Class BmpImage
Namn på plats: Aspose.Imaging.FileFormats.Bmp Församling: Aspose.Imaging.dll (25.4.0)
Du kan enkelt hantera Bitmap (BMP) och Device Independent Bitmap(DIB) filer, vilket underlättar effektiv manipulation och bearbetning av rastergenom att utföra olika operationer på bilder, strömmar denna APIarbetsflöde, som erbjuder utvecklare en pålitlig verktygsfält för att arbeta med BMP ochDIB-format i deras programvaruapplikationer.
[JsonObject(MemberSerialization.OptIn)]
public sealed class BmpImage : RasterCachedImage, IDisposable, IObjectWithBounds, IRasterImageArgb32PixelLoader, IRasterImageRawDataLoader, IHasXmpData, IHasMetadataInheritance
object ← DisposableObject ← DataStreamSupporter ← Image ← RasterImage ← RasterCachedImage ← BmpImage
Implements
IDisposable , IObjectWithBounds , IRasterImageArgb32PixelLoader , IRasterImageRawDataLoader , IHasXmpData , IHasMetadata
Arvsmedlemmar
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.NormalizeHistogram() , 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.IsCached , 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.NormalizeHistogram() , 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.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 , 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.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.CacheData() , DataStreamSupporter.Save() , DataStreamSupporter.Save(Stream) , DataStreamSupporter.Save(string) , DataStreamSupporter.Save(string, bool) , DataStreamSupporter.DataStreamContainer , DataStreamSupporter.IsCached , DisposableObject.Dispose() , DisposableObject.Disposed , object.GetType() , object.ToString() , object.Equals(object?) , object.Equals(object?, object?) , object.ReferenceEquals(object?, object?) , object.GetHashCode()
Examples
Decompress BMP bild som tidigare komprimerades med DXT1 komprimering algoritm.
using (var image = Image.Load("CompressedTiger.bmp"))
{
image.Save("DecompressedTiger.bmp", new BmpOptions());
}Komprimera BMP-bilden med DXT1-komprimeringsalgoritmen.
using (var image = Image.Load("Tiger.bmp"))
{
image.Save("CompressedTiger.bmp", new BmpOptions { Compression = BitmapCompression.Dxt1 });
}Exempelet visar hur man tar bort något objekt från bilden med hjälp av Graphics Path med Telea-algoritmen.
var imageFilePath = "ball.png";
using (var image = Image.Load(imageFilePath))
{
var pngImage = (PngImage)image;
var mask = new GraphicsPath();
var firstFigure = new Figure();
firstFigure.AddShape(new EllipseShape(new RectangleF(350, 170, 570 - 350, 400 - 170)));
mask.AddFigure(firstFigure);
var options = new TeleaWatermarkOptions(mask);
var result = WatermarkRemover.PaintOver(pngImage, options);
result.Save(outputPath);
}Exempelet visar hur man exporterar en BmpImage med kompressionstypen Rgb.
string sourcePath = "input.png";
// Load a PNG image from a file.
using (Image pngImage = Image.Load(sourcePath))
{
// BMP image is saved with transparency support by default, that is achieved by using the BitmapCompression.Bitfields compression method.
// To save a BMP image with the Rgb compression method, the BmpOptions with the Compression property set to BitmapCompression.Rgb should be specified.
pngImage.Save(outputPath, new BmpOptions() { Compression = BitmapCompression.Rgb });
}Exempelet visar hur man tar bort något objekt från bilden med hjälp av Graphics Path med Content Aware fyll algoritmen.
var imageFilePath = "ball.png";
using (var image = Image.Load(imageFilePath))
{
var pngImage = (PngImage)image;
var mask = new GraphicsPath();
var firstFigure = new Figure();
firstFigure.AddShape(new EllipseShape(new RectangleF(350, 170, 570 - 350, 400 - 170)));
mask.AddFigure(firstFigure);
var options = new ContentAwareFillWatermarkOptions(mask)
{
MaxPaintingAttempts = 4
};
var result = WatermarkRemover.PaintOver(pngImage, options);
result.Save(outputPath);
}Följande exempel visar hur man skapar en BMP-bild av den angivna storleken.
string dir = "c:\\temp\\";
// Create a BMP image 100 x 100 px.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(100, 100))
{
// Fill the image with a simple linear red-black gradient.
int width = bmpImage.Width;
int height = bmpImage.Height;
for (int y = 0; y < height; y++)
{
for (int x = 0; x < width; x++)
{
int hue = (255 * x) / width;
bmpImage.SetPixel(x, y, Aspose.Imaging.Color.FromArgb(255, hue, 0, 0));
}
}
using (System.IO.FileStream stream = new System.IO.FileStream(dir + "output.bmp", System.IO.FileMode.Create))
{
bmpImage.Save(stream);
}
}Exempelet visar hur man exporterar en BmpImage från en Png-fil medan man håller alfa-kanalen, sparar en Bmp-fil med öppenhet.
string sourcePath = "input.png";
// Load a PNG image from a file.
using (Image pngImage = Image.Load(sourcePath))
{
// BMP image is saved with transparency support by default.
// If you want to explicitly specify such mode, the BmpOptions's Compression property should be set to BitmapCompression.Bitfields.
// The BitmapCompression.Bitfields compression method is the default compression method in the BmpOptions.
// So the same result of exporting a Bmp image with transparency can be achieved by either one of the following ways.
// With an implicit default options:
pngImage.Save(outputPath);
// With an explicit default options:
pngImage.Save(outputPath, new BmpOptions());
// Specifying the BitmapCompression.Bitfields compression method:
pngImage.Save(outputPath, new BmpOptions() { Compression = BitmapCompression.Bitfields });
}Constructors
BmpImage(Sträng)
Börja använda BmpImage-klassen utan ansträngning med denna konstruktör sominitialiserar en ny instans. Perfekt för utvecklare som vill komma upp ochKör med Aspose.Imaging.FileFormats.Bmp.BmpImage objekt snabbt och effektivt.
public BmpImage(string path)Parameters
path string
Vägen att ladda bilden från och initialisera pixel- och palettdata med.
Examples
Exempel visar hur man laddar en BmpImage från en fil.
string dir = "c:\\temp\\";
// Load a BMP image from a file.
// The source pixels will be converted to 32-bpp format if required.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(dir + "sample.bmp"))
{
// Do some image processing.
// Save to another BMP file.
bmpImage.Save(dir + "sample.output.32bpp.bmp");
}Exceptions
Rasterbilden är noll.
Höjden måste vara positiv.
Paletten måste specificeras för bilder med 8 bit per pixel eller mindre.
BmpImage(sträng, ushort, BitmapCompression, dubbel, dubbel)
Snabbt skapa en ny instans av Aspose.Imaging.FileFormats.Bmp.BmpImage klass med denna konstruktör,använda specifika parametrar som väg, bitsPerPixel och kompression. Idealisk för utvecklareförsöker initialisera BmpImage-objekt snabbt och effektivt, med exakt kontrollöver bildens egenskaper.
public BmpImage(string path, ushort bitsPerPixel, BitmapCompression compression, double horizontalResolution, double verticalResolution)Parameters
path string
Vägen att ladda bilden från och initialisera pixel- och palettdata med.
bitsPerPixel ushort
Biter per pixel.
compression BitmapCompression
Komprimering att använda.
horizontalResolution double
Den horisontella upplösningen. notera på grund av runda den resulterande upplösningen kan något skilja sig från den tidigare.
verticalResolution double
Den vertikala upplösningen. notera på grund av runda den resulterande upplösningen kan något skilja sig från den tidigare.
Examples
Exempelet visar hur man laddar en BmpImage från en fil med angiven bitdjup och upplösning.
string dir = "c:\\temp\\";
// Load a BMP image from a file.
// The source pixels will be converted to 24-bpp format if required.
