Merge delegates into IFWL_* classes.

xfa/fwl/core/ifwl_picturebox.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_CORE_IFWL_PICTUREBOX_H_
 #define XFA_FWL_CORE_IFWL_PICTUREBOX_H_
 
 #include "xfa/fwl/core/cfwl_widgetimpproperties.h"
 #include "xfa/fwl/core/fwl_error.h"
 #include "xfa/fwl/core/ifwl_dataprovider.h"
 #include "xfa/fwl/core/ifwl_widget.h"
 
 #define FWL_STYLEEXT_PTB_Left 0L << 0
 #define FWL_STYLEEXT_PTB_Center 1L << 0
 #define FWL_STYLEEXT_PTB_Right 2L << 0
 #define FWL_STYLEEXT_PTB_Top 0L << 2
 #define FWL_STYLEEXT_PTB_Vcenter 1L << 2
 #define FWL_STYLEEXT_PTB_Bottom 2L << 2
 #define FWL_STYLEEXT_PTB_Normal 0L << 4
 #define FWL_STYLEEXT_PTB_AutoSize 1L << 4
 #define FWL_STYLEEXT_PTB_StretchImage 2L << 4
 #define FWL_STYLEEXT_PTB_StretchHImage 3L << 4
 #define FWL_STYLEEXT_PTB_StretchVImage 4L << 4
 #define FWL_STYLEEXT_PTB_HAlignMask 3L << 0
 #define FWL_STYLEEXT_PTB_VAlignMask 3L << 2
 #define FWL_STYLEEXT_PTB_StretchAlignMask 7L << 4
 
-class CFWL_PictureBoxImpDelegate;
 class CFWL_WidgetImpProperties;
 class CFX_DIBitmap;
 class IFWL_Widget;
 
 class IFWL_PictureBoxDP : public IFWL_DataProvider {
  public:
   virtual CFX_DIBitmap* GetPicture(IFWL_Widget* pWidget) = 0;
   virtual CFX_DIBitmap* GetErrorPicture(IFWL_Widget* pWidget) = 0;
   virtual CFX_DIBitmap* GetInitialPicture(IFWL_Widget* pWidget) = 0;
   virtual int32_t GetOpacity(IFWL_Widget* pWidget) = 0;
   virtual int32_t GetFlipMode(IFWL_Widget* pWidget) = 0;
   virtual FWL_Error GetMatrix(IFWL_Widget* pWidget, CFX_Matrix& matrix) = 0;
 };
 
 class IFWL_PictureBox : public IFWL_Widget {
  public:
   explicit IFWL_PictureBox(const IFWL_App* app,
                            const CFWL_WidgetImpProperties& properties);
   ~IFWL_PictureBox() override;
 
   // IFWL_Widget
   FWL_Type GetClassID() const override;
   FWL_Error GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE) override;
   FWL_Error Update() override;
   FWL_Error DrawWidget(CFX_Graphics* pGraphics,
                        const CFX_Matrix* pMatrix = nullptr) override;
+  void OnDrawWidget(CFX_Graphics* pGraphics,
+                    const CFX_Matrix* pMatrix) override;
 
  protected:
-  friend class CFWL_PictureBoxImpDelegate;
-
   void DrawBkground(CFX_Graphics* pGraphics,
                     IFWL_ThemeProvider* pTheme,
                     const CFX_Matrix* pMatrix = nullptr);
   bool VStyle(uint32_t dwStyle);
 
   CFX_RectF m_rtClient;
   CFX_RectF m_rtImage;
   CFX_Matrix m_matrix;
   FX_BOOL m_bTop;
   FX_BOOL m_bVCenter;
   FX_BOOL m_bButton;
 };
 
-class CFWL_PictureBoxImpDelegate : public CFWL_WidgetImpDelegate {
- public:
-  CFWL_PictureBoxImpDelegate(IFWL_PictureBox* pOwner);
-  void OnDrawWidget(CFX_Graphics* pGraphics,
-                    const CFX_Matrix* pMatrix = nullptr) override;
-
- protected:
-  IFWL_PictureBox* m_pOwner;
-};
-
 #endif  // XFA_FWL_CORE_IFWL_PICTUREBOX_H_