Add SetWindowAttribute bindings

src/modules/tt-windows-utils/binding.gyp

@@ -20,6 +20,16 @@
       ],
       'defines': [ 'NAPI_DISABLE_CPP_EXCEPTIONS' ],
     },
+    {
+      "target_name": "windows_window_material",
+      "cflags!": [ "-fno-exceptions" ],
+      "cflags_cc!": [ "-fno-exceptions" ],
+      "sources": [ "windows_window_material.cc" ],
+      "include_dirs": [
+        "<!@(node -p \"require('node-addon-api').include\")"
+      ],
+      'defines': [ 'NAPI_DISABLE_CPP_EXCEPTIONS' ],
+    },
     {
       "target_name": "windows_media_status",
       "cflags!": [ "-fno-exceptions" ],

src/modules/tt-windows-utils/index.js

@@ -2,6 +2,7 @@
 const WindowUtils = require("bindings")("windows_window_utils");
 const PowerEvents = require("bindings")("windows_power_events");
 const MediaStatus = require("bindings")("windows_media_status");
+const WindowMaterial = require("bindings")("windows_window_material");
 
 module.exports = {
     WindowUtils: {
@@ -21,5 +22,20 @@ module.exports = {
     MediaStatus: {
         getPlaybackStatus: MediaStatus.getPlaybackStatus,
         getPlaybackInfo: MediaStatus.getPlaybackInfo
+    },
+    WindowMaterial: {
+        setWindowMaterial: (hwnd, materialType = 1, cornersType = 2, darkModeSupported = true) => {
+            WindowMaterial.setWindowMaterial(hwnd, materialType, cornersType, (darkModeSupported ? 1 : 0))
+        },
+        setWindowAttribute: WindowMaterial.setWindowAttribute,
+        setWindowCorners: (hwnd, cornerType = 0) => {
+            WindowMaterial.setWindowAttribute(hwnd, 33, cornerType)
+        },
+        setDarkModeSupported: (hwnd, enabled = 1) => {
+            WindowMaterial.setWindowAttribute(hwnd, 20, enabled)
+        },
+        setTransitionSupported: (hwnd, enabled = 1) => {
+            WindowMaterial.setWindowAttribute(hwnd, 3, enabled)
+        }
     }
 }

src/modules/tt-windows-utils/windows_window_material.cc

@@ -0,0 +1,35 @@
+#include <napi.h>
+#include <windows.h>
+#include <dwmapi.h>
+#pragma comment(lib, "dwmapi.lib")
+
+Napi::Boolean SetWindowMaterial(const Napi::CallbackInfo &info) {
+  Napi::Number hwnd = info[0].As<Napi::Number>();
+  Napi::Number backdrop = info[1].As<Napi::Number>();
+  Napi::Number corners = info[2].As<Napi::Number>();
+  Napi::Number mode = info[3].As<Napi::Number>();
+  int backdropType = backdrop.Int32Value();
+  int darkMode = mode.Int32Value();
+  int borderType = corners.Int32Value();
+  DwmSetWindowAttribute((HWND) hwnd.Int32Value(), 20, &darkMode, sizeof(darkMode)); // DWMWA_USE_IMMERSIVE_DARK_MODE: 20
+  DwmSetWindowAttribute((HWND) hwnd.Int32Value(), 38, &backdropType, sizeof(backdropType)); // DWMWA_SYSTEMBACKDROP_TYPE: 38 
+  DwmSetWindowAttribute((HWND) hwnd.Int32Value(), 33, &borderType, sizeof(borderType)); // DWMWA_WINDOW_CORNER_PREFERENCE: 33
+  return Napi::Boolean::New(info.Env(), true);
+}
+
+Napi::Boolean SetWindowAttribute(const Napi::CallbackInfo &info) {
+  Napi::Number hwnd = info[0].As<Napi::Number>();
+  Napi::Number type = info[1].As<Napi::Number>();
+  Napi::Number value = info[2].As<Napi::Number>();
+  int intval = value.Int32Value();
+  DwmSetWindowAttribute((HWND) hwnd.Int32Value(), (DWORD) type.Int32Value(), &intval, sizeof(intval));
+  return Napi::Boolean::New(info.Env(), true);
+}
+
+Napi::Object Init(Napi::Env env, Napi::Object exports) {
+  exports.Set(Napi::String::New(env, "setWindowMaterial"), Napi::Function::New(env, SetWindowMaterial));
+  exports.Set(Napi::String::New(env, "setWindowAttribute"), Napi::Function::New(env, SetWindowAttribute));
+  return exports;
+}
+
+NODE_API_MODULE(NODE_GYP_MODULE_NAME, Init);