modules/gui/skins2/src/bitmap_font.hpp

   1 /*****************************************************************************
   2  * bitmap_font.hpp
   3  *****************************************************************************
   4  * Copyright (C) 2004 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Cyril Deguet     <asmax@via.ecp.fr>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along
  20  * with this program; if not, write to the Free Software Foundation, Inc.,
  21  * 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  22  *****************************************************************************/
  23
  24 #ifndef BITMAP_FONT_HPP
  25 #define BITMAP_FONT_HPP
  26
  27 #include "generic_font.hpp"
  28 #include <string>
  29
  30 class GenericBitmap;
  31
  32
  33 /// Class to handle bitmap fonts
  34 class BitmapFont: public GenericFont
  35 {
  36 public:
  37     BitmapFont( intf_thread_t *pIntf, const GenericBitmap &rBitmap,
  38                 const string &rType );
  39     virtual ~BitmapFont() { }
  40
  41     virtual bool init() { return true; }
  42
  43     /// Render a string on a bitmap.
  44     /// If maxWidth != -1, the text is truncated with '...'
  45     virtual GenericBitmap *drawString( const UString &rString,
  46         uint32_t color, int maxWidth = -1 ) const;
  47
  48     /// Get the font size
  49     virtual int getSize() const { return m_height; }
  50
  51 private:
  52     /// Description of a glyph
  53     struct Glyph_t
  54     {
  55         Glyph_t(): m_xPos( -1 ), m_yPos( 0 ) { }
  56         int m_xPos, m_yPos;
  57     };
  58
  59     /// Bitmap
  60     const GenericBitmap &m_rBitmap;
  61     /// Glyph size
  62     int m_width, m_height;
  63     /// Horizontal advance between two characters
  64     int m_advance;
  65     /// Horizontal advance for non-displayable characters
  66     int m_skip;
  67     /// Character table
  68     Glyph_t m_table[256];
  69 };
  70
  71 #endif