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1317 lines
42 KiB
1317 lines
42 KiB
/*
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* @doc INTERNAL
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*
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* @module FRUNPTR.C -- FormatRunPtr methods |
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*
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* common code to handle character and paragraph format runs
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*
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* Original Authors: <nl>
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* Original RichEdit 1.0 code: David R. Fulmer <nl>
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* Christian Fortini <nl>
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* Murray Sargent <nl>
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*
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* History:
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* 6/25/95 alexgo convert to use Auto-Doc and simplified backing
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* store model
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*
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* @devnote
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* BOR and EOR mean Beginning Of Run and End Of Run, respectively
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*
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* Copyright (c) 1995-1998, Microsoft Corporation. All rights reserved.
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*/
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#include "_common.h"
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#include "_edit.h"
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#include "_frunptr.h"
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#include "_rtext.h"
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#include "_font.h"
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ASSERTDATA
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//
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// Invariant stuff
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//
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#define DEBUG_CLASSNAME CFormatRunPtr
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#include "_invar.h"
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#ifdef DEBUG
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/*
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* CFormatRunPtr::Invariant
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*
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* @mfunc Invariant for format run pointers
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*
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* @rdesc BOOL
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*/
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BOOL CFormatRunPtr::Invariant() const
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{
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if(IsValid())
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{
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CFormatRun *prun = GetRun(0);
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if(prun && _iRun)
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{
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Assert(prun->_cch > 0);
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}
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}
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else
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{
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Assert(_ich == 0);
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}
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return CRunPtrBase::Invariant();
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}
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#endif
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/*
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* CFormatRunPtr::InitRuns(ich, cch, iFormat, ppfrs)
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*
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* @mfunc
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* Setup this format run ptr for rich-text operation, namely,
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* allocate CArray<lt>CFormatRun<gt> if not allocated, assign it to this
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* run ptr's _pRuns, add initial run if no runs are present, and store
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* initial cch and ich
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*
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* @rdesc
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* TRUE if succeeds
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*/
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BOOL CFormatRunPtr::InitRuns(
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LONG ich, //@parm # chars in initial run
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LONG cch, //@parm char offset in initial run
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CFormatRuns **ppfrs) //@parm ptr to CFormatRuns ptr
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{
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TRACEBEGIN(TRCSUBSYSBACK, TRCSCOPEINTERN, "CFormatRunPtr::InitRuns");
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_TEST_INVARIANT_
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AssertSz( ppfrs,
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"FRP::InitRuns: illegal ptr to runs");
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AssertSz( !IsValid(),
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"FRP::InitRuns: ptr already valid");
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if(!*ppfrs) // Allocate format runs
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{
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_pRuns = (CRunArray *) new CFormatRuns();
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if(!_pRuns)
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goto NoRAM;
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*ppfrs = (CFormatRuns *)_pRuns;
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}
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else // Format runs already alloc'd
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_pRuns = (CRunArray *)*ppfrs; // Cache ptr to runs
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if(!Count()) // No runs yet, so add one
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{
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CFormatRun *pRun= Add(1, NULL);
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if(!pRun)
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goto NoRAM;
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#ifdef DEBUG
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PvSet(*(void**)_pRuns);
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#endif
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_ich = ich;
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ZeroMemory(pRun, sizeof(*pRun));
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pRun->_cch = cch; // Define its _cch
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pRun->_iFormat = -1; // and _iFormat
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}
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else
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BindToCp(ich); // Format runs are in place
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return TRUE;
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NoRAM:
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TRACEERRSZSC("CFormatRunPtr::InitRuns: Out Of RAM", E_OUTOFMEMORY);
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return FALSE;
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}
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/*
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* CFormatRunPtr::Delete(cch, pf, cchMove)
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*
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* @mfunc
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* Delete/modify runs starting at this run ptr up to cch chars. <nl>
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* There are 7 possibilities: <nl>
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* 1. cch comes out of this run with count left over, i.e.,
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* cch <lt>= (*this)->_cch - _ich && (*this)->_cch > cch
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* (simple: no runs deleted/merged, just subtract cch) <nl>
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* 2. cch comes out of this run and empties run and doc
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* (simple: no runs left to delete/merge) <nl>
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* 3. cch comes out of this run and empties run, which is last
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* (need to delete run, no merge possibility) <nl>
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* 4. cch comes out of this run and empties run, which is first
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* (need to delete run, no merge possibility) <nl>
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* 5. cch exceeds count available in this run and this run is last
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* (simple: treat as 3.) <nl>
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* 6. cch comes out of this run and empties run with runs before
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* and after (need to delete run; merge possibility) <nl>
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* 7. cch comes partly out of this run and partly out of later run(s)
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* (may need to delete and merge) <nl>
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*
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* @comm
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* PARAFORMATs have two special cases that use the cchMove argument set
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* up in CRchTxtPtr::ReplaceRange().
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*/
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void CFormatRunPtr::Delete(
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LONG cch, //@parm # chars to modify format runs for
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IFormatCache *pf, //@parm IFormatCache ptr for ReleaseFormat
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LONG cchMove) //@parm cch to move between runs (always 0 for CF)
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{
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TRACEBEGIN(TRCSUBSYSBACK, TRCSCOPEINTERN, "CFormatRunPtr::Delete");
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_TEST_INVARIANT_
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// We should not have any boundary cases for empty or NULL pointers.
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// (i.e. if there's no text, then nobody should be calling delete).
