protected void drawImageMosaic(Graphics2D g2) {
// Break the image up into tiles. Draw each
// tile with its own transparency, allowing
// the background to show through to varying
// degrees.
int side = 36;
int width = mImage.getWidth();
int height = mImage.getHeight();
for (int y = 0; y < height; y += side) {
for (int x = 0; x < width; x += side) {
// Calculate an appropriate transparency value.
float xBias = (float) x / (float) width;
float yBias = (float) y / (float) height;
float alpha = 1.0f - Math.abs(xBias - yBias);
g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, alpha));
// Draw the subimage.
int w = Math.min(side, width - x);
int h = Math.min(side, height - y);
BufferedImage tile = mImage.getSubimage(x, y, w, h);
g2.drawImage(tile, x, y, null);
}
}
// Reset the composite.
g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER));
}
class GMap implements Serializable {
/**
* This class contains the modifications to the map, and is capable of generating an image at any
* zoom level. One Gmap is shared by all the viewing panes in the GUI class.
*/
// defaultImage
private transient BufferedImage defaultImage;
// transparency
private transient AlphaComposite opacity70 =
AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.70f);
private transient AlphaComposite opacity40 =
AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.4f);
// google icon
Image googleImage;
// keep track of the data object
private transient GDataSource gDataSourceMap;
private transient GDataSource gDataSourceSatellite;
private transient GDataSource gDataSourceHybrid;
private transient GDataSource gDataSourceOverlay;
// GDraw handles the work of painting data NOT in the database
private GDraw gDraw;
/** Messages */
public static final int MESSAGE_DOWNLOADING = 0;
public static final int MESSAGE_PAINTING = 1;
/** Modes */
public static final int SATELLITE_MODE = 2;
public static final int MAP_MODE = 3;
public static final int HYBRID_MODE = 4;
private int mode;
/**
* Creates a new GMap object based on a base directory specified in the constructure.
*
* @param cache - Base directory to search for cached image folders.
*/
public GMap(String cache) {
// data source
this.gDataSourceMap = new GDataSourceMap(cache + "/map_cache");
this.gDataSourceSatellite = new GDataSourceSatellite(cache + "/sat_cache");
// this.gDataSourceOverlay = new GDataSourceOverlay(cache+"/overlay_cache");
this.gDataSourceHybrid = new GDataSourceHybrid(cache + "/hybrid_cache", gDataSourceSatellite);
// build default image
defaultImage = getDefaultImage(GDataSource.sourceSize.width, GDataSource.sourceSize.height);
// init gdraw draw object
this.gDraw = new GDraw();
// mode
this.mode = MAP_MODE;
// icon
ImageIcon loadImage = new ImageIcon("images/google.png");
googleImage = loadImage.getImage();
}
/** Builds a GMap based on a 'cache' sub-directory. */
public GMap() {
this("cache");
}
// getters
/**
* Returns a GDataSource object used by the GMap object
*
* @return Returns the GDataSource used to grab the images.
*/
public GDataSource getGDataSource() {
return getGDataSource(mode);
}
/**
* Returns a GDataSource based on a specific mode using constants: MAP_MODE, SATELLITE_MODE,
* HYBRID_MODE
*
* @return A GDataSource of the specified mode.
*/
public GDataSource getGDataSource(int mode) {
if (mode == MAP_MODE) return gDataSourceMap;
else if (mode == SATELLITE_MODE) return gDataSourceSatellite;
else if (mode == HYBRID_MODE) return gDataSourceHybrid;
return null;
}
/** */
public GDraw getGDraw() {
return gDraw;
}
/**
* Gets the current used by the GMap object
*
* @return Current mode: MAP_MODE, SATELLITE_MODE, HYBRID_MODE
*/
public int getMode() {
return mode;
}
/**
* Sets the current mode of the GMap object
*
* @param Mode to set: MAP_MODE, SATELLITE_MODE, HYBRID_MODE
*/
public void setMode(int mode) {
this.mode = mode;
}
/**
* Sets the registered GDraw to gDraw. This method is intended primarily for serialization
* purposes, and should not be used to modify the state of the GMap. Instead, use the GDraw's
* public methods.
