/**
* Creates an immutable image using pixel data from the specified region of a source image,
* transformed as specified.
*
* <p>The source image may be mutable or immutable. For immutable source images, transparency
* information, if any, is copied to the new image unchanged.
*
* <p>On some devices, pre-transformed images may render more quickly than images that are
* transformed on the fly using <code>drawRegion</code>. However, creating such images does
* consume additional heap space, so this technique should be applied only to images whose
* rendering speed is critical.
*
* <p>The transform function used must be one of the following, as defined in the {@link
* javax.microedition.lcdui.game.Sprite Sprite} class:<br>
* <code>Sprite.TRANS_NONE</code> - causes the specified image region to be copied unchanged<br>
* <code>Sprite.TRANS_ROT90</code> - causes the specified image region to be rotated clockwise by
* 90 degrees.<br>
* <code>Sprite.TRANS_ROT180</code> - causes the specified image region to be rotated clockwise by
* 180 degrees.<br>
* <code>Sprite.TRANS_ROT270</code> - causes the specified image region to be rotated clockwise by
* 270 degrees.<br>
* <code>Sprite.TRANS_MIRROR</code> - causes the specified image region to be reflected about its
* vertical center.<br>
* <code>Sprite.TRANS_MIRROR_ROT90</code> - causes the specified image region to be reflected
* about its vertical center and then rotated clockwise by 90 degrees.<br>
* <code>Sprite.TRANS_MIRROR_ROT180</code> - causes the specified image region to be reflected
* about its vertical center and then rotated clockwise by 180 degrees.<br>
* <code>Sprite.TRANS_MIRROR_ROT270</code> - causes the specified image region to be reflected
* about its vertical center and then rotated clockwise by 270 degrees.<br>
*
* <p>The size of the returned image will be the size of the specified region with the transform
* applied. For example, if the region is <code>100 x 50</code> pixels and the transform
* is <code>TRANS_ROT90</code>, the returned image will be <code>50 x 100</code> pixels.
*
* <p><strong>Note:</strong> If all of the following conditions are met, this method may simply
* return the source <code>Image</code> without creating a new one:
*
* <ul>
* <li>the source image is immutable;
* <li>the region represents the entire source image; and
* <li>the transform is <code>TRANS_NONE</code>.
* </ul>
*
* @param dataSource the source image data to be copied from
* @param x the horizontal location of the region to be copied
* @param y the vertical location of the region to be copied
* @param width the width of the region to be copied
* @param height the height of the region to be copied
* @param transform the transform to be applied to the region
* @return the new immutable image data
*/
public ImageData createImmutableImageData(
ImageData dataSource, int x, int y, int width, int height, int transform) {
ImageData dataDest;
if ((transform & Image.TRANSFORM_SWAP_AXIS) != 0x0) {
dataDest = new ImageData(height, width, false);
} else {
dataDest = new ImageData(width, height, false);
}
// Copy native data from the source region
try {
createImmutableImageDataRegion(
dataDest, dataSource, x, y, width, height, transform, dataSource.isMutable());
} catch (OutOfMemoryError e) {
garbageCollectImages(false);