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Assert(IsValid());
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LONG cchEnd = 0; // Probably unnecessary: see below
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LONG cRun = 1;
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BOOL fLast = (_iRun == Count() - 1);
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LONG ifmtEnd, ifmtStart;
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CFormatRun * pRun = Elem(_iRun);
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CFormatRun * pRunRp;
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LONG cchChunk = pRun->_cch - _ich;
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CFormatRunPtr rp(*this); // Clone this run ptr
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CBiDiLevel levelStart = {0,0};
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CBiDiLevel levelEnd = {0,0};
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rp.AdjustBackward(); // If at BOR, move to prev EOR
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ifmtStart = rp.GetRun(0)->_iFormat; // to get start format
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levelStart = rp.GetRun(0)->_level; // and level
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rp = *this; // In case RpAdjustCp() backed up
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// Process deletes confined to this run first, since their logic tends to
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// clutter up other cases
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AssertSz(cch >= 0, "FRP::Delete: cch < 0");
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if(fLast) // Handle oversized cch on last
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cch = min(cch, cchChunk); // run here
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if(cch <= cchChunk) // cch comes out of this run
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{
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pRun->_cch -= cch;
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Assert(pRun->_cch >= 0);
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if(cchMove) // If nonzero here, we are
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{ // deleting EOP at end of run
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rp.AdjustForward(); // Adjust rp to beginning of
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goto move; // next run and go move cchMove
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} // chars back into this run
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if(pRun->_cch) // Something left in run: done
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return;
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// Note: _ich = 0
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if(!_iRun || fLast) // This run is either first
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{ // or last
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AdjustBackward(); // If last, go to prev EOR
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if(_ich) // This run is empty so delete
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cRun++; // Compensate for cRun-- coming up
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ifmtStart = -2; // No runs eligible for merging
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} // so use unmatchable ifmtStart
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rp.NextRun(); // Set up to get next _iFormat
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}
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else
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{
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rp.AdvanceCp(cch); // Move clone to end of delete
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pRunRp = rp.GetRun(0);
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cRun = rp._iRun - _iRun // If at EOR, then need to add
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+ (rp._ich == pRunRp->_cch); // one more run to delete
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pRun->_cch = _ich; // Shorten this run to _ich chars
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pRunRp->_cch -= rp._ich; // Shorten last run by rp._ich
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rp._ich = 0;
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Assert(pRunRp->_cch >= 0);
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AssertSz(cRun > 0, "FRP: bogus runptr");
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if(!_iRun) // First run?
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ifmtStart = -2; // Then we cannot merge runs so
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} // set to unmergable format
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ifmtEnd = -3; // Default invalid format at end
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if(rp.IsValid())
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{
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// FUTURE (murrays): probably rp is always valid here now and
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// pRun->_cch is nonzero
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pRun = rp.GetRun(0);
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if (pRun->_cch) // run not empty
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{
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ifmtEnd = pRun->_iFormat; // Remember end format and count
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levelEnd = pRun->_level;
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cchEnd = pRun->_cch; // in case of merge
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}
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else if(rp._iRun != rp.Count() - 1) // run not last
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{
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pRun = rp.GetRun(1);
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ifmtEnd = pRun->_iFormat; // Remember end format and count
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levelEnd = pRun->_level;
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cchEnd = pRun->_cch; // in case of merge
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}
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}
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rp = *this; // Default to delete this run
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if(_ich) // There are chars in this run
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{
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if(cchMove + _ich == 0) // Need to combine all chars of
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{ // this run with run after del,
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pf->AddRef(ifmtEnd); // so setup merge below using
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ifmtStart = ifmtEnd; // ifmtEnd. This run then takes
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pf->Release(GetRun(0)->_iFormat);
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GetRun(0)->_iFormat = ifmtEnd; // place of run after del.
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GetRun(0)->_level = levelEnd;
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cchMove = 0; // cchMove all accounted for
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}
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rp.NextRun(); // Don't delete this run; start
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cRun--; // with next one
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}
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AdjustBackward(); // If !_ich, go to prev EOR
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if(ifmtEnd >=0 && // Same formats: merge runs
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ifmtEnd == ifmtStart &&
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levelStart == levelEnd)
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{
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GetRun(0)->_cch += cchEnd; // Add last-run cch to this one's
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Assert(GetRun(0)->_cch >= 0);
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cRun++; // Setup to eat last run
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}
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if(cRun > 0) // There are run(s) to delete
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{
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rp.Remove(cRun, pf);
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if(!Count()) // If no more runs, keep this rp
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_ich = _iRun = 0; // valid by pointing at cp = 0
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}
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move:
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if(cchMove) // Need to move some cch between
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{ // this run and next (See
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GetRun(0)->_cch += cchMove; // CRchTxtPtr::ReplaceRange())
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rp.GetRun(0)->_cch -= cchMove;
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Assert(GetRun(0)->_cch >= 0);
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Assert(rp.GetRun(0)->_cch >= 0);
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Assert(_iRun < rp._iRun);
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if(!rp.GetRun(0)->_cch) // If all chars moved out of rp's
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rp.Remove(1, pf); // run, delete it
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if(cchMove < 0) // Moved -cchMove chars from this
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{ // run to next
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if(!GetRun(0)->_cch)
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Remove(1, pf);
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else
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_iRun++; // Keep this run ptr in sync with
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_ich = -cchMove; // cp (can't use NextRun() due
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} // to Invariants)
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}
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AdjustForward(); // Don't leave ptr at EOR unless
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} // there are no more runs
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/*
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* CFormatRunPtr::InsertFormat(cch, ifmt, pf)
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*
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* @mfunc
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* Insert cch chars with format ifmt into format runs starting at
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* this run ptr
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*
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* @rdesc
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* count of characters added
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*
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* @devnote
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* It is the caller's responsibility to ensure that we are in the
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* "normal" or "empty" state. A format run pointer doesn't know about
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* CTxtStory, so it can't create the run array without outside help.
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*/
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LONG CFormatRunPtr::InsertFormat(
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LONG cch, //@parm # chars to insert
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LONG ifmt, //@parm format to use
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IFormatCache *pf) //@parm pointer to IFormatCache to AddRefFormat
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{
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TRACEBEGIN(TRCSUBSYSBACK, TRCSCOPEINTERN, "CFormatRunPtr::InsertFormat");
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LONG cRun;
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CFormatRun *pRun;
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CFormatRun *pRunPrev;
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LONG cchRun; // Current-run length,
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LONG ich; // offset, and
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LONG iFormat; // format
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_TEST_INVARIANT_
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Assert(_pRuns);
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if(!IsValid())
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{
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// Empty run case (occurs when inserting after all text is deleted)
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pRun = Add(1, NULL);
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goto StoreNewRunData; // (located at end of function)
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}
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// Go to previous run if at a boundary case
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AdjustBackward();
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pRun = Elem(_iRun); // Try other cases
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cchRun = pRun->_cch;
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iFormat = pRun->_iFormat;
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ich = _ich;
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// Same run case. Note that there is an additional boundary case; if we
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// are the _end_ of one run, then the next run may have the necessary
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// format.
