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      1 // Copyright 2014 PDFium Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 // Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
      6 
      7 #ifndef _FWL_THEME_H
      8 #define _FWL_THEME_H
      9 class IFWL_Widget;
     10 class CFWL_ThemePart;
     11 class CFWL_ThemeBackground;
     12 class CFWL_ThemeText;
     13 class CFWL_ThemeElement;
     14 class IFWL_ThemeProvider;
     15 #define FWL_WGTCAPACITY_CXBorder 1
     16 #define FWL_WGTCAPACITY_CYBorder 2
     17 #define FWL_WGTCAPACITY_ScrollBarWidth 3
     18 #define FWL_WGTCAPACITY_EdgeFlat 4
     19 #define FWL_WGTCAPACITY_EdgeRaised 5
     20 #define FWL_WGTCAPACITY_EdgeSunken 6
     21 #define FWL_WGTCAPACITY_Font 7
     22 #define FWL_WGTCAPACITY_FontSize 8
     23 #define FWL_WGTCAPACITY_TextColor 9
     24 #define FWL_WGTCAPACITY_TextSelColor 10
     25 #define FWL_WGTCAPACITY_LineHeight 11
     26 #define FWL_WGTCAPACITY_UIMargin 12
     27 #define FWL_WGTCAPACITY_SpaceAboveBelow 13
     28 #define FWL_WGTCAPACITY_MAX 65535
     29 class CFWL_ThemePart {
     30  public:
     31   CFWL_ThemePart()
     32       : m_pWidget(NULL), m_iPart(0), m_dwStates(0), m_dwData(0), m_pData(NULL) {
     33     m_rtPart.Reset();
     34     m_matrix.SetIdentity();
     35   }
     36   CFX_Matrix m_matrix;
     37   CFX_RectF m_rtPart;
     38   IFWL_Widget* m_pWidget;
     39   int32_t m_iPart;
     40   FX_DWORD m_dwStates;
     41   FX_DWORD m_dwData;
     42   void* m_pData;
     43 };
     44 class CFWL_ThemeBackground : public CFWL_ThemePart {
     45  public:
     46   CFWL_ThemeBackground() : m_pGraphics(NULL), m_pImage(NULL), m_pPath(NULL) {}
     47   CFX_Graphics* m_pGraphics;
     48   CFX_DIBitmap* m_pImage;
     49   CFX_Path* m_pPath;
     50 };
     51 class CFWL_ThemeText : public CFWL_ThemePart {
     52  public:
     53   CFWL_ThemeText() : m_pGraphics(NULL) {}
     54   CFX_WideString m_wsText;
     55   FX_DWORD m_dwTTOStyles;
     56   int32_t m_iTTOAlign;
     57   CFX_Graphics* m_pGraphics;
     58 };
     59 class IFWL_ThemeProvider {
     60  public:
     61   virtual ~IFWL_ThemeProvider() {}
     62   virtual FX_BOOL IsValidWidget(IFWL_Widget* pWidget) = 0;
     63   virtual FX_DWORD GetThemeID(IFWL_Widget* pWidget) = 0;
     64   virtual FX_DWORD SetThemeID(IFWL_Widget* pWidget,
     65                               FX_DWORD dwThemeID,
     66                               FX_BOOL bChildren = TRUE) = 0;
     67   virtual FWL_ERR GetThemeMatrix(IFWL_Widget* pWidget, CFX_Matrix& matrix) = 0;
     68   virtual FWL_ERR SetThemeMatrix(IFWL_Widget* pWidget,
     69                                  const CFX_Matrix& matrix) = 0;
     70   virtual FX_BOOL DrawBackground(CFWL_ThemeBackground* pParams) = 0;
     71   virtual FX_BOOL DrawText(CFWL_ThemeText* pParams) = 0;
     72   virtual void* GetCapacity(CFWL_ThemePart* pThemePart,
     73                             FX_DWORD dwCapacity) = 0;
     74   virtual FX_BOOL IsCustomizedLayout(IFWL_Widget* pWidget) = 0;
     75   virtual FWL_ERR GetPartRect(CFWL_ThemePart* pThemePart,
     76                               CFX_RectF& rtPart) = 0;
     77   virtual FX_BOOL IsInPart(CFWL_ThemePart* pThemePart,
     78                            FX_FLOAT fx,
     79                            FX_FLOAT fy) = 0;
     80   virtual FX_BOOL CalcTextRect(CFWL_ThemeText* pParams, CFX_RectF& rect) = 0;
     81 };
     82 #endif
     83