Examples with PDAnnotationUnderline org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationUnderline used on opensource projects

Example 1 with PDAnnotationUnderline

use of org.apache.pdfbox.pdmodel.interactive.annotation.PDAnnotationUnderline in project pdfbox by apache.

the class PDUnderlineAppearanceHandler method generateNormalAppearance.

@Override
public void generateNormalAppearance() {
    PDAnnotationUnderline annotation = (PDAnnotationUnderline) getAnnotation();
    PDRectangle rect = annotation.getRectangle();
    float[] pathsArray = annotation.getQuadPoints();
    if (pathsArray == null) {
        return;
    }
    AnnotationBorder ab = AnnotationBorder.getAnnotationBorder(annotation, annotation.getBorderStyle());
    PDColor color = annotation.getColor();
    if (color == null || color.getComponents().length == 0) {
        return;
    }
    if (Float.compare(ab.width, 0) == 0) {
        // value found in adobe reader
        ab.width = 1.5f;
    }
    // Adjust rectangle even if not empty, see PLPDF.com-MarkupAnnotations.pdf
    // TODO in a class structure this should be overridable
    // this is similar to polyline but different data type
    // all coordinates (unlike painting) are used because I'm lazy
    float minX = Float.MAX_VALUE;
    float minY = Float.MAX_VALUE;
    float maxX = Float.MIN_VALUE;
    float maxY = Float.MIN_VALUE;
    for (int i = 0; i < pathsArray.length / 2; ++i) {
        float x = pathsArray[i * 2];
        float y = pathsArray[i * 2 + 1];
        minX = Math.min(minX, x);
        minY = Math.min(minY, y);
        maxX = Math.max(maxX, x);
        maxY = Math.max(maxY, y);
    }
    rect.setLowerLeftX(Math.min(minX - ab.width / 2, rect.getLowerLeftX()));
    rect.setLowerLeftY(Math.min(minY - ab.width / 2, rect.getLowerLeftY()));
    rect.setUpperRightX(Math.max(maxX + ab.width, rect.getUpperRightX()));
    rect.setUpperRightY(Math.max(maxY + ab.width, rect.getUpperRightY()));
    annotation.setRectangle(rect);
    try {
        try (PDAppearanceContentStream cs = getNormalAppearanceAsContentStream()) {
            handleOpacity(annotation.getConstantOpacity());
            cs.setStrokingColor(color);
            if (ab.dashArray != null) {
                cs.setLineDashPattern(ab.dashArray, 0);
            }
            cs.setLineWidth(ab.width);
            // https://stackoverflow.com/questions/9855814/pdf-spec-vs-acrobat-creation-quadpoints
            for (int i = 0; i < pathsArray.length / 8; ++i) {
                // only lower coords are used
                cs.moveTo(pathsArray[i * 8 + 4], pathsArray[i * 8 + 5]);
                cs.lineTo(pathsArray[i * 8 + 6], pathsArray[i * 8 + 7]);
            }
            cs.stroke();
        }
    } catch (IOException ex) {
        LOG.error(ex);
    }
}