Class GifOptions
nazivni prostor: Aspose.Imaging.ImageOptions Sastav: Aspose.Imaging.dll (25.4.0)
API za Graphical Interchange Format (GIF) raster sliku datoteke stvaranje nudirazvijatelji sveobuhvatne opcije za stvaranje GIF slike s preciznošćus značajkama za postavljanje boje pozadine, palete boja, rezolucije,međusobno povezani tip, transparentna boja, XMP metadata kontejner, i slikaKompresija, ova API osigurava fleksibilnost i učinkovitost u stvaranju optimiziranogi vizualno privlačne GIF-ove prilagođene specifičnim zahtjevima za prijavu.
[JsonObject(MemberSerialization.OptIn)]
public class GifOptions : ImageOptionsBase, IDisposable, IHasXmpData, IHasMetadata, ICloneableInheritance
object ← DisposableObject ← ImageOptionsBase ← GifOptions
Implements
IDisposable , IHasXmpData , IHasMetadata , ICloneable
naslijeđeni članovi
ImageOptionsBase.Clone() , ImageOptionsBase.ReleaseManagedResources() , ImageOptionsBase.KeepMetadata , ImageOptionsBase.XmpData , ImageOptionsBase.Source , ImageOptionsBase.Palette , ImageOptionsBase.ResolutionSettings , ImageOptionsBase.VectorRasterizationOptions , ImageOptionsBase.BufferSizeHint , ImageOptionsBase.MultiPageOptions , ImageOptionsBase.FullFrame , ImageOptionsBase.ProgressEventHandler , 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()
Examples
Ovaj primjer pokazuje korištenje različitih razreda iz SaveOptions Namespace za izvozne svrhe. slika tipa Gif se preuzima u primjerak Slika, a zatim se izvozi u nekoliko formata.
string dir = "c:\\temp\\";
//Load an existing image (of type Gif) in an instance of Image class
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(dir + "sample.gif"))
{
//Export to BMP file format using the default options
image.Save(dir + "output.bmp", new Aspose.Imaging.ImageOptions.BmpOptions());
//Export to JPEG file format using the default options
image.Save(dir + "output.jpg", new Aspose.Imaging.ImageOptions.JpegOptions());
//Export to PNG file format using the default options
image.Save(dir + "output.png", new Aspose.Imaging.ImageOptions.PngOptions());
//Export to TIFF file format using the default options
image.Save(dir + "output.tif", new Aspose.Imaging.ImageOptions.TiffOptions(Aspose.Imaging.FileFormats.Tiff.Enums.TiffExpectedFormat.Default));
}Sljedeći primjer pokazuje kako pretvoriti multipage vektor sliku u GIF format općenito bez upućivanja na određeni tip slike.
string dir = "C:\\aspose.imaging\\net\\misc\\ImagingReleaseQATester\\Tests\\testdata\\2548";
string inputFilePath = System.IO.Path.Combine(dir, "Multipage.cdr");
string outputFilePath = System.IO.Path.Combine(dir, "Multipage.cdr.gif");
Aspose.Imaging.ImageOptionsBase exportOptions = new Aspose.Imaging.ImageOptions.GifOptions();
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Load(inputFilePath))
{
exportOptions.MultiPageOptions = null;
// Export only first two pages. These pages will be presented as animated frames in the output GIF.
Aspose.Imaging.IMultipageImage multipageImage = image as Aspose.Imaging.IMultipageImage;
if (multipageImage != null && (multipageImage.Pages != null && multipageImage.PageCount > 2))
{
exportOptions.MultiPageOptions = new Aspose.Imaging.ImageOptions.MultiPageOptions(new Aspose.Imaging.IntRange(0, 2));
}
if (image is Aspose.Imaging.VectorImage)
{
exportOptions.VectorRasterizationOptions = (Aspose.Imaging.ImageOptions.VectorRasterizationOptions)image.GetDefaultOptions(new object[] { Aspose.Imaging.Color.White, image.Width, image.Height });
exportOptions.VectorRasterizationOptions.TextRenderingHint = Aspose.Imaging.TextRenderingHint.SingleBitPerPixel;
exportOptions.VectorRasterizationOptions.SmoothingMode = Aspose.Imaging.SmoothingMode.None;
}
image.Save(outputFilePath, exportOptions);
}Ovaj primjer prikazuje kako preuzeti podatke o Pixelu u rasponu tipa boje, manipulirati rasporedom i vratiti ga na sliku. da biste izvršili ove operacije, ovaj primjer stvara novu datoteku slike (u GIF formatu) uisng MemoryStream objekt.