// The resolution will be set to 96 dpi.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage =
new Aspose.Imaging.FileFormats.Bmp.BmpImage(dir + "sample.bmp", 24, Aspose.Imaging.FileFormats.Bmp.BitmapCompression.Rgb, 96.0, 96.0))
{
// Do some image processing.
// Save to another BMP file.
bmpImage.Save(dir + "sample.output.24bpp.96dpi.bmp");
}Exceptions
Rasterbilden är noll.
Höjden måste vara positiv.
Paletten måste specificeras för bilder med 8 bit per pixel eller mindre.
BmpImage(Stream)
Börja använda Aspose.Imaging.FileFormats.Bmp.BmpImage klass utan ansträngning genom att initiera en ny instansmed denna konstruktör, med hjälp av en ström som input. Perfekt för utvecklare som sökerett bekvämt sätt att arbeta med BmpImage-objekt från olika datakällor,Flexibilitet och enkel integration.
public BmpImage(Stream stream)Parameters
stream Stream
Strömmen för att ladda bilden från och initialisera pixel- och palettdata med.
Examples
Exempelet visar hur man laddar en BmpImage från en filström.
string dir = "c:\\temp\\";
// Load a BMP image from a file stream.
// The source pixels will be converted to 32-bpp format if required.
using (System.IO.Stream stream = System.IO.File.OpenRead(dir + "sample.bmp"))
{
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(stream))
{
// Do some image processing.
// Save to another BMP file.
bmpImage.Save(dir + "sample.output.32bpp.bmp");
}
}Exceptions
Rasterbilden är noll.
Höjden måste vara positiv.
Paletten måste specificeras för bilder med 8 bit per pixel eller mindre.
BmpImage(Stream, ushort, BitmapCompression, dubbel, dubbel)
Börja arbeta med Aspose.Imaging.FileFormats.Bmp.BmpImage-klassen smidigt genom att skapaen ny instans med en ström, tillsammans med angivna parametrar som bitsPerPixelPerfekt för utvecklare som letar efter ett enkelt sätt att hanteraBmpImage objekt, vilket säkerställer flexibilitet och effektivitet i sina projekt.
public BmpImage(Stream stream, ushort bitsPerPixel, BitmapCompression compression, double horizontalResolution, double verticalResolution)Parameters
stream Stream
Strömmen för att ladda bilden från och initialisera pixel- och palettdata med.
bitsPerPixel ushort
Biter per pixel.
compression BitmapCompression
Komprimering att använda.
horizontalResolution double
Den horisontella upplösningen. notera på grund av runda den resulterande upplösningen kan något skilja sig från den tidigare.
verticalResolution double
Den vertikala upplösningen. notera på grund av runda den resulterande upplösningen kan något skilja sig från den tidigare.
Examples
Exempelet visar hur man laddar en BmpImage från en filström med angiven bitdjup och upplösning.
string dir = "c:\\temp\\";
// Load a BMP image from a file stream.
// The source pixels will be converted to 24-bpp format if required.
// The resolution will be set to 96 dpi.
using (System.IO.Stream stream = System.IO.File.OpenRead(dir + "sample.bmp"))
{
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage =
new Aspose.Imaging.FileFormats.Bmp.BmpImage(stream, 24, Aspose.Imaging.FileFormats.Bmp.BitmapCompression.Rgb, 96.0, 96.0))
{
// Do some image processing.
// Save to another BMP file.
bmpImage.Save(dir + "sample.output.24bpp.96dpi.bmp");
}
}Exceptions
Rasterbilden är noll.
Höjden måste vara positiv.
Paletten måste specificeras för bilder med 8 bit per pixel eller mindre.
BmpImage(RasterImage)
Snabbt skapa en ny instans av Aspose.Imaging.FileFormats.Bmp.BmpImage klassgenom att initialisera det med ett RasterImage objekt. Perfekt för utvecklare som tittaratt omvandla befintliga rasterbilder till BmpImage-format,Kompatibilitet och lätthet att integrera i sina projekt.
public BmpImage(RasterImage rasterImage)Parameters
rasterImage RasterImage
Bilden för att initialisera pixel och palettdata med.
Examples
Exempelet visar hur man laddar en BmpImage från en annan instans av RasterImage.
string dir = "c:\\temp\\";
// Create a new PNG image.
Aspose.Imaging.ImageOptions.PngOptions createOptions = new Aspose.Imaging.ImageOptions.PngOptions();
createOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream(), true);
using (Aspose.Imaging.RasterImage rasterImage = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Create(createOptions, 100, 100))
{
// Fill the entire PNG image in red.
Aspose.Imaging.Graphics gr = new Aspose.Imaging.Graphics(rasterImage);
Aspose.Imaging.Brushes.SolidBrush brush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Red);
gr.FillRectangle(brush, rasterImage.Bounds);
// Create a BMP image based on the PNG image.
// The source pixels will be converted to 32-bpp format if required.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(rasterImage))
{
// Save to a BMP file
bmpImage.Save(dir + "output.32bpp.bmp");
}
}Exceptions
Rasterbilden är noll.
Höjden måste vara positiv.
Paletten måste specificeras för bilder med 8 bit per pixel eller mindre.
BmpImage(RasterImage, ushort, BitmapCompression, dubbel, dubbel)
Börja arbeta med Aspose.Imaging.FileFormats.Bmp.BmpImage-klassen smidigt genom att skapa en ny instansanvända en rasterImage tillsammans med angivna parametrar som bitsPerPixel och kompression.Perfekt för utvecklare som letar efter ett enkelt sätt att hantera BmpImage objekt,säkerställa flexibilitet och effektivitet i sina projekt.
public BmpImage(RasterImage rasterImage, ushort bitsPerPixel, BitmapCompression compression, double horizontalResolution, double verticalResolution)Parameters
rasterImage RasterImage
Bilden för att initialisera pixel och palettdata med.
bitsPerPixel ushort
Biter per pixel.
compression BitmapCompression
Komprimering att använda.
horizontalResolution double
Den horisontella upplösningen. notera på grund av runda den resulterande upplösningen kan något skilja sig från den tidigare.
verticalResolution double
Den vertikala upplösningen. notera på grund av runda den resulterande upplösningen kan något skilja sig från den tidigare.
Examples
Exempelet visar hur man laddar en BmpImage från en annan instans av RasterImage med angiven bitdjup och kompression.
string dir = "c:\\temp\\";
// Create a new PNG image.
Aspose.Imaging.ImageOptions.PngOptions createOptions = new Aspose.Imaging.ImageOptions.PngOptions();
createOptions.Source = new Aspose.Imaging.Sources.StreamSource(new System.IO.MemoryStream(), true);
using (Aspose.Imaging.RasterImage rasterImage = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Create(createOptions, 100, 100))
{
// Fill the entire PNG image in red.
Aspose.Imaging.Graphics gr = new Aspose.Imaging.Graphics(rasterImage);
Aspose.Imaging.Brushes.SolidBrush brush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Red);
gr.FillRectangle(brush, rasterImage.Bounds);
// Create a BMP image based on the PNG image.
// The source pixels will be converted to 24-bpp format if required.
// The resolution will be set to 96 dpi.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(rasterImage, 24, Aspose.Imaging.FileFormats.Bmp.BitmapCompression.Rgb, 96.0, 96.0))
{
// Save to a BMP file
bmpImage.Save(dir + "output.24bpp.96dpi.bmp");
}
}Exceptions
Rasterbilden är noll.
Höjden måste vara positiv.
Paletten måste specificeras för bilder med 8 bit per pixel eller mindre.
BmpImage(int, int)
Börja använda Aspose.Imaging.FileFormats.Bmp.BmpImage klass utan ansträngning genom att skapa en ny instansmed specifika bredd och höjdparametrar. Idealisk för utvecklare som sökerett bekvämt sätt att generera BmpImage objekt av anpassade dimensioner, vilket säkerställerflexibilitet och lätthet att integrera i sina projekt.
public BmpImage(int width, int height)Parameters
width int
Bilden är bred.
height int
bildens höjd.
