Changes necessary to compile gpu demos on linux. It is not functional yet jus...

gpu/demos/framework/window_win.cc

+// Copyright (c) 2010 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include "gpu/demos/framework/window.h"
+
+namespace {
+LRESULT CALLBACK WindowProc(HWND hwnd, UINT msg,
+                            WPARAM w_param, LPARAM l_param) {
+  LRESULT result = 0;
+  switch (msg) {
+    case WM_CLOSE:
+      ::DestroyWindow(hwnd);
+      break;
+    case WM_DESTROY:
+      ::PostQuitMessage(0);
+      break;
+    case WM_ERASEBKGND:
+      break;
+    case WM_PAINT: {
+      gpu::demos::Window* window = reinterpret_cast<gpu::demos::Window*>(
+          GetWindowLongPtr(hwnd, GWL_USERDATA));
+      if (window != NULL) window->OnPaint();
+      ::ValidateRect(hwnd, NULL);
+      break;
+    }
+    default:
+      result = ::DefWindowProc(hwnd, msg, w_param, l_param);
+      break;
+  }
+  return result;
+}
+}  // namespace.
+
+namespace gpu {
+namespace demos {
+
+void Window::MainLoop() {
+  // Set this to the GWL_USERDATA so that it is available to WindowProc.
+  SetWindowLongPtr(window_handle_, GWL_USERDATA,
+                   reinterpret_cast<LONG_PTR>(this));
+
+  MSG msg;
+  bool done = false;
+  while (!done) {
+    while (::PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
+      if (msg.message == WM_QUIT) done = true;
+      ::TranslateMessage(&msg);
+      ::DispatchMessage(&msg);
+    }
+    // Message queue is empty and application has not quit yet - keep painting.
+    if (!done) ::UpdateWindow(window_handle_);
+  }
+}
+
+gfx::NativeWindow Window::CreateNativeWindow(const wchar_t* title,
+                                             int width, int height) {
+  WNDCLASS wnd_class = {0};
+  HINSTANCE instance = GetModuleHandle(NULL);
+  wnd_class.style = CS_OWNDC;
+  wnd_class.lpfnWndProc = WindowProc;
+  wnd_class.hInstance = instance;
+  wnd_class.hbrBackground =
+      reinterpret_cast<HBRUSH>(GetStockObject(BLACK_BRUSH));
+  wnd_class.lpszClassName = L"gpu_demo";
+  if (!RegisterClass(&wnd_class)) return NULL;
+
+  DWORD wnd_style = WS_VISIBLE | WS_POPUP | WS_BORDER | WS_SYSMENU | WS_CAPTION;
+  RECT wnd_rect;
+  wnd_rect.left = 0;
+  wnd_rect.top = 0;
+  wnd_rect.right = width;
+  wnd_rect.bottom = height;
+  AdjustWindowRect(&wnd_rect, wnd_style, FALSE);
+
+  HWND hwnd = CreateWindow(
+      wnd_class.lpszClassName,
+      title,
+      wnd_style,
+      0,
+      0,
+      wnd_rect.right - wnd_rect.left,
+      wnd_rect.bottom - wnd_rect.top,
+      NULL,
+      NULL,
+      instance,
+      NULL);
+  if (hwnd == NULL) return NULL;
+
+  ShowWindow(hwnd, SW_SHOWNORMAL);
+  return hwnd;
+}
+
+gfx::PluginWindowHandle Window::PluginWindow(gfx::NativeWindow hwnd) {
+  return hwnd;
+}
+
+}  // namespace demos
+}  // namespace gpu
+