public Point getViewportOrigin() {
Point result = new Point(0, 0);
Viewport viewport = getViewPort();
if (viewport != null) {
result = new Point(viewport.getClientArea().getLocation());
}
return result;
}
private void disposeRulerViewer(GraphicalViewer viewer) {
if (viewer == null) return;
/*
* There's a tie from the editor's range model to the RulerViewport (via
* a listener) to the RulerRootEditPart to the RulerViewer. Break this
* tie so that the viewer doesn't leak and can be garbage collected.
*/
RangeModel rModel = new DefaultRangeModel();
Viewport port = ((FigureCanvas) viewer.getControl()).getViewport();
port.setHorizontalRangeModel(rModel);
port.setVerticalRangeModel(rModel);
rulerEditDomain.removeViewer(viewer);
viewer.getControl().dispose();
}
public void initStepDat() {
Viewport port = ((FigureCanvas) getControl()).getViewport();
stepData.minX = port.getHorizontalRangeModel().getMinimum();
stepData.maxX = port.getHorizontalRangeModel().getMaximum();
stepData.valueX = port.getHorizontalRangeModel().getValue();
stepData.extendX = port.getHorizontalRangeModel().getExtent();
stepData.minY = port.getVerticalRangeModel().getMinimum();
stepData.maxY = port.getVerticalRangeModel().getMaximum();
stepData.valueY = port.getVerticalRangeModel().getValue();
stepData.extendY = port.getVerticalRangeModel().getExtent();
}
// We override reveal to show the Handles of the selected EditPart when
// scrolling
public void reveal(EditPart part) {
// In some case, the editor control is not created, but get the sync selection event.
// Fix this problem temporary.
if (getFigureCanvas() == null || getFigureCanvas().isDisposed()) {
return;
}
Viewport port = getFigureCanvas().getViewport();
IFigure target = ((GraphicalEditPart) part).getFigure();
Rectangle exposeRegion = target.getBounds().getCopy();
// Get the primary editpolicy
EditPolicy policy = part.getEditPolicy(EditPolicy.PRIMARY_DRAG_ROLE);
// If the policy let us access the handles, proceed, otherwise
// default to original behaviour
if (!(policy instanceof ISelectionHandlesEditPolicy)) {
super.reveal(part);
return;
}
// First translate exposeRegion to the root level
target = target.getParent();
while (target != null && target != port) {
target.translateToParent(exposeRegion);
target = target.getParent();
}
// Merge selection handles if any to the exposeRegion
List handles = ((ISelectionHandlesEditPolicy) policy).getHandles();
for (Iterator iter = handles.iterator(); iter.hasNext(); ) {
AbstractHandle handle = (AbstractHandle) iter.next();
Locator locator = handle.getLocator();
locator.relocate(handle);
exposeRegion.union(handle.getBounds().getCopy());
}
exposeRegion.getExpanded(5, 5);
Dimension viewportSize = port.getClientArea().getSize();
Point topLeft = exposeRegion.getTopLeft();
Point bottomRight = exposeRegion.getBottomRight().translate(viewportSize.getNegated());
Point finalLocation = new Point();
if (viewportSize.width < exposeRegion.width)
finalLocation.x = Math.min(bottomRight.x, Math.max(topLeft.x, port.getViewLocation().x));
else finalLocation.x = Math.min(topLeft.x, Math.max(bottomRight.x, port.getViewLocation().x));
if (viewportSize.height < exposeRegion.height)
finalLocation.y = Math.min(bottomRight.y, Math.max(topLeft.y, port.getViewLocation().y));
else finalLocation.y = Math.min(topLeft.y, Math.max(bottomRight.y, port.getViewLocation().y));
getFigureCanvas().scrollSmoothTo(finalLocation.x, finalLocation.y);
}
/**
* Sets zoom to the passed string. The string must be composed of numeric characters only with the
* exception of a decimal point and a '%' as the last character. If the zoom level contribution
* list has been set, this method should be overridden to provide the appropriate zoom
* implementation for the new zoom levels.
*
* @param zoomString The new zoom level
*/
public void setZoomAsText(String zoomString) {
currentZoomContant = null;
if (zoomString.equalsIgnoreCase(FIT_HEIGHT)) {
currentZoomContant = FIT_HEIGHT;
primSetZoom(getFitHeightZoomLevel());
viewport.getUpdateManager().performUpdate();
viewport.setViewLocation(
viewport.getHorizontalRangeModel().getValue(),
viewport.getVerticalRangeModel().getMinimum());
} else if (zoomString.equalsIgnoreCase(FIT_ALL)) {
currentZoomContant = FIT_ALL;
primSetZoom(getFitPageZoomLevel());
viewport.getUpdateManager().performUpdate();
viewport.setViewLocation(
viewport.getHorizontalRangeModel().getMinimum(),
viewport.getVerticalRangeModel().getMinimum());
} else if (zoomString.equalsIgnoreCase(FIT_WIDTH)) {
currentZoomContant = FIT_WIDTH;
primSetZoom(getFitWidthZoomLevel());
viewport.getUpdateManager().performUpdate();
viewport.setViewLocation(
viewport.getHorizontalRangeModel().getMinimum(),
viewport.getVerticalRangeModel().getValue());
} else {
try {
// Trim off the '%'
if (zoomString.charAt(zoomString.length() - 1) == '%') {
zoomString = zoomString.substring(0, zoomString.length() - 1);
}
double newZoom = Double.parseDouble(zoomString) / 100;
setZoom(newZoom / multiplier);
} catch (Exception e) {
Display.getCurrent().beep();
}
}
}
/**
* Sets the Viewport's view associated with this ZoomManager to the passed Point
*
* @param p The new location for the Viewport's view.
