我正在使用 jQuery DataTables 插件来创建 HTML 表格，并使用 DataTables TableTools 来生成我的表格数据的 PDF。现在工作正常我想在生成的 PDF 中添加页眉和页脚。PDF 生成代码使用 AlivePDF 编写在 ActonScript3 文件中。所以任何人都可以帮助我解决这个问题，我如何在使用 AlivePDF 的 ActionScript3 文件中添加页眉和页脚代码。下面是代码：
package {
import flash.display.Stage;
import flash.display.Sprite;
import flash.display.LoaderInfo;
import flash.display.StageScaleMode;
import flash.events.*;
import flash.display.StageAlign;
import flash.display.StageScaleMode;
import flash.external.ExternalInterface;
import flash.system.Security;
import flash.utils.*;
import flash.system.System;
import flash.net.FileReference;
import flash.net.FileFilter;
/* PDF imports */
import org.alivepdf.pdf.PDF;
import org.alivepdf.data.Grid;
import org.alivepdf.data.GridColumn;
import org.alivepdf.layout.Orientation;
import org.alivepdf.layout.Size;
import org.alivepdf.layout.Unit;
import org.alivepdf.display.Display;
import org.alivepdf.saving.Method;
import org.alivepdf.fonts.FontFamily;
import org.alivepdf.fonts.Style;
import org.alivepdf.fonts.CoreFont;
import org.alivepdf.colors.RGBColor;
public class ZeroClipboard extends Sprite {
private var domId:String = '';
private var button:Sprite;
private var clipText:String = 'blank';
private var fileName:String = '';
private var action:String = 'copy';
private var incBom:Boolean = true;
private var charSet:String = 'utf8';
public function ZeroClipboard() {
// constructor, setup event listeners and external interfaces
stage.scaleMode = StageScaleMode.EXACT_FIT;
flash.system.Security.allowDomain("*");
// import flashvars
var flashvars:Object = LoaderInfo( this.root.loaderInfo ).parameters;
domId = flashvars.id.split("\\").join("\\\\");
// Validate id to prevent scripting attacks. The id given is an integer
if ( domId !== parseInt( domId, 10 ).toString() ) {
throw new Error( 'Invalid DOM id' );
}
// invisible button covers entire stage
button = new Sprite();
button.buttonMode = true;
button.useHandCursor = true;
button.graphics.beginFill(0x00FF00);
button.graphics.drawRect(0, 0, stage.stageWidth, stage.stageHeight);
button.alpha = 0.0;
addChild(button);
button.addEventListener(MouseEvent.CLICK, function(event:Event):void {
clickHandler(event);
} );
button.addEventListener(MouseEvent.MOUSE_OVER, function(event:Event):void {
ExternalInterface.call( 'ZeroClipboard_TableTools.dispatch', domId, 'mouseOver', null );
} );
button.addEventListener(MouseEvent.MOUSE_OUT, function(event:Event):void {
ExternalInterface.call( 'ZeroClipboard_TableTools.dispatch', domId, 'mouseOut', null );
} );
button.addEventListener(MouseEvent.MOUSE_DOWN, function(event:Event):void {
ExternalInterface.call( 'ZeroClipboard_TableTools.dispatch', domId, 'mouseDown', null );
} );
button.addEventListener(MouseEvent.MOUSE_UP, function(event:Event):void {
ExternalInterface.call( 'ZeroClipboard_TableTools.dispatch', domId, 'mouseUp', null );
} );
// External functions - readd whenever the stage is made active for IE
addCallbacks();
stage.addEventListener(Event.ACTIVATE, addCallbacks);
// signal to the browser that we are ready
ExternalInterface.call( 'ZeroClipboard_TableTools.dispatch', domId, 'load', null );
}
public function addCallbacks (evt:Event = null):void {
ExternalInterface.addCallback("setHandCursor", setHandCursor);
ExternalInterface.addCallback("clearText", clearText);
ExternalInterface.addCallback("setText", setText);
ExternalInterface.addCallback("appendText", appendText);
ExternalInterface.addCallback("setFileName", setFileName);
ExternalInterface.addCallback("setAction", setAction);
ExternalInterface.addCallback("setCharSet", setCharSet);
ExternalInterface.addCallback("setBomInc", setBomInc);
}
public function setCharSet(newCharSet:String):void {
if ( newCharSet == 'UTF16LE' ) {
charSet = newCharSet;
} else {
charSet = 'UTF8';
}
}
public function setBomInc(newBomInc:Boolean):void {
incBom = newBomInc;
}
public function clearText():void {
clipText = '';
}
public function appendText(newText:String):void {
clipText += newText;
}
public function setText(newText:String):void {
clipText = newText;
}
public function setFileName(newFileName:String):void {
fileName = newFileName;
}
public function setAction(newAction:String):void {
action = newAction;
}
public function setHandCursor(enabled:Boolean):void {
