Examples with PDExtendedGraphicsState com.tom_roush.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState used on opensource projects

Example 6 with PDExtendedGraphicsState

use of com.tom_roush.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState in project PdfBox-Android by TomRoush.

the class PDAbstractAppearanceHandler method setOpacity.

void setOpacity(PDAppearanceContentStream contentStream, float opacity) throws IOException {
    if (opacity < 1) {
        PDExtendedGraphicsState gs = new PDExtendedGraphicsState();
        gs.setStrokingAlphaConstant(opacity);
        gs.setNonStrokingAlphaConstant(opacity);
        contentStream.setGraphicsStateParameters(gs);
    }
}

Example 7 with PDExtendedGraphicsState

use of com.tom_roush.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState in project PdfBox-Android by TomRoush.

the class PDHighlightAppearanceHandler method generateNormalAppearance.

@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;
    }
    // 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
    // TODO padding should consider the curves too; needs to know in advance where the curve is
    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);
    }
    // get the delta used for curves and use it for padding
    float maxDelta = 0;
    for (int i = 0; i < pathsArray.length / 8; ++i) {
        // one of the two is 0, depending whether the rectangle is
        // horizontal or vertical
        // if it is diagonal then... uh...
        float delta = Math.max((pathsArray[i + 0] - pathsArray[i + 4]) / 4, (pathsArray[i + 1] - pathsArray[i + 5]) / 4);
        maxDelta = Math.max(delta, maxDelta);
    }
    rect.setLowerLeftX(Math.min(minX - ab.width / 2 - maxDelta, rect.getLowerLeftX()));
    rect.setLowerLeftY(Math.min(minY - ab.width / 2 - maxDelta, rect.getLowerLeftY()));
    rect.setUpperRightX(Math.max(maxX + ab.width + maxDelta, rect.getUpperRightX()));
    rect.setUpperRightY(Math.max(maxY + ab.width + maxDelta, rect.getUpperRightY()));
    annotation.setRectangle(rect);
    PDAppearanceContentStream cs = null;
    try {
        cs = getNormalAppearanceAsContentStream();
        PDExtendedGraphicsState r0 = new PDExtendedGraphicsState();
        PDExtendedGraphicsState r1 = new PDExtendedGraphicsState();
        r0.setAlphaSourceFlag(false);
        r0.setStrokingAlphaConstant(annotation.getConstantOpacity());
        r0.setNonStrokingAlphaConstant(annotation.getConstantOpacity());
        r1.setAlphaSourceFlag(false);
        r1.setBlendMode(BlendMode.MULTIPLY);
        cs.setGraphicsStateParameters(r0);
        cs.setGraphicsStateParameters(r1);
        // TODO replace with document.getDocument().createCOSStream()
        // or call new PDFormXObject(document)
        PDFormXObject frm1 = new PDFormXObject(createCOSStream());
        PDFormXObject frm2 = new PDFormXObject(createCOSStream());
        frm1.setResources(new PDResources());
        PDFormContentStream mwfofrmCS = null;
        try {
            mwfofrmCS = new PDFormContentStream(frm1);
            mwfofrmCS.drawForm(frm2);
        } finally {
            IOUtils.closeQuietly(mwfofrmCS);
        }
        frm1.setBBox(annotation.getRectangle());
        COSDictionary groupDict = new COSDictionary();
        groupDict.setItem(COSName.S, COSName.TRANSPARENCY);
        // TODO PDFormXObject.setGroup() is missing
        frm1.getCOSObject().setItem(COSName.GROUP, groupDict);
        cs.drawForm(frm1);
        frm2.setBBox(annotation.getRectangle());
        PDFormContentStream frm2CS = null;
        try {
            frm2CS = new PDFormContentStream(frm2);
            frm2CS.setNonStrokingColor(color);
            int of = 0;
            while (of + 7 < pathsArray.length) {
                // quadpoints spec sequence is incorrect, correct one is (4,5 0,1 2,3 6,7)
                // https://stackoverflow.com/questions/9855814/pdf-spec-vs-acrobat-creation-quadpoints
                // for "curvy" highlighting, two Bézier control points are used that seem to have a
                // distance of about 1/4 of the height.
                // note that curves won't appear if outside of the rectangle
                float delta = 0;
                if (Float.compare(pathsArray[of + 0], pathsArray[of + 4]) == 0 && Float.compare(pathsArray[of + 1], pathsArray[of + 3]) == 0 && Float.compare(pathsArray[of + 2], pathsArray[of + 6]) == 0 && Float.compare(pathsArray[of + 5], pathsArray[of + 7]) == 0) {
                    // horizontal highlight
                    delta = (pathsArray[of + 1] - pathsArray[of + 5]) / 4;
                } else if (Float.compare(pathsArray[of + 1], pathsArray[of + 5]) == 0 && Float.compare(pathsArray[of + 0], pathsArray[of + 2]) == 0 && Float.compare(pathsArray[of + 3], pathsArray[of + 7]) == 0 && Float.compare(pathsArray[of + 4], pathsArray[of + 6]) == 0) {
                    // vertical highlight
                    delta = (pathsArray[of + 0] - pathsArray[of + 4]) / 4;
                }
                frm2CS.moveTo(pathsArray[of + 4], pathsArray[of + 5]);
                if (Float.compare(pathsArray[of + 0], pathsArray[of + 4]) == 0) {
                    // horizontal highlight
                    frm2CS.curveTo(pathsArray[of + 4] - delta, pathsArray[of + 5] + delta, pathsArray[of + 0] - delta, pathsArray[of + 1] - delta, pathsArray[of + 0], pathsArray[of + 1]);
                } else if (Float.compare(pathsArray[of + 5], pathsArray[of + 1]) == 0) {
                    // vertical highlight
                    frm2CS.curveTo(pathsArray[of + 4] + delta, pathsArray[of + 5] + delta, pathsArray[of + 0] - delta, pathsArray[of + 1] + delta, pathsArray[of + 0], pathsArray[of + 1]);
                } else {
                    frm2CS.lineTo(pathsArray[of + 0], pathsArray[of + 1]);
                }
                frm2CS.lineTo(pathsArray[of + 2], pathsArray[of + 3]);
                if (Float.compare(pathsArray[of + 2], pathsArray[of + 6]) == 0) {
                    // horizontal highlight
                    frm2CS.curveTo(pathsArray[of + 2] + delta, pathsArray[of + 3] - delta, pathsArray[of + 6] + delta, pathsArray[of + 7] + delta, pathsArray[of + 6], pathsArray[of + 7]);
                } else if (Float.compare(pathsArray[of + 3], pathsArray[of + 7]) == 0) {
                    // vertical highlight
                    frm2CS.curveTo(pathsArray[of + 2] - delta, pathsArray[of + 3] - delta, pathsArray[of + 6] + delta, pathsArray[of + 7] - delta, pathsArray[of + 6], pathsArray[of + 7]);
                } else {
                    frm2CS.lineTo(pathsArray[of + 6], pathsArray[of + 7]);
                }
                frm2CS.fill();
                of += 8;
            }
        } finally {
            IOUtils.closeQuietly(frm2CS);
        }
    } catch (IOException ex) {
        Log.e("PdfBox-Android", ex.getMessage(), ex);
    } finally {
        IOUtils.closeQuietly(cs);
    }
}

