textbuf_type.h

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00001 /* $Id: textbuf_type.h 24738 2012-11-14 22:50:17Z frosch $ */
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   char * const buf;         
00021   uint16 max_bytes;         
00022   uint16 max_chars;         
00023   uint16 bytes;             
00024   uint16 chars;             
00025   uint16 pixels;            
00026   bool caret;               
00027   uint16 caretpos;          
00028   uint16 caretxoffs;        
00029 
00030   explicit Textbuf(uint16 max_bytes, uint16 max_chars = UINT16_MAX);
00031   ~Textbuf();
00032 
00033   void Assign(StringID string);
00034   void Assign(const char *text);
00035   void CDECL Print(const char *format, ...) WARN_FORMAT(2, 3);
00036 
00037   void DeleteAll();
00038   bool DeleteChar(int delmode);
00039   bool InsertChar(uint32 key);
00040   bool InsertClipboard();
00041   bool MovePos(int navmode);
00042 
00043   bool HandleCaret();
00044   void UpdateSize();
00045 
00046 private:
00047   bool CanDelChar(bool backspace);
00048   WChar GetNextDelChar(bool backspace);
00049   void DelChar(bool backspace);
00050   bool CanMoveCaretLeft();
00051   WChar MoveCaretLeft();
00052   bool CanMoveCaretRight();
00053   WChar MoveCaretRight();
00054 
00055 };
00056 
00057 #endif /* TEXTBUF_TYPE_H */