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解讀：Aspose.Slides for .NET新功能（2）——獲取有效的字體高度值

翻譯|行業資訊|編輯：李顯亮|2019-09-24 09:51:32.277|閱讀 370 次

概述：Aspose.Slides for .NET更新至最新版v19.9，本文接著給大家介紹有一些非常有趣且實用的功能——獲取有效的字體高度值，接下來通過一些簡單的示例來為大家說明一下！

Aspose.Slides for .NET是獨特的演示處理API，使應用程序能夠讀取，編寫，修改和轉換PowerPoint演示文稿。作為獨立的API，它提供了管理PowerPoint關鍵功能的功能，例如管理文本，形狀，表格和動畫，向幻燈片添加音頻和視頻，預覽幻燈片等等。

Aspose.Slides for .NET更新至最新版v19.9，本文接著給大家介紹有一些非常有趣且實用的功能——獲取有效的字體高度值，接下來通過一些簡單的示例來為大家說明一下！

點擊下載最新版Aspose.Slides for .NET

獲取有效的字體高度值

下面的示例演示在不同的表示結構級別上設置本地字體高度值之后，該部分的有效字體高度值的變化。

// 文檔目錄的路徑
string dataDir = RunExamples.GetDataDir_Text();

using (Presentation pres = new Presentation())
{
    IAutoShape newShape = pres.Slides[0].Shapes.AddAutoShape(ShapeType.Rectangle, 100, 100, 400, 75, false);
    newShape.AddTextFrame("");
    newShape.TextFrame.Paragraphs[0].Portions.Clear();

    IPortion portion0 = new Portion("Sample text with first portion");
    IPortion portion1 = new Portion(" and second portion.");

    newShape.TextFrame.Paragraphs[0].Portions.Add(portion0);
    newShape.TextFrame.Paragraphs[0].Portions.Add(portion1);

    Console.WriteLine("Effective font height just after creation:");
    Console.WriteLine("Portion #0: " + portion0.PortionFormat.GetEffective().FontHeight);
    Console.WriteLine("Portion #1: " + portion1.PortionFormat.GetEffective().FontHeight);

    pres.DefaultTextStyle.GetLevel(0).DefaultPortionFormat.FontHeight = 24;

    Console.WriteLine("Effective font height after setting entire presentation default font height:");
    Console.WriteLine("Portion #0: " + portion0.PortionFormat.GetEffective().FontHeight);
    Console.WriteLine("Portion #1: " + portion1.PortionFormat.GetEffective().FontHeight);

    newShape.TextFrame.Paragraphs[0].ParagraphFormat.DefaultPortionFormat.FontHeight = 40;

    Console.WriteLine("Effective font height after setting paragraph default font height:");
    Console.WriteLine("Portion #0: " + portion0.PortionFormat.GetEffective().FontHeight);
    Console.WriteLine("Portion #1: " + portion1.PortionFormat.GetEffective().FontHeight);

    newShape.TextFrame.Paragraphs[0].Portions[0].PortionFormat.FontHeight = 55;

    Console.WriteLine("Effective font height after setting portion #0 font height:");
    Console.WriteLine("Portion #0: " + portion0.PortionFormat.GetEffective().FontHeight);
    Console.WriteLine("Portion #1: " + portion1.PortionFormat.GetEffective().FontHeight);

    newShape.TextFrame.Paragraphs[0].Portions[1].PortionFormat.FontHeight = 18;

    Console.WriteLine("Effective font height after setting portion #1 font height:");
    Console.WriteLine("Portion #0: " + portion0.PortionFormat.GetEffective().FontHeight);
    Console.WriteLine("Portion #1: " + portion1.PortionFormat.GetEffective().FontHeight);

    pres.Save(dataDir + "SetLocalFontHeightValues.pptx",SaveFormat.Pptx);
}

與此類似的基于Java的示例：

//文檔目錄的路徑。   
String dataDir = Utils.getDataDir(SetLocalFontHeightValues.class);
           
Presentation pres = new Presentation();
 try
 {
     IAutoShape newShape = pres.getSlides().get_Item(0).getShapes().addAutoShape(ShapeType.Rectangle, 100, 100, 400, 75, false);
     newShape.addTextFrame("");
     newShape.getTextFrame().getParagraphs().get_Item(0).getPortions().clear();

     IPortion portion0 = new Portion("Sample text with first portion");
     IPortion portion1 = new Portion(" and second portion.");

     newShape.getTextFrame().getParagraphs().get_Item(0).getPortions().add(portion0);
     newShape.getTextFrame().getParagraphs().get_Item(0).getPortions().add(portion1);

