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 XFA_FWL_CFWL_EDIT_H_
8#define XFA_FWL_CFWL_EDIT_H_
9
10#include <deque>
11#include <memory>
12#include <vector>
13
14#include "xfa/fde/cfde_txtedtengine.h"
15#include "xfa/fde/ifde_txtedtdorecord.h"
16#include "xfa/fwl/cfwl_event.h"
17#include "xfa/fwl/cfwl_scrollbar.h"
18#include "xfa/fwl/cfwl_widget.h"
19#include "xfa/fxgraphics/cfx_path.h"
20
21#define FWL_STYLEEXT_EDT_ReadOnly (1L << 0)
22#define FWL_STYLEEXT_EDT_MultiLine (1L << 1)
23#define FWL_STYLEEXT_EDT_WantReturn (1L << 2)
24#define FWL_STYLEEXT_EDT_AutoHScroll (1L << 4)
25#define FWL_STYLEEXT_EDT_AutoVScroll (1L << 5)
26#define FWL_STYLEEXT_EDT_Validate (1L << 7)
27#define FWL_STYLEEXT_EDT_Password (1L << 8)
28#define FWL_STYLEEXT_EDT_Number (1L << 9)
29#define FWL_STYLEEXT_EDT_CombText (1L << 17)
30#define FWL_STYLEEXT_EDT_HNear 0
31#define FWL_STYLEEXT_EDT_HCenter (1L << 18)
32#define FWL_STYLEEXT_EDT_HFar (2L << 18)
33#define FWL_STYLEEXT_EDT_VNear 0
34#define FWL_STYLEEXT_EDT_VCenter (1L << 20)
35#define FWL_STYLEEXT_EDT_VFar (2L << 20)
36#define FWL_STYLEEXT_EDT_Justified (1L << 22)
37#define FWL_STYLEEXT_EDT_HAlignMask (3L << 18)
38#define FWL_STYLEEXT_EDT_VAlignMask (3L << 20)
39#define FWL_STYLEEXT_EDT_HAlignModeMask (3L << 22)
40#define FWL_STYLEEXT_EDT_ShowScrollbarFocus (1L << 25)
41#define FWL_STYLEEXT_EDT_OuterScrollbar (1L << 26)
42#define FWL_STYLEEXT_EDT_LastLineHeight (1L << 27)
43
44class IFDE_TxtEdtDoRecord;
45class CFWL_Edit;
46class CFWL_MessageMouse;
47class CFWL_WidgetProperties;
48class CFWL_Caret;
49
50class CFWL_Edit : public CFWL_Widget {
51 public:
52  CFWL_Edit(const CFWL_App* app,
53            std::unique_ptr<CFWL_WidgetProperties> properties,
54            CFWL_Widget* pOuter);
55  ~CFWL_Edit() override;
56
57  // CFWL_Widget:
58  FWL_Type GetClassID() const override;
59  CFX_RectF GetAutosizedWidgetRect() override;
60  CFX_RectF GetWidgetRect() override;
61  void Update() override;
62  FWL_WidgetHit HitTest(const CFX_PointF& point) override;
63  void SetStates(uint32_t dwStates) override;
64  void DrawWidget(CFX_Graphics* pGraphics, const CFX_Matrix* pMatrix) override;
65  void SetThemeProvider(IFWL_ThemeProvider* pThemeProvider) override;
66  void OnProcessMessage(CFWL_Message* pMessage) override;
67  void OnProcessEvent(CFWL_Event* pEvent) override;
68  void OnDrawWidget(CFX_Graphics* pGraphics,
69                    const CFX_Matrix* pMatrix) override;
70
71  virtual void SetText(const CFX_WideString& wsText);
72
73  int32_t GetTextLength() const;
74  CFX_WideString GetText() const;
75  void ClearText();
76
77  void AddSelRange(int32_t nStart);
78  int32_t CountSelRanges() const;
79  int32_t GetSelRange(int32_t nIndex, int32_t* nStart) const;
80  void ClearSelections();
81  int32_t GetLimit() const;
82  void SetLimit(int32_t nLimit);
83  void SetAliasChar(FX_WCHAR wAlias);
84  bool Copy(CFX_WideString& wsCopy);
85  bool Cut(CFX_WideString& wsCut);
86  bool Paste(const CFX_WideString& wsPaste);
87  bool Redo(const IFDE_TxtEdtDoRecord* pRecord);
88  bool Undo(const IFDE_TxtEdtDoRecord* pRecord);
89  bool Undo();
90  bool Redo();
91  bool CanUndo();
92  bool CanRedo();
93
94  void SetOuter(CFWL_Widget* pOuter);
95
96  void OnCaretChanged();
