// Assumption: alGamesInfo is set to a valid object and noOfGames = alGamesInfo.size().
public void setSelectedGameIndex(int newGameIndex) {
if ((newGameIndex < 1) || (newGameIndex > noOfGames - 2))
// => Invalid game index passed.
selGameIndex = 1; // reset
else selGameIndex = newGameIndex;
// FIXME: Handle case when alGamesInfo.get(%index%).getLogo() = null (when %id%.png is absent)
// Create top blurred image.
BufferedImage biTemp = alGamesInfo.get(selGameIndex - 1).getLogo();
biTopBlurred =
UIHelpers.EmptyCompatibleImage(
biTemp.getWidth(), biTemp.getHeight(), biTemp.getColorModel().getTransparency());
blurOp.filter(biTemp, biTopBlurred);
biTopBlurred = blurOp.filter(biTopBlurred, null);
biTopBlurred = blurOp.filter(biTopBlurred, null);
// Create bottom blurred image.
// TODO: NULL pointer exception occurs here is there are no
// logo and screenshot images available for a game
biTemp = alGamesInfo.get(selGameIndex + 1).getLogo();
biBottomBlurred =
UIHelpers.EmptyCompatibleImage(
biTemp.getWidth(), biTemp.getHeight(), biTemp.getColorModel().getTransparency());
blurOp.filter(biTemp, biBottomBlurred);
biBottomBlurred = blurOp.filter(biBottomBlurred, null);
biBottomBlurred = blurOp.filter(biBottomBlurred, null);
}
/** @see Graphics2D#drawImage(BufferedImage, BufferedImageOp, int, int) */
public void drawImage(BufferedImage img, BufferedImageOp op, int x, int y) {
BufferedImage result = img;
if (op != null) {
result = op.createCompatibleDestImage(img, img.getColorModel());
result = op.filter(img, result);
}
drawImage(result, x, y, null);
}
/**
* Transformation d'une BufferedImage en utilisant la classe ConvolveOp On applique a l'image une
* matrice de convolution Flou, contrast, netteté, detection de contour, binarisation, posteriser
* Ces fonctions ne sont plus utilisés durant le traitement
*/
public static BufferedImage blur(BufferedImage bi, int n) {
int n2 = n * n;
float coef = 1.0f / n2;
float[] kernel = new float[n2];
for (int i = 0; i < n2; i++) kernel[i] = coef;
BufferedImageOp blurOp = new ConvolveOp(new Kernel(n, n, kernel));
return blurOp.filter(bi, null);
}
protected static BufferedImage rotateImage(BufferedImage original, float degrees) {
if (degrees == 0.0f) {
return original;
} else {
AffineTransform at = new AffineTransform();
at.rotate(Math.toRadians(degrees), original.getWidth() / 2.0f, original.getHeight() / 2.0f);
BufferedImageOp op = new AffineTransformOp(at, AffineTransformOp.TYPE_BICUBIC);
return op.filter(original, null);
}
}
/**
* @param image
* @return
*/
public static BufferedImage blur(final BufferedImage image) {
final float[] matrix = new float[400];
for (int i = 0; i < 400; i++) {
matrix[i] = 1.0f / 400.0f;
}
final BufferedImageOp op =
new ConvolveOp(new Kernel(20, 20, matrix), ConvolveOp.EDGE_NO_OP, null);
return op.filter(image, null);
}
// valeur possible pour threshold = [0, 255] exemple : 64, 128,192
public static BufferedImage threshold(BufferedImage bi, int threshold) {
int minimum = 0;
int maximum = 255;
short[] thresholdArray = new short[256];
for (int i = 0; i < 256; i++) {
if (i < threshold) thresholdArray[i] = (short) minimum;
else thresholdArray[i] = (short) maximum;
}
BufferedImageOp thresholdOp = new LookupOp(new ShortLookupTable(0, thresholdArray), null);
return thresholdOp.filter(bi, null);
}
public BufferedImage sharpenImage(BufferedImage img) {
if (sharpenLevel <= 0) return img;
int width = img.getWidth(null);
int height = img.getHeight(null);
BufferedImage tmp = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
tmp.getGraphics().drawImage(img, 0, 0, null);
Kernel kernel;
if (sharpenLevel == 1) {
kernel =
new Kernel(
3, 3, new float[] {-0.25f, -0.5f, -0.25f, -0.5f, 4, -0.5f, -0.25f, -0.5f, -0.25f});
} else {
kernel = new Kernel(3, 3, new float[] {-0.5f, -1, -0.5f, -1, 7, -1, -0.5f, -1, -0.5f});
}
BufferedImageOp op = new ConvolveOp(kernel, ConvolveOp.EDGE_NO_OP, null);
return op.filter(tmp, null);
}
/**
* Blurs the image.
