com.luongbui.gdx.libpd.pianotest.screen.PianoScreen.java Source code

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Here is the source code for com.luongbui.gdx.libpd.pianotest.screen.PianoScreen.java

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/*******************************************************************************
 * Copyright 2014 Manh Luong   Bui
 * 
 * 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.luongbui.gdx.libpd.pianotest.screen;

import com.badlogic.gdx.Gdx;
import com.badlogic.gdx.Screen;
import com.badlogic.gdx.graphics.GL20;
import com.badlogic.gdx.math.MathUtils;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.scenes.scene2d.Stage;
import com.badlogic.gdx.utils.Scaling;
import com.luongbui.gdx.libpd.pianotest.PianoTest;
import com.luongbui.gdx.libpd.pianotest.character.PianoKey;
import com.luongbui.gdx.libpd.pianotest.character.SwitchButton;

public class PianoScreen implements Screen {

    public static final int WIDTH_VIRTUAL = 1920;
    public static final int HEIGHT_VIRTUAL = 1080;

    public static final int KEYS_NUM = 8;

    private static final float HERTZ[] = { 440.000f, 493.883f, 523.251f, 587.330f, 659.255f, 698.456f, 783.991f,
            880.000f };

    private final PianoTest game;

    private Stage stage;

    private PianoKey keys[];

    private SwitchButton switchBtn;

    private int viewportX;
    private int viewportY;
    private int viewportWidth;
    private int viewportHeight;

    public PianoScreen(final PianoTest game) {
        this.game = game;
        stage = new Stage();
        keys = new PianoKey[KEYS_NUM];
        for (int i = 0; i < keys.length; i++) {
            keys[i] = new PianoKey(((WIDTH_VIRTUAL / (KEYS_NUM + 1)) * (i + 1)) + 1, 1,
                    WIDTH_VIRTUAL / (KEYS_NUM + 1), HEIGHT_VIRTUAL - 1, HERTZ[i], game);
            stage.addActor(keys[i]);
        }
        switchBtn = new SwitchButton(1, (HEIGHT_VIRTUAL - 1) / 2, WIDTH_VIRTUAL / (KEYS_NUM + 1),
                (HEIGHT_VIRTUAL - 1) / 2, game);
        stage.addActor(switchBtn);
        Gdx.input.setInputProcessor(stage);
    }

    public void switchTheme() {
        for (int i = 0; i < keys.length; i++) {
            keys[i].switchTheme();
        }
    }

    @Override
    public void render(float delta) {
        // Must call this again, to keep the new viewport. Otherwise it is stretched in iOS.
        // See libgdx issue #1415 - https://github.com/libgdx/libgdx/issues/1415
        Gdx.gl.glViewport(viewportX, viewportY, viewportWidth, viewportHeight);

        Gdx.gl.glClearColor(1, 1, 1, 1);
        Gdx.gl.glClear(GL20.GL_COLOR_BUFFER_BIT);
        stage.act(delta);
        stage.draw();
    }

    @Override
    public void resize(int width, int height) {
        Vector2 size = Scaling.stretch.apply(WIDTH_VIRTUAL, HEIGHT_VIRTUAL, width, height);
        viewportX = MathUtils.ceilPositive(width - size.x) / 2;
        viewportY = MathUtils.ceilPositive(height - size.y) / 2;
        viewportWidth = MathUtils.floorPositive(size.x);
        viewportHeight = MathUtils.floorPositive(size.y);
        Gdx.gl.glViewport(viewportX, viewportY, viewportWidth, viewportHeight);
        stage.setViewport(WIDTH_VIRTUAL, HEIGHT_VIRTUAL, true, viewportX, viewportY, viewportWidth, viewportHeight);
    }

    @Override
    public void show() {

    }

    @Override
    public void hide() {

    }

    @Override
    public void pause() {

    }

    @Override
    public void resume() {

    }

    @Override
    public void dispose() {
        stage.dispose();
    }

}