/*
 * Copyright 2012 ZXing.Net authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

namespace ZXing.Rendering
{
    /// <summary>
    /// represents the generated code as a byte array with pixel data (4 byte per pixel, BGRA)
    /// </summary>
    public sealed partial class PixelData
    {
        /// <summary>
        /// converts the pixel data to a bitmap object
        /// </summary>
        /// <returns></returns>
        public System.Drawing.Bitmap ToBitmap()
        {
            var bmp = new System.Drawing.Bitmap(Width, Height, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
            bmp.SetResolution(96, 96);
            var bmpData = bmp.LockBits(
               new System.Drawing.Rectangle(0, 0, bmp.Width, bmp.Height),
               System.Drawing.Imaging.ImageLockMode.WriteOnly,
               System.Drawing.Imaging.PixelFormat.Format32bppArgb);

            try
            {
                //Copy the data from the byte array into BitmapData.Scan0
                System.Runtime.InteropServices.Marshal.Copy(Pixels, 0, bmpData.Scan0, Pixels.Length);
            }
            finally
            {
                //Unlock the pixels
                bmp.UnlockBits(bmpData);
            }

            return bmp;
        }
    }
}