Example 8 with PDExtendedGraphicsState

use of com.tom_roush.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState in project PdfBox-Android by TomRoush.

the class PDTextAppearanceHandler method drawHelp.

private void drawHelp(PDAnnotationText annotation, final PDAppearanceContentStream contentStream) throws IOException {
    PDRectangle bbox = adjustRectAndBBox(annotation, 20, 20);
    float min = Math.min(bbox.getWidth(), bbox.getHeight());
    contentStream.setMiterLimit(4);
    contentStream.setLineJoinStyle(1);
    contentStream.setLineCapStyle(0);
    // value from Adobe
    contentStream.setLineWidth(0.59f);
    // Adobe first fills a white circle with CA ca 0.6, so do we
    contentStream.saveGraphicsState();
    contentStream.setLineWidth(1);
    PDExtendedGraphicsState gs = new PDExtendedGraphicsState();
    gs.setAlphaSourceFlag(false);
    gs.setStrokingAlphaConstant(0.6f);
    gs.setNonStrokingAlphaConstant(0.6f);
    gs.setBlendMode(BlendMode.NORMAL);
    contentStream.setGraphicsStateParameters(gs);
    contentStream.setNonStrokingColor(1f);
    drawCircle2(contentStream, min / 2, min / 2, min / 2 - 1);
    contentStream.fill();
    contentStream.restoreGraphicsState();
    contentStream.saveGraphicsState();
    // rescale so that "?" fits into circle and move "?" to circle center
    // values gathered by trial and error
    contentStream.transform(Matrix.getScaleInstance(0.001f * min / 2.25f, 0.001f * min / 2.25f));
    contentStream.transform(Matrix.getTranslateInstance(500, 375));
    // we get the shape of an Helvetica bold "?" and use that one.
    // Adobe uses a different font (which one?), or created the shape from scratch.
    Path path = PDType1Font.HELVETICA_BOLD.getPath("question");
    addPath(contentStream, path);
    contentStream.restoreGraphicsState();
    // draw the outer circle counterclockwise to fill area between circle and "?"
    drawCircle2(contentStream, min / 2, min / 2, min / 2 - 1);
    contentStream.fillAndStroke();
}

Example 9 with PDExtendedGraphicsState

use of com.tom_roush.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState in project PdfBox-Android by TomRoush.

the class PDTextAppearanceHandler method drawParagraph.

