Examples with TextPresentation org.eclipse.jface.text.TextPresentation used on opensource projects

Example 1 with TextPresentation

use of org.eclipse.jface.text.TextPresentation in project eclipse.platform.text by eclipse.

the class BrowserInformationControl method computeSizeHint.

@Override
public Point computeSizeHint() {
    Point sizeConstraints = getSizeConstraints();
    Rectangle trim = computeTrim();
    int height = trim.height;
    // FIXME: The HTML2TextReader does not render <p> like a browser.
    // Instead of inserting an empty line, it just adds a single line break.
    // Furthermore, the indentation of <dl><dd> elements is too small (e.g with a long @see line)
    TextPresentation presentation = new TextPresentation();
    String text;
    try (HTML2TextReader reader = new HTML2TextReader(new StringReader(fInput.getHtml()), presentation)) {
        text = reader.getString();
    } catch (IOException e) {
        // $NON-NLS-1$
        text = "";
    }
    fTextLayout.setText(text);
    fTextLayout.setWidth(sizeConstraints == null ? SWT.DEFAULT : sizeConstraints.x - trim.width);
    Iterator<StyleRange> iter = presentation.getAllStyleRangeIterator();
    while (iter.hasNext()) {
        StyleRange sr = iter.next();
        if (sr.fontStyle == SWT.BOLD)
            fTextLayout.setStyle(fBoldStyle, sr.start, sr.start + sr.length - 1);
    }
    // does not return minimum width, see https://bugs.eclipse.org/bugs/show_bug.cgi?id=217446
    Rectangle bounds = fTextLayout.getBounds();
    int lineCount = fTextLayout.getLineCount();
    int textWidth = 0;
    for (int i = 0; i < lineCount; i++) {
        Rectangle rect = fTextLayout.getLineBounds(i);
        int lineWidth = rect.x + rect.width;
        if (i == 0)
            lineWidth += fInput.getLeadingImageWidth();
        textWidth = Math.max(textWidth, lineWidth);
    }
    bounds.width = textWidth;
    // $NON-NLS-1$
    fTextLayout.setText("");
    int minWidth = bounds.width;
    height = height + bounds.height;
    // Add some air to accommodate for different browser renderings
    minWidth += 15;
    height += 15;
    // Apply max size constraints
    if (sizeConstraints != null) {
        if (sizeConstraints.x != SWT.DEFAULT)
            minWidth = Math.min(sizeConstraints.x, minWidth + trim.width);
        if (sizeConstraints.y != SWT.DEFAULT)
            height = Math.min(sizeConstraints.y, height);
    }
    // Ensure minimal size
    int width = Math.max(MIN_WIDTH, minWidth);
    height = Math.max(MIN_HEIGHT, height);
    return new Point(width, height);
}

Example 2 with TextPresentation

use of org.eclipse.jface.text.TextPresentation in project eclipse.platform.text by eclipse.

the class HTML2TextReaderTest method verify.

/**
 * @param input input
 * @param expectedOutput expected output
 * @param styleRangeCount count
 * @throws IOException test failure
 * @deprecated pass actual style ranges
 */
@Deprecated
private void verify(String input, String expectedOutput, int styleRangeCount) throws IOException {
    Reader reader = new StringReader(input);
    TextPresentation textPresentation = new TextPresentation();
    String result;
    try (HTML2TextReader htmlReader = new HTML2TextReader(reader, textPresentation)) {
        result = htmlReader.getString();
    }
    if (DEBUG)
        System.out.println("<" + result + "/>");
    assertEquals(expectedOutput, result);
    Iterator<StyleRange> styleRangeIterator = textPresentation.getAllStyleRangeIterator();
    List<StyleRange> ranges = new ArrayList<>();
    while (styleRangeIterator.hasNext()) {
        ranges.add(styleRangeIterator.next());
    }
    assertEquals("Incorrect number of style ranges", styleRangeCount, ranges.size());
    Collections.sort(ranges, (r1, r2) -> r1.start - r2.start);
    for (int i = 0; i < ranges.size() - 1; i++) {
        StyleRange range1 = ranges.get(i);
        StyleRange range2 = ranges.get(i + 1);
        if (range1.start + range1.length > range2.start) {
            assertTrue("StyleRanges overlap", false);
        }
    }
}

