Use CMake configuration to detect ATL support (issue #1328).

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@1888 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

CMakeLists.txt.in

@@ -480,6 +480,22 @@ if(OS_WINDOWS)
     set(CEF_SANDBOX_LIB_DEBUG "${CEF_BINARY_DIR_DEBUG}/cef_sandbox.lib")
     set(CEF_SANDBOX_LIB_RELEASE "${CEF_BINARY_DIR_RELEASE}/cef_sandbox.lib")
   endif()
+
+  # Configure use of ATL.
+  option(USE_ATL "Enable or disable use of ATL." ON)
+  if(USE_ATL)
+    # Determine if the Visual Studio install supports ATL.
+    get_filename_component(VC_BIN_DIR ${CMAKE_CXX_COMPILER} DIRECTORY)
+    get_filename_component(VC_DIR ${VC_BIN_DIR} DIRECTORY)
+    if(NOT IS_DIRECTORY "${VC_DIR}/atlmfc")
+      set(USE_ATL OFF)
+    endif()
+  endif()
+
+  if(USE_ATL)
+    # Definition used by apps to test if ATL support is enabled.
+    add_definitions(-DCEF_USE_ATL)
+  endif()
 endif()
 
 
@@ -531,6 +547,7 @@ endif()
 
 if(OS_WINDOWS)
   message(STATUS "CEF Windows sandbox:          ${USE_SANDBOX}")
+  message(STATUS "Visual Studio ATL support:    ${USE_ATL}")
 endif()
 
 set(LIBRARIES ${CEF_STANDARD_LIBS})

tests/cefclient/cefclient_osr_dragdrop_win.cpp

@@ -4,6 +4,8 @@
 
 #include "cefclient/cefclient_osr_dragdrop_win.h"
 
+#if defined(CEF_USE_ATL)
+
 #include <shellapi.h>
 #include <shlobj.h>
 #include <windowsx.h>
@@ -646,3 +648,5 @@ DataObjectWin::DataObjectWin(FORMATETC* fmtetc, STGMEDIUM* stgmed, int count)
     m_pStgMedium[i] = stgmed[i];
   }
 }
+
+#endif  // defined(CEF_USE_ATL)

tests/cefclient/cefclient_osr_dragdrop_win.h

@@ -6,6 +6,14 @@
 #define CEF_TESTS_CEFCLIENT_CEFCLIENT_OSR_DRAGDROP_WIN_H_
 #pragma once
 
+// When generating projects with CMake the CEF_USE_ATL value will be defined
+// automatically if using a supported Visual Studio version. Pass -DUSE_ATL=OFF
+// to the CMake command-line to disable use of ATL.
+// Uncomment this line to manually enable ATL support.
+// #define CEF_USE_ATL 1
+
+#if defined(CEF_USE_ATL)
+
 #include <atlcomcli.h>
 #include <objidl.h>
 #include <stdio.h>
@@ -175,4 +183,6 @@ class DataObjectWin : public IDataObject {
   explicit DataObjectWin(FORMATETC *fmtetc, STGMEDIUM *stgmed, int count);
 };
 
+#endif  // defined(CEF_USE_ATL)
+
 #endif  // CEF_TESTS_CEFCLIENT_CEFCLIENT_OSR_DRAGDROP_WIN_H_

tests/cefclient/cefclient_osr_widget_win.cpp

@@ -44,9 +44,12 @@ bool OSRWindow::CreateWidget(HWND hWndParent, const RECT& rect,
   // Reference released in OnDestroyed().
   AddRef();
 
+#if defined(CEF_USE_ATL)
   drop_target_ = DropTargetWin::Create(this, hWnd_);
   HRESULT register_res = RegisterDragDrop(hWnd_, drop_target_);
   DCHECK_EQ(register_res, S_OK);
+#endif
+
   return true;
 }
 