// control whether the hand cursor is shown on rollover (true)
// or the default arrow cursor (false)
button.useHandCursor = enabled;
}
private function clickHandler(event:Event):void {
var fileRef:FileReference = new FileReference();
fileRef.addEventListener(Event.COMPLETE, saveComplete);
if ( action == "save" ) {
/* Save as a file */
if ( charSet == 'UTF16LE' ) {
fileRef.save( strToUTF16LE(clipText), fileName );
} else {
fileRef.save( strToUTF8(clipText), fileName );
}
} else if ( action == "pdf" ) {
/* Save as a PDF */
var pdf:PDF = configPdf();
fileRef.save( pdf.save( Method.LOCAL ), fileName );
} else {
/* Copy the text to the clipboard. Note charset and BOM have no effect here */
System.setClipboard( clipText );
ExternalInterface.call( 'ZeroClipboard_TableTools.dispatch', domId, 'complete', clipText );
}
}
private function saveComplete(event:Event):void {
ExternalInterface.call( 'ZeroClipboard_TableTools.dispatch', domId, 'complete', clipText );
}
private function getProp( prop:String, opts:Array ):String
{
var i:int, iLen:int;
for ( i=0, iLen=opts.length ; i<iLen ; i++ )
{
if ( opts[i].indexOf( prop+":" ) != -1 )
{
return opts[i].replace( prop+":", "" );
}
}
return "";
}
private function configPdf():PDF
{
var
pdf:PDF,
i:int, iLen:int,
splitText:Array = clipText.split("--/TableToolsOpts--\n"),
opts:Array = splitText[0].split("\n"),
dataIn:Array = splitText[1].split("\n"),
aColRatio:Array = getProp( 'colWidth', opts ).split('\t'),
title:String = getProp( 'title', opts ),
message:String = getProp( 'message', opts ),
orientation:String = getProp( 'orientation', opts ),
size:String = getProp( 'size', opts ),
iPageWidth:int = 0,
dataOut:Array = [],
columns:Array = [],
headers:Array,
y:int = 0;
/* Create the PDF */
pdf = new PDF( Orientation[orientation.toUpperCase()], Unit.MM, Size[size.toUpperCase()] );
pdf.setDisplayMode( Display.FULL_WIDTH );
pdf.addPage();
iPageWidth = pdf.getCurrentPage().w-20;
pdf.textStyle( new RGBColor(0), 1 );
/* Add the title / message if there is one */
pdf.setFont( new CoreFont(FontFamily.HELVETICA), 14 );
if ( title != "" )
{
pdf.writeText(11, title+"\n");
}
pdf.setFont( new CoreFont(FontFamily.HELVETICA), 11 );
if ( message != "" )
{
pdf.writeText(11, message+"\n");
}
/* Data setup. Split up the headers, and then construct the columns */
for ( i=0, iLen=dataIn.length ; i<iLen ; i++ )
{
if ( dataIn[i] != "" )
{
dataOut.push( dataIn[i].split("\t") );
}
}
headers = dataOut.shift();
for ( i=0, iLen=headers.length ; i<iLen ; i++ )
{
columns.push( new GridColumn( " \n"+headers[i]+"\n ", i.toString(), aColRatio[i]*iPageWidth, 'C' ) );
}
var grid:Grid = new Grid(
dataOut, /* 1. data */
iPageWidth, /* 2. width */
100, /* 3. height */
new RGBColor (0xE0E0E0), /* 4. headerColor */
new RGBColor (0xFFFFFF), /* 5. backgroundColor */
true, /* 6. alternateRowColor */
new RGBColor ( 0x0 ), /* 7. borderColor */
.1, /* 8. border alpha */
null, /* 9. joins */
columns /* 10. columns */
);
pdf.addGrid( grid, 0, y );
return pdf;
}
/*
* Function: strToUTF8
* Purpose: Convert a string to the output utf-8
* Returns: ByteArray
* Inputs: String
*/
private function strToUTF8( str:String ):ByteArray {
var utf8:ByteArray = new ByteArray();
/* BOM first */
if ( incBom ) {
utf8.writeByte( 0xEF );
utf8.writeByte( 0xBB );
utf8.writeByte( 0xBF );
}
utf8.writeUTFBytes( str );
return utf8;
}
/*
* Function: strToUTF16LE
* Purpose: Convert a string to the output utf-16
* Returns: ByteArray
* Inputs: String
* Notes: The fact that this function is needed is a little annoying. Basically, strings in
* AS3 are UTF-16 (with surrogate pairs and everything), but characters which take up less
* than 8 bytes appear to be stored as only 8 bytes. This function effective adds the
* padding required, and the BOM
*/
private function strToUTF16LE( str:String ):ByteArray {
var utf16:ByteArray = new ByteArray();
var iChar:uint;
var i:uint=0, iLen:uint = str.length;
/* BOM first */
if ( incBom ) {
utf16.writeByte( 0xFF );
utf16.writeByte( 0xFE );
}
while ( i < iLen ) {
iChar = str.charCodeAt(i);
if ( iChar < 0xFF ) {
/* one byte char */
utf16.writeByte( iChar );
utf16.writeByte( 0 );
} else {
/* two byte char */
utf16.writeByte( iChar & 0x00FF );
utf16.writeByte( iChar >> 8 );
}
i++;
}
return utf16;
}
}
}