BitmapImage CreatePage(int p, string t = "Full")
{
int i;
if (t == "Mini")
{
i = 100;
}
else
{
i = Convert.ToInt32(FilePickerT.ActualWidth);
}
using (var memoryStream = new MemoryStream(Pages[p]))
using (WrappingStream wrapper = new WrappingStream(memoryStream))
{
BitmapImage Image = new BitmapImage();
Image.BeginInit();
Image.StreamSource = wrapper;
Image.CacheOption = BitmapCacheOption.OnLoad;
Image.DecodePixelWidth = i;
Image.EndInit();
Image.Freeze();
return(Image);
}
}
public void CreateThumbnail(string FilePath, int p = 1)
{
Dictionary <int, byte[]> Cover = new Dictionary <int, byte[]>();
Cover.Clear();
string type = Path.GetExtension(FilePath).ToLower();
// use the apropriate function for compressed or pdf file
if (System.IO.Path.GetExtension(FilePath) == ".pdf")
{
//Call the function to load the pdf (not the pages)
//the function that load the page is called within the reader.cs
//since on a pdf the page is loaded on demand for memory efficiency purpose
// Program.LoadPDF(FilePath);
// currentBook.TotalPages = Program.PDFBook.TotalPage;
return;
}
else
{
ArchiveLoader(FilePath);
}
BitmapImage a = CreateCover(1);
BitmapEncoder encoder = new PngBitmapEncoder();
encoder.Frames.Add(BitmapFrame.Create(a));
string cover = Path.GetDirectoryName(FilePath) + "/.metadata/" + Path.GetFileNameWithoutExtension(FilePath) + ".jpg";
using (var fileStream = new System.IO.FileStream(cover, System.IO.FileMode.Create))
{
encoder.Save(fileStream);
}
GC.Collect();
void ArchiveLoader(string Path)
{
int i = 0;
var archive = ArchiveFactory.Open(Path);
foreach (var entry in archive.Entries)
{
//Check if the entries in the File are : not a directoy AND contain in their name .jpg OR .png
if (!entry.IsDirectory & (entry.Key.ToLower().Contains(".jpg") | entry.Key.ToLower().Contains(".png")))
{
i++;
if (i <= 1)
{
using (MemoryStream MemStream = new MemoryStream())
{
entry.WriteTo(MemStream);
MemStream.Seek(0, SeekOrigin.Begin);
byte[] bytes = MemStream.ToArray();
Cover.Add(i, bytes);
bytes = null;
}
}
else
{
break;
}
}
}
archive = null;
}
BitmapImage CreateCover(int c)
{
using (var memoryStream = new MemoryStream(Cover[c]))
using (WrappingStream wrapper = new WrappingStream(memoryStream))
{
BitmapImage Image = new BitmapImage();
Image.BeginInit();
Image.StreamSource = wrapper;
Image.CacheOption = BitmapCacheOption.OnLoad;
// Image.DecodePixelWidth = Convert.ToInt32(FilePickerT.ActualWidth);
Image.DecodePixelWidth = 200;
Image.EndInit();
Image.Freeze();
return(Image);
}
}
}