try {
createImmutableImageDataRegion(
dataDest, dataSource, x, y, width, height, transform, dataSource.isMutable());
} catch (OutOfMemoryError e2) {
garbageCollectImages(true);
createImmutableImageDataRegion(
dataDest, dataSource, x, y, width, height, transform, dataSource.isMutable());
}
}
return dataDest;
}
/** Loads the resources */
void initResources() {
final Class<ControlExample> clazz = ControlExample.class;
if (resourceBundle != null) {
try {
if (images == null) {
images = new Image[imageLocations.length];
for (int i = 0; i < imageLocations.length; ++i) {
InputStream sourceStream = clazz.getResourceAsStream(imageLocations[i]);
ImageData source = new ImageData(sourceStream);
if (imageTypes[i] == SWT.ICON) {
ImageData mask = source.getTransparencyMask();
images[i] = new Image(null, source, mask);
} else {
images[i] = new Image(null, source);
}
try {
sourceStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
return;
} catch (Throwable t) {
}
}
String error =
(resourceBundle != null)
? getResourceString("error.CouldNotLoadResources")
: "Unable to load resources"; //$NON-NLS-1$
freeResources();
throw new RuntimeException(error);
}
public static void preprocess(Map<String, ImageData> images) throws IOException {
File cacheFile = new File(colorHistCacheFile);
if (cacheFile.exists()) {
try (BufferedReader br = new BufferedReader(new FileReader(colorHistCacheFile))) {
String line = br.readLine();
while (line != null) {
double[] bins = new double[dim * dim * dim];
String key = line.substring(0, line.indexOf(" "));
String values = line.substring(line.indexOf("[") + 1, line.indexOf("]"));
String binS[] = values.split(",\\s");
for (int i = 0; i < binS.length; i++) {
bins[i] = Double.parseDouble(binS[i]);
}
images.get(key).setColorHistogram(bins);
line = br.readLine();
}
} catch (IOException e) {
e.printStackTrace();
}
} else {
try (BufferedWriter bw = new BufferedWriter(new FileWriter(colorHistCacheFile))) {
for (ImageData id : images.values()) {
double[] colorHistogram = getHist(id);
id.setColorHistogram(colorHistogram);
String line = String.format("%s %s%n", id.getFilename(), Arrays.toString(colorHistogram));
bw.write(line);
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
public static BufferedImage convertImageData(ImageData data) {
BufferedImage bimg = null;
int height = data.getHeight(), width = data.getWidth();
Object pixels = data.getData();
if (pixels instanceof int[] && data.getElementWidth() == 1) {
int[] arr = (int[]) pixels;
byte[] barray = new byte[arr.length * 3];
int k = 0;
for (int j = 0; j < arr.length; j++) {
int l = arr[j];
barray[k++] = (byte) (l & 0xFF);
barray[k++] = (byte) ((l >>> 8) & 0xFF);
barray[k++] = (byte) ((l >>> 16) & 0xFF);
}
ColorModel ccm =
new ComponentColorModel(
ICC_ColorSpace.getInstance(ICC_ColorSpace.CS_sRGB),
new int[] {8, 8, 8},
false,
false,
Transparency.OPAQUE,
DataBuffer.TYPE_BYTE);
DataBuffer bbuf = new DataBufferByte(barray, barray.length);
SampleModel bmodel =
new PixelInterleavedSampleModel(
DataBuffer.TYPE_BYTE, width, height, 3, 3 * width, new int[] {2, 1, 0});
WritableRaster raster = Raster.createWritableRaster(bmodel, bbuf, new Point(0, 0));
bimg = new BufferedImage(ccm, raster, false, new Hashtable());
} else if (pixels instanceof byte[]
&& data.getElementWidth() == 1) { // Assume gray scale model?
