src/TortoiseMerge/BaseView.h

   1 // TortoiseGitMerge - a Diff/Patch program
   2
   3 // Copyright (C) 2003-2015 - TortoiseSVN
   4
   5 // This program is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU General Public License
   7 // as published by the Free Software Foundation; either version 2
   8 // of the License, or (at your option) any later version.
   9
  10 // This program is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 // GNU General Public License for more details.
  14
  15 // You should have received a copy of the GNU General Public License
  16 // along with this program; if not, write to the Free Software Foundation,
  17 // 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  18 //
  19 #pragma once
  20 #include "DiffData.h"
  21 #include "SVNLineDiff.h"
  22 #include "ScrollTool.h"
  23 #include "Undo.h"
  24 #include "LocatorBar.h"
  25 #include "LineColors.h"
  26 #include "TripleClick.h"
  27 #include "IconMenu.h"
  28 #include "FindDlg.h"
  29
  30 typedef struct inlineDiffPos
  31 {
  32         apr_off_t               start;
  33         apr_off_t               end;
  34 } inlineDiffPos;
  35
  36
  37 /**
  38  * \ingroup TortoiseMerge
  39  *
  40  * View class providing the basic functionality for
  41  * showing diffs. Has three parent classes which inherit
  42  * from this base class: CLeftView, CRightView and CBottomView.
  43  */
  44 class CBaseView : public CView, public CTripleClick
  45 {
  46         DECLARE_DYNCREATE(CBaseView)
  47 friend class CLineDiffBar;
  48 public:
  49         typedef CFileTextLines::UnicodeType UnicodeType;
  50         enum ECharGroup { // ordered by priority low-to-hi
  51                 CHG_UNKNOWN,
  52                 CHG_CONTROL, // x00-x08, x0a-x1f
  53                 CHG_WHITESPACE, // space, tab
  54                 CHG_WORDSEPARATOR, // 0x21-2f, x3a-x40, x5b-x60, x7b-x7f .,:;!?(){}[]/\<> ...
  55                 CHG_WORDLETTER, // alpha num _ (others)
  56         };
  57
  58         CBaseView();
  59         virtual ~CBaseView();
  60
  61 public: // methods
  62         /**
  63          * Indicates that the underlying document has been updated. Reloads all
  64          * data and redraws the view.
  65          */
  66         virtual void    DocumentUpdated();
  67         /**
  68          * Returns the number of lines visible on the view.
  69          */
  70         int                             GetScreenLines();
  71         /**
  72          * Scrolls the view to the given line.
  73          * \param nNewTopLine The new top line to scroll the view to
  74          * \param bTrackScrollBar If TRUE, then the scrollbars are affected too.
  75          */
  76         void                    ScrollToLine(int nNewTopLine, BOOL bTrackScrollBar = TRUE);
  77         void                    ScrollAllToLine(int nNewTopLine, BOOL bTrackScrollBar = TRUE);
  78         void                    ScrollSide(int delta);
  79         void                    ScrollAllSide(int delta);
  80         void                    ScrollVertical(short delta);
  81         static void             RecalcAllVertScrollBars(BOOL bPositionOnly = FALSE);
  82         static void             RecalcAllHorzScrollBars(BOOL bPositionOnly = FALSE);
  83         void                    GoToLine(int nNewLine, BOOL bAll = TRUE);
  84         void                    ScrollToChar(int nNewOffsetChar, BOOL bTrackScrollBar = TRUE);
  85         void                    ScrollAllToChar(int nNewOffsetChar, BOOL bTrackScrollBar = TRUE);
  86         void                    SetReadonly(bool bReadonly = true) {m_bReadonly = bReadonly; if (m_pFindDialog) m_pFindDialog->SetReadonly(m_bReadonly); }
  87         void                    SetWritable(bool bWritable = true) {m_bReadonly = !bWritable; if (m_pFindDialog) m_pFindDialog->SetReadonly(m_bReadonly); }
  88         void                    SetWritableIsChangable(bool bWritableIsChangable = true) {m_bReadonlyIsChangable = bWritableIsChangable;}
  89         void                    SetTarget(bool bTarget = true) {m_bTarget = bTarget;}
  90         bool                    IsReadonly() const {return m_bReadonly;}
  91         bool                    IsWritable() const {return !m_bReadonly && m_pViewData;}
  92         bool                    IsReadonlyChangable() const {return m_bReadonlyIsChangable && !IsModified();}
  93         bool                    IsTarget() const {return m_bTarget;}
  94         void                    SetCaretAndGoalPosition(const POINT& pt) {UpdateCaretPosition(pt); UpdateGoalPos(); }
  95         void                    SetCaretAndGoalViewPosition(const POINT& pt) {UpdateCaretViewPosition(pt); UpdateGoalPos(); }
  96         void                    SetCaretPosition(const POINT& pt) { SetCaretViewPosition(ConvertScreenPosToView(pt)); }
  97         POINT                   GetCaretPosition() { return ConvertViewPosToScreen(GetCaretViewPosition()); }
  98         void                    SetCaretViewPosition(const POINT & pt) { m_ptCaretViewPos = pt; }
  99         POINT                   GetCaretViewPosition() { return m_ptCaretViewPos; }
 100         void                    UpdateCaretPosition(const POINT& pt) { SetCaretPosition(pt); UpdateCaret(); }
 101         void                    UpdateCaretViewPosition(const POINT& pt) { SetCaretViewPosition(pt); UpdateCaret(); EnsureCaretVisible(); }
