// note that we also have EXIF metadata that can be extracted
// this is problematic since it ties this class to ScaledImage
//
public void AddThumbs(List <Thumbnail> thumbsToGenerate)
{
// read metadata and if the orientation is 90 cw or 90 ccw, perform the rotation
// todo, refactor the tag processing into its own function, as AddThumbs should do just that
Image imgPhotoToRotate = Image.FromFile(Filename);
var exif = new ExifTagCollection(Filename);
// todo, use other fields such as artist and exposure data and to populate related fields?
var PropertyItems = imgPhotoToRotate.PropertyItems;
// to
var orientation = exif.Where(ex => ex.FieldName == "Orientation").FirstOrDefault();
// if no orinentation property exists, then the camera figured out the correct height and width (eg cell phone cam, with accelerometer)
// or if the orientation is reported as "normal" no need to rotate
if (orientation != null &&
orientation.Value != "The 0th row is at the visual top of the image, and the 0th column is the visual left-hand side.")
{
int angle = 0;
if (orientation.Value == "The 0th row is the visual right-hand side of the image, and the 0th column is the visual top.")
{
// rotate 90 degrees, this seems to be most common with camera that sense the orientation but somehow
// keep width to be the larger dimension and height the smaller, as in a point and shoot
angle = 90;
}
else if (orientation.Value == "The 0th row is the visual left-hand side of the image, and the 0th column is the visual bottom.")
{
angle = 270;
}
Image imgPhoto = ImageProcessor.RotateImage(imgPhotoToRotate, angle);
foreach (var pi in imgPhotoToRotate.PropertyItems)
{
// todo, create symbolic constants for Id values
// copy properties, except for orientation, which we set to "normal"
// i.e. "The 0th row is at the visual top of the image, and the 0th column is the visual left-hand side."
if (pi.Id == 0x112)
{
ushort normal = 1;
pi.Value = BitConverter.GetBytes(normal);
}
imgPhoto.SetPropertyItem(pi);
}
imgPhotoToRotate.Dispose();
imgPhoto.Save(Filename, ImageFormat.Jpeg);
}
// here I want to set the orientation to "1" or normal after rotating it
// imgPhotoToRotate.SetPropertyItem(PropertyItems[0]);
//
// get the standard thumbs
foreach (var th in thumbsToGenerate)
{
ScaledImage si = new ScaledImage(th, this);
si.Process();
}
}
public void SetupThumbnails()
{
var db = new GalleryContext();
//db.Thumbnails.Where(t => t.Description == "medium");
var thumbs = from t in db.Thumbnails where t.MaxHeight == 600 select t;
var tu = thumbs.First();
// var tu = db.Thumbnails.();
//Thumbnail tn = new Thumbnail();
//tn.Description = "medium";
//tn.MaxWidth = 600;
//db.Thumbnails.Add(tn);
//db.Thumbnails.SaveChanges();
GalleryImage master = new GalleryImage();
master.Filename = @"C:\Users\Ken\Documents\GitHub\SimplePhotoGallery\SimplePhotoGallery\Images\img_0519.jpg";
db.Images.Add(master);
var mediumThumb = new ScaledImage(tu, master);
// this adds the medium thumb to the ProcessedImages collection
mediumThumb.Process();
// todo: add initialization code to ScaledImage to pass in BaseImage and Thumbnail
//master.CreateThumbnail(tu, "medium");
db.Images.Add(mediumThumb);
db.SaveChanges();
}
// note that we also have EXIF metadata that can be extracted
// this is problematic since it ties this class to ScaledImage
//
public void AddThumbs(List<Thumbnail> thumbsToGenerate)
{
// read metadata and if the orientation is 90 cw or 90 ccw, perform the rotation
// todo, refactor the tag processing into its own function, as AddThumbs should do just that
Image imgPhotoToRotate = Image.FromFile(Filename);
var exif = new ExifTagCollection(Filename);
// todo, use other fields such as artist and exposure data and to populate related fields?
var PropertyItems = imgPhotoToRotate.PropertyItems;
// to
var orientation = exif.Where(ex => ex.FieldName == "Orientation").FirstOrDefault();
// if no orinentation property exists, then the camera figured out the correct height and width (eg cell phone cam, with accelerometer)
// or if the orientation is reported as "normal" no need to rotate
if (orientation != null &&
orientation.Value != "The 0th row is at the visual top of the image, and the 0th column is the visual left-hand side.")
{
int angle = 0;
if (orientation.Value == "The 0th row is the visual right-hand side of the image, and the 0th column is the visual top.")
{
// rotate 90 degrees, this seems to be most common with camera that sense the orientation but somehow
// keep width to be the larger dimension and height the smaller, as in a point and shoot
angle = 90;
}
else if (orientation.Value == "The 0th row is the visual left-hand side of the image, and the 0th column is the visual bottom.")
{
angle = 270;
}
Image imgPhoto = ImageProcessor.RotateImage(imgPhotoToRotate, angle);
foreach(var pi in imgPhotoToRotate.PropertyItems)
{
// todo, create symbolic constants for Id values
// copy properties, except for orientation, which we set to "normal"
// i.e. "The 0th row is at the visual top of the image, and the 0th column is the visual left-hand side."
if (pi.Id == 0x112)
{
ushort normal = 1;
pi.Value = BitConverter.GetBytes(normal);
}
imgPhoto.SetPropertyItem(pi);
}
imgPhotoToRotate.Dispose();
imgPhoto.Save(Filename, ImageFormat.Jpeg);
}
// here I want to set the orientation to "1" or normal after rotating it
// imgPhotoToRotate.SetPropertyItem(PropertyItems[0]);
//
// get the standard thumbs
foreach (var th in thumbsToGenerate)
{
ScaledImage si = new ScaledImage(th, this);
si.Process();
}
}
