refactor Windows classes to separate EGL/WGL/Backing Window

windows/utils.cc

@@ -0,0 +1,130 @@
+// This file is a part of flutter_native_view
+// (https://github.com/alexmercerind/flutter_native_view).
+//
+// Copyright (c) 2022, Hitesh Kumar Saini <saini123hitesh@gmail.com>.
+// All rights reserved.
+// Use of this source code is governed by MIT license that can be found in the
+// LICENSE file.
+
+#include "utils.h"
+#include <iostream>
+
+#pragma comment(lib, "dwmapi.lib")
+#pragma comment(lib, "comctl32.lib")
+
+namespace flutternativeview {
+
+typedef enum _WINDOWCOMPOSITIONATTRIB {
+  WCA_UNDEFINED = 0,
+  WCA_NCRENDERING_ENABLED = 1,
+  WCA_NCRENDERING_POLICY = 2,
+  WCA_TRANSITIONS_FORCEDISABLED = 3,
+  WCA_ALLOW_NCPAINT = 4,
+  WCA_CAPTION_BUTTON_BOUNDS = 5,
+  WCA_NONCLIENT_RTL_LAYOUT = 6,
+  WCA_FORCE_ICONIC_REPRESENTATION = 7,
+  WCA_EXTENDED_FRAME_BOUNDS = 8,
+  WCA_HAS_ICONIC_BITMAP = 9,
+  WCA_THEME_ATTRIBUTES = 10,
+  WCA_NCRENDERING_EXILED = 11,
+  WCA_NCADORNMENTINFO = 12,
+  WCA_EXCLUDED_FROM_LIVEPREVIEW = 13,
+  WCA_VIDEO_OVERLAY_ACTIVE = 14,
+  WCA_FORCE_ACTIVEWINDOW_APPEARANCE = 15,
+  WCA_DISALLOW_PEEK = 16,
+  WCA_CLOAK = 17,
+  WCA_CLOAKED = 18,
+  WCA_ACCENT_POLICY = 19,
+  WCA_FREEZE_REPRESENTATION = 20,
+  WCA_EVER_UNCLOAKED = 21,
+  WCA_VISUAL_OWNER = 22,
+  WCA_HOLOGRAPHIC = 23,
+  WCA_EXCLUDED_FROM_DDA = 24,
+  WCA_PASSIVEUPDATEMODE = 25,
+  WCA_USEDARKMODECOLORS = 26,
+  WCA_LAST = 27
+} WINDOWCOMPOSITIONATTRIB;
+
+typedef struct _WINDOWCOMPOSITIONATTRIBDATA {
+  WINDOWCOMPOSITIONATTRIB Attrib;
+  PVOID pvData;
+  SIZE_T cbData;
+} WINDOWCOMPOSITIONATTRIBDATA;
+
+typedef enum _ACCENT_STATE {
+  ACCENT_DISABLED = 0,
+  ACCENT_ENABLE_GRADIENT = 1,
+  ACCENT_ENABLE_TRANSPARENTGRADIENT = 2,
+  ACCENT_ENABLE_BLURBEHIND = 3,
+  ACCENT_ENABLE_ACRYLICBLURBEHIND = 4,
+  ACCENT_ENABLE_HOSTBACKDROP = 5,
+  ACCENT_INVALID_STATE = 6
+} ACCENT_STATE;
+
+typedef struct _ACCENT_POLICY {
+  ACCENT_STATE AccentState;
+  DWORD AccentFlags;
+  DWORD GradientColor;
+  DWORD AnimationId;
+} ACCENT_POLICY;
+
+typedef BOOL(WINAPI* _GetWindowCompositionAttribute)(
+    HWND, WINDOWCOMPOSITIONATTRIBDATA*);
+typedef BOOL(WINAPI* _SetWindowCompositionAttribute)(
+    HWND, WINDOWCOMPOSITIONATTRIBDATA*);
+
+static _SetWindowCompositionAttribute g_set_window_composition_attribute = NULL;
+static bool g_set_window_composition_attribute_initialized = false;
+
+typedef LONG NTSTATUS, *PNTSTATUS;
+#define STATUS_SUCCESS (0x00000000)
+
+typedef NTSTATUS(WINAPI* RtlGetVersionPtr)(PRTL_OSVERSIONINFOW);
+
+RTL_OSVERSIONINFOW GetWindowsVersion() {
+  HMODULE hmodule = ::GetModuleHandleW(L"ntdll.dll");
+  if (hmodule) {
+    RtlGetVersionPtr rtl_get_version_ptr =
+        (RtlGetVersionPtr)::GetProcAddress(hmodule, "RtlGetVersion");
+    if (rtl_get_version_ptr != nullptr) {
+      RTL_OSVERSIONINFOW rovi = {0};
+      rovi.dwOSVersionInfoSize = sizeof(rovi);
+      if (STATUS_SUCCESS == rtl_get_version_ptr(&rovi)) {
+        return rovi;
+      }
+    }
+  }
+  RTL_OSVERSIONINFOW rovi = {0};
+  return rovi;
+}
+
+void SetWindowComposition(HWND window, int32_t accent_state,
+                          int32_t gradient_color) {
+  // TODO: Look for a better available API.
+  if (GetWindowsVersion().dwBuildNumber >= 18362) {
+    std::cout << "got win ver" << std::endl;
+    if (!g_set_window_composition_attribute_initialized) {
+      std::cout << "not init" << std::endl;
+      auto user32 = ::GetModuleHandleA("user32.dll");
+      if (user32) {
+        std::cout << "user32" << std::endl;
+        g_set_window_composition_attribute =
+            reinterpret_cast<_SetWindowCompositionAttribute>(
+                ::GetProcAddress(user32, "SetWindowCompositionAttribute"));
+        if (g_set_window_composition_attribute) {
+          std::cout << "set" << std::endl;
+          g_set_window_composition_attribute_initialized = true;
+        }
+      }
+    }
+    ACCENT_POLICY accent = {static_cast<ACCENT_STATE>(accent_state), 2,
+                            static_cast<DWORD>(gradient_color), 0};
+    WINDOWCOMPOSITIONATTRIBDATA data;
+    data.Attrib = WCA_ACCENT_POLICY;
+    data.pvData = &accent;
+    data.cbData = sizeof(accent);
+    g_set_window_composition_attribute(window, &data);
+  }
+}
+
+}  // namespace flutternativeview