1 files changed, 515 insertions, 0 deletions
diff --git a/fpdfsdk/pdfwindow/cpwl_edit_impl.h b/fpdfsdk/pdfwindow/cpwl_edit_impl.h
new file mode 100644
index 0000000000..53ed8da0c2
--- /dev/null
+++ b/fpdfsdk/pdfwindow/cpwl_edit_impl.h
@@ -0,0 +1,515 @@
+// 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 FPDFSDK_PDFWINDOW_CPWL_EDIT_IMPL_H_
+#define FPDFSDK_PDFWINDOW_CPWL_EDIT_IMPL_H_
+
+#include <deque>
+#include <memory>
+#include <vector>
+
+#include "core/fpdfdoc/cpvt_secprops.h"
+#include "core/fpdfdoc/cpvt_wordprops.h"
+#include "core/fxcrt/cfx_unowned_ptr.h"
+
+#define FX_EDIT_ISLATINWORD(u)                  \
+  (u == 0x2D || (u <= 0x005A && u >= 0x0041) || \
+   (u <= 0x007A && u >= 0x0061) || (u <= 0x02AF && u >= 0x00C0))
+
+class CFFL_FormFiller;
+class CPWL_EditImpl;
+class CPWL_EditImpl_Iterator;
+class CPWL_EditImpl_Provider;
+class CFX_RenderDevice;
+class CFX_SystemHandler;
+class CPWL_Edit;
+class CPWL_EditCtrl;
+class IFX_Edit_UndoItem;
+
+struct CPWL_EditImpl_LineRect {
+  CPWL_EditImpl_LineRect(const CPVT_WordRange& wrLine,
+                         const CFX_FloatRect& rcLine)
+      : m_wrLine(wrLine), m_rcLine(rcLine) {}
+
+  CPVT_WordRange m_wrLine;
+  CFX_FloatRect m_rcLine;
+};
+
+class CPWL_EditImpl_LineRectArray {
+ public:
+  CPWL_EditImpl_LineRectArray();
+  ~CPWL_EditImpl_LineRectArray();
+
+  void operator=(CPWL_EditImpl_LineRectArray&& rects);
+  void Add(const CPVT_WordRange& wrLine, const CFX_FloatRect& rcLine);
+
+  int32_t GetSize() const;
+  CPWL_EditImpl_LineRect* GetAt(int32_t nIndex) const;
+
+ private:
+  std::vector<std::unique_ptr<CPWL_EditImpl_LineRect>> m_LineRects;
+};
+
+class CPWL_EditImpl_RectArray {
+ public:
+  CPWL_EditImpl_RectArray();
+  ~CPWL_EditImpl_RectArray();
+
+  void Clear();
+  void Add(const CFX_FloatRect& rect);
+
+  int32_t GetSize() const;
+  CFX_FloatRect* GetAt(int32_t nIndex) const;
+
+ private:
+  std::vector<std::unique_ptr<CFX_FloatRect>> m_Rects;
+};
+
+class CPWL_EditImpl_Refresh {
+ public:
+  CPWL_EditImpl_Refresh();
+  ~CPWL_EditImpl_Refresh();
+
+  void BeginRefresh();
+  void Push(const CPVT_WordRange& linerange, const CFX_FloatRect& rect);
+  void NoAnalyse();
+  const CPWL_EditImpl_RectArray* GetRefreshRects() const;
+  void EndRefresh();
+
+ private:
+  CPWL_EditImpl_LineRectArray m_NewLineRects;
+  CPWL_EditImpl_LineRectArray m_OldLineRects;
+  CPWL_EditImpl_RectArray m_RefreshRects;
+};
+
+class CPWL_EditImpl_Select {
+ public:
+  CPWL_EditImpl_Select();
+  explicit CPWL_EditImpl_Select(const CPVT_WordRange& range);
+
+  void Reset();
+  void Set(const CPVT_WordPlace& begin, const CPVT_WordPlace& end);
+  void SetEndPos(const CPVT_WordPlace& end);
+
+  CPVT_WordRange ConvertToWordRange() const;
+  bool IsEmpty() const;
+
+  CPVT_WordPlace BeginPos;
+  CPVT_WordPlace EndPos;
+};
+
+class CPWL_EditImpl_Undo {
+ public:
+  explicit CPWL_EditImpl_Undo(int32_t nBufsize);
+  ~CPWL_EditImpl_Undo();
+
+  void AddItem(std::unique_ptr<IFX_Edit_UndoItem> pItem);
