Java Code Examples for org.apache.pdfbox.pdmodel.graphics.color.PDColor#getComponents()

/**
 * Sets the stroking color and, if necessary, the stroking color space.
 *
 * @param color Color in a specific color space.
 * @throws IOException If an IO error occurs while writing to the stream.
 */
public void setStrokingColor(PDColor color) throws IOException
{
    if (strokingColorSpaceStack.isEmpty() ||
        strokingColorSpaceStack.peek() != color.getColorSpace())
    {
        writeOperand(getName(color.getColorSpace()));
        writeOperator(OperatorName.STROKING_COLORSPACE);
        setStrokingColorSpaceStack(color.getColorSpace());
    }

    for (float value : color.getComponents())
    {
        writeOperand(value);
    }

    if (color.getColorSpace() instanceof PDPattern)
    {
        writeOperand(color.getPatternName());
    }

    if (color.getColorSpace() instanceof PDPattern ||
        color.getColorSpace() instanceof PDSeparation ||
        color.getColorSpace() instanceof PDDeviceN ||
        color.getColorSpace() instanceof PDICCBased)
    {
        writeOperator(OperatorName.STROKING_COLOR_N);
    }
    else
    {
        writeOperator(OperatorName.STROKING_COLOR);
    }
}
 

/**
 * Sets the non-stroking color and, if necessary, the non-stroking color space.
 *
 * @param color Color in a specific color space.
 * @throws IOException If an IO error occurs while writing to the stream.
 */
public void setNonStrokingColor(PDColor color) throws IOException
{
    if (nonStrokingColorSpaceStack.isEmpty() ||
        nonStrokingColorSpaceStack.peek() != color.getColorSpace())
    {
        writeOperand(getName(color.getColorSpace()));
        writeOperator(OperatorName.NON_STROKING_COLORSPACE);
        setNonStrokingColorSpaceStack(color.getColorSpace());
    }

    for (float value : color.getComponents())
    {
        writeOperand(value);
    }

    if (color.getColorSpace() instanceof PDPattern)
    {
        writeOperand(color.getPatternName());
    }

    if (color.getColorSpace() instanceof PDPattern ||
        color.getColorSpace() instanceof PDSeparation ||
        color.getColorSpace() instanceof PDDeviceN ||
        color.getColorSpace() instanceof PDICCBased)
    {
        writeOperator(OperatorName.NON_STROKING_COLOR_N);
    }
    else
    {
        writeOperator(OperatorName.NON_STROKING_COLOR);
    }
}
 

/**
 * Sets the stroking color and, if necessary, the stroking color space.
 *
 * @param color Color in a specific color space.
 * @throws IOException If an IO error occurs while writing to the stream.
 */
public void setStrokingColor(PDColor color) throws IOException
{
    if (strokingColorSpaceStack.isEmpty() ||
        strokingColorSpaceStack.peek() != color.getColorSpace())
    {
        writeOperand(getName(color.getColorSpace()));
        writeOperator(OperatorName.STROKING_COLORSPACE);
        setStrokingColorSpaceStack(color.getColorSpace());
    }

    for (float value : color.getComponents())
    {
        writeOperand(value);
    }

    if (color.getColorSpace() instanceof PDPattern)
    {
        writeOperand(color.getPatternName());
    }

    if (color.getColorSpace() instanceof PDPattern ||
        color.getColorSpace() instanceof PDSeparation ||
        color.getColorSpace() instanceof PDDeviceN ||
        color.getColorSpace() instanceof PDICCBased)
    {
        writeOperator(OperatorName.STROKING_COLOR_N);
    }
    else
    {
        writeOperator(OperatorName.STROKING_COLOR);
    }
}
 

/**
 * Sets the non-stroking color and, if necessary, the non-stroking color space.
 *
 * @param color Color in a specific color space.
 * @throws IOException If an IO error occurs while writing to the stream.
 */
public void setNonStrokingColor(PDColor color) throws IOException
{
    if (nonStrokingColorSpaceStack.isEmpty() ||
        nonStrokingColorSpaceStack.peek() != color.getColorSpace())
    {
        writeOperand(getName(color.getColorSpace()));
        writeOperator(OperatorName.NON_STROKING_COLORSPACE);
        setNonStrokingColorSpaceStack(color.getColorSpace());
    }

    for (float value : color.getComponents())
    {
        writeOperand(value);
    }

    if (color.getColorSpace() instanceof PDPattern)
    {
        writeOperand(color.getPatternName());
    }

    if (color.getColorSpace() instanceof PDPattern ||
        color.getColorSpace() instanceof PDSeparation ||
        color.getColorSpace() instanceof PDDeviceN ||
        color.getColorSpace() instanceof PDICCBased)
    {
        writeOperator(OperatorName.NON_STROKING_COLOR_N);
    }
    else
    {
        writeOperator(OperatorName.NON_STROKING_COLOR);
    }
}
 

/**
 * Set the stroking color.
 * 
 * <p>
 * The command is only emitted if the color is not null and the number of
 * components is &gt; 0.
 * 
 * @param color The colorspace to write.
 * @throws IOException If there is an error writing to the content stream.
 * @see PDAbstractContentStream#setStrokingColor(PDColor)
 */
public boolean setStrokingColorOnDemand(PDColor color) throws IOException
{
    if (color != null)
    {
        float[] components = color.getComponents();
        if (components.length > 0)
        {
            setStrokingColor(components);
            return true;
        }
    }
    return false;
}
 

