コード例 #1
0
        public static IEnumerable <string> ConvertPDFToImage(PdfReader reader, string diretorioSaida, int quantidadePaginas)
        {
            PdfReaderContentParser parser          = new PdfReaderContentParser(reader);
            ImageRenderListener    listener        = new ImageRenderListener();
            List <string>          listaDeCaminhos = new List <string>();

            try
            {
                for (int i = 1; i <= quantidadePaginas; i++)
                {
                    parser.ProcessContent(i, listener);
                }

                for (int i = 0; i < listener.Images.Count; ++i)
                {
                    listaDeCaminhos.Add(ConvertJpgToPng(i, listener, diretorioSaida));
                }
                return(listaDeCaminhos);
            }
            finally
            {
                GC.SuppressFinalize(listener);
                GC.SuppressFinalize(parser);
                GC.SuppressFinalize(reader);
                GC.SuppressFinalize(listaDeCaminhos);
                reader.Dispose();
            }
        }
コード例 #2
0
        private static string ConvertJpgToPng(int i, ImageRenderListener listener, string diretorio)
        {
            System.Drawing.Imaging.EncoderParameters parms = new System.Drawing.Imaging.EncoderParameters(1);
            parms.Param[0] = new System.Drawing.Imaging.EncoderParameter(System.Drawing.Imaging.Encoder.Compression, 0);

            System.Drawing.Imaging.ImageCodecInfo jpegEncoder = ImageCodecInfo.GetImageEncoders().Single(p => p.CodecName.Contains("PNG"));
            System.Drawing.Image img = System.Drawing.Image.FromStream(new MemoryStream(listener.Images[i]));
            string path = diretorio + "\\" + i + listener.ImageNames[i].ToLower().Replace(".jpg", ".png");

            img.Save(path, jpegEncoder, parms);
            return(path);
        }
コード例 #3
0
        public static string ConvertPDFToImage(PdfReader reader, string diretorioSaida)
        {
            PdfReaderContentParser parser   = new PdfReaderContentParser(reader);
            ImageRenderListener    listener = new ImageRenderListener();

            try
            {
                parser.ProcessContent(1, listener);
                return(ConvertJpgToPng(0, listener, diretorioSaida));
            }
            finally
            {
                GC.SuppressFinalize(listener);
                GC.SuppressFinalize(parser);
                GC.SuppressFinalize(reader);
                reader.Dispose();
            }
        }