source/entry.cpp

   1 /* $Id$
   2
   3 This file is part of libmspgltk
   4 Copyright © 2007  Mikko Rasa, Mikkosoft Productions
   5 Distributed under the LGPL
   6 */
   7
   8 #include <msp/gl/matrix.h>
   9 #include <msp/gl/texture.h>
  10 #include <msp/gl/transform.h>
  11 #include <msp/input/keys.h>
  12 #include "entry.h"
  13 #include "graphic.h"
  14 #include "part.h"
  15 #include "style.h"
  16
  17 using namespace std;
  18
  19 #include <iostream>
  20
  21 namespace Msp {
  22 namespace GLtk {
  23
  24 Entry::Entry(const Resources &r, const string &t):
  25         Widget(r),
  26         text(t),
  27         edit_pos(text.size())
  28 {
  29         update_style();
  30 }
  31
  32 void Entry::set_text(const string &t)
  33 {
  34         text=t;
  35         edit_pos=text.size();
  36 }
  37
  38 void Entry::key_press(unsigned key, unsigned, wchar_t ch)
  39 {
  40         if(key==Input::KEY_LEFT)
  41         {
  42                 if(edit_pos>0)
  43                         --edit_pos;
  44         }
  45         else if(key==Input::KEY_RIGHT)
  46         {
  47                 if(edit_pos<text.size())
  48                         ++edit_pos;
  49         }
  50         else if(key==Input::KEY_BACKSPACE)
  51         {
  52                 if(edit_pos>0)
  53                         text.erase(--edit_pos, 1);
  54         }
  55         else if(key==Input::KEY_ENTER)
  56                 signal_enter.emit();
  57         else if(ch>=' ')
  58         {
  59                 text.insert(edit_pos, Codecs::encode<Codecs::Utf8>(Codecs::ustring(1, ch)));
  60                 ++edit_pos;
  61         }
  62 }
  63
  64 void Entry::render_special(const Part &part) const
  65 {
  66         if(part.get_name()=="text")
  67                 render_text(part, text);
  68         else if(part.get_name()=="cursor")
  69         {
  70                 if(!part.get_graphic(state))
  71                         return;
  72
  73                 const GL::Font *const font=style->get_font();
  74                 const float font_size=font->get_default_size();
  75
  76                 Geometry rgeom=part.get_geometry();
  77                 rgeom.x=static_cast<unsigned>(font->get_string_width(text.substr(0, edit_pos))*font_size);
  78                 rgeom.w=static_cast<unsigned>(font->get_string_width(text)*font_size);
  79                 part.get_alignment().apply(rgeom, geom, part.get_margin());
  80
  81                 GL::push_matrix();
  82                 GL::translate(rgeom.x, rgeom.y, 0);
  83                 part.get_graphic(state)->render(part.get_geometry().w, rgeom.h);
  84                 GL::pop_matrix();
  85         }
  86 }
  87
  88
  89 Entry::Loader::Loader(Entry &ent):
  90         Widget::Loader(ent)
  91 { }
  92
  93 } // namespace GLtk
  94 } // namespace Msp