126 lines
5.4 KiB
C#
126 lines
5.4 KiB
C#
using System;
|
|
using System.Drawing;
|
|
using System.Drawing.Drawing2D;
|
|
using System.Drawing.Imaging;
|
|
using System.IO;
|
|
|
|
namespace ManagerService.Helpers
|
|
{
|
|
public static class ImageHelper
|
|
{
|
|
|
|
public static Size ResizeKeepAspect(this Size src, int maxWidth, int maxHeight, bool enlarge = false)
|
|
{
|
|
maxWidth = enlarge ? maxWidth : Math.Min(maxWidth, src.Width);
|
|
maxHeight = enlarge ? maxHeight : Math.Min(maxHeight, src.Height);
|
|
|
|
decimal rnd = Math.Min(maxWidth / (decimal)src.Width, maxHeight / (decimal)src.Height);
|
|
return new Size((int)Math.Round(src.Width * rnd), (int)Math.Round(src.Height * rnd));
|
|
}
|
|
|
|
// TO Byte[] or Image type
|
|
public static dynamic ResizeImage(Image image,
|
|
/* note changed names */
|
|
int canvasWidth, int canvasHeight,
|
|
/* new */
|
|
int originalWidth, int originalHeight, bool isImage = false)
|
|
{
|
|
byte[] convertedToBytes;
|
|
|
|
System.Drawing.Image thumbnail =
|
|
new Bitmap(canvasWidth, canvasHeight); // changed parm names
|
|
System.Drawing.Graphics graphic =
|
|
System.Drawing.Graphics.FromImage(thumbnail);
|
|
|
|
graphic.InterpolationMode = InterpolationMode.HighQualityBicubic;
|
|
graphic.SmoothingMode = SmoothingMode.HighQuality;
|
|
graphic.PixelOffsetMode = PixelOffsetMode.HighQuality;
|
|
graphic.CompositingQuality = CompositingQuality.HighQuality;
|
|
|
|
/* ------------------ new code --------------- */
|
|
|
|
// Figure out the ratio
|
|
double ratioX = (double)canvasWidth / (double)originalWidth;
|
|
double ratioY = (double)canvasHeight / (double)originalHeight;
|
|
// use whichever multiplier is smaller
|
|
double ratio = ratioX < ratioY ? ratioX : ratioY;
|
|
|
|
// now we can get the new height and width
|
|
int newHeight = Convert.ToInt32(originalHeight * ratio);
|
|
int newWidth = Convert.ToInt32(originalWidth * ratio);
|
|
|
|
// Now calculate the X,Y position of the upper-left corner
|
|
// (one of these will always be zero)
|
|
int posX = Convert.ToInt32((canvasWidth - (originalWidth * ratio)) / 2);
|
|
int posY = Convert.ToInt32((canvasHeight - (originalHeight * ratio)) / 2);
|
|
|
|
graphic.Clear(Color.White); // white padding
|
|
graphic.DrawImage(image, posX, posY, newWidth, newHeight);
|
|
|
|
/* ------------- end new code ---------------- */
|
|
|
|
System.Drawing.Imaging.ImageCodecInfo[] info =
|
|
ImageCodecInfo.GetImageEncoders();
|
|
EncoderParameters encoderParameters;
|
|
encoderParameters = new EncoderParameters(1);
|
|
encoderParameters.Param[0] = new EncoderParameter(Encoder.Quality,
|
|
100L);
|
|
|
|
if (isImage)
|
|
{
|
|
return thumbnail;
|
|
}
|
|
|
|
using (MemoryStream updatedImageMemorySteam = new MemoryStream())
|
|
{
|
|
thumbnail.Save(updatedImageMemorySteam, System.Drawing.Imaging.ImageFormat.Jpeg);
|
|
convertedToBytes = updatedImageMemorySteam.ToArray();
|
|
}
|
|
return convertedToBytes;
|
|
}
|
|
|
|
public static byte[] ResizeAndAddWatermark(Byte[] bytes, bool watermark, int maxWidth, int maxHeight)
|
|
{
|
|
byte[] convertedToBytes;
|
|
|
|
using (MemoryStream originalImageMemoryStream = new MemoryStream(bytes))
|
|
{
|
|
using (Image image = Image.FromStream(originalImageMemoryStream))
|
|
{
|
|
Image currentImage = image;
|
|
|
|
if (image.Width > maxWidth || image.Height > maxHeight)
|
|
{
|
|
Size newSize = ResizeKeepAspect(image.Size, maxWidth, maxHeight);
|
|
Image resizedImage = ImageHelper.ResizeImage(image, newSize.Width, newSize.Height, image.Width, image.Height, true);
|
|
currentImage = resizedImage;
|
|
}
|
|
|
|
if(watermark)
|
|
{
|
|
Font font = new Font("Arial", 25, FontStyle.Italic, GraphicsUnit.Pixel);
|
|
Color color = Color.DarkBlue;
|
|
Point point = new Point(currentImage.Width /2, (int)Math.Round(currentImage.Height - currentImage.Height * 0.1));
|
|
SolidBrush brush = new SolidBrush(color);
|
|
using (Graphics graphics = Graphics.FromImage(currentImage))
|
|
{
|
|
StringFormat stringFormat = new StringFormat();
|
|
stringFormat.Alignment = StringAlignment.Center;
|
|
stringFormat.LineAlignment = StringAlignment.Center;
|
|
graphics.DrawString("fortsaintheribert.be", font, brush, point, stringFormat);
|
|
}
|
|
}
|
|
|
|
using (MemoryStream updatedImageMemorySteam = new MemoryStream())
|
|
{
|
|
currentImage.Save(updatedImageMemorySteam, System.Drawing.Imaging.ImageFormat.Jpeg);
|
|
convertedToBytes = updatedImageMemorySteam.ToArray();
|
|
}
|
|
}
|
|
}
|
|
|
|
return convertedToBytes;
|
|
}
|
|
}
|
|
}
|