*
* @param bi The BufferedImage on which the blur effect is done.
* @return BufferedImage The manipuated image
*/
public static BufferedImage blur(BufferedImage bi) {
int xSize = bi.getWidth();
int ySize = bi.getHeight();
BufferedImage newBi = new BufferedImage(xSize, ySize, 3);
float[] matrix = {
0.111f, 0.111f, 0.111f,
0.111f, 0.111f, 0.111f,
0.111f, 0.111f, 0.111f,
};
BufferedImageOp op = new ConvolveOp(new Kernel(3, 3, matrix));
bi = op.filter(bi, newBi);
addImage(bi);
return newBi;
}
public static BufferedImage blurImage(BufferedImage image) {
float ninth = 1.0f / 9.0f;
float[] blurKernel = {
ninth, ninth, ninth,
ninth, ninth, ninth,
ninth, ninth, ninth
};
HashMap<Key, Object> map = new HashMap<Key, Object>();
map.put(RenderingHints.KEY_INTERPOLATION, RenderingHints.VALUE_INTERPOLATION_BILINEAR);
map.put(RenderingHints.KEY_RENDERING, RenderingHints.VALUE_RENDER_QUALITY);
map.put(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
RenderingHints hints = new RenderingHints(map);
BufferedImageOp op = new ConvolveOp(new Kernel(3, 3, blurKernel), ConvolveOp.EDGE_NO_OP, hints);
return op.filter(image, null);
}
public void transformImage(
SunGraphics2D sg, BufferedImage img, BufferedImageOp op, int x, int y) {
if (op != null) {
if (op instanceof AffineTransformOp) {
AffineTransformOp atop = (AffineTransformOp) op;
transformImage(sg, img, x, y, atop.getTransform(), atop.getInterpolationType());
return;
} else {
img = op.filter(img, null);
}
}
copyImage(sg, img, x, y, null);
}
/**
* Draws the image resulting from applying the {@code BufferedImageOp} to the specified image at
* the location {@code (x, y)}.
*
* @param img the image.
* @param op the operation.
* @param x the x-coordinate.
* @param y the y-coordinate.
*/
@Override
public void drawImage(BufferedImage img, BufferedImageOp op, int x, int y) {
BufferedImage imageToDraw = op.filter(img, null);
drawImage(imageToDraw, new AffineTransform(1f, 0f, 0f, 1f, x, y), null);
}
public void drawImage(BufferedImage img, BufferedImageOp op, int x, int y) {
drawImage(op.filter(img, null), x, y, null);
}
/**
* Apply a filter and repaint.
*
* @param op the image operation to apply
*/
private void filter(BufferedImageOp op) {
if (image == null) return;
image = op.filter(image, null);
repaint();
}
/**
* Converts a {@link BufferedImage} object into a gray scale image using the available filters in
* Java.
*
* @param src The {@link BufferedImage} to be converted.
* @return a {@link BufferedImage} which is converted in gray scale.
*/
private static BufferedImage convertToGrayscale(BufferedImage src) {
ColorSpace cs = ColorSpace.getInstance(ColorSpace.CS_GRAY);
BufferedImageOp op = new ColorConvertOp(cs, null);
BufferedImage grayImg = op.filter(src, null);
return grayImg;
}
public static BufferedImage posterize(BufferedImage bi) {
short[] post = new short[256];
for (int i = 0; i < 256; i++) post[i] = (short) (i - (i % 32));
BufferedImageOp posterizeOp = new LookupOp(new ShortLookupTable(0, post), null);
return posterizeOp.filter(bi, null);
}
public static BufferedImage contrast(BufferedImage bi) {
float coef = 0.165f;
float[] kernel = {coef, coef, coef, coef, coef, coef, coef, coef, coef};
BufferedImageOp blurOp = new ConvolveOp(new Kernel(3, 3, kernel));
return blurOp.filter(bi, null);
}
