blob: 049359e329f5fadfb9e24c4940248f20a79e9ce8 [file] [log] [blame]
// 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.
#include <deque>
#include <memory>
#include <utility>
#include <vector>
#include "core/fpdfdoc/cpvt_variabletext.h"
#include "core/fpdfdoc/cpvt_wordrange.h"
#include "core/fxcrt/fx_codepage_forward.h"
#include "core/fxcrt/unowned_ptr.h"
#include "core/fxge/dib/fx_dib.h"
class CFFL_FormField;
class CFX_RenderDevice;
class CPWL_Edit;
class IPWL_SystemHandler;
class CPWL_EditImpl {
class Iterator {
Iterator(CPWL_EditImpl* pEdit, CPVT_VariableText::Iterator* pVTIterator);
bool NextWord();
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;
UnownedPtr<CPWL_EditImpl> m_pEdit;
UnownedPtr<CPVT_VariableText::Iterator> m_pVTIterator;
static void DrawEdit(CFX_RenderDevice* pDevice,
const CFX_Matrix& mtUser2Device,
CPWL_EditImpl* pEdit,
const CFX_FloatRect& rcClip,
const CFX_PointF& ptOffset,
const CPVT_WordRange* pRange,
IPWL_SystemHandler* pSystemHandler,
CFFL_FormField* pFFLData);
void SetFontMap(IPVT_FontMap* pFontMap);
void SetNotify(CPWL_Edit* pNotify);
// Returns an iterator for the contents. Should not be released.
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);
// Set the vertical text alignment. (nFormat [0:left, 1:middle, 2:right])
void SetAlignmentV(int32_t nFormat);
// Set the substitution character for hidden text.
void SetPasswordChar(uint16_t wSubWord);
// 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);
void SetAutoReturn(bool bAuto);
void SetAutoFontSize(bool bAuto);
void SetAutoScroll(bool bAuto);
void SetFontSize(float fFontSize);
void SetTextOverflow(bool bAllowed);
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 WideString& sText);
bool InsertWord(uint16_t word, FX_Charset charset);
bool InsertReturn();
bool Backspace();
bool Delete();
bool ClearSelection();
bool InsertText(const WideString& sText, FX_Charset charset);
void ReplaceSelection(const WideString& text);
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;
WideString GetSelectedText() const;
WideString GetText() const;
float GetFontSize() const;
uint16_t GetPasswordChar() const;
CFX_PointF GetScrollPos() const;
int32_t GetCharArray() const;
CFX_FloatRect GetContentRect() const;
WideString GetRangeText(const CPVT_WordRange& range) const;
float GetCharSpace() const;
void SetSelection(int32_t nStartChar, int32_t nEndChar);
std::pair<int32_t, int32_t> GetSelection() 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);
bool IsTextFull() const;
bool CanUndo() const;
bool CanRedo() const;
CPVT_WordRange GetVisibleWordRange() const;
ByteString GetPDFWordString(int32_t nFontIndex,
uint16_t Word,
uint16_t SubWord);
class RefreshState {
void BeginRefresh();
void Push(const CPVT_WordRange& linerange, const CFX_FloatRect& rect);
void NoAnalyse();
std::vector<CFX_FloatRect>* GetRefreshRects();
void EndRefresh();
struct LineRect {
LineRect(const CPVT_WordRange& wrLine, const CFX_FloatRect& rcLine)
: m_wrLine(wrLine), m_rcLine(rcLine) {}
CPVT_WordRange m_wrLine;
CFX_FloatRect m_rcLine;
void Add(const CFX_FloatRect& new_rect);
std::vector<LineRect> m_NewLineRects;
std::vector<LineRect> m_OldLineRects;
std::vector<CFX_FloatRect> m_RefreshRects;
class SelectState {
explicit SelectState(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 UndoItemIface {
virtual ~UndoItemIface() = default;
// Undo/Redo the current undo item and returns the number of additional
// items to be processed in |m_UndoItemStack| to fully undo/redo the action.
// (An example is UndoReplaceSelection::Undo(), if UndoReplaceSelection
// marks the end of a replace action, UndoReplaceSelection::Undo() returns 3
// because 3 more undo items need to be processed to revert the replace
// action: insert text, clear selection and the UndoReplaceSelection which
// marks the beginning of replace action.) Implementations should return 0
// by default.
virtual int Undo() = 0;
virtual int Redo() = 0;
class UndoStack {
void AddItem(std::unique_ptr<UndoItemIface> pItem);
void Undo();
void Redo();
bool CanUndo() const;
bool CanRedo() const;
void RemoveHeads();
void RemoveTails();
std::deque<std::unique_ptr<UndoItemIface>> m_UndoItemStack;
size_t m_nCurUndoPos = 0;
bool m_bWorking = false;
class Provider;
class UndoBackspace;
class UndoClear;
class UndoDelete;
class UndoInsertReturn;
class UndoInsertText;
class UndoInsertWord;
class UndoReplaceSelection;
bool IsTextOverflow() const;
bool Clear();
CPVT_WordPlace DoInsertText(const CPVT_WordPlace& place,
const WideString& sText,
FX_Charset charset);
FX_Charset GetCharSetFromUnicode(uint16_t word, FX_Charset nOldCharset);
int32_t GetTotalLines() const;
void SetSelection(const CPVT_WordPlace& begin, const CPVT_WordPlace& end);
bool Delete(bool bAddUndo);
bool Clear(bool bAddUndo);
bool InsertText(const WideString& sText, FX_Charset charset, bool bAddUndo);
bool InsertWord(uint16_t word, FX_Charset charset, bool bAddUndo);
bool InsertReturn(bool bAddUndo);
bool Backspace(bool bAddUndo);
void SetCaret(const CPVT_WordPlace& place);
CFX_PointF VTToEdit(const CFX_PointF& point) const;
void RearrangeAll();
void RearrangePart(const CPVT_WordRange& range);
void ScrollToCaret();
void SetScrollInfo();
void SetScrollPosX(float fx);
void SetScrollPosY(float fy);
void SetScrollLimit();
void SetContentChanged();
void PaintInsertText(const CPVT_WordPlace& wpOld,
const CPVT_WordPlace& wpNew);
CFX_PointF EditToVT(const CFX_PointF& point) const;
CFX_FloatRect VTToEdit(const CFX_FloatRect& rect) const;
void Refresh();
void RefreshPushLineRects(const CPVT_WordRange& wr);
void SetCaretInfo();
void SetCaretOrigin();
void AddEditUndoItem(std::unique_ptr<UndoItemIface> pEditUndoItem);
bool m_bEnableScroll = false;
bool m_bNotifyFlag = false;
bool m_bEnableOverflow = false;
bool m_bEnableRefresh = true;
bool m_bEnableUndo = true;
int32_t m_nAlignment = 0;
std::unique_ptr<Provider> m_pVTProvider;
std::unique_ptr<CPVT_VariableText> m_pVT; // Must outlive |m_pVTProvider|.
UnownedPtr<CPWL_Edit> m_pNotify;
CPVT_WordPlace m_wpCaret;
CPVT_WordPlace m_wpOldCaret;
SelectState m_SelState;
CFX_PointF m_ptScrollPos;
CFX_PointF m_ptRefreshScrollPos;
std::unique_ptr<Iterator> m_pIterator;
RefreshState m_Refresh;
CFX_PointF m_ptCaret;
UndoStack m_Undo;
CFX_FloatRect m_rcOldContent;