Windows: Add off-screen rendering support (issue #518).

- Popup menus, drag&drop and GPU acceleration are not currently supported.
- Testing is enabled in cefclient by passing the "off-screen-rendering-enabled" command-line flag.

git-svn-id: https://chromiumembedded.googlecode.com/svn/trunk@919 5089003a-bbd8-11dd-ad1f-f1f9622dbc98

include/internal/cef_types.h

@@ -961,6 +961,23 @@ enum cef_menu_id_t {
   MENU_ID_USER_LAST           = 28500,
 };
 
+///
+// Mouse button types.
+///
+enum cef_mouse_button_type_t {
+  MBT_LEFT   = 0,
+  MBT_MIDDLE,
+  MBT_RIGHT,
+};
+
+///
+// Paint element types.
+///
+enum cef_paint_element_type_t {
+  PET_VIEW  = 0,
+  PET_POPUP,
+};
+
 ///
 // Supported event bit flags.
 ///

include/internal/cef_types_linux.h

@@ -43,7 +43,7 @@ extern "C" {
 #endif
 
 // Handle types.
-#define cef_cursor_handle_t GtkCursor*
+#define cef_cursor_handle_t void*
 #define cef_event_handle_t GdkEvent*
 #define cef_window_handle_t GtkWidget*
 

include/internal/cef_types_win.h

@@ -69,6 +69,12 @@ typedef struct _cef_window_info_t {
   cef_window_handle_t parent_window;
   HMENU menu;
 
+  // If window rendering is disabled no browser window will be created. Set
+  // |parent_window| to be used for identifying monitor info
+  // (MonitorFromWindow). If |parent_window| is not provided the main screen
+  // monitor will be used.
+  BOOL window_rendering_disabled;
+
   // Set to true to enable transparent painting.
   BOOL transparent_painting;
 

include/internal/cef_win.h

@@ -120,6 +120,7 @@ struct CefWindowInfoTraits {
     target->menu = src->menu;
     target->window = src->window;
     target->transparent_painting = src->transparent_painting;
+    target->window_rendering_disabled = src->window_rendering_disabled;
   }
 };
 
@@ -159,6 +160,11 @@ class CefWindowInfo : public CefStructBase<CefWindowInfoTraits> {
   void SetTransparentPainting(BOOL transparentPainting) {
     transparent_painting = transparentPainting;
   }
+
+  void SetAsOffScreen(HWND hWndParent) {
+    window_rendering_disabled = TRUE;
+    parent_window = hWndParent;
+  }
 };
 
 #endif  // OS_WIN