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@@ -2,6 +2,8 @@ package utility;
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import java.awt.Image;
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import java.awt.image.BufferedImage;
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+import java.awt.image.ColorModel;
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+import java.awt.image.WritableRaster;
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import java.io.File;
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import java.io.FileInputStream;
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import java.io.FileNotFoundException;
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@@ -12,59 +14,35 @@ import javax.imageio.ImageIO;
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/**
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*
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- * @author TU-Darmstadt BP Gruppe 7 WS17/18
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- * Centralized resource loading methods
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- * for improved performance and easier troubleshooting.
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+ * @author TU-Darmstadt BP Gruppe 7 WS17/18 Centralized resource loading methods
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+ * for improved performance and easier troubleshooting.
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*/
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public class ImageImport {
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-
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- /**
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- * 30x30 pixel FileNotFound Icon, which can be shown without using I/O operations
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- * a red cross.
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- */
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- static private BufferedImage defaultImage;
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/*
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- * Save nothing: Reload every image whenever requested.
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- * Save external: Only save images that were found as external file.
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- * Save raw: Save all non-scaled images.
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- * Save everything: self-explanatory.
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+ * Save nothing: Reload every image whenever requested. Save external: Only save
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+ * images that were found as external file. Save raw: Save all non-scaled
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+ * images. Save everything: self-explanatory.
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*/
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private static HashMap<String, Image> imgStorage;
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- private static ImageImport xmp=new ImageImport();//Used to load resources from the JAR.
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-
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- static{
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- /*
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- * creates the default Image
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- */
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- defaultImage = new BufferedImage(30,30,BufferedImage.TYPE_BYTE_INDEXED);
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- for(int x = 0; x < 30; x++)
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- for(int y = 0; y < 30; y++){
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- if(x == 29 || y == 29)
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- //Border Bottom/Left -> Light Grey
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- (defaultImage).setRGB(x, y, 13158600);
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- else if(x == 0 || y == 0)
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- //Border Top/Right -> Dark Grey
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- (defaultImage).setRGB(x, y, 6316128);
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- else if((x == y || x == 31 - y) && 6 < x && x < 25)
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- //Red Cross in the middle
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- (defaultImage).setRGB(x, y, 13107200);
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- else //all other Pixels are white
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- (defaultImage).setRGB(x, y, 16777215);
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- }
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- imgStorage=new HashMap<String, Image>();
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+ private static ImageImport xmp = new ImageImport();// Used to load resources from the JAR.
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+
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+ static {
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+ imgStorage = new HashMap<String, Image>();
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}
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-
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+
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/**
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* The rawest function replacing the old method without any default parameters.
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- * Currently not used in HOLEG at all(aside form calls from the convenience methods).
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- * @param url Path to the image to be loaded.
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- * @param w Width the loaded image should be scaled to.
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- * @param h Height the loaded image should be scaled to.
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- * @param hints Hints for the scaling algorithm to be used.
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- * Same as the parameter in the getScaledInstance function of Image.
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+ * Currently not used in HOLEG at all(aside form calls from the convenience
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+ * methods).
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+ *
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+ * @param url Path to the image to be loaded.
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+ * @param w Width the loaded image should be scaled to.
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+ * @param h Height the loaded image should be scaled to.
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+ * @param hints Hints for the scaling algorithm to be used. Same as the
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+ * parameter in the getScaledInstance function of Image.
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* @return A loaded and scaled image from the requested path.
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*/
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- static Image loadImage(String url, int w, int h, int hints){
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+ static Image loadImage(String url, int w, int h, int hints) {
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String key = url + "?" + w + "?" + h + "?" + hints;
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if (imgStorage.containsKey(key))
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return (imgStorage.get(key));
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@@ -74,26 +52,28 @@ public class ImageImport {
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return img;
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}
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}
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-
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+
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/**
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* Loads an image from the given path and scales it using the smooth algorithm.
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+ *
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* @param url Path to the image to be loaded.
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- * @param w Width the loaded image should be scaled to.
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- * @param h Height the loaded image should be scaled to.
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+ * @param w Width the loaded image should be scaled to.
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+ * @param h Height the loaded image should be scaled to.
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* @return A loaded and (smoothly) scaled image from the requested path.
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*/
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- public static Image loadImage(String url, int w, int h){
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- return loadImage(url,w,h, Image.SCALE_SMOOTH);
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+ public static Image loadImage(String url, int w, int h) {
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+ return loadImage(url, w, h, Image.SCALE_SMOOTH);
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}
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-
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+
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/**
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* Loads an image from the given path and scales it using the smooth algorithm.
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+ *
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* @param url Path to the image to be loaded.
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- * @param w Width the loaded image should be scaled to.
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- * @param h Height the loaded image should be scaled to.
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+ * @param w Width the loaded image should be scaled to.
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+ * @param h Height the loaded image should be scaled to.
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* @return An image loaded from the requested path.
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*/
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- public static Image loadImage(String url){
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+ public static Image loadImage(String url) {
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if (imgStorage.containsKey(url))
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return imgStorage.get(url);
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else {
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@@ -101,41 +81,48 @@ public class ImageImport {
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try {
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img = ImageIO.read(loadStream(url));
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} catch (IOException e) {
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- e.printStackTrace();
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- return defaultImage;
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+ System.err.println(e);
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+ return null;
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}
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imgStorage.put(url, img);
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return img;
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}
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}
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-
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+
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/**
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- * Loads any resource with a given path,
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- * regardless of whether it is inside the jar or an external resource.
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- * Every loadImage() function uses this as a basis.
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+ * Loads any resource with a given path, regardless of whether it is inside the
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+ * jar or an external resource. Every loadImage() function uses this as a basis.
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+ *
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* @param url The path (and file name) of the requested resource.
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* @return An InputStream from the requested resource.
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+ * @throws FileNotFoundException
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*/
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- public static InputStream loadStream(String url){
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- InputStream o=xmp.getClass().getResourceAsStream(url);
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- if(o!=null)return o;
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- else{
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- boolean rootSymbol=false; //Whether url starts with a / or \
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- switch(url.charAt(0)){ //So we can make sure to construct res/path correctly.
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- case '/':case '\\':rootSymbol=true;
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+ public static InputStream loadStream(String url) throws FileNotFoundException {
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+ InputStream o = xmp.getClass().getResourceAsStream(url);
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+ if (o != null)
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+ return o;
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+ else {
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+ boolean rootSymbol = false; // Whether url starts with a / or \
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+ switch (url.charAt(0)) { // So we can make sure to construct res/path correctly.
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+ case '/':
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+ case '\\':
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+ rootSymbol = true;
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}
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- try {
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- //Mixed separators might cause problems. Will fix later.
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- File f=new File(url);//Possible bug with duplicate names.
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- if(!f.exists())url="res"+(rootSymbol?"":"/")+url;
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- return new FileInputStream(url);
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- } catch (FileNotFoundException e1) {
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- e1.printStackTrace();
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+ File f = new File(url);
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+ if (!f.exists()) {
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+ url = "res" + (rootSymbol ? "" : "/") + url;
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+ }
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+ f = new File(url);// Possible bug with duplicate names.
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+ if (!f.exists()) {
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+ url = "res/Images/image_not_found.png";
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}
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- return null;
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+ return new FileInputStream(url);
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+
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}
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}
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-
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- //Nobody needs an instance of this. I do, because I use it to load images from inside the JAR.
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- private ImageImport(){}
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+
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+ // Nobody needs an instance of this. I do, because I use it to load images from
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+ // inside the JAR.
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+ private ImageImport() {
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+ }
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}
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