Aspose.Imaging for .NET一種高級(jí)圖像處理控件，允許開發(fā)人員創(chuàng)建，編輯，繪制或轉(zhuǎn)換圖像。圖像導(dǎo)出和轉(zhuǎn)換是API核心功能之一，它允許在不安裝Photoshop應(yīng)用程序或任何其他圖像編輯器的情況下保存為AdobePhotoshop?本機(jī)格式。

近期發(fā)布了Aspose.Imaging for .NET v19.7，支持PartialRotater類中的優(yōu)化策略，支持OTG（OpenDocument圖形模板），下面我們一起來(lái)探索新版中的新增功能及其工作原理。>>歡迎下載Aspose.Imaging for .NET v19.7體驗(yàn)

▲IMAGINGNET-2926 - 將PSD保存到PDF中不提供可選擇的文本

 //將文本轉(zhuǎn)換為向量對(duì)象
using (Image image = Image.Load("text.psd"))
{
    image.Save(fileName + "text_vector.pdf", new PdfOptions());
}//

//老式的轉(zhuǎn)換與充分光柵化
using (Image image = Image.Load("text.psd", new PsdLoadOptions() { ReadOnlyMode = true }))
{
    image.Save(fileName + "text_vector.pdf", new PdfOptions());
}

▲IMAGINGNET-3381 - 在PartialRotater類中支持優(yōu)化策略

//為目標(biāo)加載的圖像設(shè)置50兆字節(jié)的內(nèi)存限制
using (var image = Image.Load(imageFilePath, new LoadOptions() { BufferSizeHint = 50 })) {
 //執(zhí)行RotateFlip操作
 image.RotateFlip(RotateFlipType.Rotate90FlipNone);
//執(zhí)行旋轉(zhuǎn)操作
 ((RasterImage)image).Rotate(60); // rotate 60 degrees clockwise
}

▲IMAGINGNET-2044 - 支持OTG (OpenDocument圖形模板)

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 ? ".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轉(zhuǎn)換導(dǎo)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設(shè)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 - 沒有從WMF到SVG的真正轉(zhuǎn)換

 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 (//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)
gs
gs8.61
bin
gswin32c.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 - 將Jpeg轉(zhuǎn)換為Tiff會(huì)導(dǎo)致綠色覆蓋不正確

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

▲IMAGINGNET-3445 - 來(lái)自font文件夾的文件被鎖定

 string baseFolder = Path.Combine("D:", "test");
           string fontsFolder = Path.Combine(baseFolder, "fonts");

          //創(chuàng)建字體文件夾
           if (!Directory.Exists(fontsFolder))
            {
               Directory.CreateDirectory(fontsFolder);
            }//

          //復(fù)制字體到字體文件夾
           string fontFile = Path.Combine(fontsFolder, "foo.ttf");
           if (!File.Exists(fontFile))
            {
               File.Copy(Path.Combine(baseFolder, "foo.ttf"), fontFile);
            }//
            
            //設(shè)置字體路徑
           List fonts = new List(FontSettings.GetDefaultFontsFolders());
           fonts.Add(fontsFolder);
           FontSettings.SetFontsFolders(fonts.ToArray(), true);//

          //打開圖片
           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);
            }  
          
           //刪除字體文件夾
           Directory.Delete(fontsFolder,true);

▲IMAGINGNET-3444 - 用于調(diào)整SVG圖像大小的Aspose.Imaging問題

  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}

                });
            }

*想要購(gòu)買Aspose.Imaging正版授權(quán)的朋友可咨詢哦~