122 lines
4.7 KiB
C#
122 lines
4.7 KiB
C#
using System.Runtime.InteropServices;
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using Microsoft.UI;
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using Microsoft.UI.Xaml;
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using Microsoft.UI.Xaml.Media;
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using Windows.UI;
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using Windows.UI.ViewManagement;
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namespace Estara.Helpers;
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// Helper class to workaround custom title bar bugs.
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// DISCLAIMER: The resource key names and color values used below are subject to change. Do not depend on them.
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// https://github.com/microsoft/TemplateStudio/issues/4516
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internal class TitleBarHelper
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{
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private const int WAINACTIVE = 0x00;
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private const int WAACTIVE = 0x01;
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private const int WMACTIVATE = 0x0006;
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[DllImport("user32.dll")]
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private static extern IntPtr GetActiveWindow();
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[DllImport("user32.dll", CharSet = CharSet.Auto)]
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private static extern IntPtr SendMessage(IntPtr hWnd, int msg, int wParam, IntPtr lParam);
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public static void UpdateTitleBar(ElementTheme theme)
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{
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if (App.MainWindow.ExtendsContentIntoTitleBar)
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{
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if (theme == ElementTheme.Default)
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{
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var uiSettings = new UISettings();
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var background = uiSettings.GetColorValue(UIColorType.Background);
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theme = background == Colors.White ? ElementTheme.Light : ElementTheme.Dark;
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}
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if (theme == ElementTheme.Default)
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{
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theme = Application.Current.RequestedTheme == ApplicationTheme.Light ? ElementTheme.Light : ElementTheme.Dark;
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}
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Application.Current.Resources["WindowCaptionForeground"] = theme switch
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{
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ElementTheme.Dark => new SolidColorBrush(Colors.White),
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ElementTheme.Light => new SolidColorBrush(Colors.Black),
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_ => new SolidColorBrush(Colors.Transparent)
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};
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Application.Current.Resources["WindowCaptionForegroundDisabled"] = theme switch
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{
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ElementTheme.Dark => new SolidColorBrush(Color.FromArgb(0x66, 0xFF, 0xFF, 0xFF)),
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ElementTheme.Light => new SolidColorBrush(Color.FromArgb(0x66, 0x00, 0x00, 0x00)),
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_ => new SolidColorBrush(Colors.Transparent)
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};
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Application.Current.Resources["WindowCaptionButtonBackgroundPointerOver"] = theme switch
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{
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ElementTheme.Dark => new SolidColorBrush(Color.FromArgb(0x33, 0xFF, 0xFF, 0xFF)),
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ElementTheme.Light => new SolidColorBrush(Color.FromArgb(0x33, 0x00, 0x00, 0x00)),
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_ => new SolidColorBrush(Colors.Transparent)
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};
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Application.Current.Resources["WindowCaptionButtonBackgroundPressed"] = theme switch
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{
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ElementTheme.Dark => new SolidColorBrush(Color.FromArgb(0x66, 0xFF, 0xFF, 0xFF)),
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ElementTheme.Light => new SolidColorBrush(Color.FromArgb(0x66, 0x00, 0x00, 0x00)),
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_ => new SolidColorBrush(Colors.Transparent)
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};
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Application.Current.Resources["WindowCaptionButtonStrokePointerOver"] = theme switch
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{
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ElementTheme.Dark => new SolidColorBrush(Colors.White),
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ElementTheme.Light => new SolidColorBrush(Colors.Black),
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_ => new SolidColorBrush(Colors.Transparent)
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};
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Application.Current.Resources["WindowCaptionButtonStrokePressed"] = theme switch
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{
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ElementTheme.Dark => new SolidColorBrush(Colors.White),
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ElementTheme.Light => new SolidColorBrush(Colors.Black),
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_ => new SolidColorBrush(Colors.Transparent)
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};
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Application.Current.Resources["WindowCaptionBackground"] = new SolidColorBrush(Colors.Transparent);
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Application.Current.Resources["WindowCaptionBackgroundDisabled"] = new SolidColorBrush(Colors.Transparent);
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var hwnd = WinRT.Interop.WindowNative.GetWindowHandle(App.MainWindow);
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if (hwnd == GetActiveWindow())
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{
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SendMessage(hwnd, WMACTIVATE, WAINACTIVE, IntPtr.Zero);
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SendMessage(hwnd, WMACTIVATE, WAACTIVE, IntPtr.Zero);
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}
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else
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{
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SendMessage(hwnd, WMACTIVATE, WAACTIVE, IntPtr.Zero);
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SendMessage(hwnd, WMACTIVATE, WAINACTIVE, IntPtr.Zero);
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}
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}
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}
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public static void ApplySystemThemeToCaptionButtons()
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{
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var res = Application.Current.Resources;
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var frame = App.AppTitlebar as FrameworkElement;
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if (frame != null)
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{
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if (frame.ActualTheme == ElementTheme.Dark)
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{
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res["WindowCaptionForeground"] = Colors.White;
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}
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else
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{
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res["WindowCaptionForeground"] = Colors.Black;
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}
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UpdateTitleBar(frame.ActualTheme);
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}
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}
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}
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