRadii);
        dark.setColor(getDarkerColor(color));

        sld.addState(new int[]{-android.R.attr.state_enabled}, GREY_DRAWABLE);
        sld.addState(new int[]{android.R.attr.state_enabled, android.R.attr.state_selected}, dark);
        sld.addState(new int[]{android.R.attr.state_enabled, android.R.attr.state_focused}, dark);
        sld.addState(new int[]{android.R.attr.state_enabled, android.R.attr.state_pressed}, dark);
        sld.addState(new int[]{}, normal);
        return sld;
    }
}