gstring.h

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//& *** (c) 2006-2011 The HPGCC3 Team ***
//& Claudio Lapilli
//& Ingo Blank
//&
//& This file is licensed under the terms and conditions of the
//& HPGCC3 license that is included with the source distribution.
//& *** (c) 2006-2011 The HPGCC3 Team ***

#ifndef GSTRING_H_
#define GSTRING_H_

#ifndef MEMBLOCK_H_
#include <memblock.h>
#endif

class gFont;

class gString : public MemBlock
{
        
        virtual void vTable();
public:
        
        
        inline int TextWidth(int Offset,gFont& f) { return TextWidth(Offset,-1,f); };
        int TextWidth(int Offset,int EndOffset,gFont& f);
        int PrevLine(int Offset);       // RETURN OFFSET OF START OF PREVIOUS LINE, OR -1 IF NO MORE LINES 
        int NextLine(int Offset);       // RETURN OFFSET OF START OF NEXT LINE, OR -1 IF NO MORE LINES
        int StartOfLine(int Offset);    // RETURN OFFSET OF START OF CURRENT LINE 
        int EndOfPrevLine(int Offset); // RETURN POINTER TO THE \n OR \r CHARACTER AT THE END OF PREVIOUS LINE
        int EndOfLine(int Offset); // RETURN OFFSET TO THE END OF CURRENT LINE
        int StartOfText() { return 0; };
        int EndOfText() { return TotalUsed-1; };
        int Strlen() { return TotalUsed-1; };
        int NumLines();
        int PrevWord(int Offset);
        int NextWord(int Offset);
        
        inline BOOL IsValidOffset(int Offset) { return ((Offset>=0) && (Offset<TotalUsed)); }
        inline char GetChar(int Offset) {
                return ((Offset>=Current->Offset) && (Offset<Current->Offset+Current->Used))? Current->Data[Offset-Current->Offset] : (*GetPtr(Offset));
                };
        
        void InsertChar(int offset,char a);
        void Delete(int offset);
                
        gString();
        virtual ~gString();
};

#endif /*GSTRING_H_*/