Android Open Source - RadaeePDF-B4A R S P D F Document

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License

The source code is released under:
Apache License
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Java Source Code

package com.rootsoft.rspdfviewer.pdf;
//  ww  w. java  2  s. c o m
import android.graphics.Bitmap;
import anywheresoftware.b4a.AbsObjectWrapper;
import anywheresoftware.b4a.BA.ShortName;

import com.radaee.pdf.Document;
import com.radaee.pdf.Document.DocFont;
import com.radaee.pdf.Document.DocGState;
import com.radaee.pdf.Document.DocImage;
import com.radaee.pdf.Document.ImportContext;
import com.radaee.pdf.Document.Outline;
import com.radaee.pdf.Document.PDFStream;
import com.radaee.pdf.Page;
import com.radaee.pdf.PDFHttpStream;

@ShortName("PDFDocument")
public class RSPDFDocument extends AbsObjectWrapper<Document> {

  // Attributes

  // Constructors - Initialization

  /**
   * Initializes the PDFDocument.
   */
  public void Initialize() {
    setObject(new Document());
  }

  /**
   * check if opened.
   * 
   * @return true or false.
   */
  public boolean is_opened() {
    return getObject().is_opened();
  }

  /**
   * create a empty PDF document
   * 
   * @param path
   *            path to create
   * @return 0 or less than 0 means failed, same as Open.
   */
  public int Create(String path) {
    return getObject().Create(path);
  }

  /**
   * create a empty PDF document
   * 
   * @param stream
   *            stream to create
   * @return 0 or less than 0 means failed, same as Open.
   */
  public int CreateForStream(PDFStream stream) {
    return getObject().CreateForStream(stream);
  }

  /**
   * set cache file to PDF.<br/>
   * a premium license is needed for this method.
   * 
   * @param path
   *            a path to save some temporary data, compressed images and so
   *            on
   * @return true or false
   */
  public boolean setCache(String path) {
    return getObject().SetCache(path);
  }

  /**
   * open document.<br/>
   * first time, SDK try password as user password, and then try password as
   * owner password.
   * 
   * @param path
   *            PDF file to be open.
   * @param password
   *            password or null.
   * @return error code:<br/>
   *         0:succeeded, and continue<br/>
   *         -1:need input password<br/>
   *         -2:unknown encryption<br/>
   *         -3:damaged or invalid format<br/>
   *         -10:access denied or invalid file path<br/>
   *         others:unknown error
   */
  public int Open(String path, String password) {
    return getObject().Open(path, password);
  }

  /**
   * open document in memory. first time, SDK try password as user password,
   * and then try password as owner password.
   * 
   * @param data
   *            data for whole PDF file in byte array. developers should
   *            retain array data, till document closed.
   * @param password
   *            password or null.
   * @return error code:<br/>
   *         0:succeeded, and continue<br/>
   *         -1:need input password<br/>
   *         -2:unknown encryption<br/>
   *         -3:damaged or invalid format<br/>
   *         -10:access denied or invalid file path<br/>
   *         others:unknown error
   */
  public int OpenMem(byte[] data, String password) {
    return getObject().OpenMem(data, password);
  }

  /**
   * open document from stream. first time, SDK try password as user password,
   * and then try password as owner password.
   * 
   * @param stream
   *            PDFStream object.
   * @param password
   *            password or null.
   * @return error code:<br/>
   *         0:succeeded, and continue<br/>
   *         -1:need input password<br/>
   *         -2:unknown encryption<br/>
   *         -3:damaged or invalid format<br/>
   *         -10:access denied or invalid file path<br/>
   *         others:unknown error
   */
  public int OpenStream(PDFStream stream, String password) {
    return getObject().OpenStream(stream, password);
  }

  /**
   * get permission of PDF, this value defined in PDF reference 1.7<br/>
   * bit 1-2 reserved<br/>
   * bit 3(0x4) print<br/>
   * bit 4(0x8) modify<br/>
   * bit 5(0x10) extract text or image<br/>
   * others: see PDF reference
   * 
   * @return permission flags
   */
  public int getPermission() {
    return getObject().GetPermission();
  }

