Class StreamSource
Class StreamSource
名称: Aspose.Imaging.Sources アセンション: Aspose.Imaging.dll (25.4.0)
流れ源である。
[JsonObject(MemberSerialization.OptIn)]
public sealed class StreamSource : SourceInheritance
object ← Source ← StreamSource
相続人
Source.GetStreamContainer() , object.GetType() , object.ToString() , object.Equals(object?) , object.Equals(object?, object?) , object.ReferenceEquals(object?, object?) , object.GetHashCode()
Examples
この例では、新しい画像ファイルを作成するために System.IO.Stream を使用することを示しています(JPEG タイプ)
//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
}この例では、画像表面に原始的な形状を作成するためにグラフィッククラスを使用します. 操作を示すために、例は PNG 形式の新しい画像を作成し、画像表面に原始的な形状を描き、グラフィッククラスが示すドラッグ方法を使用します。
//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()
Aspose.Imaging.Sources.StreamSourceクラスの新しい例を開始します。
[JsonConstructor]
public StreamSource()StreamSource(Stream)
Aspose.Imaging.Sources.StreamSourceクラスの新しい例を開始します。
public StreamSource(Stream stream)Parameters
stream Stream
流れが開きます。
Examples
この例では、ピクセル情報をタイプ色の範囲内でロードする方法を示し、範囲を操作し、画像に戻します。これらの操作を実行するには、この例では、新しい画像ファイル(GIF形式)を作成します。
//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(ストリーム、ボール)
Aspose.Imaging.Sources.StreamSourceクラスの新しい例を開始します。
public StreamSource(Stream stream, bool disposeStream)Parameters
stream Stream
流れが開きます。
disposeStream bool
「真実」に設定された場合、流れは廃止されます。
Examples
この例では、新しい画像ファイルを作成するために System.IO.Stream を使用することを示しています(JPEG タイプ)
//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
コンテナが解体されるたびに流れが解体されるかどうかを示す値を得る。
public bool DisposeStream { get; }不動産価値
Stream
流れを受け取る。
public Stream Stream { get; }不動産価値
Methods
GetStreamContainer()
コンテナを流す。
public override StreamContainer GetStreamContainer()Returns
ストリームコンテナ
Remarks
慎重に使用します. 回収後、ストリームコンテナを解除する必要があります。