+  void Undo();
+  void Redo();
+  bool CanUndo() const;
+  bool CanRedo() const;
+  void Reset();
+
+ private:
+  void RemoveHeads();
+  void RemoveTails();
+
+  std::deque<std::unique_ptr<IFX_Edit_UndoItem>> m_UndoItemStack;
+  size_t m_nCurUndoPos;
+  size_t m_nBufSize;
+  bool m_bWorking;
+};
+
+class IFX_Edit_UndoItem {
+ public:
+  virtual ~IFX_Edit_UndoItem() {}
+
+  virtual void Undo() = 0;
+  virtual void Redo() = 0;
+  virtual CFX_WideString GetUndoTitle() const = 0;
+};
+
+class CPWL_EditImpl_UndoItem : public IFX_Edit_UndoItem {
+ public:
+  CPWL_EditImpl_UndoItem();
+  ~CPWL_EditImpl_UndoItem() override;
+
+  CFX_WideString GetUndoTitle() const override;
+
+  void SetFirst(bool bFirst);
+  void SetLast(bool bLast);
+  bool IsLast();
+
+ private:
+  bool m_bFirst;
+  bool m_bLast;
+};
+
+class CFXEU_InsertWord : public CPWL_EditImpl_UndoItem {
+ public:
+  CFXEU_InsertWord(CPWL_EditImpl* pEdit,
+                   const CPVT_WordPlace& wpOldPlace,
+                   const CPVT_WordPlace& wpNewPlace,
+                   uint16_t word,
+                   int32_t charset,
+                   const CPVT_WordProps* pWordProps);
+  ~CFXEU_InsertWord() override;
+
+  // CPWL_EditImpl_UndoItem
+  void Redo() override;
+  void Undo() override;
+
+ private:
+  CFX_UnownedPtr<CPWL_EditImpl> m_pEdit;
+
+  CPVT_WordPlace m_wpOld;
+  CPVT_WordPlace m_wpNew;
+  uint16_t m_Word;
+  int32_t m_nCharset;
+  CPVT_WordProps m_WordProps;
+};
+
+class CFXEU_InsertReturn : public CPWL_EditImpl_UndoItem {
+ public:
+  CFXEU_InsertReturn(CPWL_EditImpl* pEdit,
+                     const CPVT_WordPlace& wpOldPlace,
+                     const CPVT_WordPlace& wpNewPlace,
+                     const CPVT_SecProps* pSecProps,
+                     const CPVT_WordProps* pWordProps);
+  ~CFXEU_InsertReturn() override;
+
+  // CPWL_EditImpl_UndoItem
+  void Redo() override;
+  void Undo() override;
+
+ private:
+  CFX_UnownedPtr<CPWL_EditImpl> m_pEdit;
+
+  CPVT_WordPlace m_wpOld;
+  CPVT_WordPlace m_wpNew;
+  CPVT_SecProps m_SecProps;
+  CPVT_WordProps m_WordProps;
+};
+
+class CFXEU_Backspace : public CPWL_EditImpl_UndoItem {
+ public:
+  CFXEU_Backspace(CPWL_EditImpl* pEdit,
+                  const CPVT_WordPlace& wpOldPlace,
+                  const CPVT_WordPlace& wpNewPlace,
+                  uint16_t word,
+                  int32_t charset,
+                  const CPVT_SecProps& SecProps,
+                  const CPVT_WordProps& WordProps);
+  ~CFXEU_Backspace() override;
+
+  // CPWL_EditImpl_UndoItem
+  void Redo() override;
+  void Undo() override;
+
+ private:
+  CFX_UnownedPtr<CPWL_EditImpl> m_pEdit;
+
+  CPVT_WordPlace m_wpOld;
+  CPVT_WordPlace m_wpNew;
+  uint16_t m_Word;
+  int32_t m_nCharset;
+  CPVT_SecProps m_SecProps;
+  CPVT_WordProps m_WordProps;
+};
+
+class CFXEU_Delete : public CPWL_EditImpl_UndoItem {
+ public:
+  CFXEU_Delete(CPWL_EditImpl* pEdit,
+               const CPVT_WordPlace& wpOldPlace,
