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// Copyright (c) 2018-2021 Jean-Philippe Bruyère <jp_bruyere@hotmail.com>
//
// This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
using System;
using System.IO;
namespace Drawing2D
{
public abstract class CrowBackend: IDisposable
{
/// <summary>
/// GLFW Native window pointer
/// </summary>
public IntPtr hWin { get; protected set; }
public bool ownGlfwWinHandle { get; private set; }
public CrowBackend (int width, int height, IntPtr nativeWindow = default) {
ownGlfwWinHandle = (nativeWindow == IntPtr.Zero);
hWin = nativeWindow;
}
/// <summary>
/// Main rendering surface, usualy an accelerated window surface
/// </summary>
public abstract ISurface MainSurface { get; }
/// <summary>
/// Create a new surface
/// </summary>
/// <param name="width">width of the new surface</param>
/// <param name="height">height of the new surface</param>
/// <returns>the new surface instance</returns>
public abstract ISurface CreateSurface (int width, int height);
/// <summary>
/// Create a new surface backed by the byte array provided as argument
/// </summary>
/// <param name="data">a byte array to hold the pixels of the new surface</param>
/// <param name="width">width of the new surface</param>
/// <param name="height">height of the new surface</param>
/// <returns>the new surface instance</returns>
public abstract ISurface CreateSurface (byte[] data, int width, int height);
//ISurface CreateMainSurface (IntPtr glfwWinHandle, int width, int height);
public abstract IRegion CreateRegion ();
public abstract IContext CreateContext (ISurface surf);
//IPattern CreatePattern (PatternType patternType);
public abstract IGradient CreateGradient (GradientType gradientType, Rectangle bounds);
public abstract byte[] LoadBitmap (Stream stream, out Size dimensions);
public abstract ISvgHandle LoadSvg (Stream stream);
public abstract ISvgHandle LoadSvg (string svgFragment);
public abstract IContext PrepareUIFrame (IContext existingContext, IRegion clipping);
public abstract void FlushUIFrame (IContext ctx);
public abstract void ResizeMainSurface (int width, int height);
protected bool isDisposed;
public abstract void Dispose();
/*IRegion CreateRegion ();
ISurface CreateSurface (int width, int height);
ISurface CreateSurface (byte[] data, int width, int height);
ISurface CreateSurface (IntPtr glfwWinHandle, int width, int height);
IContext CreateContext (ISurface surf);
//IPattern CreatePattern (PatternType patternType);
IGradient CreateGradient (GradientType gradientType, Rectangle bounds);
byte[] LoadBitmap (Stream stream, out Size dimensions);
ISvgHandle LoadSvg (Stream stream);
ISvgHandle LoadSvg (string svgFragment);*/
}
}
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