using System.Drawing;

namespace Dashboard.Drawing.OpenGL
{
    /// <summary>
    /// Interface for GL context operations
    /// </summary>
    public interface IGLContext
    {
        /// <summary>
        /// The associated group for context sharing.
        /// </summary>
        /// <remarks>-1 assigns no group.</remarks>
        public int ContextGroup { get; }

        /// <summary>
        /// The size of the framebuffer in pixels.
        /// </summary>
        public Size FramebufferSize { get; }

        /// <summary>
        /// Called when the context is disposed.
        /// </summary>
        event Action Disposed;
    }

    /// <summary>
    /// Extension interface for GL contexts in a DPI-aware environment.
    /// </summary>
    public interface IDpiAwareGLContext : IGLContext
    {
        /// <summary>
        /// Dpi for current context.
        /// </summary>
        public float Dpi { get; }

        /// <summary>
        /// Scale for the current context. This will be used to scale drawn geometry.
        /// </summary>
        public float Scale { get; }
    }
}