Java 类com.itextpdf.text.pdf.PdfGState 实例源码

项目：testarea-itext5 文件：TestTransparency.java

@Test
public void testSimple() throws FileNotFoundException, DocumentException
{
    Document document = new Document();
    PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(new File(RESULT_FOLDER, "transparency.pdf")));
    writer.setCompressionLevel(0);
    document.open();
    PdfContentByte content = writer.getDirectContent();

    content.setRGBColorStroke(0, 255, 0);
    for (int y = 0; y <= 400; y+= 10)
    {
        content.moveTo(0, y);
        content.lineTo(500, y);
    }
    for (int x = 0; x <= 500; x+= 10)
    {
        content.moveTo(x, 0);
        content.lineTo(x, 400);
    }
    content.stroke();


    content.saveState();
    PdfGState state = new PdfGState();
    state.setFillOpacity(0.5f);
    content.setGState(state);
    content.setRGBColorFill(255, 0, 0);
    content.moveTo(162, 86);
    content.lineTo(162, 286);
    content.lineTo(362, 286);
    content.lineTo(362, 86);
    content.closePath();
    //content.fillStroke();
    content.fill();

    content.restoreState();

    document.close();
}

项目：PdfUtil 文件：PdfWatermarker.java

public static void applyWatermarkOnAllPages(
    PdfReader reader, PdfStamper stamper, String text, BaseColor color, float opacity
) throws DocumentException, IOException {

    int numberOfPages = reader.getNumberOfPages();

    PdfGState gs = new PdfGState();
    gs.setFillOpacity(opacity);

    for (int i = 1; i <= numberOfPages; i++) {
        Rectangle pageSize = reader.getPageSize(i);
        int pageRotation = reader.getPageRotation(i);

        boolean isLandscape = false;
        if(pageRotation > 0){
            isLandscape = true;
        }

        int pageDiagonalSize = getDiagonalSize(pageSize);
        int watermarkAngle = getDiagonalAngle(pageSize, pageDiagonalSize, isLandscape);

        LinkedHashSet<Integer> fontSizeSet = new LinkedHashSet<Integer>();
        float fontSize = determineFontSize(pageDiagonalSize, a4WatermarkFontSize, fontSizeSet);
        fontSize = fontSize - 1;

        int cornerPlacement = getCornerPlacementDiagonal(fontSize);

        PdfContentByte underContent = stamper.getUnderContent(i);
        underContent.setGState(gs);
        underContent.setFontAndSize(getWaterkmarkFont(), fontSize);
        underContent.setColorFill(color);
        underContent.beginText();
        underContent.showTextAligned(
            Element.ALIGN_BASELINE, text, 
            cornerPlacement/2,
            cornerPlacement/2,
            watermarkAngle
        );
        underContent.endText();
    }
}

项目：testarea-itext5 文件：CreateLink.java

/**
 * <a href="http://stackoverflow.com/questions/34734669/define-background-color-and-transparency-of-link-annotation-in-pdf">
 * Define background color and transparency of link annotation in PDF
 * </a>
 * <p>
 * This test creates a link annotation with custom appearance. Adobe Reader chooses
 * to ignore it but other viewers use it. Interestingly Adobe Acrobat export-as-image
 * does use the custom appearance...
 * </p>
 */
@Test
public void testCreateLinkWithAppearance() throws IOException, DocumentException
{
    Document doc = new Document();
    PdfWriter writer = PdfWriter.getInstance(doc, new FileOutputStream(new File(RESULT_FOLDER, "custom-link.appearance.pdf")));
    writer.setCompressionLevel(0);
    doc.open();

    BaseFont baseFont = BaseFont.createFont();
    int fontSize = 15;
    doc.add(new Paragraph("Hello", new Font(baseFont, fontSize)));

    PdfContentByte content = writer.getDirectContent();

    String text = "Test";
    content.setFontAndSize(baseFont, fontSize);
    content.beginText();
    content.moveText(100, 500);
    content.showText(text);
    content.endText();

    Rectangle linkLocation = new Rectangle(95, 495 + baseFont.getDescentPoint(text, fontSize),
            105 + baseFont.getWidthPoint(text, fontSize), 505 + baseFont.getAscentPoint(text, fontSize));

    PdfAnnotation linkGreen = PdfAnnotation.createLink(writer, linkLocation, PdfName.HIGHLIGHT, "green" );
    PdfTemplate appearance = PdfTemplate.createTemplate(writer, linkLocation.getWidth(), linkLocation.getHeight());
    PdfGState state = new PdfGState();
    //state.FillOpacity = .3f;
    // IMPROVEMENT: Use blend mode Darken instead of transparency; you may also want to try Multiply.
    state.setBlendMode(new PdfName("Darken"));
    appearance.setGState(state);

    appearance.setColorFill(BaseColor.GREEN);
    appearance.rectangle(0, 0, linkLocation.getWidth(), linkLocation.getHeight());
    appearance.fill();
    linkGreen.setAppearance(PdfName.N, appearance);
    writer.addAnnotation(linkGreen);

    doc.open();
    doc.close();
}

项目：testarea-itext5 文件：TestTransparency.java

@Test
public void testComplex() throws FileNotFoundException, DocumentException
{
    Document document = new Document();
    PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(new File(RESULT_FOLDER, "transparencyComplex.pdf")));
    writer.setCompressionLevel(0);
    document.open();
    PdfContentByte content = writer.getDirectContent();

    content.setRGBColorStroke(0, 255, 0);
    for (int y = 0; y <= 400; y+= 10)
    {
        content.moveTo(0, y);
        content.lineTo(500, y);
    }
    for (int x = 0; x <= 500; x+= 10)
    {
        content.moveTo(x, 0);
        content.lineTo(x, 400);
    }
    content.stroke();

