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_EDIT_IMP_H
8 #define _FWL_EDIT_IMP_H
9 
10 #include <memory>
11 
12 class CFWL_WidgetImp;
13 class CFWL_WidgetImpProperties;
14 class CFWL_WidgetImpDelegate;
15 class CFWL_ScrollBarImp;
16 class IFWL_Caret;
17 class IFWL_AdapterTextField;
18 class CFWL_EditImp;
19 class CFWL_EditImpDelegate;
20 class CFWL_EditImp : public CFWL_WidgetImp, public IFDE_TxtEdtEventSink {
21  public:
22   CFWL_EditImp(const CFWL_WidgetImpProperties& properties, IFWL_Widget* pOuter);
23   ~CFWL_EditImp() override;
24 
25   // CFWL_WidgetImp:
26   FWL_ERR GetClassName(CFX_WideString& wsClass) const override;
27   FX_DWORD GetClassID() const override;
28   FWL_ERR Initialize() override;
29   FWL_ERR Finalize() override;
30   FWL_ERR GetWidgetRect(CFX_RectF& rect, FX_BOOL bAutoSize = FALSE) override;
31   FWL_ERR SetWidgetRect(const CFX_RectF& rect) override;
32   FWL_ERR Update() override;
33   FX_DWORD HitTest(FX_FLOAT fx, FX_FLOAT fy) override;
34   FWL_ERR SetStates(FX_DWORD dwStates, FX_BOOL bSet = TRUE) override;
35   FWL_ERR DrawWidget(CFX_Graphics* pGraphics,
36                      const CFX_Matrix* pMatrix = NULL) override;
37   FWL_ERR SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) override;
38 
39   virtual FWL_ERR SetText(const CFX_WideString& wsText);
40   virtual int32_t GetTextLength() const;
41   virtual FWL_ERR GetText(CFX_WideString& wsText,
42                           int32_t nStart = 0,
43                           int32_t nCount = -1) const;
44   virtual FWL_ERR ClearText();
45   virtual int32_t GetCaretPos() const;
46   virtual int32_t SetCaretPos(int32_t nIndex, FX_BOOL bBefore = TRUE);
47   virtual FWL_ERR AddSelRange(int32_t nStart, int32_t nCount = -1);
48   virtual int32_t CountSelRanges();
49   virtual int32_t GetSelRange(int32_t nIndex, int32_t& nStart);
50   virtual FWL_ERR ClearSelections();
51   virtual int32_t GetLimit();
52   virtual FWL_ERR SetLimit(int32_t nLimit);
53   virtual FWL_ERR SetAliasChar(FX_WCHAR wAlias);
54   virtual FWL_ERR SetFormatString(const CFX_WideString& wsFormat);
55   virtual FWL_ERR Insert(int32_t nStart, const FX_WCHAR* lpText, int32_t nLen);
56   virtual FWL_ERR DeleteSelections();
57   virtual FWL_ERR DeleteRange(int32_t nStart, int32_t nCount = -1);
58   virtual FWL_ERR ReplaceSelections(const CFX_WideStringC& wsReplace);
59   virtual FWL_ERR Replace(int32_t nStart,
60                           int32_t nLen,
61                           const CFX_WideStringC& wsReplace);
62   virtual FWL_ERR DoClipboard(int32_t iCmd);
63   virtual FX_BOOL Copy(CFX_WideString& wsCopy);
64   virtual FX_BOOL Cut(CFX_WideString& wsCut);
65   virtual FX_BOOL Paste(const CFX_WideString& wsPaste);
66   virtual FX_BOOL Delete();
67   virtual FX_BOOL Redo(const CFX_ByteStringC& bsRecord);
68   virtual FX_BOOL Undo(const CFX_ByteStringC& bsRecord);
69   virtual FX_BOOL Undo();
70   virtual FX_BOOL Redo();
71   virtual FX_BOOL CanUndo();
