AnnotationTypes.cs
// 完毕:
using System;
using System.IO;
using System.Drawing;
using GrapeCity.Documents.Pdf;
using GrapeCity.Documents.Text;
using GrapeCity.Documents.Pdf.Annotations;
namespace DsPdfWeb.Demos.Basics
{
// 演示如何向 PDF 文档添加注释。
public class AnnotationTypes
{
public int CreatePDF(Stream stream)
{
var doc = new GcPdfDocument();
var page = doc.NewPage();
var g = page.Graphics;
// 注释作者的用户名:
var user1 = "杰米·史密斯";
var user2 = "简·多纳休";
var noteWidth = 72 * 4;
var gap = 8;
var rc = Common.Util.AddNote(
"此示例演示了可以使用 GcDocs.PDF 创建的某些类型的注释。\n" +
"请注意,某些注释类型可能不会在某些查看器(例如内置浏览器查看器)中显示。" +
"要查看此页面上的所有注释,请在 Acrobat Reader 或其他功能齐全的 PDF 查看器中打开它。" +
"",
page);
// 文字注释:
var ip = new PointF(rc.X, rc.Bottom + gap);
rc = Common.Util.AddNote(
"红色文本注释位于此注释的右侧。",
page, new RectangleF(ip.X, ip.Y, noteWidth, 100));
var textAnnot = new TextAnnotation()
{
UserName = user1,
Contents = "这是注释 1,红色的。",
Rect = new RectangleF(rc.Right, rc.Top, 72 * 2, 72),
Color = Color.Red,
};
page.Annotations.Add(textAnnot);
// 对之前注释的回复:
var textAnnotReply = new TextAnnotation()
{
UserName = user2,
Contents = "这是对第一个注释的回复。",
Rect = new RectangleF(rc.Right, rc.Top, 72 * 2, 72),
ReferenceAnnotation = textAnnot,
ReferenceType = AnnotationReferenceType.Reply,
};
page.Annotations.Add(textAnnotReply);
// 最初打开的文本注释:
ip = new PointF(rc.X, rc.Bottom + gap);
rc = Common.Util.AddNote(
"最初打开的绿色文本注释放置在该注释的右侧。",
page, new RectangleF(ip.X, ip.Y, noteWidth, 100));
var textAnnotOpen = new TextAnnotation()
{
Open = true,
UserName = user1,
Contents = "这是最初打开的注释(绿色)。",
Rect = new RectangleF(rc.Right, rc.Top, 72 * 2, 72),
Color = Color.Green,
};
page.Annotations.Add(textAnnotOpen);
// 自由文本注释(直接显示在页面上):
ip = new PointF(rc.X, rc.Bottom + gap);
rc = Common.Util.AddNote(
"蓝色自由文本注释位于右侧下方,并带有从该注释到此注释的标注。",
page, new RectangleF(ip.X, ip.Y, noteWidth, 100));
var freeAnnot = new FreeTextAnnotation()
{
Rect = new RectangleF(rc.Right + 18, rc.Bottom + 9, 72 * 2, 72),
CalloutLine = new PointF[]
{
new PointF(rc.Left + rc.Width / 2, rc.Bottom),
new PointF(rc.Left + rc.Width / 2, rc.Bottom + 9 + 36),
new PointF(rc.Right + 18, rc.Bottom + 9 + 36),
},
LineWidth = 1,
LineEndStyle = LineEndingStyle.OpenArrow,
LineDashPattern = new float[] { 8, 4 },
Contents = "这是一个自由文本注释,带有指向左侧注释的标注线。",
Color = Color.LightSkyBlue,
};
page.Annotations.Add(freeAnnot);
// 另一个自由文本注释,里面有一些富文本:
ip = new PointF(rc.X, freeAnnot.Rect.Bottom + gap);
var freeRichAnnot = new FreeTextAnnotation()
{
Rect = new RectangleF(ip.X - 144, ip.Y, 72 * 5, 72),
LineWidth = 1,
Color = Color.LightSalmon,
RichText =
"<body><p>这是另一个<i>自由文本注释</i>,包含<b><i>富文本</i></b>内容。</p></body>"
};
page.Annotations.Add(freeRichAnnot);
// 注释周围的方形注释:
ip = new PointF(rc.X, freeRichAnnot.Rect.Bottom + gap * 2);
rc = Common.Util.AddNote(
"在该注释周围用 3 磅宽的橙色线绘制的方形注释具有与其关联的丰富文本。",
page, new RectangleF(ip.X, ip.Y, noteWidth, 100));
rc.Inflate(8, 8);
var squareAnnot = new SquareAnnotation()
{
UserName = user2,
Rect = rc,
LineWidth = 3,
Color = Color.Orange,
RichText =
"<body><p>此<b><i>富文本</i></b>与文本注释周围的方形注释相关联。</p></body>"
};
page.Annotations.Add(squareAnnot);
// 完毕:
doc.Save(stream);
return doc.Pages.Count;
}
}
}