textbuf_type.h

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00001 /* $Id: textbuf_type.h 25102 2013-03-17 20:58:40Z rubidium $ */
00002 
00003 /*
00004  * This file is part of OpenTTD.
00005  * OpenTTD is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, version 2.
00006  * OpenTTD is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
00007  * See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with OpenTTD. If not, see <http://www.gnu.org/licenses/>.
00008  */
00009 
00012 #ifndef TEXTBUF_TYPE_H
00013 #define TEXTBUF_TYPE_H
00014 
00015 #include "string_type.h"
00016 #include "strings_type.h"
00017 
00019 struct Textbuf {
00020   CharSetFilter afilter;    
00021   char * const buf;         
00022   uint16 max_bytes;         
00023   uint16 max_chars;         
00024   uint16 bytes;             
00025   uint16 chars;             
00026   uint16 pixels;            
00027   bool caret;               
00028   uint16 caretpos;          
00029   uint16 caretxoffs;        
00030 
00031   explicit Textbuf(uint16 max_bytes, uint16 max_chars = UINT16_MAX);
00032   ~Textbuf();
00033 
00034   void Assign(StringID string);
00035   void Assign(const char *text);
00036   void CDECL Print(const char *format, ...) WARN_FORMAT(2, 3);
00037 
00038   void DeleteAll();
00039   bool DeleteChar(int delmode);
00040   bool InsertChar(uint32 key);
00041   bool InsertClipboard();
00042   bool MovePos(int navmode);
00043 
00044   bool HandleCaret();
00045   void UpdateSize();
00046 
00047 private:
00048   bool CanDelChar(bool backspace);
00049   WChar GetNextDelChar(bool backspace);
00050   void DelChar(bool backspace);
00051   bool CanMoveCaretLeft();
00052   WChar MoveCaretLeft();
00053   bool CanMoveCaretRight();
00054   WChar MoveCaretRight();
00055 
00056 };
00057 
00058 #endif /* TEXTBUF_TYPE_H */