356 lines
14 KiB
C#
356 lines
14 KiB
C#
#if UNITY_STANDALONE_WIN
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using System;
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using System.Runtime.InteropServices;
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using UnityEngine;
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using System.Diagnostics;
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using AOT;
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using UnityEngine.Gonbest.MagicCube;
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using System.Collections;
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/// <summary>
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///强制设置Unity游戏窗口的长宽比。你可以调整窗口的大小，他会强制保持一定比例
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///通过拦截窗口大小调整事件(WindowProc回调)并相应地修改它们来实现的
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///也可以用像素为窗口设置最小/最大宽度和高度
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///长宽比和最小/最大分辨率都与窗口区域有关，标题栏和边框不包括在内
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///该脚本还将在应用程序处于全屏状态时强制设置长宽比。当你切换到全屏，
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///应用程序将自动设置为当前显示器上可能的最大分辨率，而仍然保持固定比。如果显示器没有相同的宽高比，则会在左/右或上/下添加黑条
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///确保你在PlayerSetting中设置了“Resizable Window”，否则无法调整大小
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///如果取消不支持的长宽比在PlayerSetting中设置“Supported Aspect Rations”
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///注意:因为使用了WinAPI，所以只能在Windows上工作。在Windows 10上测试过
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/// </summary>
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public class AspectRatioController : MonoBehaviour
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{
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public static void RunScript()
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{
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var go = GameObject.Find("[AspectRatioController]");
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if (go == null)
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{
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go = new GameObject("[AspectRatioController]");
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GameObject.DontDestroyOnLoad(go);
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}
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var script = go.GetComponent<AspectRatioController>();
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if (script == null)
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{
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script = go.AddComponent<AspectRatioController>();
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}
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go.SetActive(true);
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script.enabled = true;
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}
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// 最小值和最大值的窗口宽度/高度像素
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private static int minWidthPixel = 256;
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private static int minHeightPixel = 256;
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// WinAPI相关定义
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#region WINAPI
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// 当窗口调整时,WM_SIZING消息通过WindowProc回调发送到窗口
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private const int WM_SIZING = 0x214;
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// WM大小调整消息的参数
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private const int WMSZ_LEFT = 1;
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private const int WMSZ_RIGHT = 2;
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private const int WMSZ_TOP = 3;
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private const int WMSZ_BOTTOM = 6;
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// 获取指向WindowProc函数的指针
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private const int GWLP_WNDPROC = -4;
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// 委托设置为新的WindowProc回调函数
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private delegate IntPtr WndProcDelegate(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam);
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private WndProcDelegate wndProcDelegate;
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// 将消息信息传递给指定的窗口过程
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[DllImport("user32.dll")]
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private static extern IntPtr CallWindowProc(IntPtr lpPrevWndFunc, IntPtr hWnd, uint Msg, IntPtr wParam, IntPtr lParam);
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// 检索指定窗口的边框的尺寸
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// 尺寸是在屏幕坐标中给出的，它是相对于屏幕左上角的
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[DllImport("user32.dll", SetLastError = true)]
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private static extern bool GetWindowRect(IntPtr hwnd, ref RECT lpRect);
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//检索窗口客户区域的坐标。客户端坐标指定左上角
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//以及客户区的右下角。因为客户机坐标是相对于左上角的
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//在窗口的客户区域的角落，左上角的坐标是(0,0)
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[DllImport("user32.dll")]
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private static extern bool GetClientRect(IntPtr hWnd, ref RECT lpRect);
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// 更改指定窗口的属性。该函数还将指定偏移量的32位(长)值设置到额外的窗口内存中
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[DllImport("user32.dll", EntryPoint = "SetWindowLong", CharSet = CharSet.Auto)]
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private static extern IntPtr SetWindowLong32(IntPtr hWnd, int nIndex, IntPtr dwNewLong);
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//更改指定窗口的属性。该函数还在额外的窗口内存中指定的偏移量处设置一个值
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[DllImport("user32.dll", EntryPoint = "SetWindowLongPtr", CharSet = CharSet.Auto)]
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private static extern IntPtr SetWindowLongPtr64(IntPtr hWnd, int nIndex, IntPtr dwNewLong);
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public delegate bool WNDENUMPROC(IntPtr hwnd, uint lParam);
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[DllImport("user32.dll", SetLastError = true)]
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public static extern bool EnumWindows(WNDENUMPROC lpEnumFunc, uint lParam);
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[DllImport("user32.dll", SetLastError = true)]
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public static extern IntPtr GetParent(IntPtr hWnd);
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[DllImport("user32.dll")]
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public static extern uint GetWindowThreadProcessId(IntPtr hWnd, ref uint lpdwProcessId);
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[DllImport("kernel32.dll")]
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public static extern void SetLastError(uint dwErrCode);
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[DllImport("user32.dll")]
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static extern bool CloseWindow(IntPtr hwnd);
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// Unity窗口的窗口句柄
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private static IntPtr unityHWnd;
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// 指向旧WindowProc回调函数的指针
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private static IntPtr oldWndProcPtr;
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// 指向我们自己的窗口回调函数的指针
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private static IntPtr newWndProcPtr;
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/// <summary>
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/// WinAPI矩形定义。
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/// </summary>
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[StructLayout(LayoutKind.Sequential)]
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public struct RECT
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{
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public int Left;
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public int Top;
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public int Right;
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public int Bottom;
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}
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#endregion
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void Start()
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{
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// 不要在Unity编辑器中注册WindowProc回调函数，它会指向Unity编辑器窗口，而不是Game视图