*
* @param gDraw
*/
public void setGDraw(GDraw gDraw) {
this.gDraw = gDraw;
}
/**
* Method used to build image asynchronously
*
* @param image - Image to paint
* @param x - x Pixel value
* @param y - y Pixel value
* @param w - width in pixels
* @param h - height in pixels
* @param cachedZoom - zoom level used
* @param listener - GMapListener object
*/
public void paintAsynchronousImage(
BufferedImage image,
int x,
int y,
int w,
int h,
int zoom,
int cachedZoom,
GMapListener listener) {
buildImage(image, x, y, w, h, zoom, cachedZoom, listener);
}
/**
* Returns image at x and y
*
* @param x - x Pixel value
* @param y - y Pixel value
* @param w - width in pixels
* @param h - height in pixels
* @param cachedZoom - zoom level used
*/
public BufferedImage getImage(int x, int y, int w, int h, int zoom, int cachedZoom) {
// create buffered image for return
return getImage(x, y, w, h, zoom, cachedZoom, null);
}
/**
* Returns image at x and y
*
* @param x - x Pixel value
* @param y - y Pixel value
* @param w - width in pixels
* @param h - height in pixels
* @param cachedZoom - zoom level used
* @param listener - GMapListener to use in getImage
*/
public BufferedImage getImage(
int x, int y, int w, int h, int zoom, int cachedZoom, GMapListener listener) {
BufferedImage toReturn = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
buildImage(toReturn, x, y, w, h, zoom, cachedZoom, listener);
return toReturn;
}
/**
* Method used to cacheImage
*
* @param image - Image to paint
* @param x - x Pixel value
* @param y - y Pixel value
* @param w - width in pixels
* @param h - height in pixels
* @param zoom - zoom level used
*/
public void cacheImage(int x, int y, int w, int h, int zoom) {
cacheImage(x, y, w, h, zoom, null);
}
/**
* Method used to cache image
*
* @param image - Image to paint
* @param x - x Pixel value
* @param y - y Pixel value
* @param w - width in pixels
* @param h - height in pixels
* @param zoom - zoom level used
*/
public void cacheImage(int x, int y, int w, int h, int zoom, GMapListener listener) {
paintAsynchronousImage(null, x, y, w, h, zoom, (GPhysicalPoint.MIN_ZOOM - 1), listener);
}
/** Main method used to build the image based on a large number of tiles. */
public void buildImage(
BufferedImage toReturn,
int x,
int y,
int w,
int h,
int zoom,
int cachedZoom,
GMapListener listener) {
// validate
// if(x < 0 || y < 0 || w <= 0 || h <= 0) return getDefaultImage(w,h);
// if(toReturn != null) Graphics2D g = toReturn.createGraphics();
// find index of point
int xIndex = x / GDataSource.sourceSize.width;
int yIndex = y / GDataSource.sourceSize.height;
// find coord of our starting point
int xCoord = x % GDataSource.sourceSize.width;
int yCoord = y % GDataSource.sourceSize.height;
// Checks for invalid xCoord and yCoord
if (xCoord < 0) {
xCoord = 0;
}
if (yCoord < 0) {
yCoord = 0;
}
// load this index
BufferedImage image = getIndexedImage(xIndex, yIndex, zoom, cachedZoom, listener);
// get info about the image
// Dimension imageSize = new Dimension(image.getWidth(),image.getHeight());
// Holds number of row and column images needed
int rowImages;
int colImages;
// find the width of what we CAN paint
int paintWidth = GDataSource.sourceSize.width - xCoord;
int paintHeight = GDataSource.sourceSize.height - yCoord;
// Calculate number of row images
if ((h - paintHeight) % 256 == 0) {
rowImages = 1 + (h - paintHeight) / 256;
} else {
rowImages = 2 + (h - paintHeight) / 256;
}
// Calculate number of column images
if ((w - paintWidth) % 256 == 0) {
colImages = 1 + (w - paintWidth) / 256;
} else {
colImages = 2 + (w - paintWidth) / 256;
}
// Overal Image coordinates
int xImage = 0;
int yImage = 0;
// DEBUG
// System.out.println(x + " " + y + " " + w + " " + h + " " + rowImages + " " + colImages);
// System.out.println();
// set listener
if (listener != null) listener.updateGMapTaskSize(rowImages * colImages);