byte[] arr = (byte[]) pixels;
byte[] barray = new byte[arr.length * 3];
int k = 0;
for (int j = 0; j < arr.length; j++) {
byte l = arr[j];
barray[k++] = l;
barray[k++] = l;
barray[k++] = l;
}
ColorModel ccm =
new ComponentColorModel(
ICC_ColorSpace.getInstance(ICC_ColorSpace.CS_sRGB),
new int[] {8, 8, 8},
false,
false,
Transparency.OPAQUE,
DataBuffer.TYPE_BYTE);
DataBuffer bbuf = new DataBufferByte(barray, barray.length);
SampleModel bmodel =
new PixelInterleavedSampleModel(
DataBuffer.TYPE_BYTE, width, height, 3, 3 * width, new int[] {2, 1, 0});
WritableRaster raster = Raster.createWritableRaster(bmodel, bbuf, new Point(0, 0));
bimg = new BufferedImage(ccm, raster, false, new Hashtable());
} else {
throw new RuntimeException("Unexpected data.");
}
return bimg;
}
protected void findImages(boolean internal, int howMany, LinkedList<ImageData> foundImages) {
Uri uri =
internal
? MediaStore.Images.Media.INTERNAL_CONTENT_URI
: MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
String[] projection = {
MediaStore.Images.Media.DATA,
MediaStore.Images.Media.ORIENTATION,
MediaStore.Images.Media.BUCKET_ID,
MediaStore.Images.Media.BUCKET_DISPLAY_NAME
};
String selection = "";
for (String id : getFoundAlbums()) {
if (isInternalId(id) == internal && mSettings.isAlbumEnabled(id)) {
String[] parts = id.split(":");
if (parts.length > 1) {
if (selection.length() > 0) {
selection += " OR ";
}
selection += MediaStore.Images.Media.BUCKET_ID + " = '" + parts[1] + "'";
}
}
}
if (selection.isEmpty()) {
return;
}
Cursor cursor = mResolver.query(uri, projection, selection, null, null);
if (cursor != null) {
int dataIndex = cursor.getColumnIndex(MediaStore.Images.Media.DATA);
if (cursor.getCount() > howMany && mLastPosition == INVALID) {
mLastPosition = pickRandomStart(cursor.getCount(), howMany);
}
cursor.moveToPosition(mLastPosition);
if (dataIndex < 0) {
log(TAG, "can't find the DATA column!");
} else {
while (foundImages.size() < howMany && cursor.moveToNext()) {
ImageData data = unpackImageData(cursor, null);
data.uri = uri;
foundImages.offer(data);
mLastPosition = cursor.getPosition();
}
if (cursor.isAfterLast()) {
mLastPosition = -1;
}
if (cursor.isBeforeFirst()) {
mLastPosition = INVALID;
}
}
cursor.close();
}
}
/**
* Returns an {@link Image} encoded by the specified {@link InputStream}.
*
* @param stream the {@link InputStream} encoding the image data
* @return the {@link Image} encoded by the specified input stream
*/
protected static Image getImage(InputStream stream) throws IOException {
try {
Display display = Display.getCurrent();
ImageData data = new ImageData(stream);
if (data.transparentPixel > 0) {
return new Image(display, data, data.getTransparencyMask());
}
return new Image(display, data);
} finally {
stream.close();
}
}
public void testModifyData() throws Exception {
ImageData originalData = getImageData(Fixture.IMAGE1);
Image image = ResourceFactory.findImage(originalData);
cache.putImageData(image, originalData);
ImageData copyData1 = cache.getImageData(image);
assertNotSame(originalData, copyData1);
assertEqualsImageData(originalData, copyData1);
// modify original data
originalData.setPixel(0, 0, 23);
ImageData copyData2 = cache.getImageData(image);
assertNotSame(copyData1, copyData2);
assertEqualsImageData(copyData1, copyData2);
}
/**
* Select the image data from the database
*
* @param imageName the name of the image
* @return <code>null</code> if no data was found
* @throws Exception
*/
public ImageData selectImage(String imageName) throws Exception {
ImageData imageData = new ImageData(imageName);
fSelectImage.setString(1, imageName);
ResultSet resultSet = fSelectImage.executeQuery();
try {
while (resultSet.next()) {
imageData.setUrl(resultSet.getString(1));
imageData.setFilename(resultSet.getString(2));
return imageData;
}
} finally {
resultSet.close();
}
return null;
}
/**
* Run the ImageData getThumbnail() method test.
*
* @throws Exception
*/
@Test
public void testGetThumbnail() throws Exception {
Images fixture = new Images();
fixture.setThumbnail(new ImageData());
fixture.setLowResolution(new ImageData());
fixture.setStandardResolution(new ImageData());
ImageData result = fixture.getThumbnail();
// add additional test code here
assertNotNull(result);
assertEquals("ImageData [imageHeight=0, imageUrl=null, imageWidth=0]", result.toString());
assertEquals(null, result.getImageUrl());
assertEquals(0, result.getImageHeight());
assertEquals(0, result.getImageWidth());
}
private static double[] getHist(ImageData queryImage) throws IOException {
BufferedImage image = queryImage.getImage();
int imHeight = image.getHeight();
int imWidth = image.getWidth();
double[] bins = new double[dim * dim * dim];
int step = 256 / dim;
Raster raster = image.getRaster();
for (int i = 0; i < imWidth; i++) {
for (int j = 0; j < imHeight; j++) {
// rgb->ycrcb
int r = raster.getSample(i, j, 0);
int g = raster.getSample(i, j, 1);
int b = raster.getSample(i, j, 2);
// Changed Codes.
