static void Main(string[] args)
{
using (var presentationDocument =
DocumentFormat.OpenXml.Packaging.PresentationDocument.Open("测试.pptx", false))
{
var presentationPart = presentationDocument.PresentationPart;
var presentation = presentationPart.Presentation;
// 先获取页面
var slideIdList = presentation.SlideIdList;
foreach (var slideId in slideIdList.ChildElements.OfType <SlideId>())
{
// 获取页面内容
SlidePart slidePart = (SlidePart)presentationPart.GetPartById(slideId.RelationshipId);
var slide = slidePart.Slide;
foreach (var shape in
slide
.Descendants <DocumentFormat.OpenXml.Presentation.Shape>())
{
var defaultTextStyle = presentation.DefaultTextStyle;
var textBody = shape.TextBody;
var textBodyListStyle = textBody.ListStyle;
Debug.Assert((textBodyListStyle?.ChildElements.Count ?? 0) == 0);
var paragraph = textBody.Descendants <Paragraph>().First();
var level = paragraph.ParagraphProperties?.Level?.Value ?? 1;
Debug.Assert(level == 1);
Debug.Assert(paragraph.ParagraphProperties == null);
var paragraphProperties = defaultTextStyle.Level1ParagraphProperties;
foreach (var run in paragraph.Descendants <Run>())
{
var runProperties = run.RunProperties;
var eastAsianFont = runProperties.GetFirstChild <EastAsianFont>();
Debug.Assert(eastAsianFont == null);
eastAsianFont = paragraphProperties.GetFirstChild <DefaultRunProperties>()
.GetFirstChild <EastAsianFont>();
var typeface = eastAsianFont.Typeface.Value;
Console.WriteLine($"字体是 {typeface}");
if (ThemeFontTypePattern.IsMatch(typeface))
{
// 进入这个分支，字体是 +mn-ea 字体
// 这个字体的意思里面 mn 表示 Body 字体
// 而 mj 表示 Title 字体，也就是 Major 字体
// 后续的 ea 和 lt 等表示采用东亚文字或拉丁文等
// 此时需要获取字体主题
var fontScheme = GetFontScheme(slidePart);
FontCollectionType fontCollection;
// mn 的 n 传入字符串是 +mn-ea 也就是第三个字符
if (typeface[2] == 'n')
{
fontCollection = fontScheme.MinorFont;
}
else
{
fontCollection = fontScheme.MajorFont;
}
FontLang fontLang = FontLang.Unknown;
if (typeface.Contains("lt"))
{
fontLang = FontLang.LatinFont;
}
else if (typeface.Contains("cs"))
{
fontLang = FontLang.ComplexScriptFont;
}
else if (typeface.Contains("ea"))
{
fontLang = FontLang.EastAsianFont;
}
Debug.Assert(fontScheme != null);
var language = runProperties.Language;
Console.WriteLine("字体是" + GetFontFromFontCollection(GetScript(language), fontLang,
fontCollection));
}
else
{
// 这就是字体本身了
Console.WriteLine("字体是" + typeface);
}
}
}
}
}
}
private static string GetFontFromFontCollection(string scriptTag, FontLang themeTypefaceFontLang,
FontCollectionType fontCollection)
{
if (fontCollection == null)
{
return(string.Empty);
}
// 假定存在对应的语言的字体，那么获取对应的字体
// 存放方式如
/*
* <a:majorFont xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main">
* <a:latin typeface="Calibri Light" panose="020F0302020204030204" />
* <a:ea typeface="" />
* <a:cs typeface="" />
* <a:font script="Jpan" typeface="ＭＳ Ｐゴシック" />
* <a:font script="Hang" typeface="맑은 고딕" />
* <a:font script="Hans" typeface="宋体" />
* </a:majorFont>
* <a:minorFont xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main">
* <a:latin typeface="Calibri" panose="020F0502020204030204" />
* <a:ea typeface="" />
* <a:cs typeface="" />
* <a:font script="Jpan" typeface="ＭＳ Ｐゴシック" />
* <a:font script="Hang" typeface="맑은 고딕" />
* <a:font script="Hans" typeface="宋体" />
* </a:minorFont>
*/
foreach (var font in fontCollection.Elements <SupplementalFont>())
{
// <a:font script="Hang" typeface="맑은 고딕" />
if (string.Equals(font.Script, scriptTag, StringComparison.OrdinalIgnoreCase))
{
return(font.Typeface);
}
}
// 也就是先尝试获取语言文化的，如果获取不到，就采用对应语言的
TextFontType textFont = null;
switch (themeTypefaceFontLang)
{
case FontLang.LatinFont:
textFont = fontCollection.LatinFont;
break;
case FontLang.EastAsianFont:
textFont = fontCollection.EastAsianFont;
break;
case FontLang.ComplexScriptFont:
textFont = fontCollection.ComplexScriptFont;
break;
case FontLang.SymbolFont:
// 特别不处理，为什么？
// 在 fontCollection 是不存在的 SymbolFont 的
break;
default:
throw new ArgumentOutOfRangeException(nameof(themeTypefaceFontLang), themeTypefaceFontLang, null);
}
var typeface = textFont?.Typeface?.Value;
if (!string.IsNullOrEmpty(typeface))
{
return(typeface);
}
Debug.Assert(false, "找不到字体");
return(null);
}