//Create an instance of MemoryStream
using (System.IO.MemoryStream stream = new System.IO.MemoryStream())
{
//Create an instance of GifOptions and set its various properties including the Source property
Aspose.Imaging.ImageOptions.GifOptions gifOptions = new Aspose.Imaging.ImageOptions.GifOptions();
gifOptions.Source = new Aspose.Imaging.Sources.StreamSource(stream);
//Create an instance of Image
using (Aspose.Imaging.RasterImage image = (Aspose.Imaging.RasterImage)Aspose.Imaging.Image.Create(gifOptions, 500, 500))
{
//Get the pixels of image by specifying the area as image boundary
Aspose.Imaging.Color[] pixels = image.LoadPixels(image.Bounds);
//Loop over the Array and sets color of alrenative indexed pixel
for (int index = 0; index < pixels.Length; index++)
{
if (index % 2 == 0)
{
//Set the indexed pixel color to yellow
pixels[index] = Aspose.Imaging.Color.Yellow;
}
else
{
//Set the indexed pixel color to blue
pixels[index] = Aspose.Imaging.Color.Blue;
}
}
//Apply the pixel changes to the image
image.SavePixels(image.Bounds, pixels);
// save all changes.
image.Save();
}
// Write MemoryStream to File
using (System.IO.FileStream fileStream = new System.IO.FileStream(@"C:\temp\output.gif", System.IO.FileMode.Create))
{
stream.WriteTo(fileStream);
}
}Constructors
GifOptions()
Inicijalizira novu primjenu Aspose.Imaging.ImageOptions.Gifoptions razreda.
[JsonConstructor]
public GifOptions()GifOptions(GifOptions)
Inicijalizira novu primjenu Aspose.Imaging.ImageOptions.Gifoptions razreda.
public GifOptions(GifOptions gifOptions)Parameters
gifOptions GifOptions
Opcije za GIF.
Properties
BackgroundColor
Uzmite ili postavite boju pozadine.
[JsonProperty]
public Color BackgroundColor { get; set; }Vrijednost nekretnina
BackgroundColorIndex
Pronađite ili postavite indeks boje pozadine GIF.
public byte BackgroundColorIndex { get; set; }Vrijednost nekretnina
ColorResolution
Pronađite ili postavite GIF boju rezolucije.
public byte ColorResolution { get; set; }Vrijednost nekretnina
Examples
Ovaj primjer pokazuje kako sačuvati BMP sliku u GIF formatu pomoću različitih opcija.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(1000, 1000))
{
// Fill the entire image with the blue-yellow gradient.
Aspose.Imaging.Brushes.LinearGradientBrush gradientBrush = new Aspose.Imaging.Brushes.LinearGradientBrush(
new Aspose.Imaging.Point(0, 0),
new Aspose.Imaging.Point(bmpImage.Width, bmpImage.Height),
Aspose.Imaging.Color.Blue,
Aspose.Imaging.Color.Yellow);
Aspose.Imaging.Graphics graphics = new Aspose.Imaging.Graphics(bmpImage);
graphics.FillRectangle(gradientBrush, bmpImage.Bounds);
Aspose.Imaging.ImageOptions.GifOptions saveOptions = new Aspose.Imaging.ImageOptions.GifOptions();
// The number of bits required to store a color, minus 1.
saveOptions.ColorResolution = 7;
// Palette correction means that whenever image is exported to GIF the source image colors will be analyzed
// in order to build the best matching palette (in case image Palette does not exist or not specified in the options)
saveOptions.DoPaletteCorrection = true;
// Load a GIF image in a progressive way.
