private static SafeControlHandle GetHandle(SurfaceHandler handler, bool scrollable, int width, int height, out LibuiEx.AreaHandler outHandler)
{
outHandler = new LibuiEx.AreaHandler
{
Draw = (nativeHandler, surface, args) => handler.Draw(surfaceCache[surface], ref args),
MouseEvent = (nativeHandler, surface, args) => handler.MouseEvent(surfaceCache[surface], ref args),
MouseCrossed = (nativeHandler, surface, left) => handler.MouseCrossed(surfaceCache[surface], left),
DragBroken = (nativeHandler, surface) => handler.DragBroken(surfaceCache[surface]),
KeyEvent = (nativeHandler, surface, args) => handler.KeyEvent(surfaceCache[surface], ref args)
};
return(!scrollable
? new SafeControlHandle(LibuiEx.NewArea(outHandler))
: new SafeControlHandle(LibuiEx.NewScrollingArea(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 LibuiEx.AreaHandler outHandler), cacheable)
{
handlerCache.Add(this, outHandler);
surfaceCache.Add(Handle, this);
}