X-Git-Url: https://git.hedgecode.org/?p=chesshog.git;a=blobdiff_plain;f=chesshog-graphics%2Fsrc%2Fmain%2Fjava%2Forg%2Fhedgecode%2Fchess%2Fimg%2FAbstractImageLoader.java;fp=chesshog-graphics%2Fsrc%2Fmain%2Fjava%2Forg%2Fhedgecode%2Fchess%2Fimg%2FAbstractImageLoader.java;h=c9c4f044f9d09bbcdeb972177c289d10027cfe21;hp=0000000000000000000000000000000000000000;hb=e185f00e2252021d946f23f4871ae9721f7e65fa;hpb=612dc701d600159c094ab201c6de6136ae38dba9 diff --git a/chesshog-graphics/src/main/java/org/hedgecode/chess/img/AbstractImageLoader.java b/chesshog-graphics/src/main/java/org/hedgecode/chess/img/AbstractImageLoader.java new file mode 100644 index 0000000..c9c4f04 --- /dev/null +++ b/chesshog-graphics/src/main/java/org/hedgecode/chess/img/AbstractImageLoader.java @@ -0,0 +1,109 @@ +/* + * Copyright (c) 2018-2019. Developed by Hedgecode. + * + * 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 org.hedgecode.chess.img; + +import java.awt.image.BufferedImage; +import java.net.URI; +import java.net.URISyntaxException; +import java.nio.file.DirectoryStream; +import java.nio.file.Files; +import java.nio.file.Path; +import java.util.HashMap; +import java.util.Map; + +import javax.imageio.ImageIO; + +import org.hedgecode.chess.img.fs.FileSystemDetector; +import org.hedgecode.chess.img.fs.FileSystemContractor; + +/** + * Abstract common image loader with type state of saved resources. + * + * @author Dmitry Samoshin aka gotty + */ +public abstract class AbstractImageLoader implements ImageLoader { + + private static final String IMAGES_DIR = + ImageConstants.RESOURCE_ROOT_DIR.concat(ImageConstants.RESOURCE_IMAGES_DIR); + + private Type loadType; + + private URI imageResourceUri; + + public AbstractImageLoader() { + loadType = Type.STATELESS; + try { + if (FileSystemDetector.detectJar(getImageResourceUri())) { + loadType = Type.STATEFUL; + } + } catch (ImageException ignored) { + } + } + + protected abstract void clear(); + + @Override + public Type loadType() { + return loadType; + } + + protected void setLoadType(Type loadType) { + if (Type.STATELESS.equals(loadType)) { + clear(); + } + this.loadType = loadType; + } + + protected URI getImageResourceUri() throws ImageException { + if (imageResourceUri == null) { + try { + imageResourceUri = getClass().getResource(IMAGES_DIR).toURI(); + } catch (URISyntaxException e) { + throw new ImageException("image.unable.access.resource"); + } + } + return imageResourceUri; + } + + protected Map loadImages(String imagesPath, ImageFilter filter) + throws ImageException + { + Map images = new HashMap<>(); + try (FileSystemContractor fsc = FileSystemDetector.detect(getImageResourceUri())) { + try (DirectoryStream ds = + Files.newDirectoryStream( + fsc.getPath(imagesPath), filter + ) + ) { + for (Path file : ds) { + images.put( + FilenameUtils.getBaseName( + file.getFileName().toString() + ).toLowerCase(), + ImageIO.read( + fsc.getResourceAsStream(file) + ) + ); + } + } + } catch (Exception e) { + throw new ImageException("image.unable.access.resource", e.getMessage()); + } + return images; + } + +}