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if(ifmt == iFormat) // IP already has correct fmt
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{
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pRun->_cch += cch;
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_ich += cch; // Inc offset to keep in sync
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return cch;
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}
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if(_ich == pRun->_cch && _iRun < _pRuns->Count() - 1)
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{
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AdjustForward();
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pRun = Elem(_iRun);
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Assert(pRun);
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if(pRun->_iFormat == ifmt)
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{
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pRun->_cch += cch;
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_ich += cch;
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return cch;
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}
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AdjustBackward();
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}
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// Prior run case (needed when formatting change occurs on line break
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// and caret is at beginning of new line)
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if(!ich && _iRun > 0 ) // IP at start of run
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{
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pRunPrev = GetPtr(pRun, -1);
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if( ifmt == pRunPrev->_iFormat) // Prev run has same format:
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{ // add count to prev run and
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pRunPrev->_cch += cch;
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return cch;
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}
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}
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// Create new run[s] cases. There is a special case for a format
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// run of zero length: just re-use it.
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if(!pRun->_cch)
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{
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// This assert has been toned down to ignore a plain text control
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// being forced into IME Rich Composition.
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AssertSz( /* FALSE */ pRun->_iFormat == -1 && Count() == 1,
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"CFormatRunPtr::InsertFormat: 0-length run");
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pf->Release(pRun->_iFormat);
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}
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else // Need to create 1 or 2 new
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{ // runs for insertion
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cRun = 1; // Default 1 new run
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if(ich && ich < cchRun) // Not at beginning or end of
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cRun++; // run, so need two new runs
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// The following insert call adds one or two runs at the current
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// position. If the new run is inserted at the beginning or end
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// of the current run, the latter needs no change; however, if
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// the new run splits the current run in two, both pieces have
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// to be updated (cRun == 2 case).
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pRun = Insert(cRun); // Insert cRun run(s)
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if(!pRun) // Out of RAM. Can't insert
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{ // new format, but can keep
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_ich += cch; // run ptr and format runs
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GetRun(0)->_cch += cch; // valid. Note: doesn't
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return cch; // signal any error; no access
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} // to _ped->_fErrSpace
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if(ich) // Not at beginning of run,
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{
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pRunPrev = pRun; // Previous run is current run
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IncPtr(pRun); // New run is next run
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VALIDATE_PTR(pRun);
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pRun->_cch = cch; // Keep NextRun() invariant happy
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NextRun(); // Point this runptr at it too
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if(cRun == 2) // Are splitting current run
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{ // _iFormat's are already set
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AssertSz(pRunPrev->_iFormat == iFormat,
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"CFormatRunPtr::InsertFormat: bad format inserted");
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pRunPrev->_cch = ich; // Divide up original cch
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GetPtr(pRun, 1)->_cch // accordingly
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= cchRun - ich;
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pf->AddRef(iFormat); // Addref iFormat for extra run
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}
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}
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}
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StoreNewRunData:
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pf->AddRef(ifmt); // Addref ifmt
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ZeroMemory(pRun, sizeof(*pRun));
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pRun->_iFormat = ifmt; // Store insert format and count
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pRun->_cch = cch; // of new run
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_ich = cch; // cp goes at end of insertion
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return cch;
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}
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|
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/*
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* CFormatRunPtr::MergeRuns(iRun, pf)
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*
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* @mfunc
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|
* Merge adjacent runs that have the same format between this run
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* <md CFormatRunPtr::_iRun> and that for <p iRun>
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*
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* @comm
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|
* Changes this run ptr
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|
*/
|
|
void CFormatRunPtr::MergeRuns(
|
|
LONG iRun, //@parm last run to check (can preceed or follow
|
|
// <md CFormatRunPtr::_iRun>)
|
|
IFormatCache *pf) //@parm pointer to IFormatCache to ReleaseFormat
|
|
{
|
|
TRACEBEGIN(TRCSUBSYSBACK, TRCSCOPEINTERN, "CFormatRunPtr::MergeRuns");
|
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|
|
LONG cch;
|
|
LONG cRuns = iRun - _iRun;
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LONG iDirection = 1; // Default going forward
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CFormatRun *pRun;
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|
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_TEST_INVARIANT_
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|
if(cRuns < 0)
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{
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cRuns = -cRuns;
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iDirection = -1;
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}
|
|
if(!IsValid()) // Allow starting run to be
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{ // invalid
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Assert(FALSE); // I think this is old...
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ChgRun(iDirection);
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}
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|
|
while(cRuns--)
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{
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if(!GetRun(0)->_cch && !_iRun && _iRun < Count() - 1)
|
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{
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if(iDirection > 0)
|
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PrevRun();
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Remove(1, pf);
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continue;
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}
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pRun = GetRun(0); // Save the current run
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|
|
if(!ChgRun(iDirection)) // Go to next (or prev) run
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|
return; // No more runs to check
|
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|
|
if(pRun->SameFormat(GetRun(0)))
|
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{ // Like formatted runs
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|
if(iDirection > 0) // Point at the first of the
|
|
PrevRun(); // two runs
|
|
cch = GetRun(0)->_cch; // Save its count
|
|
Remove(1, pf); // Remove it
|
|
GetRun(0)->_cch += cch; // Add its count to the other's,
|
|
} // i.e., they're merged
|
|
}
|
|
}
|
|
|
|
/*
|
|
* CFormatRunPtr::Remove(cRun, flag, pf)
|
|
*
|
|
* @mfunc
|
|
* Remove cRun runs starting at _iRun
|
|
*/
|
|
void CFormatRunPtr::Remove(
|
|
LONG cRun,
|
|
IFormatCache *pf)
|
|
{
|
|
CFormatRun *pRun = GetRun(0); // Point at run(s) to delete
|
|
|
|
for(LONG j = 0; j < cRun; j++, IncPtr(pRun))
|
|
pf->Release(pRun->_iFormat); // Decrement run reference count
|
|
|
|
CRunPtr<CFormatRun>::Remove(cRun);
|
|
}
|
|
|
|
/*
|
|
* CFormatRunPtr::SetFormat(ifmt, cch, pf, pLevel)
|
|
*
|
|
* @mfunc
|
|
* Set format for up to cch chars of this run to ifmt, splitting run
|
|
* as needed, and returning the character count actually processed
|
|
*
|
|
* @rdesc
|
|
* character count of run chunk processed, CP_INFINITE on failure
|
|
* this points at next run
|
|
*
|
|
* Comments:
|
|
* Changes this run ptr. cch must be >= 0.