Examples
Exempelet visar hur man skapar en BmpImage av den angivna storleken.
string dir = "c:\\temp\\";
// Create a 32-bpp BMP image of 100 x 100 px.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(100, 100))
{
// Fill the entire image in red.
Aspose.Imaging.Graphics gr = new Aspose.Imaging.Graphics(bmpImage);
Aspose.Imaging.Brushes.SolidBrush brush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Red);
gr.FillRectangle(brush, bmpImage.Bounds);
// Save to a BMP file
bmpImage.Save(dir + "output.bmp");
}Följande exempel visar hur man palletiserar en BMP-bild för att minska dess utkomststorlek.
// Create a BMP image 100 x 100 px.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(100, 100))
{
// The linear gradient from the left-top to the right-bottom corner of the image.
Aspose.Imaging.Brushes.LinearGradientBrush brush =
new Aspose.Imaging.Brushes.LinearGradientBrush(
new Aspose.Imaging.Point(0, 0),
new Aspose.Imaging.Point(bmpImage.Width, bmpImage.Height),
Aspose.Imaging.Color.Red,
Aspose.Imaging.Color.Green);
// Fill the entire image with the linear gradient brush.
Aspose.Imaging.Graphics gr = new Aspose.Imaging.Graphics(bmpImage);
gr.FillRectangle(brush, bmpImage.Bounds);
// Get the closest 8-bit color palette which covers as many pixels as possible, so that a palettized image
// is almost visually indistinguishable from a non-palletized one.
Aspose.Imaging.IColorPalette palette = Aspose.Imaging.ColorPaletteHelper.GetCloseImagePalette(bmpImage, 256);
// 8-bit palette contains at most 256 colors.
Aspose.Imaging.ImageOptions.BmpOptions saveOptions = new Aspose.Imaging.ImageOptions.BmpOptions();
saveOptions.Palette = palette;
saveOptions.BitsPerPixel = 8;
using (System.IO.MemoryStream stream = new System.IO.MemoryStream())
{
bmpImage.Save(stream, saveOptions);
System.Console.WriteLine("The palettized image size is {0} bytes.", stream.Length);
}
using (System.IO.MemoryStream stream = new System.IO.MemoryStream())
{
bmpImage.Save(stream);
System.Console.WriteLine("The non-palettized image size is {0} bytes.", stream.Length);
}
}
// The output looks like this:
// The palettized image size is 11078 bytes.
// The non-palettized image size is 40054 bytes.Exceptions
Höjden måste vara positiv.
Paletten måste specificeras för bilder med 8 bit per pixel eller mindre.
BmpImage(int, int, ushort, IColorPalette)
Börja använda Aspose.Imaging.FileFormats.Bmp.BmpImage-klassen utan problem genom att initiera en ny instansmed parametrar som bredd, höjd, bitdjup och palett. Perfekt förutvecklare som letar efter ett enkelt sätt att skapa BmpImage-objekt medanpassade dimensioner och färgkonfigurationer, vilket säkerställer flexibilitet och effektivitet i sina projekt.
public BmpImage(int width, int height, ushort bitsPerPixel, IColorPalette palette)Parameters
width int
Bilden är bred.
height int
bildens höjd.
bitsPerPixel ushort
Biter per pixel.
palette IColorPalette
Färgpaletten är.
Examples
Exempelet visar hur man skapar en BmpImage av den angivna storleken med den angivna paletten.
string dir = "c:\\temp\\";
Aspose.Imaging.Color[] paletterColors = new Aspose.Imaging.Color[]
{
Aspose.Imaging.Color.Red,
Aspose.Imaging.Color.Green,
};
// Create a monochrome palette which contains only red and green colors.
Aspose.Imaging.IColorPalette palette = new Aspose.Imaging.ColorPalette(paletterColors);
// Create a monochrome 1-bpp BMP image of 100 x 100 px.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(100, 100, 1, palette))
{
Aspose.Imaging.Graphics gr = new Aspose.Imaging.Graphics(bmpImage);
// Fill the upper half of the image in red.
Aspose.Imaging.Brushes.SolidBrush redBrush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Red);
gr.FillRectangle(redBrush, new Aspose.Imaging.Rectangle(0, 0, bmpImage.Width, bmpImage.Height / 2));
// Fill the lower half of the image in green.
Aspose.Imaging.Brushes.SolidBrush greenBrush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Green);
gr.FillRectangle(greenBrush, new Aspose.Imaging.Rectangle(0, bmpImage.Height / 2, bmpImage.Width, bmpImage.Height / 2));
// Save to BMP
bmpImage.Save(dir + "output.monochrome.bmp");
}Exceptions
Höjden måste vara positiv.
Paletten måste specificeras för bilder med 8 bit per pixel eller mindre.
BmpImage(int, int, ushort, IColorPalette, BitmapCompression, dubbel, dubbel)
Snabbt skapa en ny instans av Aspose.Imaging.FileFormats.Bmp.BmpImage klass med denna konstruktör,specificera parametrar som bredd, höjd, bitsPerPixel, och palett. Perfekt för utvecklareLetar efter ett bekvämt sätt att generera BmpImage-objekt med anpassade dimensioneroch färgkonfigurationer, vilket säkerställer flexibilitet och enkel integration i sina projekt.
public BmpImage(int width, int height, ushort bitsPerPixel, IColorPalette palette, BitmapCompression compression, double horizontalResolution, double verticalResolution)Parameters
width int
Bilden är bred.
height int
bildens höjd.
bitsPerPixel ushort
Biter per pixel.
palette IColorPalette
Färgpaletten är.
compression BitmapCompression
Komprimering att använda.
horizontalResolution double
Den horisontella upplösningen. notera på grund av runda den resulterande upplösningen kan något skilja sig från den tidigare.
verticalResolution double
Den vertikala upplösningen. notera på grund av runda den resulterande upplösningen kan något skilja sig från den tidigare.
Examples
Exempelet visar hur man skapar en BmpImage med hjälp av olika alternativ.
string dir = "c:\\temp\\";
Aspose.Imaging.Color[] paletterColors = new Aspose.Imaging.Color[]
{
Aspose.Imaging.Color.Red,
Aspose.Imaging.Color.Green,
};
// Create a monochrome palette which contains only red and green colors.
Aspose.Imaging.IColorPalette palette = new Aspose.Imaging.ColorPalette(paletterColors);
// Create a monochrome 1-bpp BMP image of 100 x 100 px.
// The horizontal and vertical resolution will be set to 96 dpi.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(100, 100, 1, palette, Aspose.Imaging.FileFormats.Bmp.BitmapCompression.Rgb, 96.0, 96.0))
{
Aspose.Imaging.Graphics gr = new Aspose.Imaging.Graphics(bmpImage);
// Fill the upper half of the image in red.
Aspose.Imaging.Brushes.SolidBrush redBrush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Red);
gr.FillRectangle(redBrush, new Aspose.Imaging.Rectangle(0, 0, bmpImage.Width, bmpImage.Height / 2));
// Fill the lower half of the image in green.
Aspose.Imaging.Brushes.SolidBrush greenBrush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Green);
gr.FillRectangle(greenBrush, new Aspose.Imaging.Rectangle(0, bmpImage.Height / 2, bmpImage.Width, bmpImage.Height / 2));
// Save to a BMP file
bmpImage.Save(dir + "output.monochrome.96dpi.bmp");
}Exceptions
Höjden måste vara positiv.
Paletten måste specificeras för bilder med 8 bit per pixel eller mindre.
Properties
BitmapInfoHeader
Snabbt få tillgång till viktiga detaljer om din bitmap-bild med denna enkla funktion.Perfekt för utvecklare som behöver hämta headerinformation för sina bilder.
public BitmapInfoHeader BitmapInfoHeader { get; }Fastighetsvärde
Examples
Följande exempel får informationen från BMP-huvudet och trycker den på konsolen.
