src/sdl/sdlwellimagefont.cxx

   1 // docm_prefix(///)
   2 /****************************************************************************
   3 *  Copyright (C) 2002-2003 by Leo Khramov
   4 *  email:   leo@xnc.dubna.su
   5 *
   6 *  This program is free software; you can redistribute it and/or modify
   7 *  it under the terms of the GNU General Public License as published by
   8 *  the Free Software Foundation; either version 2 of the License, or
   9 *  (at your option) any later version.
  10 *
  11 *  This program is distributed in the hope that it will be useful,
  12 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 *  GNU General Public License for more details.
  15  ****************************************************************************/
  16 // $Id: sdlwellimagefont.cxx,v 1.2 2003/02/20 15:09:41 leo Exp $
  17
  18 /// module description
  19 /// SDL version of imagefont - displays text with SDL calls, work with pixmaps
  20 /// loaded thought XWellEngine class
  21
  22 #include "sdlwellimagefont.h"
  23
  24 //===========================================================================
  25 /// global WellImageFont(Images id, unsigned int ifl, unsigned int ifh, int idx, int idy)
  26 ///   Constructor of base draw text class
  27 /// tags WellImageFont
  28 SDLWellImageFont::SDLWellImageFont(Images id, unsigned int ifl, unsigned int ifh,
  29                                int idx, int idy):
  30   WellImageFont(id,ifl,ifh,idx,idy)
  31 {
  32     engine=(SDLWellEngine*) default_well_engine;
  33     font_surf=engine->get_pixmap_of_image(id);
  34     mainw=engine->get_main_window();
  35 }
  36
  37 //===========================================================================
  38 /// global clear_region()
  39 ///   clear region on screen for making output
  40 /// tags SDLWellImageFont
  41 void SDLWellImageFont::clear_region()
  42 {
  43     SDL_Rect dest;
  44     dest.x = screen_x;
  45     dest.y = screen_y;
  46     dest.w = screen_l;
  47     dest.h = screen_h;
  48     SDL_FillRect(mainw, &dest, 0);
  49     SDL_UpdateRects(mainw, 1, &dest);
  50 }
  51
  52 //===========================================================================
  53 /// global clear_region()
  54 ///   clear region on screen for making output
  55 /// tags SDLWellImageFont
  56 void SDLWellImageFont::clear_region(Colors idx)
  57 {
  58     SDL_Rect dest;
  59     Uint32 *cols=engine->get_colors();
  60
  61     dest.x = screen_x;
  62     dest.y = screen_y;
  63     dest.w = screen_l;
  64     dest.h = screen_h;
  65
  66     SDL_FillRect(mainw, &dest, cols[idx]);
  67     SDL_UpdateRects(mainw, 1, &dest);
  68 }
  69
  70 //===========================================================================
  71 /// global draw_symbol(...)
  72 ///   draw one symbol from font image to screen
  73 /// tags SDLWellImageFont
  74 void SDLWellImageFont::draw_symbol(int ix, int iy,
  75                                 unsigned int il,
  76                                 unsigned int ih,
  77                                 char symb)
  78 {
  79     SDL_Rect src,dest;
  80
  81     if(symb<=32 || symb>=127)
  82         return;
  83     symb-=33;  //Translate to our indexation
  84
  85     dest.x = ix;
  86     dest.y = iy;
  87     dest.w = il;
  88     dest.h = ih;
  89     src.x = dx;
  90     src.y = dy+(int)symb*font_h;
  91     src.w = il;
  92     src.h = ih;
  93     SDL_BlitSurface(font_surf, &src, mainw, &dest);
  94     /* Update the changed portion of the screen */
  95     SDL_UpdateRects(mainw, 1, &dest);
  96 }
  97