Destinations.cs
// 完毕:
using System;
using System.IO;
using System.Drawing;
using GrapeCity.Documents.Pdf;
using GrapeCity.Documents.Text;
using GrapeCity.Documents.Drawing;
using GrapeCity.Documents.Pdf.Annotations;
using GrapeCity.Documents.Pdf.Actions;
using DsPdfWeb.Demos.Common;
namespace DsPdfWeb.Demos.Basics
{
// 演示如何创建目的地并将其与
// 概述文档正文中的节点或链接。
public class Destinations
{
public int CreatePDF(Stream stream)
{
var doc = new GcPdfDocument();
var page0 = doc.NewPage();
var page1 = doc.NewPage();
var page2 = doc.NewPage();
var mainNote = Util.AddNote(
"这是第 1 页。\n\n\n" +
"",
page0);
Util.AddNote(
"这是第 2 页。",
page1);
var noteOnPage2 = Util.AddNote(
"第 2 页的注释 2。",
page1, new RectangleF(300, 400, 200, 300));
Util.AddNote(
"这是第 3 页",
page2);
var noteOnPage3 = Util.AddNote(
"这是第 3 页上的较长\n(尽管不是很长)\n注释。",
page2, new RectangleF(200, 440, 200, 300));
// 大纲树中的目的地:
// DestinationFit:适合整个页面:
var on1 = new OutlineNode("Page 1", new DestinationFit(page0));
doc.Outlines.Add(on1);
var on2 = new OutlineNode("Page 2", new DestinationFit(page1));
doc.Outlines.Add(on2);
// DestinationXYZ:允许您指定顶部/左侧坐标和缩放级别(1 表示 100%):
on2.Children.Add(new OutlineNode("Note 2, zoom 200%", new DestinationXYZ(page1, noteOnPage2.X, noteOnPage2.Y, 2)));
on2.Children.Add(new OutlineNode("Zoom 100%", new DestinationXYZ(page1, null, null, 1)));
// 添加返回第 1 页的链接:
on2.Children.Add(new OutlineNode("Back to page 1", new DestinationFit(page0)));
var on3 = new OutlineNode("Page 3", new DestinationFit(page2));
doc.Outlines.Add(on3);
// DestinationFitR:适合页面上的矩形:
on3.Children.Add(new OutlineNode("Zoom to note on page 3", new DestinationFitR(2, noteOnPage3)));
// 添加返回第 1 页和第 2 页的链接:
on3.Children.Add(new OutlineNode("Go to page 2", new DestinationFit(page1)));
on3.Children.Add(new OutlineNode("Go to page 1", new DestinationFit(page0)));
// 文档正文中的目标(重用大纲中的目标):
// 转到第 2 页:
var rc = Util.AddNote("Go to page 2", page0, new RectangleF(72, mainNote.Bottom + 18, 200, 72));
page0.Annotations.Add(new LinkAnnotation(rc, on2.Dest));
// 转到第 3 页:
rc = Util.AddNote("Go to page 3", page0, new RectangleF(72, rc.Bottom + 18, 200, 72));
page0.Annotations.Add(new LinkAnnotation(rc, on3.Dest));
// 还可以命名目标并将其添加到文档的 NamedDestinations 字典中。
doc.NamedDestinations.Add("page1", new DestinationFit(page0));
doc.NamedDestinations.Add("page2", new DestinationFit(page1));
doc.NamedDestinations.Add("page3", new DestinationFit(page2));
// 然后可以使用 DestinationRef 类引用它们,这里我们将它们添加到大纲中:
var onNamed = new OutlineNode("Named destinations", (DestinationBase)null);
doc.Outlines.Add(onNamed);
onNamed.Children.Add(new OutlineNode("Named: page1", new DestinationRef("page1")));
onNamed.Children.Add(new OutlineNode("Named: page2", new DestinationRef("page2")));
onNamed.Children.Add(new OutlineNode("Named: page3", new DestinationRef("page3")));
// 完毕:
doc.Save(stream);
return doc.Pages.Count;
}
}
}