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<!DOCTYPE document PUBLIC "-//APACHE//DTD Documentation V1.3//EN" "../dtd/document-v13.dtd">

<document>
    <header>
        <title>XSLF Cookbook</title>
        <authors>
            <person email="yegor@apache.org" name="Yegor Kozlov" id="YK"/>
        </authors>
    </header>
    <body>
        <section><title>XSLF Cookbook</title>
            <p>
              This page offers a short introduction into the XSLF API. More examples can be found in the
                <link href="http://svn.apache.org/repos/asf/poi/trunk/src/examples/src/org/apache/poi/xslf/usermodel/"> XSLF Examples</link>
               in the POI SVN repository. 
            </p>
            <note>
            Please note that XSLF is still in early development and is a subject to incompatible changes in a future release. 
            </note>
             <section><title>Index of Features</title>
                <ul>
                    <li><link href="#NewPresentation">Create a new presentation</link></li>
                    <li><link href="#ReadPresentation">Read an existing presentation</link></li>
                    <li><link href="#SlideLayout">Create a slide with a predefined layout</link></li>
                    <li><link href="#DeleteSlide">Delete slide</link></li>
                    <li><link href="#MoveSlide">Re-order slides</link></li>
                    <li><link href="#SlideSize">Change slide size</link></li>
                    <li><link href="#GetShapes">Read shapes</link></li>
                    <li><link href="#AddImage">Add image</link></li>
                    <li><link href="#ReadImages">Read images contained in a presentation</link></li>
                    <li><link href="#Text">Format text</link></li>
                    <li><link href="#Hyperlinks">Hyperlinks</link></li>
                    <li><link href="#PPTX2PNG">Convert .pptx slides into images</link></li>
                    <li><link href="#Merge">Merge multiple presentations together</link></li>
                </ul>
            </section>
            <section><title>Cookbok</title>
                <anchor id="NewPresentation"/>
                <section><title>New Presentation</title>
                <p>
                The following code creates a new .pptx slide show and adds a blank slide to it:
                </p>
                  <source>
    //create a new empty slide show
    XMLSlideShow ppt = new XMLSlideShow();

    //add first slide
    XSLFSlide blankSlide = ppt.createSlide();
                 </source>
                </section>
                <anchor id="ReadPresentation"/>
                <section><title>Read an existing presentation and append a slide to it</title>
                  <source>
    XMLSlideShow ppt = new XMLSlideShow(new FileInputStream("slideshow.pptx"));

    //append a new slide to the end
    XSLFSlide blankSlide = ppt.createSlide();
                 </source>
                </section>

                <anchor id="SlideLayout"/>
                <section><title>Create a new slide from a predefined slide layout</title>
                  <source>
    XMLSlideShow ppt = new XMLSlideShow(new FileInputStream("slideshow.pptx"));

    // first see what slide layouts are available :
    System.out.println("Available slide layouts:");
    for(XSLFSlideMaster master : ppt.getSlideMasters()){
        for(XSLFSlideLayout layout : master.getSlideLayouts()){
            System.out.println(layout.getType());
        }
    }

    // blank slide
    XSLFSlide blankSlide = ppt.createSlide();

    // there can be multiple masters each referencing a number of layouts
    // for demonstration purposes we use the first (default) slide master
    XSLFSlideMaster defaultMaster = ppt.getSlideMasters()[0];

    // title slide
    XSLFSlideLayout titleLayout = defaultMaster.getLayout(SlideLayout.TITLE);
    // fill the placeholders
    XSLFSlide slide1 = ppt.createSlide(titleLayout);
    XSLFTextShape title1 = slide1.getPlaceholder(0);
    title1.setText("First Title");

    // title and content
    XSLFSlideLayout titleBodyLayout = defaultMaster.getLayout(SlideLayout.TITLE_AND_CONTENT);
    XSLFSlide slide2 = ppt.createSlide(titleBodyLayout);

    XSLFTextShape title2 = slide2.getPlaceholder(0);
    title2.setText("Second Title");

    XSLFTextShape body2 = slide2.getPlaceholder(1);
    body2.clearText(); // unset any existing text
    body2.addNewTextParagraph().addNewTextRun().setText("First paragraph");
    body2.addNewTextParagraph().addNewTextRun().setText("Second paragraph");
    body2.addNewTextParagraph().addNewTextRun().setText("Third paragraph");
                </source>
                </section>

                <anchor id="DeleteSlide"/>
                <section><title>Delete slide</title>
                  <source>
    XMLSlideShow ppt = new XMLSlideShow(new FileInputStream("slideshow.pptx"));

    ppt.removeSlide(0); // 0-based index of a slide to be removed
                </source>
                </section>

                <anchor id="MoveSlide"/>
                <section><title>Re-order slides</title>
                  <source>
    XMLSlideShow ppt = new XMLSlideShow(new FileInputStream("slideshow.pptx"));
    XSLFSlide[] slides = ppt.getSlides();

    XSLFSlide thirdSlide = slides[2];
    ppt.setSlideOrder(thirdSlide, 0); // move the third slide to the beginning
                </source>
                </section>

                <anchor id="SlideSize"/>
                <section><title>How to retrieve or change slide size</title>
                    <source>
    XMLSlideShow ppt = new XMLSlideShow();
    //retrieve page size. Coordinates are expressed in points (72 dpi)
    java.awt.Dimension pgsize = ppt.getPageSize();
    int pgx = pgsize.width; //slide width in points
    int pgy = pgsize.height; //slide height in points