 102         void                    SetCaretToViewStart() { SetCaretToFirstViewLine(); SetCaretToViewLineStart(); }
 103         void                    SetCaretToFirstViewLine() { m_ptCaretViewPos.y=0; }
 104         void                    SetCaretToViewLineStart() { m_ptCaretViewPos.x=0; }
 105         void                    SetCaretToLineStart() { SetCaretAndGoalPosition(SetupPoint(0, GetCaretPosition().y)); }
 106         void                    EnsureCaretVisible();
 107         void                    UpdateCaret();
 108
 109         bool                    ArePointsSame(const POINT &pt1, const POINT &pt2) {return (pt1.x == pt2.x) && (pt1.y == pt2.y); };
 110         POINT                   SetupPoint(int x, int y) {POINT ptRet={x, y}; return ptRet; };
 111         POINT                   ConvertScreenPosToView(const POINT& pt);
 112         POINT                   ConvertViewPosToScreen(const POINT& pt);
 113
 114         void                    RefreshViews();
 115         static void             BuildAllScreen2ViewVector();                                                            ///< schedule full screen2view rebuild
 116         static void             BuildAllScreen2ViewVector(int ViewLine);                                        ///< schedule rebuild screen2view for single line
 117         static void             BuildAllScreen2ViewVector(int FirstViewLine, int LastViewLine); ///< schedule rebuild screen2view for line range (first and last inclusive)
 118         void                    UpdateViewLineNumbers();
 119         int                             CleanEmptyLines();                                                                                      ///< remove line empty in all views
 120         int                             GetLineCount() const;
 121         static int              GetViewLineForScreen(int screenLine) { return m_Screen2View.GetViewLineForScreen(screenLine); }
 122         int                             FindScreenLineForViewLine(int viewLine);
 123         // TODO: find better consistent names for Multiline(line with sublines) and Subline, Count.. or Get..Count ?
 124         int                             CountMultiLines(int nViewLine);
 125         int                             GetSubLineOffset(int index);
 126         LineColors &    GetLineColors(int nViewLine);
 127         static void             UpdateLocator() { if (m_pwndLocator) m_pwndLocator->DocumentUpdated(); }
 128         void                    WrapChanged();
 129
 130         void                    HighlightLines(int start, int end = -1);
 131         void                    HighlightViewLines(int start, int end = -1);
 132         inline BOOL             IsHidden() const  {return m_bIsHidden;}
 133         inline void             SetHidden(BOOL bHidden) {m_bIsHidden = bHidden;}
 134         inline bool             IsModified() const  {return m_bModified;}
 135         void                    SetModified(bool bModified = true) { m_bModified = bModified; m_pState->modifies |= bModified; Invalidate(); }
 136         bool                    HasMarkedBlocks() const { return m_pViewData->HasMarkedBlocks(); }
 137         void                    ClearStepModifiedMark() { m_pState->modifies = false; }
 138         void                    SetInlineWordDiff(bool bWord) {m_bInlineWordDiff = bWord;}
 139         void                    SetInlineDiff(bool bDiff) {m_bShowInlineDiff = bDiff;}
 140         void                    SetMarkedWord(const CString& word) {m_sMarkedWord = word; BuildMarkedWordArray();}
 141         LPCTSTR                 GetMarkedWord() {return (LPCTSTR)m_sMarkedWord;}
 142         LPCTSTR                 GetFindString() {return (LPCTSTR)m_sFindText;}
 143
 144         // Selection methods; all public methods dealing with selection go here
 145         static void             ClearSelection();
 146         BOOL                    GetViewSelection(int& start, int& end) const;
 147         BOOL                    HasSelection() const { return (!((m_nSelViewBlockEnd < 0)||(m_nSelViewBlockStart < 0)||(m_nSelViewBlockStart > m_nSelViewBlockEnd))); }
 148         BOOL                    HasTextSelection() const { return ((m_ptSelectionViewPosStart.x != m_ptSelectionViewPosEnd.x) || (m_ptSelectionViewPosStart.y != m_ptSelectionViewPosEnd.y)); }
 149         BOOL                    HasTextLineSelection() const { return m_ptSelectionViewPosStart.y != m_ptSelectionViewPosEnd.y; }
 150         static void             SetupAllViewSelection(int start, int end);
 151         static void             SetupAllSelection(int start, int end);
 152         void                    SetupSelection(int start, int end);
 153         static void             SetupViewSelection(CBaseView* view, int start, int end);
 154         void                    SetupViewSelection(int start, int end);
 155         CString                 GetSelectedText() const;
 156         void                    CheckModifications(bool& hasMods, bool& hasConflicts, bool& hasWhitespaceMods);
 157
 158         // state classifying methods; note: state may belong to more classes
 159         static bool             IsStateConflicted(DiffStates state);
 160         static bool             IsStateEmpty(DiffStates state);
 161         static bool             IsStateRemoved(DiffStates state);
 162         static DiffStates       ResolveState(DiffStates state);
 163
 164         bool                    IsLineEmpty(int nLineIndex);
