private static async Task <string> RenderPage(Windows.Data.Pdf.PdfPage page, StorageFolder output)
{
var pagePath = string.Format("{0}.png", page.Index);
var pageFile = await output.CreateFileAsync(pagePath, CreationCollisionOption.ReplaceExisting);
using (var imageStream = await pageFile.OpenAsync(FileAccessMode.ReadWrite))
{
PdfPageRenderOptions pdfPageRenderOptions = new PdfPageRenderOptions();
pdfPageRenderOptions.IsIgnoringHighContrast = false;
await page.RenderToStreamAsync(imageStream, pdfPageRenderOptions);
await imageStream.FlushAsync();
}
return(output.Path.ToFolderPath() + pagePath);
}
public async static Task <BitmapImage> BitmapImageFromPdf(Byte[] bytes)
{
Windows.Data.Pdf.PdfDocument pdfDocument;
using (var stream = new MemoryStream(bytes))
{
pdfDocument = await Windows.Data.Pdf.PdfDocument.LoadFromStreamAsync(stream.AsRandomAccessStream());
if (pdfDocument != null)
{
// 1ページ目を読み込む
using (Windows.Data.Pdf.PdfPage page = pdfDocument.GetPage(0))
{
BitmapImage image = new BitmapImage();
using (var IMRAStream = new Windows.Storage.Streams.InMemoryRandomAccessStream())
{
await page.RenderToStreamAsync(IMRAStream);
image.BeginInit();
image.CacheOption = BitmapCacheOption.OnLoad;
image.StreamSource = IMRAStream.AsStream();
image.EndInit();
}
/*
* // save to file.
* JpegBitmapEncoder encoder = new JpegBitmapEncoder();
* encoder.Frames.Add(BitmapFrame.Create(image));
*
* //string filePath = @"C:\Users\hoge\Desktop\test.jpg";
* using (var fileStream = new System.IO.FileStream(filePath, System.IO.FileMode.Create, FileAccess.Write))
* {
* encoder.Save(fileStream);
* }
*/
return(image);
}
}
}
return(null);
}
public PagePdf(pdf.PdfPage Page)
{
_Page = Page ?? throw new ArgumentNullException(nameof(Page));
}
public PagePdf(pdf.PdfPage page)
{
Content = page;
}