/**
* Given a label figure object, this will calculate the correct Font needed to display into screen
* coordinates, taking into account the current mapmode. This will typically be used by direct
* edit cell editors that need to display independent of the zoom or any coordinate mapping that
* is taking place on the drawing surface.
*
* @param label the label to use for the font calculation
* @return the <code>Font</code> that is scaled to the screen coordinates. Note: the returned
* <code>Font</code> should not be disposed since it is cached by a common resource manager.
*/
protected Font getScaledFont(IFigure label) {
Font scaledFont = label.getFont();
FontData data = scaledFont.getFontData()[0];
Dimension fontSize = new Dimension(0, MapModeUtil.getMapMode(label).DPtoLP(data.getHeight()));
label.translateToAbsolute(fontSize);
if (Math.abs(data.getHeight() - fontSize.height) < 2) fontSize.height = data.getHeight();
try {
FontDescriptor fontDescriptor = FontDescriptor.createFrom(data);
cachedFontDescriptors.add(fontDescriptor);
return getResourceManager().createFont(fontDescriptor);
} catch (DeviceResourceException e) {
Trace.catching(
DiagramUIPlugin.getInstance(),
DiagramUIDebugOptions.EXCEPTIONS_CATCHING,
getClass(),
"getScaledFont",
e); //$NON-NLS-1$
Log.error(
DiagramUIPlugin.getInstance(),
DiagramUIStatusCodes.IGNORED_EXCEPTION_WARNING,
"getScaledFont",
e); //$NON-NLS-1$
}
return JFaceResources.getDefaultFont();
}
/*
* @see NodeEditPart#getTargetConnectionAnchor(ConnectionEditPart)
*/
public ConnectionAnchor getTargetConnectionAnchor(
org.eclipse.gef.ConnectionEditPart connEditPart) {
final ConnectionNodeEditPart connection = (ConnectionNodeEditPart) connEditPart;
String t = ""; // $NON-NLS-1$
try {
t =
(String)
getEditingDomain()
.runExclusive(
new RunnableWithResult.Impl() {
public void run() {
Anchor a = connection.getEdge().getTargetAnchor();
if (a instanceof IdentityAnchor) setResult(((IdentityAnchor) a).getId());
else setResult(""); // $NON-NLS-1$
}
});
} catch (InterruptedException e) {
Trace.catching(
DiagramUIPlugin.getInstance(),
DiagramUIDebugOptions.EXCEPTIONS_CATCHING,
getClass(),
"getTargetConnectionAnchor",
e); //$NON-NLS-1$
Log.error(
DiagramUIPlugin.getInstance(),
DiagramUIStatusCodes.IGNORED_EXCEPTION_WARNING,
"getTargetConnectionAnchor",
e); //$NON-NLS-1$
}
return ((IAnchorableFigure) getFigure()).getConnectionAnchor(t);
}
/**
* This method obtains the fonts that are being used by the figure at its zoom level.
*
* @param gep the associated <code>GraphicalEditPart</code> of the figure
* @param actualFont font being used by the figure
* @param display
* @return <code>actualFont</code> if zoom level is 1.0 (or when there's an error), new Font
* otherwise.
*/
private Font getZoomLevelFont(Font actualFont, Display display) {
Object zoom = getEditPart().getViewer().getProperty(ZoomManager.class.toString());
if (zoom != null) {
double zoomLevel = ((ZoomManager) zoom).getZoom();
if (zoomLevel == 1.0f) return actualFont;
FontData[] fd = new FontData[actualFont.getFontData().length];
FontData tempFD = null;
for (int i = 0; i < fd.length; i++) {
tempFD = actualFont.getFontData()[i];
fd[i] =
new FontData(
tempFD.getName(), (int) (zoomLevel * tempFD.getHeight()), tempFD.getStyle());
}
try {
FontDescriptor fontDescriptor = FontDescriptor.createFrom(fd);
cachedFontDescriptors.add(fontDescriptor);
return getResourceManager().createFont(fontDescriptor);
} catch (DeviceResourceException e) {
Trace.catching(
DiagramUIPlugin.getInstance(),
DiagramUIDebugOptions.EXCEPTIONS_CATCHING,
getClass(),
"getZoomLevelFonts",
e); //$NON-NLS-1$
Log.error(
DiagramUIPlugin.getInstance(),
DiagramUIStatusCodes.IGNORED_EXCEPTION_WARNING,
"getZoomLevelFonts",
e); //$NON-NLS-1$
return actualFont;
}
} else return actualFont;
}