 165         bool                    IsViewLineEmpty(int nViewLine);
 166         bool                    IsLineRemoved(int nLineIndex);
 167         bool                    IsViewLineRemoved(int nViewLine);
 168         bool                    IsBlockWhitespaceOnly(int nLineIndex, bool& bIdentical, int& blockstart, int& blockend);
 169         bool                    IsViewLineConflicted(int nLineIndex);
 170         bool                    HasNextConflict();
 171         bool                    HasPrevConflict();
 172         bool                    HasNextDiff();
 173         bool                    HasPrevDiff();
 174         bool                    GetNextInlineDiff(int & nPos);
 175         bool                    GetPrevInlineDiff(int & nPos);
 176         bool                    HasNextInlineDiff();
 177         bool                    HasPrevInlineDiff();
 178
 179         static const viewdata& GetEmptyLineData();
 180         void                    InsertViewEmptyLines(int nFirstView, int nCount);
 181
 182         virtual void    UseBothLeftFirst() {return UseBothBlocks(m_pwndLeft, m_pwndRight); }
 183         virtual void    UseBothRightFirst() {return UseBothBlocks(m_pwndRight, m_pwndLeft); }
 184         void                    UseTheirAndYourBlock() {return UseBothLeftFirst(); } ///< ! for backward compatibility
 185         void                    UseYourAndTheirBlock() {return UseBothRightFirst(); } ///< ! for backward compatibility
 186
 187         virtual void    UseLeftBlock() {return UseViewBlock(m_pwndLeft); }
 188         virtual void    UseLeftFile() {return UseViewFile(m_pwndLeft); }
 189         virtual void    UseRightBlock() {return UseViewBlock(m_pwndRight); }
 190         virtual void    UseRightFile() {return UseViewFile(m_pwndRight); }
 191         virtual void    LeaveOnlyMarkedBlocks() { return LeaveOnlyMarkedBlocks(m_pwndLeft); }
 192         virtual void    UseViewFileOfMarked() { UseViewFileOfMarked(m_pwndLeft); }
 193         virtual void    UseViewFileExceptEdited() { UseViewFileExceptEdited(m_pwndLeft); }
 194
 195         // ViewData methods
 196         void                    InsertViewData(int index, const CString& sLine, DiffStates state, int linenumber, EOL ending, HIDESTATE hide, int movedline);
 197         void                    InsertViewData(int index, const viewdata& data);
 198         void                    RemoveViewData(int index);
 199
 200         const viewdata& GetViewData(int index) const {return m_pViewData->GetData(index); }
 201         const CString&  GetViewLine(int index) const {return m_pViewData->GetLine(index); }
 202         DiffStates              GetViewState(int index) const {return m_pViewData->GetState(index); }
 203         HIDESTATE               GetViewHideState(int index) {return m_pViewData->GetHideState(index); }
 204         int                             GetViewLineNumber(int index) {return m_pViewData->GetLineNumber(index); }
 205         int                             GetViewMovedIndex(int index) {return m_pViewData->GetMovedIndex(index); }
 206         int                             FindViewLineNumber(int number) {return m_pViewData->FindLineNumber(number); }
 207         EOL                             GetViewLineEnding(int index) const {return m_pViewData->GetLineEnding(index); }
 208         bool                    GetViewMarked(int index) const {return m_pViewData->GetMarked(index); }
 209
 210         int                             GetViewCount() const {return m_pViewData ? m_pViewData->GetCount() : -1; }
 211
 212         void                    SetViewData(int index, const viewdata& data);
 213         void                    SetViewState(int index, DiffStates state);
 214         void                    SetViewLine(int index, const CString& sLine);
 215         void                    SetViewLineNumber(int index, int linenumber);
 216         void                    SetViewLineEnding(int index, EOL ending);
 217         void                    SetViewMarked(int index, bool marked);
 218
 219         static bool             IsViewGood(const CBaseView* view ) { return (view != 0) && view->IsWindowVisible(); }
 220         static CBaseView * GetFirstGoodView();
 221
 222         int                             GetIndentCharsForLine(int x, int y);
 223         void                    AddIndentationForSelectedBlock();
 224         void                    RemoveIndentationForSelectedBlock();
 225         void                    ConvertTabToSpaces();
 226         void                    Tabularize();
 227         void                    RemoveTrailWhiteChars();
 228
 229         struct TWhitecharsProperties
 230         {
 231                 bool HasMixedEols;
 232                 bool HasTrailWhiteChars;
 233                 bool HasSpacesToConvert;
 234                 bool HasTabsToConvert;
 235         };
 236
 237         TWhitecharsProperties   GetWhitecharsProperties();
 238
 239 public: // variables
 240         CViewData *             m_pViewData;
 241         CViewData *             m_pOtherViewData;
 242         CBaseView *             m_pOtherView;
 243
 244         CString                 m_sWindowName;          ///< The name of the view which is shown as a window title to the user
 245         CString                 m_sFullFilePath;        ///< The full path of the file shown
