VivaldiPanelpublic class VivaldiPanel extends Object
| Fields Summary |
|---|
| private static final int | ALPHA_FOCUS | | private static final int | ALPHA_NOFOCUS | | Display | display | | Composite | parent | | Canvas | canvas | | Scale | scale | | private boolean | mouseLeftDown | | private boolean | mouseRightDown | | private int | xDown | | private int | yDown | | private boolean | antiAliasingAvailable | | private List | lastContacts | | private com.aelitis.azureus.core.dht.transport.DHTTransportContact | lastSelf | | private org.eclipse.swt.graphics.Image | img | | private int | alpha | | private boolean | autoAlpha |
| Constructors Summary |
|---|
public VivaldiPanel(Composite parent)
this.parent = parent;
this.display = parent.getDisplay();
this.canvas = new Canvas(parent,SWT.NO_BACKGROUND);
this.scale = new Scale();
canvas.addPaintListener(new PaintListener() {
public void paintControl(PaintEvent e) {
if (img != null && !img.isDisposed()) {
Rectangle bounds = img.getBounds();
if (bounds.width >= e.width && bounds.height >= e.height) {
if (alpha != 255) {
e.gc.setAlpha(alpha);
}
e.gc.drawImage(img, e.x, e.y, e.width, e.height, e.x, e.y,
e.width, e.height);
}
} else {
e.gc.drawText(MessageText.getString("VivaldiView.notAvailable"), 5,
5, true);
}
}
});
canvas.addMouseListener(new MouseAdapter() {
public void mouseDown(MouseEvent event) {
if(event.button == 1) mouseLeftDown = true;
if(event.button == 3) mouseRightDown = true;
xDown = event.x;
yDown = event.y;
scale.saveMinX = scale.minX;
scale.saveMaxX = scale.maxX;
scale.saveMinY = scale.minY;
scale.saveMaxY = scale.maxY;
}
public void mouseUp(MouseEvent event) {
if(event.button == 1) mouseLeftDown = false;
if(event.button == 3) mouseRightDown = false;
refreshContacts(lastContacts, lastSelf);
}
});
canvas.addListener(SWT.KeyDown, new Listener() {
public void handleEvent(Event event) {
}
});
canvas.addListener(SWT.MouseWheel, new Listener() {
public void handleEvent(Event event) {
System.out.println(event.count);
scale.saveMinX = scale.minX;
scale.saveMaxX = scale.maxX;
scale.saveMinY = scale.minY;
scale.saveMaxY = scale.maxY;
int deltaY = event.count * 5;
// scaleFactor>1 means zoom in, this happens when
// deltaY<0 which happens when the mouse is moved up.
float scaleFactor = 1 - (float) deltaY / 300;
if(scaleFactor <= 0) scaleFactor = 0.01f;
// Scalefactor of e.g. 3 makes elements 3 times larger
float moveFactor = 1 - 1/scaleFactor;
float centerX = (scale.saveMinX + scale.saveMaxX)/2;
scale.minX = scale.saveMinX + moveFactor * (centerX - scale.saveMinX);
scale.maxX = scale.saveMaxX - moveFactor * (scale.saveMaxX - centerX);
float centerY = (scale.saveMinY + scale.saveMaxY)/2;
scale.minY = scale.saveMinY + moveFactor * (centerY - scale.saveMinY);
scale.maxY = scale.saveMaxY - moveFactor * (scale.saveMaxY - centerY);
refreshContacts(lastContacts, lastSelf);
}
});
canvas.addMouseMoveListener(new MouseMoveListener() {
public void mouseMove(MouseEvent event) {
if(mouseLeftDown) {
int deltaX = event.x - xDown;
int deltaY = event.y - yDown;
int width = scale.width;
int height = scale.height;
float ratioX = (float) (scale.saveMaxX - scale.saveMinX) / (float) width;
float ratioY = (float) (scale.saveMaxY - scale.saveMinY) / (float) height;
float realDeltaX = deltaX * ratioX;
float realDeltaY = deltaY * ratioY;
scale.minX = scale.saveMinX - realDeltaX;
scale.maxX = scale.saveMaxX - realDeltaX;
scale.minY = scale.saveMinY - realDeltaY;
scale.maxY = scale.saveMaxY - realDeltaY;
refreshContacts(lastContacts, lastSelf);
}
if(mouseRightDown) {
int deltaY = event.y - yDown;
// scaleFactor>1 means zoom in, this happens when
// deltaY<0 which happens when the mouse is moved up.