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(@"c:\temp\sample.bmp"))
{
Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;
Aspose.Imaging.FileFormats.Bmp.BitmapInfoHeader header = bmpImage.BitmapInfoHeader;
System.Console.WriteLine("The number of palette colors that are required for displaying the bitmap: {0}", header.BitmapColorsImportant);
System.Console.WriteLine("The number of palette colors used in the bitmap: {0}", header.BitmapColorsUsed);
System.Console.WriteLine("The bitmap compression: {0}", header.BitmapCompression);
System.Console.WriteLine("The bitmap height: {0}", header.BitmapHeight);
System.Console.WriteLine("The bitmap width: {0}", header.BitmapWidth);
System.Console.WriteLine("The bitmap raw data size in bytes: {0}", header.BitmapImageSize);
System.Console.WriteLine("The number of planes: {0}", header.BitmapPlanes);
System.Console.WriteLine("The horizontal resolution of the bitmap, in pixels-per-meter: {0}", header.BitmapXPelsPerMeter);
System.Console.WriteLine("The vertical resolution of the bitmap, in pixels-per-meter: {0}", header.BitmapYPelsPerMeter);
System.Console.WriteLine("The number of bits per pixel: {0}", header.BitsPerPixel);
System.Console.WriteLine("The extra bits masks: {0}", header.ExtraBitMasks);
System.Console.WriteLine("The header size in bytes: {0}", header.HeaderSize);
}
//The output may look like this:
//The number of palette colors that are required for displaying the bitmap: 0
//The number of palette colors used in the bitmap: 0
//The bitmap compression: 0
//The bitmap height: 375
//The bitmap width: 500
//The bitmap raw data size in bytes: 562500
//The number of planes: 1
//The horizontal resolution of the bitmap, in pixels-per-meter: 0
//The vertical resolution of the bitmap, in pixels-per-meter: 0
//The number of bits per pixel: 24
//The extra bits masks:
//The header size in bytes: 40BitsPerPixel
Få tillgång till antalet bits per pixel för bilden med enkel användning av denna egenskap.Perfekt för utvecklare som letar efter snabb information om bildkvalitet och djup.
public override int BitsPerPixel { get; }Fastighetsvärde
Examples
Följande exempel får den allmänna informationen om bilden inklusive pixelformat, bildstorlek, upplösning, kompression etc.
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(@"c:\temp\sample.bmp"))
{
Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;
System.Console.WriteLine("The pixel format: {0}", bmpImage.RawDataFormat);
System.Console.WriteLine("The raw line size in bytes: {0}", bmpImage.RawLineSize);
System.Console.WriteLine("The bitmap compression: {0}", bmpImage.Compression);
System.Console.WriteLine("The bitmap width: {0}", bmpImage.Width);
System.Console.WriteLine("The bitmap height: {0}", bmpImage.Height);
System.Console.WriteLine("The number of bits per pixel: {0}", bmpImage.BitsPerPixel);
double hres = bmpImage.HorizontalResolution;
double vres = bmpImage.VerticalResolution;
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", hres);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", vres);
if (hres != 96.0 || vres != 96.0)
{
// You may consider using the SetResolution method for updating both resolution values in single call.
System.Console.WriteLine("Set resolution values to 96 dpi");
bmpImage.SetResolution(96.0, 96.0);
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", bmpImage.HorizontalResolution);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", bmpImage.VerticalResolution);
}
//The output may look like this:
//The pixel format: Rgb24Bpp, used channels: 8,8,8
//The raw line size in bytes: 1500
//The bitmap compression: Rgb
//The bitmap width: 500
//The bitmap height: 375
//The number of bits per pixel: 24
//The horizontal resolution, in pixels per inch: 0
//The vertical resolution, in pixels per inch: 0
//Set resolution values to 96 dpi
//The horizontal resolution, in pixels per inch: 96.012
//The vertical resolution, in pixels per inch: 96.012
}Följande exempel visar hur bitmap-kompressionen påverkar utgångsbildstorleken.
Aspose.Imaging.FileFormats.Bmp.BitmapCompression[] compressions = new Aspose.Imaging.FileFormats.Bmp.BitmapCompression[]
{
Aspose.Imaging.FileFormats.Bmp.BitmapCompression.Rgb,
Aspose.Imaging.FileFormats.Bmp.BitmapCompression.Rle8,
};
Aspose.Imaging.Color[] paletterColors = new Aspose.Imaging.Color[]
{
Aspose.Imaging.Color.Red,
Aspose.Imaging.Color.Green,
};
// Create a monochrome palette which contains only red and green colors.
Aspose.Imaging.IColorPalette palette = new Aspose.Imaging.ColorPalette(paletterColors);
foreach (Aspose.Imaging.FileFormats.Bmp.BitmapCompression compression in compressions)
{
// Create a 8-bpp BMP image of 100 x 100 px.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(100, 100, 8, palette, compression, 0.0, 0.0))
{
Aspose.Imaging.Graphics gr = new Aspose.Imaging.Graphics(bmpImage);
// Fill the entire image in red.
Aspose.Imaging.Brushes.SolidBrush redBrush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Red);
gr.FillRectangle(redBrush, bmpImage.Bounds);
// Save the image to a stream to get the output image size.
using (System.IO.MemoryStream stream = new System.IO.MemoryStream())
{
bmpImage.Save(stream);
System.Console.WriteLine("---------------------------------------------");
System.Console.WriteLine("The compression={0}", bmpImage.Compression);
System.Console.WriteLine("The number of bits per pixel={0}", bmpImage.BitsPerPixel);
System.Console.WriteLine("The image dimensions={0} x {1}", bmpImage.Width, bmpImage.Height);
System.Console.WriteLine("The raw line size={0}", bmpImage.RawLineSize);
System.Console.WriteLine("The output size in bytes={0}", stream.Length);
}
}
}
// The output looks like this:
// ---------------------------------------------
// The compression = Rgb
// The number of bits per pixel = 8
// The image dimensions = 100 x 100
// The raw line size = 100
// The output size in bytes = 11078
// ---------------------------------------------
// The compression = Rle8
// The number of bits per pixel = 8
// The image dimensions = 100 x 100
// The raw line size = 100
// The output size in bytes = 856Compression
Återställa kompressionstypen som används för bilden utan ansträngning med denna egenskap.Perfekt för utvecklare som behöver snabb tillgång till information om bildkompression.
public BitmapCompression Compression { get; }Fastighetsvärde
Examples
Följande exempel får den allmänna informationen om bilden inklusive pixelformat, bildstorlek, upplösning, kompression etc.
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(@"c:\temp\sample.bmp"))
{
Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;
System.Console.WriteLine("The pixel format: {0}", bmpImage.RawDataFormat);
System.Console.WriteLine("The raw line size in bytes: {0}", bmpImage.RawLineSize);
System.Console.WriteLine("The bitmap compression: {0}", bmpImage.Compression);
System.Console.WriteLine("The bitmap width: {0}", bmpImage.Width);
System.Console.WriteLine("The bitmap height: {0}", bmpImage.Height);
System.Console.WriteLine("The number of bits per pixel: {0}", bmpImage.BitsPerPixel);
double hres = bmpImage.HorizontalResolution;
double vres = bmpImage.VerticalResolution;
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", hres);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", vres);
if (hres != 96.0 || vres != 96.0)
{
// You may consider using the SetResolution method for updating both resolution values in single call.