@@ -56,8 +59,11 @@ void OSRWindow::DestroyWidget() {
 }
 
 void OSRWindow::OnBeforeClose(CefRefPtr<CefBrowser> browser) {
+#if defined(CEF_USE_ATL)
   RevokeDragDrop(hWnd_);
   drop_target_ = NULL;
+#endif
+
   DisableGL();
   ::DestroyWindow(hWnd_);
 }
@@ -155,6 +161,7 @@ bool OSRWindow::StartDragging(CefRefPtr<CefBrowser> browser,
                                CefRefPtr<CefDragData> drag_data,
                                CefRenderHandler::DragOperationsMask allowed_ops,
                                int x, int y) {
+#if defined(CEF_USE_ATL)
   if (!drop_target_)
     return false;
   current_drag_op_ = DRAG_OPERATION_NONE;
@@ -167,11 +174,17 @@ bool OSRWindow::StartDragging(CefRefPtr<CefBrowser> browser,
   browser->GetHost()->DragSourceEndedAt(pt.x, pt.y, result);
   browser->GetHost()->DragSourceSystemDragEnded();
   return true;
+#else
+  // Cancel the drag. The dragging implementation requires ATL support.
+  return false;
+#endif
 }
 
 void OSRWindow::UpdateDragCursor(CefRefPtr<CefBrowser> browser,
                                  CefRenderHandler::DragOperation operation) {
+#if defined(CEF_USE_ATL)
   current_drag_op_ = operation;
+#endif
 }
 
 void OSRWindow::Invalidate() {
@@ -202,6 +215,8 @@ void OSRWindow::WasHidden(bool hidden) {
   hidden_ = hidden;
 }
 
+#if defined(CEF_USE_ATL)
+
 CefBrowserHost::DragOperationsMask
     OSRWindow::OnDragEnter(CefRefPtr<CefDragData> drag_data,
                            CefMouseEvent ev,
@@ -230,13 +245,17 @@ CefBrowserHost::DragOperationsMask
   return current_drag_op_;
 }
 
+#endif  // defined(CEF_USE_ATL)
+
 OSRWindow::OSRWindow(OSRBrowserProvider* browser_provider, bool transparent)
     : renderer_(transparent),
       browser_provider_(browser_provider),
       hWnd_(NULL),
       hDC_(NULL),
       hRC_(NULL),
+#if defined(CEF_USE_ATL)
       current_drag_op_(DRAG_OPERATION_NONE),
+#endif
       painting_popup_(false),
       render_task_pending_(false),
       hidden_(false) {

tests/cefclient/cefclient_osr_widget_win.h

@@ -19,8 +19,11 @@ class OSRBrowserProvider {
   virtual ~OSRBrowserProvider() {}
 };
 
-class OSRWindow : public ClientHandler::RenderHandler,
-                  public DragEvents {
+class OSRWindow : public ClientHandler::RenderHandler
+#if defined(CEF_USE_ATL)
+                  , public DragEvents
+#endif
+{
  public:
   // Create a new OSRWindow instance. |browser_provider| must outlive this
   // object.
@@ -75,6 +78,7 @@ class OSRWindow : public ClientHandler::RenderHandler,
       CefRefPtr<CefBrowser> browser,
       CefRenderHandler::DragOperation operation) OVERRIDE;
 
+#if defined(CEF_USE_ATL)
   // DragEvents methods
   virtual CefBrowserHost::DragOperationsMask OnDragEnter(
       CefRefPtr<CefDragData> drag_data,
@@ -85,6 +89,7 @@ class OSRWindow : public ClientHandler::RenderHandler,
   virtual void OnDragLeave() OVERRIDE;
   virtual CefBrowserHost::DragOperationsMask OnDrop(CefMouseEvent ev,
       CefBrowserHost::DragOperationsMask effect) OVERRIDE;
+#endif  // defined(CEF_USE_ATL)
 
   void Invalidate();
   void WasHidden(bool hidden);
@@ -115,8 +120,10 @@ class OSRWindow : public ClientHandler::RenderHandler,
   HDC hDC_;
   HGLRC hRC_;
 
+#if defined(CEF_USE_ATL)
   CComPtr<DropTargetWin> drop_target_;
   CefRenderHandler::DragOperation current_drag_op_;
+#endif
 
   bool painting_popup_;
   bool render_task_pending_;