Font.cpp

   1 /*
   2  * This file is part of NumptyPhysics
   3  * Copyright (C) 2008 Tim Edmonds
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License as
   7  * published by the Free Software Foundation; either version 3 of the
   8  * License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful, but
  11  * WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * General Public License for more details.
  14  *
  15  */
  16 #include "Font.h"
  17 #include "Canvas.h"
  18 #include "Config.h"
  19 #include <SDL/SDL_ttf.h>
  20
  21 #define FONT(fONTpTR) ((TTF_Font*)((fONTpTR)->m_state))
  22
  23 struct FontCanvas : public Canvas
  24 {
  25   FontCanvas( SDL_Surface* s )
  26     : Canvas( s )
  27   {}
  28 };
  29
  30
  31 Font::Font( const std::string& file, int ptsize )
  32 {
  33   TTF_Init();
  34   std::string fname = Config::findFile(file);
  35   m_state = TTF_OpenFont( fname.c_str(), ptsize );
  36 }
  37
  38
  39 Vec2 Font::metrics( const std::string& text ) const
  40 {
  41   Vec2 m;
  42   TTF_SizeText( FONT(this), text.c_str(), &m.x, &m.y );
  43   return m;
  44 }
  45
  46
  47 void Font::drawLeft( Canvas* canvas, Vec2 pt,
  48                      const std::string& text, int colour ) const
  49 {
  50   SDL_Surface *surf;
  51   SDL_Color bg = { 0xff,0xff,0xff };
  52   FontCanvas temp( TTF_RenderText_Blended( FONT(this),
  53                                            text.c_str(),
  54                                            SDL_Color() ) );
  55   canvas->drawImage( &temp, pt.x, pt.y );
  56 }
  57
  58 void Font::drawCenter( Canvas* canvas, Vec2 pt,
  59                        const std::string& text, int colour ) const
  60 {
  61   drawLeft( canvas, pt - metrics(text)/2, text, colour );
  62 }
  63
  64 void Font::drawWrap( Canvas* canvas, Rect area,
  65                      const std::string& text, int colour ) const
  66 {
  67   Vec2 pos = area.tl;
  68   size_t i = 0, e=0;
  69   while ( i < text.length() ) {
  70     e = text.find_first_of(" \n\r\t",i);
  71     if ( i == e ) {
  72       i++;
  73     } else {
  74       std::string word = text.substr(i,i+e);
  75       Vec2 wm = metrics( word );
  76       if ( pos.x + wm.x > area.br.x ) {
  77         pos.x = area.tl.x;
  78         pos.y += wm.y;
  79       }
  80       drawLeft( canvas, pos, word, colour );
  81       i = e + 1;
  82     }
  83   }
  84   drawLeft( canvas, pos, text.substr(i), colour );
  85 }
  86
  87
  88 const Font* Font::titleFont()
  89 {
  90   static Font* f = new Font("femkeklaver.ttf",36);
  91   return f;
  92 }
  93
  94 const Font* Font::headingFont()
  95 {
  96   static Font* f = new Font("femkeklaver.ttf",24);
  97   return f;
  98 }
  99
 100 const Font* Font::blurbFont()
 101 {
 102   static Font* f = new Font("femkeklaver.ttf",16);
 103   return f;
 104 }
 105