Examples with Paragraph org.apache.pivot.wtk.text.Paragraph used on opensource projects

Example 1 with Paragraph

use of org.apache.pivot.wtk.text.Paragraph in project pivot by apache.

the class TextPane method paste.

public void paste() {
    if (document == null) {
        setDocument(new Document());
    }
    Manifest clipboardContent = Clipboard.getContent();
    if (clipboardContent != null && clipboardContent.containsText()) {
        // Paste the string representation of the content
        String text = null;
        try {
            // Replace \r\n with just \n and plain \r with \n instead
            // so we can deal with lines uniformly below.
            text = clipboardContent.getText().replace("\r\n", "\n").replace("\r", "\n");
        } catch (IOException exception) {
        // No-op
        }
        if (text != null && text.length() > 0) {
            // Insert the clipboard contents
            int n = 0;
            int start = selectionStart;
            int tabWidth = ((TextPane.Skin) getSkin()).getTabWidth();
            Node currentNode = document.getDescendantAt(start);
            while (!(currentNode instanceof Paragraph)) {
                currentNode = currentNode.getParent();
            }
            int paragraphStartOffset = start - currentNode.getDocumentOffset();
            bulkOperation = true;
            // If there is only a line fragment here, then just insert it
            int eolIndex = text.indexOf('\n');
            if (eolIndex < 0) {
                if (expandTabs) {
                    n = insertWithTabSubstitution(text, start, paragraphStartOffset, tabWidth);
                } else {
                    insertText(text, start);
                    n = text.length();
                }
            } else {
                int textOffset = 0;
                // Insert each line into place, with a new paragraph following
                while (eolIndex >= 0) {
                    String fragment = text.substring(textOffset, eolIndex);
                    int len;
                    if (expandTabs) {
                        len = insertWithTabSubstitution(fragment, start, paragraphStartOffset, tabWidth);
                    } else {
                        insertText(fragment, start);
                        len = fragment.length();
                    }
                    insertParagraph();
                    n += len + 1;
                    start += len + 1;
                    paragraphStartOffset = 0;
                    textOffset = eolIndex + 1;
                    eolIndex = text.indexOf('\n', textOffset);
                }
                // Now deal with any leftover at end of string
                if (textOffset < text.length()) {
                    String lastFragment = text.substring(textOffset);
                    if (expandTabs) {
                        n += insertWithTabSubstitution(lastFragment, start, paragraphStartOffset, tabWidth);
                    } else {
                        insertText(lastFragment, start);
                        n += lastFragment.length();
                    }
                }
            }
            bulkOperation = false;
            textPaneCharacterListeners.charactersInserted(this, start, n);
        }
    }
}

Example 2 with Paragraph

use of org.apache.pivot.wtk.text.Paragraph in project pivot by apache.

the class TextPane method insertParagraph.

public void insertParagraph() {
    checkDocumentExists();
    if (selectionLength > 0) {
        removeDocumentRange(selectionStart, selectionLength);
    }
    // Walk up the tree until we find a paragraph
    Node descendant = document.getDescendantAt(selectionStart);
    while (!(descendant instanceof Paragraph)) {
        descendant = descendant.getParent();
    }
    // Split the paragraph at the insertion point
    Paragraph leadingSegment = (Paragraph) descendant;
    int offset = selectionStart - leadingSegment.getDocumentOffset();
    int characterCount = leadingSegment.getCharacterCount() - offset;
    Paragraph trailingSegment = (Paragraph) leadingSegment.removeRange(offset, characterCount);
    Element parent = leadingSegment.getParent();
    int index = parent.indexOf(leadingSegment);
    parent.insert(trailingSegment, index + 1);
    // Set the selection start to the character following the insertion
    setSelection(selectionStart + 1, selectionLength);
}

Example 3 with Paragraph

use of org.apache.pivot.wtk.text.Paragraph in project pivot by apache.

the class TextPane method addToText.

/**
 * Add the text from the given element (and its children) to the given buffer,
 * respecting the range of characters to be included.
 *
 * @param text The buffer we're building.
 * @param element The current element in the document.
 * @param includeSpan The range of text to be included (in document-relative
 * coordinates).
 */
private void addToText(StringBuilder text, Element element, Span includeSpan) {
    Span elementSpan = element.getDocumentSpan();
    Span elementIntersection = elementSpan.intersect(includeSpan);
    if (elementIntersection != null) {
        for (Node node : element) {
            if (node instanceof Element) {
                addToText(text, (Element) node, includeSpan);
            } else {
                Span nodeSpan = node.getDocumentSpan();
                Span nodeIntersection = nodeSpan.intersect(includeSpan);
                if (nodeIntersection != null) {
                    Span currentSpan = nodeIntersection.offset(-nodeSpan.start);
                    if (node instanceof TextNode) {
                        text.append(((TextNode) node).getCharacters(currentSpan));
                    } else if (node instanceof ComponentNode) {
                        text.append(((ComponentNode) node).getCharacters(currentSpan));
                    }
                // TODO: anything more that could/should be handled?
                // lists for instance???
                }
            }
        }
        if (element instanceof Paragraph && elementIntersection.end == elementSpan.end) {
            // TODO: unclear if this is included in the character count for a paragraph or not
            // or what that means for the intersection range above
            text.append('\n');
        }
    }
}

