private void ParseImg(HtmlNode htmlNode, ref List <Elements.BaseElement> elements)
{
string path = _ePubViewer.Book.GetFilePath(HttpUtility.UrlDecode(htmlNode.Attributes["src"].Value.Replace("../", "")));
if (path == null) // img src file does not exists (don't render)
{
Debug.WriteLine(String.Format(CultureInfo.InvariantCulture, "Warning: EPubReader.Parseer.ParseImg - Image \"{0}\" does not exists.", HttpUtility.UrlDecode(htmlNode.Attributes["src"].Value.Replace("../", ""))));
return;
}
Stream s = IsolatedStorageHelper.ReadZipStream(path);
string fileName = Guid.NewGuid().ToString();
Size size = Size.Empty;
// detect image type
if (
path.EndsWith(".jpg", StringComparison.OrdinalIgnoreCase)
||
path.EndsWith(".jpeg", StringComparison.OrdinalIgnoreCase)
||
path.EndsWith(".jpe", StringComparison.OrdinalIgnoreCase)
||
path.EndsWith(".jif", StringComparison.OrdinalIgnoreCase)
||
path.EndsWith(".jfif", StringComparison.OrdinalIgnoreCase)
||
path.EndsWith(".jfi", StringComparison.OrdinalIgnoreCase)
)
{
BitmapSource bs = new BitmapImage();
bs.SetSource(s);
size = new Size(bs.PixelWidth, bs.PixelHeight);
// save image
fileName += ".jpg";
string isfPath = Path.Combine(_ePubViewer.Book.GetImagesDirectory(), fileName);
try
{
using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication())
{
if (!isf.DirectoryExists(Path.GetDirectoryName(isfPath)))
{
isf.CreateDirectory(Path.GetDirectoryName(isfPath));
}
using (IsolatedStorageFileStream isfs = isf.CreateFile(isfPath))
{
WriteableBitmap wb = new WriteableBitmap(bs);
wb.SaveJpeg(isfs, bs.PixelWidth, bs.PixelHeight, 0, 100);
isfs.Close();
}
}
}
catch
{
Debug.WriteLine(String.Format(CultureInfo.InvariantCulture, "Warning: EPubReader.Parseer.ParseImg - Error saving image \"{0}\".", isfPath));
return;
}
}
else if (
path.EndsWith(".bmp", StringComparison.OrdinalIgnoreCase)
||
path.EndsWith(".dib", StringComparison.OrdinalIgnoreCase)
||
path.EndsWith(".gif", StringComparison.OrdinalIgnoreCase)
||
path.EndsWith(".png", StringComparison.OrdinalIgnoreCase)
)
{
ImageTools.ExtendedImage extendedImage = new ImageTools.ExtendedImage();
ImageTools.IO.IImageDecoder decoder;
if (
path.EndsWith(".bmp", StringComparison.OrdinalIgnoreCase)
||
path.EndsWith(".dib", StringComparison.OrdinalIgnoreCase)
)
{
decoder = new ImageTools.IO.Bmp.BmpDecoder();
}
else if (path.EndsWith(".gif", StringComparison.OrdinalIgnoreCase))
{
decoder = new ImageTools.IO.Gif.GifDecoder();
}
else // if (path.EndsWith(".png", StringComparison.OrdinalIgnoreCase))
{
decoder = new ImageTools.IO.Png.PngDecoder();
}
decoder.Decode(extendedImage, s);
size = new Size(extendedImage.PixelWidth, extendedImage.PixelHeight);
ImageTools.IO.Png.PngEncoder pngEncoder = new ImageTools.IO.Png.PngEncoder();
// save image
fileName += ".png";
string isfPath = Path.Combine(_ePubViewer.Book.GetImagesDirectory(), fileName);
try
{
using (IsolatedStorageFile isf = IsolatedStorageFile.GetUserStoreForApplication())
{
if (!isf.DirectoryExists(Path.GetDirectoryName(isfPath)))
{
isf.CreateDirectory(Path.GetDirectoryName(isfPath));
}
using (IsolatedStorageFileStream isfs = isf.CreateFile(isfPath))
{
pngEncoder.Encode(extendedImage, isfs);
isfs.Close();
}
}
}
catch
{
Debug.WriteLine(String.Format(CultureInfo.InvariantCulture, "Warning: EPubReader.Parseer.ParseImg - Error saving image \"{0}\".", isfPath));
return;
}
}
else
{
s.Close();
s.Dispose();
Debug.WriteLine(String.Format(CultureInfo.InvariantCulture, "Warning: EPubReader.Parseer.ParseImg - Not recognizable image type \"{0}\".", path));
return;
}
RemoveLastBreak(ref elements);
// add image
Elements.BaseElement element = new Elements.Image()
{
FileName = fileName,
Width = (int)size.Width,
Height = (int)size.Height
};
ExtractId(htmlNode, ref element);
elements.Add(element);
}
private void RenderImage(ItemElementsContainer iec, int currentLocation, ref Page page, ref double top, Elements.BaseElement element)
{
Elements.Image imageElement = (Elements.Image)element;
// create UI element
Image image = new Image();
image.Tag = imageElement;
Binding binding = new Binding("Tag");
binding.RelativeSource = new RelativeSource(RelativeSourceMode.Self);
binding.Converter = new Converters.IsolatedStorageFileToImageSourceConverter();
binding.ConverterParameter = _ePubViewer.Book;
BindingOperations.SetBinding(image, Image.SourceProperty, binding);
// check size of image (it it's larger then entire space)
if (imageElement.Width + image.Margin.Left + image.Margin.Right > page.Content.Width
||
imageElement.Height + image.Margin.Top + image.Margin.Bottom > page.Content.Height)
{
// image bigger then size of control
if (page.Content.Children.Count > 0)
{
PushPage(iec, ref page, currentLocation, ref top);
}
// count new width / height
double widthRatio = (double)imageElement.Width / page.Content.Width;
double heightRatio = (double)imageElement.Height / page.Content.Height;
double ratio = Math.Max(widthRatio, heightRatio);
image.Width = (int)((double)imageElement.Width / ratio);
image.Height = (int)((double)imageElement.Height / ratio);
image.Stretch = Stretch.Uniform;
image.SetValue(Canvas.TopProperty, top);
page.Content.Children.Add(image);
}
else
{
// image smaller then size of control
// try fit current page
if (top + imageElement.Height + image.Margin.Top + image.Margin.Bottom > page.Content.Height)
{
PushPage(iec, ref page, currentLocation, ref top);
}
image.Width = imageElement.Width;
image.Height = imageElement.Height;
image.Stretch = Stretch.None;
image.SetValue(Canvas.TopProperty, top);
page.Content.Children.Add(image);
}
top += image.Height + image.Margin.Top + image.Margin.Bottom;
}
