LOK: custom themes: isolate LO internals headers from theme plugin

Change-Id: Ic189aecf092b9cffd800e410d2d6e88016c43052

solenv/clang-format/blacklist

@@ -17801,6 +17801,7 @@ vcl/inc/unx/x11_cursors/wsshow_curs.h
 vcl/inc/unx/x11_cursors/wsshow_mask.h
 vcl/inc/vcleventlisteners.hxx
 vcl/inc/vclpluginapi.h
+vcl/inc/WidgetThemeLibraryTypes.hxx
 vcl/inc/wall2.hxx
 vcl/inc/win/DWriteTextRenderer.hxx
 vcl/inc/win/ScopedHDC.hxx

vcl/headless/CustomWidgetDraw.cxx

@@ -8,14 +8,13 @@
  *
  */
 
+#include <cairo.h>
 #include <headless/CustomWidgetDraw.hxx>
-#include <vcl/salnativewidgets.hxx>
 #include <sal/main.h>
 #include <sal/config.h>
 #include <rtl/bootstrap.hxx>
 #include <tools/svlibrary.h>
 #include <osl/module.hxx>
-#include <cairo.h>
 #include <svdata.hxx>
 
 namespace vcl

vcl/inc/WidgetThemeLibrary.hxx

@@ -11,10 +11,11 @@
 #ifndef INCLUDED_VCL_INC_WIDGETTHEME_HXX
 #define INCLUDED_VCL_INC_WIDGETTHEME_HXX
 
-#include <cairo.h>
-#include <vcl/dllapi.h>
-#include <vcl/salnativewidgets.hxx>
-#include <tools/color.hxx>
+/**
+ * This file expects cairo.h and the definition of
+ * the other types used here to be defined before
+ * including it.
+ */
 
 namespace vcl
 {
@@ -52,9 +53,13 @@ struct ControlDrawParameters
     ControlState eState;
     ButtonValue eButtonValue;
     bool bIsStock;
-    sal_Int64 nValue;
+    int64_t nValue;
 };
 
+#ifndef SAL_DLLPUBLIC_RTTI
+#define SAL_DLLPUBLIC_RTTI
+#endif
+
 class SAL_DLLPUBLIC_RTTI WidgetThemeLibrary
 {
 public:

vcl/inc/headless/CustomWidgetDraw.hxx

@@ -12,7 +12,6 @@
 #define INCLUDED_VCL_INC_CUSTOMWIDGETDRAW_HXX
 
 #include <vcl/dllapi.h>
-#include <vcl/salnativewidgets.hxx>
 #include <WidgetDrawInterface.hxx>
 #include <WidgetThemeLibrary.hxx>
 #include <headless/svpgdi.hxx>