/// <summary>
/// 图像缩略切剪
/// </summary>
/// <param name="data">图像文件数据</param>
/// <param name="width">缩略宽度,0表示与高度同比例</param>
/// <param name="height">缩略高度,0表示与宽度同比例</param>
/// <param name="type">目标图像文件格式</param>
/// <param name="seek">输出数据起始位置</param>
/// <returns>图像缩略文件数据</returns>
public static void Cut(ref SubArray <byte> data, int width, int height, ImageFormat type, int seek = 0)
{
if (data.Length != 0 && width > 0 && height > 0 && (width | height) != 0 && seek >= 0)
{
try
{
using (MemoryStream memory = new MemoryStream(data.Array, data.Start, data.Length))
{
ThumbnailBuilder builder = new ThumbnailBuilder();
using (Image image = builder.CreateImage(memory))
{
builder.Cut(ref data, ref width, ref height, type, seek);
return;
}
}
}
catch (Exception error)
{
AutoCSer.Log.Pub.Log.Add(Log.LogType.Error, error);
}
}
data.SetNull();
}
/// <summary>
/// 图像缩略补白
/// </summary>
/// <param name="data">图像文件数据</param>
/// <param name="width">缩略宽度,0表示与高度同比例</param>
/// <param name="height">缩略高度,0表示与宽度同比例</param>
/// <param name="type">目标图像文件格式</param>
/// <param name="backColor">背景色</param>
/// <param name="seek">输出数据起始位置</param>
/// <returns>图像缩略文件数据</returns>
public static void Pad(ref SubArray <byte> data, int width, int height, ImageFormat type, Color backColor, int seek = 0)
{
if (data.Length != 0 && width > 0 && height > 0 && (width | height) != 0 && seek >= 0)
{
try
{
using (MemoryStream memory = new MemoryStream(data.Array, data.Start, data.Length))
{
ThumbnailBuilder builder = new ThumbnailBuilder();
using (Image image = builder.CreateImage(memory))
{
builder.Pad(ref data, ref width, ref height, type, backColor, seek);
return;
}
}
}
catch (Exception error)
{
AutoCSer.LogHelper.Exception(error, null, LogLevel.Exception | LogLevel.AutoCSer);
}
}
data.SetNull();
}