windows wrapper

example/windows/flutter/.template_version

@@ -1 +0,0 @@
-6

example/windows/runner/CMakeLists.txt

@@ -7,12 +7,12 @@ add_executable(${BINARY_NAME} WIN32
   "run_loop.cpp"
   "utils.cpp"
   "win32_window.cpp"
-  "window_configuration.cpp"
   "${FLUTTER_MANAGED_DIR}/generated_plugin_registrant.cc"
   "Runner.rc"
   "runner.exe.manifest"
 )
 apply_standard_settings(${BINARY_NAME})
+target_compile_definitions(${BINARY_NAME} PRIVATE "NOMINMAX")
 target_link_libraries(${BINARY_NAME} PRIVATE flutter flutter_wrapper_app)
 target_include_directories(${BINARY_NAME} PRIVATE "${CMAKE_SOURCE_DIR}")
 add_dependencies(${BINARY_NAME} flutter_assemble)

example/windows/runner/Runner.rc

@@ -54,6 +54,57 @@ END
 // remains consistent on all systems.
 IDI_APP_ICON            ICON                    "resources\\app_icon.ico"
 
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Version
+//
+
+#ifdef FLUTTER_BUILD_NUMBER
+#define VERSION_AS_NUMBER FLUTTER_BUILD_NUMBER
+#else
+#define VERSION_AS_NUMBER 1,0,0
+#endif
+
+#ifdef FLUTTER_BUILD_NAME
+#define VERSION_AS_STRING #FLUTTER_BUILD_NAME
+#else
+#define VERSION_AS_STRING "1.0.0"
+#endif
+
+VS_VERSION_INFO VERSIONINFO
+ FILEVERSION VERSION_AS_NUMBER
+ PRODUCTVERSION VERSION_AS_NUMBER
+ FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
+#ifdef _DEBUG
+ FILEFLAGS VS_FF_DEBUG
+#else
+ FILEFLAGS 0x0L
+#endif
+ FILEOS VOS__WINDOWS32
+ FILETYPE VFT_APP
+ FILESUBTYPE 0x0L
+BEGIN
+    BLOCK "StringFileInfo"
+    BEGIN
+        BLOCK "040904e4"
+        BEGIN
+            VALUE "CompanyName", "soko.ekibun" "\0"
+            VALUE "FileDescription", "A new Flutter project." "\0"
+            VALUE "FileVersion", VERSION_AS_STRING "\0"
+            VALUE "InternalName", "example" "\0"
+            VALUE "LegalCopyright", "Copyright (C) 2020 soko.ekibun. All rights reserved." "\0"
+            VALUE "OriginalFilename", "example.exe" "\0"
+            VALUE "ProductName", "example" "\0"
+            VALUE "ProductVersion", VERSION_AS_STRING "\0"
+        END
+    END
+    BLOCK "VarFileInfo"
+    BEGIN
+        VALUE "Translation", 0x409, 1252
+    END
+END
+
 #endif    // English (United States) resources
 /////////////////////////////////////////////////////////////////////////////
 

example/windows/runner/flutter_window.cpp

@@ -15,22 +15,25 @@ bool FlutterWindow::OnCreate() {
     return false;
   }
 
-  // The size here is arbitrary since SetChildContent will resize it.
-  flutter_controller_ =
-      std::make_unique<flutter::FlutterViewController>(100, 100, project_);
+  RECT frame = GetClientArea();
+
+  // The size here must match the window dimensions to avoid unnecessary surface
+  // creation / destruction in the startup path.
+  flutter_controller_ = std::make_unique<flutter::FlutterViewController>(
+      frame.right - frame.left, frame.bottom - frame.top, project_);
   // Ensure that basic setup of the controller was successful.
   if (!flutter_controller_->engine() || !flutter_controller_->view()) {
     return false;
   }
-  RegisterPlugins(flutter_controller_.get());
-  run_loop_->RegisterFlutterInstance(flutter_controller_.get());
+  RegisterPlugins(flutter_controller_->engine());
+  run_loop_->RegisterFlutterInstance(flutter_controller_->engine());
   SetChildContent(flutter_controller_->view()->GetNativeWindow());
   return true;
 }
 
 void FlutterWindow::OnDestroy() {
   if (flutter_controller_) {
-    run_loop_->UnregisterFlutterInstance(flutter_controller_.get());
+    run_loop_->UnregisterFlutterInstance(flutter_controller_->engine());
     flutter_controller_ = nullptr;
   }
 
