ICC CE 1.4.1 beta
This commit is contained in:
CJK_mkp
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using System;
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using System.Runtime.InteropServices;
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using System.Windows;
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using System.Windows.Interop;
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using System.Windows.Forms;
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namespace Ink_Canvas.Helpers
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{
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/// <summary>
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/// 防止窗口进入全屏状态的辅助类
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/// </summary>
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public static partial class AvoidFullScreenHelper
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{
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private static readonly DependencyProperty IsAvoidFullScreenEnabledProperty =
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DependencyProperty.RegisterAttached(
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"IsAvoidFullScreenEnabled",
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typeof(bool),
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typeof(AvoidFullScreenHelper));
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private static bool _isBoardMode = false;
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public static void SetBoardMode(bool isBoardMode)
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{
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_isBoardMode = isBoardMode;
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}
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public static void StartAvoidFullScreen(Window window)
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{
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if (window == null)
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throw new ArgumentNullException(nameof(window));
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if (!(bool)window.GetValue(IsAvoidFullScreenEnabledProperty))
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{
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var hwndSource = PresentationSource.FromVisual(window) as HwndSource;
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if (hwndSource != null)
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{
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hwndSource.AddHook(KeepInWorkingAreaHook);
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window.SetValue(IsAvoidFullScreenEnabledProperty, true);
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}
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}
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}
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public static void StopAvoidFullScreen(Window window)
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{
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if (window == null)
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throw new ArgumentNullException(nameof(window));
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if ((bool)window.GetValue(IsAvoidFullScreenEnabledProperty))
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{
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var hwndSource = PresentationSource.FromVisual(window) as HwndSource;
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if (hwndSource != null)
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{
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hwndSource.RemoveHook(KeepInWorkingAreaHook);
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window.ClearValue(IsAvoidFullScreenEnabledProperty);
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}
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}
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}
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public static bool GetIsAvoidFullScreenEnabled(DependencyObject obj) => (bool)obj.GetValue(IsAvoidFullScreenEnabledProperty);
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public static void SetIsAvoidFullScreenEnabled(DependencyObject obj, bool value) => obj.SetValue(IsAvoidFullScreenEnabledProperty, value);
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private static IntPtr KeepInWorkingAreaHook(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
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{
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// 只拦截主画布窗口的全屏（最大化）操作
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var window = HwndSource.FromHwnd(hwnd)?.RootVisual as Window;
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if (window == null) return IntPtr.Zero;
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// 这里假设主画布窗口类名为MainWindow（如有不同请调整）
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if (window.GetType().Name != "MainWindow") return IntPtr.Zero;
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if (_isBoardMode)
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{
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// 画板模式下允许全屏/最大化，不拦截
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return IntPtr.Zero;
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}
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const int WM_WINDOWPOSCHANGING = 0x0046;
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const int WM_SYSCOMMAND = 0x0112;
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const int SC_MAXIMIZE = 0xF030;
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if (msg == WM_SYSCOMMAND && wParam.ToInt32() == SC_MAXIMIZE)
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{
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// 拦截最大化命令，强制还原窗口并调整到工作区
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window.WindowState = WindowState.Normal;
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var workingArea = GetWorkingArea(new Rect(window.Left, window.Top, window.Width, window.Height));
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window.Left = workingArea.Left;
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window.Top = workingArea.Top;
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window.Width = workingArea.Width;
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window.Height = workingArea.Height;
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handled = true;
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return IntPtr.Zero;
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}
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if (msg != WM_WINDOWPOSCHANGING)
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return IntPtr.Zero;
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try
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{
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var pos = (WindowPosition)Marshal.PtrToStructure(lParam, typeof(WindowPosition));
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if ((pos.Flags & (WindowPositionFlags.SWP_NOMOVE | WindowPositionFlags.SWP_NOSIZE)) != 0)
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return IntPtr.Zero;
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// 只处理主画布窗口
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// 计算目标矩形
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var targetRect = new Rect(
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(pos.Flags & WindowPositionFlags.SWP_NOMOVE) == 0 ? pos.X : window.Left,
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(pos.Flags & WindowPositionFlags.SWP_NOMOVE) == 0 ? pos.Y : window.Top,