|
|
*
|
|
* Note 1) for the first run in a series, _ich may not = 0, and 2) cch
|
|
* may be <lt>, =, or <gt> the count remaining in the run. The algorithm
|
|
* doesn't split runs when the format doesn't change.
|
|
*/
|
|
LONG CFormatRunPtr::SetFormat(
|
|
LONG ifmt, //@parm format index to use
|
|
LONG cch, //@parm character count of remaining format range
|
|
IFormatCache * pf, //@parm pointer to IFormatCache to
|
|
CBiDiLevel* pLevel) //@parm pointer to BiDi level structure
|
|
{
|
|
TRACEBEGIN(TRCSUBSYSBACK, TRCSCOPEINTERN, "CFormatRunPtr::SetFormat");
|
|
// AddRefFormat/ReleaseFormat
|
|
LONG cchChunk;
|
|
LONG iFormat;
|
|
CFormatRun * pRun;
|
|
CFormatRun * pChgRun; // run that was reformatted
|
|
CBiDiLevel level;
|
|
|
|
_TEST_INVARIANT_
|
|
|
|
if(!IsValid())
|
|
return 0;
|
|
|
|
pRun = GetRun(0); // pRun points at current run in
|
|
cchChunk = pRun->_cch - _ich; // this function
|
|
iFormat = pRun->_iFormat;
|
|
level = pRun->_level;
|
|
pChgRun = pRun;
|
|
|
|
AssertSz(cch, "Have to have characters to format!");
|
|
AssertSz(pRun->_cch, "uh-oh, empty format run detected");
|
|
|
|
if(ifmt != iFormat || (pLevel && level != *pLevel)) // New and current formats differ
|
|
{
|
|
AssertSz(cchChunk, "Caller did not call AdjustForward");
|
|
|
|
if(_ich) // Not at either end of run: need
|
|
{ // to split into two runs of
|
|
if(!(pRun = Insert(1))) // counts _ich and _pRun->_cch
|
|
{ // - _ich, respectively
|
|
return CP_INFINITE; // Out of RAM: do nothing; just
|
|
} // keep current format
|
|
pRun->_cch = _ich;
|
|
pRun->_iFormat = iFormat; // New run has same format
|
|
pRun->_level = level; // and same level
|
|
pf->AddRef(iFormat); // Increment format ref count
|
|
NextRun(); // Go to second (original) run
|
|
IncPtr(pRun); // Point pRun at current run
|
|
pRun->_cch = cchChunk; // Note: IncPtr is a bit more
|
|
pChgRun = pRun;
|
|
} // efficient than GetRun, but
|
|
// trickier to code right
|
|
if(cch < cchChunk) // cch doesn't cover whole run:
|
|
{ // need to split into two runs
|
|
if(!(pRun = Insert(1)))
|
|
{
|
|
// Out of RAM, so formatting's wrong, oh well. We actually
|
|
// "processed" all of the characters, so return that (though
|
|
// the tail end formatting isn't split out right)
|
|
return cch;
|
|
}
|
|
pRun->_cch = cch; // New run gets the cch
|
|
pRun->_iFormat = ifmt; // and the new format
|
|
pChgRun = pRun;
|
|
IncPtr(pRun); // Point pRun at current run
|
|
pRun->_cch = cchChunk - cch; // Set leftover count
|
|
}
|
|
else // cch as big or bigger than
|
|
{ // current run
|
|
pf->Release(iFormat); // Free run's current format
|
|
pRun->_iFormat = ifmt; // Change it to new format
|
|
pChgRun = pRun;
|
|
} // May get merged later
|
|
pf->AddRef(ifmt); // Increment new format ref count
|
|
}
|
|
else if( cchChunk == 0 )
|
|
{
|
|
pRun->_cch += cch;
|
|
cchChunk = cch;
|
|
}
|
|
|
|
// record embedding level to changed run
|
|
if (pLevel)
|
|
pChgRun->_level = *pLevel;
|
|
|
|
cch = min(cch, cchChunk);
|
|
AdvanceCp(cch);
|
|
AdjustForward();
|
|
return cch;
|
|
}
|
|
|
|
/*
|
|
* CFormatRunPtr::GetFormat()
|
|
*
|
|
* @mfunc
|
|
* return format index at current run pointer position
|
|
*
|
|
* @rdesc
|
|
* current format index
|
|
*/
|
|
short CFormatRunPtr::GetFormat() const
|
|
{
|
|
TRACEBEGIN(TRCSUBSYSBACK, TRCSCOPEINTERN, "CFormatRunPtr::GetFormat");
|
|
_TEST_INVARIANT_
|
|
|
|
return IsValid() ? GetRun(0)->_iFormat : -1;
|
|
}
|
|
|
|
|
|
/*
|
|
* CFormatRunPtr::SplitFormat(IFormatCache*)
|
|
*
|
|
* @mfunc
|
|
* Split a format run
|
|
*
|
|
* @rdesc
|
|
* If succeeded the run pointer moves to the next splitted run
|
|
*/
|
|
void CFormatRunPtr::SplitFormat(IFormatCache* pf)
|
|
{
|
|
if (!_ich || _ich == GetRun(0)->_cch)
|
|
return;
|
|
|
|
CFormatRun* pRun = GetRun(0);
|
|
LONG iFormat = pRun->_iFormat;
|
|
LONG cch = pRun->_cch - _ich;
|
|
CBiDiLevel level = pRun->_level;
|
|
|
|
if (pRun = Insert(1))
|
|
{
|
|
pRun->_cch = _ich;
|
|
pRun->_iFormat = iFormat;
|
|
pRun->_level = level;
|
|
pf->AddRef(iFormat);
|
|
NextRun();
|
|
IncPtr(pRun);
|
|
pRun->_cch = cch;
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
* CFormatRunPtr::SetLevel(level)
|
|
*
|
|
* @mfunc
|
|
* Set run's embedding level
|
|
*/
|
|
void CFormatRunPtr::SetLevel (CBiDiLevel& level)
|
|
{
|
|
if (!IsValid())
|
|
{
|
|
Assert(FALSE);
|
|
return;
|
