Example usage for org.apache.pdfbox.pdmodel.graphics.state PDExtendedGraphicsState setNonStrokingAlphaConstant

Introduction

In this page you can find the example usage for org.apache.pdfbox.pdmodel.graphics.state PDExtendedGraphicsState setNonStrokingAlphaConstant.

Prototype

public void setNonStrokingAlphaConstant(Float alpha) 

Source Link

Document

This will get the non stroking alpha constant.

Usage

From source file:helper.pdfpreprocessing.pdf.TextHighlight.java

License:Apache License

public void highlight(final Pattern searchText, final Pattern markingPattern, Color color, int pageNr,
        boolean withId, String comment) {
    if (textCache == null || document == null) {
        throw new IllegalArgumentException("TextCache was not initialized");
    }/*w  w  w . j a va  2s .  c om*/

    try {
        boolean found = false;

        final PDPage page = document.getPages().get(pageNr - 1);
        PDPageContentStream contentStream = new PDPageContentStream(document, page,
                PDPageContentStream.AppendMode.APPEND, true);

        PDExtendedGraphicsState graphicsState = new PDExtendedGraphicsState();
        graphicsState.setNonStrokingAlphaConstant(0.5f);

        contentStream.setGraphicsStateParameters(graphicsState);

        for (Match searchMatch : textCache.match(pageNr, searchText)) {
            if (textCache.match(searchMatch.positions, markingPattern).size() > 0) {
                for (Match markingMatch : textCache.match(searchMatch.positions, markingPattern)) {
                    if (markupMatch(color, contentStream, markingMatch, 10, withId, page, comment, false)) {
                        found = true;
                    }
                }
            } else {
                System.out
                        .println("Cannot highlight: " + markingPattern.pattern() + " on page " + (pageNr - 1));
            }
            if (found) {
                break;
            }
        }
        contentStream.close();
    } catch (Exception e) {
        e.printStackTrace();
    } catch (Error e1) {
        e1.printStackTrace();
        throw e1;
    }
}

---

From source file:helper.pdfpreprocessing.pdf.TextHighlight.java

License:Apache License

public void highlight(int startIndex, int stopIndex, Color color, int pageNr, int boxHeight,
        boolean hasLineOffset, boolean withId, String comment, boolean commentOnly) {
    if (textCache == null || document == null) {
        throw new IllegalArgumentException("TextCache was not initialized");
    }//from w w  w .j a va2 s .  com
    try {
        final PDPage page = document.getPages().get(pageNr - 1);
        PDPageContentStream contentStream = new PDPageContentStream(document, page,
                PDPageContentStream.AppendMode.APPEND, true);

        PDExtendedGraphicsState graphicsState = new PDExtendedGraphicsState();
        graphicsState.setNonStrokingAlphaConstant(0.5f);

        contentStream.setGraphicsStateParameters(graphicsState);

        List<TextPosition> pos = textCache.getTextPositions(pageNr);
        int numberOfLines = 0;
        if (hasLineOffset) {
            numberOfLines = textCache.getText(pageNr).substring(0, stopIndex).split("\\n").length - 1;
        }
        pos = pos.subList(Math.min(numberOfLines + startIndex, pos.size()),
                Math.min(numberOfLines + stopIndex, pos.size()));
        Match m = new Match(pageNr + "-" + startIndex, pos);
        markupMatch(color, contentStream, m, boxHeight, withId, page, comment, commentOnly);

        contentStream.close();
    } catch (Exception e) {
        e.printStackTrace();
    } catch (Error e1) {
        e1.printStackTrace();
        throw e1;
    }
}

---

From source file:info.informationsea.venn.graphics.VennDrawPDF.java

License:Open Source License

public static <T> void draw(VennFigure<T> vennFigure, PDDocument doc, PDPage page, PDFont font,
        PDRectangle rect) throws IOException {
    PDPageContentStream contents = new PDPageContentStream(doc, page);

    Rectangle2D drawRect = vennFigure.drawRect(str -> stringBoundingBox(font, str, FONT_SIZE));
    PointConverter.JoinedConverter pointConverter = new PointConverter.JoinedConverter();
    pointConverter//from  ww  w. j  a v a2  s .c  om
            .addLast(new PointConverter.Translate(-drawRect.getMinX() + MARGIN, -drawRect.getMinY() + MARGIN));
    pointConverter.addLast(new PointConverter.Scale(1, -1));
    pointConverter.addLast(new PointConverter.Translate(0, rect.getHeight()));

    // fill first
    for (VennFigure.Shape<T> shape : vennFigure.getShapes()) {
        if (shape instanceof VennFigure.Oval) {
            VennFigure.Oval<T> oval = (VennFigure.Oval<T>) shape;

            Color fillColor = VennDrawGraphics2D.decodeColor(oval.getColor());
            if (fillColor.getAlpha() == 0)
                continue;

            //COSName graphicsStateName = page.getResources().add(graphicsState);

            List<VennFigure.Point> polygon = oval.toPolygon();

            VennFigure.Point converted = pointConverter.convert(polygon.get(0));
            contents.moveTo((float) converted.getX(), (float) converted.getY());
            polygon.add(polygon.remove(0)); // move to last
            for (VennFigure.Point p : polygon) {
                converted = pointConverter.convert(p);
                contents.lineTo((float) converted.getX(), (float) converted.getY());
            }

            if (fillColor.getAlpha() != 255) {
                PDExtendedGraphicsState graphicsState = new PDExtendedGraphicsState();
                graphicsState.setNonStrokingAlphaConstant(fillColor.getAlpha() / 255.f);
                contents.saveGraphicsState();
                contents.setGraphicsStateParameters(graphicsState);
            }

            contents.setNonStrokingColor(fillColor);
            contents.fill();

            if (fillColor.getAlpha() != 255) {
                contents.restoreGraphicsState();
            }

        }
    }

    for (VennFigure.Shape<T> shape : vennFigure.getShapes()) {
        if (shape instanceof VennFigure.Oval) {
            VennFigure.Oval<T> oval = (VennFigure.Oval<T>) shape;
            List<VennFigure.Point> polygon = oval.toPolygon();

            VennFigure.Point converted = pointConverter.convert(polygon.get(0));
            contents.moveTo((float) converted.getX(), (float) converted.getY());
            polygon.add(polygon.remove(0)); // move to last
            for (VennFigure.Point p : polygon) {
                converted = pointConverter.convert(p);
                contents.lineTo((float) converted.getX(), (float) converted.getY());
            }

            contents.setNonStrokingColor(Color.BLACK);
            contents.stroke();
        } else if (shape instanceof VennFigure.Text) {
            VennFigure.Text<T> text = (VennFigure.Text<T>) shape;

            Rectangle2D boundingBox = stringBoundingBox(font, text.getText(), FONT_SIZE);
            VennFigure.Point converted = pointConverter.convert(text.getCenter());

            float xOffset;
            switch (text.getJust()) {
            case CENTER:
                xOffset = (float) (-boundingBox.getWidth() / 2);
                break;
            case RIGHT:
                xOffset = (float) (-boundingBox.getWidth());
                break;
            default:
                xOffset = 0;
                break;
            }

            contents.beginText();
            contents.setNonStrokingColor(Color.BLACK);
            contents.setFont(font, FONT_SIZE);
            contents.newLineAtOffset((float) (converted.getX() + xOffset),
                    (float) (converted.getY() - boundingBox.getHeight() / 2));
            contents.showText(text.getText());
            contents.endText();
        }
    }

    contents.saveGraphicsState();
    contents.close();
}

---