private void CorrectPhotoNumber(int i, PhotoContext context)
{
foreach (var guy in context.People.Where(x => x.Id > i))
{
guy.CommonPhotoNumber -= 1;
}
context.SaveChanges();
}
public override int SaveChanges()
{
var context = new PhotoContext();
var changedEntities = ChangeTracker.Entries();
foreach (var changedEntity in changedEntities)
{
if (!(changedEntity.Entity is Photo))
{
continue;
}
var entity = (Photo)changedEntity.Entity;
if (entity.Id == 1)
{
continue;
}
if (!entity.IsTheBest)
{
continue;
}
switch (changedEntity.State)
{
case EntityState.Added:
{
var p = context.Photos.First(x => x.Id == 1);
PutImage(p.Face.Image, entity.Face.Image, context);
}
break;
case EntityState.Modified:
{
var p = context.Photos.First(x => x.Id == 1);
var photoPosition =
context.People.Where(x => x.Id == entity.OwnerId).Select(x => x.CommonPhotoNumber).First();
ReplaceImage(p.Face.Image, entity.Face.Image, photoPosition, context);
}
break;
case EntityState.Deleted:
{
var p = context.Photos.First(x => x.Id == 1);
var newPhoto = context.Photos.FirstOrDefault(x => (x.OwnerId == entity.OwnerId) && x.Id != entity.Id);
var position = context.People.First(x => x.Id == entity.OwnerId).CommonPhotoNumber;
if (newPhoto == null)
{
DeleteImage(p.Face.Image, entity.OwnerId, context);
}
else
{
ReplaceImage(p.Face.Image, newPhoto.Face.Image, position, context);
}
}
break;
}
//TODO:придумать логику обновления общей фотографии
}
return(base.SaveChanges());
}
private void ReplaceImage(byte[] commonPhoto, byte[] newPhoto, int position, PhotoContext context)
{
MemoryStream stream1 = new MemoryStream(commonPhoto);
Bitmap bmp1 = new Bitmap(stream1);
if (bmp1.Width / 100 <= position)
{
PutImage(commonPhoto, newPhoto, context);
return;
}
MemoryStream stream2 = new MemoryStream(newPhoto);
Bitmap bmp2 = new Bitmap(stream2);
int outputImageWidth = bmp1.Width;
int outputImageHeight = bmp1.Height;
Bitmap outputImage = new Bitmap(outputImageWidth, outputImageHeight,
PixelFormat.Format32bppArgb);
using (Graphics graphics = Graphics.FromImage(outputImage))
{
graphics.DrawImage(bmp1, 0, 0,
new Rectangle(0, 0, 100 * position, 100), GraphicsUnit.Pixel);
outputImage.Save(@"C:\Users\vinnik\Desktop\Новая папка\img.jpg", ImageFormat.Jpeg);
graphics.DrawImage(bmp2, 100 * position, 0,
new Rectangle(0, 0, bmp2.Width, 100), GraphicsUnit.Pixel);
outputImage.Save(@"C:\Users\vinnik\Desktop\Новая папка\img.jpg", ImageFormat.Jpeg);
graphics.DrawImage(bmp1, 100 * (position + 1), 0,
new Rectangle(100 * (position + 1), 0, bmp1.Width - (100 * (position + 1)), 100), GraphicsUnit.Pixel);
outputImage.Save(@"C:\Users\vinnik\Desktop\Новая папка\img.jpg", ImageFormat.Jpeg);
}
MemoryStream m = new MemoryStream();
var p = context.Photos.First(x => x.Id == 1);
outputImage.Save(m, ImageFormat.Jpeg);
p.Face.Image = m.ToArray();
context.SaveChanges();
outputImage.Save(@"C:\Users\vinnik\Desktop\Новая папка\img.jpg", ImageFormat.Jpeg);
}
private void PutImage(byte[] commonPhoto, byte[] newPhoto, PhotoContext context)
{
if (commonPhoto != null)
{
MemoryStream stream1 = new MemoryStream(commonPhoto);
Bitmap bmp1 = new Bitmap(stream1);
MemoryStream stream2 = new MemoryStream(newPhoto);
Bitmap bmp2 = new Bitmap(stream2);
int outputImageWidth = bmp1.Width + bmp2.Width;
int outputImageHeight = bmp1.Height > bmp2.Height ? bmp1.Height : bmp2.Height;
Bitmap outputImage = new Bitmap(outputImageWidth, outputImageHeight,
System.Drawing.Imaging.PixelFormat.Format32bppArgb);
using (Graphics graphics = Graphics.FromImage(outputImage))
{
graphics.DrawImage(bmp1, new Rectangle(new Point(), bmp1.Size),
new Rectangle(new Point(), bmp1.Size), GraphicsUnit.Pixel);
graphics.DrawImage(bmp2, new Rectangle(new Point(bmp1.Width, 0), bmp2.Size),
new Rectangle(new Point(), bmp2.Size), GraphicsUnit.Pixel);
}
MemoryStream m = new MemoryStream();
var p = context.Photos.First(x => x.Id == 1);
outputImage.Save(m, ImageFormat.Jpeg);
p.Face.Image = m.ToArray();
context.SaveChanges();
outputImage.Save(@"C:\Users\vinnik\Desktop\Новая папка\img.jpg", ImageFormat.Jpeg);
}
else
{
MemoryStream stream2 = new MemoryStream(newPhoto);
var p = context.Photos.First(x => x.Id == 1);
p.Face.Image = stream2.ToArray();
context.SaveChanges();
}
}
private void DeleteImage(byte[] commonPhoto, int ownerId, PhotoContext context)
{
MemoryStream stream1 = new MemoryStream(commonPhoto);
Bitmap bmp1 = new Bitmap(stream1);
int outputImageWidth = bmp1.Width - 100;
int outputImageHeight = bmp1.Height;
if (outputImageWidth == 0)
{
var photo = context.Photos.First(x => x.Id == 1);
photo.Face.Image = null;
context.SaveChanges();
return;
}
Bitmap outputImage = new Bitmap(outputImageWidth, outputImageHeight,
PixelFormat.Format32bppArgb);
int position = context.People.First(x => x.Id == ownerId).CommonPhotoNumber;
using (Graphics graphics = Graphics.FromImage(outputImage))
{
graphics.DrawImage(bmp1, new Rectangle(0, 0, 100 * position, outputImageHeight),
new Rectangle(0, 0, 100 * position, outputImageHeight), GraphicsUnit.Pixel);
graphics.DrawImage(bmp1, new Rectangle(100 * position, 0, outputImageWidth - 100 * position, outputImageHeight),
new Rectangle(100 * (position + 1), 0, bmp1.Width - 100 * (position + 1), 100), GraphicsUnit.Pixel);
}
outputImage.Save(@"C:\Users\vinnik\Desktop\Новая папка\img.jpg", ImageFormat.Jpeg);
var p = context.Photos.First(x => x.Id == 1);
MemoryStream m = new MemoryStream();
outputImage.Save(m, ImageFormat.Jpeg);
p.Face.Image = m.ToArray();
context.SaveChanges();
CorrectPhotoNumber(position, context);
}
