src/x11/xwellinput.cxx

   1 // docm_prefix(///)
   2 /****************************************************************************
   3 *  Copyright (C) 2002 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: xwellinput.cxx,v 1.1.1.1 2003/01/04 11:37:22 leo Exp $
  17
  18 /// module description
  19 /// X11 implementation of WellInput class - make input text from user
  20 /// display it through WellImageFont, convert X11 Key event to symbols
  21
  22 #include "xwellinput.h"
  23 #include "xwellengine.h"
  24
  25 //===========================================================================
  26 /// global XWellInput(char*)
  27 ///     constructor - fill name and get geometry
  28 /// tags XWellInput
  29 XWellInput::XWellInput(char* iname) : WellInput(iname)
  30 {
  31   xengine=(XWellEngine*) default_well_engine;
  32   mainw=xengine->get_main_window();
  33   maingc=xengine->get_main_gc();
  34 }
  35
  36 //===========================================================================
  37 /// global process_event(wEvent)
  38 ///     stub that process events
  39 /// tags XWellInput
  40 bool XWellInput::process_event(wEvent ev)
  41 {
  42   XEvent *xev=(XEvent*)ev.data;
  43   switch(ev.type)
  44   {
  45   case eKeyPress:
  46     process_key(xev);
  47     return false;
  48
  49   }
  50   return true;
  51 }
  52
  53 //===========================================================================
  54 /// global draw_text()
  55 ///     draw text on the screen
  56 /// tags XWellInput
  57 void XWellInput::draw_text()
  58 {
  59   unsigned long *colors=xengine->get_colors();
  60   fnt->draw_text(buf,buflen,BackColor);
  61   XSetForeground(disp,maingc,colors[BonusColor2]);
  62   XFillRectangle(disp,mainw,maingc,geo[1].tox+buflen*FONT2_L,geo[1].toy,
  63                  FONT2_L,FONT2_H);
  64 }
  65
  66 //===========================================================================
  67 /// global process_key(XEvent)
  68 ///     draw text on the screen
  69 /// tags XWellInput
  70 void XWellInput::process_key(XEvent *xev)
  71 {
  72   KeySym ks;
  73   XComposeStatus cs;
  74
  75   char   sym[4]="";
  76   XLookupString(&xev->xkey, sym, 4, &ks, &cs);
  77   switch(ks)
  78   {
  79   case XK_Return:
  80     if(buflen)
  81       object_on_enter.call(wEvent(aInputDone,this));
  82     break;
  83
  84   case XK_Delete:
  85   case XK_BackSpace:
  86     if(buflen>0)
  87     {
  88       buflen--;
  89       buf[buflen]=0;
  90       draw_text();
  91     }
  92     break;
  93   default:
  94     if(buflen<maxlen && sym[0]>=32 && sym[0]<127)
  95     {
  96       buf[buflen++]=sym[0];
  97       buf[buflen]=0;
  98       draw_text();
  99     }
 100   }
 101 }