72   virtual FX_BOOL CanRedo();
73   virtual FWL_ERR SetTabWidth(FX_FLOAT fTabWidth, FX_BOOL bEquidistant);
74   virtual FWL_ERR SetOuter(IFWL_Widget* pOuter);
75   virtual FWL_ERR SetNumberRange(int32_t iMin, int32_t iMax);
76   void On_CaretChanged(IFDE_TxtEdtEngine* pEdit,
77                        int32_t nPage,
78                        FX_BOOL bVisible = true) override;
79   void On_TextChanged(IFDE_TxtEdtEngine* pEdit,
80                       FDE_TXTEDT_TEXTCHANGE_INFO& ChangeInfo) override;
On_PageCountChanged(IFDE_TxtEdtEngine * pEdit)81   void On_PageCountChanged(IFDE_TxtEdtEngine* pEdit) override {}
82   void On_SelChanged(IFDE_TxtEdtEngine* pEdit) override;
83   FX_BOOL On_PageLoad(IFDE_TxtEdtEngine* pEdit,
84                       int32_t nPageIndex,
85                       int32_t nPurpose) override;
86   FX_BOOL On_PageUnload(IFDE_TxtEdtEngine* pEdit,
87                         int32_t nPageIndex,
88                         int32_t nPurpose) override;
On_PageChange(IFDE_TxtEdtEngine * pEdit,int32_t nPageIndex)89   FX_BOOL On_PageChange(IFDE_TxtEdtEngine* pEdit, int32_t nPageIndex) override {
90     return TRUE;
91   }
92   void On_AddDoRecord(IFDE_TxtEdtEngine* pEdit,
93                       const CFX_ByteStringC& bsDoRecord) override;
94   FX_BOOL On_ValidateField(IFDE_TxtEdtEngine* pEdit,
95                            int32_t nBlockIndex,
96                            int32_t nFieldIndex,
97                            const CFX_WideString& wsFieldText,
98                            int32_t nCharIndex) override;
99   FX_BOOL On_ValidateBlock(IFDE_TxtEdtEngine* pEdit,
100                            int32_t nBlockIndex) override;
101   FX_BOOL On_GetBlockFormatText(IFDE_TxtEdtEngine* pEdit,
102                                 int32_t nBlockIndex,
103                                 CFX_WideString& wsBlockText) override;
104   FX_BOOL On_Validate(IFDE_TxtEdtEngine* pEdit,
105                       CFX_WideString& wsText) override;
106   virtual FWL_ERR SetBackgroundColor(FX_DWORD color);
107   virtual FWL_ERR SetFont(const CFX_WideString& wsFont, FX_FLOAT fSize);
108   void SetScrollOffset(FX_FLOAT fScrollOffset);
109   FX_BOOL GetSuggestWords(CFX_PointF pointf, CFX_ByteStringArray& sSuggest);
110   FX_BOOL ReplaceSpellCheckWord(CFX_PointF pointf,
111                                 const CFX_ByteStringC& bsReplace);
112 
113  protected:
114   void DrawTextBk(CFX_Graphics* pGraphics,
115                   IFWL_ThemeProvider* pTheme,
116                   const CFX_Matrix* pMatrix = NULL);
117   void DrawContent(CFX_Graphics* pGraphics,
118                    IFWL_ThemeProvider* pTheme,
119                    const CFX_Matrix* pMatrix = NULL);
120   void UpdateEditEngine();
121   void UpdateEditParams();
122   void UpdateEditLayout();
123   FX_BOOL UpdateOffset();
124   FX_BOOL UpdateOffset(IFWL_ScrollBar* pScrollBar, FX_FLOAT fPosChanged);
125   void UpdateVAlignment();
126   void UpdateCaret();