int y = (int) (0 + 0.299 * r + 0.587 * g + 0.114 * b);
int cb = (int) (128 - 0.16874 * r - 0.33126 * g + 0.50000 * b);
int cr = (int) (128 + 0.50000 * r - 0.41869 * g - 0.08131 * b);
int ybin = y / step;
int cbbin = cb / step;
int crbin = cr / step;
// Changed Codes.
bins[ybin * dim * dim + cbbin * dim + crbin]++;
}
}
// Changed Codes.
for (int i = 0; i < dim * dim * dim; i++) {
bins[i] = bins[i] / (imHeight * imWidth);
}
return bins;
}
public ImagePanel(ImageData aThumbnail) {
itsThumbnail = aThumbnail;
setLayout(new BorderLayout());
add(new JLabel(aThumbnail != null ? aThumbnail.getName() : ""), BorderLayout.NORTH);
add(new ThumbnailPanel(itsThumbnail), BorderLayout.CENTER);
}
@Override
protected ImageData unpackImageData(Cursor cursor, ImageData data) {
if (data == null) {
data = new ImageData();
}
int dataIndex = cursor.getColumnIndex(MediaStore.Images.Media.DATA);
int orientationIndex = cursor.getColumnIndex(MediaStore.Images.Media.ORIENTATION);
int bucketIndex = cursor.getColumnIndex(MediaStore.Images.Media.BUCKET_ID);
data.url = cursor.getString(dataIndex);
data.albumId = cursor.getString(bucketIndex);
data.position = UNINITIALIZED;
data.cursor = null;
data.orientation = cursor.getInt(orientationIndex);
return data;
}
public void updateVertex(
final Dimension size, final Insets margin, final Insets border, final Insets padding) {
this.m_entity.setVisible(true);
this.m_entity3D.setVisible(true);
this.m_particleEntity.setVisible(true);
final int left = margin.left + border.left + padding.left;
final int bottom = margin.bottom + border.bottom + padding.bottom;
this.m_entity.getTransformer().setTranslation(0, this.m_x, this.m_y);
if (this.m_modulationColor != null) {
this.m_entity3D.setColor(
this.m_modulationColor.getRed(),
this.m_modulationColor.getGreen(),
this.m_modulationColor.getBlue(),
this.m_modulationColor.getAlpha());
for (int i = 0, isize = this.m_textDataList.size(); i < isize; ++i) {
this.m_textDataList
.get(i)
.getParticle()
.setGlobalColor(
this.m_modulationColor.getRed() * this.m_modulationColor.getAlpha(),
this.m_modulationColor.getGreen() * this.m_modulationColor.getAlpha(),
this.m_modulationColor.getBlue() * this.m_modulationColor.getAlpha(),
this.m_modulationColor.getAlpha());
}
} else {
this.m_entity3D.setColor(1.0f, 1.0f, 1.0f, 1.0f);
for (int i = 0, isize = this.m_textDataList.size(); i < isize; ++i) {
this.m_textDataList.get(i).getParticle().setGlobalColor(1.0f, 1.0f, 1.0f, 1.0f);
}
}
for (int i = 0, listSize = this.m_imageDataList.size(); i < listSize; ++i) {
final ImageData imageData = this.m_imageDataList.get(i);
final int x = imageData.getX() * this.m_chunkWidth + left;
final int y = imageData.getY() * this.m_chunkHeight + bottom + size.height;
final GeometrySprite geometry = (GeometrySprite) this.m_entity3D.getGeometry(i);
geometry.setTopLeft(y, x);
}
for (int i = 0, listSize = this.m_textDataList.size(); i < listSize; ++i) {
final TextData textData = this.m_textDataList.get(i);
final GeometryMesh geom =
(GeometryMesh) this.m_entity3D.getGeometry(i + this.m_imageDataList.size());
this.setTextGeometryPosition(geom.getVertexBuffer(), textData);
}
}
private void addGeometry(final ImageData data) {
final GeometrySprite geom =
((MemoryObject.ObjectFactory<GeometrySprite>) GLGeometrySprite.Factory).newPooledInstance();
final Pixmap pixmap = data.getPixmap();
geom.setTextureCoordinates(
pixmap.getTop(), pixmap.getLeft(), pixmap.getBottom(), pixmap.getRight());
geom.setSize(pixmap.getWidth(), pixmap.getHeight());
this.m_entity3D.addTexturedGeometry(geom, pixmap.getTexture(), null);
geom.removeReference();
}
/**
* Creates an immutable image from a source mutable image.