 246         CString                 m_sConvertedFilePath;   ///< the path to the converted file that's shown in the view
 247         CString                 m_sReflectedName;       ///< The reflected name of file
 248
 249         BOOL                    m_bViewWhitespace;      ///< If TRUE, then SPACE and TAB are shown as special characters
 250         BOOL                    m_bShowInlineDiff;      ///< If TRUE, diffs in lines are marked colored
 251         bool                    m_bShowSelection;       ///< If true, selection bars are shown and selected text darkened
 252         bool                    m_bWhitespaceInlineDiffs; ///< if true, inline diffs are shown for identical lines only differing in whitespace
 253         int                             m_nTopLine;                     ///< The topmost text line in the view
 254         std::vector<int> m_arMarkedWordLines;   ///< which lines contain a marked word
 255         std::vector<int> m_arFindStringLines;   ///< which lines contain a found string
 256
 257         static CLocatorBar * m_pwndLocator;     ///< Pointer to the locator bar on the left
 258         static CLineDiffBar * m_pwndLineDiffBar;        ///< Pointer to the line diff bar at the bottom
 259         static CMFCStatusBar * m_pwndStatusBar;///< Pointer to the status bar
 260         static CMFCRibbonStatusBar * m_pwndRibbonStatusBar;///< Pointer to the status bar
 261         static CMainFrame * m_pMainFrame;       ///< Pointer to the mainframe
 262
 263         int                             m_nTabMode;
 264         bool                    m_bEditorConfigEnabled;
 265         BOOL                    m_bEditorConfigLoaded;
 266
 267         void                    GoToFirstDifference();
 268         void                    GoToFirstConflict();
 269         void                    AddEmptyViewLine(int nLineIndex);
 270 #define SAVE_REMOVEDLINES 1
 271         int                             SaveFile(int Flags = 0);
 272         int                             SaveFileTo(CString FileName, int Flags = 0);
 273
 274         EOL                             GetLineEndings();                                                                                       ///< Get Line endings on view from lineendings or "mixed"
 275         EOL                             GetLineEndings(bool MixelEols);
 276         void                    ReplaceLineEndings(EOL);                                                                        ///< Set AUTO lineending and replaces all EOLs
 277         void                    SetLineEndingStyle(EOL);                                                                        ///< Set AUTO lineending
 278         UnicodeType             GetTextType() { return m_texttype; }
 279         void                    SetTextType(UnicodeType);                                                                       ///< Changes TextType
 280         void                    AskUserForNewLineEndingsAndTextType(int);                                       ///< Open gui
 281         int                             GetTabMode() { return m_nTabMode; }
 282         void                    SetTabMode(int nTabMode) { m_nTabMode = nTabMode; }
 283         int                             GetTabSize() { return m_nTabSize; }
 284         void                    SetTabSize(int nTabSize) { m_nTabSize = nTabSize; }
 285         bool                    GetEditorConfigEnabled() { return m_bEditorConfigEnabled; }
 286         void                    SetEditorConfigEnabled(bool bEditorConfigEnabled);
 287         BOOL                    GetEditorConfigLoaded() { return m_bEditorConfigLoaded; }
 288
 289         CWorkingFile * m_pWorkingFile; ///< pointer to source/destination file parametrers
 290
 291 protected:  // methods
 292         enum {
 293                 MOVERIGHT =0,
 294                 MOVELEFT = 1,
 295         };
 296
 297         virtual BOOL    PreCreateWindow(CREATESTRUCT& cs);
 298         virtual void    OnDraw(CDC * pDC);
 299         virtual INT_PTR OnToolHitTest(CPoint point, TOOLINFO* pTI) const;
 300         virtual BOOL    PreTranslateMessage(MSG* pMsg);
 301         BOOL                    OnToolTipNotify(UINT id, NMHDR *pNMHDR, LRESULT *pResult);
 302         afx_msg void    OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
 303         afx_msg void    OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar);
 304         afx_msg BOOL    OnEraseBkgnd(CDC* pDC);
 305         afx_msg int     OnCreate(LPCREATESTRUCT lpCreateStruct);
 306         afx_msg void    OnDestroy();
 307         afx_msg void    OnSize(UINT nType, int cx, int cy);
 308         afx_msg BOOL    OnMouseWheel(UINT nFlags, short zDelta, CPoint pt);
 309         afx_msg void    OnMouseHWheel(UINT nFlags, short zDelta, CPoint pt);
 310         afx_msg BOOL    OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message);
 311         afx_msg void    OnKillFocus(CWnd* pNewWnd);
 312         afx_msg void    OnSetFocus(CWnd* pOldWnd);
 313         afx_msg void    OnContextMenu(CWnd* pWnd, CPoint point);
 314         afx_msg void    OnMergeNextdifference();
 315         afx_msg void    OnMergePreviousdifference();
 316         afx_msg void    OnMergePreviousconflict();
 317         afx_msg void    OnMergeNextconflict();
 318         afx_msg void    OnNavigateNextinlinediff();
 319         afx_msg void    OnNavigatePrevinlinediff();
 320         afx_msg void    OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags);