System.Console.WriteLine("Set resolution values to 96 dpi");
bmpImage.SetResolution(96.0, 96.0);
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", bmpImage.HorizontalResolution);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", bmpImage.VerticalResolution);
}
//The output may look like this:
//The pixel format: Rgb24Bpp, used channels: 8,8,8
//The raw line size in bytes: 1500
//The bitmap compression: Rgb
//The bitmap width: 500
//The bitmap height: 375
//The number of bits per pixel: 24
//The horizontal resolution, in pixels per inch: 0
//The vertical resolution, in pixels per inch: 0
//Set resolution values to 96 dpi
//The horizontal resolution, in pixels per inch: 96.012
//The vertical resolution, in pixels per inch: 96.012
}Följande exempel visar hur bitmap-kompressionen påverkar utgångsbildstorleken.
Aspose.Imaging.FileFormats.Bmp.BitmapCompression[] compressions = new Aspose.Imaging.FileFormats.Bmp.BitmapCompression[]
{
Aspose.Imaging.FileFormats.Bmp.BitmapCompression.Rgb,
Aspose.Imaging.FileFormats.Bmp.BitmapCompression.Rle8,
};
Aspose.Imaging.Color[] paletterColors = new Aspose.Imaging.Color[]
{
Aspose.Imaging.Color.Red,
Aspose.Imaging.Color.Green,
};
// Create a monochrome palette which contains only red and green colors.
Aspose.Imaging.IColorPalette palette = new Aspose.Imaging.ColorPalette(paletterColors);
foreach (Aspose.Imaging.FileFormats.Bmp.BitmapCompression compression in compressions)
{
// Create a 8-bpp BMP image of 100 x 100 px.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(100, 100, 8, palette, compression, 0.0, 0.0))
{
Aspose.Imaging.Graphics gr = new Aspose.Imaging.Graphics(bmpImage);
// Fill the entire image in red.
Aspose.Imaging.Brushes.SolidBrush redBrush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Red);
gr.FillRectangle(redBrush, bmpImage.Bounds);
// Save the image to a stream to get the output image size.
using (System.IO.MemoryStream stream = new System.IO.MemoryStream())
{
bmpImage.Save(stream);
System.Console.WriteLine("---------------------------------------------");
System.Console.WriteLine("The compression={0}", bmpImage.Compression);
System.Console.WriteLine("The number of bits per pixel={0}", bmpImage.BitsPerPixel);
System.Console.WriteLine("The image dimensions={0} x {1}", bmpImage.Width, bmpImage.Height);
System.Console.WriteLine("The raw line size={0}", bmpImage.RawLineSize);
System.Console.WriteLine("The output size in bytes={0}", stream.Length);
}
}
}
// The output looks like this:
// ---------------------------------------------
// The compression = Rgb
// The number of bits per pixel = 8
// The image dimensions = 100 x 100
// The raw line size = 100
// The output size in bytes = 11078
// ---------------------------------------------
// The compression = Rle8
// The number of bits per pixel = 8
// The image dimensions = 100 x 100
// The raw line size = 100
// The output size in bytes = 856FileFormat
Lätt återhämta värdet av filformat med denna användarvänliga egenskap.Idealisk för utvecklare som söker snabb åtkomst till information om filformat.
public override FileFormat FileFormat { get; }Fastighetsvärde
Examples
Följande exempel visar hur man extraherar information om rådataformat och alfa-kanal från en BMP-bild.
// Create a 32-bpp BMP image of 100 x 100 px.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(100, 100, 32, null))
{
System.Console.WriteLine("FileFormat={0}, RawDataFormat={1}, HasAlpha={2}", bmpImage.FileFormat, bmpImage.RawDataFormat, bmpImage.HasAlpha);
};
// Create a 24-bpp BMP image of 100 x 100 px.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(100, 100, 24, null))
{
System.Console.WriteLine("FileFormat={0}, RawDataFormat={1}, HasAlpha={2}", bmpImage.FileFormat, bmpImage.RawDataFormat, bmpImage.HasAlpha);
};
// Generally, BMP doesn't support alpha channel so the output will look like this:
// FileFormat = Bmp, RawDataFormat = Rgb32Bpp, used channels: 8,8,8,8, HasAlpha = False
// FileFormat = Bmp, RawDataFormat = Rgb24Bpp, used channels: 8,8,8, HasAlpha = FalseHasAlpha
Det får ett värde som indikerar om denna instans har alfa.
public override bool HasAlpha { get; }Fastighetsvärde
Height
Återställa höjden på bilden utan ansträngning med denna egenskap. Idealisk för utvecklareBehöver snabb tillgång till information om bilddimensioner.
public override int Height { get; }Fastighetsvärde
Examples
Följande exempel får den allmänna informationen om bilden inklusive pixelformat, bildstorlek, upplösning, kompression etc.
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(@"c:\temp\sample.bmp"))
{
Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;
System.Console.WriteLine("The pixel format: {0}", bmpImage.RawDataFormat);
System.Console.WriteLine("The raw line size in bytes: {0}", bmpImage.RawLineSize);
System.Console.WriteLine("The bitmap compression: {0}", bmpImage.Compression);
System.Console.WriteLine("The bitmap width: {0}", bmpImage.Width);
System.Console.WriteLine("The bitmap height: {0}", bmpImage.Height);
System.Console.WriteLine("The number of bits per pixel: {0}", bmpImage.BitsPerPixel);
double hres = bmpImage.HorizontalResolution;
double vres = bmpImage.VerticalResolution;
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", hres);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", vres);
if (hres != 96.0 || vres != 96.0)
{
// You may consider using the SetResolution method for updating both resolution values in single call.
System.Console.WriteLine("Set resolution values to 96 dpi");
bmpImage.SetResolution(96.0, 96.0);
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", bmpImage.HorizontalResolution);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", bmpImage.VerticalResolution);
}
//The output may look like this:
//The pixel format: Rgb24Bpp, used channels: 8,8,8
//The raw line size in bytes: 1500
//The bitmap compression: Rgb
//The bitmap width: 500
//The bitmap height: 375
//The number of bits per pixel: 24
//The horizontal resolution, in pixels per inch: 0
//The vertical resolution, in pixels per inch: 0
//Set resolution values to 96 dpi
//The horizontal resolution, in pixels per inch: 96.012
//The vertical resolution, in pixels per inch: 96.012
}Följande exempel visar hur bitmap-kompressionen påverkar utgångsbildstorleken.
Aspose.Imaging.FileFormats.Bmp.BitmapCompression[] compressions = new Aspose.Imaging.FileFormats.Bmp.BitmapCompression[]
{
Aspose.Imaging.FileFormats.Bmp.BitmapCompression.Rgb,
Aspose.Imaging.FileFormats.Bmp.BitmapCompression.Rle8,
};
Aspose.Imaging.Color[] paletterColors = new Aspose.Imaging.Color[]
{
Aspose.Imaging.Color.Red,
Aspose.Imaging.Color.Green,
};
// Create a monochrome palette which contains only red and green colors.
Aspose.Imaging.IColorPalette palette = new Aspose.Imaging.ColorPalette(paletterColors);
foreach (Aspose.Imaging.FileFormats.Bmp.BitmapCompression compression in compressions)
{
// Create a 8-bpp BMP image of 100 x 100 px.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(100, 100, 8, palette, compression, 0.0, 0.0))
{
Aspose.Imaging.Graphics gr = new Aspose.Imaging.Graphics(bmpImage);
// Fill the entire image in red.