+               const CPVT_WordPlace& wpNewPlace,
+               uint16_t word,
+               int32_t charset,
+               const CPVT_SecProps& SecProps,
+               const CPVT_WordProps& WordProps,
+               bool bSecEnd);
+  ~CFXEU_Delete() override;
+
+  // CPWL_EditImpl_UndoItem
+  void Redo() override;
+  void Undo() override;
+
+ private:
+  CFX_UnownedPtr<CPWL_EditImpl> m_pEdit;
+
+  CPVT_WordPlace m_wpOld;
+  CPVT_WordPlace m_wpNew;
+  uint16_t m_Word;
+  int32_t m_nCharset;
+  CPVT_SecProps m_SecProps;
+  CPVT_WordProps m_WordProps;
+  bool m_bSecEnd;
+};
+
+class CFXEU_Clear : public CPWL_EditImpl_UndoItem {
+ public:
+  CFXEU_Clear(CPWL_EditImpl* pEdit,
+              const CPVT_WordRange& wrSel,
+              const CFX_WideString& swText);
+  ~CFXEU_Clear() override;
+
+  // CPWL_EditImpl_UndoItem
+  void Redo() override;
+  void Undo() override;
+
+ private:
+  CFX_UnownedPtr<CPWL_EditImpl> m_pEdit;
+
+  CPVT_WordRange m_wrSel;
+  CFX_WideString m_swText;
+};
+
+class CFXEU_InsertText : public CPWL_EditImpl_UndoItem {
+ public:
+  CFXEU_InsertText(CPWL_EditImpl* pEdit,
+                   const CPVT_WordPlace& wpOldPlace,
+                   const CPVT_WordPlace& wpNewPlace,
+                   const CFX_WideString& swText,
+                   int32_t charset);
+  ~CFXEU_InsertText() override;
+
+  // CPWL_EditImpl_UndoItem
+  void Redo() override;
+  void Undo() override;
+
+ private:
+  CFX_UnownedPtr<CPWL_EditImpl> m_pEdit;
+
+  CPVT_WordPlace m_wpOld;
+  CPVT_WordPlace m_wpNew;
+  CFX_WideString m_swText;
+  int32_t m_nCharset;
+};
+
+class CPWL_EditImpl {
+ public:
+  static void DrawEdit(CFX_RenderDevice* pDevice,
+                       CFX_Matrix* pUser2Device,
+                       CPWL_EditImpl* pEdit,
+                       FX_COLORREF crTextFill,
+                       const CFX_FloatRect& rcClip,
+                       const CFX_PointF& ptOffset,
+                       const CPVT_WordRange* pRange,
+                       CFX_SystemHandler* pSystemHandler,
+                       CFFL_FormFiller* pFFLData);
+
+  CPWL_EditImpl();
+  ~CPWL_EditImpl();
+
+  void SetFontMap(IPVT_FontMap* pFontMap);
+  void SetNotify(CPWL_EditCtrl* pNotify);
+  void SetOprNotify(CPWL_Edit* pOprNotify);
+
+  // Returns an iterator for the contents. Should not be released.
+  CPWL_EditImpl_Iterator* GetIterator();
+  IPVT_FontMap* GetFontMap();
+  void Initialize();
+
+  // Set the bounding box of the text area.
+  void SetPlateRect(const CFX_FloatRect& rect);
+  void SetScrollPos(const CFX_PointF& point);
+
+  // Set the horizontal text alignment. (nFormat [0:left, 1:middle, 2:right])
+  void SetAlignmentH(int32_t nFormat, bool bPaint);
+  // Set the vertical text alignment. (nFormat [0:left, 1:middle, 2:right])
+  void SetAlignmentV(int32_t nFormat, bool bPaint);
+
+  // Set the substitution character for hidden text.
+  void SetPasswordChar(uint16_t wSubWord, bool bPaint);
+
+  // Set the maximum number of words in the text.
