private static SafeControlHandle GetHandle(SurfaceHandler handler, bool scrollable, int width, int height, out Libui.uiAreaHandler outHandler)
{
outHandler = new Libui.uiAreaHandler
{
Draw = (nativeHandler, surface, args) =>
{
DrawEventArgs e = new DrawEventArgs(args);
handler.Draw(surfaceCache[surface], ref e);
},
MouseEvent = (nativeHandler, surface, args) =>
{
MouseEventArgs e = new MouseEventArgs(args);
handler.MouseEvent(surfaceCache[surface], ref e);
},
MouseCrossed = (nativeHandler, surface, left) =>
{
handler.MouseCrossed(surfaceCache[surface], left);
},
DragBroken = (nativeHandler, surface) => handler.DragBroken(surfaceCache[surface]),
KeyEvent = (nativeHandler, surface, args) =>
{
KeyEventArgs e = new KeyEventArgs(args);
return(handler.KeyEvent(surfaceCache[surface], ref e));
}
};
return(!scrollable
? new SafeControlHandle(Libui.Call <Libui.uiNewArea>()(outHandler))
: new SafeControlHandle(Libui.Call <Libui.uiNewScrollingArea>()(outHandler, width, height)));
}
/// <summary>
/// Initializes a new instance of the <see cref="ScrollableSurface"/> class with the specified <see cref="SurfaceHandler"/>, width, and height.
/// </summary>
/// <param name="handler">The specified event handler.</param>
/// <param name="width">The width of the <see cref="ScrollableSurface"/>.</param>
/// <param name="height">The height of the <see cref="ScrollableSurface"/>.</param>
public ScrollableSurface(SurfaceHandler handler, int width, int height) : base(handler, true, width, height)
{
}
internal SurfaceBase(SurfaceHandler handler, bool scrollable, int width, int height, bool cacheable = true) : base(GetHandle(handler, scrollable, width, height, out Libui.uiAreaHandler outHandler), cacheable)
{
handlerCache.Add(this, outHandler);
surfaceCache.Add(Handle, this);
}
/// <summary>
/// Initializes a new instance of the <see cref="Surface"/> class with the specified <see cref="SurfaceHandler"/>.
/// </summary>
/// <param name="handler">The specified event handler.</param>
public Surface(SurfaceHandler handler) : base(handler, false, 0, 0)
{
}
