290 lines
8.8 KiB
C++
290 lines
8.8 KiB
C++
// Copyright 2014 The PDFium Authors
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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// Original code copyright 2014 Foxit Software Inc. http://www.foxitsoftware.com
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#ifndef FPDFSDK_PWL_CPWL_EDIT_IMPL_H_
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#define FPDFSDK_PWL_CPWL_EDIT_IMPL_H_
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#include <deque>
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#include <memory>
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#include <utility>
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#include <vector>
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#include "core/fpdfdoc/cpvt_variabletext.h"
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#include "core/fpdfdoc/cpvt_wordrange.h"
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#include "core/fxcrt/bytestring.h"
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#include "core/fxcrt/fx_codepage_forward.h"
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#include "core/fxcrt/unowned_ptr.h"
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#include "core/fxge/dib/fx_dib.h"
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#include "fpdfsdk/pwl/ipwl_fillernotify.h"
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class CFX_RenderDevice;
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class CPWL_Edit;
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class CPWL_EditImpl {
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public:
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class Iterator {
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public:
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Iterator(CPWL_EditImpl* pEdit, CPVT_VariableText::Iterator* pVTIterator);
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~Iterator();
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bool NextWord();
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bool GetWord(CPVT_Word& word) const;
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bool GetLine(CPVT_Line& line) const;
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void SetAt(int32_t nWordIndex);
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void SetAt(const CPVT_WordPlace& place);
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const CPVT_WordPlace& GetAt() const;
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private:
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UnownedPtr<CPWL_EditImpl> m_pEdit;
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UnownedPtr<CPVT_VariableText::Iterator> m_pVTIterator;
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};
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CPWL_EditImpl();
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~CPWL_EditImpl();
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void DrawEdit(CFX_RenderDevice* pDevice,
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const CFX_Matrix& mtUser2Device,
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FX_COLORREF crTextFill,
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const CFX_FloatRect& rcClip,
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const CFX_PointF& ptOffset,
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const CPVT_WordRange* pRange,
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IPWL_FillerNotify* pFillerNotify,
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IPWL_FillerNotify::PerWindowData* pSystemData);
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void SetFontMap(IPVT_FontMap* pFontMap);
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void SetNotify(CPWL_Edit* pNotify);
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// Returns an iterator for the contents. Should not be released.
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Iterator* GetIterator();
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IPVT_FontMap* GetFontMap();
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void Initialize();
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// Set the bounding box of the text area.
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void SetPlateRect(const CFX_FloatRect& rect);
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void SetScrollPos(const CFX_PointF& point);
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// Set the horizontal text alignment. (nFormat [0:left, 1:middle, 2:right])
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void SetAlignmentH(int32_t nFormat);
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// Set the vertical text alignment. (nFormat [0:left, 1:middle, 2:right])
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void SetAlignmentV(int32_t nFormat);
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// Set the substitution character for hidden text.
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void SetPasswordChar(uint16_t wSubWord);
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// Set the maximum number of words in the text.
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void SetLimitChar(int32_t nLimitChar);
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void SetCharArray(int32_t nCharArray);
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void SetMultiLine(bool bMultiLine);
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void SetAutoReturn(bool bAuto);
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void SetAutoFontSize(bool bAuto);
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void SetAutoScroll(bool bAuto);
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void SetFontSize(float fFontSize);
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void SetTextOverflow(bool bAllowed);
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void OnMouseDown(const CFX_PointF& point, bool bShift, bool bCtrl);
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void OnMouseMove(const CFX_PointF& point, bool bShift, bool bCtrl);
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void OnVK_UP(bool bShift);
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void OnVK_DOWN(bool bShift);
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void OnVK_LEFT(bool bShift);
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void OnVK_RIGHT(bool bShift);
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void OnVK_HOME(bool bShift, bool bCtrl);
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void OnVK_END(bool bShift, bool bCtrl);
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void SetText(const WideString& sText);
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bool InsertWord(uint16_t word, FX_Charset charset);
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bool InsertReturn();
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bool Backspace();
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bool Delete();
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bool ClearSelection();
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bool InsertText(const WideString& sText, FX_Charset charset);
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void ReplaceAndKeepSelection(const WideString& text);
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void ReplaceSelection(const WideString& text);
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bool Redo();
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bool Undo();
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CPVT_WordPlace WordIndexToWordPlace(int32_t index) const;
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CPVT_WordPlace SearchWordPlace(const CFX_PointF& point) const;
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int32_t GetCaret() const;
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CPVT_WordPlace GetCaretWordPlace() const;
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WideString GetSelectedText() const;
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WideString GetText() const;
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float GetFontSize() const;
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uint16_t GetPasswordChar() const;
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CFX_PointF GetScrollPos() const;
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int32_t GetCharArray() const;
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CFX_FloatRect GetContentRect() const;
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WideString GetRangeText(const CPVT_WordRange& range) const;
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void SetSelection(int32_t nStartChar, int32_t nEndChar);
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std::pair<int32_t, int32_t> GetSelection() const;
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void SelectAll();
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void SelectNone();
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bool IsSelected() const;
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void Paint();
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void EnableRefresh(bool bRefresh);
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void RefreshWordRange(const CPVT_WordRange& wr);
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CPVT_WordRange GetWholeWordRange() const;
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CPVT_WordRange GetSelectWordRange() const;
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void EnableUndo(bool bUndo);
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bool IsTextFull() const;
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bool CanUndo() const;
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bool CanRedo() const;
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CPVT_WordRange GetVisibleWordRange() const;
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ByteString GetPDFWordString(int32_t nFontIndex,
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uint16_t Word,
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uint16_t SubWord);
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private:
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class RefreshState {
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public:
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RefreshState();
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~RefreshState();
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void BeginRefresh();
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void Push(const CPVT_WordRange& linerange, const CFX_FloatRect& rect);
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void NoAnalyse();
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std::vector<CFX_FloatRect>* GetRefreshRects();
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void EndRefresh();
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private:
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struct LineRect {
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LineRect(const CPVT_WordRange& wrLine, const CFX_FloatRect& rcLine)
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: m_wrLine(wrLine), m_rcLine(rcLine) {}
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CPVT_WordRange m_wrLine;
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CFX_FloatRect m_rcLine;
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};
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void Add(const CFX_FloatRect& new_rect);
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std::vector<LineRect> m_NewLineRects;
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std::vector<LineRect> m_OldLineRects;
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std::vector<CFX_FloatRect> m_RefreshRects;
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};
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class SelectState {
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public:
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SelectState();
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explicit SelectState(const CPVT_WordRange& range);
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void Reset();
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void Set(const CPVT_WordPlace& begin, const CPVT_WordPlace& end);
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void SetEndPos(const CPVT_WordPlace& end);
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CPVT_WordRange ConvertToWordRange() const;
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bool IsEmpty() const;
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CPVT_WordPlace BeginPos;
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CPVT_WordPlace EndPos;
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};
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class UndoItemIface {
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public:
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virtual ~UndoItemIface() = default;
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// Undo/Redo the current undo item and returns the number of additional
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// items to be processed in |m_UndoItemStack| to fully undo/redo the action.
