using OpenTK.Graphics.OpenGL;
using System;
using System.Drawing;

namespace TapVisualizer1.Views
{
    class FrontTextView
    {
        string BaseText = "";
        OpenTK.Graphics.TextPrinter text = new OpenTK.Graphics.TextPrinter(OpenTK.Graphics.TextQuality.High);


        public void AddTxt(string txt)
        {
            this.BaseText += txt;
        }

        public void ClearTxt()
        {
            this.BaseText = "";

        }

        public void Render(int Width, int Height, RectangleF drawRect)
        {
            // ******** Font settings
            float size1 = Height / 50f;
            size1 = (float)Math.Min(size1, 15);
            Font printerFont1 = new Font(FontFamily.GenericMonospace, size1);

            //******** Camera
            GL.MatrixMode(MatrixMode.Projection);
            GL.PushMatrix(); // 上書きするなら必要
            GL.LoadIdentity();
            GL.MatrixMode(MatrixMode.Modelview);
            GL.PushMatrix(); // 上書きするために必要
            GL.LoadIdentity();

            GL.Viewport(0, 0, Width, Height); // 画面内に描画するサイズ
            GL.Ortho(0, Width, Height, 0, -1, 1); // 画面内の座標

            // ******** Text Rendering
            text.Begin();
            text.Print(this.BaseText, printerFont1, Color.DimGray, drawRect, OpenTK.Graphics.TextPrinterOptions.NoCache);
            text.End();

            // ******** This is equivalent:
            GL.MatrixMode(MatrixMode.Modelview);
            GL.PopMatrix();
            GL.MatrixMode(MatrixMode.Projection);
            GL.PopMatrix();
            // ******** End

            printerFont1.Dispose();
        }
    }
}