|
}
|
|
|
|
CFormatRun* pRun = GetRun(0);
|
|
|
|
if (pRun)
|
|
pRun->_level = level;
|
|
}
|
|
|
|
BYTE CFormatRunPtr::GetLevel (CBiDiLevel* pLevel)
|
|
{
|
|
CFormatRun* pRun;
|
|
|
|
if (!IsValid() || !(pRun = GetRun(0)))
|
|
{
|
|
Assert(FALSE);
|
|
|
|
if (pLevel)
|
|
{
|
|
pLevel->_value = 0;
|
|
pLevel->_fStart = FALSE;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
if (pLevel)
|
|
*pLevel = pRun->_level;
|
|
|
|
return pRun->_level._value;
|
|
}
|
|
|
|
/*
|
|
* CFormatRunPtr::AdjustFormatting(cch, pf)
|
|
*
|
|
* @mfunc
|
|
* Use the same format index for the cch chars at this run ptr
|
|
* as that immediately preceeding it (if on run edge).
|
|
*
|
|
* @devnote
|
|
* This runptr ends up pointing at what was the preceeding run,
|
|
* since the current run has been moved into the preceeding run.
|
|
*
|
|
* FUTURE: might be better to take the cch equal to chars in
|
|
* the following run.
|
|
*/
|
|
void CFormatRunPtr::AdjustFormatting(
|
|
LONG cch, //@parm Count of chars to extend formatting
|
|
IFormatCache *pf) //@parm Format cache ptr for AddRef/Release
|
|
{
|
|
if(!IsValid())
|
|
return; // Nothing to merge
|
|
|
|
CFormatRunPtr rp(*this);
|
|
CBiDiLevel level;
|
|
// Move this run ptr to end of
|
|
AdjustBackward(); // preceeding run (if at run edge)
|
|
rp.AdjustForward(); // (merge may delete run at entry)
|
|
if(_iRun != rp._iRun) // On a format edge: copy previous
|
|
{ // format index over
|
|
GetLevel(&level);
|
|
rp.SetFormat(GetFormat(), cch, pf, &level); // Format cch chars at this
|
|
rp.MergeRuns(_iRun, pf); // runptr
|
|
}
|
|
}
|
|
|
|
|
|
///////////////////////////// CCFRunPtr ///////////////////////////////
|
|
|
|
CCFRunPtr::CCFRunPtr(const CRchTxtPtr &rtp)
|
|
: CFormatRunPtr(rtp._rpCF)
|
|
{
|
|
_ped = rtp.GetPed();
|
|
}
|
|
|
|
CCFRunPtr::CCFRunPtr(const CFormatRunPtr &rp, CTxtEdit *ped)
|
|
: CFormatRunPtr(rp)
|
|
{
|
|
_ped = ped;
|
|
}
|
|
|
|
/*
|
|
* CCFRunPtr::IsMask(dwMask, MaskOp)
|
|
*
|
|
* @mfunc
|
|
* return TRUE according to the mask operation MaskOp operating on
|
|
* _dwEffects.
|
|
*
|
|
* @rdesc
|
|
* TRUE if bits in CCharFormat::dwEffects correspond to those in dwMask
|
|
*/
|
|
BOOL CCFRunPtr::IsMask(
|
|
DWORD dwMask, //@parm Bit mask to use on dwEffects
|
|
MASKOP MaskOp) //@parm Logic operation for bits
|
|
{
|
|
DWORD dwEffects = _ped->GetCharFormat(GetFormat())->_dwEffects;
|
|
|
|
if(MaskOp == MO_EXACT) // Bit masks must be identical
|
|
return dwEffects == dwMask;
|
|
|
|
dwEffects &= dwMask;
|
|
if(MaskOp == MO_OR) // TRUE if one or more effect bits
|
|
return dwEffects != 0; // identified by mask are on
|
|
|
|
if(MaskOp == MO_AND) // TRUE if all effect bits
|
|
return dwEffects == dwMask; // identified by mask are on
|
|
|
|
AssertSz(FALSE, "CCFRunPtr::IsMask: illegal mask operation");
|
|
return FALSE;
|
|
}
|
|
|
|
/*
|
|
* CCFRunPtr::IsInHidden()
|
|
*
|
|
* @mfunc
|
|
* return TRUE if CCharFormat for this run ptr has CFE_HIDDEN bit set
|
|
*
|
|
* @rdesc
|
|
* TRUE if CCharFormat for this run ptr has CFE_HIDDEN bit set
|
|
*/
|
|
BOOL CCFRunPtr::IsInHidden()
|
|
{
|
|
AdjustForward();
|
|
BOOL fHidden = IsHidden();
|
|
if(_ich)
|
|
return fHidden;
|
|
|
|
AdjustBackward();
|
|
return fHidden && IsHidden();
|
|
}
|
|
|
|
/*
|
|
* CCFRunPtr::FindUnhidden()
|
|
*
|
|
* @mfunc
|
|
* Find nearest expanded CF going forward. If none, find nearest going
|
|
* backward. If none, go to start of document
|
|
*
|
|
* @rdesc
|
|
* cch to nearest expanded CF as explained in function description
|
|
*
|
|
* @devnote
|
|
* changes this run ptr
|
|
*/
|
|
LONG CCFRunPtr::FindUnhidden()
|
|
{
|
|
LONG cch = FindUnhiddenForward();
|
|
|
|
if(IsHidden())
|
|
cch = FindUnhiddenBackward();
|
|
|
|
return cch;
|
|
}
|
|
|
|
/*
|
|
* CCFRunPtr::FindUnhiddenForward()
|
|
*
|
|
* @mfunc
|
|
* Find nearest expanded CF going forward. If none, go to EOD
|
|
*
|
|
* @rdesc
|
|
* cch to nearest expanded CF going forward
|
|
*
|
|
* @devnote
|
|
* changes this run ptr
|
|
*/
|
|
LONG CCFRunPtr::FindUnhiddenForward()
|
|
{
|
|
LONG cch = 0;
|
|
|
|
AdjustForward();
|
|
while(IsHidden())
|
|
{
|
|
cch += GetCchLeft();
|
|
if(!NextRun())
|
|
break;
|
|
}
|
|
return cch;
|
|
}
|
|
|
|
/*
|
|
* CCFRunPtr::MatchFormatSignature
|
|
*
|
|
* @mfunc
|
|
* Match the current format's font signature with the script (index to codepage).