  /**
   * get permission of PDF, this value defined in "Perm" entry in Catalog
   * object
   * 
   * @return 0 means not defined<br/>
   *         1 means can't modify<br/>
   *         2 means can modify some form fields<br/>
   *         3 means can do any modify<br/>
   */
  public int getPerm() {
    return getObject().GetPerm();
  }

  /**
   * close the document.
   */
  public void Close() {
    getObject().Close();
  }

  /**
   * get a Page object for page NO.
   * 
   * @param pageno
   *            0 based page NO. range:[0, GetPageCount()-1]
   * @return Page object
   */
  public Page getPage(int pageno) {
    return getObject().GetPage(pageno);
  }

  /**
   * get pages count.
   * 
   * @return pages count.
   */
  public int getPageCount() {
    return getObject().GetPageCount();
  }

  /**
   * get page width by page NO.
   * 
   * @param pageno
   *            0 based page NO. range:[0, GetPageCount()-1]
   * @return width value.
   */
  public float getPageWidth(int pageno) {
    return getObject().GetPageWidth(pageno);
  }

  /**
   * get page height by page NO.
   * 
   * @param pageno
   *            0 based page NO. range:[0, GetPageCount()-1]
   * @return height value.
   */
  public float getPageHeight(int pageno) {
    return getObject().GetPageHeight(pageno);
  }

  /**
   * get meta data for document.
   * 
   * @param tag
   *            Predefined values:"Title", "Author", "Subject", "Keywords",
   *            "Creator", "Producer", "CreationDate", "ModDate".<br/>
   *            or you can pass any key that self-defined.
   * @return Meta string value, or null.
   */
  public String getMeta(String tag) {
    return getObject().GetMeta(tag);
  }

  /**
   * set meta data for document.<br/>
   * this method valid only in premium version.
   * 
   * @param tag
   *            Predefined values:"Title", "Author", "Subject", "Keywords",
   *            "Creator", "Producer", "CreationDate", "ModDate".<br/>
   *            or you can pass any key that self-defined.
   * @param val
   *            string value.
   * @return true or false.
   */
  public boolean setMeta(String tag, String val) {
    return getObject().SetMeta(tag, val);
  }

  /**
   * get first root outline item.
   * 
   * @return handle value of first root outline item. or null if no outlines.<br/>
   */
  public Outline getOutlines() {
    return getObject().GetOutlines();
  }

  public PDFStream getURLStream(String url) {
    PDFHttpStream m_stream = new PDFHttpStream();
    m_stream.open(url);
    return m_stream;
  }

  /**
   * check if document can be modified or saved.<br/>
   * this always return false, if no license actived.
   * 
   * @return true or false.
   */
  public boolean CanSave() {
    return getObject().CanSave();
  }

  /**
   * save the document.<br/>
   * this always return false, if no license actived.
   * 
   * @return true or false
   */
  public boolean Save() {
    return getObject().Save();
  }

  /**
   * save as the document to another file. it remove any security information.<br/>
   * this always return false, if no license actived.
   * 
   * @param path
   *            path to save.
   * @return true or false.
   */
  public boolean SaveAs(String path) {
    return getObject().SaveAs(path);
  }

  /**
   * check if document is encrypted.
   * 
   * @return true or false.
   */
  public boolean IsEncrypted() {
    return getObject().IsEncrypted();
  }

  /**
   * new a root outline to document, it insert first root outline to Document.<br/>
   * the old first root outline, shall be next of this outline.
   * 
   * @param label
   *            label to display
   * @param pageno
   *            pageno to jump
   * @param top
   *            y position in PDF coordinate
   * @return true or false
   */
  public boolean NewRootOutline(String label, int pageno, float top) {
    return getObject().NewRootOutline(label, pageno, top);
  }

  /**
   * Start import operations, import page from src<br/>
   * a premium license is needed for this method.<br/>
   * you shall maintenance the source Document object until all pages are
   * imported and ImportContext.Destroy() invoked.
   * 
   * @param src
   *            source Document object that opened.
   * @return a context object used in ImportPage.
   */
  public ImportContext ImportStart(Document src) {
    return getObject().ImportStart(src);
  }