Aspose.Imaging.Brushes.SolidBrush redBrush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Red);
gr.FillRectangle(redBrush, bmpImage.Bounds);
// Save the image to a stream to get the output image size.
using (System.IO.MemoryStream stream = new System.IO.MemoryStream())
{
bmpImage.Save(stream);
System.Console.WriteLine("---------------------------------------------");
System.Console.WriteLine("The compression={0}", bmpImage.Compression);
System.Console.WriteLine("The number of bits per pixel={0}", bmpImage.BitsPerPixel);
System.Console.WriteLine("The image dimensions={0} x {1}", bmpImage.Width, bmpImage.Height);
System.Console.WriteLine("The raw line size={0}", bmpImage.RawLineSize);
System.Console.WriteLine("The output size in bytes={0}", stream.Length);
}
}
}
// The output looks like this:
// ---------------------------------------------
// The compression = Rgb
// The number of bits per pixel = 8
// The image dimensions = 100 x 100
// The raw line size = 100
// The output size in bytes = 11078
// ---------------------------------------------
// The compression = Rle8
// The number of bits per pixel = 8
// The image dimensions = 100 x 100
// The raw line size = 100
// The output size in bytes = 856HorizontalResolution
Denna fastighet låter dig enkelt få eller ställa in den horisontella upplösningen,mätt i pixlar per tum, av Aspose.Imaging.RasterImage objekt.Utvecklare behöver exakt kontroll över bildupplösning för sina applikationer.
public override double HorizontalResolution { get; set; }Fastighetsvärde
Examples
Följande exempel visar hur man ställer in en horisontell/vertikal upplösning av en BMP-bild.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.bmp"))
{
Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;
// Get horizontal and vertical resolution of the BmpImage
double horizontalResolution = bmpImage.HorizontalResolution;
double verticalResolution = bmpImage.VerticalResolution;
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", horizontalResolution);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", verticalResolution);
if (horizontalResolution != 96.0 || verticalResolution != 96.0)
{
// Use the SetResolution method for updating both resolution values in a single call.
System.Console.WriteLine("Set resolution values to 96 dpi");
bmpImage.SetResolution(96.0, 96.0);
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", bmpImage.HorizontalResolution);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", bmpImage.VerticalResolution);
}
// The output may look like this:
// The horizontal resolution, in pixels per inch: 0
// The vertical resolution, in pixels per inch: 0
// Set resolution values to 96 dpi
// The horizontal resolution, in pixels per inch: 96.012
// The vertical resolution, in pixels per inch: 96.012
}Följande exempel får den allmänna informationen om bilden inklusive pixelformat, bildstorlek, upplösning, kompression etc.
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(@"c:\temp\sample.bmp"))
{
Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;
System.Console.WriteLine("The pixel format: {0}", bmpImage.RawDataFormat);
System.Console.WriteLine("The raw line size in bytes: {0}", bmpImage.RawLineSize);
System.Console.WriteLine("The bitmap compression: {0}", bmpImage.Compression);
System.Console.WriteLine("The bitmap width: {0}", bmpImage.Width);
System.Console.WriteLine("The bitmap height: {0}", bmpImage.Height);
System.Console.WriteLine("The number of bits per pixel: {0}", bmpImage.BitsPerPixel);
double hres = bmpImage.HorizontalResolution;
double vres = bmpImage.VerticalResolution;
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", hres);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", vres);
if (hres != 96.0 || vres != 96.0)
{
// You may consider using the SetResolution method for updating both resolution values in single call.
System.Console.WriteLine("Set resolution values to 96 dpi");
bmpImage.SetResolution(96.0, 96.0);
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", bmpImage.HorizontalResolution);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", bmpImage.VerticalResolution);
}
//The output may look like this:
//The pixel format: Rgb24Bpp, used channels: 8,8,8
//The raw line size in bytes: 1500
//The bitmap compression: Rgb
//The bitmap width: 500
//The bitmap height: 375
//The number of bits per pixel: 24
//The horizontal resolution, in pixels per inch: 0
//The vertical resolution, in pixels per inch: 0
//Set resolution values to 96 dpi
//The horizontal resolution, in pixels per inch: 96.012
//The vertical resolution, in pixels per inch: 96.012
}Remarks
Detta värde är alltid 96 eftersom olika plattformar inte kan returnera skärmupplösningen. Du kan överväga att använda SetResolution-metoden för att uppdatera båda upplösningsvärdena i ett enda samtal.
RawDataFormat
Lätt få formatet av dina rådata med denna användarvänliga funktion.Perfekt för utvecklare som letar efter snabb åtkomst till viktig information om deras dataformat.
public override PixelDataFormat RawDataFormat { get; }Fastighetsvärde
Examples
Följande exempel visar hur man extraherar information om rådataformat och alfa-kanal från en BMP-bild.
// Create a 32-bpp BMP image of 100 x 100 px.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(100, 100, 32, null))
{
System.Console.WriteLine("FileFormat={0}, RawDataFormat={1}, HasAlpha={2}", bmpImage.FileFormat, bmpImage.RawDataFormat, bmpImage.HasAlpha);
};
// Create a 24-bpp BMP image of 100 x 100 px.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(100, 100, 24, null))
{
System.Console.WriteLine("FileFormat={0}, RawDataFormat={1}, HasAlpha={2}", bmpImage.FileFormat, bmpImage.RawDataFormat, bmpImage.HasAlpha);
};
// Generally, BMP doesn't support alpha channel so the output will look like this:
// FileFormat = Bmp, RawDataFormat = Rgb32Bpp, used channels: 8,8,8,8, HasAlpha = False
// FileFormat = Bmp, RawDataFormat = Rgb24Bpp, used channels: 8,8,8, HasAlpha = FalseFöljande exempel får den allmänna informationen om bilden inklusive pixelformat, bildstorlek, upplösning, kompression etc.
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(@"c:\temp\sample.bmp"))
{
Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;
System.Console.WriteLine("The pixel format: {0}", bmpImage.RawDataFormat);
System.Console.WriteLine("The raw line size in bytes: {0}", bmpImage.RawLineSize);
System.Console.WriteLine("The bitmap compression: {0}", bmpImage.Compression);
System.Console.WriteLine("The bitmap width: {0}", bmpImage.Width);
System.Console.WriteLine("The bitmap height: {0}", bmpImage.Height);
System.Console.WriteLine("The number of bits per pixel: {0}", bmpImage.BitsPerPixel);
double hres = bmpImage.HorizontalResolution;
double vres = bmpImage.VerticalResolution;
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", hres);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", vres);
if (hres != 96.0 || vres != 96.0)
{
// You may consider using the SetResolution method for updating both resolution values in single call.
System.Console.WriteLine("Set resolution values to 96 dpi");
bmpImage.SetResolution(96.0, 96.0);
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", bmpImage.HorizontalResolution);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", bmpImage.VerticalResolution);
}
//The output may look like this:
//The pixel format: Rgb24Bpp, used channels: 8,8,8
//The raw line size in bytes: 1500
//The bitmap compression: Rgb
//The bitmap width: 500
//The bitmap height: 375
//The number of bits per pixel: 24
//The horizontal resolution, in pixels per inch: 0
//The vertical resolution, in pixels per inch: 0
//Set resolution values to 96 dpi
//The horizontal resolution, in pixels per inch: 96.012
//The vertical resolution, in pixels per inch: 96.012
}RawLineSize
Snabbt få tillgång till storleken på varje rå linje i byter med denna enkla egenskap.Idealisk för utvecklare som behöver hantera råbilddata effektivt.
public override int RawLineSize { get; }Fastighetsvärde
Examples
Följande exempel får den allmänna informationen om bilden inklusive pixelformat, bildstorlek, upplösning, kompression etc.
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(@"c:\temp\sample.bmp"))
{
Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;
System.Console.WriteLine("The pixel format: {0}", bmpImage.RawDataFormat);
System.Console.WriteLine("The raw line size in bytes: {0}", bmpImage.RawLineSize);
System.Console.WriteLine("The bitmap compression: {0}", bmpImage.Compression);
System.Console.WriteLine("The bitmap width: {0}", bmpImage.Width);
System.Console.WriteLine("The bitmap height: {0}", bmpImage.Height);
System.Console.WriteLine("The number of bits per pixel: {0}", bmpImage.BitsPerPixel);
double hres = bmpImage.HorizontalResolution;
double vres = bmpImage.VerticalResolution;
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", hres);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", vres);
if (hres != 96.0 || vres != 96.0)
{
// You may consider using the SetResolution method for updating both resolution values in single call.
