Class RasterCachedImage
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[
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]RasterCachedImage class
Represents a raster image supporting raster graphics operations. This image caches pixel data when required.
public abstract class RasterCachedImage : RasterImage
Properties
Name | Description |
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AutoAdjustPalette { get; set; } | Gets or sets a value indicating whether automatic adjust palette. |
virtual BackgroundColor { get; set; } | Gets or sets a value for the background color. |
abstract BitsPerPixel { get; } | Gets the image bits per pixel count. |
Bounds { get; } | Gets the image bounds. |
BufferSizeHint { get; set; } | Gets or sets the buffer size hint which is defined max allowed size for all internal buffers. |
Container { get; } | Gets the Image container. |
DataStreamContainer { get; } | Gets the object’s data stream. |
Disposed { get; } | Gets a value indicating whether this instance is disposed. |
virtual FileFormat { get; } | Gets a value of file format |
virtual HasAlpha { get; } | Gets a value indicating whether this instance has alpha. |
virtual HasBackgroundColor { get; set; } | Gets or sets a value indicating whether image has background color. |
virtual HasTransparentColor { get; set; } | Gets a value indicating whether image has transparent color. |
abstract Height { get; } | Gets the image height. |
virtual HorizontalResolution { get; set; } | Gets or sets the horizontal resolution, in pixels per inch, of this RasterImage . |
virtual ImageOpacity { get; } | Gets opacity of this image. |
InterruptMonitor { get; set; } | Gets or sets the interrupt monitor. |
override IsCached { get; } | Gets a value indicating whether image data is cached currently. |
IsRawDataAvailable { get; } | Gets a value indicating whether raw data loading is available. |
Palette { get; set; } | Gets or sets the color palette. The color palette is not used when pixels are represented directly. |
virtual PremultiplyComponents { get; set; } | Gets or sets a value indicating whether the image components must be premultiplied. |
RawCustomColorConverter { get; set; } | Gets or sets the custom color converter |
virtual RawDataFormat { get; } | Gets the raw data format. |
RawDataSettings { get; } | Gets the current raw data settings. Note when using these settings the data loads without conversion. |
RawFallbackIndex { get; set; } | Gets or sets the fallback index to use when palette index is out of bounds |
RawIndexedColorConverter { get; set; } | Gets or sets the indexed color converter |
virtual RawLineSize { get; } | Gets the raw line size in bytes. |
Size { get; } | Gets the image size. |
virtual TransparentColor { get; set; } | Gets the image transparent color. |
virtual UpdateXmpData { get; set; } | Gets or sets a value indicating whether to update the XMP metadata. |
override UsePalette { get; } | Gets a value indicating whether the image palette is used. |
virtual UseRawData { get; set; } | Gets or sets a value indicating whether to use raw data loading when the raw data loading is available. |
virtual VerticalResolution { get; set; } | Gets or sets the vertical resolution, in pixels per inch, of this RasterImage . |
abstract Width { get; } | Gets the image width. |
virtual XmpData { get; set; } | Gets or sets the XMP metadata. |
Methods
Name | Description |
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override AdjustBrightness(int) | Adjust of a brightness for image. |
override AdjustContrast(float) | Image contrasting |
override AdjustGamma(float) | Gamma-correction of an image. |
override AdjustGamma(float, float, float) | Gamma-correction of an image. |
override BinarizeBradley(double) | Binarization of an image using Bradley’s adaptive thresholding algorithm using the integral image thresholding |
override BinarizeBradley(double, int) | Binarization of an image using Bradley’s adaptive thresholding algorithm using the integral image thresholding |
override BinarizeFixed(byte) | Binarization of an image with predefined threshold |
override BinarizeOtsu() | Binarization of an image with Otsu thresholding |
Blend(Point, RasterImage, byte) | Blends this image instance with the overlay image. |
override Blend(Point, RasterImage, Rectangle, byte) | Blends this image instance with the overlay image. |
override CacheData() | Caches the data and ensures no additional data loading will be performed from the underlying DataStreamContainer . |
CanSave(ImageOptionsBase) | Determines whether image can be saved to the specified file format represented by the passed save options. |
override Crop(Rectangle) | Cropping the image. |
virtual Crop(int, int, int, int) | Crop image with shifts. |
Dispose() | Disposes the current instance. |
Dither(DitheringMethod, int) | Performs dithering on the current image. |
override Dither(DitheringMethod, int, IColorPalette) | Performs dithering on the current image. |
virtual Filter(Rectangle, FilterOptionsBase) | Filters the specified rectangle. |
GetArgb32Pixel(int, int) | Gets an image 32-bit ARGB pixel. |
GetDefaultArgb32Pixels(Rectangle) | Gets the default 32-bit ARGB pixels array. |
virtual GetDefaultOptions(object[]) | Gets the default options. |
GetDefaultPixels(Rectangle, IPartialArgb32PixelLoader) | Gets the default pixels array using partial pixel loader. |
GetDefaultRawData(Rectangle, RawDataSettings) | Gets the default raw data array. |
GetDefaultRawData(Rectangle, IPartialRawDataLoader, RawDataSettings) | Gets the default raw data array using partial pixel loader. |
virtual GetModifyDate(bool) | Gets the date and time the resource image was last modified. |
virtual GetOriginalOptions() | Gets the options based on the original file settings. This can be helpful to keep bit-depth and other parameters of the original image unchanged. For example, if we load a black-white PNG image with 1 bit per pixel and then save it using the Save method, the output PNG image with 8-bit per pixel will be produced. To avoid it and save PNG image with 1-bit per pixel, use this method to get corresponding saving options and pass them to the Save method as the second parameter. |
