tablecliper.java

外国人写的Java打印程序

    //scale the Graphics
    newGraphics2D.scale((double)(tableScale)/100.0,(double)(tableScale)/100.0);

    //if print head,we should print head and table
    //otherwise,we just need to pring the table
    if(displayHeaderOnPage(positionY))
    {
      //if need to print a table head
      JTableHeader header = table.getTableHeader();
      if((header.getHeight() == 0) || (header.getWidth() == 0))
        header.setSize(header.getPreferredSize());

      //get the height of the header
      //after print the head,the offsetY need to change into (offsetY + headerHeight)
      int headerHeight = header.getHeight();

      //show the offset as the real size,so multiply the table scale with offset
      newGraphics.translate((int)(offsetX * 100.0 / tableScale) - positionX,(int)(offsetY * 100.0 / tableScale));

      newGraphics.clipRect(positionX,0,size.width,size.height + headerHeight);

      header.paint(newGraphics);

      //draw v(|) line with table head
      newGraphics.setColor(Color.gray);
      newGraphics.drawLine(positionX,0,positionX,headerHeight);

      //draw h(-) line with table head
      newGraphics.setColor(Color.gray);
      newGraphics.drawLine(positionX,0,positionX + size.width,0);

      //draw the table
      newGraphics.translate(0,headerHeight - positionY);
      newGraphics.clipRect(positionX,positionY,size.width,size.height);

      table.paint(newGraphics);

      //draw h-line with table head
      newGraphics.setColor(Color.gray);
      newGraphics.drawLine(positionX,positionY,positionX,size.height + positionY);

      //restore the translate
      newGraphics.translate(0,positionY - headerHeight);
      newGraphics.translate((int)(positionX - offsetX * (double)(100.0 / tableScale)),(int)(-offsetY *(double)(100.0 / tableScale)));
    }
    //print table without head
    else
    {
      //show the offset as the real size,so multiply the table scale with offset
      newGraphics.translate((int)(offsetX * 100.0 / tableScale - positionX),(int)(offsetY * 100.0 / tableScale - positionY));
      //as i said,size has been measured with table scale,so there needn't
      newGraphics.clipRect(positionX,positionY,size.width,size.height);

      table.paint(newGraphics);

      //draw v-line without table head
      newGraphics.setColor(Color.gray);
      newGraphics.drawLine(positionX,positionY,positionX + size.width,positionY);

      //draw h-line without table head
      newGraphics.setColor(Color.gray);
      newGraphics.drawLine(positionX,positionY,positionX,size.height + positionY);

      //restore the translate
      newGraphics.translate((int)(positionX - offsetX *(double)(100.0 / tableScale)),(int)(positionY - offsetY *(double)(100.0 / tableScale)));
    }

    //restore the scale
    newGraphics2D.scale((double)(100.0 / tableScale),(double)(100.0/tableScale));

    //restore the translate
    if(tableAlignment == 1)
      newGraphics.translate((int)(((double)(size.width * tableScale / 100) - pageFormat.getImageableWidth())/2),0);
    else if(tableAlignment == 2)
      newGraphics.translate((int)((double)(size.width * tableScale / 100) - pageFormat.getImageableWidth()),0);

    //restore the clip
    newGraphics.setClip(clipRect);

    //translate for the main paper
    newGraphics.translate(0,paperHeight);
    allOffsetX += 0;
    allOffsetY += paperHeight;

    //if foot is exist,show it on the paper
    if(showFoot)
    {
      int footWidth = (int)foot.getWidth();
      int footHeight = (int)foot.getHeight();

      int footImageableX = (int)foot.getImageableX();
      int footImageableY = (int)foot.getImageableY();
      int footImageableWidth = (int)foot.getImageableWidth();
      int footImageableHeight = (int)foot.getImageableHeight();

      newGraphics.setColor(Color.white);
      newGraphics.fillRect(0,0,footWidth,footHeight);

      //print the border of the foot
      if(foot.getBorderType() == 0)
      {
        newGraphics.setColor(Color.black);
        newGraphics.drawLine(footImageableX,footImageableY,
          footImageableWidth + footImageableX,footImageableY);
      }
      else if(foot.getBorderType() == 1)
      {
        newGraphics.setColor(Color.black);
        newGraphics.drawRect(footImageableX,footImageableY,
          footImageableWidth,footImageableHeight);
      }

      //print string of foot
      StringBuffer content;
      StringBuffer bakContent;

      Date localDate  = new Date();
      SimpleDateFormat sdf =  new SimpleDateFormat ("yyyy-MM-dd");
      String localNowDate = sdf.format(localDate);

      if(foot.leftContent != "")
      {
        content = new StringBuffer(foot.leftContent);
        bakContent = new StringBuffer(foot.leftContent);

        while( foot.leftContent.indexOf('@') != -1
          && foot.leftContent.indexOf('@') != foot.leftContent.length() - 1)
        {
          int flag = foot.leftContent.indexOf('@');
          switch(foot.leftContent.charAt(flag + 1))
          {
            case 'd':
              content.replace(flag,flag + 2,localNowDate);
              foot.leftContent = content.toString();
              break;

            case 'p':
              content.replace(flag,flag + 2,
                "" + this.getCurrentNumberOfPages(positionX,positionY));
              foot.leftContent = content.toString();
              break;
            case 't':
              content.replace(flag,flag + 2,
                "" + this.getNumberOfPages());
              foot.leftContent = content.toString();
              break;
            default:
              content.replace(flag,flag + 1,
                "#$");
              foot.leftContent = content.toString();
              break;
          }
        }

