public Bitmap CropImage(Image im, CropPixels rect)
{
Bitmap image = new Bitmap((int)rect.W, (int)rect.H);
using (Graphics gr = Graphics.FromImage(image))
{
gr.CompositingQuality = CompositingQuality.HighSpeed;
gr.InterpolationMode = InterpolationMode.HighQualityBicubic;
gr.CompositingMode = CompositingMode.SourceCopy;
float start = rect.X < 0 ? 0 : rect.X;
gr.FillRectangle(Brushes.White, 0, 0, image.Width, image.Height);
gr.DrawImage(im,
new RectangleF(0, 0, image.Width, image.Height),
new RectangleF(start, rect.Y, rect.W - start, rect.H),
GraphicsUnit.Pixel
);
}
return(image);
}
public string StoreThumb(string filePath, CropPixels rect, ThumbSize size, string extension = null)
{
int maxWidth = (int)size;
int maxHeight = (int)size;
FileInfo inf = new FileInfo(filePath);
string fileName = FileUtils.GetThumbPath(filePath, size, extension);
string newPath = Path.Combine(inf.Directory.FullName, fileName);
Utils.CreateFolderForFile(newPath);
Bitmap image = new Bitmap(maxWidth, maxHeight);
Image im = Image.FromFile(filePath);
Bitmap cropped = CropImage(im, rect);
float ratio = image.Width / rect.W;
using (Graphics gr = Graphics.FromImage(image))
{
gr.FillRectangle(Brushes.White, 0, 0, maxWidth, maxHeight);
float start = rect.X < 0 ? (rect.X * -1 * ratio) : 0;
gr.CompositingQuality = CompositingQuality.HighSpeed;
gr.InterpolationMode = InterpolationMode.HighQualityBicubic;
gr.CompositingMode = CompositingMode.SourceCopy;
gr.DrawImage(cropped, start, 0, image.Width, image.Height);
}
if (File.Exists(newPath))
{
File.Delete(newPath);
}
image.Save(newPath, ImageFormat.Png);
string th = FileUtils.GetThumbUrl(filePath, size);
return(th);
}