float scaleFactor = 1 - (float) deltaY / 300;
if(scaleFactor <= 0) scaleFactor = 0.01f;
// Scalefactor of e.g. 3 makes elements 3 times larger
float moveFactor = 1 - 1/scaleFactor;
float centerX = (scale.saveMinX + scale.saveMaxX)/2;
scale.minX = scale.saveMinX + moveFactor * (centerX - scale.saveMinX);
scale.maxX = scale.saveMaxX - moveFactor * (scale.saveMaxX - centerX);
float centerY = (scale.saveMinY + scale.saveMaxY)/2;
scale.minY = scale.saveMinY + moveFactor * (centerY - scale.saveMinY);
scale.maxY = scale.saveMaxY - moveFactor * (scale.saveMaxY - centerY);
refreshContacts(lastContacts, lastSelf);
}
}
});
canvas.addMouseTrackListener(new MouseTrackListener() {
public void mouseHover(MouseEvent e) {
}
public void mouseExit(MouseEvent e) {
if (autoAlpha) {
setAlpha(ALPHA_NOFOCUS);
}
}
public void mouseEnter(MouseEvent e) {
if (autoAlpha) {
setAlpha(ALPHA_FOCUS);
}
}
});
|
| Methods Summary |
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| private void | draw(org.eclipse.swt.graphics.GC gc, float x, float y, float h)
int x0 = scale.getX(x,y);
int y0 = scale.getY(x,y);
gc.fillRectangle(x0-1,y0-1,3,3);
gc.drawLine(x0,y0,x0,(int)(y0-200*h/(scale.maxY-scale.minY)));
| | private void | draw(org.eclipse.swt.graphics.GC gc, float x, float y, float h, com.aelitis.azureus.core.dht.control.DHTControlContact contact, int distance, float error)
if(x == 0 && y == 0) return;
if(error > 1) error = 1;
int errDisplay = (int) (100 * error);
int x0 = scale.getX(x,y);
int y0 = scale.getY(x,y);
gc.fillRectangle(x0-1,y0-1,3,3);
//int elevation =(int) ( 200*h/(scale.maxY-scale.minY));
//gc.drawLine(x0,y0,x0,y0-elevation);
String text = /*contact.getTransportContact().getAddress().getAddress().getHostAddress() + " (" + */distance + " ms \nerr:"+errDisplay+"%";
int lineReturn = text.indexOf("\n");
int xOffset = gc.getFontMetrics().getAverageCharWidth() * (lineReturn != -1 ? lineReturn:text.length()) / 2;
gc.drawText(text,x0-xOffset,y0,true);
| | private void | drawBorder(org.eclipse.swt.graphics.GC gc)
| | private void | drawSelf(org.eclipse.swt.graphics.GC gc, float x, float y, float h, float errorEstimate)
int x0 = scale.getX(x, y);
int y0 = scale.getY(x, y);
//gc.drawOval(x0-50, y0-50, 100, 100);
gc.drawLine(x0-15, y0, x0+15, y0); // Horizontal
gc.drawLine(x0, y0-15, x0, y0+15); // Vertical
| | public int | getAlpha()
return alpha;
| | public void | refresh(java.util.List vivaldiPositions)
if(canvas.isDisposed()) return;
Rectangle size = canvas.getBounds();
scale.width = size.width;
scale.height = size.height;
if (img != null && !img.isDisposed()) {
img.dispose();
}
img = new Image(display,size);
GC gc = new GC(img);
Color white = ColorCache.getColor(display,255,255,255);
gc.setForeground(white);
gc.setBackground(white);
gc.fillRectangle(size);
Color blue = ColorCache.getColor(display,66,87,104);
gc.setForeground(blue);
gc.setBackground(blue);
Iterator iter = vivaldiPositions.iterator();
while(iter.hasNext()) {
VivaldiPosition position = (VivaldiPosition)iter.next();
HeightCoordinatesImpl coord = (HeightCoordinatesImpl) position.getCoordinates();