*
* <p>This method is useful for placing the contents of mutable images into <code>Choice</code>
* objects. The application can create an off-screen image using the {@link #createImage(int, int)
* createImage(w, h)} method, draw into it using a <code>Graphics</code> object obtained with the
* {@link #getGraphics() getGraphics()} method, and then create an immutable copy of it with this
* method. The immutable copy may then be placed into <code>Choice</code> objects.
*
* @param mutableSource the source mutable image to be copied
* @return the new immutable image
*/
public ImageData createImmutableCopy(ImageData mutableSource) {
ImageData data = new ImageData(mutableSource.getWidth(), mutableSource.getHeight(), false);
// Duplicate mutable image contents
try {
createImmutableImageDataCopy(data, mutableSource);
} catch (OutOfMemoryError e) {
garbageCollectImages(false);
try {
createImmutableImageDataCopy(data, mutableSource);
} catch (OutOfMemoryError e2) {
garbageCollectImages(true);
createImmutableImageDataCopy(data, mutableSource);
}
}
return data;
}
protected ImageData getImageData(Object image) {
ImageData imageData = new ImageData();
if (image instanceof ImageResource) {
ImageResource imageResource = (ImageResource) image;
imageData.height = imageResource.getHeight();
imageData.width = imageResource.getWidth();
} else if (image instanceof ComposedImage) {
ComposedImage composedImage = (ComposedImage) image;
List<ComposedImage.Size> sizes = new ArrayList<ComposedImage.Size>();
List<Object> images = new ArrayList<Object>(composedImage.getImages());
List<ImageData> nestedImagesData = new ArrayList<ImageData>();
for (Object nestedImage : images) {
ImageData nestedImageData = getImageData(nestedImage);
ComposedImage.Size size = new ComposedImage.Size();
size.height = nestedImageData.height;
size.width = nestedImageData.width;
sizes.add(size);
nestedImagesData.add(nestedImageData);
}
}
return imageData;
}
@Override
protected void findPosition(ImageData data) {
if (data.position == -1) {
if (data.cursor == null) {
openCursor(data);
}
if (data.cursor != null) {
int dataIndex = data.cursor.getColumnIndex(MediaStore.Images.Media.DATA);
data.cursor.moveToPosition(-1);
while (data.position == -1 && data.cursor.moveToNext()) {
String url = data.cursor.getString(dataIndex);
if (url != null && url.equals(data.url)) {
data.position = data.cursor.getPosition();
}
}
if (data.position == -1) {
// oops! The image isn't in this album. How did we get here?