System.Console.WriteLine("Set resolution values to 96 dpi");
bmpImage.SetResolution(96.0, 96.0);
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", bmpImage.HorizontalResolution);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", bmpImage.VerticalResolution);
}
//The output may look like this:
//The pixel format: Rgb24Bpp, used channels: 8,8,8
//The raw line size in bytes: 1500
//The bitmap compression: Rgb
//The bitmap width: 500
//The bitmap height: 375
//The number of bits per pixel: 24
//The horizontal resolution, in pixels per inch: 0
//The vertical resolution, in pixels per inch: 0
//Set resolution values to 96 dpi
//The horizontal resolution, in pixels per inch: 96.012
//The vertical resolution, in pixels per inch: 96.012
}Följande exempel visar hur bitmap-kompressionen påverkar utgångsbildstorleken.
Aspose.Imaging.FileFormats.Bmp.BitmapCompression[] compressions = new Aspose.Imaging.FileFormats.Bmp.BitmapCompression[]
{
Aspose.Imaging.FileFormats.Bmp.BitmapCompression.Rgb,
Aspose.Imaging.FileFormats.Bmp.BitmapCompression.Rle8,
};
Aspose.Imaging.Color[] paletterColors = new Aspose.Imaging.Color[]
{
Aspose.Imaging.Color.Red,
Aspose.Imaging.Color.Green,
};
// Create a monochrome palette which contains only red and green colors.
Aspose.Imaging.IColorPalette palette = new Aspose.Imaging.ColorPalette(paletterColors);
foreach (Aspose.Imaging.FileFormats.Bmp.BitmapCompression compression in compressions)
{
// Create a 8-bpp BMP image of 100 x 100 px.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(100, 100, 8, palette, compression, 0.0, 0.0))
{
Aspose.Imaging.Graphics gr = new Aspose.Imaging.Graphics(bmpImage);
// Fill the entire image in red.
Aspose.Imaging.Brushes.SolidBrush redBrush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Red);
gr.FillRectangle(redBrush, bmpImage.Bounds);
// Save the image to a stream to get the output image size.
using (System.IO.MemoryStream stream = new System.IO.MemoryStream())
{
bmpImage.Save(stream);
System.Console.WriteLine("---------------------------------------------");
System.Console.WriteLine("The compression={0}", bmpImage.Compression);
System.Console.WriteLine("The number of bits per pixel={0}", bmpImage.BitsPerPixel);
System.Console.WriteLine("The image dimensions={0} x {1}", bmpImage.Width, bmpImage.Height);
System.Console.WriteLine("The raw line size={0}", bmpImage.RawLineSize);
System.Console.WriteLine("The output size in bytes={0}", stream.Length);
}
}
}
// The output looks like this:
// ---------------------------------------------
// The compression = Rgb
// The number of bits per pixel = 8
// The image dimensions = 100 x 100
// The raw line size = 100
// The output size in bytes = 11078
// ---------------------------------------------
// The compression = Rle8
// The number of bits per pixel = 8
// The image dimensions = 100 x 100
// The raw line size = 100
// The output size in bytes = 856VerticalResolution
Lätt att ta tillbaka eller ställa in vertikal upplösning, mätt i pixlar per tum,av detta Aspose.Imaging.RasterImage objekt med denna egenskap. Perfekt för utvecklare som behöverExakt kontroll av bildupplösning i deras applikationer.
public override double VerticalResolution { get; set; }Fastighetsvärde
Examples
Följande exempel visar hur man ställer in en horisontell/vertikal upplösning av en BMP-bild.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.bmp"))
{
Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;
// Get horizontal and vertical resolution of the BmpImage
double horizontalResolution = bmpImage.HorizontalResolution;
double verticalResolution = bmpImage.VerticalResolution;
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", horizontalResolution);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", verticalResolution);
if (horizontalResolution != 96.0 || verticalResolution != 96.0)
{
// Use the SetResolution method for updating both resolution values in a single call.
System.Console.WriteLine("Set resolution values to 96 dpi");
bmpImage.SetResolution(96.0, 96.0);
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", bmpImage.HorizontalResolution);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", bmpImage.VerticalResolution);
}
// The output may look like this:
// The horizontal resolution, in pixels per inch: 0
// The vertical resolution, in pixels per inch: 0
// Set resolution values to 96 dpi
// The horizontal resolution, in pixels per inch: 96.012
// The vertical resolution, in pixels per inch: 96.012
}Följande exempel får den allmänna informationen om bilden inklusive pixelformat, bildstorlek, upplösning, kompression etc.
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(@"c:\temp\sample.bmp"))
{
Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;
System.Console.WriteLine("The pixel format: {0}", bmpImage.RawDataFormat);
System.Console.WriteLine("The raw line size in bytes: {0}", bmpImage.RawLineSize);
System.Console.WriteLine("The bitmap compression: {0}", bmpImage.Compression);
System.Console.WriteLine("The bitmap width: {0}", bmpImage.Width);
System.Console.WriteLine("The bitmap height: {0}", bmpImage.Height);
System.Console.WriteLine("The number of bits per pixel: {0}", bmpImage.BitsPerPixel);
double hres = bmpImage.HorizontalResolution;
double vres = bmpImage.VerticalResolution;
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", hres);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", vres);
if (hres != 96.0 || vres != 96.0)
{
// You may consider using the SetResolution method for updating both resolution values in single call.
System.Console.WriteLine("Set resolution values to 96 dpi");
bmpImage.SetResolution(96.0, 96.0);
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", bmpImage.HorizontalResolution);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", bmpImage.VerticalResolution);
}
//The output may look like this:
//The pixel format: Rgb24Bpp, used channels: 8,8,8
//The raw line size in bytes: 1500
//The bitmap compression: Rgb
//The bitmap width: 500
//The bitmap height: 375
//The number of bits per pixel: 24
//The horizontal resolution, in pixels per inch: 0
//The vertical resolution, in pixels per inch: 0
//Set resolution values to 96 dpi
//The horizontal resolution, in pixels per inch: 96.012
//The vertical resolution, in pixels per inch: 96.012
}Remarks
Detta värde är alltid 96 eftersom olika plattformar inte kan returnera skärmupplösningen. Du kan överväga att använda SetResolution-metoden för att uppdatera båda upplösningsvärdena i ett enda samtal.
Width
Få tillgång till bildens bredd enkelt med denna egenskap. Idealisk för utvecklareSök snabb information om bilddimensioner.
public override int Width { get; }Fastighetsvärde
Examples
Följande exempel får den allmänna informationen om bilden inklusive pixelformat, bildstorlek, upplösning, kompression etc.
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(@"c:\temp\sample.bmp"))
{
Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;
System.Console.WriteLine("The pixel format: {0}", bmpImage.RawDataFormat);
System.Console.WriteLine("The raw line size in bytes: {0}", bmpImage.RawLineSize);
System.Console.WriteLine("The bitmap compression: {0}", bmpImage.Compression);
System.Console.WriteLine("The bitmap width: {0}", bmpImage.Width);
System.Console.WriteLine("The bitmap height: {0}", bmpImage.Height);
System.Console.WriteLine("The number of bits per pixel: {0}", bmpImage.BitsPerPixel);
double hres = bmpImage.HorizontalResolution;
double vres = bmpImage.VerticalResolution;
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", hres);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", vres);
if (hres != 96.0 || vres != 96.0)
{
// You may consider using the SetResolution method for updating both resolution values in single call.
System.Console.WriteLine("Set resolution values to 96 dpi");
bmpImage.SetResolution(96.0, 96.0);
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", bmpImage.HorizontalResolution);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", bmpImage.VerticalResolution);
}
//The output may look like this:
//The pixel format: Rgb24Bpp, used channels: 8,8,8
//The raw line size in bytes: 1500
//The bitmap compression: Rgb
//The bitmap width: 500
//The bitmap height: 375
//The number of bits per pixel: 24
//The horizontal resolution, in pixels per inch: 0
//The vertical resolution, in pixels per inch: 0
//Set resolution values to 96 dpi
//The horizontal resolution, in pixels per inch: 96.012
//The vertical resolution, in pixels per inch: 96.012
}Följande exempel visar hur bitmap-kompressionen påverkar utgångsbildstorleken.