 321         afx_msg void    OnLButtonDown(UINT nFlags, CPoint point);
 322         afx_msg void    OnLButtonUp(UINT nFlags, CPoint point);
 323         afx_msg void    OnLButtonDblClk(UINT nFlags, CPoint point);
 324         virtual void    OnLButtonTrippleClick(UINT nFlags, CPoint point) override;
 325         afx_msg void    OnEditCopy();
 326         afx_msg void    OnMouseMove(UINT nFlags, CPoint point);
 327         afx_msg void    OnTimer(UINT_PTR nIDEvent);
 328         afx_msg void    OnChar(UINT nChar, UINT nRepCnt, UINT nFlags);
 329         afx_msg void    OnCaretDown();
 330         afx_msg void    OnCaretLeft();
 331         afx_msg void    OnCaretRight();
 332         afx_msg void    OnCaretUp();
 333         afx_msg void    OnCaretWordleft();
 334         afx_msg void    OnCaretWordright();
 335         afx_msg void    OnEditCut();
 336         afx_msg void    OnEditPaste();
 337         afx_msg void    OnEditSelectall();
 338         afx_msg LRESULT OnFindDialogMessage(WPARAM wParam, LPARAM lParam);
 339         afx_msg void    OnEditFind();
 340         afx_msg void    OnEditFindnext();
 341         afx_msg void    OnEditFindprev();
 342         afx_msg void    OnEditFindnextStart();
 343         afx_msg void    OnEditFindprevStart();
 344         afx_msg void    OnEditGotoline();
 345         afx_msg void    OnToggleReadonly();
 346
 347         DECLARE_MESSAGE_MAP()
 348
 349         void                    DrawHeader(CDC *pdc, const CRect &rect);
 350         void                    DrawMargin(CDC *pdc, const CRect &rect, int nLineIndex);
 351         void                    DrawSingleLine(CDC *pDC, const CRect &rc, int nLineIndex);
 352         /**
 353          * Draws the horizontal lines around current diff block or selection block.
 354          */
 355         void                    DrawBlockLine(CDC *pDC, const CRect &rc, int nLineIndex);
 356         /**
 357          * Draws the line ending 'char'.
 358          */
 359         void                    DrawLineEnding(CDC *pDC, const CRect &rc, int nLineIndex, const CPoint& origin);
 360         void                    ExpandChars(const CString &sLine, int nOffset, int nCount, CString &line);
 361         CString                 ExpandChars(const CString &sLine, int nOffset = 0);
 362         int                             CountExpandedChars(const CString &sLine, int nLength);
 363
 364         void                    RecalcVertScrollBar(BOOL bPositionOnly = FALSE);
 365         void                    RecalcHorzScrollBar(BOOL bPositionOnly = FALSE);
 366
 367         void                    OnDoMouseWheel(UINT nFlags, short zDelta, CPoint pt);
 368         void                    OnDoMouseHWheel(UINT nFlags, short zDelta, CPoint pt);
 369         void                    OnDoHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar, CBaseView * master);
 370         void                    OnDoVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar, CBaseView * master);
 371
 372         void                    ShowDiffLines(int nLine);
 373
 374         int                             GetTabSize() const {return m_nTabSize;}
 375         void                    DeleteFonts();
 376
 377         void                    CalcLineCharDim();
 378         int                             GetLineHeight();
 379         int                             GetCharWidth();
 380         int                             GetMaxLineLength();
 381         int                             GetLineLength(int index);
 382         int                             GetLineLengthWithTabsConverted(int index);
 383         int                             GetViewLineLength(int index) const;
 384         int                             GetScreenChars();
 385         int                             GetAllMinScreenChars() const;
 386         int                             GetAllMaxLineLength() const;
 387         int                             GetAllLineCount() const;
 388         int                             GetAllMinScreenLines() const;
 389         CString                 GetViewLineChars(int index) const;
 390         CString                 GetLineChars(int index);
 391         int                             GetLineNumber(int index) const;
 392         CFont *                 GetFont(BOOL bItalic = FALSE, BOOL bBold = FALSE);
 393         int                             GetLineFromPoint(CPoint point);
 394         int                             GetMarginWidth();
 395         COLORREF                InlineDiffColor(int nLineIndex);
 396         COLORREF                InlineViewLineDiffColor(int nLineIndex);
 397         bool                    GetInlineDiffPositions(int lineIndex, std::vector<inlineDiffPos>& positions);
 398         void                    CheckOtherView();
 399         void                    GetWhitespaceBlock(CViewData *viewData, int nLineIndex, int & nStartBlock, int & nEndBlock);
 400         CString                 GetWhitespaceString(CViewData *viewData, int nStartBlock, int nEndBlock);
 401         bool                    IsViewLineHidden(int nViewLine);
 402         static bool             IsViewLineHidden(CViewData * pViewData, int nViewLine);
 403
 404         void                    OnContextMenu(CPoint point, DiffStates state);
 405         /**
 406          * Updates the status bar pane. Call this if the document changed.