// An interlaced GIF doesn't display its scanlines linearly from top to bottom, but instead reorders it
// so the content of the GIF becomes clear even before it finishes loading.
saveOptions.Interlaced = true;
// Save as a lossless GIF.
using (System.IO.Stream stream = System.IO.File.OpenWrite(dir + "output.gif"))
{
bmpImage.Save(stream, saveOptions);
System.Console.WriteLine("The size of the lossless GIF: {0} bytes.", stream.Length);
}
// Set the maximum allowed pixel difference. If greater than zero, lossy compression will be used.
// The recommended value for optimal lossy compression is 80. 30 is very light compression, 200 is heavy.
saveOptions.MaxDiff = 80;
// Save as a lossy GIF.
using (System.IO.Stream stream = System.IO.File.OpenWrite(dir + "output.lossy.gif"))
{
bmpImage.Save(stream, saveOptions);
System.Console.WriteLine("The size of the lossy GIF: {0} bytes.", stream.Length);
}
}
//The output may look like this:
//The size of the lossless GIF: 212816 bytes.
//The size of the lossy GIF: 89726 bytes.Remarks
Boja rezolucija - broj bitova po primarnoj boji dostupnana originalnu sliku, minus 1.Ova vrijednost predstavlja veličinucjelokupna paleta iz koje su boje u grafiku bileodabrano, a ne broj boja koji se zapravo koriste u grafiku.Na primjer, ako je vrijednost u ovom polju 3, onda paletaOriginalna slika je imala 4 bita po primarnoj boji dostupna za stvaranjeOva vrijednost mora biti postavljena kako bi se pokazalo bogatstvooriginalna paleta, čak i ako ne svaka boja iz cijelogPaleta je dostupna na izvornoj mašini.
DoPaletteCorrection
Dobiva ili postavlja vrijednost koja ukazuje na to je li primijenjena korekcija palete.
public bool DoPaletteCorrection { get; set; }Vrijednost nekretnina
Examples
Ovaj primjer pokazuje kako sačuvati BMP sliku u GIF formatu pomoću različitih opcija.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(1000, 1000))
{
// Fill the entire image with the blue-yellow gradient.
Aspose.Imaging.Brushes.LinearGradientBrush gradientBrush = new Aspose.Imaging.Brushes.LinearGradientBrush(
new Aspose.Imaging.Point(0, 0),
new Aspose.Imaging.Point(bmpImage.Width, bmpImage.Height),
Aspose.Imaging.Color.Blue,
Aspose.Imaging.Color.Yellow);
Aspose.Imaging.Graphics graphics = new Aspose.Imaging.Graphics(bmpImage);
graphics.FillRectangle(gradientBrush, bmpImage.Bounds);
Aspose.Imaging.ImageOptions.GifOptions saveOptions = new Aspose.Imaging.ImageOptions.GifOptions();
// The number of bits required to store a color, minus 1.
saveOptions.ColorResolution = 7;
// Palette correction means that whenever image is exported to GIF the source image colors will be analyzed
// in order to build the best matching palette (in case image Palette does not exist or not specified in the options)
saveOptions.DoPaletteCorrection = true;
// Load a GIF image in a progressive way.
// An interlaced GIF doesn't display its scanlines linearly from top to bottom, but instead reorders it
// so the content of the GIF becomes clear even before it finishes loading.
saveOptions.Interlaced = true;
// Save as a lossless GIF.
using (System.IO.Stream stream = System.IO.File.OpenWrite(dir + "output.gif"))
{
bmpImage.Save(stream, saveOptions);
System.Console.WriteLine("The size of the lossless GIF: {0} bytes.", stream.Length);
}
// Set the maximum allowed pixel difference. If greater than zero, lossy compression will be used.