    PdfTemplate template = content.createTemplate(500, 400);
    PdfTransparencyGroup group = new PdfTransparencyGroup();
    group.put(PdfName.CS, PdfName.DEVICEGRAY);
    group.setIsolated(false);
    group.setKnockout(false);
    template.setGroup(group);
    PdfShading radial = PdfShading.simpleRadial(writer, 262, 186, 10, 262, 186, 190, BaseColor.WHITE, BaseColor.BLACK, true, true);
    template.paintShading(radial);

    PdfDictionary mask = new PdfDictionary();
    mask.put(PdfName.TYPE, PdfName.MASK);
    mask.put(PdfName.S, new PdfName("Luminosity"));
    mask.put(new PdfName("G"), template.getIndirectReference());

    content.saveState();
    PdfGState state = new PdfGState();
    state.put(PdfName.SMASK, mask);
    content.setGState(state);
    content.setRGBColorFill(255, 0, 0);
    content.moveTo(162, 86);
    content.lineTo(162, 286);
    content.lineTo(362, 286);
    content.lineTo(362, 86);
    content.closePath();
    //content.fillStroke();
    content.fill();

    content.restoreState();

    document.close();
}

项目：WOLFGANG 文件：ExportPDFAction.java

private void createPDFFile(String filename) throws FileNotFoundException, DocumentException {
    PNEditorComponent editor = getEditor();
    PNGraph pnGraph = editor.getGraphComponent().getGraph();

    JFrame frm = new JFrame();
    PNGraphComponent forPrint = new PNGraphComponent(pnGraph) {
    };
    mxRectangle size = forPrint.getGraph().getGraphBounds();
    double space = 4;
    float x = (float) (size.getRectangle().getWidth() + size.getRectangle().getX() + space);
    float y = (float) (size.getRectangle().getHeight() + size.getRectangle().getY() + space);
    Document document = new Document(new Rectangle(x, y));
    PdfWriter writer = null;
    writer = PdfWriter.getInstance(document, new FileOutputStream(filename));

    // set crop of pdf doc = ll=lowerleft; ur=upper right
    float llx = (float) size.getX();
    float lly = 0;
    float urx = x;
    float ury = (float) ((float) size.getRectangle().getHeight() + space*4);
    com.itextpdf.text.Rectangle crop = new com.itextpdf.text.Rectangle(llx, lly, urx, ury);
    writer.setCropBoxSize(crop);

    document.open();

    PdfContentByte canvas = writer.getDirectContent();

    // make pdf-background transparent
    PdfGState gState = new PdfGState();
    gState.setFillOpacity(0.0f);
    canvas.setGState(gState);

    forPrint.setGridVisible(false);

    PdfGraphics2D g2 = new PdfGraphics2D(canvas, x, y);

    frm.getContentPane().add(forPrint);
    frm.pack();
    forPrint.paint(g2);
    g2.dispose();

    document.close();
}

项目：WOLFGANG 文件：ExportPNGAction.java

@Override
    protected void doFancyStuff(ActionEvent e) throws Exception {
        setUpGui();
        fch.addChoosableFileFilter(new FileFilter() {
            public String getDescription() {
                return "Portable Network Graphics (*.png)";
            }
            public boolean accept(File f) {
                if (f.isDirectory()) {
                    return true;
                } else {
                    return f.getName().toLowerCase().endsWith(".png");
                }
            }
        });
        fch.setDialogTitle("Save PNG");
        int returnVal = fch.showDialog(getEditor().getGraphComponent(), "save PNG");

        if (returnVal == JFileChooser.APPROVE_OPTION) {
            String filename = fch.getSelectedFile().getAbsolutePath();
            if (!filename.toLowerCase().endsWith(".png"))
                filename += ".png";

            PNEditorComponent editor = getEditor();
            PNGraph pnGraph = editor.getGraphComponent().getGraph();


                JFrame frm = new JFrame();
                PNGraphComponent forPrint = new PNGraphComponent(pnGraph) {
                };
                mxRectangle size = forPrint.getGraph().getGraphBounds();
                double space = 4;
                float x = (float) (size.getRectangle().getWidth() + size.getRectangle().getX() + space);
                float y = (float) (size.getRectangle().getHeight() + size.getRectangle().getY() + space);
                Document document = new Document(new Rectangle(x, y));
                PdfWriter writer = null;
                writer = PdfWriter.getInstance(document, new FileOutputStream(filename));

                // set crop of pdf doc = ll=lowerleft; ur=upper right
                float llx = (float) size.getX();
                float lly = 0;
                float urx = x;
                float ury = (float) ((float) size.getRectangle().getHeight() + space);
                com.itextpdf.text.Rectangle crop = new com.itextpdf.text.Rectangle(llx, lly, urx, ury);
                writer.setCropBoxSize(crop);

                document.open();

                PdfContentByte canvas = writer.getDirectContent();

                // make pdf-background transparent
                PdfGState gState = new PdfGState();
                gState.setFillOpacity(0.0f);
                canvas.setGState(gState);

                forPrint.setGridVisible(false);

//              PdfGraphics2D g2 = new PdfGraphics2D(canvas, x, y);

                BufferedImage b = new BufferedImage(100,100,BufferedImage.TYPE_INT_RGB); /* change sizes of course */
                Graphics2D g2 = b.createGraphics();
//              component.print(g);



                frm.getContentPane().add(forPrint);
                frm.pack();
                forPrint.paint(g2);
                ImageIO.write(b,"png",new File(filename));
                g2.dispose();
                document.close();

        }       
    }