Examples with ElkLabel org.eclipse.elk.graph.ElkLabel used on opensource projects

Example 36 with ElkLabel

use of org.eclipse.elk.graph.ElkLabel in project elk by eclipse.

the class PortLabelPlacementVariantsTest method assertCentered.

private void assertCentered(final ElkPort port) {
    final ElkLabel label = getLabel(port);
    if (PortSide.SIDES_EAST_WEST.contains(port.getProperty(CoreOptions.PORT_SIDE))) {
        final double portCenter = port.getHeight() / 2.0;
        final double labelCenter = label.getY() + label.getHeight() / 2.0;
        assertThat(labelCenter, OrderingComparison.comparesEqualTo(portCenter));
    } else if (PortSide.SIDES_NORTH_SOUTH.contains(port.getProperty(CoreOptions.PORT_SIDE))) {
        final double portCenter = port.getWidth() / 2.0;
        final double labelCenter = label.getX() + label.getWidth() / 2.0;
        assertThat(labelCenter, OrderingComparison.comparesEqualTo(portCenter));
    } else {
        assertTrue(false);
    }
}

Example 37 with ElkLabel

use of org.eclipse.elk.graph.ElkLabel in project elk by eclipse.

the class GmfDiagramLayoutConnector method createNodeLabel.

/**
 * Create a node label while building the layout graph.
 *
 * @param mapping
 *            the layout mapping
 * @param labelEditPart
 *            the label edit part
 * @param nodeEditPart
 *            the parent node edit part
 * @param elknode
 *            the layout node for which the label is set
 * @return the created label
 */
protected ElkLabel createNodeLabel(final LayoutMapping mapping, final IGraphicalEditPart labelEditPart, final IGraphicalEditPart nodeEditPart, final ElkNode elknode) {
    IFigure labelFigure = labelEditPart.getFigure();
    String text = null;
    Font font = null;
    if (labelFigure instanceof WrappingLabel) {
        WrappingLabel wrappingLabel = (WrappingLabel) labelFigure;
        text = wrappingLabel.getText();
        font = wrappingLabel.getFont();
    } else if (labelFigure instanceof Label) {
        Label label = (Label) labelFigure;
        text = label.getText();
        font = label.getFont();
    }
    if (text != null) {
        ElkLabel label = ElkGraphUtil.createLabel(elknode);
        label.setText(text);
        mapping.getGraphMap().put(label, labelEditPart);
        Rectangle labelBounds = getAbsoluteBounds(labelFigure);
        Rectangle nodeBounds = getAbsoluteBounds(nodeEditPart.getFigure());
        label.setLocation(labelBounds.x - nodeBounds.x, labelBounds.y - nodeBounds.y);
        try {
            Dimension size = labelFigure.getPreferredSize();
            label.setDimensions(size.width, size.height);
            if (font != null && !font.isDisposed()) {
                label.setProperty(CoreOptions.FONT_NAME, font.getFontData()[0].getName());
                label.setProperty(CoreOptions.FONT_SIZE, font.getFontData()[0].getHeight());
            }
        } catch (SWTException exception) {
        // ignore exception and leave the label size to (0, 0)
        }
        return label;
    }
    return null;
}

Example 38 with ElkLabel

use of org.eclipse.elk.graph.ElkLabel in project elk by eclipse.

the class GmfDiagramLayoutConnector method processEdgeLabels.

