internal static void SetBlur(IntPtr hwnd, AccentFlagsType style = AccentFlagsType.Window, AccentState?state = null)
{
var accent = new AccentPolicy();
var accentStructSize = Marshal.SizeOf(accent);
accent.AccentState = state ?? SelectAccentState();
if (style == AccentFlagsType.Window)
{
accent.AccentFlags = 2;
}
else
{
accent.AccentFlags = 0x20 | 0x40 | 0x80 | 0x100;
}
//accent.GradientColor = 0x99FFFFFF; // 60%の透明度が基本
accent.GradientColor = 0x00FFFFFF; // Tint Colorはここでは設定せず、Bindingで外部から変えられるようにXAML側のレイヤーとして定義
var accentPtr = Marshal.AllocHGlobal(accentStructSize);
Marshal.StructureToPtr(accent, accentPtr, false);
var data = new WindowCompositionAttributeData();
data.Attribute = WindowCompositionAttribute.WCA_ACCENT_POLICY;
data.SizeOfData = accentStructSize;
data.Data = accentPtr;
SetWindowCompositionAttribute(hwnd, ref data);
Marshal.FreeHGlobal(accentPtr);
}
internal static void SetBlur(Window win, AcrylicAccentState state, AccentFlagsType style = AccentFlagsType.Window)
{
var windowHelper = new WindowInteropHelper(win);
var value = AcrylicHelper.SelectAccentState(state);
AcrylicHelper.SetBlur(windowHelper.Handle, style, value);
}
internal static void EnableBlur(IntPtr hwnd, AccentFlagsType style = AccentFlagsType.Window)
{
var accent = new AccentPolicy();
var accentStructSize = Marshal.SizeOf(accent);
// ウィンドウ背景のぼかしを行うのはWindows10の場合のみ
// OSのバージョンに従い、AccentStateを切り替える
var currentVersion = SystemInfo.Version.Value;
if (currentVersion >= VersionInfos.Windows10_1903)
{
// Windows10 1903以降では、ACCENT_ENABLE_ACRYLICBLURBEHINDを用いると、ウィンドウのドラッグ移動などでマウス操作に追従しなくなる。
// SetWindowCompositionAttribute関数の動作が修正されるまで、ACCENT_ENABLE_ACRYLICBLURBEHINDは使用しない。
accent.AccentState = AccentState.ACCENT_ENABLE_BLURBEHIND;
}
else if (currentVersion >= VersionInfos.Windows10_1809)
{
accent.AccentState = AccentState.ACCENT_ENABLE_ACRYLICBLURBEHIND;
}
else if (currentVersion >= VersionInfos.Windows10)
{
accent.AccentState = AccentState.ACCENT_ENABLE_BLURBEHIND;
}
else
{
accent.AccentState = AccentState.ACCENT_ENABLE_TRANSPARENTGRADIENT;
}
if (style == AccentFlagsType.Window)
{
accent.AccentFlags = 2;
}
else
{
accent.AccentFlags = 0x20 | 0x40 | 0x80 | 0x100;
}
//accent.GradientColor = 0x99FFFFFF; // 60%の透明度が基本
accent.GradientColor = 0x00FFFFFF; // Tint Colorはここでは設定せず、Bindingで外部から変えられるようにXAML側のレイヤーとして定義
var accentPtr = Marshal.AllocHGlobal(accentStructSize);
Marshal.StructureToPtr(accent, accentPtr, false);
var data = new WindowCompositionAttributeData();
data.Attribute = WindowCompositionAttribute.WCA_ACCENT_POLICY;
data.SizeOfData = accentStructSize;
data.Data = accentPtr;
SetWindowCompositionAttribute(hwnd, ref data);
Marshal.FreeHGlobal(accentPtr);
}
/// <summary>
/// Enable blur effect in windows platform
/// </summary>
/// <param name="hwnd"></param>
/// <param name="style"></param>
/// <param name="state"></param>
/// <param name="accentColor"></param>
internal static void EnableBlur(IntPtr hwnd, uint accentColor = AccentColor, AccentFlagsType style = AccentFlagsType.Window, AccentState state = AccentState.ACCENT_DISABLED)
{
var accent = new AccentPolicy();
var accentStructSize = Marshal.SizeOf(accent);
accent.AccentState = state == AccentState.ACCENT_DISABLED ? CheckPlatformSupport(state) : state;
accent.AccentFlags = style == AccentFlagsType.Window ? 2 : 0x20 | 0x40 | 0x80 | 0x100;
accent.GradientColor = accentColor;
var accentPtr = Marshal.AllocHGlobal(accentStructSize);
Marshal.StructureToPtr(accent, accentPtr, false);
var data = new WindowCompositionAttributeData {
Attribute = WindowCompositionAttribute.WCA_ACCENT_POLICY,
SizeOfData = accentStructSize,
Data = accentPtr
};
_ = SetWindowCompositionAttribute(hwnd, ref data);
Marshal.FreeHGlobal(accentPtr);
}
