Subversion Repositories AndroidProjects

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Drawing;

using System.Data;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

using System.Drawing.Imaging;

using System.Runtime.InteropServices;

namespace ColorPicker

{

    public partial class ColorWidget: UserControl

    {

        private Bitmap mGradientBox = null;

        public ColorWidget()

        {

            InitializeComponent();

            mGradientBox = new Bitmap(200, 200);

            Rectangle rect = new Rectangle(0, 0, 200, 200);

            BitmapData data = mGradientBox.LockBits(rect, System.Drawing.Imaging.ImageLockMode.ReadWrite, System.Drawing.Imaging.PixelFormat.Format24bppRgb);

            IntPtr ptr = data.Scan0;

            int bytes = data.Stride * mGradientBox.Height;

            var rgbValues = new byte[bytes];

            /*for (int i = 0; i < bytes; i++)

            {

                rgbValues[i] = (byte)((i * 255) / (3 * bytes));

            }*/

            int width = data.Stride / 3;

            int height = mGradientBox.Height;

            int i = 0;

            float h = 0;

            for (int x = 0; x < width; x++)

            {

                for (int y = 0; y < height; y++)

                {

                    float s = (float)x / (float)width;

                    float v = (float)y / (float)height;

                    MathUtil

                }

            }

            Marshal.Copy(rgbValues, 0, ptr, bytes);

            mGradientBox.UnlockBits(data);

        }

        private void colorWheelBox_Paint(object sender, PaintEventArgs e)

        {

            Graphics g = e.Graphics;

            g.DrawString("This is a diagonal line drawn on the control", new Font("Arial", 10), System.Drawing.Brushes.Blue, new Point(30, 30));

            g.DrawLine(System.Drawing.Pens.Red, colorWheelBox.Left, colorWheelBox.Top, colorWheelBox.Right, colorWheelBox.Bottom);

            Rectangle rect = new Rectangle(10, 10, Width - 20, Height - 20);

            g.DrawImage(mGradientBox, rect);

        }

    }

}