private void drawParagraph(PDAnnotationText annotation, final PDAppearanceContentStream contentStream) throws IOException {
    PDRectangle bbox = adjustRectAndBBox(annotation, 20, 20);
    float min = Math.min(bbox.getWidth(), bbox.getHeight());
    contentStream.setMiterLimit(4);
    contentStream.setLineJoinStyle(1);
    contentStream.setLineCapStyle(0);
    // value from Adobe
    contentStream.setLineWidth(0.59f);
    // Adobe first fills a white circle with CA ca 0.6, so do we
    contentStream.saveGraphicsState();
    contentStream.setLineWidth(1);
    PDExtendedGraphicsState gs = new PDExtendedGraphicsState();
    gs.setAlphaSourceFlag(false);
    gs.setStrokingAlphaConstant(0.6f);
    gs.setNonStrokingAlphaConstant(0.6f);
    gs.setBlendMode(BlendMode.NORMAL);
    contentStream.setGraphicsStateParameters(gs);
    contentStream.setNonStrokingColor(1f);
    drawCircle2(contentStream, min / 2, min / 2, min / 2 - 1);
    contentStream.fill();
    contentStream.restoreGraphicsState();
    contentStream.saveGraphicsState();
    // rescale so that "?" fits into circle and move "?" to circle center
    // values gathered by trial and error
    contentStream.transform(Matrix.getScaleInstance(0.001f * min / 3, 0.001f * min / 3));
    contentStream.transform(Matrix.getTranslateInstance(850, 900));
    // we get the shape of an Helvetica "?" and use that one.
    // Adobe uses a different font (which one?), or created the shape from scratch.
    Path path = PDType1Font.HELVETICA.getPath("paragraph");
    addPath(contentStream, path);
    contentStream.restoreGraphicsState();
    contentStream.fillAndStroke();
    drawCircle(contentStream, min / 2, min / 2, min / 2 - 1);
    contentStream.stroke();
}

Example 10 with PDExtendedGraphicsState

use of com.tom_roush.pdfbox.pdmodel.graphics.state.PDExtendedGraphicsState in project PdfBox-Android by TomRoush.

the class PDTextAppearanceHandler method drawComment.

private void drawComment(PDAnnotationText annotation, final PDAppearanceContentStream contentStream) throws IOException {
    adjustRectAndBBox(annotation, 18, 18);
    contentStream.setMiterLimit(4);
    contentStream.setLineJoinStyle(1);
    contentStream.setLineCapStyle(0);
    contentStream.setLineWidth(200);
    // Adobe first fills a white rectangle with CA ca 0.6, so do we
    contentStream.saveGraphicsState();
    contentStream.setLineWidth(1);
    PDExtendedGraphicsState gs = new PDExtendedGraphicsState();
    gs.setAlphaSourceFlag(false);
    gs.setStrokingAlphaConstant(0.6f);
    gs.setNonStrokingAlphaConstant(0.6f);
    gs.setBlendMode(BlendMode.NORMAL);
    contentStream.setGraphicsStateParameters(gs);
    contentStream.setNonStrokingColor(1f);
    contentStream.addRect(0.3f, 0.3f, 18 - 0.6f, 18 - 0.6f);
    contentStream.fill();
    contentStream.restoreGraphicsState();
    contentStream.transform(Matrix.getScaleInstance(0.003f, 0.003f));
    contentStream.transform(Matrix.getTranslateInstance(500, -300));
    // outer shape was gathered from Font Awesome by "printing" comment.svg
    // into a PDF and looking at the content stream
    contentStream.moveTo(2549, 5269);
    contentStream.curveTo(1307, 5269, 300, 4451, 300, 3441);
    contentStream.curveTo(300, 3023, 474, 2640, 764, 2331);
    contentStream.curveTo(633, 1985, 361, 1691, 357, 1688);
    contentStream.curveTo(299, 1626, 283, 1537, 316, 1459);
    contentStream.curveTo(350, 1382, 426, 1332, 510, 1332);
    contentStream.curveTo(1051, 1332, 1477, 1558, 1733, 1739);
    contentStream.curveTo(1987, 1659, 2261, 1613, 2549, 1613);
    contentStream.curveTo(3792, 1613, 4799, 2431, 4799, 3441);
    contentStream.curveTo(4799, 4451, 3792, 5269, 2549, 5269);
    contentStream.closePath();
    // can't use addRect: if we did that, we wouldn't get the donut effect
    contentStream.moveTo(0.3f / 0.003f - 500, 0.3f / 0.003f + 300);
    contentStream.lineTo(0.3f / 0.003f - 500, 0.3f / 0.003f + 300 + 17.4f / 0.003f);
    contentStream.lineTo(0.3f / 0.003f - 500 + 17.4f / 0.003f, 0.3f / 0.003f + 300 + 17.4f / 0.003f);
    contentStream.lineTo(0.3f / 0.003f - 500 + 17.4f / 0.003f, 0.3f / 0.003f + 300);
    contentStream.closeAndFillAndStroke();
}