    //set new page size
    ppt.setPageSize(new java.awt.Dimension(1024, 768));
                  </source>
                </section>
                <anchor id="GetShapes"/>
                <section><title>How to read shapes contained in a particular slide</title>
                  <p>
                    The following code demonstrates how to iterate over shapes for each slide.
                  </p>
                    <source>
  XMLSlideShow ppt = new XMLSlideShow(new FileInputStream("slideshow.pptx"));
  //get slides 
  XSLFSlide[] slide = ppt.getSlides();
  for (int i = 0; i &lt; slide.length; i++){
    XSLFShape[] sh = slide[i].getShapes();
    for (int j = 0; j &lt; sh.length; j++){
      //name of the shape
      String name = sh[j].getShapeName();

      //shapes's anchor which defines the position of this shape in the slide
      java.awt.geom.Rectangle2D anchor = sh[j].getAnchor();

      if (sh[j] instanceof XSLFConnectorShape){
        XSLFConnectorShape line = (XSLFConnectorShape)sh[j];
        //work with Line
      } else if (sh[j] instanceof XSLFTextShape){
        XSLFTextShape shape = (XSLFTextShape)sh[j];
        //work with a shape that can hold text
      } else if (sh[j] instanceof XSLFPictureShape){
        XSLFPictureShape shape = (XSLFPictureShape)sh[j];
        //work with Picture
      }
    }
  }
                  </source>
                </section>
                <anchor id="AddImage"/>
                <section><title>Add Image to Slide</title>
                    <source>
        XMLSlideShow ppt = new XMLSlideShow();
        XSLFSlide slide = ppt.createSlide();
        
        byte[] pictureData = IOUtils.toByteArray(new FileInputStream("image.png"));

        int idx = ppt.addPicture(pictureData, XSLFPictureData.PICTURE_TYPE_PNG);
        XSLFPictureShape pic = slide.createPicture(idx);
                    </source>
                </section>

                <anchor id="ReadImages"/>
                <section><title>Read Images contained within a presentation</title>
                    <source>
        XMLSlideShow ppt = new XMLSlideShow(new FileInputStream("slideshow.pptx"));
        for(XSLFPictureData data : ppt.getAllPictures()){
            byte[] bytes = data.getData();
            String fileName = data.getFileName();
            
        }
                    </source>
                </section>

         <anchor id="Text"/>
                <section><title>Basic text formatting</title>
                    <source>
    XMLSlideShow ppt = new XMLSlideShow();
    XSLFSlide slide = ppt.createSlide();

    XSLFTextBox shape = slide.createTextBox();
    XSLFTextParagraph p = shape.addNewTextParagraph();

    XSLFTextRun r1 = p.addNewTextRun();
    r1.setText("The");
    r1.setFontColor(Color.blue);
    r1.setFontSize(24);

    XSLFTextRun r2 = p.addNewTextRun();
    r2.setText(" quick");
    r2.setFontColor(Color.red);
    r2.setBold(true);

    XSLFTextRun r3 = p.addNewTextRun();
    r3.setText(" brown");
    r3.setFontSize(12);
    r3.setItalic(true);
    r3.setStrikethrough(true);
    
    XSLFTextRun r4 = p.addNewTextRun();
    r4.setText(" fox");
    r4.setUnderline(true);
            </source>
                </section>
                <anchor id="Hyperlinks"/>
                <section><title>How to read hyperlinks from a slide show</title>
                    <source>
    XMLSlideShow ppt = new XMLSlideShow();
    XSLFSlide slide = ppt.createSlide();

    // assign a hyperlink to a text run
    XSLFTextBox shape = slide.createTextBox();
    XSLFTextRun r = shape.addNewTextParagraph().addNewTextRun();
    r.setText("Apache POI");
    XSLFHyperlink link = r.createHyperlink();
    link.setAddress("http://poi.apache.org");
                </source>
                </section>
                <anchor id="PPTX2PNG"/>
                <section><title>PPTX2PNG is an application that converts each slide of a .pptx slideshow into a PNG image</title>
                <source>
Usage: PPTX2PNG [options] &lt;pptx file&gt;
Options:
    -scale &lt;float&gt;   scale factor (default is 1.0)
    -slide &lt;integer&gt; 1-based index of a slide to render. Default is to render all slides.
                </source>
                <p>How it works:</p>
                <p>
                    The XSLFSlide object implements a draw(Graphics2D graphics) method that recursively paints all shapes
                    in the slide into the supplied graphics canvas:
                </p>
                <source>
            slide.draw(graphics);
                </source>
                <p>
                where graphics is a class implementing java.awt.Graphics2D. In PPTX2PNG the graphic canvas is derived from
                java.awt.image.BufferedImage, i.e. the destination is an image in memory, but in general case you can pass
                any compliant implementation of  java.awt.Graphics2D. The 
                <link href="http://svn.apache.org/repos/asf/poi/trunk/src/examples/src/org/apache/poi/xslf/usermodel/PPTX2SVG.txt">PPTX2SVG</link>
                example demonstrates how to use Apache Batik to convert .pptx slides into SVG format. 
                </p>
                </section>
                <anchor id="Merge"/>
                <section>
                    <title>Merge multiple presentations together</title>
                    <source>
    XMLSlideShow ppt = new XMLSlideShow();
    String[] inputs = {"presentations1.pptx", "presentation2.pptx"};
    for(String arg : inputs){
        FileInputStream is = new FileInputStream(arg);
        XMLSlideShow src = new XMLSlideShow(is);
        is.close();

        for(XSLFSlide srcSlide : src.getSlides()){
            ppt.createSlide().importContent(srcSlide);
        }
    }

    FileOutputStream out = new FileOutputStream("merged.pptx");
    ppt.write(out);
    out.close();
                    </source>
                </section>

            </section>
        </section>
    </body>
</document>
