private bool ShouldPdfOptimized(Document pdfDocument, string path)
{
var imagesTooBigCount = 0;
foreach (Page pdfPage in pdfDocument.Pages)
{
// Only do the check if there is exactly one image on the page (scans)
if (pdfPage?.Resources.Images.Count == 1)
{
XImage image = pdfPage.Resources.Images[1];
var stream = new MemoryStream();
image.Save(stream);
var bitmap = Image.FromStream(stream);
if (IsImageTooBig(bitmap, stream.Length, path))
{
imagesTooBigCount++;
// Check if we already skipped the threshold
if (imagesTooBigCount * 100.0 / pdfDocument.Pages.Count > settings.AllowTooBigPercentage)
{
return(true);
}
}
}
}
// if we come here, we don't enough images that are too big
return(false);
}
public static void Run()
{
// ExStart:ExtractImages
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_AsposePdf_Images();
// Open document
Document pdfDocument = new Document(dataDir + "ExtractImages.pdf");
// Extract a particular image
XImage xImage = pdfDocument.Pages[1].Resources.Images[1];
FileStream outputImage = new FileStream(dataDir + "output.jpg", FileMode.Create);
// Save output image
xImage.Save(outputImage, ImageFormat.Jpeg);
outputImage.Close();
dataDir = dataDir + "ExtractImages_out.pdf";
// Save updated PDF file
pdfDocument.Save(dataDir);
// ExEnd:ExtractImages
Console.WriteLine("\nImages extracted successfully.\nFile saved at " + dataDir);
}
private byte[] GetImageData(XImage img)
{
byte[] array;
using (MemoryStream memoryStream = new MemoryStream())
{
img.Save(memoryStream, ImageFormat.Jpeg);
memoryStream.Position = 0;
array = memoryStream.ToArray();
}
return(array);
}
void SaveToolStripMenuItem_Click(object sender, EventArgs e)
{
if (filename == "")
{
SaveFileDialog sfd = new SaveFileDialog();
sfd.Filter = "XImage|*.ximg|All Files|*.*";
if (sfd.ShowDialog() == DialogResult.OK)
{
filename = sfd.FileName;
}
}
if (filename != "")
{
Image.Save(filename);
}
}
private static FigureElement ExtractToFigureElement(ITaggedContent taggedContent, Page page, int imageIndex)
{
ImagePlacementAbsorber imagePlacementAbsorber = new ImagePlacementAbsorber();
page.Accept(imagePlacementAbsorber);
XImage xImage = imagePlacementAbsorber.ImagePlacements[imageIndex].Image;
FileStream outputImage = new FileStream("temp-image.png", FileMode.Create);
xImage.Save(outputImage, ImageFormat.Png);
outputImage.Close();
FigureElement figureElement = taggedContent.CreateFigureElement();
figureElement.SetImage("temp-image.png");
figureElement.AlternativeText = "Aspose logo";
return(figureElement);
}
public static void Main(string[] args)
{
// The path to the documents directory.
string dataDir = Path.GetFullPath("../../../Data/");
//open document
Document pdfDocument = new Document(dataDir + "input.pdf");
//extract a particular image
XImage xImage = pdfDocument.Pages[1].Resources.Images[1];
FileStream outputImage = new FileStream(dataDir + "output.jpg", FileMode.Create);
//save output image
xImage.Save(outputImage, ImageFormat.Jpeg);
outputImage.Close();
//save updated PDF file
pdfDocument.Save(dataDir + "output.pdf");
}
public static void Run()
{
// The path to the documents directory.
string dataDir = RunExamples.GetDataDir_AsposePdf_Images();
//open document
Document pdfDocument = new Document(dataDir + "ExtractImages.pdf");
//extract a particular image
XImage xImage = pdfDocument.Pages[1].Resources.Images[1];
FileStream outputImage = new FileStream(dataDir + "output.jpg", FileMode.Create);
//save output image
xImage.Save(outputImage, ImageFormat.Jpeg);
outputImage.Close();
//save updated PDF file
pdfDocument.Save(dataDir + "ExtractImages_out.pdf");
}