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// (An example is UndoReplaceSelection::Undo(), if UndoReplaceSelection
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// marks the end of a replace action, UndoReplaceSelection::Undo() returns 3
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// because 3 more undo items need to be processed to revert the replace
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// action: insert text, clear selection and the UndoReplaceSelection which
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// marks the beginning of replace action.) Implementations should return 0
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// by default.
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virtual int Undo() = 0;
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virtual int Redo() = 0;
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};
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class UndoStack {
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public:
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UndoStack();
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~UndoStack();
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void AddItem(std::unique_ptr<UndoItemIface> pItem);
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void Undo();
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void Redo();
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bool CanUndo() const;
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bool CanRedo() const;
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private:
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void RemoveHeads();
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void RemoveTails();
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std::deque<std::unique_ptr<UndoItemIface>> m_UndoItemStack;
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size_t m_nCurUndoPos = 0;
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bool m_bWorking = false;
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};
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class Provider;
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class UndoBackspace;
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class UndoClear;
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class UndoDelete;
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class UndoInsertReturn;
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class UndoInsertText;
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class UndoInsertWord;
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class UndoReplaceSelection;
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bool IsTextOverflow() const;
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bool Clear();
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CPVT_WordPlace DoInsertText(const CPVT_WordPlace& place,
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const WideString& sText,
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FX_Charset charset);
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FX_Charset GetCharSetFromUnicode(uint16_t word, FX_Charset nOldCharset);
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int32_t GetTotalLines() const;
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void SetSelection(const CPVT_WordPlace& begin, const CPVT_WordPlace& end);
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bool Delete(bool bAddUndo);
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bool Clear(bool bAddUndo);
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bool InsertText(const WideString& sText, FX_Charset charset, bool bAddUndo);
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bool InsertWord(uint16_t word, FX_Charset charset, bool bAddUndo);
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bool InsertReturn(bool bAddUndo);
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bool Backspace(bool bAddUndo);
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void SetCaret(const CPVT_WordPlace& place);
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CFX_PointF VTToEdit(const CFX_PointF& point) const;
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void RearrangeAll();
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void RearrangePart(const CPVT_WordRange& range);
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void ScrollToCaret();
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void SetScrollInfo();
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void SetScrollPosX(float fx);
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void SetScrollPosY(float fy);
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void SetScrollLimit();
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void SetContentChanged();
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void PaintInsertText(const CPVT_WordPlace& wpOld,
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const CPVT_WordPlace& wpNew);
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CFX_PointF EditToVT(const CFX_PointF& point) const;
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CFX_FloatRect VTToEdit(const CFX_FloatRect& rect) const;
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void Refresh();
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void RefreshPushLineRects(const CPVT_WordRange& wr);
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void SetCaretInfo();
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void SetCaretOrigin();
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void AddEditUndoItem(std::unique_ptr<UndoItemIface> pEditUndoItem);
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bool m_bEnableScroll = false;
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bool m_bNotifyFlag = false;
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bool m_bEnableOverflow = false;
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bool m_bEnableRefresh = true;
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bool m_bEnableUndo = true;
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int32_t m_nAlignment = 0;
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std::unique_ptr<Provider> m_pVTProvider;
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std::unique_ptr<CPVT_VariableText> m_pVT; // Must outlive |m_pVTProvider|.
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UnownedPtr<CPWL_Edit> m_pNotify;
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CPVT_WordPlace m_wpCaret;
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CPVT_WordPlace m_wpOldCaret;
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SelectState m_SelState;
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CFX_PointF m_ptScrollPos;
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CFX_PointF m_ptRefreshScrollPos;
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std::unique_ptr<Iterator> m_pIterator;
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RefreshState m_Refresh;
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CFX_PointF m_ptCaret;
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UndoStack m_Undo;
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CFX_FloatRect m_rcOldContent;
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};
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#endif // FPDFSDK_PWL_CPWL_EDIT_IMPL_H_
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