        for(int index = 0;index < content.length() - 1;index++)
          if(content.charAt(index) == '#' && content.charAt(index + 1) == '$')
            content.replace(index,index + 2,"@");

        foot.leftContent = bakContent.toString();

        newGraphics.setColor(Color.black);
        newGraphics.drawString(content.toString(),footImageableX + 10,footImageableY + (footImageableHeight / 2 + 6));
      }

      if(foot.midContent != "")
      {
        content = new StringBuffer(foot.midContent);
        bakContent = new StringBuffer(foot.midContent);

        while( foot.midContent.indexOf('@') != -1
          && foot.midContent.indexOf('@') != foot.midContent.length() - 1)
        {
          int flag = foot.midContent.indexOf('@');
          switch(foot.midContent.charAt(flag + 1))
          {
            case 'd':
              content.replace(flag,flag + 2,localNowDate);
              foot.midContent = content.toString();
              break;
            case 'p':
              content.replace(flag,flag + 2,
                "" + this.getCurrentNumberOfPages(positionX,positionY));
              foot.midContent = content.toString();
              break;
            case 't':
              content.replace(flag,flag + 2,
                "" + this.getNumberOfPages());
              foot.midContent = content.toString();
              break;
            default:
              content.replace(flag,flag + 1,
                "#$");
              foot.midContent = content.toString();
              break;
          }
        }

        for(int index = 0;index < content.length() - 1;index++)
          if(content.charAt(index) == '#' && content.charAt(index + 1) == '$')
            content.replace(index,index + 2,"@");

        foot.midContent = bakContent.toString();

        newGraphics.setColor(Color.black);
        newGraphics.drawString(content.toString(),footImageableX + (footImageableWidth / 2) - content.toString().length() * 4,footImageableY + (footImageableHeight / 2 + 6));
      }

      if(foot.rightContent != "")
      {
        content = new StringBuffer(foot.rightContent);
        bakContent = new StringBuffer(foot.rightContent);

        while( foot.rightContent.indexOf('@') != -1
          && foot.rightContent.indexOf('@') != foot.rightContent.length() - 1)
        {
          int flag = foot.rightContent.indexOf('@');
          switch(foot.rightContent.charAt(flag + 1))
          {
            case 'd':
              content.replace(flag,flag + 2,localNowDate);
              foot.rightContent = content.toString();
              break;
            case 'p':
              content.replace(flag,flag + 2,
                "" + this.getCurrentNumberOfPages(positionX,positionY));
              foot.rightContent = content.toString();
              break;
            case 't':
              content.replace(flag,flag + 2,
                "" + this.getNumberOfPages());
              foot.rightContent = content.toString();
              break;
            default:
              content.replace(flag,flag + 1,
                "#$");
              foot.rightContent = content.toString();
              break;
          }
        }

        for(int index = 0;index < content.length() - 1;index++)
          if(content.charAt(index) == '#' && content.charAt(index + 1) == '$')
            content.replace(index,index + 2,"@");

        foot.rightContent = bakContent.toString();

        newGraphics.setColor(Color.black);
        newGraphics.drawString(content.toString(),footImageableX + footImageableWidth - content.toString().length() * 8,footImageableY + (footImageableHeight / 2 + 6));
      }

      newGraphics.translate(0,footHeight);
      allOffsetX += 0;
      allOffsetY += footHeight;
    }

    //restore all offset
    newGraphics.translate(-allOffsetX,-allOffsetY);
  }

  //decide whether display the header or not
  protected boolean displayHeaderOnPage(int positionY)
  {
    if((headerStatus == 0) || ((headerStatus == 1) && positionY == 0))
      return true;
    else
      return false;
  }

  //get the total page numbers
  public int getNumberOfPages()
  {
    Dimension size = null;
    int tableWidth = table.getWidth();
    int tableHeight = table.getHeight();
    int positionX = 0;
    int positionY = 0;

    int pageIndex = 0;
    while(positionY < tableHeight)
    {
      positionX = 0;
      while(positionX < tableWidth)
      {
        size = getPrintSize(positionX,positionY);
        positionX += size.width;
        pageIndex++;
      }
      positionY += size.height;
    }
    return pageIndex;
  }

  //get current page number
  public int getCurrentNumberOfPages(int currentPositionX,int currentPositionY)
  {
    Dimension size = null;
    int tableWidth = table.getWidth();
    int tableHeight = table.getHeight();
    int positionX = 0;
    int positionY = 0;

    int pageIndex = 0;
    while(positionY < tableHeight)
    {
      positionX = 0;
      while(positionX < tableWidth)
      {
        size = getPrintSize(positionX,positionY);
        pageIndex++;
        System.out.println(currentPositionX);
        System.out.println(currentPositionY);
        if((currentPositionX == positionX) && (currentPositionY == positionY))
          return pageIndex;
        positionX += size.width;
      }
      positionY += size.height;
    }
    return 0;
  }

  //get the printable(the canvas)
  public Printable getPrintable(int index)
  {
    return this;
  }

  //get the pageFormat(the layout of the paper)
  public PageFormat getPageFormat(int index)
  {
    return (PageFormat)pageFormat;
  }
}