|
|
* It takes care single-codepage fonts which implicitly supports ASCII range.
|
|
*
|
|
* @rdesc
|
|
* return how font matched
|
|
*/
|
|
|
|
inline int CCFRunPtr::MatchFormatSignature (
|
|
const CCharFormat* pCF,
|
|
int iScript,
|
|
int iMatchCurrent,
|
|
DWORD* pdwFontSig)
|
|
{
|
|
DWORD dwFontSig = 0;
|
|
|
|
if (GetFontSignatureFromFace(pCF->_iFont, &dwFontSig) != 0)
|
|
{
|
|
if (pdwFontSig)
|
|
*pdwFontSig = dwFontSig;
|
|
|
|
if (iMatchCurrent & MATCH_ASCII && fc().GetInfoFlags(pCF->_iFont).fNonBiDiAscii)
|
|
return MATCH_ASCII;
|
|
|
|
if (W32->GetFontSigFromScript(iScript) & ~(fASCII >> 8) & dwFontSig)
|
|
return MATCH_FONT_SIG;
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/*
|
|
* CCFRunPtr::GetPreferredFontInfo( cpg, bCharSet, iFont, yHeight, bPitchAndFamily,
|
|
* iFormat, iMatchCurrent )
|
|
*
|
|
* @mfunc
|
|
* Find the preferred font for the given code page around the range.
|
|
*
|
|
* @rdesc
|
|
* boolean true if suitable font found, false otherwise.
|
|
*/
|
|
bool CCFRunPtr::GetPreferredFontInfo(
|
|
int cpg,
|
|
BYTE& bRetCharSet,
|
|
SHORT& iFont,
|
|
SHORT& yHeight, // return in twips
|
|
BYTE& bPitchAndFamily,
|
|
int iFormat,
|
|
int iMatchCurrent)
|
|
{
|
|
int i, iScript;
|
|
bool fr = false;
|
|
static int const MAX_FONTSEARCH = 256;
|
|
const CCharFormat *pCF;
|
|
const CCharFormat *pCFCurrent;
|
|
const CCharFormat *pCFPrevious = NULL;
|
|
int iMatch = 0; // how signature match?
|
|
DWORD dwCurrentFontSig = 0;
|
|
SHORT yNewHeight = 0;
|
|
BYTE bCharSet = GetCharSet(cpg, &iScript);
|
|
bool fUseUIFont = _ped->fUseUIFont() || _ped->Get10Mode();
|
|
|
|
Assert(!(iMatchCurrent & MATCH_ASCII) || bCharSet == ANSI_CHARSET);
|
|
|
|
if(_ped->fUseUIFont())
|
|
pCFCurrent = _ped->GetCharFormat(-1); // Plain text or UI font specified
|
|
else
|
|
pCFCurrent = _ped->GetCharFormat(iFormat != -1 ? iFormat : GetFormat());
|
|
|
|
if ((iMatchCurrent & MATCH_FONT_SIG) &&
|
|
(iMatch = MatchFormatSignature(pCFCurrent, iScript, iMatchCurrent, &dwCurrentFontSig)) != 0)
|
|
{
|
|
pCF = pCFCurrent; // Setup to use it
|
|
}
|
|
else
|
|
{
|
|
// Try searching backwards
|
|
if (IsValid()) // If doc has CF runs
|
|
AdjustBackward();
|
|
i = MAX_FONTSEARCH; // Don't be searching for years
|
|
pCF = _ped->GetCharFormat(GetFormat());
|
|
while (i--)
|
|
{
|
|
if (bCharSet == pCF->_bCharSet) // Equal charset ids?
|
|
{
|
|
pCFPrevious = pCF;
|
|
break;
|
|
}
|
|
if (!PrevRun()) // Done searching?
|
|
break;
|
|
pCF = _ped->GetCharFormat(GetFormat());
|
|
}
|
|
pCF = pCFPrevious;
|
|
}
|
|
|
|
// Try match charset if requested
|
|
if(!pCF && iMatchCurrent == MATCH_CURRENT_CHARSET)
|
|
{
|
|
CCcs* pccs = fc().GetCcs(pCFCurrent, W32->GetYPerInchScreenDC());
|
|
if (pccs)
|
|
{
|
|
if (pccs->BestCharSet(bCharSet, 1, MATCH_CURRENT_CHARSET) != 1)
|
|
pCF = pCFCurrent; // Current font can do it
|
|
pccs->Release();
|
|
}
|
|
}
|
|
|
|
// Try default document format
|
|
if (!pCF)
|
|
{
|
|
pCF = _ped->GetCharFormat(-1);
|
|
if (bCharSet != pCF->_bCharSet) // Diff charset ids?
