internal virtual void Put(FilteredImagesCache.FilteredImageKey imageKey, PdfImageXObject filteredImage)
{
if (imageKey.GetCleanedAreas() == null || imageKey.GetCleanedAreas().IsEmpty())
{
return;
}
IList <FilteredImagesCache.FilteredImageKey> filteredImageKeys = cache.Get(imageKey.GetImageIndRef());
if (filteredImageKeys == null)
{
cache.Put(imageKey.GetImageIndRef(), filteredImageKeys = new List <FilteredImagesCache.FilteredImageKey>());
}
filteredImageKeys.Add(imageKey);
imageKey.SetFilteredImage(filteredImage);
}
/// <summary>Retrieves saved result of image filtering based on given set of cleaning areas.</summary>
/// <remarks>
/// Retrieves saved result of image filtering based on given set of cleaning areas.
/// This won't handle the case when same filtering result is produced by different sets of areas,
/// e.g. if one set is { (0, 0, 50, 100), (50, 0, 50, 100)} and another one is {(0, 0, 100, 100)},
/// even though filtering results are essentially the same, current
/// <see cref="FilteredImagesCache"/>
/// will treat this two cases as different filtering results.
/// </remarks>
/// <param name="imageKey">the defining filtering case</param>
/// <returns>
/// result of image filtering based on given set of cleaning areas if such was already processed and saved,
/// null otherwise.
/// </returns>
internal virtual PdfImageXObject Get(FilteredImagesCache.FilteredImageKey imageKey)
{
IList <FilteredImagesCache.FilteredImageKey> cachedFilteredImageKeys = cache.Get(imageKey.GetImageIndRef());
if (cachedFilteredImageKeys != null)
{
foreach (FilteredImagesCache.FilteredImageKey cacheKey in cachedFilteredImageKeys)
{
if (RectanglesEqualWithEps(cacheKey.GetCleanedAreas(), imageKey.GetCleanedAreas()))
{
return(cacheKey.GetFilteredImage());
}
}
}
return(null);
}
internal virtual PdfCleanUpFilter.FilterResult <ImageData> FilterImage(FilteredImagesCache.FilteredImageKey
imageKey)
{
return(FilterImage(imageKey.GetImageRenderInfo(), imageKey.GetCleanedAreas()));
}