// a counter for the listener
int completed = 0;
// Iteratively loops through all CACHED images and paints them
for (int row = 0; row < rowImages; row++) {
for (int col = 0; col < colImages; col++) {
int thisXIndex = x / GDataSource.sourceSize.width + col;
int thisYIndex = y / GDataSource.sourceSize.height + row;
getSpecificImage(x, y, w, h, col, row, toReturn, zoom, cachedZoom, listener, true);
if (getGDataSource().isCached(thisXIndex, thisYIndex, zoom)) {
if (listener != null) {
listener.updateGMapCompleted(completed);
completed++;
}
}
if (listener.asynchronousGMapStopFlag()) return;
}
}
// do the UNCACHED IMAGES NEXT
for (int row = 0; row < rowImages; row++) {
for (int col = 0; col < colImages; col++) {
int thisXIndex = x / GDataSource.sourceSize.width + col;
int thisYIndex = y / GDataSource.sourceSize.height + row;
if (!getGDataSource().isCached(thisXIndex, thisYIndex, zoom)) {
getSpecificImage(x, y, w, h, col, row, toReturn, zoom, cachedZoom, listener, false);
if (listener != null) {
listener.updateGMapCompleted(completed);
completed++;
if (listener.asynchronousGMapStopFlag()) return;
}
}
}
}
// the dispatch to GDraw object
gDraw.draw(toReturn, new GPhysicalPoint(x, y, zoom), zoom);
}
private BufferedImage getSpecificImage(
int x,
int y,
int w,
int h,
int imgIndexX,
int imgIndexY,
BufferedImage buffImg,
int zoom,
int cachedZoom,
GMapListener listener,
boolean localFilesOnly) {
int xIndex = x / GDataSource.sourceSize.width;
int yIndex = y / GDataSource.sourceSize.height;
xIndex += imgIndexX;
yIndex += imgIndexY;
BufferedImage image = null;
if (!localFilesOnly || getGDataSource().isCached(xIndex, yIndex, zoom))
image = getIndexedImage(xIndex, yIndex, zoom, cachedZoom, listener);
int xCoord = x % GDataSource.sourceSize.width;
int yCoord = y % GDataSource.sourceSize.height;
// Checks for invalid xCoord and yCoord
if (xCoord < 0) {
xCoord = 0;
}
if (yCoord < 0) {
yCoord = 0;
}
// get info about the image
Dimension imageSize =
new Dimension(getGDataSource().sourceSize.width, getGDataSource().sourceSize.height);
// find the width of what we CAN paint
int initPaintWidth = imageSize.width - xCoord;
int initPaintHeight = imageSize.height - yCoord;
int paintWidth = initPaintWidth;
int paintHeight = initPaintHeight;
int rowImages = numOfRows(x, y, h, zoom, cachedZoom);
int colImages = numOfCols(x, y, w, zoom, cachedZoom);
if (imgIndexX >= colImages || imgIndexY >= rowImages) {
return null;
}
int xImage = 0;
int yImage = 0;
int xInitCoord = xCoord;
int yInitCoord = yCoord;
if (imgIndexX > 0) {
xImage = initPaintWidth + (imgIndexX - 1) * imageSize.width;
xCoord = 0;
if (imgIndexX < (colImages - 1)) {
paintWidth = imageSize.width;
} else {
paintWidth = w - ((colImages - 2) * imageSize.width) - (imageSize.width - xInitCoord);
}
}
if (imgIndexY > 0) {
yImage = initPaintHeight + (imgIndexY - 1) * imageSize.height;
yCoord = 0;
if (imgIndexY < (rowImages - 1)) {
paintHeight = imageSize.height;
} else {
paintHeight = h - ((rowImages - 2) * imageSize.height) - (imageSize.height - yInitCoord);
}
}
if (buffImg != null) {
Graphics2D g = (Graphics2D) buffImg.getGraphics();
if (image != null) {
// System.out.println(xCoord + ":" + yCoord + ":" + paintWidth + ":" + paintHeight);
g.drawImage(
image.getSubimage(xCoord, yCoord, paintWidth, paintHeight),
xImage,
yImage,
paintWidth,
paintHeight,
null);
} else {
Composite originalComposite = g.getComposite();
g.setComposite(opacity40);
g.setColor(Color.BLACK);
g.fillRect(xImage, yImage, paintWidth, paintHeight);
g.setComposite(originalComposite);
}
}
return buffImg;
}
/** Calculates the number of rows of tiles needed to build current image. */
public int numOfRows(int x, int y, int h, int zoom, int cachedZoom) {
int xIndex = x / GDataSource.sourceSize.width;
int yIndex = y / GDataSource.sourceSize.height;
// BufferedImage image = getIndexedImage(xIndex,yIndex,zoom,cachedZoom);
