Class DjvuPage
Namespace: Aspose.Imaging.FileFormats.Djvu
Assembly: Aspose.Imaging.dll (25.2.0)
Djvu page class
[JsonObject(MemberSerialization.OptIn)]
public class DjvuPage : RasterCachedImage, IDisposable, IObjectWithBounds, IRasterImageArgb32PixelLoader, IRasterImageRawDataLoader, IHasXmpData, IHasMetadata, INotifyPropertyChangedInheritance
object ← DisposableObject ← DataStreamSupporter ← Image ← RasterImage ← RasterCachedImage ← DjvuPage
Implements
IDisposable, IObjectWithBounds, IRasterImageArgb32PixelLoader, IRasterImageRawDataLoader, IHasXmpData, IHasMetadata, INotifyPropertyChanged
Inherited Members
RasterCachedImage.CacheData(), RasterCachedImage.Blend(Point, RasterImage, Rectangle, byte), RasterCachedImage.Resize(int, int, ResizeType), RasterCachedImage.Resize(int, int, ImageResizeSettings), RasterCachedImage.RotateFlip(RotateFlipType), RasterCachedImage.Rotate(float, bool, Color), RasterCachedImage.Crop(Rectangle), RasterCachedImage.Dither(DitheringMethod, int, IColorPalette), RasterCachedImage.Grayscale(), RasterCachedImage.BinarizeFixed(byte), RasterCachedImage.BinarizeOtsu(), RasterCachedImage.BinarizeBradley(double, int), RasterCachedImage.BinarizeBradley(double), RasterCachedImage.AdjustBrightness(int), RasterCachedImage.AdjustContrast(float), RasterCachedImage.AdjustGamma(float, float, float), RasterCachedImage.AdjustGamma(float), RasterCachedImage.OnCached(), RasterCachedImage.OnPaletteChanged(IColorPalette, IColorPalette), RasterCachedImage.IsCached, RasterImage.xmpData, RasterImage.RemoveMetadata(), RasterImage.Save(Stream, ImageOptionsBase, Rectangle), RasterImage.GetModifyDate(bool), RasterImage.Dither(DitheringMethod, int), RasterImage.Dither(DitheringMethod, int, IColorPalette), RasterImage.GetDefaultPixels(Rectangle, IPartialArgb32PixelLoader), RasterImage.GetDefaultRawData(Rectangle, IPartialRawDataLoader, RawDataSettings), RasterImage.GetDefaultArgb32Pixels(Rectangle), RasterImage.GetDefaultRawData(Rectangle, RawDataSettings), RasterImage.GetArgb32Pixel(int, int), RasterImage.GetPixel(int, int), RasterImage.SetArgb32Pixel(int, int, int), RasterImage.SetPixel(int, int, Color), RasterImage.ReadScanLine(int), RasterImage.ReadArgb32ScanLine(int), RasterImage.WriteScanLine(int, Color[]), RasterImage.WriteArgb32ScanLine(int, int[]), RasterImage.LoadPartialArgb32Pixels(Rectangle, IPartialArgb32PixelLoader), RasterImage.LoadPartialPixels(Rectangle, IPartialPixelLoader), RasterImage.LoadArgb32Pixels(Rectangle), RasterImage.LoadArgb64Pixels(Rectangle), RasterImage.LoadPartialArgb64Pixels(Rectangle, IPartialArgb64PixelLoader), RasterImage.LoadPixels(Rectangle), RasterImage.LoadCmykPixels(Rectangle), RasterImage.LoadCmyk32Pixels(Rectangle), RasterImage.LoadRawData(Rectangle, RawDataSettings, IPartialRawDataLoader), RasterImage.LoadRawData(Rectangle, Rectangle, RawDataSettings, IPartialRawDataLoader), RasterImage.SaveRawData(byte[], int, Rectangle, RawDataSettings), RasterImage.SaveArgb32Pixels(Rectangle, int[]), RasterImage.SavePixels(Rectangle, Color[]), RasterImage.SaveCmykPixels(Rectangle, CmykColor[]), RasterImage.SaveCmyk32Pixels(Rectangle, int[]), RasterImage.SetResolution(double, double), RasterImage.SetPalette(IColorPalette, bool), RasterImage.Resize(int, int, ImageResizeSettings), RasterImage.Rotate(float, bool, Color), RasterImage.Rotate(float), RasterImage.BinarizeFixed(byte), RasterImage.BinarizeOtsu(), RasterImage.BinarizeBradley(double), RasterImage.BinarizeBradley(double, int), RasterImage.Blend(Point, RasterImage, Rectangle, byte), RasterImage.Blend(Point, RasterImage, byte), RasterImage.Grayscale(), RasterImage.AdjustBrightness(int), RasterImage.AdjustContrast(float), RasterImage.AdjustGamma(float, float, float), RasterImage.AdjustGamma(float), RasterImage.GetSkewAngle(), RasterImage.NormalizeAngle(), RasterImage.NormalizeAngle(bool, Color), RasterImage.Filter(Rectangle, FilterOptionsBase), RasterImage.ReplaceColor(Color, byte, Color), RasterImage.ReplaceColor(int, byte, int), RasterImage.ReplaceNonTransparentColors(Color), RasterImage.ReplaceNonTransparentColors(int), RasterImage.ToBitmap(), RasterImage.ReleaseManagedResources(), RasterImage.UpdateMetadata(), RasterImage.UpdateDimensions(int, int), RasterImage.PremultiplyComponents, RasterImage.UseRawData, RasterImage.UpdateXmpData, RasterImage.XmpData, RasterImage.RawIndexedColorConverter, RasterImage.RawCustomColorConverter, RasterImage.RawFallbackIndex, RasterImage.RawDataSettings, RasterImage.UsePalette, RasterImage.RawDataFormat, RasterImage.RawLineSize, RasterImage.IsRawDataAvailable, RasterImage.HorizontalResolution, RasterImage.VerticalResolution, RasterImage.HasTransparentColor, RasterImage.HasAlpha, RasterImage.TransparentColor, RasterImage.ImageOpacity, RasterImage.DataLoader, Image.CanLoad(string), Image.CanLoad(string, LoadOptions), Image.CanLoad(Stream), Image.CanLoad(Stream, LoadOptions), Image.Create(ImageOptionsBase, int, int), Image.Create(Image[]), Image.Create(MultipageCreateOptions), Image.Create(string[], bool), Image.Create(string[]), Image.Create(Image[], bool), Image.GetFileFormat(string), Image.GetFileFormat(Stream), Image.GetFittingRectangle(Rectangle, int, int), Image.GetFittingRectangle(Rectangle, int[], int, int), Image.Load(string, LoadOptions), Image.Load(string), Image.Load(Stream, LoadOptions), Image.Load(Stream), Image.GetProportionalWidth(int, int, int), Image.GetProportionalHeight(int, int, int), Image.RemoveMetadata(), Image.CanSave(ImageOptionsBase), Image.Resize(int, int), Image.Resize(int, int, ResizeType), Image.Resize(int, int, ImageResizeSettings), Image.GetDefaultOptions(object[]), Image.GetOriginalOptions(), Image.ResizeWidthProportionally(int), Image.ResizeHeightProportionally(int), Image.ResizeWidthProportionally(int, ResizeType), Image.ResizeHeightProportionally(int, ResizeType), Image.ResizeWidthProportionally(int, ImageResizeSettings), Image.ResizeHeightProportionally(int, ImageResizeSettings), Image.RotateFlip(RotateFlipType), Image.Rotate(float), Image.Crop(Rectangle), Image.Crop(int, int, int, int), Image.Save(), Image.Save(string), Image.Save(string, ImageOptionsBase), Image.Save(string, ImageOptionsBase, Rectangle), Image.Save(Stream, ImageOptionsBase), Image.Save(Stream, ImageOptionsBase, Rectangle), Image.GetSerializedStream(ImageOptionsBase, Rectangle, out int), Image.SetPalette(IColorPalette, bool), Image.UpdateContainer(Image), Image.GetCanNotSaveMessage(ImageOptionsBase), Image.GetFitRectangle(Rectangle), Image.GetImage2Export(ImageOptionsBase, Rectangle, IImageExporter), Image.GetFitRectangle(Rectangle, int[]), Image.OnPaletteChanged(IColorPalette, IColorPalette), Image.OnPaletteChanging(IColorPalette, IColorPalette), Image.ReleaseManagedResources(), Image.BitsPerPixel, Image.Bounds, Image.Container, Image.Height, Image.Palette, Image.UsePalette, Image.Size, Image.Width, Image.InterruptMonitor, Image.BufferSizeHint, Image.AutoAdjustPalette, Image.HasBackgroundColor, Image.FileFormat, Image.BackgroundColor, DataStreamSupporter.timeout, DataStreamSupporter.CacheData(), DataStreamSupporter.Save(), DataStreamSupporter.Save(Stream), DataStreamSupporter.Save(string), DataStreamSupporter.Save(string, bool), DataStreamSupporter.SaveData(Stream), DataStreamSupporter.ReleaseManagedResources(), DataStreamSupporter.OnDataStreamContainerChanging(StreamContainer), DataStreamSupporter.DataStreamContainer, DataStreamSupporter.IsCached, DisposableObject.Dispose(), DisposableObject.ReleaseManagedResources(), DisposableObject.ReleaseUnmanagedResources(), DisposableObject.VerifyNotDisposed(), DisposableObject.Disposed, object.GetType(), object.MemberwiseClone(), object.ToString(), object.Equals(object?), object.Equals(object?, object?), object.ReferenceEquals(object?, object?), object.GetHashCode()
Properties
BitsPerPixel
Gets the image bits per pixel count.
