PHP, 原创,

PHPOffice\PHPPresentation添加背景格式（图案填充）功能

使用PHPPresentation时我们发现，该开源软件竟然不支持图案填充功能，于是就自己补充了下，（本想将自己代码贡献给PHPOffice官方，因下载下来的开发版本无法通过单元测试，只能暂时写到此处供参考）

以下方式可以使PHPPresentation支持背景图案填充。

1.首先创建背景填充类文件 PHPOffice/PHPPresentation/src/PhpPresentation/Slide/Background/FillType.php

代码如下

<?php
/**
 * Created by chenxue4076@163.com.
 * User: chenxue4076@163.com
 * Date: 2019/02/27
 * Time: 14:46
 * File name: FillType.php
 */
namespace PhpOffice\PhpPresentation\Slide\Background;

use PhpOffice\PhpPresentation\Slide\AbstractBackground;
use PhpOffice\PhpPresentation\Style\Fill as StyleFill;

class FillType extends AbstractBackground
{
    const FILL_PATTERN_BACKGROUND = array(
        "cross",
        "dashDnDiag",       //dashed downward diagonal  下对角虚线
        "dashHorz",         //dashed horizontal         横虚线
        "dashUpDiag",       //dashed upward diagonal    上对角虚线
        "dashVert",         //dashed vertical           竖虚线
        "diagBrick",        //diagonal brick            对角砖型
        "diagCross",
        "divot",            //divot                     草皮
        "dkDnDiag",         //dark downward diagonal    深色下对角线
        "dkHorz",           //dark horizontal           深色横线
        "dkUpDiag",         //dark upward diagonal      深色上对角线
        "dkVert",           //dark vertical             深色竖线
        "dnDiag",
        "dotDmnd",          //dotted diamond            点式菱形
        "dotGrid",          //dotted grid               虚线网格
        "horz",
        "horzBrick",        //horizontal brick          横向砖型
        "lgCheck",          //large checker board       大棋盘
        "lgConfetti",       //large confetti            大纸屑
        "lgGrid",           //large grid                大网格
        "ltDnDiag",         //light downward diagonal   浅色下对角线
        "ltHorz",           //light horizontal          浅色横线
        "ltUpDiag",         //light upward diagonal     浅色上对角线
        "ltVert",           //light vertical            浅色竖线
        "narHorz",          //narrow horizontal         窄横线
        "narVert",          //narrow vertical           窄竖线
        "openDmnd",         //open diamond              轮廓式菱形？
        "pct5",             //5%
        "pct10",            //10%
        "pct20",            //20%
        "pct25",            //25%
        "pct30",            //30%
        "pct40",            //40%
        "pct50",            //50%
        "pct60",            //60%
        "pct70",            //70%
        "pct75",            //75%
        "pct80",            //80%
        "pct90",            //90%
        "plaid",            //plaid                     苏格兰方格
        "shingle",          //shingle卵石               瓦形
        "smCheck",          //small checker board       小棋盘
        "smConfetti",       //small confetti            小纸屑
        "smGrid",           //small grid                小网格
        "solidDmnd",        //solid diamond             实心菱形
        "sphere",           //ball                      球体
        "trellis",          //trellises                 棚架
        "upDiag",
        "vert",
        "wave",             //wave                      波浪
        "wdDnDiag",         //wide downward diagonal    宽下对角线
        "wdUpDiag",         //wide upward diagonal      宽上对角线
        "weave",            //weave                     编织物
        "zigZag"            //zig zag                   之字形
    );
    /**
     * @var StyleFill
     */
    protected $fill;

    /**
     * @param StyleFill|null $fill
     * @return $this
     */
    public function setFillBackground(StyleFill $fill = null)
    {
        $this->fill = $fill;
        return $this;
    }

    /**
     * @return StyleFill
     */
    public function getFillBackground()
    {
        return $this->fill;
    }
}

2.修改文件
PHPOffice/PHPPresentation/src/PhpPresentation/Writer/PowerPoint2007/AbstractSlide.php

找到函数 writeSlideBackground

在下面代码前

// > p:bg
$objWriter->endElement();

添加判断代码

//chenxue4076@163.com add FillType
if($oBackground instanceof Slide\Background\FillType) {
     // p:bgPr
     $objWriter->startElement('p:bgPr');
     $this->writePatternFill($objWriter, $oBackground->getFillBackground());
     // > p:bgPr
     $objWriter->endElement();
}
//chenxue4076@163.com add FillType end

3.修改文件
PHPOffice/PHPPresentation/src/PhpPresentation/Writer/PowerPoint2007/AbstractDecoratorWriter.php

1)顶部添加引用

use PhpOffice\PhpPresentation\Slide\Background\FillType;

2) 找到函数 writePatternFill

在代码后面

// a:pattFill
$objWriter->startElement('a:pattFill');

添加如下代码

//chenxue4076@163.com add fill style
if( in_array($pFill->getFillType(), FillType::FILL_PATTERN_BACKGROUND)) {
    $objWriter->writeAttribute('prst', $pFill->getFillType());
}
//chenxue4076@163.com add fill style end

经过以上三个文件的修改，就可以使用图案填充了，图案填充的代码调用如下

/**
 * @param PhpOffice\PhpPresentation\Slide $oSlide
 * @param string $fillType "pct5","pct10","pct20","pct25","pct30","pct40","pct50","pct60","pct70","pct75","pct80","pct90","horz","vert","ltHorz","ltVert","dkHorz","dkVert","narHorz","narVert","dashHorz","dashVert","cross","dnDiag","upDiag","ltDnDiag","ltUpDiag","dkDnDiag","dkUpDiag","wdDnDiag","wdUpDiag","dashDnDiag","dashUpDiag","diagCross","smCheck","lgCheck","smGrid","lgGrid","dotGrid","smConfetti","lgConfetti","horzBrick","diagBrick","solidDmnd","openDmnd","dotDmnd","plaid","sphere","weave","divot","shingle","wave","trellis","zigZag"
 * @param string $startColor
 * @param string $endColor
 * @return PhpOffice\PhpPresentation\Slide $oSlide
 * @throws Exception
 */
protected function shapeFillBackground($oSlide, $fillType, $startColor, $endColor)
{
    $fill = new Fill();
    $fill->setFillType($fillType)->setStartColor(new Color($startColor))->setEndColor(new Color($endColor));
    $oBkgFill = new PhpOffice\PhpPresentation\Slide\Background\FillType();
    $oBkgFill->setFillBackground($fill);
    $oSlide->setBackground($oBkgFill);
    return $oSlide;
}

完成。

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