Properly ref-count CFGAS_GEFont with CFX_RetainPtr.

xfa/fwl/theme/cfwl_widgettp.h

 // Copyright 2014 PDFium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
 
 #ifndef XFA_FWL_THEME_CFWL_WIDGETTP_H_
 #define XFA_FWL_THEME_CFWL_WIDGETTP_H_
 
 #include <memory>
 #include <vector>
 
+#include "core/fxcrt/cfx_retain_ptr.h"
 #include "core/fxcrt/fx_coordinates.h"
 #include "core/fxcrt/fx_system.h"
+#include "xfa/fgas/font/cfgas_gefont.h"
 #include "xfa/fwl/fwl_error.h"
 #include "xfa/fwl/theme/cfwl_utils.h"
 #include "xfa/fxgraphics/cfx_graphics.h"
 
 class CFDE_TextOut;
 class CFGAS_GEFont;
 class CFWL_ThemeBackground;
 class CFWL_ThemePart;
 class CFWL_ThemeText;
 class CFGAS_FontMgr;
 class CFWL_Widget;
 
 #if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
 class CFX_FontSourceEnum_File;
 #endif
 
 class CFWL_WidgetTP {
  public:
   virtual ~CFWL_WidgetTP();
 
   virtual void Initialize();
   virtual void Finalize();
 
   virtual void DrawBackground(CFWL_ThemeBackground* pParams);
   virtual void DrawText(CFWL_ThemeText* pParams);
 
-  CFGAS_GEFont* GetFont() const { return m_pFDEFont; }
+  const CFX_RetainPtr<CFGAS_GEFont>& GetFont() const { return m_pFDEFont; }
 
  protected:
   struct CColorData {
     FX_ARGB clrBorder[4];
     FX_ARGB clrStart[4];
     FX_ARGB clrEnd[4];
     FX_ARGB clrSign[4];
   };
 
   CFWL_WidgetTP();
@@ skipping 35 matching lines @@
                FWLTHEME_STATE eState,
                CFX_Matrix* pMatrix = nullptr);
   void DrawArrowBtn(CFX_Graphics* pGraphics,
                     const CFX_RectF* pRect,
                     FWLTHEME_DIRECTION eDict,
                     FWLTHEME_STATE eState,
                     CFX_Matrix* pMatrix = nullptr);
 
   uint32_t m_dwRefCount;
   std::unique_ptr<CFDE_TextOut> m_pTextOut;
-  CFGAS_GEFont* m_pFDEFont;
+  CFX_RetainPtr<CFGAS_GEFont> m_pFDEFont;
   std::unique_ptr<CColorData> m_pColorData;
 };
 
 void FWLTHEME_Release();
 
 class CFWL_FontData {
  public:
   CFWL_FontData();
   virtual ~CFWL_FontData();
 
   bool Equal(const CFX_WideStringC& wsFontFamily,
              uint32_t dwFontStyles,
              uint16_t wCodePage);
   bool LoadFont(const CFX_WideStringC& wsFontFamily,
                 uint32_t dwFontStyles,
                 uint16_t wCodePage);
-  CFGAS_GEFont* GetFont() const { return m_pFont.get(); }
+  CFX_RetainPtr<CFGAS_GEFont> GetFont() const { return m_pFont; }
 
  protected:
   CFX_WideString m_wsFamily;
   uint32_t m_dwStyles;
   uint32_t m_dwCodePage;
 #if _FXM_PLATFORM_ != _FXM_PLATFORM_WINDOWS_
   std::unique_ptr<CFX_FontSourceEnum_File> m_pFontSource;
 #endif
   std::unique_ptr<CFGAS_FontMgr> m_pFontMgr;
-  std::unique_ptr<CFGAS_GEFont> m_pFont;
+  CFX_RetainPtr<CFGAS_GEFont> m_pFont;
 };
 
 class CFWL_FontManager {
  public:
   static CFWL_FontManager* GetInstance();
   static void DestroyInstance();
 
-  CFGAS_GEFont* FindFont(const CFX_WideStringC& wsFontFamily,
-                         uint32_t dwFontStyles,
-                         uint16_t dwCodePage);
+  CFX_RetainPtr<CFGAS_GEFont> FindFont(const CFX_WideStringC& wsFontFamily,
+                                       uint32_t dwFontStyles,
+                                       uint16_t dwCodePage);
 
  protected:
   CFWL_FontManager();
   virtual ~CFWL_FontManager();
 
   static CFWL_FontManager* s_FontManager;
   std::vector<std::unique_ptr<CFWL_FontData>> m_FontsArray;
 };
 
 #endif  // XFA_FWL_THEME_CFWL_WIDGETTP_H_