diff options
Diffstat (limited to 'extensions/smttfont.cpp')
| -rw-r--r-- | extensions/smttfont.cpp | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/extensions/smttfont.cpp b/extensions/smttfont.cpp new file mode 100644 index 0000000..f3e8b1c --- /dev/null +++ b/extensions/smttfont.cpp @@ -0,0 +1,144 @@ +// -*- C++ -*- +/* + * Simple MultimEdia LiTerator(SMELT) + * by Chris Xiong 2015 + * Truetype font support implementation + * + * WARNING: This library is in development and interfaces would be very + * unstable. + * This library is developed for the BLR series games. + */ +#include "smttfont.hpp" + +SMELT *smTTChar::sm=NULL; + +void smTTChar::free(){if(quad.tex){sm->smTextureFree(quad.tex);quad.tex=0;sm->smRelease();}} +bool smTTChar::setChar(wchar_t c,FT_Face ttface) +{ + if(!sm)sm=smGetInterface(SMELT_APILEVEL); + FT_GlyphSlot slot=ttface->glyph; + FT_UInt glyph_index=FT_Get_Char_Index(ttface,c); + if(FT_Load_Glyph(ttface,glyph_index,FT_LOAD_DEFAULT))return false; + if(FT_Render_Glyph(ttface->glyph,FT_RENDER_MODE_NORMAL))return false; + _w=slot->advance.x>>6;_h=3*slot->bitmap.rows-2*slot->bitmap_top; + rw=slot->bitmap.width;rh=slot->bitmap.rows; + xofs=slot->bitmap_left;yofs=slot->bitmap.rows-slot->bitmap_top; + quad.tex=sm->smTextureCreate(rw?rw:1,rh?rh:1); + DWORD* px=sm->smTextureLock(quad.tex,0,0,rw?rw:1,rh?rh:1,false); + memset(px,0,sizeof(DWORD)*(rw?rw:1)*(rh?rh:1)); + int ptr=0; + for(int i=0;i<rh;++i) + for(int j=0;j<rw;++j) + { +#ifdef _D3D + px[i*rw+j]=ARGB(slot->bitmap.buffer[ptr],255,255,255); +#else + px[(rh-i-1)*rw+j]=ARGB(slot->bitmap.buffer[ptr],255,255,255); +#endif + ++ptr; + } + sm->smTexutreUnlock(quad.tex); + quad.blend=BLEND_ALPHABLEND; + quad.v[0].tx=0;quad.v[0].ty=0;quad.v[1].tx=1;quad.v[1].ty=0; + quad.v[2].tx=1;quad.v[2].ty=1;quad.v[3].tx=0;quad.v[3].ty=1; + return true; +} +void smTTChar::render(float x,float y,DWORD col) +{ + for(int i=0;i<4;++i)quad.v[i].col=col,quad.v[i].z=.5; + quad.v[0].x=x+xofs;quad.v[0].y=y-rh+yofs; + quad.v[1].x=x+rw+xofs;quad.v[1].y=y-rh+yofs; + quad.v[2].x=x+rw+xofs;quad.v[2].y=y+yofs; + quad.v[3].x=x+xofs;quad.v[3].y=y+yofs; + sm->smRenderQuad(&quad); +} + +bool smTTFont::loadTTF(const char* path,int pt) +{ + if(FT_Init_FreeType(&ftlib))return false; + if(FT_New_Face(ftlib,path,0,&ttface))return false; + if(FT_Set_Char_Size(ttface,0,pt*64,96,96))return false; + chars.clear(); + return true; +} +bool smTTFont::loadTTFFromMemory(char* ptr,DWORD size,int pt) +{ + if(FT_Init_FreeType(&ftlib))return false; + if(FT_New_Memory_Face(ftlib,(const FT_Byte*)ptr,(FT_Long)size,0,&ttface))return false; + if(FT_Set_Char_Size(ttface,0,pt*64,96,96))return false; + chars.clear(); + return true; +} +void smTTFont::releaseTTF() +{ + FT_Done_Face(ttface); + FT_Done_FreeType(ftlib); +} +void smTTFont::updateString(const wchar_t *format,...) +{ + memset(buf,0,sizeof(buf)); + va_list vl; + va_start(vl,format); + vswprintf(buf,1024,format,vl); + va_end(vl); + buf[1024]='\0'; + w=h=0;float lh=0; + for(int i=0;buf[i]!='\0';++i) + { + if(chars.find(buf[i])==chars.end()&&buf[i]!=L'\n') + if(!chars[buf[i]].setChar(buf[i],ttface)) + chars.erase(chars.find(buf[i])); + if(chars.find(buf[i])!=chars.end()) + { + w+=chars[buf[i]].w(); + if(chars[buf[i]].h()>lh)lh=chars[buf[i]].h(); + } + if(buf[i]==L'\n')h+=lh,lh=0; + } + h+=lh; +} +void smTTFont::render(float x,float y,DWORD col,int align) +{ + float curx,cury,lh; + if(align==ALIGN_LEFT) + { + curx=x;cury=y;lh=0; + for(int i=0;buf[i]!=L'\0';++i) + { + if(buf[i]!=L'\n') + { + if(chars.find(buf[i])!=chars.end()) + { + chars[buf[i]].render(curx,cury,col); + curx+=chars[buf[i]].w(); + lh=chars[buf[i]].h()>lh?chars[buf[i]].h():lh; + } + } + else cury+=lh,lh=0,curx=x; + } + } + if(align==ALIGN_RIGHT) + { + curx=x;cury=y;lh=0; + for(int i=wcslen(buf)-1;i>=0;--i) + { + if(buf[i]!=L'\n') + { + if(chars.find(buf[i])!=chars.end()) + { + chars[buf[i]].render(curx,cury,col); + curx-=chars[buf[i]].w(); + lh=chars[buf[i]].h()>lh?chars[buf[i]].h():lh; + } + } + else cury-=lh,lh=0,curx=x; + } + } +} +DWORD smTTFont::getCacheSize(){return chars.size();} +void smTTFont::clearCache() +{ + for(std::map<wchar_t,smTTChar>::iterator i=chars.begin();i!=chars.end();++i) + i->second.free(); + chars.clear(); +} |