  /**
   * import a page to the document.<br/>
   * a premium license is needed for this method.<br/>
   * do not forget to invoke ImportContext.Destroy() after all pages are
   * imported.
   * 
   * @param ctx
   *            context object created from ImportStart
   * @param srcno
   *            0 based page NO. from source Document that passed to
   *            ImportStart.
   * @param dstno
   *            0 based page NO. to insert in this document object.
   * @return true or false.
   */
  public boolean ImportPage(ImportContext ctx, int srcno, int dstno) {
    return getObject().ImportPage(ctx, srcno, dstno);
  }

  /**
   * insert a page to Document<br/>
   * if pagheno >= page_count, it do same as append.<br/>
   * otherwise, insert to pageno.<br/>
   * a premium license is needed for this method.
   * 
   * @param pageno
   *            0 based page NO.
   * @param w
   *            page width in PDF coordinate
   * @param h
   *            page height in PDF coordinate
   * @return Page object or null means failed.
   */
  public Page NewPage(int pageno, float w, float h) {
    return getObject().NewPage(pageno, w, h);
  }

  /**
   * remove page by page NO.<br/>
   * a premium license is needed for this method.
   * 
   * @param pageno
   *            0 based page NO.
   * @return true or false
   */
  public boolean RemovePage(int pageno) {
    return getObject().RemovePage(pageno);
  }

  /**
   * move the page to other position.<br/>
   * a premium license is needed for this method.
   * 
   * @param pageno1
   *            page NO, move from
   * @param pageno2
   *            page NO, move to
   * @return true or false
   */
  public boolean MovePage(int pageno1, int pageno2) {
    return getObject().MovePage(pageno1, pageno2);
  }

  /**
   * create a font object, used to write texts.<br/>
   * a premium license is needed for this method.
   * 
   * @param font_name
   * <br/>
   *            font name exists in font list.<br/>
   *            using Global.getFaceCount(), Global.getFaceName() to enumerate
   *            fonts.
   * @param style
   * <br/>
   *            (style&1) means bold,<br/>
   *            (style&2) means Italic,<br/>
   *            (style&8) means embed,<br/>
   *            (style&16) means vertical writing, mostly used in Asia fonts.
   * @return DocFont object or null is failed.
   */
  public DocFont NewFontCID(String font_name, int style) {
    return getObject().NewFontCID(font_name, style);
  }

  /**
   * create a ExtGraphicState object, used to set alpha values.<br/>
   * a premium license is needed for this method.
   * 
   * @return DocGState object or null.
   */
  public DocGState NewGState() {
    return getObject().NewGState();
  }

  /**
   * create an image from Bitmap object.<br/>
   * a premium license is needed for this method.
   * 
   * @param bmp
   *            Bitmap object in ARGB_8888 format.
   * @param has_alpha
   *            generate alpha channel information?
   * @return DocImage object or null.
   */
  public DocImage NewImage(Bitmap bmp, boolean has_alpha) {
    return getObject().NewImage(bmp, has_alpha);
  }

  /**
   * create an image from JPEG/JPG file.<br/>
   * supported image color space:<br/>
   * --GRAY<br/>
   * --RGB<br/>
   * --CMYK<br/>
   * a premium license is needed for this method.
   * 
   * @param path
   *            path to JPEG file.
   * @return DocImage object or null.
   */
  public DocImage NewImageJPEG(String path) {
    return getObject().NewImageJPEG(path);
  }

  /**
   * create an image from JPX/JPEG 2k file.<br/>
   * a premium license is needed for this method.
   * 
   * @param path
   *            path to JPX file.
   * @return DocImage object or null.
   */
  public DocImage NewImageJPX(String path) {
    return getObject().NewImageJPX(path);
  }

  /**
   * change page rect.<br/>
   * a premium license is needed for this method.
   * 
   * @param pageno
   *            0 based page NO.
   * @param dl
   *            delta to left, page_left += dl;
   * @param dt
   *            delta to top, page_top += dt;
   * @param dr
   *            delta to right, page_right += dr;
   * @param db
   *            delta to bottom, page_bottom += db;
   * @return true or false.
   */
  public boolean ChangePageRect(int pageno, float dl, float dt, float dr,
      float db) {
    return getObject().ChangePageRect(pageno, dl, dt, dr, db);
  }