*/
public void setViewLocation(Point p) {
viewport.setViewLocation(p.x, p.y);
}
/**
* Ask for a file name and save the viewer containing the currently selected GraphicalEditPart to
* a image file.
*/
@Override
public void run() {
final IEditorInput editorInput =
(IEditorInput) getWorkbenchPart().getAdapter(IEditorInput.class);
final SaveAsDialog dialog = new SaveAsDialog(new Shell(Display.getDefault()));
dialog.setBlockOnOpen(true);
if (editorInput == null) {
dialog.setOriginalName("viewerImage" + counter + ".png");
} else {
final String fileName = editorInput.getName();
final int extensionPos = fileName.lastIndexOf(".");
dialog.setOriginalName(fileName.substring(0, extensionPos) + ".png");
}
dialog.create();
dialog.setMessage(
"If you don't choose an extension png will be used a default. "
+ "\n"
+ "Export is limited to file size of 15MByte -> you may use file ..(read more) "
+ "\n"
+ "type svg for very large graphs."
+ "\n"
+ "After export the workspace needs a manual refresh to show new image file.");
dialog.setTitle("Specify file to export viewer image (png, jpeg, bmp, svg)");
dialog.open();
if (Window.CANCEL == dialog.getReturnCode()) {
return;
}
final IWorkspaceRoot root = ResourcesPlugin.getWorkspace().getRoot();
final IPath path = root.getLocation().append(dialog.getResult());
int format;
final String ext = path.getFileExtension();
if (ext.equals("png")) {
format = SWT.IMAGE_PNG;
// GIFs work only with 8Bit and not with 32 Bits color depth
// } else if (ext.equals("gif")) {
// format = SWT.IMAGE_GIF;
} else if (ext.equals("jpeg")) {
format = SWT.IMAGE_JPEG;
} else if (ext.equals("bmp")) {
format = SWT.IMAGE_BMP;
// } else if (ext.equals("ico")) {
// format = SWT.IMAGE_ICO;
} else if (ext.equalsIgnoreCase("svg")) {
format = SWT.IMAGE_UNDEFINED; // TODO: find a more appropriate constant for representing SVGs
} else {
MessageDialog.openError(
null,
"Invalid file extension!",
"The specified extension ("
+ ext
+ ") is not a valid image format extension.\nPlease use png, jpeg, bmp or svg!");
return;
}
IFigure figure = ((SimpleRootEditPart) viewer.getRootEditPart()).getFigure();
if (figure instanceof Viewport) {
// This seems to trim the figure to the smallest rectangle containing all child figures
((Viewport) figure).setSize(1, 1);
((Viewport) figure).validate();
figure = ((Viewport) figure).getContents();
}
if (format == SWT.IMAGE_UNDEFINED) {
try {
final File file = path.toFile();
this.exportToSVG(file, figure);
} catch (final IOException e) {
e.printStackTrace();
}
} else {
final byte[] imageCode = createImage(figure, format);
try {
final File file = path.toFile();
final FileOutputStream fos = new FileOutputStream(file);
fos.write(imageCode);
fos.flush();
fos.close();
counter++;
} catch (final IOException e) {
e.printStackTrace();
}
}
}
public void focusGained(org.eclipse.swt.events.FocusEvent event) {
VisualTerm previousFocused = context.getFocused();
if (previousFocused != null) previousFocused.lostFocus();
context.setFocused(this);
LineBorder focusBorder = new LineBorder();
focusBorder.setStyle(Graphics.LINE_DASH);
focusBorder.setColor(getColor());
focusBorder.setWidth(1);
setBorder(focusBorder);
context.selectionChanged(this);
if (canModify()) {
try {
String text = termToText();
context.getTextEditor().setText(text);
context.getTextEditor().setEnabled(true);
context.getTextEditor().setSelection(0, text.length());
context.getTextEditor().addKeyListener(this);
context.getTextEditor().setFocus();
Viewport viewport = ((FigureCanvas) getCanvas()).getViewport();
Point p = viewport.getViewLocation();
if (p.y > getLocation().y) {
viewport.setViewLocation(new Point(p.x, getLocation().y));
} else if (p.y + viewport.getSize().height < getLocation().y + getSize().height
&& viewport.getSize().height > getSize().height) {
viewport.setViewLocation(
new Point(p.x, getLocation().y + getSize().height - viewport.getSize().height));
}
if (p.x > getLocation().x) {
viewport.setViewLocation(new Point(getLocation().x, p.y));
} else if (p.x + viewport.getSize().width < getLocation().x + getSize().width
&& viewport.getSize().width > getSize().width) {
viewport.setViewLocation(
new Point(getLocation().x + getSize().width - viewport.getSize().width, p.y));
}
} catch (IOException e) {
e.printStackTrace();
} catch (PrologException e) {
e.printStackTrace();
} catch (TermInstantiationException e) {
e.printStackTrace();
} catch (ExecutionContextException e) {
e.printStackTrace();
}
}
}