     System.out.println("Effective font height just after creation:");
     System.out.println("Portion #0: " + portion0.getPortionFormat().getEffective().getFontHeight());
     System.out.println("Portion #1: " + portion1.getPortionFormat().getEffective().getFontHeight());

     pres.getDefaultTextStyle().getLevel(0).getDefaultPortionFormat().setFontHeight(24);
     System.out.println("Effective font height after setting entire presentation default font height:");
     System.out.println("Portion #0: " + portion0.getPortionFormat().getEffective().getFontHeight());
     System.out.println("Portion #1: " + portion1.getPortionFormat().getEffective().getFontHeight());

     newShape.getTextFrame().getParagraphs().get_Item(0).getParagraphFormat().getDefaultPortionFormat().setFontHeight(40);
     System.out.println("Effective font height after setting paragraph default font height:");
     System.out.println("Portion #0: " + portion0.getPortionFormat().getEffective().getFontHeight());
     System.out.println("Portion #1: " + portion1.getPortionFormat().getEffective().getFontHeight());

     newShape.getTextFrame().getParagraphs().get_Item(0).getPortions().get_Item(0).getPortionFormat().setFontHeight(55);
     System.out.println("Effective font height after setting portion #0 font height:");
     System.out.println("Portion #0: " + portion0.getPortionFormat().getEffective().getFontHeight());
     System.out.println("Portion #1: " + portion1.getPortionFormat().getEffective().getFontHeight());

     newShape.getTextFrame().getParagraphs().get_Item(0).getPortions().get_Item(1).getPortionFormat().setFontHeight(18);
     System.out.println("Effective font height after setting portion #1 font height:");
     System.out.println("Portion #0: " + portion0.getPortionFormat().getEffective().getFontHeight());
     System.out.println("Portion #1: " + portion1.getPortionFormat().getEffective().getFontHeight());
     
     pres.save(dataDir + "SetLocalFontHeightValues.pptx",SaveFormat.Pptx);
 } finally {
     if (pres != null) pres.dispose();
 }

與此類似的基于C++的示例：

//文檔目錄的路徑。 
const String outPath = u"../out/SetLocalFontHeightValues.pptx";  
  
System::SharedPtr<Presentation> pres = System::MakeObject<Presentation>();    
System::SharedPtr<IAutoShape> newShape = pres->get_Slides()->idx_get(0)->get_Shapes()->AddAutoShape(Aspose::Slides::ShapeType::Rectangle, 100.0f, 100.0f, 400.0f, 75.0f, false);    
newShape->AddTextFrame(u"");    
newShape->get_TextFrame()->get_Paragraphs()->idx_get(0)->get_Portions()->Clear(); 
   
System::SharedPtr<IPortion> portion0 = System::MakeObject<Portion>(u"Sample text with first portion");    
System::SharedPtr<IPortion> portion1 = System::MakeObject<Portion>(u" and second portion."); 
   
newShape->get_TextFrame()->get_Paragraphs()->idx_get(0)->get_Portions()->Add(portion0);    
newShape->get_TextFrame()->get_Paragraphs()->idx_get(0)->get_Portions()->Add(portion1);
   
System::Console::WriteLine(u"Effective font height just after creation:");    
System::Console::WriteLine(System::String(u"Portion #0: ") + portion0->get_PortionFormat()->GetEffective()->get_FontHeight());    
System::Console::WriteLine(System::String(u"Portion #1: ") + portion1->get_PortionFormat()->GetEffective()->get_FontHeight());  
  
pres->get_DefaultTextStyle()->GetLevel(0)->get_DefaultPortionFormat()->set_FontHeight(24.0f);    
System::Console::WriteLine(u"Effective font height after setting entire presentation default font height:");    
System::Console::WriteLine(System::String(u"Portion #0: ") + portion0->get_PortionFormat()->GetEffective()->get_FontHeight());    
System::Console::WriteLine(System::String(u"Portion #1: ") + portion1->get_PortionFormat()->GetEffective()->get_FontHeight());    

newShape->get_TextFrame()->get_Paragraphs()->idx_get(0)->get_ParagraphFormat()->get_DefaultPortionFormat()->set_FontHeight(40.0f);    
System::Console::WriteLine(u"Effective font height after setting paragraph default font height:");    
System::Console::WriteLine(System::String(u"Portion #0: ") + portion0->get_PortionFormat()->GetEffective()->get_FontHeight());    
System::Console::WriteLine(System::String(u"Portion #1: ") + portion1->get_PortionFormat()->GetEffective()->get_FontHeight());    
newShape->get_TextFrame()->get_Paragraphs()->idx_get(0)->get_Portions()->idx_get(0)->get_PortionFormat()->set_FontHeight(55.0f);  
  
System::Console::WriteLine(u"Effective font height after setting portion #0 font height:");    
System::Console::WriteLine(System::String(u"Portion #0: ") + portion0->get_PortionFormat()->GetEffective()->get_FontHeight());    
System::Console::WriteLine(System::String(u"Portion #1: ") + portion1->get_PortionFormat()->GetEffective()->get_FontHeight());    
newShape->get_TextFrame()->get_Paragraphs()->idx_get(0)->get_Portions()->idx_get(1)->get_PortionFormat()->set_FontHeight(18.0f); 
   
System::Console::WriteLine(u"Effective font height after setting portion #1 font height:");    
System::Console::WriteLine(System::String(u"Portion #0: ") + portion0->get_PortionFormat()->GetEffective()->get_FontHeight());    
System::Console::WriteLine(System::String(u"Portion #1: ") + portion1->get_PortionFormat()->GetEffective()->get_FontHeight());    

pres->Save(outPath, Aspose::Slides::Export::SaveFormat::Pptx);

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