FastHub/app/src/main/java/com/fastaccess/helper/ViewHelper.java

package com.fastaccess.helper;

import android.content.Context;
import android.content.res.ColorStateList;
import android.content.res.Configuration;
import android.content.res.Resources;
import android.content.res.TypedArray;
import android.graphics.Color;
import android.graphics.PorterDuff;
import android.graphics.Rect;
import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.RippleDrawable;
import android.graphics.drawable.ShapeDrawable;
import android.graphics.drawable.StateListDrawable;
import android.graphics.drawable.shapes.RoundRectShape;
import android.support.annotation.ColorInt;
import android.support.annotation.IdRes;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;
import android.support.design.widget.NavigationView;
import android.util.TypedValue;
import android.view.View;
import android.view.inputmethod.InputMethodManager;
import android.widget.TextView;

import com.fastaccess.R;

import java.util.Arrays;


/**
 * Created by kosh20111 on 10/7/2015 10:42 PM
 */
public class ViewHelper {

    public static int getPrimaryDarkColor(Context context) {
        TypedValue typedValue = new TypedValue();
        TypedArray a = context.obtainStyledAttributes(typedValue.data, new int[]{R.attr.colorPrimaryDark});
        int color = a.getColor(0, 0);
        a.recycle();
        return color;
    }

    public static int toPx(Context context, int dp) {
        return (int) TypedValue.applyDimension(TypedValue.COMPLEX_UNIT_PX, dp, context.getResources().getDisplayMetrics());
    }

    public static Drawable tintDrawable(@NonNull Drawable drawable, @ColorInt int color) {
        drawable.mutate().setColorFilter(color, PorterDuff.Mode.SRC_ATOP);
        return drawable;
    }

    public static Drawable getDrawableSelector(int normalColor, int pressedColor) {
        return new RippleDrawable(ColorStateList.valueOf(pressedColor), getRippleMask(normalColor), getRippleMask(normalColor));
    }

    private static Drawable getRippleMask(int color) {
        float[] outerRadii = new float[8];
        Arrays.fill(outerRadii, 3);
        RoundRectShape r = new RoundRectShape(outerRadii, null, null);
        ShapeDrawable shapeDrawable = new ShapeDrawable(r);
        shapeDrawable.getPaint().setColor(color);
        return shapeDrawable;
    }

    private static StateListDrawable getStateListDrawable(int normalColor, int pressedColor) {
        StateListDrawable states = new StateListDrawable();
        states.addState(new int[]{android.R.attr.state_pressed}, new ColorDrawable(pressedColor));
        states.addState(new int[]{android.R.attr.state_focused}, new ColorDrawable(pressedColor));
        states.addState(new int[]{android.R.attr.state_activated}, new ColorDrawable(pressedColor));
        states.addState(new int[]{android.R.attr.state_selected}, new ColorDrawable(pressedColor));
        states.addState(new int[]{}, new ColorDrawable(normalColor));
        return states;
    }

    public static ColorStateList textSelector(int normalColor, int pressedColor) {
        return new ColorStateList(
                new int[][]{
                        new int[]{android.R.attr.state_pressed},
                        new int[]{android.R.attr.state_focused},
                        new int[]{android.R.attr.state_activated},
                        new int[]{android.R.attr.state_selected},
                        new int[]{}
                },
                new int[]{
                        pressedColor,
                        pressedColor,
                        pressedColor,
                        pressedColor,
                        normalColor
                }
        );
    }

    private static boolean isTablet(Resources resources) {
        return (resources.getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK) >= Configuration.SCREENLAYOUT_SIZE_LARGE;
    }

    public static boolean isTablet(Context context) {
        return isTablet(context.getResources());
    }

    private static void setTextViewMenuCounter(@NonNull NavigationView navigationView, @IdRes int itemId, int count) {
        TextView view = (TextView) navigationView.getMenu().findItem(itemId).getActionView();
        view.setText(String.format("%s", count));
    }

    public static boolean isLandscape(Resources resources) {
        return resources.getConfiguration().orientation == Configuration.ORIENTATION_LANDSCAPE;
    }

    @SuppressWarnings("WeakerAccess") public static Rect getLayoutPosition(@NonNull View view) {
        Rect myViewRect = new Rect();
        view.getGlobalVisibleRect(myViewRect);
        return myViewRect;
    }

    @SuppressWarnings("WeakerAccess") @Nullable public static String getTransitionName(@NonNull View view) {
        return !InputHelper.isEmpty(view.getTransitionName()) ? view.getTransitionName() : null;
    }

    @SuppressWarnings("WeakerAccess") public static void showKeyboard(@NonNull View v, @NonNull Context activity) {
        InputMethodManager imm = (InputMethodManager) activity.getSystemService(Context.INPUT_METHOD_SERVICE);
        imm.showSoftInput(v, 0);
    }

    public static void showKeyboard(@NonNull View v) {
        showKeyboard(v, v.getContext());
    }

    public static void hideKeyboard(@NonNull View view) {
        InputMethodManager inputManager = (InputMethodManager) view.getContext().getSystemService(Context.INPUT_METHOD_SERVICE);
        inputManager.hideSoftInputFromWindow(view.getWindowToken(), 0);
    }

    @ColorInt public static int generateTextColor(int color) {
        return Color.rgb(255 - Color.red(color),
                255 - Color.green(color),
                255 - Color.blue(color));
    }

}