float error = position.getErrorEstimate() - VivaldiPosition.ERROR_MIN;
if(error < 0) error = 0;
if(error > 1) error = 1;
int blueComponent = (int) (255 - error * 255);
int redComponent = (int) (255*error);
// Don't use ColorCache, as our color creation is temporary and
// varying
Color drawColor = new Color(display,redComponent,50,blueComponent);
gc.setForeground(drawColor);
draw(gc,coord.getX(),coord.getY(),coord.getH());
drawColor.dispose();
}
gc.dispose();
canvas.redraw();
| | public void | refreshContacts(java.util.List contacts, com.aelitis.azureus.core.dht.transport.DHTTransportContact self)
if (contacts == null || self == null) {
return;
}
lastContacts = contacts;
lastSelf = self;
if(canvas.isDisposed()) return;
Rectangle size = canvas.getBounds();
if (size.isEmpty()) {
return;
}
scale.width = size.width;
scale.height = size.height;
Color white = ColorCache.getColor(display,255,255,255);
Color blue = ColorCache.getColor(display,66,87,104);
if (img != null && !img.isDisposed()) {
img.dispose();
}
img = new Image(display,size);
GC gc = new GC(img);
gc.setForeground(white);
gc.setBackground(white);
gc.fillRectangle(size);
if(SWT.getVersion() >= 3138 && antiAliasingAvailable) {
try {
//gc.setTextAntialias(SWT.ON);
//gc.setAntialias(SWT.ON);
} catch(Exception e) {
antiAliasingAvailable = false;
}
}
gc.setForeground(blue);
gc.setBackground(white);
DHTNetworkPosition _ownPosition = self.getNetworkPosition(DHTNetworkPosition.POSITION_TYPE_VIVALDI_V1);
if ( _ownPosition == null ){
return;
}
VivaldiPosition ownPosition = (VivaldiPosition)_ownPosition;
float ownErrorEstimate = ownPosition.getErrorEstimate();
HeightCoordinatesImpl ownCoords =
(HeightCoordinatesImpl) ownPosition.getCoordinates();
gc.drawText("Our error: " + ownErrorEstimate,10,10);
Color black = ColorCache.getColor(display, 0, 0, 0);
gc.setBackground(black); // Color of the squares
// Draw all known positions of other contacts
Iterator iter = contacts.iterator();
while(iter.hasNext()) {
DHTControlContact contact = (DHTControlContact) iter.next();
DHTNetworkPosition _position = contact.getTransportContact().getNetworkPosition(DHTNetworkPosition.POSITION_TYPE_VIVALDI_V1);
if ( _position == null ){
continue;
}
VivaldiPosition position = (VivaldiPosition)_position;
HeightCoordinatesImpl coord = (HeightCoordinatesImpl) position.getCoordinates();
if(coord.isValid()) {
draw(gc,coord.getX(),coord.getY(),coord.getH(),contact,(int)ownCoords.distance(coord),position.getErrorEstimate());
}
}
// Mark our own position
Color red = ColorCache.getColor(display, 255, 0, 0);
gc.setForeground(red);
drawSelf(gc, ownCoords.getX(), ownCoords.getY(),
ownCoords.getH(), ownErrorEstimate);
gc.dispose();
canvas.redraw();
| | public void | setAlpha(int alpha)
this.alpha = alpha;
if (canvas != null && !canvas.isDisposed()) {
canvas.redraw();
}
| | public void | setAutoAlpha(boolean autoAlpha)
this.autoAlpha = autoAlpha;
if (autoAlpha) {
setAlpha(canvas.getDisplay().getCursorControl() == canvas ? ALPHA_FOCUS : ALPHA_NOFOCUS);
}
| | public void | setLayoutData(java.lang.Object data)
canvas.setLayoutData(data);
|
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