Example 4 with Paragraph

use of org.apache.pivot.wtk.text.Paragraph in project pivot by apache.

the class TextPane method setText.

public void setText(Reader textReader) throws IOException {
    Utils.checkNull(textReader, "Reader");
    int tabPosition = 0;
    int tabWidth = ((TextPane.Skin) getSkin()).getTabWidth();
    Document doc = new Document();
    StringBuilder text = new StringBuilder();
    int c = textReader.read();
    while (c != -1) {
        // Deal with the various forms of line endings:  CR only, LF only or CR,LF
        if (c == '\r') {
            int c2 = textReader.read();
            if (c2 == -1) {
                break;
            } else if (c2 == '\n') {
                // Only add the \n (the paragraph separator)
                c = c2;
            } else {
                // Change the paragraph separator to \n instead
                // but push back the last character read
                Paragraph paragraph = new Paragraph(text.toString());
                doc.add(paragraph);
                text.setLength(0);
                tabPosition = 0;
                c = c2;
                continue;
            }
        }
        if (c == '\n') {
            Paragraph paragraph = new Paragraph(text.toString());
            doc.add(paragraph);
            text.setLength(0);
            tabPosition = 0;
        } else if (c == '\t') {
            if (expandTabs) {
                int spaces = tabWidth - (tabPosition % tabWidth);
                for (int i = 0; i < spaces; i++) {
                    text.append(' ');
                }
                tabPosition += spaces;
            } else {
                text.append('\t');
            }
        } else {
            text.append((char) c);
            tabPosition++;
        }
        c = textReader.read();
    }
    if (text.length() != 0) {
        Paragraph paragraph = new Paragraph(text.toString());
        doc.add(paragraph);
    }
    setDocument(doc);
}

Example 5 with Paragraph

use of org.apache.pivot.wtk.text.Paragraph in project pivot by apache.

the class TextPaneSkinParagraphView method childLayout.

@Override
protected void childLayout(int breakWidth) {
    // Break the views into multiple rows
    Paragraph paragraph = (Paragraph) getNode();
    rows = new ArrayList<>();
    int offset = 0;
    ParagraphChildLayouter layouter = new ParagraphChildLayouter();
    Row row = new Row();
    for (TextPaneSkinNodeView nodeView : this) {
        nodeView.layout(Math.max(breakWidth - (row.width + PARAGRAPH_TERMINATOR_WIDTH), 0));
        int nodeViewWidth = nodeView.getWidth();
        if (row.width + nodeViewWidth > breakWidth && row.width > 0) {
            // The view is too big to fit in the remaining space,
            // and it is not the only view in this row
            rows.add(row);
            layouter.endRow(row);
            row = new Row();
            row.width = 0;
        }
        // Add the view to the row
        RowSegment segment = new RowSegment(nodeView, offset);
        row.rowSegments.add(segment);
        layouter.startSegment(segment);
        offset += nodeView.getCharacterCount();
        row.width += nodeViewWidth;
        // If the view was split into multiple views, add them to their own rows
        nodeView = getNext(nodeView);
        while (nodeView != null) {
            rows.add(row);
            layouter.endRow(row);
            row = new Row();
            nodeView.layout(breakWidth);
            segment = new RowSegment(nodeView, offset);
            row.rowSegments.add(segment);
            layouter.startSegment(segment);
            offset += nodeView.getCharacterCount();
            row.width = nodeView.getWidth();
            nodeView = getNext(nodeView);
        }
    }
    // Add the last row
    if (row.rowSegments.getLength() > 0) {
        rows.add(row);
        layouter.endRow(row);
    }
    // calculate paragraph width and adjust for alignment
    layouter.end(paragraph, rows);
    // Recalculate terminator bounds
    FontRenderContext fontRenderContext = Platform.getFontRenderContext();
    LineMetrics lm = getTextPaneSkin().getFont().getLineMetrics("", 0, 0, fontRenderContext);
    int terminatorHeight = (int) Math.ceil(lm.getHeight());
    int terminatorY;
    if (getCharacterCount() == 1) {
        // The terminator is the only character in this paragraph
        terminatorY = 0;
    } else {
        terminatorY = layouter.rowY - terminatorHeight;
    }
    terminatorBounds = new Bounds(layouter.x, terminatorY, PARAGRAPH_TERMINATOR_WIDTH, terminatorHeight);
    // Ensure that the paragraph is visible even when empty
    layouter.paragraphWidth += terminatorBounds.width;
    int height = Math.max(layouter.rowY, terminatorBounds.height);
    setSize(layouter.paragraphWidth, height);
}