@@ -50,5 +53,12 @@ FlutterWindow::MessageHandler(HWND hwnd, UINT const message,
       return *result;
     }
   }
+
+  switch (message) {
+    case WM_FONTCHANGE:
+      flutter_controller_->engine()->ReloadSystemFonts();
+      break;
+  }
+
   return Win32Window::MessageHandler(hwnd, message, wparam, lparam);
 }

example/windows/runner/flutter_window.h

@@ -1,5 +1,5 @@
-#ifndef FLUTTER_WINDOW_H_
-#define FLUTTER_WINDOW_H_
+#ifndef RUNNER_FLUTTER_WINDOW_H_
+#define RUNNER_FLUTTER_WINDOW_H_
 
 #include <flutter/dart_project.h>
 #include <flutter/flutter_view_controller.h>
@@ -36,4 +36,4 @@ class FlutterWindow : public Win32Window {
   std::unique_ptr<flutter::FlutterViewController> flutter_controller_;
 };
 
-#endif  // FLUTTER_WINDOW_H_
+#endif  // RUNNER_FLUTTER_WINDOW_H_

example/windows/runner/main.cpp

@@ -5,7 +5,6 @@
 #include "flutter_window.h"
 #include "run_loop.h"
 #include "utils.h"
-#include "window_configuration.h"
 
 int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,
                       _In_ wchar_t *command_line, _In_ int show_command) {
@@ -23,9 +22,9 @@ int APIENTRY wWinMain(_In_ HINSTANCE instance, _In_opt_ HINSTANCE prev,
 
   flutter::DartProject project(L"data");
   FlutterWindow window(&run_loop, project);
-  Win32Window::Point origin(kFlutterWindowOriginX, kFlutterWindowOriginY);
-  Win32Window::Size size(kFlutterWindowWidth, kFlutterWindowHeight);
-  if (!window.CreateAndShow(kFlutterWindowTitle, origin, size)) {
+  Win32Window::Point origin(10, 10);
+  Win32Window::Size size(1280, 720);
+  if (!window.CreateAndShow(L"example", origin, size)) {
     return EXIT_FAILURE;
   }
   window.SetQuitOnClose(true);

example/windows/runner/run_loop.cpp

@@ -1,9 +1,6 @@
 #include "run_loop.h"
 
-#include <Windows.h>
-// Don't stomp std::min/std::max
-#undef max
-#undef min
+#include <windows.h>
 
 #include <algorithm>
 
@@ -47,20 +44,19 @@ void RunLoop::Run() {
 }
 
 void RunLoop::RegisterFlutterInstance(
-    flutter::FlutterViewController* flutter_instance) {
+    flutter::FlutterEngine* flutter_instance) {
   flutter_instances_.insert(flutter_instance);
 }
 
 void RunLoop::UnregisterFlutterInstance(
-    flutter::FlutterViewController* flutter_instance) {
+    flutter::FlutterEngine* flutter_instance) {
   flutter_instances_.erase(flutter_instance);
 }
 
 RunLoop::TimePoint RunLoop::ProcessFlutterMessages() {
   TimePoint next_event_time = TimePoint::max();
-  for (auto flutter_controller : flutter_instances_) {
-    std::chrono::nanoseconds wait_duration =
-        flutter_controller->ProcessMessages();
+  for (auto instance : flutter_instances_) {
+    std::chrono::nanoseconds wait_duration = instance->ProcessMessages();
     if (wait_duration != std::chrono::nanoseconds::max()) {
       next_event_time =
           std::min(next_event_time, TimePoint::clock::now() + wait_duration);

example/windows/runner/run_loop.h

@@ -1,7 +1,7 @@
-#ifndef RUN_LOOP_H_
-#define RUN_LOOP_H_
+#ifndef RUNNER_RUN_LOOP_H_
+#define RUNNER_RUN_LOOP_H_
 
-#include <flutter/flutter_view_controller.h>
+#include <flutter/flutter_engine.h>
 
 #include <chrono>
 #include <set>
@@ -22,11 +22,11 @@ class RunLoop {
 
   // Registers the given Flutter instance for event servicing.
   void RegisterFlutterInstance(
-      flutter::FlutterViewController* flutter_instance);
+      flutter::FlutterEngine* flutter_instance);
 
   // Unregisters the given Flutter instance from event servicing.
   void UnregisterFlutterInstance(
-      flutter::FlutterViewController* flutter_instance);
+      flutter::FlutterEngine* flutter_instance);
 
  private:
   using TimePoint = std::chrono::steady_clock::time_point;
@@ -34,7 +34,7 @@ class RunLoop {
   // Processes all currently pending messages for registered Flutter instances.
   TimePoint ProcessFlutterMessages();
 
-  std::set<flutter::FlutterViewController*> flutter_instances_;
+  std::set<flutter::FlutterEngine*> flutter_instances_;
 };
 