/**
 * Process the labels of an edge.
 *
 * @param mapping
 *            the layout mapping
 * @param connection
 *            the connection edit part
 * @param edge
 *            the layout edge
 * @param placement
 *            predefined placement for all labels, or {@code Optional#empty()} if the placement shall be derived
 *            from the edit part
 * @param offset
 *            the offset for coordinates
 */
protected void processEdgeLabels(final LayoutMapping mapping, final ConnectionEditPart connection, final ElkEdge edge, final Optional<EdgeLabelPlacement> placement, final KVector offset) {
    /*
         * ars: source and target is exchanged when defining it in the gmfgen file. So if Emma sets
         * a label to be placed as target on a connection, then the label will show up next to the
         * source node in the diagram editor. So correct it here, very ugly.
         */
    for (Object obj : connection.getChildren()) {
        if (obj instanceof LabelEditPart) {
            LabelEditPart labelEditPart = (LabelEditPart) obj;
            IFigure labelFigure = labelEditPart.getFigure();
            // Check if the label is visible in the first place
            if (labelFigure == null || !labelFigure.isVisible()) {
                continue;
            }
            Rectangle labelBounds = getAbsoluteBounds(labelFigure);
            String labelText = null;
            Dimension iconBounds = null;
            if (labelFigure instanceof WrappingLabel) {
                WrappingLabel wrappingLabel = (WrappingLabel) labelFigure;
                labelText = wrappingLabel.getText();
                if (wrappingLabel.getIcon() != null) {
                    iconBounds = new Dimension();
                    iconBounds.width = wrappingLabel.getIcon().getBounds().width + wrappingLabel.getIconTextGap();
                    iconBounds.height = wrappingLabel.getIcon().getBounds().height;
                    // Add more characters to the text for layouters that need the text to
                    // determine the label size.
                    labelText = "O " + labelText;
                }
            } else if (labelFigure instanceof Label) {
                Label label = (Label) labelFigure;
                labelText = label.getText();
                if (label.getIcon() != null) {
                    iconBounds = label.getIconBounds().getSize();
                    iconBounds.width += label.getIconTextGap();
                    // Add more characters to the text for layouters that need the text to
                    // determine the label size.
                    labelText = "O " + labelText;
                }
            }
            if (labelText != null && labelText.length() > 0) {
                ElkLabel label = ElkGraphUtil.createLabel(edge);
                if (!placement.isPresent()) {
                    switch(labelEditPart.getKeyPoint()) {
                        case ConnectionLocator.SOURCE:
                            label.setProperty(CoreOptions.EDGE_LABELS_PLACEMENT, EdgeLabelPlacement.HEAD);
                            break;
                        case ConnectionLocator.MIDDLE:
                            label.setProperty(CoreOptions.EDGE_LABELS_PLACEMENT, EdgeLabelPlacement.CENTER);
                            break;
                        case ConnectionLocator.TARGET:
                            label.setProperty(CoreOptions.EDGE_LABELS_PLACEMENT, EdgeLabelPlacement.TAIL);
                            break;
                    }
                } else {
                    label.setProperty(CoreOptions.EDGE_LABELS_PLACEMENT, placement.get());
                }
                Font font = labelFigure.getFont();
                if (font != null && !font.isDisposed()) {
                    label.setProperty(CoreOptions.FONT_NAME, font.getFontData()[0].getName());
                    label.setProperty(CoreOptions.FONT_SIZE, font.getFontData()[0].getHeight());
                }
                label.setLocation(labelBounds.x - offset.x, labelBounds.y - offset.y);
                if (iconBounds != null) {
                    label.setWidth(labelBounds.width + iconBounds.width);
                } else {
                    label.setWidth(labelBounds.width);
                }
                label.setHeight(labelBounds.height);
                // We would set the modified flag to false here, but that doesn't exist anymore
                label.setText(labelText);
                mapping.getGraphMap().put(label, labelEditPart);
            } else {
                // add the label to the mapping anyway so it is reset to its reference location
                ElkLabel label = ElkGraphUtil.createLabel(null);
                mapping.getGraphMap().put(label, labelEditPart);
            }
        }
    }
}

Example 39 with ElkLabel

use of org.eclipse.elk.graph.ElkLabel in project elk by eclipse.

the class GmfDiagramLayoutConnector method createPort.

