com.intrepid.studio.component.Button.java Source code

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Here is the source code for com.intrepid.studio.component.Button.java

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/**
 * Copyleft (C) 2016  Constantino, Nilton Rogerio <niltonrc@gmail.com>
 *
 * @author "Nilton R Constantino"
 * aKa bQUARKz <niltonrc@gmail, bquarkz@gmail.com>
 *
 * Everything about the respective software copyright can be found in the
 * "LICENSE" file included in the project source tree.
 *
 * The code was written based on study principles and can be enjoyed for
 * all comunity without problems.
 */
package com.intrepid.studio.component;

import java.util.concurrent.Future;

import com.badlogic.gdx.graphics.Color;
import com.badlogic.gdx.graphics.Texture;
import com.badlogic.gdx.graphics.g2d.BitmapFont;
import com.intrepid.nicge.utilz.graphics.GraphicsBatch;
import com.intrepid.nicge.utilz.graphics.TextureWorks;
import com.intrepid.nicge.utilz.threads.ThreadExecutor;
import com.intrepid.nicge.utilz.threads.ThreadRunnable;

public class Button implements Component {
    // ****************************************************************************************
    // Const Fields
    // ****************************************************************************************
    private static final int BUTTON_ACTION = MOUSE_BUTTON_LEFT;
    private static final ColorsStructure idle = new ColorsStructure(Color.BLACK, Color.WHITE);
    private static final ColorsStructure over = new ColorsStructure(Color.YELLOW, Color.GRAY);
    private static final ColorsStructure clicked = new ColorsStructure(Color.RED, Color.DARK_GRAY);
    private static final ColorsStructure locked = new ColorsStructure(Color.YELLOW, Color.GREEN);

    // ****************************************************************************************
    // Common Fields
    // ****************************************************************************************
    private int width;
    private int x;
    private int y;
    private int height;
    private String text;
    private Texture texture;
    private boolean mouseOverMe;
    private boolean isClicked;
    private boolean isActived;
    private BitmapFont bitmapFont;
    private int diffx;
    private int diffy;
    private ThreadRunnable command;
    private boolean cmdLockSystem;
    private Future<ThreadRunnable> execute;
    private boolean lockedIn;

    // ****************************************************************************************
    // Constructors
    // ****************************************************************************************
    Button(int x, int y, int width, int height, String text) {
        this(x, y, width, height, text, null, false);
    }

    Button(int x, int y, int width, int height, String text, ThreadRunnable command, boolean cmdLockSystem) {
        this.x = x;
        this.y = y;
        this.width = width;
        this.height = height;
        this.text = text;
        this.command = command;
        this.cmdLockSystem = cmdLockSystem;
        this.mouseOverMe = false;
        this.isClicked = false;
        this.isActived = false;
        this.lockedIn = false;
        this.bitmapFont = new BitmapFont();
        this.texture = TextureWorks.createTexture(width, height, Color.WHITE);

        calculateDiff(width, height, text);
    }

    // ****************************************************************************************
    // Methods
    // ****************************************************************************************
    private void calculateDiff(int width, int height, String text) {
        int length = text.length();
        int letterWidth = 4;
        int letterHeight = 5;
        diffx = (width / 2) - (length * letterWidth);
        diffy = (height / 2) + letterHeight;
    }

    @Override
    public void checkMouseOver(int screenX, int screenY) {
        if (lockedIn)
            return;

        boolean cx = ((screenX >= x) && (screenX <= (x + width)));
        boolean cy = ((screenY >= y) && (screenY <= (y + height)));

        if (cx && cy)
            mouseOverMe = true;
        else
            mouseOverMe = false;
    }

    @Override
    public void mouseButtonPressed(int screenX, int screenY, int button) {
        if (lockedIn)
            return;

        checkMouseOver(screenX, screenY);

        if (mouseOverMe) {
            if (button == BUTTON_ACTION) {
                isClicked = true;
            }
        }
    }

    @Override
    public void mouseButtonUnPressed(int screenX, int screenY, int button) {
        if (lockedIn)
            return;

        checkMouseOver(screenX, screenY);

        if (button == BUTTON_ACTION) {
            if (mouseOverMe && isClicked) {
                isActived = true;
            } else {
                isActived = false;
            }
        }

        isClicked = false;
    }

    @Override
    public void update() {
        if (isActived && (command != null)) {
            if (cmdLockSystem) {
                lockedIn = true;
                execute = new ThreadExecutor().execute(command);
            } else {
                command.run();
            }
        }

        if (cmdLockSystem) {
            if (execute != null && execute.isDone()) {
                lockedIn = false;
            }
        } else {
            lockedIn = false;
        }

        isActived = false;
    }

    @Override
    public void display(GraphicsBatch batch) {
        ColorsStructure color = idle;
        if (mouseOverMe) {
            color = over;
        }

        if (isClicked) {
            color = clicked;
        }

        if (lockedIn) {
            color = locked;
        }

        Color c = batch.getColor();
        batch.setColor(color.button);
        batch.draw(texture, x, y);
        batch.setColor(c);

        bitmapFont.setColor(color.font);
        bitmapFont.draw(batch, text, x + diffx, y + diffy);
    }

    // ****************************************************************************************
    // Getters And Setters Methods
    // ****************************************************************************************
    public boolean isActive() {
        return isActived;
    }

    // ****************************************************************************************
    // Patterns
    // ****************************************************************************************
    private static class ColorsStructure {
        public Color font;
        public Color button;

        ColorsStructure(Color font, Color button) {
            this.font = font;
            this.button = button;
        }
    }

}