GetPixel(int, int) | Gets an image pixel. |
virtual GetSerializedStream(ImageOptionsBase, Rectangle, out int) | Converts to aps. |
GetSkewAngle() | Gets the skew angle. This method is applicable to scanned text documents, to determine the skew angle when scanning. |
override Grayscale() | Transformation of an image to its grayscale representation |
LoadArgb32Pixels(Rectangle) | Loads 32-bit ARGB pixels. |
LoadArgb64Pixels(Rectangle) | Loads 64-bit ARGB pixels. |
LoadCmyk32Pixels(Rectangle) | Loads pixels in CMYK format. |
LoadPartialArgb32Pixels(Rectangle, IPartialArgb32PixelLoader) | Loads 32-bit ARGB pixels partially by packs. |
LoadPartialArgb64Pixels(Rectangle, IPartialArgb64PixelLoader) | Loads 64-bit ARGB pixels partially by packs. |
LoadPartialPixels(Rectangle, IPartialPixelLoader) | Loads pixels partially by packs. |
LoadPixels(Rectangle) | Loads pixels. |
LoadRawData(Rectangle, RawDataSettings, IPartialRawDataLoader) | Loads raw data. |
LoadRawData(Rectangle, Rectangle, RawDataSettings, IPartialRawDataLoader) | Loads raw data. |
NormalizeAngle() | Normalizes the angle. This method is applicable to scanned text documents to get rid of the skewed scan. This method uses GetSkewAngle and Rotate methods. |
virtual NormalizeAngle(bool, Color) | Normalizes the angle. This method is applicable to scanned text documents to get rid of the skewed scan. This method uses GetSkewAngle and Rotate methods. |
ReadArgb32ScanLine(int) | Reads the whole scan line by the specified scan line index. |
ReadScanLine(int) | Reads the whole scan line by the specified scan line index. |
override RemoveMetadata() | Removes this image instance metadata by setting this XmpData value to null . |
ReplaceColor(Color, byte, Color) | Replaces one color to another with allowed difference and preserves original alpha value to save smooth edges. |
virtual ReplaceColor(int, byte, int) | Replaces one color to another with allowed difference and preserves original alpha value to save smooth edges. |
ReplaceNonTransparentColors(Color) | Replaces all non-transparent colors with new color and preserves original alpha value to save smooth edges. Note: if you use it on images without transparency, all colors will be replaced with a single one. |
virtual ReplaceNonTransparentColors(int) | Replaces all non-transparent colors with new color and preserves original alpha value to save smooth edges. Note: if you use it on images without transparency, all colors will be replaced with a single one. |
Resize(int, int) | Resizes the image. The default NearestNeighbourResample is used. |
override Resize(int, int, ImageResizeSettings) | Resizes the image. |
override Resize(int, int, ResizeType) | Resizes the image. |
ResizeHeightProportionally(int) | Resizes the height proportionally. The default NearestNeighbourResample is used. |
virtual ResizeHeightProportionally(int, ImageResizeSettings) | Resizes the height proportionally. |
virtual ResizeHeightProportionally(int, ResizeType) | Resizes the height proportionally. |
ResizeWidthProportionally(int) | Resizes the width proportionally. The default NearestNeighbourResample is used. |
virtual ResizeWidthProportionally(int, ImageResizeSettings) | Resizes the width proportionally. |
virtual ResizeWidthProportionally(int, ResizeType) | Resizes the width proportionally. |
virtual Rotate(float) | Rotate image around the center. |
override Rotate(float, bool, Color) | Rotate image around the center. |
override RotateFlip(RotateFlipType) | Rotates, flips, or rotates and flips the image. |
Save() | Saves the image data to the underlying stream. |
Save(Stream) | Saves the object’s data to the specified stream. |
override Save(string) | Saves the image to the specified file location. |
Save(Stream, ImageOptionsBase) | Saves the image’s data to the specified stream in the specified file format according to save options. |
virtual Save(string, bool) | Saves the object’s data to the specified file location. |
virtual Save(string, ImageOptionsBase) | Saves the object’s data to the specified file location in the specified file format according to save options. |
override Save(Stream, ImageOptionsBase, Rectangle) | Saves the image’s data to the specified stream in the specified file format according to save options. |
virtual Save(string, ImageOptionsBase, Rectangle) | Saves the object’s data to the specified file location in the specified file format according to save options. |
SaveArgb32Pixels(Rectangle, int[]) | Saves the 32-bit ARGB pixels. |
SaveCmyk32Pixels(Rectangle, int[]) | Saves the pixels. |
SavePixels(Rectangle, Color[]) | Saves the pixels. |
SaveRawData(byte[], int, Rectangle, RawDataSettings) | Saves the raw data. |
SetArgb32Pixel(int, int, int) | Sets an image 32-bit ARGB pixel for the specified position. |
override SetPalette(IColorPalette, bool) | Sets the image palette. |
SetPixel(int, int, Color) | Sets an image pixel for the specified position. |
virtual SetResolution(double, double) | Sets the resolution for this RasterImage . |
virtual ToBitmap() | Converts raster image to the bitmap. This method is not supported in versions from .Net7.0 and higher |
WriteArgb32ScanLine(int, int[]) | Writes the whole scan line to the specified scan line index. |
WriteScanLine(int, Color[]) | Writes the whole scan line to the specified scan line index. |
Examples
The following example transforms a colored raster cached image to its grayscale representation. Grayscale images are composed exclusively of shades of gray and carry only intensity information.
[C#]
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.png"))
{
Aspose.Imaging.RasterCachedImage rasterImage = (Aspose.Imaging.RasterCachedImage)image;
rasterImage.Grayscale();
rasterImage.Save(dir + "sample.Grayscale.png");
}
See Also
- class RasterImage
- namespace Aspose.Imaging
- assembly Aspose.Imaging