  /**
   * set page rotate.<br/>
   * a premium license is needed for this method.
   * 
   * @param pageno
   *            0 based page NO.
   * @param degree
   *            rotate angle in degree, must be 90 * n.
   * @return true or false
   */
  public boolean setPageRotate(int pageno, int degree) {
    return getObject().SetPageRotate(pageno, degree);
  }

  @ShortName("PDFImportContext")
  public class RSPDFImportContext extends AbsObjectWrapper<ImportContext> {

    /**
     * Initializes the import context.
     */
    public void Initialize(ImportContext importContext) {
      setObject(importContext);
    }

    /**
     * Destroy context object and free memory used.
     */
    public void Destroy() {
      getObject().Destroy();
    }
  }

  @ShortName("PDFDocOutline")
  public class RSPDFDocOutline extends AbsObjectWrapper<Outline> {

    /**
     * Initializes the document outline.
     */
    public void Initialize(Outline outline) {
      setObject(outline);
    }

    public String getTitle() {
      return getObject().GetTitle();
    }

    /**
     * set label of Outline.<br/>
     * a premium license is needed for this method.
     * 
     * @param title
     *            title to set
     * @return true or false.
     */
    public boolean setTitle(String title) {
      return getObject().SetTitle(title);
    }

    /**
     * get next
     * 
     * @return
     */
    public Outline getNext() {
      return getObject().GetNext();
    }

    /**
     * get first child
     * 
     * @return
     */
    public Outline getChild() {
      return getObject().GetChild();
    }

    /**
     * get jumping page NO.
     * 
     * @return 0 based page NO.
     */
    public int getDest() {
      return getObject().GetDest();
    }

    /**
     * insert outline after of this Outline.<br/>
     * a premium license is needed for this method.
     * 
     * @param label
     *            label of new outline.
     * @param pageno
     *            0 based page NO.
     * @param top
     *            y in PDF coordinate.
     * @return true of false.
     */
    public boolean AddNext(String label, int pageno, float top) {
      return getObject().AddNext(label, pageno, top);
    }

    /**
     * insert outline as first child of this Outline.<br/>
     * a premium license is needed for this method.
     * 
     * @param label
     *            label of new outline.
     * @param pageno
     *            0 based page NO.
     * @param top
     *            y in PDF coordinate.
     * @return true or false.
     */
    public boolean AddChild(String label, int pageno, float top) {
      return getObject().AddChild(label, pageno, top);
    }

    /**
     * remove this Outline, and all children of this Outline.<br/>
     * this method connect previous Outline and next Outline.<br/>
     * a premium license is needed for this method.
     * 
     * @return true or false.
     */
    public boolean RemoveFromDoc() {
      return getObject().RemoveFromDoc();
    }
  }

  @ShortName("PDFDocFont")
  public class RSPDFDocFont extends AbsObjectWrapper<DocFont> {

    /**
     * Initializes the doc font.
     */
    public void Initialize(DocFont pdfFont) {
      setObject(pdfFont);
    }

    /**
     * get ascent
     * 
     * @return ascent based in 1, for example: 0.88f
     */
    public float getAscent() {
      return getObject().GetAscent();
    }

    /**
     * get descent
     * 
     * @return ascent based in 1, for example: -0.12f
     */
    public float getDescent() {
      return getObject().GetDescent();
    }
  }

  @ShortName("PDFDocGState")
  public class RSPPDFDocGState extends AbsObjectWrapper<DocGState> {

    /**
     * Initializes the DocGState
     */
    public void Initialize(DocGState docGState) {
      setObject(docGState);
    }

    /**
     * set alpha value for fill and other non-stroke operation
     * 
     * @param alpha
     *            range: [0, 255]
     * @return true or false
     */
    public boolean setFillAlpha(int alpha) {
      return getObject().SetFillAlpha(alpha);
    }

    /**
     * set alpha value for stroke operation
     * 
     * @param alpha
     *            range: [0, 255]
     * @return true or false
     */
    public boolean setStrokeAlpha(int alpha) {
      return getObject().SetStrokeAlpha(alpha);
    }
  }
}
Java Source Code List