+  void SetLimitChar(int32_t nLimitChar);
+  void SetCharArray(int32_t nCharArray);
+  void SetCharSpace(float fCharSpace);
+  void SetMultiLine(bool bMultiLine, bool bPaint);
+  void SetAutoReturn(bool bAuto, bool bPaint);
+  void SetAutoFontSize(bool bAuto, bool bPaint);
+  void SetAutoScroll(bool bAuto, bool bPaint);
+  void SetFontSize(float fFontSize);
+  void SetTextOverflow(bool bAllowed, bool bPaint);
+  void OnMouseDown(const CFX_PointF& point, bool bShift, bool bCtrl);
+  void OnMouseMove(const CFX_PointF& point, bool bShift, bool bCtrl);
+  void OnVK_UP(bool bShift, bool bCtrl);
+  void OnVK_DOWN(bool bShift, bool bCtrl);
+  void OnVK_LEFT(bool bShift, bool bCtrl);
+  void OnVK_RIGHT(bool bShift, bool bCtrl);
+  void OnVK_HOME(bool bShift, bool bCtrl);
+  void OnVK_END(bool bShift, bool bCtrl);
+  void SetText(const CFX_WideString& sText);
+  bool InsertWord(uint16_t word, int32_t charset);
+  bool InsertReturn();
+  bool Backspace();
+  bool Delete();
+  bool ClearSelection();
+  bool InsertText(const CFX_WideString& sText, int32_t charset);
+  bool Redo();
+  bool Undo();
+  CPVT_WordPlace WordIndexToWordPlace(int32_t index) const;
+  CPVT_WordPlace SearchWordPlace(const CFX_PointF& point) const;
+  int32_t GetCaret() const;
+  CPVT_WordPlace GetCaretWordPlace() const;
+  CFX_WideString GetSelectedText() const;
+  CFX_WideString GetText() const;
+  float GetFontSize() const;
+  uint16_t GetPasswordChar() const;
+  CFX_PointF GetScrollPos() const;
+  int32_t GetCharArray() const;
+  CFX_FloatRect GetContentRect() const;
+  CFX_WideString GetRangeText(const CPVT_WordRange& range) const;
+  int32_t GetHorzScale() const;
+  float GetCharSpace() const;
+  void SetSelection(int32_t nStartChar, int32_t nEndChar);
+  void GetSelection(int32_t& nStartChar, int32_t& nEndChar) const;
+  void SelectAll();
+  void SelectNone();
+  bool IsSelected() const;
+  void Paint();
+  void EnableRefresh(bool bRefresh);
+  void RefreshWordRange(const CPVT_WordRange& wr);
+  CPVT_WordRange GetWholeWordRange() const;
+  CPVT_WordRange GetSelectWordRange() const;
+  void EnableUndo(bool bUndo);
+  void EnableOprNotify(bool bNotify);
+  bool IsTextFull() const;
+  bool IsTextOverflow() const;
+  bool CanUndo() const;
+  bool CanRedo() const;
+  CPVT_WordRange GetVisibleWordRange() const;
+
+  bool Empty();
+
+  CPVT_WordPlace DoInsertText(const CPVT_WordPlace& place,
+                              const CFX_WideString& sText,
+                              int32_t charset);
+  int32_t GetCharSetFromUnicode(uint16_t word, int32_t nOldCharset);
+
+  int32_t GetTotalLines() const;
+
+  CFX_ByteString GetPDFWordString(int32_t nFontIndex,
+                                  uint16_t Word,
+                                  uint16_t SubWord);
+
+ private:
+  friend class CPWL_EditImpl_Iterator;
+  friend class CFXEU_InsertWord;
+  friend class CFXEU_InsertReturn;
+  friend class CFXEU_Backspace;
+  friend class CFXEU_Delete;
+  friend class CFXEU_Clear;
+  friend class CFXEU_InsertText;
+
+  void SetSelection(const CPVT_WordPlace& begin, const CPVT_WordPlace& end);
+
+  void RearrangeAll();
+  void RearrangePart(const CPVT_WordRange& range);
+  void ScrollToCaret();
+  void SetScrollInfo();
+  void SetScrollPosX(float fx);
+  void SetScrollPosY(float fy);
