Examples with BlockFlow org.eclipse.draw2d.text.BlockFlow used on opensource projects

Example 1 with BlockFlow

use of org.eclipse.draw2d.text.BlockFlow in project knime-core by knime.

the class NodeAnnotationFigure method newContent.

/**
 * @param annotation the new annotation content
 */
public void newContent(final Annotation annotation) {
    boolean isNodeAnnotation = (annotation instanceof NodeAnnotation);
    String text;
    AnnotationData.StyleRange[] sr;
    if (AnnotationEditPart.isDefaultNodeAnnotation(annotation)) {
        text = AnnotationEditPart.getAnnotationText(annotation);
        sr = new AnnotationData.StyleRange[0];
    } else {
        text = annotation.getText();
        if (annotation.getStyleRanges() != null) {
            sr = Arrays.copyOf(annotation.getStyleRanges(), annotation.getStyleRanges().length);
        } else {
            sr = new AnnotationData.StyleRange[0];
        }
    }
    Arrays.sort(sr, new Comparator<AnnotationData.StyleRange>() {

        /**
         * {@inheritDoc}
         */
        @Override
        public int compare(final AnnotationData.StyleRange o1, final AnnotationData.StyleRange o2) {
            if (o1.getStart() == o2.getStart()) {
                NodeLogger.getLogger(NodeAnnotationFigure.class).error("Ranges overlap");
                return 0;
            } else {
                return o1.getStart() < o2.getStart() ? -1 : 1;
            }
        }
    });
    Color bg = AnnotationEditPart.RGBintToColor(annotation.getBgColor());
    setBackgroundColor(bg);
    m_page.setBackgroundColor(bg);
    if (isNodeAnnotation && AnnotationEditPart.DEFAULT_BG_NODE.equals(bg)) {
        // node annotation are white if
        setOpaque(false);
    } else {
        setOpaque(true);
    }
    int i = 0;
    List<TextFlow> segments = new ArrayList<TextFlow>(sr.length);
    // in old flow annotations didn't store the font if system default was used. New annotations always store font
    // info. For backward compatibility use the system font if no font is specified here.
    final Font defaultFont;
    if (isNodeAnnotation) {
        defaultFont = AnnotationEditPart.getNodeAnnotationDefaultFont();
    } else if (annotation.getVersion() < AnnotationData.VERSION_20151012) {
        defaultFont = FontStore.INSTANCE.getSystemDefaultFont();
    } else if (annotation.getVersion() < AnnotationData.VERSION_20151123) {
        defaultFont = AnnotationEditPart.getWorkflowAnnotationDefaultFont();
    } else {
        if (annotation.getDefaultFontSize() < 0) {
            defaultFont = AnnotationEditPart.getWorkflowAnnotationDefaultFont();
        } else {
            defaultFont = AnnotationEditPart.getWorkflowAnnotationDefaultFont(annotation.getDefaultFontSize());
        }
    }
    for (AnnotationData.StyleRange r : sr) {
        // create text from last range to beginning of this range
        if (i < r.getStart()) {
            String noStyle = text.substring(i, r.getStart());
            if (isNodeAnnotation) {
                segments.add(getNodeAnnotationSystemDefaultStyled(noStyle, defaultFont, bg));
            } else {
                segments.add(getWorkflowAnnotationSystemDefaultStyled(noStyle, defaultFont, bg));
            }
            i = r.getStart();
        }
        String styled = text.substring(i, r.getStart() + r.getLength());
        segments.add(getStyled(styled, r, bg, defaultFont));
        i = r.getStart() + r.getLength();
    }
    if (i < text.length()) {
        String noStyle = text.substring(i, text.length());
        if (isNodeAnnotation) {
            segments.add(getNodeAnnotationSystemDefaultStyled(noStyle, defaultFont, bg));
        } else {
            segments.add(getWorkflowAnnotationSystemDefaultStyled(noStyle, defaultFont, bg));
        }
    }
    BlockFlow bf = new BlockFlow();
    BlockFlowLayout bfl = new BlockFlowLayout(bf);
    bfl.setContinueOnSameLine(true);
    bf.setLayoutManager(bfl);
    int position;
    switch(annotation.getAlignment()) {
        case CENTER:
            position = PositionConstants.CENTER;
            break;
        case RIGHT:
            position = PositionConstants.RIGHT;
            break;
        default:
            position = PositionConstants.LEFT;
    }
    bf.setHorizontalAligment(position);
    bf.setOrientation(SWT.LEFT_TO_RIGHT);
    bf.setBackgroundColor(bg);
    for (TextFlow tf : segments) {
        bf.add(tf);
    }
    m_page.removeAll();
    m_page.add(bf);
    m_page.setVisible(true);
    revalidate();
}