| Quellcodebibliothek Statistik Leitseite products/Sources/formale Sprachen/C/Lyx/src/ (Lyx Textverarbeitung ©) Datei vom 26.9.1998 mit Größe 6 kB |
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Quelle math_iter.h Sprache: C |
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// -*- C++ -*-
/* * File: math_iter.h * Purpose: Iterator for Math paragraphs * Author: Alejandro Aguilar Sierra <asierra@servidor.unam.mx> * Created: January 1997 * Description: Using iterators is the only way to handle math paragraphs * * Dependencies: Xlib * * Copyright: (c) 1996, 1997 Alejandro Aguilar Sierra * * Version: 0.8beta, Mathed & Lyx project. * * You are free to use and modify this code under the terms of * the GNU General Public Licence version 2 or later. * */ #ifndef __MATH_ITER__ #define __MATH_ITER__ #ifdef __GNUG__ #pragma interface #endif #include "math_defs.h" /// enum mathIterFlags { /// Allow newlines MthIF_CR = 1, /// Allow tabs MthIF_Tabs = 2 }; /** Specialized array iterator for amth paragraph. Used for storing and querying data operations */ class MathedIter { public: /// MathedIter() { pos = 0; fcode = 0; array = NULL; flags = 0; ncols = row = col = 0; } /// MathedIter(LyxArrayBase *); /// virtual ~MathedIter() { } /// bool goNextCode(MathedTextCodes); /// void goPosRel(int); /// void goPosAbs(int); /// int Empty() { return array->last<=1; } /// int OK() { return array && (pos < array->last); } /// int IsFirst() { return (pos==0); } /// byte GetChar(); /// byte* GetString(int& len); /// MathedInset* GetInset(); /// MathParInset* GetActiveInset(); /// bool IsInset(); /// bool IsActive(); /// bool IsFont(); /// bool IsScript(); /// bool IsTab(); /// bool IsCR(); /// virtual void Reset(); /// virtual void Insert(byte, MathedTextCodes c=LM_TC_CONST); /// virtual void Insert(MathedInset*, int t=LM_TC_INSET); /// virtual bool Delete(); /// virtual bool Next(); /// Check consistency of tabs and newlines void checkTabs(); /// Try to adjust tabs in the expected place, as in eqnarrays void adjustTabs(); /// short FCode() const { return fcode; } /// int getPos() const { return pos; } /// int getRow() const { return row; } /// int getCol() const { return col; } /// void setNumCols(int n) { ncols = n; } /// void SetData(LyxArrayBase *a) { array = a; Reset(); } /// LyxArrayBase *GetData() { return array; } /// Copy every object from position p1 to p2 LyxArrayBase *Copy(int p1=0, int p2=10000); /// Delete every object from position p1 to p2 void Clear(); protected: /// void split(int); /// void join(int); /// int flags; /// short fcode; /// int pos; /// int row, col, ncols; /// LyxArrayBase *array; // one element stack struct MIState { /// short fcode; /// int x, y; /// int pos, row, col; } stck; /// Saves the current state of the iterator virtual void ipush(); /// Recover previous state virtual void ipop(); }; /// #define MX_WAS_SUB 1 /// #define MX_WAS_SUPER 2 /** A graphic iterator (updates position.) Used for metrics and updating cursor position */ class MathedXIter: public MathedIter { public: /// MathedXIter(): MathedIter() { x = y = size = 0; p = 0; crow = 0; } /// MathedXIter(MathParInset*); /// ~MathedXIter() { }; /// void SetData(MathParInset *); /// MathParInset *getPar() { return p; } /// bool Next(); /// bool Prev(); /// bool Up(); /// bool Down(); /// bool goNextColumn(); /// void GoLast(); /// void GoBegin(); /// void Adjust(); /// inline void GetPos(int&, int&); /// inline void GetIncPos(int&, int&); /// byte* GetString(int&); /// int GetX(); /// int GetY(); /// void subMetrics(int, int); /// void fitCoord(int, int); /// void getAD(int& a, int& d); /// Create a new row and insert #ncols# tabs. void addRow(); /// void delRow(); /**$ These two functions will be moved from here */ //@{ /// bool setLabel(char* label); /// bool setNumbered(bool); //@} /// void setTab(int, int); /// Merge the array at current position void Merge(LyxArrayBase*); /// Delete every object from current position to pos2 void Clean(int pos2); MathedRowSt *adjustVerticalSt(); private: /// This function is not recursive, as MathPar::Metrics is void IMetrics(int, int&, int&, int&); /// Font size (display, text, script, script2) int size; /// current position int x, y; // /// max ascent and descent // int asc, des; /// MathParInset *p; // Limits auxiliary variables /// Position and max width of a script int sx, sw; /// true=center, false=left align (default) bool limits; /// Type of previous script short s_type; void ipush(); void ipop(); protected: /// MathedRowSt *crow; private: /// friend class MathedCursor; }; //-------------------- Inline functions --------------------------// inline bool MathedIter::IsInset() { return MathIsInset(array->bf[pos]); } inline bool MathedIter::IsActive() { return MathIsActive(array->bf[pos]); } inline bool MathedIter::IsFont() { return MathIsFont(array->bf[pos]); } inline bool MathedIter::IsScript() { return MathIsScript(array->bf[pos]); } inline bool MathedIter::IsTab() { return (array->bf[pos]==LM_TC_TAB); } inline bool MathedIter::IsCR() { return (array->bf[pos]==LM_TC_CR); } inline MathedIter::MathedIter(LyxArrayBase *d): array(d) { pos = 0; row = col = 0; fcode = (array && IsFont()) ? array->bf[0]: 0; } inline void MathedIter::ipush() { stck.fcode = fcode; stck.pos = pos; stck.row = row; stck.col = col; } inline void MathedIter::ipop() { fcode = stck.fcode; pos = stck.pos; row = stck.row; col = stck.col; } inline void MathedXIter::GetPos(int&xx, int& yy) { if (p) p->GetXY(xx, yy); else { xx = 0; yy = 0; } xx += x; yy += y; } inline int MathedXIter::GetX() { int xx, yy; GetPos(xx, yy); return xx; } inline int MathedXIter::GetY() { int xx, yy; GetPos(xx, yy); return yy; } inline void MathedXIter::GetIncPos(int& xx, int& yy) { xx = x; yy = y; } inline void MathedXIter::getAD(int& a, int& d) { if (crow) { a = crow->asc; d = crow->desc; } else if (p) { a = p->Ascent(); d = p->Descent(); } else { a = d = 0; } } #endif ¤ Dauer der Verarbeitung: 0.13 Sekunden (vorverarbeitet) ¤*© Formatika GbR, Deutschland |
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2026-03-28