|
|
pCF = NULL;
|
|
}
|
|
|
|
yHeight = pCFCurrent->_yHeight; // assume current height
|
|
|
|
if (!pCF)
|
|
{
|
|
// Default to table if no match.
|
|
|
|
fr = W32->GetPreferredFontInfo(
|
|
cpg, fUseUIFont, iFont, (BYTE&)yNewHeight, bPitchAndFamily );
|
|
|
|
if (!_ped->_fAutoFontSizeAdjust && (cpg == CP_THAI || cpg == THAI_INDEX))
|
|
// Kick in font size adjusting in first bind to Thai.
|
|
_ped->_fAutoFontSizeAdjust = TRUE;
|
|
}
|
|
|
|
if (pCF)
|
|
{
|
|
// Found previous or current font
|
|
iFont = pCF->_iFont;
|
|
bPitchAndFamily = pCF->_bPitchAndFamily;
|
|
|
|
if (pCF == pCFCurrent && (iMatchCurrent & MATCH_FONT_SIG) &&
|
|
(IsFECharSet(pCF->_bCharSet) && W32->IsFECodePageFont(dwCurrentFontSig) ||
|
|
iMatch == MATCH_ASCII && bCharSet == ANSI_CHARSET))
|
|
{
|
|
// The current font matches the requested signature.
|
|
// If it's a FarEast or ASCII font. We leave the charset intact.
|
|
bRetCharSet = pCF->_bCharSet;
|
|
return true;
|
|
}
|
|
}
|
|
|
|
if (_ped->_fAutoFontSizeAdjust && iFont != pCFCurrent->_iFont)
|
|
{
|
|
if (IsValid())
|
|
{
|
|
// If the last run format is available. We will scale the size relative to it.
|
|
|
|
AdjustBackward();
|
|
if (GetIch() > 0)
|
|
{
|
|
pCFCurrent = _ped->GetCharFormat(GetFormat());
|
|
yHeight = pCFCurrent->_yHeight;
|
|
}
|
|
AdjustForward();
|
|
}
|
|
|
|
if (iFont != pCFCurrent->_iFont)
|
|
{
|
|
// Scale the height relative to the preceding format
|
|
|
|
if (pCF)
|
|
yNewHeight = GetFontLegitimateSize(iFont, fUseUIFont, cpg);
|
|
|
|
if (yNewHeight)
|
|
{
|
|
// Get legitimate size of the current font
|
|
SHORT yDefHeight = GetFontLegitimateSize(pCFCurrent->_iFont, fUseUIFont, GetCodePage(pCFCurrent->_bCharSet));
|
|
|
|
// Calculate the new height relative to the current height
|
|
if (yDefHeight)
|
|
{
|
|
if (fUseUIFont)
|
|
{
|
|
// For UIFont, we only convert from one preferred size to another preferred size.
|
|
if (pCFCurrent->_yHeight / TWIPS_PER_POINT == yDefHeight)
|
|
yHeight = yNewHeight * TWIPS_PER_POINT;
|
|
}
|
|
else
|
|
yHeight = (SHORT)MulDiv(pCFCurrent->_yHeight, yNewHeight, yDefHeight);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
if (!yHeight)
|
|
yHeight = (SHORT)MulDiv(pCFCurrent->_yHeight, yNewHeight, 10);
|
|
|
|
return pCF || fr;
|
|
}
|
|
|
|
/*
|
|
* CCFRunPtr::FindUnhiddenBackward()
|
|
*
|
|
* @mfunc
|
|
* Find nearest expanded CF going backward. If none, go to BOD
|
|
*
|
|
* @rdesc
|
|
* cch to nearest expanded CF going backward
|
|
*
|
|
* @devnote
|
|
* changes this run ptr
|
|
*/
|
|
LONG CCFRunPtr::FindUnhiddenBackward()
|
|
{
|
|
LONG cch = 0;
|
|
|
|
AdjustBackward();
|
|
while(IsHidden())
|
|
{
|
|
cch -= GetIch();
|
|
if(!_iRun)
|
|
break;
|
|
_ich = 0;
|
|
AdjustBackward();
|
|
}
|
|
return cch;
|
|
}
|
|
|
|
///////////////////////////// CPFRunPtr ///////////////////////////////
|
|
|
|
CPFRunPtr::CPFRunPtr(const CRchTxtPtr &rtp)
|
|
: CFormatRunPtr(rtp._rpPF)
|
|
{
|
|
_ped = rtp.GetPed();
|
|
}
|
|
|
|
/*
|
|
* CPFRunPtr::FindHeading(cch, lHeading)
|
|
*
|
|
* @mfunc
|
|
* Find heading with number lHeading (e.g., = 1 for Heading 1) or above
|
|
* in a range starting at this PFrun pointer. If successful, this run
|
|
* ptr points at the matching run; else it remains unchanged.