/**
 * Set the non stroking color.
 * 
 * <p>
 * The command is only emitted if the color is not null and the number of
 * components is &gt; 0.
 * 
 * @param color The colorspace to write.
 * @throws IOException If there is an error writing to the content stream.
 * @see PDAbstractContentStream#setNonStrokingColor(PDColor)
 */
public boolean setNonStrokingColorOnDemand(PDColor color) throws IOException
{
    if (color != null)
    {
        float[] components = color.getComponents();
        if (components.length > 0)
        {
            setNonStrokingColor(components);
            return true;
        }
    }
    return false;
}
 

@Override
public void generateNormalAppearance()
{
    PDAnnotationMarkup ink = (PDAnnotationMarkup) getAnnotation();
    // PDF spec does not mention /Border for ink annotations, but it is used if /BS is not available
    AnnotationBorder ab = AnnotationBorder.getAnnotationBorder(ink, ink.getBorderStyle());
    PDColor color = ink.getColor();
    if (color == null || color.getComponents().length == 0 || Float.compare(ab.width, 0) == 0)
    {
        return;
    }

    PDAppearanceContentStream cs = null;

    try
    {
        cs = getNormalAppearanceAsContentStream();

        setOpacity(cs, ink.getConstantOpacity());

        cs.setStrokingColor(color);
        if (ab.dashArray != null)
        {
            cs.setLineDashPattern(ab.dashArray, 0);
        }
        cs.setLineWidth(ab.width);

        for (float[] pathArray : ink.getInkList())
        {
            int nPoints = pathArray.length / 2;

            // "When drawn, the points shall be connected by straight lines or curves 
            // in an implementation-dependent way" - we do lines.
            for (int i = 0; i < nPoints; ++i)
            {
                float x = pathArray[i * 2];
                float y = pathArray[i * 2 + 1];

                if (i == 0)
                {
                    cs.moveTo(x, y);
                }
                else
                {
                    cs.lineTo(x, y);
                }
            }
            cs.stroke();
        }
    }
    catch (IOException ex)
    {
        LOG.error(ex);
    }
    finally
    {
        IOUtils.closeQuietly(cs);
    }
}
 

@Override
public void generateNormalAppearance()
{
    PDAnnotationTextMarkup annotation = (PDAnnotationTextMarkup) 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 / 2, rect.getUpperRightX()));
    rect.setUpperRightY(Math.max(maxY + ab.width / 2, rect.getUpperRightY()));
    annotation.setRectangle(rect);

    PDAppearanceContentStream cs = null;

    try
    {
        cs = getNormalAppearanceAsContentStream();

        setOpacity(cs, annotation.getConstantOpacity());

        cs.setStrokingColor(color);
        if (ab.dashArray != null)
        {
            cs.setLineDashPattern(ab.dashArray, 0);
        }
        cs.setLineWidth(ab.width);

        // spec is incorrect
        // https://stackoverflow.com/questions/9855814/pdf-spec-vs-acrobat-creation-quadpoints
        for (int i = 0; i < pathsArray.length / 8; ++i)
        {
            // Adobe doesn't use the lower coordinate for the line, it uses lower + delta / 7.
            // do the math for diagonal annotations with this weird old trick:
            // https://stackoverflow.com/questions/7740507/extend-a-line-segment-a-specific-distance
            float len0 = (float) (Math.sqrt(Math.pow(pathsArray[i * 8] - pathsArray[i * 8 + 4], 2) + 
                                  Math.pow(pathsArray[i * 8 + 1] - pathsArray[i * 8 + 5], 2)));
            float x0 = pathsArray[i * 8 + 4];
            float y0 = pathsArray[i * 8 + 5];
            if (Float.compare(len0, 0) != 0)
            {
                // only if both coordinates are not identical to avoid divide by zero
                x0 += (pathsArray[i * 8] - pathsArray[i * 8 + 4]) / len0 * len0 / 7;
                y0 += (pathsArray[i * 8 + 1] - pathsArray[i * 8 + 5]) / len0 * (len0 / 7);
            }
            float len1 = (float) (Math.sqrt(Math.pow(pathsArray[i * 8 + 2] - pathsArray[i * 8 + 6], 2) + 
                                  Math.pow(pathsArray[i * 8 + 3] - pathsArray[i * 8 + 7], 2)));
            float x1 = pathsArray[i * 8 + 6];
            float y1 = pathsArray[i * 8 + 7];
            if (Float.compare(len1, 0) != 0)
            {
                // only if both coordinates are not identical to avoid divide by zero
                x1 += (pathsArray[i * 8 + 2] - pathsArray[i * 8 + 6]) / len1 * len1 / 7;
                y1 += (pathsArray[i * 8 + 3] - pathsArray[i * 8 + 7]) / len1 * len1 / 7;
            }
            cs.moveTo(x0, y0);
            cs.lineTo(x1, y1);
        }
        cs.stroke();
    }
    catch (IOException ex)
    {
        LOG.error(ex);
    }
    finally
    {
        IOUtils.closeQuietly(cs);
    }
}