data.position = INVALID;
}
}
}
}
public void parse() {
try {
// parsing all images and populating imageData object
for (int i = 0; i < images.length(); i++) {
JSONObject jsonObject = images.getJSONObject(i);
String imageUrlThumbnail =
jsonObject.getJSONObject(TAG_IMAGES).getJSONObject(TAG_THUMBNAIL).getString(TAG_URL);
if (imageData.isInCache(imageUrlThumbnail)) continue;
String imageUrlStdRes =
jsonObject
.getJSONObject(TAG_IMAGES)
.getJSONObject(TAG_STD_RESOLUTION)
.getString(TAG_URL);
String caption = jsonObject.getJSONObject(TAG_CAPTION).getString(TAG_TEXT);
JSONObject user = jsonObject.getJSONObject(TAG_USER);
String username = user.getString(TAG_USERNAME);
String full_name = user.getString(TAG_FULL_NAME);
// tmp hashmap for single image
ConcurrentHashMap<String, String> image = new ConcurrentHashMap<>();
// adding each child node to HashMap
image.put(TAG_USERNAME, username);
image.put(TAG_FULL_NAME, full_name);
image.put(TAG_CAPTION, caption);
image.put(TAG_LINK_THUMB, imageUrlThumbnail);
image.put(TAG_LINK_STD_RES, imageUrlStdRes);
imageData.addImageData(image);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
@Override
protected void openCursor(ImageData data) {
log(TAG, "opening single album");
String[] projection = {
MediaStore.Images.Media.DATA,
MediaStore.Images.Media.ORIENTATION,
MediaStore.Images.Media.BUCKET_ID,
MediaStore.Images.Media.BUCKET_DISPLAY_NAME
};
String selection = MediaStore.Images.Media.BUCKET_ID + " = '" + data.albumId + "'";
data.cursor = mResolver.query(data.uri, projection, selection, null, null);
}
@Override
protected void paintComponent(Graphics aG) {
super.paintComponent(aG);
itsThumbnail.paintThumbnail(aG);
}
public String type() {
return ImageData.ice_staticId();
}
@Override
public Image run(Image input, int imageType) {
ImageData inData = input.getImageData(); // Die echten Bilddaten sind hier drin
// RGB zu YUV Umwandlungsmatrix
// double[] linear_conversion = {
// 0.2126, 0.7152, 0.0722,
// -0.09991, -0.33609, 0.436,
// 0.615, -0.55861, -0.05639
// };
double[] linear_conversion = {0.299, 0.587, 0.114, -0.147, -0.289, 0.436, 0.615, -0.515, -0.1};
Matrix m = new Matrix(3, 3, linear_conversion);
// YUV zu RGB Umwandlungmatrix (das Inverse)
// double[] inv_linear_conversion = {
// 1.0000, 0.0000, 1.28033,
// 1.0000, -0.21482, -0.38059,
// 1.0000, 2.12798, -0.0005
// };
double[] inv_linear_conversion = {
1.0000, 0.0000, 1.1398, 1.0000, -0.3946, -0.5805, 1.0000, 2.0320, -0.0005
};
Matrix minv = new Matrix(3, 3, inv_linear_conversion);
for (int v = 0; v < inData.height; v++) {
for (int u = 0; u < inData.width; u++) {
int pixel = inData.getPixel(u, v);
RGB rgb = inData.palette.getRGB(pixel);
// Variante mit Farbwerte U und V von YUV auf 0 setzen
Vector r = new Vector(rgb.red, rgb.green, rgb.blue);
double[] y = m.times(r).getV();
y[2] = 0;
y[1] = 0;
r = minv.times(new Vector(y));
rgb.red = (int) r.x(1);
rgb.green = (int) r.x(2);
rgb.blue = (int) r.x(3);
if (rgb.red < 0) rgb.red = 0;
else if (rgb.red > 255) rgb.red = 255;
if (rgb.green < 0) rgb.green = 0;