 407          */
 408         void                    UpdateStatusBar();
 409
 410         static bool             IsLeftViewGood() {return IsViewGood(m_pwndLeft);}
 411         static bool             IsRightViewGood() {return IsViewGood(m_pwndRight);}
 412         static bool             IsBottomViewGood() {return IsViewGood(m_pwndBottom);}
 413
 414         int                             CalculateActualOffset(const POINT& point);
 415         int                             CalculateCharIndex(int nLineIndex, int nActualOffset);
 416         int                             CalcColFromPoint(int xpos, int lineIndex);
 417         POINT                   TextToClient(const POINT& point);
 418         void                    DrawTextLine(CDC * pDC, const CRect &rc, int nLineIndex, POINT& coords);
 419         void                    ClearCurrentSelection();
 420         void                    AdjustSelection(bool bMoveLeft);
 421         bool                    SelectNextBlock(int nDirection, bool bConflict, bool bSkipEndOfCurrentBlock = true, bool dryrun = false);
 422
 423         enum                    SearchDirection{SearchNext=0, SearchPrevious=1};
 424         bool                    StringFound(const CString& str, SearchDirection srchDir, int& start, int& end) const;
 425         bool                    Search(SearchDirection srchDir, bool useStart, bool flashIfNotFound, bool stopEof);
 426         void                    BuildFindStringArray();
 427
 428         void                    RemoveLine(int nLineIndex);
 429         void                    RemoveSelectedText();
 430         void                    PasteText();
 431         void                    InsertText(const CString& sText);
 432         void                    AddUndoViewLine(int nViewLine, bool bAddEmptyLine = false);
 433
 434         bool                    MoveCaretLeft();
 435         bool                    MoveCaretRight();
 436         void                    MoveCaretWordLeft();
 437         void                    MoveCaretWordRight();
 438         void                    OnCaretMove(bool bMoveLeft);
 439         void                    OnCaretMove(bool bMoveLeft, bool isShiftPressed);
 440         void                    UpdateGoalPos();
 441
 442         ECharGroup              GetCharGroup(const CString &str, int index) const { return index >= 0 && index < str.GetLength() ? GetCharGroup(str[index]) : CHG_UNKNOWN; }
 443         ECharGroup              GetCharGroup(const wchar_t zChar) const;
 444         bool                    IsWordSeparator(const wchar_t ch) const;
 445         bool                    IsCaretAtWordBoundary();
 446         void                    UpdateViewsCaretPosition();
 447         void                    BuildMarkedWordArray();
 448
 449         virtual void    UseBothBlocks(CBaseView * /*pwndFirst*/, CBaseView * /*pwndLast*/) {};
 450         virtual void    UseViewBlock(CBaseView * /*pwndView*/) {}
 451         void                    UseViewBlock(CBaseView * pwndView, int nFirstViewLine, int nLastViewLine, std::function<bool(int)> fnSkip = [] (int) -> bool { return false; });
 452         virtual void    UseViewFile(CBaseView * /*pwndView*/) {}
 453         virtual void    MarkBlock(bool /*marked*/) {}
 454         void                    MarkBlock(bool marked, int nFirstViewLine, int nLastViewLine);
 455         void                    LeaveOnlyMarkedBlocks(CBaseView *pwndView);
 456         void                    UseViewFileOfMarked(CBaseView *pwndView);
 457         void                    UseViewFileExceptEdited(CBaseView *pwndView);
 458
 459         virtual void    AddContextItems(CIconMenu& popup, DiffStates state);
 460         void                    AddCutCopyAndPaste(CIconMenu& popup);
 461         void                    CompensateForKeyboard(CPoint& point);
 462         static HICON    LoadIcon(WORD iconId);
 463         void                    ReleaseBitmap();
 464         static bool             LinesInOneChange( int direction, DiffStates firstLineState, DiffStates currentLineState );
 465         static void             FilterWhitespaces(CString& first, CString& second);
 466         static void             FilterWhitespaces(CString& line);
 467         int                             GetButtonEventLineIndex(const POINT& point);
 468
 469         static void             ResetUndoStep();
 470         void                    SaveUndoStep();
 471 protected:  // variables
 472         COLORREF                m_InlineRemovedBk;
 473         COLORREF                m_InlineAddedBk;
 474         COLORREF                m_ModifiedBk;
 475         COLORREF                m_WhiteSpaceFg;
 476         UINT                    m_nStatusBarID;         ///< The ID of the status bar pane used by this view. Must be set by the parent class.
