图像处理控件Aspose.Imaging v19.7新版功能亮点示例详解 | 附下载

近期发布了Aspose.Imaging for .NET v19.7，支持PartialRotater类中的优化策略，支持OTG（OpenDocument图形模板），下面我们一起来探索新版中的新增功能及其工作原理。>>欢迎下载Aspose.Imaging for .NET v19.7体验

▲IMAGINGNET-2926 – 将PSD保存到PDF中不提供可选择的文本

 //将文本转换为向量对象using (Image image = Image.Load("text.psd")){    image.Save(fileName + "text_vector.pdf", new PdfOptions());}////老式的转换与充分光栅化using (Image image = Image.Load("text.psd", new PsdLoadOptions() { ReadOnlyMode = true })){    image.Save(fileName + "text_vector.pdf", new PdfOptions());}

▲IMAGINGNET-3381 – 在PartialRotater类中支持优化策略

//为目标加载的图像设置50兆字节的内存限制using (var image = Image.Load(imageFilePath, new LoadOptions() { BufferSizeHint = 50 })) { //执行RotateFlip操作 image.RotateFlip(RotateFlipType.Rotate90FlipNone);//执行旋转操作 ((RasterImage)image).Rotate(60); // rotate 60 degrees clockwise}

▲IMAGINGNET-2044 – 支持OTG (OpenDocument图形模板)

string baseFolder = "D:";           string fileName = "VariousObjectsMultiPage.otg";           ImageOptionsBase[] options = { new PngOptions(), new PdfOptions() };           foreach (ImageOptionsBase item in options)            {               string inputFileName = Path.Combine(baseFolder, fileName);               string fileExt = item is PngOptions nbsp;".png" : ".pdf";               string outputFileName = Path.Combine(baseFolder, fileName + fileExt);               using (Image image = Image.Load(inputFileName))               {                   OtgRasterizationOptions otgRasterizationOptions = new OtgRasterizationOptions();                   otgRasterizationOptions.PageSize = image.Size;                   item.VectorRasterizationOptions = otgRasterizationOptions;                   image.Save(outputFileName, item);                }           }

▲IMAGINGNET-3442 – Bpmn.io SVG转换导致陌生的PNG

using（Image image = Image.Load（“input.svg”））{     image.Save（        “output.png”，        new PngOptions（）            {                 VectorRasterizationOptions = new SvgRasterizationOptions                                                  {                                                      PageSize = image.Size，                                                 }             }）; }

▲IMAGINGNET-3430 – 支持PDFOptions中的DPI设置

  string baseFolder =“D：”;             string fileName =“standardSize.tif”;             string inputFileName = Path.Combine（baseFolder，fileName）;             string outFileName = inputFileName +“。pdf”;             using（Image image = Image.Load（inputFileName））            {                 PdfOptions pdfOptions = new PdfOptions {PageSize = new SizeF（612,792 ）};                 image.Save（outFileName，pdfOptions）;             }

▲IMAGINGNET-3286 – 没有从WMF到SVG的真正转换

 string baseFolder = Path.Combine("D:","3286");           string fileName = "image2.wmf";           string inputFileName = Path.Combine(baseFolder, fileName);           using (Image image = Image.Load(inputFileName))            {               string script = ((WmfImage)image).GetPostScript();               string ethlonScript = File.ReadAllText(inputFileName + ".ps");               if (script != ethlonScript)               {                   throw new Exception("script not eqal ethalon script");                }           }Since PostScript  is not supported in Aspose products, further processing is done by **third-party applications**.For example:Use ghostscript (https://ghostscript.com/)           string baseFolder = Path.Combine("D:","3286");           string fileName = "image2.wmf";           string inputFileName = Path.Combine(baseFolder, fileName);           string scriptFileName = inputFileName + ".ps";           string outputPdfFileName = scriptFileName + ".pdf";           string ghostPath = "C:Program Files (x86)gsgs8.61bingswin32c.exe";           string script;           using (Image image = Image.Load(inputFileName))            {               script = ((WmfImage)image).GetPostScript();                                          }           File.WriteAllText(scriptFileName, script);           string cmdArguments = string.Format(" -sDEVICE=pdfwrite -o {0} {1}", outputPdfFileName, scriptFileName);                       Process proc = System.Diagnostics.Process.Start(ghostPath, cmdArguments);           proc.WaitForExit(60000);

▲IMAGINGNET-3230 – 将Jpeg转换为Tiff会导致绿色覆盖不正确

using（Image image = Image.Load（“input.jpg”））{     image.Save（“output.tiff”，new TiffOptions（TiffExpectedFormat.TiffJpegRgb））; }

▲IMAGINGNET-3445 – 来自font文件夹的文件被锁定

 string baseFolder = Path.Combine("D:", "test");           string fontsFolder = Path.Combine(baseFolder, "fonts");          //创建字体文件夹           if (!Directory.Exists(fontsFolder))            {               Directory.CreateDirectory(fontsFolder);            }//          //复制字体到字体文件夹           string fontFile = Path.Combine(fontsFolder, "foo.ttf");           if (!File.Exists(fontFile))            {               File.Copy(Path.Combine(baseFolder, "foo.ttf"), fontFile);            }//                        //设置字体路径           List fonts = new List(FontSettings.GetDefaultFontsFolders());           fonts.Add(fontsFolder);           FontSettings.SetFontsFolders(fonts.ToArray(), true);//          //打开图片           string inputFile = Path.Combine(baseFolder, "grinched-regular-font.psd");           string outputFile = inputFile + ".png";           using (Image image = Image.Load(inputFile))            {               PngOptions saveOptions = new PngOptions();               image.Save(outputFile, saveOptions);            }                       //删除字体文件夹           Directory.Delete(fontsFolder,true);

▲IMAGINGNET-3444 – 用于调整SVG图像大小的Aspose.Imaging问题

  string baseFolder = "D:";            string inputFileName = Path.Combine(baseFolder, "logotype.svg");            float scale = 10f;            using (Image image = Image.Load(inputFileName))            {                image.Save(inputFileName+".png", new PngOptions()                {                    VectorRasterizationOptions = new SvgRasterizationOptions()                        {PageSize = image.Size, ScaleX = scale, ScaleY = scale}                });            }

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