/**
 * Create a port while building the layout graph.
 *
 * @param mapping
 *            the layout mapping
 * @param portEditPart
 *            the port edit part
 * @param nodeEditPart
 *            the parent node edit part
 * @param elknode
 *            the corresponding layout node
 * @return the created port
 */
protected ElkPort createPort(final LayoutMapping mapping, final AbstractBorderItemEditPart portEditPart, final IGraphicalEditPart nodeEditPart, final ElkNode elknode) {
    ElkPort port = ElkGraphUtil.createPort(elknode);
    // set the port's layout, relative to the node position
    Rectangle portBounds = getAbsoluteBounds(portEditPart.getFigure());
    Rectangle nodeBounds = getAbsoluteBounds(nodeEditPart.getFigure());
    double xpos = portBounds.x - nodeBounds.x;
    double ypos = portBounds.y - nodeBounds.y;
    port.setLocation(xpos, ypos);
    port.setDimensions(portBounds.width, portBounds.height);
    // We would set the modified flag to false here, but that doesn't exist anymore
    mapping.getGraphMap().put(port, portEditPart);
    // store all the connections to process them later
    addConnections(mapping, portEditPart);
    // set the port label
    for (Object portChildObj : portEditPart.getChildren()) {
        if (portChildObj instanceof IGraphicalEditPart) {
            IFigure labelFigure = ((IGraphicalEditPart) portChildObj).getFigure();
            String text = null;
            if (labelFigure instanceof WrappingLabel) {
                text = ((WrappingLabel) labelFigure).getText();
            } else if (labelFigure instanceof Label) {
                text = ((Label) labelFigure).getText();
            }
            if (text != null) {
                ElkLabel portLabel = ElkGraphUtil.createLabel(port);
                portLabel.setText(text);
                mapping.getGraphMap().put(portLabel, (IGraphicalEditPart) portChildObj);
                // set the port label's layout
                Rectangle labelBounds = getAbsoluteBounds(labelFigure);
                portLabel.setLocation(labelBounds.x - portBounds.x, labelBounds.y - portBounds.y);
                try {
                    Dimension size = labelFigure.getPreferredSize();
                    portLabel.setDimensions(size.width, size.height);
                } catch (SWTException exception) {
                // ignore exception and leave the label size to (0, 0)
                }
            // We would set the modified flag to false here, but that doesn't exist anymore
            }
        }
    }
    return port;
}

Example 40 with ElkLabel

use of org.eclipse.elk.graph.ElkLabel in project elk by eclipse.

the class GmfDiagramLayoutConnector method buildLayoutGraph.

/**
 * Creates the actual mapping given an edit part which functions as the root for the layout.
 *
 * @param layoutRootPart the layout root edit part
 * @param selection a selection of contained edit parts to process, or {@code null} if the whole
 *          content shall be processed
 * @param workbenchPart the workbench part, or {@code null}
 * @return a layout graph mapping
 */
protected LayoutMapping buildLayoutGraph(final IGraphicalEditPart layoutRootPart, final List<ShapeNodeEditPart> selection, final IWorkbenchPart workbenchPart) {
    LayoutMapping mapping = new LayoutMapping(workbenchPart);
    mapping.setProperty(CONNECTIONS, new LinkedList<ConnectionEditPart>());
    mapping.setParentElement(layoutRootPart);
    // find the diagram edit part
    mapping.setProperty(DIAGRAM_EDIT_PART, getDiagramEditPart(layoutRootPart));
    ElkNode topNode;
    if (layoutRootPart instanceof ShapeNodeEditPart) {
        // start with a specific node as root for layout
        topNode = createNode(mapping, (ShapeNodeEditPart) layoutRootPart, null, null, null);
    } else {
        // start with the whole diagram as root for layout
        topNode = ElkGraphUtil.createGraph();
        Rectangle rootBounds = layoutRootPart.getFigure().getBounds();
        if (layoutRootPart instanceof DiagramEditPart) {
            String labelText = ((DiagramEditPart) layoutRootPart).getDiagramView().getName();
            if (labelText.length() > 0) {
                ElkLabel label = ElkGraphUtil.createLabel(topNode);
                label.setText(labelText);
            }
        } else {
            topNode.setLocation(rootBounds.x, rootBounds.y);
        }
        topNode.setDimensions(rootBounds.width, rootBounds.height);
        mapping.getGraphMap().put(topNode, layoutRootPart);
    }
    mapping.setLayoutGraph(topNode);
    if (selection != null && !selection.isEmpty()) {
        // layout only the selected elements
        double minx = Integer.MAX_VALUE;
        double miny = Integer.MAX_VALUE;
        Maybe<ElkPadding> kinsets = new Maybe<>();
        for (ShapeNodeEditPart editPart : selection) {
            ElkNode node = createNode(mapping, editPart, layoutRootPart, topNode, kinsets);
            minx = Math.min(minx, node.getX());
            miny = Math.min(miny, node.getY());
            buildLayoutGraphRecursively(mapping, editPart, node, editPart);
        }
        mapping.setProperty(COORDINATE_OFFSET, new KVector(minx, miny));
    } else {
        // traverse all children of the layout root part
        buildLayoutGraphRecursively(mapping, layoutRootPart, topNode, layoutRootPart);
    }
    // transform all connections in the selected area
    processConnections(mapping);
    return mapping;
}