+  void SetScrollLimit();
+  void SetContentChanged();
+
+  bool InsertWord(uint16_t word,
+                  int32_t charset,
+                  const CPVT_WordProps* pWordProps,
+                  bool bAddUndo,
+                  bool bPaint);
+  bool InsertReturn(const CPVT_SecProps* pSecProps,
+                    const CPVT_WordProps* pWordProps,
+                    bool bAddUndo,
+                    bool bPaint);
+  bool Backspace(bool bAddUndo, bool bPaint);
+  bool Delete(bool bAddUndo, bool bPaint);
+  bool Clear(bool bAddUndo, bool bPaint);
+  bool InsertText(const CFX_WideString& sText,
+                  int32_t charset,
+                  bool bAddUndo,
+                  bool bPaint);
+  void PaintInsertText(const CPVT_WordPlace& wpOld,
+                       const CPVT_WordPlace& wpNew);
+
+  inline CFX_PointF VTToEdit(const CFX_PointF& point) const;
+  inline CFX_PointF EditToVT(const CFX_PointF& point) const;
+  inline CFX_FloatRect VTToEdit(const CFX_FloatRect& rect) const;
+
+  void Refresh();
+  void RefreshPushLineRects(const CPVT_WordRange& wr);
+
+  void SetCaret(const CPVT_WordPlace& place);
+  void SetCaretInfo();
+  void SetCaretOrigin();
+
+  void AddEditUndoItem(std::unique_ptr<CPWL_EditImpl_UndoItem> pEditUndoItem);
+
+ private:
+  std::unique_ptr<CPDF_VariableText> m_pVT;
+  CFX_UnownedPtr<CPWL_EditCtrl> m_pNotify;
+  CFX_UnownedPtr<CPWL_Edit> m_pOprNotify;
+  std::unique_ptr<CPWL_EditImpl_Provider> m_pVTProvider;
+  CPVT_WordPlace m_wpCaret;
+  CPVT_WordPlace m_wpOldCaret;
+  CPWL_EditImpl_Select m_SelState;
+  CFX_PointF m_ptScrollPos;
+  CFX_PointF m_ptRefreshScrollPos;
+  bool m_bEnableScroll;
+  std::unique_ptr<CPWL_EditImpl_Iterator> m_pIterator;
+  CPWL_EditImpl_Refresh m_Refresh;
+  CFX_PointF m_ptCaret;
+  CPWL_EditImpl_Undo m_Undo;
+  int32_t m_nAlignment;
+  bool m_bNotifyFlag;
+  bool m_bEnableOverflow;
+  bool m_bEnableRefresh;
+  CFX_FloatRect m_rcOldContent;
+  bool m_bEnableUndo;
+  bool m_bOprNotify;
+};
+
+class CPWL_EditImpl_Iterator {
+ public:
+  CPWL_EditImpl_Iterator(CPWL_EditImpl* pEdit,
+                         CPDF_VariableText::Iterator* pVTIterator);
+  ~CPWL_EditImpl_Iterator();
+
+  bool NextWord();
+  bool PrevWord();
+  bool GetWord(CPVT_Word& word) const;
+  bool GetLine(CPVT_Line& line) const;
+  void SetAt(int32_t nWordIndex);
+  void SetAt(const CPVT_WordPlace& place);
+  const CPVT_WordPlace& GetAt() const;
+
+ private:
+  CFX_UnownedPtr<CPWL_EditImpl> m_pEdit;
+  CPDF_VariableText::Iterator* m_pVTIterator;
+};
+
+class CPWL_EditImpl_Provider : public CPDF_VariableText::Provider {
+ public:
+  explicit CPWL_EditImpl_Provider(IPVT_FontMap* pFontMap);
+  ~CPWL_EditImpl_Provider() override;
+
+  IPVT_FontMap* GetFontMap() const;
+
+  // CPDF_VariableText::Provider:
+  int32_t GetCharWidth(int32_t nFontIndex, uint16_t word) override;
+  int32_t GetTypeAscent(int32_t nFontIndex) override;
+  int32_t GetTypeDescent(int32_t nFontIndex) override;
+  int32_t GetWordFontIndex(uint16_t word,
+                           int32_t charset,
+                           int32_t nFontIndex) override;
+  int32_t GetDefaultFontIndex() override;
+  bool IsLatinWord(uint16_t word) override;
+
+ private:
+  IPVT_FontMap* m_pFontMap;
+};
+
+#endif  // FPDFSDK_PDFWINDOW_CPWL_EDIT_IMPL_H_