public override int BitsPerPixel { get; }Property Value
Height
Gets the height of the page
public override int Height { get; }Property Value
Image
Gets the image.
public DjvuRaster Image { get; }Property Value
IsColor
Gets a value indicating whether this instance is color.
public bool IsColor { get; }Property Value
PageNumber
Gets the page number.
public int PageNumber { get; }Property Value
Examples
This example shows how to load a DJVU image from a file stream and print information about the pages.```csharp [C#]
string dir = "c:\\temp\\";
// Load a DJVU image from a file stream.
using (System.IO.Stream stream = System.IO.File.OpenRead(dir + "sample.djvu"))
{
using (Aspose.Imaging.FileFormats.Djvu.DjvuImage djvuImage = new Aspose.Imaging.FileFormats.Djvu.DjvuImage(stream))
{
System.Console.WriteLine("The total number of pages: {0}", djvuImage.Pages.Length);
System.Console.WriteLine("The active page number: {0}", djvuImage.ActivePage.PageNumber);
System.Console.WriteLine("The first page number: {0}", djvuImage.FirstPage.PageNumber);
System.Console.WriteLine("The last page number: {0}", djvuImage.LastPage.PageNumber);
foreach (Aspose.Imaging.FileFormats.Djvu.DjvuPage djvuPage in djvuImage.Pages)
{
System.Console.WriteLine("--------------------------------------------------");
System.Console.WriteLine("Page number: {0}", djvuPage.PageNumber);
System.Console.WriteLine("Page size: {0}", djvuPage.Size);
System.Console.WriteLine("Page raw format: {0}", djvuPage.RawDataFormat);
}
}
}
//The output may look like this:
//The total number of pages: 2
//The active page number: 1
//The first page number: 1
//The last page number: 2
//--------------------------------------------------
//Page number: 1
//Page size: { Width = 2481, Height = 3508}
//Page raw format: RgbIndexed1Bpp, used channels: 1
//--------------------------------------------------
//Page number: 2
//Page size: { Width = 2481, Height = 3508}
//Page raw format: RgbIndexed1Bpp, used channels: 1
### <a id="Aspose_Imaging_FileFormats_Djvu_DjvuPage_ParentImage"></a> ParentImage
Gets the parent image the page belongs to
```csharp
public DjvuImage ParentImage { get; }Property Value
ThumbnailImage
Gets or sets the thumbnail image for the page
public DjvuRaster ThumbnailImage { get; set; }Property Value
Width
Gets the width of the page
public override int Width { get; }Property Value
Methods
ExtractThumbnailImage()
Extracts the thumbnail image from the Djvu page.
public DjvuRaster ExtractThumbnailImage()Returns
The Djvu raster image.
GetBackgroundImage()
Gets the background image.
public DjvuRaster GetBackgroundImage()Returns
The bitmap
GetForegroundImage(int)
Gets the foreground image for the page
public DjvuRaster GetForegroundImage(int subsample = 1)Parameters
subsample int
The subsample.
Returns
Bitmap image
GetTextForLocation(Rectangle)
Gets the text for the rectangle location
public string GetTextForLocation(Rectangle rect)Parameters
rect Rectangle
The location rect.
Returns
Text found on location
GetTextImage(int)
Gets the text image.
public DjvuRaster GetTextImage(int subsample = 1)Parameters
subsample int
The subsample.
Returns
The bitmap
ReleaseManagedResources()
Releases the managed resources. Make sure no unmanaged resources are released here, since they may have been already released.
protected override void ReleaseManagedResources()SaveData(Stream)
Saves the data.
protected override void SaveData(Stream stream)Parameters
stream Stream
The stream to save data to.
Exceptions
UpdateDimensions(int, int)
Updates the image dimensions.
protected override void UpdateDimensions(int newWidth, int newHeight)Parameters
newWidth int
The new image width.
newHeight int
The new image height.
Exceptions
PageExportedAction
Occurs when [page exported action].
public static event OnPageExportedAction PageExportedActionEvent Type
PropertyChanged
Occurs when a property value changes.
public event PropertyChangedEventHandler PropertyChanged