 477
 478         SVNLineDiff             m_svnlinediff;
 479         DWORD                   m_nInlineDiffMaxLineLength;
 480         BOOL                    m_bOtherDiffChecked;
 481         bool                    m_bModified;
 482         BOOL                    m_bFocused;
 483         BOOL                    m_bViewLinenumbers;
 484         BOOL                    m_bIsHidden;
 485         BOOL                    m_bIconLFs;
 486         int                             m_nLineHeight;
 487         int                             m_nCharWidth;
 488         int                             m_nMaxLineLength;
 489         int                             m_nScreenLines;
 490         int                             m_nScreenChars;
 491         int                             m_nLastScreenChars;
 492         int                             m_nOffsetChar;
 493         int                             m_nTabSize;
 494         int                             m_nDigits;
 495         bool                    m_bInlineWordDiff;
 496
 497         // Block selection attributes
 498         int                             m_nSelViewBlockStart;
 499         int                             m_nSelViewBlockEnd;
 500
 501         int                             m_nMouseLine;
 502         bool                    m_mouseInMargin;
 503         HCURSOR                 m_margincursor;
 504
 505         // caret
 506         bool                    m_bReadonly;
 507         bool                    m_bReadonlyIsChangable;
 508         bool                    m_bTarget;                                              ///< view intended as result
 509         POINT                   m_ptCaretViewPos;
 510         int                             m_nCaretGoalPos;
 511
 512         // Text selection attributes
 513         POINT                   m_ptSelectionViewPosStart;
 514         POINT                   m_ptSelectionViewPosEnd;
 515         POINT                   m_ptSelectionViewPosOrigin;
 516
 517         static const UINT m_FindDialogMessage;
 518         CFindDlg *              m_pFindDialog;
 519         CString                 m_sFindText;
 520         BOOL                    m_bMatchCase;
 521         bool                    m_bLimitToDiff;
 522         bool                    m_bWholeWord;
 523
 524
 525         HICON                   m_hAddedIcon;
 526         HICON                   m_hRemovedIcon;
 527         HICON                   m_hConflictedIcon;
 528         HICON                   m_hConflictedIgnoredIcon;
 529         HICON                   m_hWhitespaceBlockIcon;
 530         HICON                   m_hEqualIcon;
 531         HICON                   m_hEditedIcon;
 532
 533         HICON                   m_hLineEndingCR;
 534         HICON                   m_hLineEndingCRLF;
 535         HICON                   m_hLineEndingLF;
 536
 537         HICON                   m_hMovedIcon;
 538         HICON                   m_hMarkedIcon;
 539
 540         LOGFONT                 m_lfBaseFont;
 541         static const int fontsCount = 4;
 542         CFont *                 m_apFonts[fontsCount];
 543         CString                 m_sConflictedText;
 544         CString                 m_sNoLineNr;
 545         CString                 m_sMarkedWord;
 546         CString                 m_sPreviousMarkedWord;
 547
 548         CBitmap *               m_pCacheBitmap;
 549         CDC *                   m_pDC;
 550         CScrollTool             m_ScrollTool;
 551         CString                 m_sWordSeparators;
 552         CString                 m_Eols[EOL__COUNT];
 553
 554         UnicodeType             m_texttype;             ///< the text encoding this view uses
 555         EOL                             m_lineendings;  ///< the line endings the view uses
 556         bool                    m_bInsertMode;
 557
 558         char                    m_szTip[MAX_PATH*2+1];
 559         wchar_t                 m_wszTip[MAX_PATH*2+1];
 560         // These three pointers lead to the three parent
 561         // classes CLeftView, CRightView and CBottomView
 562         // and are used for the communication between
 563         // the views (e.g. synchronized scrolling, ...)
 564         // To find out which parent class this object
 565         // is made of just compare e.g. (m_pwndLeft==this).
 566         static CBaseView * m_pwndLeft;          ///< Pointer to the left view. Must be set by the CLeftView parent class.
 567         static CBaseView * m_pwndRight;         ///< Pointer to the right view. Must be set by the CRightView parent class.
 568         static CBaseView * m_pwndBottom;        ///< Pointer to the bottom view. Must be set by the CBottomView parent class.