-#endif  // RUN_LOOP_H_
+#endif  // RUNNER_RUN_LOOP_H_

example/windows/runner/utils.h

@@ -1,8 +1,8 @@
-#ifndef CONSOLE_UTILS_H_
-#define CONSOLE_UTILS_H_
+#ifndef RUNNER_UTILS_H_
+#define RUNNER_UTILS_H_
 
 // Creates a console for the process, and redirects stdout and stderr to
 // it for both the runner and the Flutter library.
 void CreateAndAttachConsole();
 
-#endif  // CONSOLE_UTILS_H_
+#endif  // RUNNER_UTILS_H_

example/windows/runner/win32_window.cpp

@@ -174,8 +174,7 @@ Win32Window::MessageHandler(HWND hwnd,
       return 0;
     }
     case WM_SIZE:
-      RECT rect;
-      GetClientRect(hwnd, &rect);
+      RECT rect = GetClientArea();
       if (child_content_ != nullptr) {
         // Size and position the child window.
         MoveWindow(child_content_, rect.left, rect.top, rect.right - rect.left,
@@ -188,11 +187,6 @@ Win32Window::MessageHandler(HWND hwnd,
         SetFocus(child_content_);
       }
       return 0;
-
-    // Messages that are directly forwarded to embedding.
-    case WM_FONTCHANGE:
-      SendMessage(child_content_, WM_FONTCHANGE, NULL, NULL);
-      return 0;
   }
 
   return DefWindowProc(window_handle_, message, wparam, lparam);
@@ -218,8 +212,7 @@ Win32Window* Win32Window::GetThisFromHandle(HWND const window) noexcept {
 void Win32Window::SetChildContent(HWND content) {
   child_content_ = content;
   SetParent(content, window_handle_);
-  RECT frame;
-  GetClientRect(window_handle_, &frame);
+  RECT frame = GetClientArea();
 
   MoveWindow(content, frame.left, frame.top, frame.right - frame.left,
              frame.bottom - frame.top, true);
@@ -227,6 +220,12 @@ void Win32Window::SetChildContent(HWND content) {
   SetFocus(child_content_);
 }
 
+RECT Win32Window::GetClientArea() {
+  RECT frame;
+  GetClientRect(window_handle_, &frame);
+  return frame;
+}
+
 HWND Win32Window::GetHandle() {
   return window_handle_;
 }

example/windows/runner/win32_window.h

@@ -1,8 +1,7 @@
-#ifndef WIN32_WINDOW_H_
-#define WIN32_WINDOW_H_
+#ifndef RUNNER_WIN32_WINDOW_H_
+#define RUNNER_WIN32_WINDOW_H_
 
-#include <Windows.h>
-#include <Windowsx.h>
+#include <windows.h>
 
 #include <functional>
 #include <memory>
@@ -52,6 +51,9 @@ class Win32Window {
   // If true, closing this window will quit the application.
   void SetQuitOnClose(bool quit_on_close);
 
+  // Return a RECT representing the bounds of the current client area.
+  RECT GetClientArea();
+
  protected:
   // Processes and route salient window messages for mouse handling,
   // size change and DPI. Delegates handling of these to member overloads that
@@ -93,4 +95,4 @@ class Win32Window {
   HWND child_content_ = nullptr;
 };
 
-#endif  // WIN32_WINDOW_H_
+#endif  // RUNNER_WIN32_WINDOW_H_

example/windows/runner/window_configuration.cpp

@@ -1,7 +0,0 @@
-#include "window_configuration.h"
-
-const wchar_t* kFlutterWindowTitle = L"example";
-const unsigned int kFlutterWindowOriginX = 10;
-const unsigned int kFlutterWindowOriginY = 10;
-const unsigned int kFlutterWindowWidth = 1280;
-const unsigned int kFlutterWindowHeight = 720;

example/windows/runner/window_configuration.h

@@ -1,18 +0,0 @@
-#ifndef WINDOW_CONFIGURATION_
-#define WINDOW_CONFIGURATION_
-
-// This is a temporary approach to isolate changes that people are likely to
-// make to main.cpp, where the APIs are still in flux. This will reduce the
-// need to resolve conflicts or re-create changes slightly differently every
-// time the Windows Flutter API surface changes.
-//
-// Longer term there should be simpler configuration options for common
-// customizations like this, without requiring native code changes.
-
-extern const wchar_t* kFlutterWindowTitle;
-extern const unsigned int kFlutterWindowOriginX;
-extern const unsigned int kFlutterWindowOriginY;
-extern const unsigned int kFlutterWindowWidth;
-extern const unsigned int kFlutterWindowHeight;
-
-#endif  // WINDOW_CONFIGURATION_