else if (rgb.green > 255) rgb.green = 255;
if (rgb.blue < 0) rgb.blue = 0;
else if (rgb.blue > 255) rgb.blue = 255;
// Variante mit der Sättigung auf 0 gesetzt (schlechter)
// float[] hsb = inData.palette.getRGB(pixel).getHSB();
//
// hsb[1] = 0; //Sättigung auf 0 setzen
//
// Color c = new Color(Color.HSBtoRGB(hsb[0],hsb[1],hsb[2]));
// RGB rgb = new RGB(0,0,0);
// rgb.red = c.getRed();
// rgb.green = c.getGreen();
// rgb.blue = c.getBlue();
inData.setPixel(u, v, inData.palette.getPixel(rgb));
}
}
return new Image(input.getDevice(), inData);
}
@Override
ImageData[] loadFromByteStream() {
int[] fileHeader = loadFileHeader();
byte[] infoHeader = new byte[BMPHeaderFixedSize];
try {
inputStream.read(infoHeader);
} catch (Exception e) {
SWT.error(SWT.ERROR_IO, e);
}
int width =
(infoHeader[4] & 0xFF)
| ((infoHeader[5] & 0xFF) << 8)
| ((infoHeader[6] & 0xFF) << 16)
| ((infoHeader[7] & 0xFF) << 24);
int height =
(infoHeader[8] & 0xFF)
| ((infoHeader[9] & 0xFF) << 8)
| ((infoHeader[10] & 0xFF) << 16)
| ((infoHeader[11] & 0xFF) << 24);
if (height < 0) height = -height;
int bitCount = (infoHeader[14] & 0xFF) | ((infoHeader[15] & 0xFF) << 8);
this.compression =
(infoHeader[16] & 0xFF)
| ((infoHeader[17] & 0xFF) << 8)
| ((infoHeader[18] & 0xFF) << 16)
| ((infoHeader[19] & 0xFF) << 24);
PaletteData palette = loadPalette(infoHeader);
if (inputStream.getPosition() < fileHeader[4]) {
// Seek to the specified offset
try {
inputStream.skip(fileHeader[4] - inputStream.getPosition());
} catch (IOException e) {
SWT.error(SWT.ERROR_IO, e);
}
}
byte[] data = loadData(infoHeader);
this.importantColors =
(infoHeader[36] & 0xFF)
| ((infoHeader[37] & 0xFF) << 8)
| ((infoHeader[38] & 0xFF) << 16)
| ((infoHeader[39] & 0xFF) << 24);
int xPelsPerMeter =
(infoHeader[24] & 0xFF)
| ((infoHeader[25] & 0xFF) << 8)
| ((infoHeader[26] & 0xFF) << 16)
| ((infoHeader[27] & 0xFF) << 24);
int yPelsPerMeter =
(infoHeader[28] & 0xFF)
| ((infoHeader[29] & 0xFF) << 8)
| ((infoHeader[30] & 0xFF) << 16)
| ((infoHeader[31] & 0xFF) << 24);
this.pelsPerMeter = new Point(xPelsPerMeter, yPelsPerMeter);
int type =
(this.compression == 1 /*BMP_RLE8_COMPRESSION*/)
|| (this.compression == 2 /*BMP_RLE4_COMPRESSION*/)
? SWT.IMAGE_BMP_RLE
: SWT.IMAGE_BMP;
return new ImageData[] {
ImageData.internal_new(
width, height, bitCount, palette, 4, data, 0, null, null, -1, -1, type, 0, 0, 0, 0)
};
}
public void updateImage(ImageData imageData) throws Exception {
fUpdateTopicContent.setString(1, imageData.getUrl());
fUpdateTopicContent.setString(2, imageData.getFilename());
fUpdateTopicContent.setString(3, imageData.getName());
fUpdateTopicContent.execute();
}
public void insertImage(ImageData imageData) throws Exception {
fInsertImage.setString(1, imageData.getName());
fInsertImage.setString(2, imageData.getUrl());
fInsertImage.setString(3, imageData.getFilename());
fInsertImage.execute();
}
/**
* Return a DeviceIndependentImage representing the image block at the current position in the
* input stream. Throw an error if an error occurs.
