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https://github.com/coderkei/akmenu-next.git
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107 lines
2.5 KiB
C++
107 lines
2.5 KiB
C++
/*
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font.cpp
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Copyright (C) 2007 Acekard, www.acekard.com
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Copyright (C) 2007-2009 somebody
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Copyright (C) 2009 yellow wood goblin
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <nds.h>
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#include <string.h>
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#include "font.h"
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#include "files.h"
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#include "dbgtool.h"
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#include "systemfilenames.h"
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cFont::cFont()
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{
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}
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cFont::~cFont()
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{
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}
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u32 cFont::getStringScreenWidth( const char * str, size_t len )
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{
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if( NULL == str || 0 == len )
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return 0;
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size_t strLen = strlen( str );
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if( len > strLen )
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len = strLen;
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const char * endstr = str + len;
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u32 width = 0;
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const char * p = str;
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while( *p != 0 && p < endstr ) {
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u32 ww,add;
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Info(p,&ww,&add);
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width+=ww;
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p+=add;
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}
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return width;
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}
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std::string cFont::breakLine( const std::string & text, u32 maxLineWidth )
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{
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if( 0 == maxLineWidth )
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return text;
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std::string ret;
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// 找空格
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// 找到之后，和上次空格相减，传入 计算width 函数
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// 如果tempwdith超过 maxwidth，把上次的空格换成 \n
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// tempwidth 清零，继续
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const char * p = text.c_str();
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bool hasSpace = false;
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u32 tempWidth = 0;
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while( *p != 0 )
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{
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u32 ww,add;
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Info(p,&ww,&add);
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if( ' ' == *p ) hasSpace=true;
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tempWidth+=ww;
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if( tempWidth > maxLineWidth )
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{
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if( hasSpace )
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{
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u32 lastSpacePos = ret.find_last_of( ' ' );
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ret[lastSpacePos] = '\n';
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tempWidth = getStringScreenWidth(
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text.c_str() + lastSpacePos, (size_t)(p - text.c_str()) - lastSpacePos );
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hasSpace = false;
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} else {
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ret.push_back( '\n' );
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tempWidth = 0;
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}
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}
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for(u32 ii=0;ii<add;ii++) ret.push_back( *p++ );
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}
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if(ret[ret.length()-1]!='\n') ret.push_back('\n');
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return ret;
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}
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u32 cFont::FontRAM(void)
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{
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return 0;
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}
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