Examples with TextAlign org.apache.poi.sl.usermodel.TextParagraph.TextAlign used on opensource projects

Example 1 with TextAlign

use of org.apache.poi.sl.usermodel.TextParagraph.TextAlign in project poi by apache.

the class DrawTextParagraph method draw.

@Override
public void draw(Graphics2D graphics) {
    if (lines.isEmpty()) {
        return;
    }
    double penY = y;
    boolean firstLine = true;
    int indentLevel = paragraph.getIndentLevel();
    Double leftMargin = paragraph.getLeftMargin();
    if (leftMargin == null) {
        // if the marL attribute is omitted, then a value of 347663 is implied
        leftMargin = Units.toPoints(347663L * indentLevel);
    }
    Double indent = paragraph.getIndent();
    if (indent == null) {
        indent = Units.toPoints(347663L * indentLevel);
    }
    if (isHSLF()) {
        // special handling for HSLF
        indent -= leftMargin;
    }
    //        Double rightMargin = paragraph.getRightMargin();
    //        if (rightMargin == null) {
    //            rightMargin = 0d;
    //        }
    //The vertical line spacing
    Double spacing = paragraph.getLineSpacing();
    if (spacing == null) {
        spacing = 100d;
    }
    for (DrawTextFragment line : lines) {
        double penX;
        if (firstLine) {
            if (!isEmptyParagraph()) {
                // TODO: find out character style for empty, but bulleted/numbered lines
                bullet = getBullet(graphics, line.getAttributedString().getIterator());
            }
            if (bullet != null) {
                bullet.setPosition(x + leftMargin + indent, penY);
                bullet.draw(graphics);
                // don't let text overlay the bullet and advance by the bullet width
                double bulletWidth = bullet.getLayout().getAdvance() + 1;
                penX = x + Math.max(leftMargin, leftMargin + indent + bulletWidth);
            } else {
                penX = x + leftMargin;
            }
        } else {
            penX = x + leftMargin;
        }
        Rectangle2D anchor = DrawShape.getAnchor(graphics, paragraph.getParentShape());
        // Insets are already applied on DrawTextShape.drawContent
        // but (outer) anchor need to be adjusted
        Insets2D insets = paragraph.getParentShape().getInsets();
        double leftInset = insets.left;
        double rightInset = insets.right;
        TextAlign ta = paragraph.getTextAlign();
        if (ta == null) {
            ta = TextAlign.LEFT;
        }
        switch(ta) {
            case CENTER:
                penX += (anchor.getWidth() - line.getWidth() - leftInset - rightInset - leftMargin) / 2;
                break;
            case RIGHT:
                penX += (anchor.getWidth() - line.getWidth() - leftInset - rightInset);
                break;
            default:
                break;
        }
        line.setPosition(penX, penY);
        line.draw(graphics);
        if (spacing > 0) {
            // If linespacing >= 0, then linespacing is a percentage of normal line height.
            penY += spacing * 0.01 * line.getHeight();
        } else {
            // negative value means absolute spacing in points
            penY += -spacing;
        }
        firstLine = false;
    }
    y = penY - y;
}

Example 2 with TextAlign

use of org.apache.poi.sl.usermodel.TextParagraph.TextAlign in project poi by apache.

the class DrawTextParagraph method breakText.

/**
     * break text into lines, each representing a line of text that fits in the wrapping width
     *
     * @param graphics The drawing context for computing text-lengths.
     */
protected void breakText(Graphics2D graphics) {
    lines.clear();
    DrawFactory fact = DrawFactory.getInstance(graphics);
    StringBuilder text = new StringBuilder();
    AttributedString at = getAttributedString(graphics, text);
    boolean emptyParagraph = ("".equals(text.toString().trim()));
    AttributedCharacterIterator it = at.getIterator();
    LineBreakMeasurer measurer = new LineBreakMeasurer(it, graphics.getFontRenderContext());
    for (; ; ) {
        int startIndex = measurer.getPosition();
        // add a pixel to compensate rounding errors
        double wrappingWidth = getWrappingWidth(lines.size() == 0, graphics) + 1;
        // shape width can be smaller that the sum of insets (this was proved by a test file)
        if (wrappingWidth < 0) {
            wrappingWidth = 1;
        }
        int nextBreak = text.indexOf("\n", startIndex + 1);
        if (nextBreak == -1) {
            nextBreak = it.getEndIndex();
        }
        TextLayout layout = measurer.nextLayout((float) wrappingWidth, nextBreak, true);
        if (layout == null) {
            // layout can be null if the entire word at the current position
            // does not fit within the wrapping width. Try with requireNextWord=false.
            layout = measurer.nextLayout((float) wrappingWidth, nextBreak, false);
        }
        if (layout == null) {
            // exit if can't break any more
            break;
        }
        int endIndex = measurer.getPosition();
        // skip over new line breaks (we paint 'clear' text runs not starting or ending with \n)
        if (endIndex < it.getEndIndex() && text.charAt(endIndex) == '\n') {
            measurer.setPosition(endIndex + 1);
        }
        TextAlign hAlign = paragraph.getTextAlign();
        if (hAlign == TextAlign.JUSTIFY || hAlign == TextAlign.JUSTIFY_LOW) {
            layout = layout.getJustifiedLayout((float) wrappingWidth);
        }
        AttributedString str = (emptyParagraph) ? // we will not paint empty paragraphs
        null : new AttributedString(it, startIndex, endIndex);
        DrawTextFragment line = fact.getTextFragment(layout, str);
        lines.add(line);
        maxLineHeight = Math.max(maxLineHeight, line.getHeight());
        if (endIndex == it.getEndIndex()) {
            break;
        }
    }
    rawText = text.toString();
}