 569
 570         struct TScreenLineInfo
 571         {
 572                 int nViewLine;
 573                 int nViewSubLine;
 574         };
 575         class TScreenedViewLine
 576         {
 577          public:
 578                 TScreenedViewLine()
 579                 {
 580                         Clear();
 581                 }
 582
 583                 void Clear()
 584                 {
 585                         bSublinesSet = false;
 586                         eIcon = ICN_UNKNOWN;
 587                         bLineColorsSet = false;
 588                         bLineColorsSetWhiteSpace = false;
 589                 }
 590
 591                 bool bSublinesSet;
 592                 std::vector<CString> SubLines;
 593
 594                 enum EIcon
 595                 {
 596                         ICN_UNKNOWN,
 597                         ICN_NONE,
 598                         ICN_EDIT,
 599                         ICN_SAME,
 600                         ICN_WHITESPACEDIFF,
 601                         ICN_ADD,
 602                         ICN_REMOVED,
 603                         ICN_MOVED,
 604                         ICN_MARKED,
 605                         ICN_CONFLICT,
 606                         ICN_CONFLICTIGNORED,
 607                 } eIcon;
 608
 609                 bool bLineColorsSetWhiteSpace;
 610                 LineColors lineColorsWhiteSpace;
 611                 bool bLineColorsSet;
 612                 LineColors lineColors;
 613         };
 614         std::vector<TScreenedViewLine> m_ScreenedViewLine; ///< cached data for screening
 615
 616         static allviewstate m_AllState;
 617         viewstate *             m_pState;
 618
 619         enum PopupCommands
 620         {
 621                 POPUPCOMMAND_DISMISSED = 0,
 622                 // 2-pane view commands
 623                 POPUPCOMMAND_USELEFTBLOCK,
 624                 POPUPCOMMAND_USELEFTFILE,
 625                 POPUPCOMMAND_USEBOTHLEFTFIRST,
 626                 POPUPCOMMAND_USEBOTHRIGHTFIRST,
 627                 POPUPCOMMAND_MARKBLOCK,
 628                 POPUPCOMMAND_UNMARKBLOCK,
 629                 POPUPCOMMAND_LEAVEONLYMARKEDBLOCKS,
 630                 // multiple writable views
 631                 POPUPCOMMAND_PREPENDFROMRIGHT,
 632                 POPUPCOMMAND_REPLACEBYRIGHT,
 633                 POPUPCOMMAND_APPENDFROMRIGHT,
 634                 POPUPCOMMAND_USERIGHTFILE,
 635                 // 3-pane view commands
 636                 POPUPCOMMAND_USEYOURANDTHEIRBLOCK,
 637                 POPUPCOMMAND_USETHEIRANDYOURBLOCK,
 638                 POPUPCOMMAND_USEYOURBLOCK,
 639                 POPUPCOMMAND_USEYOURFILE,
 640                 POPUPCOMMAND_USETHEIRBLOCK,
 641                 POPUPCOMMAND_USETHEIRFILE,
 642                 // others
 643                 POPUPCOMMAND_TABTOSPACES,
 644                 POPUPCOMMAND_SPACESTOTABS,
 645                 POPUPCOMMAND_REMOVETRAILWHITES,
 646
 647                 POPUPCOMMAND__LAST,
 648         };
 649
 650         class Screen2View
 651         {
 652         public:
 653                 Screen2View()
 654                         : m_pViewData(nullptr)
 655                 {m_bFull=false; }
 656
 657                 int                             GetViewLineForScreen(int screenLine);
 658                 int                             GetSubLineOffset(int screenLine);
 659                 TScreenLineInfo GetScreenLineInfo(int screenLine);
 660                 int                             FindScreenLineForViewLine(int viewLine);
 661                 void                    ScheduleFullRebuild(CViewData * ViewData);
 662                 void                    ScheduleRangeRebuild(CViewData * ViewData, int FirstViewLine, int LastViewLine);
 663                 int                             size();
 664
 665         private:
 666                 struct TRebuildRange
 667                 {
 668                         int FirstViewLine;
 669                         int LastViewLine;
 670                 };
 671
 672                 bool                    FixScreenedCacheSize(CBaseView* View);
 673                 void                    RebuildIfNecessary();
 674                 bool                    ResetScreenedViewLineCache(CBaseView* View) const;
 675                 bool                    ResetScreenedViewLineCache(CBaseView* View, const TRebuildRange& Range) const;
 676
 677                 CViewData *                                             m_pViewData;
 678                 bool                                                    m_bFull;
 679                 std::vector<TScreenLineInfo>    m_Screen2View;
 680                 std::vector<TRebuildRange>              m_RebuildRanges;
 681         };
 682
 683         static Screen2View m_Screen2View;
 684         CFileTextLines::SaveParams m_SaveParams; ///< encoding and new line style for saving
 685 };