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(pos.Flags & WindowPositionFlags.SWP_NOSIZE) == 0 ? pos.Width : window.Width,
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(pos.Flags & WindowPositionFlags.SWP_NOSIZE) == 0 ? pos.Height : window.Height);
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var workingArea = GetWorkingArea(targetRect);
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var adjustedRect = AdjustRectToWorkingArea(targetRect, workingArea);
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pos.X = (int)adjustedRect.Left;
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pos.Y = (int)adjustedRect.Top;
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pos.Width = (int)adjustedRect.Width;
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pos.Height = (int)adjustedRect.Height;
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pos.Flags &= ~(WindowPositionFlags.SWP_NOSIZE | WindowPositionFlags.SWP_NOMOVE | WindowPositionFlags.SWP_NOREDRAW);
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pos.Flags |= WindowPositionFlags.SWP_NOCOPYBITS;
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Marshal.StructureToPtr(pos, lParam, false);
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}
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catch (Exception ex)
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{
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Console.WriteLine($"窗口位置调整失败: {ex.Message}");
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}
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return IntPtr.Zero;
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}
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private static Rect GetWorkingArea(Rect windowRect)
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{
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// 获取所有显示器
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var screens = System.Windows.Forms.Screen.AllScreens;
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// 确定窗口主要位于哪个显示器上
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System.Windows.Forms.Screen targetScreen = null;
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double maxIntersection = 0;
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foreach (var screen in screens)
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{
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var screenRect = new Rect(
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screen.WorkingArea.X,
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screen.WorkingArea.Y,
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screen.WorkingArea.Width,
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screen.WorkingArea.Height);
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var intersection = Rect.Intersect(windowRect, screenRect);
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if (intersection.Width * intersection.Height > maxIntersection)
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{
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maxIntersection = intersection.Width * intersection.Height;
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targetScreen = screen;
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}
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}
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// 如果没找到，使用主显示器
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if (targetScreen == null)
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targetScreen = System.Windows.Forms.Screen.PrimaryScreen;
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return new Rect(
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targetScreen.WorkingArea.X,
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targetScreen.WorkingArea.Y,
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targetScreen.WorkingArea.Width,
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targetScreen.WorkingArea.Height);
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}
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private static Rect AdjustRectToWorkingArea(Rect windowRect, Rect workingArea)
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{
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// 调整尺寸以适应工作区域
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if (windowRect.Width > workingArea.Width)
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windowRect.Width = workingArea.Width;
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if (windowRect.Height > workingArea.Height)
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windowRect.Height = workingArea.Height;
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// 调整位置以确保窗口完全在工作区域内
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if (windowRect.Left < workingArea.Left)
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windowRect.X = workingArea.Left;
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else if (windowRect.Right > workingArea.Right)
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windowRect.X = workingArea.Right - windowRect.Width;
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if (windowRect.Top < workingArea.Top)
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windowRect.Y = workingArea.Top;
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else if (windowRect.Bottom > workingArea.Bottom)
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windowRect.Y = workingArea.Bottom - windowRect.Height;
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return windowRect;
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}
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}
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// 使用WPF原生类型替代Win32结构
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[StructLayout(LayoutKind.Sequential)]
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internal struct WindowPosition
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{
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public IntPtr Hwnd;
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public IntPtr HwndInsertAfter;
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public int X;
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public int Y;
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public int Width;
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public int Height;
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public WindowPositionFlags Flags;
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}
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[Flags]
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internal enum WindowPositionFlags : uint
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{
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SWP_NOSIZE = 0x0001,
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SWP_NOMOVE = 0x0002,
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SWP_NOZORDER = 0x0004,
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SWP_NOREDRAW = 0x0008,
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SWP_NOACTIVATE = 0x0010,
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SWP_FRAMECHANGED = 0x0020,
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SWP_SHOWWINDOW = 0x0040,
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SWP_HIDEWINDOW = 0x0080,
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SWP_NOCOPYBITS = 0x0100,
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SWP_NOOWNERZORDER = 0x0200,
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SWP_NOSENDCHANGING = 0x0400,
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}
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}
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