// The recommended value for optimal lossy compression is 80. 30 is very light compression, 200 is heavy.
saveOptions.MaxDiff = 80;
// Save as a lossy GIF.
using (System.IO.Stream stream = System.IO.File.OpenWrite(dir + "output.lossy.gif"))
{
bmpImage.Save(stream, saveOptions);
System.Console.WriteLine("The size of the lossy GIF: {0} bytes.", stream.Length);
}
}
//The output may look like this:
//The size of the lossless GIF: 212816 bytes.
//The size of the lossy GIF: 89726 bytes.Remarks
Korekcija palete znači da svaki put kada se slika izvozi u GIF izvorne boje slika će se analizirati.kako bi se izgradila najbolja paleta koja odgovara (u slučaju da paleta slike ne postoji ili nije navedena u opcijama).Proces analize traje neko vrijeme, ali izlazna slika će imati najbolju paletu boja koja odgovara i rezultat je vizualno bolji.
HasTrailer
Dobiva ili postavlja vrijednost koja ukazuje na to ima li GIF trailer.
public bool HasTrailer { get; set; }Vrijednost nekretnina
HasTransparentColor
Dobiva ili postavlja vrijednost koja ukazuje na to ima li GIF sliku transparentnu boju.Ako je povratna vrijednost Nula, ova imovina je pretjerana izvornim kontekstom slike.
[JsonProperty]
public bool? HasTransparentColor { get; set; }Vrijednost nekretnina
bool ?
Interlaced
Istina je da se slika mora međusobno povezati.
public bool Interlaced { get; set; }Vrijednost nekretnina
Examples
Ovaj primjer pokazuje kako sačuvati BMP sliku u GIF formatu pomoću različitih opcija.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(1000, 1000))
{
// Fill the entire image with the blue-yellow gradient.
Aspose.Imaging.Brushes.LinearGradientBrush gradientBrush = new Aspose.Imaging.Brushes.LinearGradientBrush(
new Aspose.Imaging.Point(0, 0),
new Aspose.Imaging.Point(bmpImage.Width, bmpImage.Height),
Aspose.Imaging.Color.Blue,
Aspose.Imaging.Color.Yellow);
Aspose.Imaging.Graphics graphics = new Aspose.Imaging.Graphics(bmpImage);
graphics.FillRectangle(gradientBrush, bmpImage.Bounds);
Aspose.Imaging.ImageOptions.GifOptions saveOptions = new Aspose.Imaging.ImageOptions.GifOptions();
// The number of bits required to store a color, minus 1.
saveOptions.ColorResolution = 7;
// Palette correction means that whenever image is exported to GIF the source image colors will be analyzed
// in order to build the best matching palette (in case image Palette does not exist or not specified in the options)
saveOptions.DoPaletteCorrection = true;
// Load a GIF image in a progressive way.
// An interlaced GIF doesn't display its scanlines linearly from top to bottom, but instead reorders it
// so the content of the GIF becomes clear even before it finishes loading.
saveOptions.Interlaced = true;
// Save as a lossless GIF.
using (System.IO.Stream stream = System.IO.File.OpenWrite(dir + "output.gif"))
{
bmpImage.Save(stream, saveOptions);
System.Console.WriteLine("The size of the lossless GIF: {0} bytes.", stream.Length);
}
// Set the maximum allowed pixel difference. If greater than zero, lossy compression will be used.
// The recommended value for optimal lossy compression is 80. 30 is very light compression, 200 is heavy.
saveOptions.MaxDiff = 80;
// Save as a lossy GIF.
using (System.IO.Stream stream = System.IO.File.OpenWrite(dir + "output.lossy.gif"))
{
bmpImage.Save(stream, saveOptions);
System.Console.WriteLine("The size of the lossy GIF: {0} bytes.", stream.Length);
}
}
//The output may look like this:
//The size of the lossless GIF: 212816 bytes.
