对于文档处理控件Aspose.words,它的具有代表性的功能是在没有安装Microsoft Word的情况下,也能实现生成、打印、渲染、邮件合并,文档格式转换等功能。今天在使用Aspose.Words过程中,意外的发现这款文档处理软件的另外一个功能,它可以将图像转换为PDF文件,接下来就为大家分享一下实现这一功能的具体代码:
using System;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Reflection;
using Aspose.Words;
using Aspose.Words.Drawing;
namespace ImageToPdf
{
class Program
{
public static void Main(string[] args)
{
// Sample infrastructure.
string exeDir = Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location) + Path.DirectorySeparatorChar;
string dataDir = new Uri(new Uri(exeDir), @"../../Data/").LocalPath;
ConvertImageToPdf(dataDir + "Test.jpg", dataDir + "TestJpg Out.pdf");
ConvertImageToPdf(dataDir + "Test.png", dataDir + "TestPng Out.pdf");
ConvertImageToPdf(dataDir + "Test.wmf", dataDir + "TestWmf Out.pdf");
ConvertImageToPdf(dataDir + "Test.tiff", dataDir + "TestTiff Out.pdf");
ConvertImageToPdf(dataDir + "Test.gif", dataDir + "TestGif Out.pdf");
}
///
/// Converts an image to PDF using Aspose.Words for .NET.
///
/// File name of input image file.
/// Output PDF file name.
public static void ConvertImageToPdf(string inputFileName, string outputFileName)
{
// Create Aspose.Words.Document and DocumentBuilder.
// The builder makes it simple to add content to the document.
Document doc = new Document();
DocumentBuilder builder = new DocumentBuilder(doc);
// Read the image from file, ensure it is disposed.
using (Image image = Image.FromFile(inputFileName))
{
// Find which dimension the frames in this image represent. For example
// the frames of a BMP or TIFF are "page dimension" whereas frames of a GIF image are "time dimension".
FrameDimension dimension = new FrameDimension(image.FrameDimensionsList[0]);
// Get the number of frames in the image.
int framesCount = image.GetFrameCount(dimension);
// Get the number of frames in the image.
int framesCount = image.GetFrameCount(FrameDimension.Page);
// Loop through all frames.
for (int frameIdx = 0; frameIdx < framesCount; frameIdx++)
{
// Insert a section break before each new page, in case of a multi-frame TIFF.
if (frameIdx != 0)
builder.InsertBreak(BreakType.SectionBreakNewPage);
// Select active frame.
image.SelectActiveFrame(dimension, frameIdx);
// We want the size of the page to be the same as the size of the image.
// Convert pixels to points to size the page to the actual image size.
PageSetup ps = builder.PageSetup;
ps.PageWidth = ConvertUtil.PixelToPoint(image.Width, image.HorizontalResolution);
ps.PageHeight = ConvertUtil.PixelToPoint(image.Height, image.VerticalResolution);
// Insert the image into the document and position it at the top left corner of the page.
builder.InsertImage(
image,
RelativeHorizontalPosition.Page,
0,
RelativeVerticalPosition.Page,
0,
ps.PageWidth,
ps.PageHeight,
WrapType.None);
}
}
// Save the document to PDF.
doc.Save(outputFileName);
}
}
}