com.inbook.resource.PngSprite.java Source code

Introduction

Here is the source code for com.inbook.resource.PngSprite.java

Source

/*
 * Copyright (c) 2008-2016
 * LANIT
 * All rights reserved.
 *
 * This product and related documentation are protected by copyright and
 * distributed under licenses restricting its use, copying, distribution, and
 * decompilation. No part of this product or related documentation may be
 * reproduced in any form by any means without prior written authorization of
 * LANIT and its licensors, if any.
 *
 * $Id$
 */
package com.inbook.resource;

import javafx.embed.swing.SwingFXUtils;
import javafx.scene.image.Image;
import org.apache.commons.io.IOUtils;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

public class PngSprite implements Sprite {
    private static final String SPRITE_DESCRIPTOR_EXT = ".descriptor";
    private static final String SPRITE_SMALL_IMAGE_EXT = "_small.png";
    private static final String SPRITE_MEDIUM_IMAGE_EXT = "_medium.png";
    private static final String SPRITE_LARGE_IMAGE_EXT = "_large.png";

    private static final int SCALE_SMALL_WIDTH = 16, SCALE_SMALL_HEIGHT = 16;
    private static final int SCALE_MEDIUM_WIDTH = 32, SCALE_MEDIUM_HEIGHT = 32;
    private static final int SCALE_LARGE_WIDTH = 64, SCALE_LARGE_HEIGHT = 64;

    private final String name;
    private final String path;
    private Map<String, Integer> positions;
    private BufferedImage smallImage;
    private BufferedImage mediumImage;
    private BufferedImage largeImage;

    public PngSprite(String path, String name) {
        this.path = path;
        this.name = name;
        this.positions = new HashMap<>();

        loadImages();
        loadParts();
    }

    private void loadImages() {
        try {
            smallImage = ImageIO.read(getStream(SPRITE_SMALL_IMAGE_EXT));
            mediumImage = ImageIO.read(getStream(SPRITE_MEDIUM_IMAGE_EXT));
            largeImage = ImageIO.read(getStream(SPRITE_LARGE_IMAGE_EXT));
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    @SuppressWarnings("unchecked")
    private void loadParts() {
        try (InputStream io = getStream(SPRITE_DESCRIPTOR_EXT)) {
            List<String> list = IOUtils.readLines(io);

            for (int i = 0; i < list.size(); i++) {
                String iconName = list.get(i);
                positions.put(iconName, i);
            }

        } catch (IOException ex) {
            ex.printStackTrace();
        }
    }

    private InputStream getStream(String ext) {
        return getClass().getClassLoader().getResourceAsStream(path + name + ext);
    }

    public Image getSmallIcon(String iconName) {
        return getIcon(smallImage, SCALE_SMALL_WIDTH, SCALE_SMALL_HEIGHT, iconName);
    }

    @Override
    public Image getMediumIcon(String iconName) {
        return getIcon(mediumImage, SCALE_MEDIUM_WIDTH, SCALE_MEDIUM_HEIGHT, iconName);
    }

    @Override
    public Image getLargeIcon(String iconName) {
        return getIcon(largeImage, SCALE_LARGE_WIDTH, SCALE_LARGE_HEIGHT, iconName);
    }

    public Image getIcon(BufferedImage source, int width, int height, String iconName) {
        int position = positions.get(iconName);
        BufferedImage subimage = source.getSubimage(0, position * height, width, height);
        return SwingFXUtils.toFXImage(subimage, null);
    }

}