127   IFWL_ScrollBar* UpdateScroll();
128   void Layout();
129   void LayoutScrollBar();
130   void DeviceToEngine(CFX_PointF& pt);
131   void InitScrollBar(FX_BOOL bVert = TRUE);
132   void InitEngine();
133   virtual void ShowCaret(FX_BOOL bVisible, CFX_RectF* pRect = NULL);
134   FX_BOOL ValidateNumberChar(FX_WCHAR cNum);
135   void InitCaret();
136   void ClearRecord();
137   FX_BOOL IsShowScrollBar(FX_BOOL bVert);
138   FX_BOOL IsContentHeightOverflow();
139   int32_t AddDoRecord(const CFX_ByteStringC& bsDoRecord);
140   void ProcessInsertError(int32_t iError);
141 
142   void DrawSpellCheck(CFX_Graphics* pGraphics,
143                       const CFX_Matrix* pMatrix = NULL);
144   void AddSpellCheckObj(CFX_Path& PathData,
145                         int32_t nStart,
146                         int32_t nCount,
147                         FX_FLOAT fOffSetX,
148                         FX_FLOAT fOffSetY);
149   int32_t GetWordAtPoint(CFX_PointF pointf, int32_t& nCount);
150   CFX_RectF m_rtClient;
151   CFX_RectF m_rtEngine;
152   CFX_RectF m_rtStatic;
153   FX_FLOAT m_fVAlignOffset;
154   FX_FLOAT m_fScrollOffsetX;
155   FX_FLOAT m_fScrollOffsetY;
156   IFDE_TxtEdtEngine* m_pEdtEngine;
157   FX_BOOL m_bLButtonDown;
158   int32_t m_nSelStart;
159   int32_t m_nLimit;
160   FX_FLOAT m_fSpaceAbove;
161   FX_FLOAT m_fSpaceBelow;
162   FX_FLOAT m_fFontSize;
163   FX_ARGB m_argbSel;
164   FX_BOOL m_bSetRange;
165   int32_t m_iMin;
166   int32_t m_iMax;
167   std::unique_ptr<IFWL_ScrollBar> m_pVertScrollBar;
168   std::unique_ptr<IFWL_ScrollBar> m_pHorzScrollBar;
169   std::unique_ptr<IFWL_Caret> m_pCaret;
170   CFX_WideString m_wsCache;
171   friend class CFWL_TxtEdtEventSink;
172   friend class CFWL_EditImpDelegate;
173   FX_DWORD m_backColor;
174   FX_BOOL m_updateBackColor;
175   CFX_WideString m_wsFont;
176   CFX_ByteStringArray m_RecordArr;
177   int32_t m_iCurRecord;
178   int32_t m_iMaxRecord;
179 };
180 class CFWL_EditImpDelegate : public CFWL_WidgetImpDelegate {
181  public:
182   CFWL_EditImpDelegate(CFWL_EditImp* pOwner);
183   int32_t OnProcessMessage(CFWL_Message* pMessage) override;
184   FWL_ERR OnProcessEvent(CFWL_Event* pEvent) override;
185   FWL_ERR OnDrawWidget(CFX_Graphics* pGraphics,
186                        const CFX_Matrix* pMatrix = NULL) override;
187 
188  protected:
189   void DoActivate(CFWL_MsgActivate* pMsg);
190   void DoDeactivate(CFWL_MsgDeactivate* pMsg);
191   void DoButtonDown(CFWL_MsgMouse* pMsg);
192   void OnFocusChanged(CFWL_Message* pMsg, FX_BOOL bSet = TRUE);
193   void OnLButtonDown(CFWL_MsgMouse* pMsg);
194   void OnLButtonUp(CFWL_MsgMouse* pMsg);
195   void OnButtonDblClk(CFWL_MsgMouse* pMsg);
196   void OnMouseMove(CFWL_MsgMouse* pMsg);
197   void OnKeyDown(CFWL_MsgKey* pMsg);
198   void OnChar(CFWL_MsgKey* pMsg);
199   FX_BOOL OnScroll(IFWL_ScrollBar* pScrollBar, FX_DWORD dwCode, FX_FLOAT fPos);
200   void DoCursor(CFWL_MsgMouse* pMsg);
201   CFWL_EditImp* m_pOwner;
202 };
203 #endif
204