src/sdl/sdlwellinput.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: sdlwellinput.cxx,v 1.2 2003/02/20 15:09:41 leo Exp $
  17
  18 /// module description
  19 /// SDL implementation of WellInput class - make input text from user
  20 /// display it through WellImageFont, convert SDL Key event to symbols
  21
  22 #include "sdlwellinput.h"
  23 #include "sdl_gfxprimitives.h"
  24 //===========================================================================
  25 /// global SDLWellInput(char*)
  26 ///     constructor - fill name and get geometry
  27 /// tags SDLWellInput
  28 SDLWellInput::SDLWellInput(char* iname) : WellInput(iname)
  29 {
  30   engine=(SDLWellEngine*) default_well_engine;
  31   mainw=engine->get_main_window();
  32 }
  33
  34 //===========================================================================
  35 /// global process_event(wEvent)
  36 ///     stub that process events
  37 /// tags SDLWellInput
  38 bool SDLWellInput::process_event(wEvent ev)
  39 {
  40     SDL_Event *xev=(SDL_Event*)ev.data;
  41     switch(ev.type)
  42     {
  43     case eKeyPress:
  44         process_key(xev);
  45         return false;
  46
  47     }
  48     return true;
  49 }
  50
  51 //===========================================================================
  52 /// global draw_text()
  53 ///     draw text on the screen
  54 /// tags SDLWellInput
  55 void SDLWellInput::draw_text()
  56 {
  57     fnt->draw_text(buf,buflen,BackColor);
  58     show_cursor();
  59 }
  60
  61
  62 //===========================================================================
  63 /// global show_cursor()
  64 ///     draw cursor on the screen
  65 /// tags SDLWellInput
  66 void SDLWellInput::show_cursor()
  67 {
  68     SDL_Rect dest;
  69     Uint32 *colors=engine->get_colors();
  70
  71     dest.x = geo[1].tox+buflen*FONT2_L;
  72     dest.y = geo[1].toy;
  73     dest.w = FONT2_L;
  74     dest.h = FONT2_H;
  75
  76
  77     SDL_FillRect(mainw, &dest, colors[BonusColor2]);
  78     SDL_UpdateRects(mainw, 1, &dest);
  79 }
  80
  81
  82 //===========================================================================
  83 /// global hide_cursor()
  84 ///     hide cursor on the screen
  85 /// tags SDLWellInput
  86 void SDLWellInput::hide_cursor()
  87 {
  88     SDL_Rect dest;
  89     Uint32 *colors=engine->get_colors();
  90
  91     dest.x = geo[1].tox+buflen*FONT2_L;
  92     dest.y = geo[1].toy;
  93     dest.w = FONT2_L;
  94     dest.h = FONT2_H;
  95
  96     SDL_FillRect(mainw, &dest, colors[BackColor]);
  97     SDL_UpdateRects(mainw, 1, &dest);
  98 }
  99
 100
 101 //===========================================================================
 102 /// global process_key(SDLEvent)
 103 ///     draw text on the screen
 104 /// tags SDLWellInput
 105
 106 void SDLWellInput::process_key(SDL_Event *xev)
 107 {
 108     switch(xev->key.keysym.sym)
 109     {
 110     case SDLK_RETURN:
 111         if(buflen)
 112             object_on_enter.call(wEvent(aInputDone,this));
 113         break;
 114
 115     case SDLK_DELETE:
 116     case SDLK_BACKSPACE:
 117         if(buflen>0)
 118         {
 119             hide_cursor();
 120             buflen--;
 121             buf[buflen]=0;
 122             draw_text();
 123         }
 124         break;
 125     default:
 126         if(buflen<maxlen &&
 127            xev->key.keysym.unicode>=32 &&
 128            xev->key.keysym.unicode<128)
 129         {
 130             hide_cursor();
 131             buf[buflen++]=(char)xev->key.keysym.unicode;
 132             buf[buflen]=0;
 133             draw_text();
 134         }
 135     }
 136 }
 137