Aspose.Imaging.FileFormats.Bmp.BitmapCompression[] compressions = new Aspose.Imaging.FileFormats.Bmp.BitmapCompression[]
{
Aspose.Imaging.FileFormats.Bmp.BitmapCompression.Rgb,
Aspose.Imaging.FileFormats.Bmp.BitmapCompression.Rle8,
};
Aspose.Imaging.Color[] paletterColors = new Aspose.Imaging.Color[]
{
Aspose.Imaging.Color.Red,
Aspose.Imaging.Color.Green,
};
// Create a monochrome palette which contains only red and green colors.
Aspose.Imaging.IColorPalette palette = new Aspose.Imaging.ColorPalette(paletterColors);
foreach (Aspose.Imaging.FileFormats.Bmp.BitmapCompression compression in compressions)
{
// Create a 8-bpp BMP image of 100 x 100 px.
using (Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(100, 100, 8, palette, compression, 0.0, 0.0))
{
Aspose.Imaging.Graphics gr = new Aspose.Imaging.Graphics(bmpImage);
// Fill the entire image in red.
Aspose.Imaging.Brushes.SolidBrush redBrush = new Aspose.Imaging.Brushes.SolidBrush(Aspose.Imaging.Color.Red);
gr.FillRectangle(redBrush, bmpImage.Bounds);
// Save the image to a stream to get the output image size.
using (System.IO.MemoryStream stream = new System.IO.MemoryStream())
{
bmpImage.Save(stream);
System.Console.WriteLine("---------------------------------------------");
System.Console.WriteLine("The compression={0}", bmpImage.Compression);
System.Console.WriteLine("The number of bits per pixel={0}", bmpImage.BitsPerPixel);
System.Console.WriteLine("The image dimensions={0} x {1}", bmpImage.Width, bmpImage.Height);
System.Console.WriteLine("The raw line size={0}", bmpImage.RawLineSize);
System.Console.WriteLine("The output size in bytes={0}", stream.Length);
}
}
}
// The output looks like this:
// ---------------------------------------------
// The compression = Rgb
// The number of bits per pixel = 8
// The image dimensions = 100 x 100
// The raw line size = 100
// The output size in bytes = 11078
// ---------------------------------------------
// The compression = Rle8
// The number of bits per pixel = 8
// The image dimensions = 100 x 100
// The raw line size = 100
// The output size in bytes = 856Methods
GetDefaultOptions(Objektet[])
Återställa standardalternativ utan ansträngning med denna enkla metod.Idealisk för utvecklare som letar efter snabb åtkomst till standardbildinställningar eller konfigurationer.
public override ImageOptionsBase GetDefaultOptions(object[] args)Parameters
args object
[ ]
och argumenten .
Returns
Standardalternativ
OnCached()
Kallas när data cacheras och alla relaterade resurser kan deallokeras.
protected override void OnCached()OnPaletteChanging(Föregående inläggFöregående IColorPalette)
Det kallas när paletten förändras.
protected override void OnPaletteChanging(IColorPalette oldPalette, IColorPalette newPalette)Parameters
oldPalette IColorPalette
Den gamla paletten.
newPalette IColorPalette
Den nya paletten.
SaveData(Stream)
Spara dina data.
protected override void SaveData(Stream stream)Parameters
stream Stream
Strömmen för att spara data till.
SetResolution(dubbel, dubbel)
Anpassa upplösningen av Aspose.Imaging.RasterImage utan ansträngning med dettaanvändarvänlig metod. Perfekt för utvecklare som söker noggrann kontroll överbildupplösning i deras applikationer.
public override void SetResolution(double dpiX, double dpiY)Parameters
dpiX double
Den horisontella upplösningen, i punkter per tum, av Aspose.Imaging.RasterImage.
dpiY double
Den vertikala upplösningen, i punkter per tum, av Aspose.Imaging.RasterImage.
Examples
Följande exempel visar hur man ställer in en horisontell/vertikal upplösning av en BMP-bild.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.bmp"))
{
Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;
// Get horizontal and vertical resolution of the BmpImage
double horizontalResolution = bmpImage.HorizontalResolution;
double verticalResolution = bmpImage.VerticalResolution;
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", horizontalResolution);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", verticalResolution);
if (horizontalResolution != 96.0 || verticalResolution != 96.0)
{
// Use the SetResolution method for updating both resolution values in a single call.
System.Console.WriteLine("Set resolution values to 96 dpi");
bmpImage.SetResolution(96.0, 96.0);
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", bmpImage.HorizontalResolution);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", bmpImage.VerticalResolution);
}
// The output may look like this:
// The horizontal resolution, in pixels per inch: 0
// The vertical resolution, in pixels per inch: 0
// Set resolution values to 96 dpi
// The horizontal resolution, in pixels per inch: 96.012
// The vertical resolution, in pixels per inch: 96.012
}Följande exempel får den allmänna informationen om bilden inklusive pixelformat, bildstorlek, upplösning, kompression etc.
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(@"c:\temp\sample.bmp"))
{
Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;
System.Console.WriteLine("The pixel format: {0}", bmpImage.RawDataFormat);
System.Console.WriteLine("The raw line size in bytes: {0}", bmpImage.RawLineSize);
System.Console.WriteLine("The bitmap compression: {0}", bmpImage.Compression);
System.Console.WriteLine("The bitmap width: {0}", bmpImage.Width);
System.Console.WriteLine("The bitmap height: {0}", bmpImage.Height);
System.Console.WriteLine("The number of bits per pixel: {0}", bmpImage.BitsPerPixel);
double hres = bmpImage.HorizontalResolution;
double vres = bmpImage.VerticalResolution;
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", hres);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", vres);
if (hres != 96.0 || vres != 96.0)
{
// You may consider using the SetResolution method for updating both resolution values in single call.
System.Console.WriteLine("Set resolution values to 96 dpi");
bmpImage.SetResolution(96.0, 96.0);
System.Console.WriteLine("The horizontal resolution, in pixels per inch: {0}", bmpImage.HorizontalResolution);
System.Console.WriteLine("The vertical resolution, in pixels per inch: {0}", bmpImage.VerticalResolution);
}
//The output may look like this:
//The pixel format: Rgb24Bpp, used channels: 8,8,8
//The raw line size in bytes: 1500
//The bitmap compression: Rgb
//The bitmap width: 500
//The bitmap height: 375
//The number of bits per pixel: 24
//The horizontal resolution, in pixels per inch: 0
//The vertical resolution, in pixels per inch: 0
//Set resolution values to 96 dpi
//The horizontal resolution, in pixels per inch: 96.012
//The vertical resolution, in pixels per inch: 96.012
}ToBitmap()
Lätt konvertera din raster bild till en bitmapp med denna enkla metod.Perfekt för utvecklare som behöver en oavbruten övergång mellan olika bildformat.
public override Bitmap ToBitmap()Returns
Bitmappen
Examples
Följande exempel konverterar en BMP-bild till en GDI-bitmappa.
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(@"c:\temp\sample.bmp"))
{
Aspose.Imaging.FileFormats.Bmp.BmpImage bmpImage = (Aspose.Imaging.FileFormats.Bmp.BmpImage)image;
System.Drawing.Bitmap bitmap = bmpImage.ToBitmap();
// Process the GDI bitmap.
}UpdateDimensions(int, int)
Uppdatera bilddimensionerna.
protected override void UpdateDimensions(int newWidth, int newHeight)Parameters
newWidth int
Den nya bilden bredd.
newHeight int
Den nya bilden höjd.
