me.priyesh.chromasample.MainActivity.java Source code

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Here is the source code for me.priyesh.chromasample.MainActivity.java

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/*
 * Copyright 2016 Priyesh Patel
 *
 * 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 me.priyesh.chromasample;

import android.graphics.drawable.ColorDrawable;
import android.graphics.drawable.TransitionDrawable;
import android.os.Bundle;
import android.support.v4.content.ContextCompat;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;

import butterknife.Bind;
import butterknife.ButterKnife;
import butterknife.OnClick;
import me.priyesh.chroma.ChromaDialog;
import me.priyesh.chroma.ColorMode;
import me.priyesh.chroma.ColorSelectListener;

public class MainActivity extends AppCompatActivity {

    private static final String KEY_COLOR = "extra_color";
    private static final String KEY_COLOR_MODE = "extra_color_mode";

    @Bind(R.id.toolbar)
    Toolbar mToolbar;
    @Bind(R.id.text_view)
    TextView mColorTextView;
    @Bind(R.id.color_mode_spinner)
    Spinner mColorModeSpinner;

    private int mColor;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        ButterKnife.bind(this);

        setSupportActionBar(mToolbar);
        int statusBarHeight = statusBarHeight();
        mToolbar.setPadding(0, statusBarHeight, 0, 0);
        mToolbar.getLayoutParams().height += statusBarHeight;

        mColor = savedInstanceState != null ? savedInstanceState.getInt(KEY_COLOR)
                : ContextCompat.getColor(this, R.color.colorPrimary);

        ColorMode colorMode = savedInstanceState != null
                ? ColorMode.valueOf(savedInstanceState.getString(KEY_COLOR_MODE))
                : ColorMode.RGB;

        ArrayAdapter<ColorMode> adapter = new ArrayAdapter<>(this, android.R.layout.simple_spinner_dropdown_item,
                ColorMode.values());

        mColorModeSpinner.setAdapter(adapter);
        mColorModeSpinner.setSelection(adapter.getPosition(colorMode));

        updateTextView(mColor);
        updateToolbar(mColor, mColor);
    }

    @Override
    protected void onSaveInstanceState(Bundle outState) {
        outState.putInt(KEY_COLOR, mColor);
        outState.putString(KEY_COLOR_MODE, mColorModeSpinner.getSelectedItem().toString());
        super.onSaveInstanceState(outState);
    }

    @OnClick(R.id.fab)
    void onFabClick() {
        showColorPickerDialog();
    }

    private void showColorPickerDialog() {
        new ChromaDialog.Builder().initialColor(mColor).colorMode((ColorMode) mColorModeSpinner.getSelectedItem())
                .onColorSelected(new ColorSelectListener() {
                    @Override
                    public void onColorSelected(int color) {
                        updateTextView(color);
                        updateToolbar(mColor, color);
                        mColor = color;
                    }
                }).create().show(getSupportFragmentManager(), "dialog");
    }

    private void updateTextView(int color) {
        mColorTextView.setText(String.format("#%06X", 0xFFFFFF & color));
    }

    private void updateToolbar(int oldColor, int newColor) {
        final TransitionDrawable transition = new TransitionDrawable(
                new ColorDrawable[] { new ColorDrawable(oldColor), new ColorDrawable(newColor) });

        mToolbar.setBackground(transition);
        transition.startTransition(300);
    }

    private int statusBarHeight() {
        int resId = getResources().getIdentifier("status_bar_height", "dimen", "android");
        return resId != 0 ? getResources().getDimensionPixelSize(resId) : 0;
    }
}