Example 3 with TextPresentation

use of org.eclipse.jface.text.TextPresentation in project eclipse.platform.text by eclipse.

the class TextPresentationTest method setUpTextPresentation.

private void setUpTextPresentation() {
    fTextPresentation = new TextPresentation();
    fTextPresentation.setDefaultStyleRange(createStyleRange(0, 140, NORMAL));
    for (int i = 0; i < fAllRanges.length; i++) fTextPresentation.addStyleRange(fAllRanges[i]);
}

Example 4 with TextPresentation

use of org.eclipse.jface.text.TextPresentation in project eclipse.platform.text by eclipse.

the class PresentationReconciler method createPresentation.

/**
 * Constructs a "repair description" for the given damage and returns this
 * description as a text presentation. For this, it queries the partitioning
 * of the damage region and asks the appropriate presentation repairer for
 * each partition to construct the "repair description" for this partition.
 *
 * @param damage the damage to be repaired
 * @param document the document whose presentation must be repaired
 * @return the presentation repair description as text presentation or
 *         <code>null</code> if the partitioning could not be computed
 */
protected TextPresentation createPresentation(IRegion damage, IDocument document) {
    try {
        if (fRepairers == null || fRepairers.isEmpty()) {
            TextPresentation presentation = new TextPresentation(damage, 100);
            presentation.setDefaultStyleRange(new StyleRange(damage.getOffset(), damage.getLength(), null, null));
            return presentation;
        }
        TextPresentation presentation = new TextPresentation(damage, 1000);
        ITypedRegion[] partitioning = TextUtilities.computePartitioning(document, getDocumentPartitioning(), damage.getOffset(), damage.getLength(), false);
        for (ITypedRegion r : partitioning) {
            IPresentationRepairer repairer = getRepairer(r.getType());
            if (repairer != null)
                repairer.createPresentation(presentation, r);
        }
        return presentation;
    } catch (BadLocationException x) {
        return null;
    }
}

Example 5 with TextPresentation

use of org.eclipse.jface.text.TextPresentation in project eclipse.platform.text by eclipse.

the class ContextInformationPopup method internalShowContextFrame.

/**
 * Shows the given context frame.
 *
 * @param frame the frame to display
 * @param initial <code>true</code> if this is the first frame to be displayed
 * @since 2.0
 */
private void internalShowContextFrame(ContextFrame frame, boolean initial) {
    fContentAssistSubjectControlAdapter.installValidator(frame);
    if (frame.fPresenter != null) {
        if (fTextPresentation == null)
            fTextPresentation = new TextPresentation();
        fContentAssistSubjectControlAdapter.installContextInformationPresenter(frame);
        frame.fPresenter.updatePresentation(frame.fOffset, fTextPresentation);
    }
    createContextInfoPopup();
    fContextInfoText.setText(frame.fInformation.getInformationDisplayString());
    if (fTextPresentation != null)
        TextPresentation.applyTextPresentation(fTextPresentation, fContextInfoText);
    resize(frame.fVisibleOffset);
    if (initial) {
        if (fContentAssistant.addContentAssistListener(this, ContentAssistant.CONTEXT_INFO_POPUP)) {
            if (fContentAssistSubjectControlAdapter.getControl() != null) {
                fTextWidgetSelectionListener = new SelectionAdapter() {

                    @Override
                    public void widgetSelected(SelectionEvent e) {
                        validateContextInformation();
                    }
                };
                fContentAssistSubjectControlAdapter.addSelectionListener(fTextWidgetSelectionListener);
            }
            fContentAssistant.addToLayout(this, fContextInfoPopup, ContentAssistant.LayoutManager.LAYOUT_CONTEXT_INFO_POPUP, frame.fVisibleOffset);
            fContextInfoPopup.setVisible(true);
        }
    } else {
        fContentAssistant.layout(ContentAssistant.LayoutManager.LAYOUT_CONTEXT_INFO_POPUP, frame.fVisibleOffset);
    }
}