jellyfin/Emby.Drawing/GDI/DynamicImageHelpers.cs

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4.9 KiB
C#
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using System.Collections.Generic;
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using System.Drawing;
using System.Drawing.Drawing2D;
using System.Drawing.Imaging;
using System.IO;
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using CommonIO;
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namespace Emby.Drawing.GDI
{
public static class DynamicImageHelpers
{
public static void CreateThumbCollage(List<string> files,
IFileSystem fileSystem,
string file,
int width,
int height)
{
const int numStrips = 4;
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files = ImageHelpers.ProjectPaths(files, numStrips);
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const int rows = 1;
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int cols = numStrips;
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int cellWidth = 2 * (width / 3);
int cellHeight = height;
var index = 0;
using (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())
{
fileStream.CopyTo(memoryStream);
memoryStream.Position = 0;
using (var imgtemp = Image.FromStream(memoryStream, true, false))
{
graphics.DrawImage(imgtemp, x, y, cellWidth, cellHeight);
}
}
}
}
index++;
}
}
img.Save(file);
}
}
}
public static void CreateSquareCollage(List<string> files,
IFileSystem fileSystem,
string file,
int width,
int height)
{
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files = ImageHelpers.ProjectPaths(files, 4);
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const int rows = 2;
const int cols = 2;
int singleSize = width / 2;
var index = 0;
using (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 * singleSize;
var y = row * singleSize;
using (var fileStream = fileSystem.GetFileStream(files[index], FileMode.Open, FileAccess.Read, FileShare.Read, true))
{
using (var memoryStream = new MemoryStream())
{
fileStream.CopyTo(memoryStream);
memoryStream.Position = 0;
using (var imgtemp = Image.FromStream(memoryStream, true, false))
{
graphics.DrawImage(imgtemp, x, y, singleSize, singleSize);
}
}
}
index++;
}
}
img.Save(file);
}
}
}
private static Stream GetStream(Image image)
{
var ms = new MemoryStream();
image.Save(ms, ImageFormat.Png);
ms.Position = 0;
return ms;
}
}
}