AutoPatientInfoRecorder/src/AntdUI/Lib/Image/UnsafeBitmap.cs

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// COPYRIGHT (C) Tom. ALL RIGHTS RESERVED.
// THE AntdUI PROJECT IS AN WINFORM LIBRARY LICENSED UNDER THE Apache-2.0 License.
// 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.
// GITEE: https://gitee.com/antdui/AntdUI
// GITHUB: https://github.com/AntdUI/AntdUI
// CSDN: https://blog.csdn.net/v_132
// QQ: 17379620

using System;
using System.Drawing;
using System.Drawing.Imaging;

namespace AntdUI
{
    public unsafe class UnsafeBitmap : IDisposable
    {
        public ColorBgra* Pointer { get; private set; }
        public bool IsLocked { get; private set; }
        public int Width { get; private set; }
        public int Height { get; private set; }

        public int PixelCount => Width * Height;

        private Bitmap bitmap;
        private BitmapData bitmapData;

        public UnsafeBitmap(Bitmap bitmap, bool lockBitmap = false, ImageLockMode imageLockMode = ImageLockMode.ReadWrite)
        {
            this.bitmap = bitmap;
            Width = bitmap.Width;
            Height = bitmap.Height;

            if (lockBitmap)
            {
                Lock(imageLockMode);
            }
        }

        public void Lock(ImageLockMode imageLockMode = ImageLockMode.ReadWrite)
        {
            if (!IsLocked)
            {
                IsLocked = true;
                bitmapData = bitmap.LockBits(new Rectangle(0, 0, Width, Height), imageLockMode, PixelFormat.Format32bppArgb);
                Pointer = (ColorBgra*)bitmapData.Scan0.ToPointer();
            }
        }

        public void Unlock()
        {