//The size of the lossy GIF: 89726 bytes.IsPaletteSorted
Dobiva ili postavlja vrijednost koja ukazuje na to jesu li palete ulaznice razvrstane.
public bool IsPaletteSorted { get; set; }Vrijednost nekretnina
LoopsCount
Pronađite ili postavite broj lukova (Default 1 loop)
public int LoopsCount { get; set; }Vrijednost nekretnina
MaxDiff
Dobivaju ili postavljaju maksimalnu dopuštenu razliku piksela. ako je veća od nule, koristi se kompresija gubitka.Preporučena vrijednost za optimalnu kompresije gubitka je 80. 30 je vrlo lagana kompresija, 200 je teška.To najbolje funkcionira kada se uvodi samo mali gubitak, a zbog ograničenja algoritma kompresije vrlo visoke razine gubitka neće dati toliko dobiti.Razpon dopuštenih vrijednosti je [0, 1000].
public int MaxDiff { get; set; }Vrijednost nekretnina
Examples
Ovaj primjer pokazuje kako sačuvati BMP sliku u GIF formatu pomoću različitih opcija.
string dir = "c:\\temp\\";
using (Aspose.Imaging.Image bmpImage = new Aspose.Imaging.FileFormats.Bmp.BmpImage(1000, 1000))
{
// Fill the entire image with the blue-yellow gradient.
Aspose.Imaging.Brushes.LinearGradientBrush gradientBrush = new Aspose.Imaging.Brushes.LinearGradientBrush(
new Aspose.Imaging.Point(0, 0),
new Aspose.Imaging.Point(bmpImage.Width, bmpImage.Height),
Aspose.Imaging.Color.Blue,
Aspose.Imaging.Color.Yellow);
Aspose.Imaging.Graphics graphics = new Aspose.Imaging.Graphics(bmpImage);
graphics.FillRectangle(gradientBrush, bmpImage.Bounds);
Aspose.Imaging.ImageOptions.GifOptions saveOptions = new Aspose.Imaging.ImageOptions.GifOptions();
// The number of bits required to store a color, minus 1.
saveOptions.ColorResolution = 7;
// Palette correction means that whenever image is exported to GIF the source image colors will be analyzed
// in order to build the best matching palette (in case image Palette does not exist or not specified in the options)
saveOptions.DoPaletteCorrection = true;
// Load a GIF image in a progressive way.
// An interlaced GIF doesn't display its scanlines linearly from top to bottom, but instead reorders it
// so the content of the GIF becomes clear even before it finishes loading.
saveOptions.Interlaced = true;
// Save as a lossless GIF.
using (System.IO.Stream stream = System.IO.File.OpenWrite(dir + "output.gif"))
{
bmpImage.Save(stream, saveOptions);
System.Console.WriteLine("The size of the lossless GIF: {0} bytes.", stream.Length);
}
// Set the maximum allowed pixel difference. If greater than zero, lossy compression will be used.
// The recommended value for optimal lossy compression is 80. 30 is very light compression, 200 is heavy.
saveOptions.MaxDiff = 80;
// Save as a lossy GIF.
using (System.IO.Stream stream = System.IO.File.OpenWrite(dir + "output.lossy.gif"))
{
bmpImage.Save(stream, saveOptions);
System.Console.WriteLine("The size of the lossy GIF: {0} bytes.", stream.Length);
}
}
//The output may look like this:
//The size of the lossless GIF: 212816 bytes.
//The size of the lossy GIF: 89726 bytes.PixelAspectRatio
Pronađite ili postavite GIF piksel aspekt ratio.
public byte PixelAspectRatio { get; set; }Vrijednost nekretnina
Remarks
Pixel Aspect Ratio – čimbenik koji se koristi za izračun približavanjau odnosu aspekta piksela u izvornoj slici. ako jevrijednost polja nije 0, ova približavanja aspektaIzračunava se na temelju formule:Aspect ratio = (Pixel Aspect ratio + 15) / 64Pixel Aspect ratio definiran je kao koeficient piksela.širina iznad njezine visine. raspon vrijednosti u ovom polju omogućujeSpecifikacija najvećeg piksela od 4:1 do najvećeg piksela1:4 u povećanjima od 1/64.Vrijednosti :0 - Informacije o aspektu odnosa nisu podnesene.1..255 - Vrijednost koja se koristi u izračunu.