int yCoord = y % GDataSource.sourceSize.height;
// find the width of what we CAN paint
int paintHeight = GDataSource.sourceSize.height - yCoord;
int rowImages;
// Calculate number of row images
if ((h - paintHeight) % 256 == 0) {
rowImages = 1 + (h - paintHeight) / 256;
} else {
rowImages = 2 + (h - paintHeight) / 256;
}
return rowImages;
}
/** Calculates the number of columns of tiles needed to build current image. */
public int numOfCols(int x, int y, int w, int zoom, int cachedZoom) {
int xIndex = x / GDataSource.sourceSize.width;
int yIndex = y / GDataSource.sourceSize.height;
// BufferedImage image = getIndexedImage(xIndex,yIndex,zoom,cachedZoom);
int xCoord = x % GDataSource.sourceSize.height;
// find the width of what we CAN paint
int paintWidth = GDataSource.sourceSize.width - xCoord;
int colImages;
// Calculate number of row images
if ((w - paintWidth) % 256 == 0) {
colImages = 1 + (w - paintWidth) / 256;
} else {
colImages = 2 + (w - paintWidth) / 256;
}
return colImages;
}
public BufferedImage getIndexedImage(int x, int y, int zoom, int cacheZoom) {
return getIndexedImage(x, y, zoom, cacheZoom, null);
}
/** Get an image based on index numbers */
public BufferedImage getIndexedImage(
int x, int y, int zoom, int cacheZoom, GMapListener listener) {
if (listener != null) {
if (!getGDataSource().isCached(x, y, zoom)) {
listener.updateGMapPainting();
listener.updateGMapMessage(GMap.MESSAGE_DOWNLOADING);
} else {
listener.updateGMapMessage(GMap.MESSAGE_PAINTING);
}
}
BufferedImage thumbImage = getGDataSource().getImage(x, y, zoom, true);
if (thumbImage == null) return defaultImage;
// if we dont have to paint cache, return here
if (cacheZoom == (GPhysicalPoint.MIN_ZOOM - 1) || cacheZoom >= zoom) return thumbImage;
BufferedImage paintedImage =
new BufferedImage(
GDataSource.sourceSize.width,
GDataSource.sourceSize.height,
BufferedImage.TYPE_INT_ARGB);
Graphics2D graphics2D = paintedImage.createGraphics();
graphics2D.drawImage(
thumbImage, 0, 0, GDataSource.sourceSize.width, GDataSource.sourceSize.height, null);
// now lets move to painting the cache
double imageNum = Math.pow(2, zoom - cacheZoom);
// draw cache lines
int startX = (int) (imageNum * x);
int startY = (int) (imageNum * y);
// get composite to restore later, set new transparent composite
Composite originalComposite = graphics2D.getComposite();
graphics2D.setComposite(opacity40);
// draw grid
for (int i = 0; i < imageNum; i++) {
for (int j = 0; j < imageNum; j++) {
// points
Point upperLeft =
new Point(
(int) (GDataSource.sourceSize.width / imageNum) * i,
(int) (GDataSource.sourceSize.height / imageNum) * j);
Dimension size =
new Dimension(
(int) (GDataSource.sourceSize.width / imageNum),
(int) (GDataSource.sourceSize.height / imageNum));
// draw lines
graphics2D.setColor(new Color(100, 100, 100));
graphics2D.drawLine(upperLeft.x, upperLeft.y, upperLeft.x + size.width, upperLeft.y);
graphics2D.drawLine(upperLeft.x, upperLeft.y, upperLeft.x, upperLeft.y + size.height);
// check if file exists
if (getGDataSource().isCached(startX + i, startY + j, cacheZoom))
graphics2D.setColor(Color.RED);
else graphics2D.setColor(new Color(155, 155, 155));
// shade rectangle
graphics2D.fillRect(upperLeft.x, upperLeft.y, size.width, size.height);
}
}
// restore composite
graphics2D.setComposite(originalComposite);
return paintedImage;
}
// initialize default image
private BufferedImage getDefaultImage(int w, int h) {
BufferedImage defaultImage = new BufferedImage(w, h, BufferedImage.TYPE_INT_ARGB);
Graphics2D graphics2D = defaultImage.createGraphics();
graphics2D.setColor(new Color(200, 200, 200));
graphics2D.fillRect(0, 0, w, h);
graphics2D.setColor(new Color(130, 130, 130));
graphics2D.drawRect(0, 0, w - 1, h - 1);
return defaultImage;
}
/** Method to set the <tt>cacheDirectory</tt> property. */
public void setCacheDirectory() {}
}