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原创|其它|编辑:郝浩|2012-10-30 13:11:18.000|阅读 3995 次
概述:本文将展示如何使用Aspose.Words将一个图像转换为PDF。同时展示了使用Aspose.Words完成这项任务的简易程度。
# 慧都年终大促·界面/图表报表/文档/IDE等千款热门软控件火热促销中 >>
本文将展示如何使用Aspose.Words将一个图像转换为PDF。虽然图像转换PDF并不是Aspose.Words的主要特点,但是这个例子展示了使用Aspose.Words完成这项任务的简易程度。
下面的代码允许转换单帧图像,比如JPEG、PNG、BMP,EMF或WMF,以及多帧TIF图像和GIF,并将它们转换为PDF。
C#
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"); } /// <summary> /// Converts an image to PDF using Aspose.Words for .NET. /// </summary> /// <param name="inputFileName">File name of input image file.</param> /// <param name="outputFileName">Output PDF file name.</param> 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); } } }
Visual Basic
Imports Microsoft.VisualBasic Imports System Imports System.Drawing Imports System.Drawing.Imaging Imports System.IO Imports System.Reflection Imports Aspose.Words Imports Aspose.Words.Drawing Namespace ImageToPdf Friend Class Program Public Shared Sub Main(ByVal args() As String) ' Sample infrastructure. Dim exeDir As String = Path.GetDirectoryName(System.Reflection.Assembly.GetExecutingAssembly().Location) + Path.DirectorySeparatorChar Dim dataDir As String = 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") End Sub ''' <summary> ''' Converts an image to PDF using Aspose.Words for .NET. ''' </summary> ''' <param name="inputFileName">File name of input image file.</param> ''' <param name="outputFileName">Output PDF file name.</param> Public Shared Sub ConvertImageToPdf(ByVal inputFileName As String, ByVal outputFileName As String) ' Create Aspose.Words.Document and DocumentBuilder. ' The builder makes it simple to add content to the document. Dim doc As New Document() Dim builder As New DocumentBuilder(doc) ' Read the image from file, ensure it is disposed. Using image As 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". Dim dimension As New FrameDimension(image.FrameDimensionsList(0)) ' Get the number of frames in the image. Dim framesCount As Integer = image.GetFrameCount(dimension) ' Loop through all frames. For frameIdx As Integer = 0 To framesCount - 1 ' Insert a section break before each new page, in case of a multi-frame TIFF. If frameIdx <> 0 Then builder.InsertBreak(BreakType.SectionBreakNewPage) End If ' 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. Dim ps As PageSetup = 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) Next frameIdx End Using ' Save the document to PDF. doc.Save(outputFileName) End Sub End Class End Namespace
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