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using MediaBrowser.Common.IO;
using System.Collections.Generic;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
using System.Threading.Tasks;
namespace MediaBrowser.Server.Implementations.Photos
{
public static class DynamicImageHelpers
{
public static async Task<Image> GetThumbCollage(List<string> files,
IFileSystem fileSystem,
int width,
int height)
{
if (files.Count < 3)
{
return await GetSingleImage(files, fileSystem).ConfigureAwait(false);
}
const int rows = 1;
const int cols = 3;
int cellWidth = 2 * (width / 3);
int cellHeight = height;
var index = 0;
var img = new Bitmap(width, height, PixelFormat.Format32bppPArgb);
using (var graphics = Graphics.FromImage(img))
{
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.CompositingMode = CompositingMode.SourceCopy;
for (var row = 0; row < rows; row++)
{
for (var col = 0; col < cols; col++)
{
var x = col * (cellWidth / 2);
var y = row * cellHeight;
if (files.Count > index)
{
using (var fileStream = fileSystem.GetFileStream(files[index], FileMode.Open, FileAccess.Read, FileShare.Read, true))
{
using (var memoryStream = new MemoryStream())
{
await fileStream.CopyToAsync(memoryStream).ConfigureAwait(false);
memoryStream.Position = 0;
using (var imgtemp = Image.FromStream(memoryStream, true, false))
{
graphics.DrawImage(imgtemp, x, y, cellWidth, cellHeight);
}
}
}
}
index++;
}
}
}
return img;
}
public static async Task<Image> GetSquareCollage(List<string> files,
IFileSystem fileSystem,
int size)
{
if (files.Count < 4)
{
return await GetSingleImage(files, fileSystem).ConfigureAwait(false);
}
const int rows = 2;
const int cols = 2;
int singleSize = size / 2;
var index = 0;
var img = new Bitmap(size, size, PixelFormat.Format32bppPArgb);
using (var graphics = Graphics.FromImage(img))
{
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.SmoothingMode = SmoothingMode.HighQuality;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.CompositingMode = CompositingMode.SourceCopy;
for (var row = 0; row < rows; row++)
{
for (var col = 0; col < cols; col++)
{
var x = col * singleSize;
var y = row * singleSize;
using (var fileStream = fileSystem.GetFileStream(files[index], FileMode.Open, FileAccess.Read, FileShare.Read, true))
{
using (var memoryStream = new MemoryStream())
{
await fileStream.CopyToAsync(memoryStream).ConfigureAwait(false);
memoryStream.Position = 0;
using (var imgtemp = Image.FromStream(memoryStream, true, false))
{
graphics.DrawImage(imgtemp, x, y, singleSize, singleSize);
}
}
}
index++;
}
}
}
return img;
}
private static Task<Image> GetSingleImage(List<string> files, IFileSystem fileSystem)
{
return GetImage(files[0], fileSystem);
}
private static async Task<Image> GetImage(string file, IFileSystem fileSystem)
{
using (var fileStream = fileSystem.GetFileStream(file, FileMode.Open, FileAccess.Read, FileShare.Read, true))
{
var memoryStream = new MemoryStream();
await fileStream.CopyToAsync(memoryStream).ConfigureAwait(false);
memoryStream.Position = 0;
return Image.FromStream(memoryStream, true, false);
}
}
}
}
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