|
|
*
|
|
* @rdesc
|
|
* cch to matching heading or tomBackward if not found
|
|
*
|
|
* @devnote
|
|
* changes this run ptr
|
|
*/
|
|
LONG CPFRunPtr::FindHeading(
|
|
LONG cch, //@parm Max cch to move
|
|
LONG& lHeading) //@parm Lowest lHeading to match
|
|
{
|
|
LONG cchSave = cch;
|
|
LONG ichSave = _ich;
|
|
LONG iRunSave = _iRun;
|
|
LONG OutlineLevel;
|
|
|
|
Assert((unsigned)lHeading <= NHSTYLES);
|
|
|
|
if(!IsValid())
|
|
return tomBackward;
|
|
|
|
while(TRUE)
|
|
{
|
|
OutlineLevel = GetOutlineLevel();
|
|
|
|
if (!(OutlineLevel & 1) &&
|
|
(!lHeading || (lHeading - 1)*2 >= OutlineLevel))
|
|
{
|
|
lHeading = OutlineLevel/2 + 1; // Return heading # found
|
|
return cchSave - cch; // Return how far away it was
|
|
}
|
|
|
|
if(cch >= 0)
|
|
{
|
|
cch -= GetCchLeft();
|
|
if(cch <= 0 || !NextRun())
|
|
break;
|
|
}
|
|
else
|
|
{
|
|
cch += GetIch();
|
|
if(cch > 0 || !_iRun)
|
|
break;
|
|
AdjustBackward();
|
|
}
|
|
}
|
|
|
|
_ich = ichSave;
|
|
_iRun = iRunSave;
|
|
return tomBackward; // Didn't find desired heading
|
|
}
|
|
|
|
/*
|
|
* CPFRunPtr::IsCollapsed()
|
|
*
|
|
* @mfunc
|
|
* return TRUE if CParaFormat for this run ptr has PFE_COLLAPSED bit set
|
|
*
|
|
* @rdesc
|
|
* TRUE if CParaFormat for this run ptr has PFE_COLLAPSED bit set
|
|
*/
|
|
BOOL CPFRunPtr::IsCollapsed()
|
|
{
|
|
return (_ped->GetParaFormat(GetFormat())->_wEffects & PFE_COLLAPSED) != 0;
|
|
}
|
|
|
|
/*
|
|
* CPFRunPtr::InTable()
|
|
*
|
|
* @mfunc
|
|
* return TRUE if CParaFormat for this run ptr has PFE_TABLE bit set
|
|
*
|
|
* @rdesc
|
|
* TRUE if CParaFormat for this run ptr has PFE_TABLE bit set
|
|
*/
|
|
BOOL CPFRunPtr::InTable()
|
|
{
|
|
return (_ped->GetParaFormat(GetFormat())->_wEffects & PFE_TABLE) != 0;
|
|
}
|
|
|
|
/*
|
|
* CPFRunPtr::FindExpanded()
|
|
*
|
|
* @mfunc
|
|
* Find nearest expanded PF going forward. If none, find nearest going
|
|
* backward. If none, go to start of document
|
|
*
|
|
* @rdesc
|
|
* cch to nearest expanded PF as explained in function description
|
|
*
|
|
* @devnote
|
|
* advances this run ptr the amount returned (cch)
|
|
*/
|
|
LONG CPFRunPtr::FindExpanded()
|
|
{
|
|
LONG cch, cchRun;
|
|
|
|
for(cch = 0; IsCollapsed(); cch += cchRun) // Try to find expanded PF
|
|
{ // run going forward
|
|
cchRun = GetCchLeft();
|
|
if(!NextRun()) // Aren't any
|
|
{
|
|
AdvanceCp(-cch); // Go back to starting point
|
|
return FindExpandedBackward(); // Try to find expanded PF
|
|
} // run going backward
|
|
}
|
|
return cch;
|
|
}
|
|
|
|
/*
|
|
* CPFRunPtr::FindExpandedForward()
|
|
*
|
|
* @mfunc
|
|
* Find nearest expanded PF going forward. If none, go to EOD
|
|
*
|
|
* @rdesc
|
|
* cch to nearest expanded PF going forward
|
|
*
|
|
* @devnote
|
|
* advances this run ptr the amount returned (cch)
|
|
*/
|
|
LONG CPFRunPtr::FindExpandedForward()
|
|
{
|
|
LONG cch = 0;
|
|
|
|
while(IsCollapsed())
|
|
{
|
|
LONG cchLeft = GetCchLeft();
|
|
_ich += cchLeft; // Update _ich in case
|
|
cch += cchLeft; // if(!NextRun()) breaks
|
|
if(!NextRun())
|
|
break;
|
|
}
|
|
return cch;
|
|
}
|
|
|
|
/*
|
|
* CPFRunPtr::FindExpandedBackward()
|
|
*
|
|
* @mfunc
|
|
* Find nearest expanded PF going backward. If none, go to BOD
|
|
*
|
|
* @rdesc
|
|
* cch to nearest expanded PF going backward
|
|
*
|
|
* @devnote
|
|
* advances this run ptr the amount returned (cch)
|
|
*/
|
|
LONG CPFRunPtr::FindExpandedBackward()
|
|
{
|
|
LONG cch = 0;
|
|
|
|
while(IsCollapsed())
|
|
{
|
|
cch -= GetIch();
|
|
_ich = 0;
|
|
if(!_iRun)
|
|
break;
|
|
AdjustBackward();
|
|
}
|
|
return cch;
|
|
}
|
|
|
|
/*
|
|
* CPFRunPtr::GetOutlineLevel()
|
|
*
|
|
* @mfunc
|
|
* Find outline level this rp is pointing at
|
|
*
|
|
* @rdesc
|
|
* Outline level this rp is pointing at
|
|
*/
|
|
LONG CPFRunPtr::GetOutlineLevel()
|
|
{
|
|
const CParaFormat *pPF = _ped->GetParaFormat(GetFormat());
|
|
LONG OutlineLevel = pPF->_bOutlineLevel;
|
|
|
|
AssertSz(IsHeadingStyle(pPF->_sStyle) ^ (OutlineLevel & 1),
|
|
"CPFRunPtr::GetOutlineLevel: sStyle/bOutlineLevel mismatch");
|
|
|
|
return OutlineLevel;
|
|
}
|
|
|
|
/*
|
|
* CPFRunPtr::GetStyle()
|
|
*
|
|
* @mfunc
|
|
* Find style this rp is pointing at
|
|
*
|
|
* @rdesc
|
|
* Style this rp is pointing at
|
|
*/
|
|
LONG CPFRunPtr::GetStyle()
|
|
{
|
|
const CParaFormat *pPF = _ped->GetParaFormat(GetFormat());
|
|
LONG Style = pPF->_sStyle;
|
|
|
|
AssertSz(IsHeadingStyle(Style) ^ (pPF->_bOutlineLevel & 1),
|
|
"CPFRunPtr::GetStyle: sStyle/bOutlineLevel mismatch");
|
|
|
|
return Style;
|
|
}
|
|
|