public ImagePreset(string name, ScalingBase scaleMethod)
{
Name = name;
ScaleMethod = scaleMethod;
PreventUpscaling = true;
Quality = 90;
Filters = new List <IFilter>();
Version = 1;
}
public ResizeCommand(ScalingType scalingType, int size)
{
_size = size;
switch (scalingType)
{
case ScalingType.CropScaling:
_scaling = new CropScaling(_size, _size);
break;
case ScalingType.FitScaling:
_scaling = new FitScaling(_size, _size);
break;
case ScalingType.PadScaling:
_scaling = new PadScaling(_size, _size);
break;
}
}
/// <summary>
/// 缩略图的截图模式是：当原图宽高比按照缩略图时缩放
/// </summary>
/// <param name="originalImagePath"></param>
/// <param name="thumbnailPath"></param>
/// <param name="extName"></param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="scale">Crop:取中间部分;Fit:按比例缩放，自动调整尺寸;Pad:按比例缩放，保持尺寸，不足部分填白</param>
/// <param name="position">水印位置</param>
/// <param name="waterMarkingPath">水印图片路劲</param>
public void MakeThumbnail(string originalImagePath, string thumbnailPath, string extName, int width, int height, ThumbnailMethod scale = ThumbnailMethod.Fit, WaterMarkingPosition?position = null, string waterMarkingPath = "")
{
if (!File.Exists(originalImagePath))
{
return;
}
var image = new KalikoImage(originalImagePath)
{
BackgroundColor = Color.White
};
var format = GetImageFormat(extName);
ScalingBase scalingBase = null;
switch (scale)
{
case ThumbnailMethod.Crop:
scalingBase = new CropScaling(width, height);
break;
case ThumbnailMethod.Fit:
scalingBase = new FitScaling(width, height);
break;
case ThumbnailMethod.Pad:
scalingBase = new PadScaling(width, height);
break;
default:
scalingBase = new CropScaling(width, height);
break;
}
var imageThumb = image.Scale(scalingBase);
AddWaterMarking(position, waterMarkingPath, imageThumb);
imageThumb.SaveImage(thumbnailPath, format);
image.Dispose();
imageThumb.Dispose();
}
/// <summary>Scale the image using a defined scaling engine which can be <see cref="Scaling.CropScaling">CropScaling Class</see> will crop the image so that the final result always
/// has the given dimension, <see cref="Scaling.FitScaling">FitScaling Class</see> will ensure that the complete image is visible inside the given
/// dimension or <see cref="Scaling.PadScaling">PadScaling Class</see> that will pad the image so that it cover the given dimension.</summary>
/// <param name="scaleEngine"></param>
/// <returns></returns>
/// <seealso cref="Scaling.CropScaling"></seealso>
/// <seealso cref="Scaling.FitScaling"></seealso>
/// <seealso cref="Scaling.PadScaling"></seealso>
public KalikoImage Scale(ScalingBase scaleEngine) {
var resizedImage = scaleEngine.Scale(this);
return resizedImage;
}
/// <summary>Scale the image using a defined scaling engine which can be <see cref="Scaling.CropScaling">CropScaling Class</see> will crop the image so that the final result always
/// has the given dimension, <see cref="Scaling.FitScaling">FitScaling Class</see> will ensure that the complete image is visible inside the given
/// dimension or <see cref="Scaling.PadScaling">PadScaling Class</see> that will pad the image so that it cover the given dimension.</summary>
/// <param name="scaleEngine"></param>
/// <returns></returns>
/// <seealso cref="Scaling.CropScaling"></seealso>
/// <seealso cref="Scaling.FitScaling"></seealso>
/// <seealso cref="Scaling.PadScaling"></seealso>
public KalikoImage Scale(ScalingBase scaleEngine)
{
var resizedImage = scaleEngine.Scale(this);
return(resizedImage);
}
/// <summary>Scale the image using a defined scaling engine which can be <see cref="Scaling.CropScaling">CropScaling Class</see> will crop the image so that the final result always
/// has the given dimension, <see cref="Scaling.FitScaling">FitScaling Class</see> will ensure that the complete image is visible inside the given
/// dimension or <see cref="Scaling.PadScaling">PadScaling Class</see> that will pad the image so that it cover the given dimension.</summary>
/// <param name="scaleEngine">Scale engine to use</param>
/// <param name="preventUpscaling">Prevent upscaling</param>
/// <returns></returns>
/// <seealso cref="Scaling.CropScaling"></seealso>
/// <seealso cref="Scaling.FitScaling"></seealso>
/// <seealso cref="Scaling.PadScaling"></seealso>
public KalikoImage Scale(ScalingBase scaleEngine, bool preventUpscaling)
{
var resizedImage = scaleEngine.Scale(this, preventUpscaling);
return(resizedImage);
}