*/
ImageData readImageBlock(PaletteData defaultPalette) {
int depth;
PaletteData palette;
byte[] block = new byte[9];
try {
inputStream.read(block);
} catch (IOException e) {
SWT.error(SWT.ERROR_IO, e);
}
int left = (block[0] & 0xFF) | ((block[1] & 0xFF) << 8);
int top = (block[2] & 0xFF) | ((block[3] & 0xFF) << 8);
int width = (block[4] & 0xFF) | ((block[5] & 0xFF) << 8);
int height = (block[6] & 0xFF) | ((block[7] & 0xFF) << 8);
byte bitField = block[8];
boolean interlaced = (bitField & 0x40) != 0;
// boolean sorted = (bitField & 0x20) != 0;
if ((bitField & 0x80) != 0) {
// Local palette.
depth = (bitField & 0x7) + 1;
palette = readPalette(1 << depth);
} else {
// No local palette.
depth = defaultDepth;
palette = defaultPalette;
}
/* Work around: Ignore the case where a GIF specifies an
* invalid index for the transparent pixel that is larger
* than the number of entries in the palette. */
if (transparentPixel > 1 << depth) {
transparentPixel = -1;
}
// Promote depth to next highest supported value.
if (!(depth == 1 || depth == 4 || depth == 8)) {
if (depth < 4) depth = 4;
else depth = 8;
}
if (palette == null) {
palette = grayRamp(1 << depth);
}
int initialCodeSize = -1;
try {
initialCodeSize = inputStream.read();
} catch (IOException e) {
SWT.error(SWT.ERROR_IO, e);
}
if (initialCodeSize < 0) {
SWT.error(SWT.ERROR_INVALID_IMAGE);
}
ImageData image =
ImageData.internal_new(
width,
height,
depth,
palette,
4,
null,
0,
null,
null,
-1,
transparentPixel,
SWT.IMAGE_GIF,
left,
top,
disposalMethod,
delayTime);
LZWCodec codec = new LZWCodec();
codec.decode(inputStream, loader, image, interlaced, initialCodeSize);
return image;
}
public static void main(String[] args) {
final Display display = new Display();
final Image image = display.getSystemImage(SWT.ICON_INFORMATION);
final Shell shell = new Shell(display, SWT.NO_TRIM);
Region region = new Region();
final ImageData imageData = image.getImageData();
if (imageData.alphaData != null) {
Rectangle pixel = new Rectangle(0, 0, 1, 1);
for (int y = 0; y < imageData.height; y++) {
for (int x = 0; x < imageData.width; x++) {
if (imageData.getAlpha(x, y) == 255) {
pixel.x = imageData.x + x;
pixel.y = imageData.y + y;
region.add(pixel);
}
}
}
} else {
ImageData mask = imageData.getTransparencyMask();
Rectangle pixel = new Rectangle(0, 0, 1, 1);
for (int y = 0; y < mask.height; y++) {
for (int x = 0; x < mask.width; x++) {
if (mask.getPixel(x, y) != 0) {
pixel.x = imageData.x + x;
pixel.y = imageData.y + y;
region.add(pixel);
}
}
}
}
shell.setRegion(region);
Listener l =
new Listener() {
/** The x/y of the MouseDown, relative to top-left of the shell. */
int startX, startY;
@Override
public void handleEvent(Event e) {
if (e.type == SWT.KeyDown && e.character == SWT.ESC) {
shell.dispose();
}
if (e.type == SWT.MouseDown && e.button == 1) {
Point p = shell.toDisplay(e.x, e.y);
Point loc = shell.getLocation();
startX = p.x - loc.x;
startY = p.y - loc.y;
}
if (e.type == SWT.MouseMove && (e.stateMask & SWT.BUTTON1) != 0) {
Point p = shell.toDisplay(e.x, e.y);
p.x -= startX;
p.y -= startY;
shell.setLocation(p);
}
if (e.type == SWT.Paint) {
e.gc.drawImage(image, imageData.x, imageData.y);
}
}
};
shell.addListener(SWT.KeyDown, l);
shell.addListener(SWT.MouseDown, l);
shell.addListener(SWT.MouseMove, l);
shell.addListener(SWT.Paint, l);
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) display.sleep();
}
region.dispose();
image.dispose();
display.dispose();
}