Class StreamSource
Numele spaţiului: Aspose.Imaging.Sources Asamblare: Aspose.Imaging.dll (25.4.0)
Este o sursă de flux.
[JsonObject(MemberSerialization.OptIn)]
public sealed class StreamSource : Source
Inheritance
object ← Source ← StreamSource
Membrii moștenitori
Source.GetStreamContainer() , object.GetType() , object.ToString() , object.Equals(object?) , object.Equals(object?, object?) , object.ReferenceEquals(object?, object?) , object.GetHashCode()
Examples
Acest exemplu demonstrează utilizarea System.IO.Stream pentru a crea un nou fișier Image (un tip JPEG)
//Creates an instance of JpegOptions and set its various properties
Aspose.Imaging.ImageOptions.JpegOptions jpegOptions = new Aspose.Imaging.ImageOptions.JpegOptions();
//Create an instance of System.IO.Stream
System.IO.Stream stream = new System.IO.FileStream(@"C:\temp\sample.jpeg", System.IO.FileMode.Create);
//Define the source property for the instance of JpegOptions
//Second boolean parameter determins if the Stream is disposed once get out of scope
jpegOptions.Source = new Aspose.Imaging.Sources.StreamSource(stream, true);
//Creates an instance of Image and call Create method with JpegOptions as parameter to initialize the Image object
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Create(jpegOptions, 500, 500))
{
//do some image processing
}
Acest exemplu utilizează clasa grafică pentru a crea forme primitive pe suprafața imaginii. Pentru a demonstra operațiunea, exemplul creează o nouă imagine în format PNG și desenează forme primitive pe superficialul imagini folosind metodele de desenare expuse de clasă grafică.
//Creates an instance of FileStream
using (System.IO.FileStream stream = new System.IO.FileStream(@"C:\temp\output.png", System.IO.FileMode.Create))
{
//Create an instance of PngOptions and set its various properties
Aspose.Imaging.ImageOptions.PngOptions pngOptions = new Aspose.Imaging.ImageOptions.PngOptions();
//Set the Source for PngOptions
pngOptions.Source = new Aspose.Imaging.Sources.StreamSource(stream);
//Create an instance of Image
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Create(pngOptions, 500, 500))
{
//Create and initialize an instance of Graphics class
Aspose.Imaging.Graphics graphics = new Aspose.Imaging.Graphics(image);
//Clear Graphics surface
graphics.Clear(Aspose.Imaging.Color.Wheat);
//Draw an Arc by specifying the Pen object having Black color,
//a Rectangle surrounding the Arc, Start Angle and Sweep Angle
graphics.DrawArc(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Black, 2), new Aspose.Imaging.Rectangle(200, 200, 100, 200), 0, 300);
//Draw a Bezier by specifying the Pen object having Blue color and co-ordinate Points.
graphics.DrawBezier(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Blue, 2), new Aspose.Imaging.Point(250, 100), new Aspose.Imaging.Point(300, 30), new Aspose.Imaging.Point(450, 100), new Aspose.Imaging.Point(235, 25));
//Draw a Curve by specifying the Pen object having Green color and an array of Points
graphics.DrawCurve(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Green, 2), new[] { new Aspose.Imaging.Point(100, 200), new Aspose.Imaging.Point(100, 350), new Aspose.Imaging.Point(200, 450) });
//Draw an Ellipse using the Pen object and a surrounding Rectangle
graphics.DrawEllipse(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Yellow, 2), new Aspose.Imaging.Rectangle(300, 300, 100, 100));
//Draw a Line
graphics.DrawLine(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Violet, 2), new Aspose.Imaging.Point(100, 100), new Aspose.Imaging.Point(200, 200));
//Draw a Pie segment
graphics.DrawPie(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Silver, 2), new Aspose.Imaging.Rectangle(new Aspose.Imaging.Point(200, 20), new Aspose.Imaging.Size(200, 200)), 0, 45);
//Draw a Polygon by specifying the Pen object having Red color and an array of Points
graphics.DrawPolygon(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Red, 2), new[] { new Aspose.Imaging.Point(20, 100), new Aspose.Imaging.Point(20, 200), new Aspose.Imaging.Point(220, 20) });
//Draw a Rectangle
graphics.DrawRectangle(new Aspose.Imaging.Pen(Aspose.Imaging.Color.Orange, 2), new Aspose.Imaging.Rectangle(new Aspose.Imaging.Point(250, 250), new Aspose.Imaging.Size(100, 100)));
//Create a SolidBrush object and set its various properties
Aspose.Imaging.Brushes.SolidBrush brush = new Aspose.Imaging.Brushes.SolidBrush();
brush.Color = Color.Purple;
brush.Opacity = 100;
//Draw a String using the SolidBrush object and Font, at specific Point
graphics.DrawString("This image is created by Aspose.Imaging API", new Aspose.Imaging.Font("Times New Roman", 16), brush, new Aspose.Imaging.PointF(50, 400));
// save all changes.
image.Save();
}
}
Constructors
StreamSource()
Inițializează o nouă instanță a clasei Aspose.Imaging.Sources.StreamSource.
[JsonConstructor]
public StreamSource()
StreamSource(Stream)
Inițializează o nouă instanță a clasei Aspose.Imaging.Sources.StreamSource.
public StreamSource(Stream stream)
Parameters
stream
Stream
Fluxul să se deschidă.
Examples
Acest exemplu arată cum să încărcați informațiile Pixel într-un Array de tip de culoare, să manipulați array-ul și să-l puneți înapoi la imagine. Pentru a efectua aceste operații, acest exemplu creează un nou fișier Image (în format GIF) uisng MemoryStream obiect.
//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);
}
}
StreamSource(Războiul, bool)
Inițializează o nouă instanță a clasei Aspose.Imaging.Sources.StreamSource.
public StreamSource(Stream stream, bool disposeStream)
Parameters
stream
Stream
Fluxul să se deschidă.
disposeStream
bool
În cazul în care este setat la „veritabil”, fluxul va fi eliminat.
Examples
Acest exemplu demonstrează utilizarea System.IO.Stream pentru a crea un nou fișier Image (un tip JPEG)
//Creates an instance of JpegOptions and set its various properties
Aspose.Imaging.ImageOptions.JpegOptions jpegOptions = new Aspose.Imaging.ImageOptions.JpegOptions();
//Create an instance of System.IO.Stream
System.IO.Stream stream = new System.IO.FileStream(@"C:\temp\sample.jpeg", System.IO.FileMode.Create);
//Define the source property for the instance of JpegOptions
//Second boolean parameter determins if the Stream is disposed once get out of scope
jpegOptions.Source = new Aspose.Imaging.Sources.StreamSource(stream, true);
//Creates an instance of Image and call Create method with JpegOptions as parameter to initialize the Image object
using (Aspose.Imaging.Image image = Aspose.Imaging.Image.Create(jpegOptions, 500, 500))
{
//do some image processing
}
Properties
DisposeStream
Obține o valoare care indică dacă fluxul trebuie eliminat ori de câte ori recipientul este eliminat.
public bool DisposeStream { get; }
Valoarea proprietății
Stream
A primit curentul.
public Stream Stream { get; }
Valoarea proprietății
Methods
GetStreamContainer()
Încărcați containerul de flux.
public override StreamContainer GetStreamContainer()
Returns
Containerul de flux.
Remarks
Utilizați cu atenție. veți trebui să eliminați containerul de flux după recuperare.