97  void OnTextChanged(const FDE_TXTEDT_TEXTCHANGE_INFO& ChangeInfo);
98  void OnSelChanged();
99  bool OnPageLoad(int32_t nPageIndex);
100  bool OnPageUnload(int32_t nPageIndex);
101  void OnAddDoRecord(std::unique_ptr<IFDE_TxtEdtDoRecord> pRecord);
102  bool OnValidate(const CFX_WideString& wsText);
103  void SetScrollOffset(FX_FLOAT fScrollOffset);
104
105 protected:
106  void ShowCaret(CFX_RectF* pRect);
107  void HideCaret(CFX_RectF* pRect);
108  const CFX_RectF& GetRTClient() const { return m_rtClient; }
109  CFDE_TxtEdtEngine* GetTxtEdtEngine() { return &m_EdtEngine; }
110
111 private:
112  void DrawTextBk(CFX_Graphics* pGraphics,
113                  IFWL_ThemeProvider* pTheme,
114                  const CFX_Matrix* pMatrix);
115  void DrawContent(CFX_Graphics* pGraphics,
116                   IFWL_ThemeProvider* pTheme,
117                   const CFX_Matrix* pMatrix);
118  void DrawSpellCheck(CFX_Graphics* pGraphics, const CFX_Matrix* pMatrix);
119
120  void UpdateEditEngine();
121  void UpdateEditParams();
122  void UpdateEditLayout();
123  bool UpdateOffset();
124  bool UpdateOffset(CFWL_ScrollBar* pScrollBar, FX_FLOAT fPosChanged);
125  void UpdateVAlignment();
126  void UpdateCaret();
127  CFWL_ScrollBar* UpdateScroll();
128  void Layout();
129  void LayoutScrollBar();
130  CFX_PointF DeviceToEngine(const CFX_PointF& pt);
131  void InitVerticalScrollBar();
132  void InitHorizontalScrollBar();
133  void InitEngine();
134  void InitCaret();
135  bool ValidateNumberChar(FX_WCHAR cNum);
136  void ClearRecord();
137  bool IsShowScrollBar(bool bVert);
138  bool IsContentHeightOverflow();
139  int32_t AddDoRecord(std::unique_ptr<IFDE_TxtEdtDoRecord> pRecord);
140  void ProcessInsertError(int32_t iError);
141  void AddSpellCheckObj(CFX_Path& PathData,
142                        int32_t nStart,
143                        int32_t nCount,
144                        FX_FLOAT fOffSetX,
145                        FX_FLOAT fOffSetY);
146
147  void DoButtonDown(CFWL_MessageMouse* pMsg);
148  void OnFocusChanged(CFWL_Message* pMsg, bool bSet);
149  void OnLButtonDown(CFWL_MessageMouse* pMsg);
150  void OnLButtonUp(CFWL_MessageMouse* pMsg);
151  void OnButtonDblClk(CFWL_MessageMouse* pMsg);
152  void OnMouseMove(CFWL_MessageMouse* pMsg);
153  void OnKeyDown(CFWL_MessageKey* pMsg);
154  void OnChar(CFWL_MessageKey* pMsg);
155  bool OnScroll(CFWL_ScrollBar* pScrollBar,
156                CFWL_EventScroll::Code dwCode,
157                FX_FLOAT fPos);
158
159  CFX_RectF m_rtClient;
160  CFX_RectF m_rtEngine;
161  CFX_RectF m_rtStatic;
162  FX_FLOAT m_fVAlignOffset;
163  FX_FLOAT m_fScrollOffsetX;
164  FX_FLOAT m_fScrollOffsetY;
165  CFDE_TxtEdtEngine m_EdtEngine;
166  bool m_bLButtonDown;
167  int32_t m_nSelStart;
168  int32_t m_nLimit;
169  FX_FLOAT m_fFontSize;
170  bool m_bSetRange;
171  int32_t m_iMax;
172  std::unique_ptr<CFWL_ScrollBar> m_pVertScrollBar;
173  std::unique_ptr<CFWL_ScrollBar> m_pHorzScrollBar;
174  std::unique_ptr<CFWL_Caret> m_pCaret;
175  CFX_WideString m_wsCache;
176  CFX_WideString m_wsFont;
177  std::deque<std::unique_ptr<IFDE_TxtEdtDoRecord>> m_DoRecords;
178  int32_t m_iCurRecord;
179  int32_t m_iMaxRecord;
180};
181
182#endif  // XFA_FWL_CFWL_EDIT_H_
183