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// 找到主Unity窗口的窗口句柄
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unityHWnd = GetProcessWnd();
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if (unityHWnd == IntPtr.Zero)
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{
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return;
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}
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// Register (replace) WindowProc callback。每当一个窗口事件被触发时，这个函数都会被调用
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//例如调整大小或移动窗口
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//保存旧的WindowProc回调函数，因为必须从新回调函数中调用它
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wndProcDelegate = wndProc;
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newWndProcPtr = Marshal.GetFunctionPointerForDelegate(wndProcDelegate);
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oldWndProcPtr = SetWindowLong(unityHWnd, GWLP_WNDPROC, newWndProcPtr);
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Application.wantsToQuit += () =>
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{
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if (AppPersistData.WantExitResult)
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{
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if (Screen.width != 1600 || Screen.height != 800)
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{
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CloseWindow(unityHWnd);
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//退出时设置分辨率，用以下次启动
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Screen.SetResolution(1600, 800, false);
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StartCoroutine(StartQuitCoroutine());
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return false;
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}
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}
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return true;
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};
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Application.quitting += () =>
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{
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SetWindowLong(unityHWnd, GWLP_WNDPROC, oldWndProcPtr);
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};
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}
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private IEnumerator StartQuitCoroutine()
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{
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yield return new WaitForEndOfFrame();
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Application.Quit();
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}
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static IntPtr findeHwnd = IntPtr.Zero;
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[MonoPInvokeCallback(typeof(WNDENUMPROC))]
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static bool OnWindowEnum(IntPtr hwnd, uint lParam)
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{
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uint id = 0;
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if (GetParent(hwnd) == IntPtr.Zero)
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{
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GetWindowThreadProcessId(hwnd, ref id);
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if (id == lParam) // 找到进程对应的主窗口句柄
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{
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findeHwnd = hwnd; // 把句柄缓存起来
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SetLastError(0); // 设置无错误
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return false; // 返回 false 以终止枚举窗口
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}
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}
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return true;
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}
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public static IntPtr GetProcessWnd()
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{
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IntPtr ptrWnd = IntPtr.Zero;
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uint pid = (uint)Process.GetCurrentProcess().Id; // 当前进程 ID
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bool bResult = EnumWindows(OnWindowEnum, pid);
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ptrWnd = findeHwnd;
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return (!bResult && Marshal.GetLastWin32Error() == 0) ? ptrWnd : IntPtr.Zero;
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}
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/// <summary>
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/// WindowProc回调。应用程序定义的函数，用来处理发送到窗口的消息
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/// </summary>
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/// <param name="msg">用于标识事件的消息</param>
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/// <param name="wParam">额外的信息信息。该参数的内容取决于uMsg参数的值 </param>
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/// <param name="lParam">其他消息的信息。该参数的内容取决于uMsg参数的值 </param>
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/// <returns></returns>
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[MonoPInvokeCallback(typeof(WndProcDelegate))]
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static IntPtr wndProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam)
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{
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// 检查消息类型
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// resize事件
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if (msg == WM_SIZING)
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{
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// 获取窗口大小结构体
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RECT rc = (RECT)Marshal.PtrToStructure(lParam, typeof(RECT));
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// 计算窗口边框的宽度和高度
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RECT windowRect = new RECT();
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GetWindowRect(unityHWnd, ref windowRect);
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RECT clientRect = new RECT();
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GetClientRect(unityHWnd, ref clientRect);
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int borderWidth = windowRect.Right - windowRect.Left - (clientRect.Right - clientRect.Left);
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int borderHeight = windowRect.Bottom - windowRect.Top - (clientRect.Bottom - clientRect.Top);
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// 在应用宽高比之前删除边框(包括窗口标题栏)
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rc.Right -= borderWidth;
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rc.Bottom -= borderHeight;
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// 限制窗口大小
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int newWidth = rc.Right - rc.Left;
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if (newWidth < minWidthPixel)
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{
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newWidth = minWidthPixel;
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}
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int newHeight = rc.Bottom - rc.Top;
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if (newHeight < minHeightPixel)
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{
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newHeight = minHeightPixel;
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}
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// 根据纵横比和方向调整大小
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switch (wParam.ToInt32())
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{
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case WMSZ_LEFT:
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if (newWidth < newHeight)
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{
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//高度配合缩小
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newHeight = newWidth;
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}
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else if (newWidth > newHeight * 2)
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{
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//高度配合放大
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newHeight = newWidth / 2;
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}
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rc.Left = rc.Right - newWidth;
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rc.Bottom = rc.Top + newHeight;
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break;
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case WMSZ_RIGHT:
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if (newWidth < newHeight)
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{
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//高度配合缩小
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newHeight = newWidth;
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}
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else if (newWidth > newHeight * 2)
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{
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//高度配合放大
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newHeight = newWidth / 2;
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}
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rc.Right = rc.Left + newWidth;
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rc.Bottom = rc.Top + newHeight;
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break;
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case WMSZ_TOP:
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if (newWidth < newHeight)
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{
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//宽度配合放大
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newWidth = newHeight;
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}
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else if (newWidth > newHeight * 2)
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{
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//宽度配合缩小
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newWidth = newHeight * 2;
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}
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rc.Top = rc.Bottom - newHeight;
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rc.Right = rc.Left + newWidth;
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break;
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case WMSZ_BOTTOM:
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if (newWidth < newHeight)
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{
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//宽度配合放大
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newWidth = newHeight;
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}
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else if (newWidth > newHeight * 2)
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{
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//宽度配合缩小
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newWidth = newHeight * 2;
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}
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rc.Bottom = rc.Top + newHeight;
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rc.Right = rc.Left + newWidth;
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break;
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case WMSZ_RIGHT + WMSZ_BOTTOM:
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if (newWidth < newHeight)
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{
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//宽度配合放大
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newHeight = newWidth;
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}
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else if (newWidth > newHeight * 2)
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{
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//宽度配合缩小
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newHeight = newWidth / 2;
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}
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rc.Right = rc.Left + newWidth;
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rc.Bottom = rc.Top + newHeight;
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break;
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case WMSZ_RIGHT + WMSZ_TOP:
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if (newWidth < newHeight)
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{
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//宽度配合放大
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newHeight = newWidth;
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}
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else if (newWidth > newHeight * 2)
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{
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//宽度配合缩小
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newHeight = newWidth / 2;
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}
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rc.Right = rc.Left + newWidth;
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rc.Top = rc.Bottom - newHeight;
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break;
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case WMSZ_LEFT + WMSZ_BOTTOM:
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if (newWidth < newHeight)
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{
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//宽度配合放大
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newHeight = newWidth;
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}
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else if (newWidth > newHeight * 2)
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{
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//宽度配合缩小
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newHeight = newWidth / 2;
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}
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rc.Left = rc.Right - newWidth;
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rc.Bottom = rc.Top + newHeight;
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break;
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case WMSZ_LEFT + WMSZ_TOP:
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if (newWidth < newHeight)
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{
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//宽度配合放大
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newHeight = newWidth;
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}
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else if (newWidth > newHeight * 2)
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{
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//宽度配合缩小
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newHeight = newWidth / 2;
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}
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rc.Left = rc.Right - newWidth;
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rc.Top = rc.Bottom - newHeight;
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break;
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}
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// 添加边界
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rc.Right += borderWidth;
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rc.Bottom += borderHeight;
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// 回写更改的窗口参数
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Marshal.StructureToPtr(rc, lParam, true);
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}
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// 调用原始的WindowProc函数
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return CallWindowProc(oldWndProcPtr, hWnd, msg, wParam, lParam);
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}
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/// <summary>
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/// 调用SetWindowLong32或SetWindowLongPtr64，取决于可执行文件是32位还是64位。
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/// 这样，我们就可以同时构建32位和64位的可执行文件而不会遇到问题。
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/// </summary>
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/// <param name="hWnd">The window handle.</param>
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/// <param name="nIndex">要设置的值的从零开始的偏移量</param>
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/// <param name="dwNewLong">The replacement value.</param>
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/// <returns>返回值是指定偏移量的前一个值。否则零.</returns>
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private static IntPtr SetWindowLong(IntPtr hWnd, int nIndex, IntPtr dwNewLong)
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{
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if (IntPtr.Size == 4)
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{
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//32位系统
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return SetWindowLong32(hWnd, nIndex, dwNewLong);
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}
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return SetWindowLongPtr64(hWnd, nIndex, dwNewLong);
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}
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}
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#endif |