Add window support for Windows.

src/windows/ui_interfaces/win32/Win32Window.cpp

@@ -0,0 +1,139 @@
+#include "Win32Window.h"
+
+#include "Win32WindowInterface.h"
+
+#include <WinUser.h>
+#include "FileLogger.h"
+#include "StringUtils.h"
+
+#include "ui_events\KeyboardEvent.h"
+#include "DesktopManager.h"
+
+LRESULT CALLBACK FreeWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
+
+Win32Window::Win32Window()
+{
+
+}
+
+std::unique_ptr<Win32Window> Win32Window::Create()
+{
+    return std::make_unique<Win32Window>();
+}
+
+HWND Win32Window::GetHandle() const
+{
+    return mHandle;
+}
+
+void Win32Window::CreateNative(Win32ApplicationContext* context, DesktopManager* desktopManager)
+{
+    mDesktopManager = desktopManager;
+
+    const char CLASS_NAME[] = "Sample Window Class";
+
+    auto hInstance = reinterpret_cast<HINSTANCE>(context->hInstance);
+    WNDCLASS wc = { };
+    wc.lpfnWndProc = FreeWindowProc;
+    wc.hInstance = hInstance;
+    wc.lpszClassName = CLASS_NAME;
+
+    RegisterClass(&wc);
+
+    MLOG_INFO("Request window create");
+    mHandle = CreateWindowEx(
+        0,                              // Optional window styles.
+        CLASS_NAME,                     // Window class
+        "Media Tool",    // Window text
+        WS_OVERLAPPEDWINDOW,            // Window style
+
+        // Size and position
+        CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
+
+        nullptr,       // Parent window    
+        nullptr,       // Menu
+        hInstance,  // Instance handle
+        this        // Additional application data
+    );
+
+    if (mHandle == nullptr)
+    {
+        LPVOID lpMsgBuf;
+        auto dw = ::GetLastError();
+
+        ::FormatMessage(
+            FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+            nullptr, dw,MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), (LPTSTR)&lpMsgBuf, 0, NULL);
+
+        MLOG_INFO("Request window failed: " << dw);
+
+        LocalFree(lpMsgBuf);
+    }
+    MLOG_INFO("Request window create got handle: " << "0x" << mHandle);
+}
+
+LRESULT CALLBACK Win32Window::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)
+{
+    switch (message)
+    {
+        case WM_DESTROY:
+        {
+            PostQuitMessage(0);
+            return 0;
+        }
+
+        case WM_CHAR:
+        {
+            auto key_event = std::make_unique<KeyboardEvent>();
+            key_event->SetAction(KeyboardEvent::Action::Pressed);
+
+            auto keyChar = (wchar_t)wParam;
+            key_event->SetKeyString(StringUtils::convert(std::wstring(1, keyChar)));
+            mDesktopManager->OnUiEvent(std::move(key_event));
+        }
+
+        case WM_PAINT:
+        {
+            PAINTSTRUCT ps;
+            HDC hdc = BeginPaint(mHandle, &ps);
+
+            FillRect(hdc, &ps.rcPaint, (HBRUSH)(COLOR_WINDOW + 1));
+
+            auto text = L"Hello World";
+            auto val = DrawText(hdc, (LPCSTR)(&text[0]), -1, &ps.rcPaint, 0);
+
+            EndPaint(mHandle, &ps);
+        }
+    }
+    return DefWindowProc(mHandle, message, wParam, lParam);
+}
+
+static LRESULT CALLBACK FreeWindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)
+{
+    Win32Window* window;
+
+    if (uMsg == WM_NCCREATE)
+    {
+        CREATESTRUCT* cs = (CREATESTRUCT*)lParam;
+        window = (Win32Window*)cs->lpCreateParams;
+
+        SetLastError(0);
+        if (::SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)window) == 0)
+        {
+            if (GetLastError() != 0)
+                return FALSE;
+        }
+    }
+    else
+    {
+        window = (Win32Window*)GetWindowLongPtr(hwnd, GWLP_USERDATA);
+    }
+
+    if (window)
+    {
+        window->SetHandle(hwnd);
+        return window->WindowProc(uMsg, wParam, lParam);
+    }
+
+    return DefWindowProc(hwnd, uMsg, wParam, lParam);
+}